Home

Ekahau Site Survey - Onlinecampus Virtuelle PH

1. D rori D Floor2 1 1 GB 0 12 0705 67 51 iw cisco B ofi2wa testissid2 wa GRD 00 19 07 05 89 51 9 wu Dink B Ze o0 1b 11 69 f9 84 1 T in Dink B E oo tb 11 e5 2 93 1 my Dink B GRD o0 b 1e5b3 c1 1 Search for specific AP s such as all APs manufactured by D Link Quickly select a group of APs There are 12 APs on this floor out of which 3 are shown Perform actions to APs Select All None Freeze Join Automatically Place APs on map Edit This AP is selected Notice the orange color This AP is selected Click here to select or de select Oo O1 5 amp D 4 5 1 Selecting Access Points There are several methods to select which access points to visualize edit or select as My APs APs can be selected one by one either from the map or from the AP list e To select APs on the map simply click on the AP to be selected Click on the AP again to de select it The selected AP will be highlighted on the map and in the AP list e To select APs on the AP List click on the handle on the left hand side of the AP list to select an AP an orange color will indicate that the AP has been selected Click on the handle again to de select You will also see the AP being highlighted on the map Simulated APs can be selected in the same way as measured APs However simulated multi radio APs can be selected one radio at a time e To select radios on the map click on
2. Visualization Passive Survey Tradi Hybrid Survey End to Simulation tional Signal Reading end Connectivity Test ing Signal Strength X X x Signal to Noise Ratio X X X Strongest Access Point X X X Ping Round Trip Time X Ping Packet Loss X Associated Access Point X 802 11n Channel Bonding X X X Chapter 8 Analyzing the Wi Fi Coverage and Performance 74 75 Chapter 9 Troubleshooting Detecting and Solving the Most Common Wi Fi Problems 9 Troubleshooting Detecting and Solving the Most Common Wi Fi Problems 9 1 On Spot Troubleshooting Using Live Network Status Ekahau Site Survey provides excellent tools for visualizing and troubleshooting your network on the map we will cover these later in this chapter However Ekahau Site Survey also provides a powerful troubleshooting tool called Live Network Status It works without a map without having any surveys performed In a typical troubleshooting scenario the wireless network does not function in one or more locations for some reason at a particular time With ESS you need to take the laptop to the problematic area and use the Live Network Status view to troubleshoot the issue You can use the pre defined Requirements to see whether the network meets different application requirements or not To start the Live Network Status click Device gt Live Network Status or click on the Miniature Signal View 9 1 1 Signals The Signals t
3. cceecceeeeeeeeeeeeeeeeentneeeeeeeeeees 48 7 3 Placing Access Points on the Map 49 7 4 Selecting My Access Points cccc ccccseceeseccetsecenshesessceeticceetansenesdanteedetneeesbesseteede 49 7 5 Simultatenous Survey Work Merging Two Projects as One aeee 50 7 6 Inspecting Surveys in More Detail 2 iii 50 8 Analyzing the Wi Fi Coverage and Performance ss 53 8 1 Visualization Options sise 54 8 1 1 Vis alization M de EE 55 0 Ee E et Le D 57 8 1 3 Visualization Specific Options ss 58 8 2 Adjusting the L gende tent dress ententes 58 8 3 Vis alization WIG WS maapeite EE Eege eg 60 Bde DA Rates Ate e ns tte Re er Et G6 See 60 8 Interference EE 61 8 3 3 Network Health eens teens ss en RE dent ne tte an 62 8 3 4 NetWork ISSU mn en gege ten tte 63 E E Hin OT APS Sn ne A a foun em denis eine 64 8 3 6 Signal Strength EE 65 8 3 7 Signal to Noise Ratio EE 66 S 3 B SWOMGeESEACCESS EE 68 8 3 9 Ping Round Trip TIME EE 68 8 3 10 Ping EE 69 8 3 11 Associated Access Point 28h E EEGENEN dee 70 8 3 12 802 11n Channel Bonding Entente iranienne Rte 71 8 4 Different Survey Methods vs Visualizations 0 eecceceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeenaeees 72 9 Troubleshooting Detecting and Solving the Most Common Wi Fi Problems 75 9 1 On Spot Troubleshooting Using Live Network Status 75 GE a We EE 75 9 12 REQUIFEMEMS TEE 75 E but Me EI 76 CN Ge e ER RP Hinyatete
4. 8 1 3 Visualization Specific Options Some visualizations have specific options that only apply for them These visualization specific options include Minimum Signal Strenght The visualization is only shown in areas where the signal strength exceeds this threshold Adapter The visualization is shown according to how the selected adapter would have per ceived the measured data Network Load Is used with simulation visualizations to demonstrate how different network loads affects on the network performance Use Noise From Defines wheter the visualization uses measured Noise or Simulated Co Channel Interference With Automatic option the measured Noise is always used when available Show lt xx gt Strongest Signal at lt xx gt Channel Visualizes the selected strongest signal at the selected channel s 8 2 Adjusting the Legend You can adjust the visualization appearance and value range by adjusting the Legend The Legend can be adjusted by clicking on the Legend at the bottom right corner of the screen The Legend adjustments are automatically saved with the project The following adjustments are provided Contours The contour line between each color in the visualization can be enabled or disabled Value Range Adjusts the range of values to be displayed The Open setting at each end of the value range allows you to see the values outside the value range also Spacing Each color in the visualization may represent one or ma
5. Viewed Signal allows you to disregard the signals from the strongest access points visualizing the second or third strongest signals instead of the strongest one This is useful for visualizing AP failover scenarios and redundancy Signals at Channel limits the Signal Strength visualization to only show the signals at a selected channel Chapter 8 Analyzing the Wi Fi Coverage 66 and Performance e The Adapter selection allows you to visualize the signal strength as the selected adapter would see it For example the signal strength may be sufficient using a high quality network adapter but may not be sufficient using a wireless VoIP phone with different antenna charac teristics Ekahau Site Survey has characterized and field tested various wireless adapters and VoIP phones to allow accurate simulation when deploying wireless networks for different adapters Figure 8 15 Signal Strength visualization High signal strength Low signal strength Signal strength below 80dBm Click to adjust signal strength visualization value range colors etc Fabi 8 3 7 Signal to Noise Ratio In wireless data communication the signal strength must exceed the noise level Otherwise two devices will not be able to communicate with one another The Signal to Noise Ratio SNR visu alization shows if the signal level exceeds the noise level and by how many dB Signal to Noise Ratio is affected by 67 Chapter 8 Analyzing the Wi Fi
6. 6 1 1 1 Customizing the Wall Materials ee eeeeeeeeeeeeeeeeeeeeeeeeeeeees 34 6 1 1 2 Duplicating Maps with Similar Layouts 0 0 0 0 eee eeeeees 35 6 1 2 Indicating Network Coverage Areas 2 ccccccceeceeeeceseneceeeeeeeeeeseuueeceeeenees 35 6 1 3 Configuring Auto Planner ss 37 6 2 Creating the Network Plan Manually Using Simulated Access Points 0000000010 38 6 2 1 Optimizing Access Point Layout and Configuration 39 6 3 Designing Wi Fi Networks for Multi Floor Buildings 40 6 3 1 Defining the Building Layout 1 40 6 3 2 Setting Floor Alignment Points AAA 41 6 3 3 Visualizing Floor to Floor Signal Coverage s es 42 7 Site Surveys Ensuring Sufficient Coverage and Performance On Site 43 7 1 Performing Site Surveys 42 coh tec SR A fr AR A ER At end den een 43 7 1 1 Configuring the Wi Fi Device for Passive Surveys 45 7 1 2 Configuring the Wi Fi Devices for Hybrid Surveys 46 7 1 3 Moving and Deleting Survey Points 4 44 us 46 7 1 4 GPS Assisted Outdoor Site Surveys 0 22 eee eeeeeeeeeeeeeeeennneeeeeeeeeeeeeeneeeeeeeeees 47 7 1 4 1 Supported GPS Receivers 47 7 1 4 2 Performing GPS Assisted Surveys 47 7 2 Post Deployment and Pre Deployment Surveys
7. A status indicator at the top of the screen will assist you in defining the building layout Once the status indicator states OK you will be able to see the simulated AP signals penetrating the floors Use the Actions button to add buildings This allows making network plans for multiple buildings within a single project 6 3 2 Setting Floor Alignment Points Map images between floors may differ in terms of rotation and offset for example To align the floors for 3D prediction you will need to use Floor Alignment Points You will need to find three locations in the building that are identifiable at each floor Stairwells elevator shafts building corners and building pillars are good examples Typically they are in the same locations on each floor These will serve as your Floor Alignment Points To mark them Select the map you want to place the Floor Alignment Points to Select the Floor Alignment Point Tool in the Planning Tab Optionally name the floor alignment point such as Staircase West Place the floor alignment point on the map by left clicking Repeat steps 2 4 so that each map has at least 3 Floor Alignment Points a so Chapter 6 Designing a Wi Fi Network 42 Figure 6 8 Two floors of a building with alignment points correctly placed in the same locations in both floors Note The floors that are connected to each other need to share three reference points If you use reference points in different locations for
8. Note Ekahau recommends Windows 7 OS 64 bit with 4GB RAM for project larger than 300 000 square feet Note Currently GPS assisted site surveys are not supported in 64 bit operating systems The following is required for simultaneous active and passive surveys Hybrid Surveys e Supported external Wi Fi adapter for traditional passive surveys e Integrated Wi Fi adapter for end to end connectivity testing e Network connection via the Integrated Wi Fi adapter using Windows Wi Fi management tool Disable the third party Wi Fi connectivity tool if enabled Please consider the following limitations that apply to the program e The software may become unstable if a single Project file contains more than 10 000 access point MAC addresses e The software may become unstable if images larger than 5000 x 5000 pixels are used e The software may become unstable if more than 100 hours of survey data is recorded into a single Project Note USB Wi Fi adapters are not fully supported in Windows XP OS To take full advantage of Ekahau Site Survey in laptop with Windows XP OS Ekahau recommends using Ekahau NIC 300 Cardbus Wi Fi adapter Chapter 2 Installation 6 2 1 1 Supported Wi Fi Adapters Ekahau Site Survey supports most common 802 11 Wi Fi network adapters for conducting surveys regardless the card type A wireless network adapter is not required if you do not wish to record signal data such if you just want to use the auto
9. 00 19 07 8c 5b 5d Unknown 5 5elUnknown 5 11 Unknown 5 12 Unknown 5 13 Unknown S 5 158 1c Unknown 5 00 19 07 c5 58 1d Unknown 5 ie 00 1a 1e c4 c5 50 BREME EIEEE baaje 0 nn 8 0 ee Round Trip Time milliseconds 13 38 35 Scanning duration 3 Results 130 Previous Signal behaviour over time for the selected access points These signals were heard at the highlighted point on the graph Ping Round Trip Time graph displaying the latency at the selected time interval The time window shown in the graph Move to next signal measurement akwoN gt Chapter 7 Site Surveys Ensuring Suffi cient Coverage and Performance On Site 52 53 Chapter 8 Analyzing the Wi Fi Coverage and Performance 8 Analyzing the Wi Fi Coverage and Performance There are various visualizations that allow you to estimate network coverage and performance The visualizations are displayed as heat maps on the map image The displayed visualization is selected using the two drop down menus above the map window The default visualization is Signal Strength for My Access Points The first drop down menu selects the visualization type for example signal strength or data rate The second drop down selects what access points will be included in the visualization If you want to visualize signal strength for
10. To learn more about My Access Points see chapter Selecting My Access Points Chapter 7 Site Surveys Ensuring Suffi 50 cient Coverage and Performance On Site 7 5 Simultatenous Survey Work Merging Two Projects as One If several persons are surveying the areas at one time the results need to be merged as one in the end The Merge feature imports surveys access points walls everything in the Project To merge two or more files as one Open the first Project Select File gt Merge Browse for the second Project which needs to be merged with the first one If more than two surveyors have been on the field repeat the previous step for all the Projects Warning In many cases some access point locations are lost in Merge Always check the AP locations of the Merged file and make the necessary corrections Note The Merge feature does not Merge surveys within the same map The surveyors need to operate on different floors maps for the Merge to work properly 7 6 Inspecting Surveys in More Detail In some cases if network is not behaving normally the signal behavior may need closer inspection During the survey the network adapter keeps constantly scanning the network for signal readings from the access points To see the individual signal measurements on the map select the Survey Inspector tool To view the individual measurements and analyze the survey data in more detail double click on the position of the survey rout
11. e ekahau Ekahau Site Survey Wi Fi Planning Verification Troubleshooting User Guide v5 0 Ekahau the Ekahau logo Ekahau Site Survey Ekahau Location Survey Ekahau Heatmapper Ekahau Engine Ekahau RTLS Controller Ekahau Positioning Engine Ekahau Manager Ekahau Activator Ekahau Finder Ekahau Vision Ekahau Tracker Ekahau Logger Ekahau T201 Ekahau T301 Ekahau NIC 54 Ekahau NIC 300 Ekahau Client and Ekahau Positioning Client are trademarks or registered trademarks of Ekahau Other product and company names may be trademarks or trade names oftheir respective owners The enclosed software contains implementations of Ekahau s patent pending inventions This manual and the Ekahau software described in it are copyrighted with all rights reserved This manual and the Ekahau software described in it may not be copied except as otherwise provided in your software license The contents of this document are provided as is Except as may be required by applicable law no warranties of any kind either express or implied including but not limited to the implied war ranties of merchantability and fitness for a particular purpose are made in relation to the accuracy reliability or contents of this document Ekahau reserves the right to revise this document or withdraw it at any time without prior notice Export of this technology may be controlled by the United States Government Diversion contrary to U S law proh
12. interference and or other problems with legacy 802 11 networks and devices The 802 11n Details view is very helpful to identify problems related to 802 11n The view displays the current signal measurements from 802 11n access points including their 802 11n characteristics With the 802 11n Details view it is possible to identify for example how many spatial streams different 802 11n access points are using and which channels are bonded thus consuming available channels from other access points and or possibly even causing inter ference The 802 11n Details view also displays whether SGI and Greenfield mode are used in the network For example you can check whether Greenfield mode is enabled in some of the 802 11n access points when a 802 11g client can not access your 802 11n network In this case the Greenfield mode should be disabled Figure 9 3 Llve 802 11n network details Live Network Status Signals Requirements 802 11n Details Ping MAC SSID Channel Signal Greenfield Max supp Max Spati 00 1F 9e 8d 20 8d Unknown SSID 132 136 300 0 Mbps 00 1F 9e 8d 20 8d Unknown SSID 132 136 300 0 Mbps 00 1f 9e 8d 20 82 Unknown SSID 6 144 4 Mbps 00 1F 9e 8d 20 82 Unknown SSID 6 144 4 Mbps O00 1F 9e 8d 1c 6d Unknown SSID 300 0 Mbps 00 1f 9e 6d 1c 6d Unknown SSID 300 0 Mbps 00 1F 9e 8d 1 62 Unknown SSID L 144 4 Mbps 00 1F 9e 8d 1c 62 Unknown SSID 1 144 4 Mbps 00 1F 9e 8d 18 6d Unknown SSID 100 104 300 0 Mbps 00 1F 9e 8
13. Rough Sketch Sketch Accurate Very Accurate 57 Chapter 8 Analyzing the Wi Fi Coverage and Performance Figure 8 6 Very Accurate Mode on the left and Rough Sketch Mode on the right 8 1 2 Signal Prediction It may not always be feasible or even possible to survey all areas and rooms of the project Instead signal prediction can be used There are two main types of signal prediction in ESS e Signal prediction of simulated access points All signals from the simulated APs are predicted e Signal prediction of measured surveyed access points The signals outside the surveyed areas are predicted Ekahau Site Survey can predict signal propagation through floors There are five options to choose Off No signal prediction is used at all Currect floor Signal propagation in current floor is only predicted One floor Signal propagation to one floor above and below is predicted Two floor Signal propagation to two floors above and below is predicted Figure 8 7 Signal Prediction options Signal Prediction il i H E Off Two Current One Floor floor Floor By default Signal Prediction is enabled If it is necessary to see only the measured surveyed data of the access points and disregard all the prediction calculations disable Signal Prediction Chapter 8 Analyzing the Wi Fi Coverage 58 and Performance Figure 8 8 Viewing a measured access point with signal prediction on the right and without on the left
14. The higher the antenna the weaker the signal strength will be below the AP To adjust the height click on the Edit button and edit the height text field e Antenna down tilt Some antennas are meant to be tilted down for optimal coverage To adjust the downtilt click on the Edit button and type in the downtilt in degrees to the textbox e Notes Add text information about the access point Chapter 4 User Interface Overview 22 To edit the properties of multiple APs at once select the simulated access points you would like to edit and click Actions gt Edit Selected Simulated Access Points Figure 4 10 Adjusting simulated access points Se Example Project Pro_X esx Ekahau Site Survey Eile Edit View Site Device Help ia al lala Access Points H Surveys E Building Showing 56 56 Actions D not on any Map 22 22 D A 4 2 TO LES Kitchen S O a Edit de 240 P e 802 SS 3 LU 802 11b zne C toimisto4 A z is Gr Ber 802 119 25 mw 2 4m ons ez un Cisco AP1250 R amp D op IT Unknown Cisco AP1250 ANT2430 2 4GHz 11n Extension Channel N A I Greenfield Supported Spatial Streams 2 gt KW Short Guard Interval 802 11 Technology a b g n Click on the Edit button to adjust antenna properties Tx Power Height and Antenna downtilt properties Antenna type Channel 802 11
15. When in this mode all the access points broadcast the same MAC address This is unlike other access points that broadcast at least one unique MAC address per access point Because of Meru Virtual cell the mobile devices only see a single MAC address being distributed by all the APs Thus the mobile devices think they re constantly connected to a single AP even though they are actually roaming between several APs According to Meru this makes the roaming times shorted Because the MAC address is typically the unique identifier of an access point most site survey tools will not work well with Meru infrastructure they cannot show per AP coverage or performance maps just one huge coverage area for all the APs Unlike most site survey tools Ekahau Site Survey can read the unique MAC addresses of the Meru access points which will allow the APs to be displayed normally Ekahau Site Survey displays the Meru unique MAC addresses instead of the MAC addresses seen by other 802 11 clients This feature is enabled by default and requires no user intervention Chapter 13 Additional Information 94 95 Index Index Symbols N 802 11n network health 62 characteristics 24 extension channel 24 greenfield mode 24 live details view 76 SGI 24 spatial streams 24 802 11n channel bonding 71 A access point list 14 measured 19 multiple MAC addresses per AP 22 simulated 21 38 after the survey 78 analysis 53 ass
16. absorption factor by diving the signal loss with the wall width in meters Insert the new wall material into the conf file save the file and re start ESS Note It is recommended to make a backup copy of the wall materials list before editing it 6 1 1 2 Duplicating Maps with Similar Layouts If several floors have similar or fairly similar wall layouts it is recommended to duplicate the map to avoid unnecessary drawing of walls When you duplicate a map the map image and the walls will be duplicated This allows you to only draw the walls to a single floor and use the same wall structure for the other floors If the floors are slightly different it may still be easier to duplicate the floor and then edit the walls for the areas that are not similar Click Site gt Duplicate Map to make a duplicate of the map 6 1 2 Indicating Network Coverage Areas In order to create the automated network plan you will have to define the network coverage area where you would like to have Wi Fi coverage To do this use the Coverage Area tool in the Planning tab to indicate the areas where you need Wi Fi coverage When using the tool left click to add points to the polygon and right click to end the polygon Chapter 6 Designing a Wi Fi Network 36 Figure 6 2 Coverage Area and Auto Planner buttons x for My Access Points D Fo Ms f 1 1 Click the Coverage Area button to define network coverage areas 2 Click
17. and make use of the many features of Ekahau Site Survey and demonstrate how these features can benefit you in the design deployment and troubleshooting of Wi Fi networks Note Do not operate Ekahau Site Survey and drive or carelessly walk at the same time Stop using ESS and switch off the Wi Fi device when it is forbidden to use radio equipment or when it may cause interference or danger 1 1 Overview Deploying and maintaining wireless networks offers many challenges beyond those of traditional wired networks Because of the unpredictable and invisible nature of wireless visual professional tools are needed to achieve high performance In order to support the business requirements of the organization several important factors need to be considered e Wi Fi is invisible it is hard to make a clear picture of how far your network will reach and how it will work in different locations e Wireless is fluctuating and unpredictable Whereas wired networks can be said to operate in a predictable way over a long period of time wireless connections may work differently at any given time depending on the conditions e Wireless is ubiquitous Whereas a wired Ethernet only has a certain number of connection points wireless access points can host numerous simultaneous connections offering con nectivity over great distances e Capacity planning is fairly straightforward in wired networks However wireless is a shared medium where the over
18. facility Enable the tool and walk around the map while clicking on your current location when you stop start walking or change direction If you check the Auto Place APs After Survey checkbox the access points will be automatically located after the survey The GPS Record button is used for performing GPS assisted outdoor surveys Survey Inspector Inspect surveyed data in detail Click on the tool and you will see the surveyed measurements on the map Double click on the measurement to see measurement details GPS Reference Point Tool Place GPS Reference Points on the map Without the reference points the GPS coordinates cannot be converted to map coordinates and thus the GPS information cannot be displayed on the map Chapter 4 User Interface Overview 14 Icon Name Miniature Signal Description Displays the currently measured signal strength green and noise studi View red values Click to access the Live Network Status view Shows No Devices if no devices are present F Network Adapter Change Network Adapter Settings Click on the network adapter to Setting change its settings or to select a different adapter to be used r E imnnmmmnl IL Miniature Ping View End to end Testing Click to configure the host that is being used for end to end network connection testing and to access the Live Network Status Ping view 4 3 Visualization Selections Yo
19. locations for your Wi Fi access points e Antennas and their alignment e Optimal AP configurations such as transmission power and channels e The predicted coverage and performance of your network Figure 6 1 A network plan with walls simulated access points and floor alignment points Example Project Automatic Plann File Edit View Site Device Help Access Points fo surveys E Bulding x Showing 14 14 APs W Floor 1 5 5 S e Wu 12422 amR ANTS135 1 DG gt SC Ce ep e RUE gt OU Bite a ee Ou My T2422 aIR ANTS135 2 P Wa D E Est Ve n 52 E Eat E e im Wu 12422 AIR ANT5135 3 Da Le NE ae CE Bite Fi n ae 1 ZB Este Ba e CA 3 ae T2422 AIR ANTS135 9 l i D 1B Auch S mg C E Este a GE DE Eu ig T2422 AIR ANT5135 5 Da He D 2e dei Pe 8 Este ie e 1 W Floor 2 4 4 Chapter 6 Designing a Wi Fi Network 34 If you leave the access point transmit power settings to Automatic Radio Management Radio Resource Management Radio Management from your wireless LAN management software using the default 25mW transmit power is recommended when creating simulated APs 6 1 Creating a Network Plan with Auto Planner Note You can use the Auto Planner only with empty projects In case there are simulated access points
20. locations on the map Access Point Notes Network coverage and performance visualizations overlaid on a map Network Requirements Survey routes marked on the map Optionally an image in the front page 86 Printing 87 Chapter 10 Reporting Exporting and Printing 10 2 Exporting and Printing Images To export or print the currently displayed image click File gt Export Image or File gt Print Image Note Your current selections will impact the image For example if you have selected a visualization for Selected Access Points the exported or printed image will be constructed with the same settings What you see in the user interface is what will be exported or printed Chapter 10 Reporting Exporting and Printing 88 89 Chapter 11 Real Time Location Tracking RTLS Features 11 Real Time Location Tracking RTLS Features Assets and people can be accurately tracked using a standard Wi Fi network to improve safety and to locate assets quickly when necessary Ekahau Site Survey fully integrates with Ekahau Real Time Location System This allows you to use your existing site survey data to be used for calibrating the location system To enable the location tracking features check the Enable RTLS Features checkbox under File gt Preferences After re starting the software go to the Help menu and open the Ekahau Site Survey Guide for Deploying RTLS for more information about the RTLS Features If real time location
21. network Most office and home environments have much smaller delay spread than 200 ns typically 50 100 ns Thus Short Guard Interval of 400 ns can boost the throughput by avoiding unnecessary idle times in the network 4 5 10 1 Measured Access Points Ekahau Site Survey can measure the 802 11n characteristics during site surveys To view the characteristics of an 802 11n AP click the 11n button on the Access Point List view Figure 4 14 802 11n characteristics IK My cisco A307 D la ofi2 wea2 ofi3 wea testissid2 wee n 52 inistB4 nb berg Ww 1F My cisco A319 D LST fan ofia wea testissid2 w 00 1F 9e 8d 20 8c 3 ist ab bunt 00 1F 9e 8d 1c 6c 3 ensin Channel Short Guard Interval SGI On Greenfield Mode Off Maximum Spatial Streams 2 In the above example the AP with Cisco A307 SSID has bonded two channels 52 and 56 where the channel 56 is the extension channel The AP has SGI enabled Greenfield mode disabled and it uses two spatial streams 4 5 10 2 Simulated Access Points The 802 11n characteristics can also be adjusted when working with simulated 802 11n access points To adjust the characteristcs of an 802 11n AP click the Edit button of the simulated AP on the Access Point List view Note that access points with multiple radios need to be adjusted one radio at a time Figure 4 15 Adjusting 802 11n characteristics of an simulated acces
22. one access point only for example you would select Show Signal Strength for Selected Access Points and just select the AP you want to see the signal strength for The AP can be selected either from the map or from the AP list When the visualization is displayed roll over the map with the mouse to see the actual values on the map at a given point as a tooltip Figure 8 1 Visualization view wo e aaaa Access Points jij Surveys fj Bulking Songsp ses D gt Not placed on any Map 1 1 H W Floor 1 2 2 Z My cisco AP1250 1 amp D e D 1e my Nortel AP 2332 1 DN mem O e D Foor2 1 1 D Floor 9 Survey 5 5 1 Visualization type 2 Visualized access points 3 Refresh visualization button Uncheck the box to manually refresh the visualization 4 Visualization options 5 Visualization 6 Editing legend Note Automatic refresh option refreshes the visualization automatically when changes are made Automatic refresh works well for small and medium sized projects If you are working with a large project you may want to disable the automatic refresht to keep the software running smoothly and only refresh the visualization when needed Chapter 8 Analyzing the Wi Fi Coverage 54 and Performance For quick reference for visualization see the tables below Visualization Purpos
23. points Alternatively you can use your integrated network adapter to scan access points when not performing end to end connectivity testing Figure 7 1 The Miniature Signal View should show signals updating before starting the survey ua lt P e If you are using an inappropirate driver with your external adapter a warning will be given To achieve the optimal accuracy use the driver provided by Ekahau For information on how to update the driver see chapter Wi Fi Network Adapter Driver Update Figure 7 2 A warning will be given if an inappropriate driver is used La PO Chapter 7 Site Surveys Ensuring Suffi 44 cient Coverage and Performance On Site e When testing the end to end connectivity ensure that you are able to collect Ping data The Miniature Ping View will display No Ping Host message if valid Ping Host has not been found By default the Ping Host is Default Gateway but it can be changed by clicking the Miniature Ping View Figure 7 3 No Ping Host message will be displayed if valid Ping Host has not been set No Ping Host e Click the Record Survey button ESS will start the end to end connectivity testing automatically if the internal Wi Fi adapter has been enabled for Hybrid Survey and valid Ping Host has been found set Figure 7 4 Miniature Ping View displaying successful Ping packets green vs lost packets red ee e Click your current location on the map to start collec
24. rogue access points and thus overly optimistic results would be displayed e Having Other Access Points selected is the exact opposite for selecting My Access Points For example if you want to show the signals from access points that are not in your network select Show Signal Strength for Other Access Points e f Selected Access Points is selected only the access points that have been selected in the Access Points list will be taken into account into the visualization For example if you wanted to see the coverage area of a single access point first highlight that access point from the AP list and then select Show Signal Strength for Selected Access Points See the example picture below Figure 4 6 Visualizing only selected access points Example Project Prose Dote Site Ser SC File Edit View Site Device Help e pls a BS He Access Points Hl Surveys G Building wv for Selected Access Points w Options Showing 9 9 APs Quick Select D Not placed on any Map 1 1 D Floor 1 2 2 D Floor 2 1 1 VW Floor 9 Survey 5 5 2 select HI Cisco ofi2 wa testissid2 wa e 00 12 07 05 87 51 2 My cisco ofi2 wa testissid2 wa e 00 19 07 05 89 51 2 Floor 9 Survyt en Chapter 4 User Interface Overview 18 1 Inthe example ESS visualizes only those APs that are selected notice the orange color 4 5 4 Selecting My Access Points During the
25. site survey all the audible access points will be detected It is important to segregate the access points in your network from the other access points such as the APs radiating from the nextdoor building The My checkbox in the AP list indicates whether an AP is in your network or not You can select My APs either one by one or by selecting multiple access points first and then selecting or de selecting the My checkbox to select or de select multiple APs to from My APs For example if you have Nortel APs and there are no other Nortel APs around 1 De select all the APs from My selection Click Actions gt Select All and then choose Actions gt Deselect from My Now none of the APs are selected as My 2 Next type Nortel into the Search text box 3 then click Actions gt Select All to select all the Nortel APs 4 To select all the searched Nortel APs as My click Actions gt Select as My and all the Nortel APs will now be selected as My 4 5 5 Renaming Access Points By default the measured access points are named by the AP brand such as Nortel Cisco or Siemens The simulated APs are named using running numbers by default To rename the APs simply click on the name field and type in a custom AP name 4 5 6 Replacing Access Points If an access point breaks down there is no need to perform a new survey There are two options you can do e Ifthe access point is replaced by another identical AP in the same location In t
26. the Auto Planner button to open network requirements dialog and to create the network plan Figure 6 3 Drawing the network coverage area Show Signal Strength m for my accesspoint E I Loes E EA Planning Survey When you are drawing the network coverage area the currently selected area will be displayed as lilac After you have drawn the desirable network coverage area it will be bordered with a dash line and the lilac colour will disappear 37 Chapter 6 Designing a Wi Fi Network 6 1 3 Configuring Auto Planner After you have defined the network coverage areas click the Auto Planner button to open the Auto Planner dialog where you can select the Network Requirement Access Point type as well as Channel Assignment Figure 6 4 Auto Planner dialog Auto Planner Plan will cover 3 maps in building Building 1 Requirements Requirement Signal strength atleast 75 0 dBm Number of APs at least 2 when signal strength at least 85 0 dB Optimize Plan for 2 4 GHz less dense 5 GHz more dense Access Points Access Point type Generic 11n Dual Radio 802 11n with Generic 2 2dBi Omni 802 11n with Generic 2 2dBi Omni Transmit power 25 mW Antenna height 2 4 m 802 11n Channel bonding on 5 GHz Short guard interval Channel Assignment Channel patterns Single channel None Regulatory Domain Europe 2 4 GHz Channe
27. the rectangle on the right hand side of the AP The rectangle will become highlighted with orange when it is selected on e To select radios on the AP List click on the handle on the left hand side of the radio prop erties field Chapter 4 User Interface Overview 16 Figure 4 4 Selecting one radio at a time Selecting Multiple Access Points at Once To select multiple access points at once you have two options e To select all the access points choose Actions gt Select All Please note that if a search is used this action will only select all the searched access points To deselect all access points select Actions gt Select None e To quickly select the APs with a given SSID channel or band click Quick Select and click on the SSID channel or band to select only the appropriate APs You can also select only simulated or measured access points If you select multiple criteria such as SSID and band only the access points matching all the criteria will be selected Figure 4 5 Access Point Quick Selection ys Access Point Quick Selection AP type SSID Band Channel Measured AMX_4156 oi 802 11b 1 AMX_4160 6802 11g 2 AMX2 802 11n 2 4GHz 3 ardw aruba ap bai BATTTEST ICOM Example WISP GWeb2 heyerdahl Ten nurkki ew 4 5 2 Searching for Access Points Use the Search text box to search one or more APs Only the APs matching the search criteria will be displayed To display all access p
28. the reference points on a straight line Tip Using an external antenna for the Wi Fi network adapter improves the outdoor survey accuracy 7 2 Post Deployment and Pre Deployment Surveys Post deployment surveys are performed after the complete network is already in place Post deployment surveys are used for network verification immediately after the network has been deployed and for periodic checks to ensure the network is still operating at a required level The periodic maintenance surveys may cover the entire area or just parts of it whereas the verification surveys done immediately after the network has been built usually cover the whole desired coverage area To perform post deployment surveys no specific actions need to be taken just survey as specified in the previous section Pre deployment surveys are used for on site validation of network plan In pre deployment sur veys you would use one or few access points to ensure the network coverage and performance on site prior the complete network has been deployed Simply move the AP s between the planned locations and make a survey whenever the AP has been moved To simulate a complete network with a limited number of access points in the pre deployment survey phase use the Freeze Access Point tool The Freeze Access Point tool allows a single access point that as been placed in several locations to be treated as multiple access points Using Freeze AP you can individually vi
29. to scan either 2 4GHz or 5GHz frequency Scanning just one band reduces the overall scan time which allows more data to be collected over time which in turn allows faster surveys e Channels Select which channels to scan on 2 4GHz by adding it to the Selected Channels list Limiting the number of channels allows faster surveys Channels will only be limited if Custom channels setting is selected e Wait time per channel Set the number of milliseconds to wait on each channel for 802 11 packets probe responses or beacons The smaller the channel wait time the less time the access point has to send packets to the network adapter but the faster you can survey the facility If your wireless network is extremely crowded increase the wait time If broadcast SSID is disabled in your access points increase the wait time to 100ms or more Chapter 7 Site Surveys Ensuring Suffi 46 cient Coverage and Performance On Site Figure 7 5 The Scanning Configuration Tab Custom channels ke z Available channels Selected channels Add al gt gt Remove Wait time on channel 105 Ok Cancel Note The scan settings cannot be configured for all Wi Fi devices For example the scan settings in the built in Wi Fi adapter of an Intel Centrino cannot be configured 7 1 2 Configuring the Wi Fi Devices for Hybrid Surveys The end to end network performance testing is always made with the laptop s integrated Wi Fi netw
30. tracking RTLS is of interest visit www ekahau com to read more about Ekahau RTLS the industry leading real time location tracking system Note If you have the RTLS Features enabled but you do not use ESS to deploy Ekahau RTLS you may receive a warning about undefined Rails and Open Spaces when saving a survey project You can simply ignore this warning and choose Continue to save the survey project However if you want to avoid this warning in the future uncheck the Enable RTLS Features checkbox under File gt Preferences and re start the software Chapter 11 Real Time Location Tracking RTLS Features 90 91 Chapter 12 Troubleshooting 12 Troubleshooting This chapter includes some of the most common troubleshooting scenarios The program does not start or is very slow Ensure you have enough memory in your laptop and that all other system requirements are met Ensure you are logged in as the computer administrator or have administrative privileges Ensure that the pixel sizes of the maps you have inserted are reasonable preferably below 5000 x 5000 pixels Ensure all other programs are stopped when running Ekahau Site Survey Ensure that the scale has been set to each map If the program is running slow disable Google Desktop third party Virus Spamware Scanners within reason ensure your computer will not get affected and other such applications The software does not accept my license Ensure that y
31. 2 1 3 ms 18 11 31 42 00 1F 9e 8d 1c 6e testissid2 1 5 ms 17 11 31 41 00 1F 9e 8d 1c 6e testissid2 1 6 ms 16 11 31 41 00 1F 9e 8d 1c 6e testissid2 1 7 ms 15 11 31 40 00 1F 9e 8d 1c 6e testissid2 1 3 ms 14 11 31 40 00 1f 9e 6d 1c 6e testissid2 3 2 ms 13 11 31 39 O0 1F 9e 8d 1c 6e testissid2 1 7 ms 12 11 31 39 00 1F 9e 8d 1c 6e testissid2 1 5 ms 11 11 31 38 00 1f 9e 8d 1c 6e testissid2 2 0 ms 10 11 31 38 00 1F e 8d 1c 6e testissid2 1 6 ms 9 11 31 37 00 1f 9e 8d 1c 6e testissid2 Clear Note You can define the target host as an IP address or as a host name When performing Hybrid Surveys ESS will automatically start the Ping tool There is no need for starting it separately 9 2 Troubleshooting After the Survey The amount of troubleshooting scenarios ESS can be used for is almost endless Here we will present a couple of the most common Wi Fi problem scenarios and how to solve them with ESS Unlike in the previous section The scenarios in this chapter assume that a site survey has been performed as the troubleshooting happens using the map 9 2 1 Finding Network Problems with a Single View After having your Requirements set simply use the Network Issues visualization to identify network trouble spots Select the appropriate visualization to look at a given network parameter in more detail 9 2 2 Basic Wireless Issues Low Coverage High Interference
32. 7 05 89 52 ofiz WPA2 Split Replace mac J wena __Spit Replacemac Replace MAC aam 11o 00 19 07 05 89 53 ofi3 WPA Split My Jeisco kitchen Bl won ofi3 wea testissid2 we 00 19 07 8c 5b 51 3 My NetGear amp F my Proxim B Le 1 The names of Cisco APs are automatically shown 2 Notes 3 Measured 802 11n properties 4 If Selected Access Points is selected the visualization will be displayed only for selected APs 5 This AP is selected Select and de select from here or from the map 6 Multi MAC and SSID access point This AP has three SSIDs and MACs 7 The channels of the AP Click to see how changing the channel s would impact the network 8 Selected as My which means that this AP belongs to my network 9 Name defaults to brand 4 5 8 Adjusting the Properties of Simulated Access Points For simulated APs you can change the following parameters e AP Band Whether the AP is 802 11a 802 11b 802 119 or 802 11n Select from the 802 11 technology button e AP Channel The frequency channel the AP is operating at Select from the channel button e AP Radio Transmission Power The transmission power at which the AP radio is transmitting the signal Click on the Edit button and edit the text field to adjust e Antenna Type Directly impacts the coverage area of an AP Click on the Edit button and click on the drop down menu to select an antenna e Antenna Height
33. Coverage and Performance e Minimum Data Rate which should be adjusted if connections at low speeds are disallowed in the network For example if your network is only set to accept speeds 6Mbps or higher set the Minimum Data Rate accordingly e Network Load affects SNR as it affects interference The higher the Network Load the lower the SNR will be e Different Wi Fi Adapters have different characteristics for receiver sensitivity and antenna implementation Thus some adapters provide a higher SNR in a given location than others Note In ESS the Noise consists of co channel interference generated by nearby 802 11 access points To see the impact of non 802 11 noise sources such as Microwave ovens use a spectrum analyzer Figure 8 16 Signal to Noise Ratio visualiation Kee Ra Alignment Point 1 Alignment Point 2 Low SNR High SNR SNR below OdB Noise level greater than signal level Click to adjust SNR visualization value range colors etc PON gt Chapter 8 Analyzing the Wi Fi Coverage 68 and Performance 8 3 8 Strongest Access Point The client devices have a tendency of associating to the strongest audible access point by default To visualize which AP is the strongest in each location use the Strongest AP visualization The strongest AP visualization is affected by the Adapter selection since some adapters are not able to associate to some access points For example an 802 11b g adapter is not able
34. II Band Ch 100 136 0 00 Timeframe 1 43 Uni III Band Ch 149 161 Finding Interference Issues When using a spectrum analyzer the goal is to find the interferers in the Wi Fi frequencies The spectrum analyzer will display all the activity in the selected frequency space meaning you will see Wi Fi activity as well as other activity If you have already deployed Wi Fi at the site you will need to be able to separate Wi Fi signals from the actual interference An example is shown in the image below You can also use the Signatures tab in the right hand side of the Chanalyzer user interface to see how Wi Fi compares to the other interferers Figure 9 9 Wi Fi activity and microwave oven interference on channel 11 1 Interference caused by a microwave oven 2 Wi Fi activity on channel 4 3 Wi Fi activity on channel 11 85 Chapter 10 Reporting Exporting and Printing 10 Reporting Exporting and Printing With Ekahau Site Survey you can easily output the network information by either generating a comprehensive report or by exporting or printing the images one by one 10 1 Generating Reports Generating a report constructs a comprehensive report in RTF or PDF format To generate a report go to File gt Report From the dialog choose the visualizations you want to be reported and make the following selections Selection Description Folder The output location of the report File The file name of the re
35. Problems like low coverage and high interference are easy to identify and troubleshoot 79 Chapter 9 Troubleshooting Detecting and Solving the Most Common Wi Fi Problems With low coverage identify the spots of low coverage by selecting Show Signal Strength for My Access Points After identifying the spots with low coverage first check that all of your APs are transmitting signals If the APs are working properly you may need to increase transmission power or add more access points to the problematic areas recommended To simulate how adding an AP to the problematic area would impact the coverage and performance use the Simulated Access Point tool in the Planning tab to place a Simulated AP on the map Note Drawing walls prior to placing Simulated APs is recommended To identify high interference or low Signal to Noise Ratio use the respective visualizations If SNR is below 0 or interference is above 70dBm issues are likely to occur After identifying the issue ensure first that the channel separation of your network is optimal Nearby access points should not be on the same or nearby channels If there rogue or neighbor access points audible to your facility check their signals and channels by selecting Show Signal Strength for Other APs Use the Signals at Channel visualization option to see which channels are crowded If you suspect that there is non 802 11 interference such as cordless phones microwave ovens or other
36. Show or hide the survey routes View GPS Reference Points Show or hide the GPS Reference Points View Access Points Show or hide the access point icons View Access Point Names Show or hide the access point names View Floor Alignment Points Show or hide the Floor Alignment Points View Walls Show or hide the Walls Site Add Map Add a map to the Project Site Duplicate Map Make a duplicate of the currently displayed map Site Change Map Image Change the currently displayed map image Site Remove Map Remove a map from the Project Site Active Map Select the currently displayed map Site Edit Requirements Edit the network requirements Chapter 4 User Interface Overview 28 Menu Selection Description Site Start Auto Planner Open Auto Planner dialog and choose network requirements for the network simulation Site Locate Surveyed Access Points Automatically place the access points that were detected during the survey on the map Site Clear Surveyed Access Points Loc Clear all AP locations from the map ations Site Auto Detect Multi MAC APs Automatically detect access points distributing multiple MAC addresses Site Replaced Access Points View Replaced Access Points Site Edit Project Notes Edit text notes about the Project Device Live Network Status View the currently audible Wi Fi signals and quickly troubleshoot issues without a map Device Devices Shows the currently connected Wi Fi devic
37. ab of Live Network Status displays the current signal measurements from all audible access points Click Reset to clear the list of currently audible APs Figure 9 1 Signals view displays all currently audible access points Live Network Status Signals Requirements 802 11n Details Ping Device Ekahau NIC 300 802 11a b g n Network Adapter Packet Scheduler Miniport MAC SSID Security Technology Channel Signal Noise 00 18 9b 3F 94 2alIHK WEP 00 18 9b a4 7a d0 TAPSARI WPA 00 19 cb 8b d3 72 2yxELD372 WPA 00 22 3f a3 98 e8laruba ap WPA 96 00 22 b0 80 f8 66 heyerdahl WPA 96 00 24 01 df bd a3 heyerdahl WPA2 H in 87 Scanning duration 1 640 miliseconds Results 8 9 1 2 Requirements The Requirements tab of Live Network Status compares your network requirements with the current network measurements If the network requirements are met at the moment green color will be Chapter 9 Troubleshooting Detecting 76 and Solving the Most Common Wi Fi Problems shown for each measurement If your network requirements are not met right now red color will be shown for that requirement You need to choose the access points that are considered yours when using the Live Network Status for troubleshooting If you have not defined My APs for example when using Live Network Status on a blank Project without any surveys performed choose Identify My Access Points by SSID a
38. all capacity is shared by multiple users at any given time For these and many other reasons proper tools are required when designing deploying maintaining and troubleshooting Wi Fi networks Ekahau Site Survey is a state of the art tool that makes Wi Fi understandable and allows you to get the best out of your Wi Fi network 1 2 Features Ekahau Site Survey is designed for use throughout the life cycle of your Wi Fi network Whether you are in the planning deployment verification or troubleshooting phase ESS has features to assist you The key features of ESS are e Automated Network Planning Automatically determine the optimal the number and location for your access points prior to physical deployment Ekahau Site Survey Pro only e Verification Perform active and passive indoor and GPS assisted outdoor site surveys to verify coverage and performance GPS support in Ekahau Site Survey Pro only e Analysis and Optimization Visualize network coverage and performance fine tune them and simulate changes in the network or environment e Troubleshooting Solve various Wi Fi issues e Reporting Generate reports of Wi Fi coverage and performance Ekahau Site Survey Pro only Chapter 1 Introduction 2 1 2 1 Feature Differences Between Professional and Standard Ekahau Site Survey Standard includes tools for network verification analysis optimization and troubleshooting Ekahau Site Survey Professional version includes all the fea
39. ame time Packet Loss occurs when ESS fails to receive a ICMP response packet to the ICMP request packet from the target host The Packet Loss can be caused by several factors such as interference and or congestion in the network medium corrupted packets faulty network hardware or faulty network drivers The Ping Packet Loss visualization displays the relative Packet Loss over the floor map The Packet Loss is calculated from the 10 last packets Chapter 8 Analyzing the Wi Fi Coverage 70 and Performance Figure 8 19 Ping Packet Loss visualization e Ping Packet Loss 0 10 Ping Packet Loss 50 60 Ping Packet Loss 90 100 Click to adjust the visualization value range colors etc Prob 8 3 11 Associated Access Point The Associated Access Point visualization displays the access point the client adapter was asso ciated with in each floor area The visualization is especially handy for recognizing roaming behaviour such as with which access point the wireless network adapters typically associates in each area Thus you can use the visualization to recognize areas where you might want to consider re positioning access points for better load balancing 71 Chapter 8 Analyzing the Wi Fi Coverage and Performance Figure 8 20 Associated Access Point visualization Kei 1 Moving the mouse cursor over each area displays the MAC address and SSID of the Access Point the client adap
40. ccescecuntsstessixtsiccuvedscucssecustesd s menn cocuddeeurds ined e ee 1 Re VE 1 12 D EE 1 1 2 1 Feature Differences Between Professional and Standard 2 US ae le RT ee E 2 1 4 Backward Compatibilty ET 2 1 4 1 Compatibility with previous Ekahau Site Survey versions 2 1 4 2 License compatibility with previous Ekahau Site Survey versions 2 ZAMS tA Ah EE 5 2 1 System Requirements and Software Limitations ccc seeeeeeeeeeeeeeteeeennnaeees 5 2 1 1 Supported Wi Fi Adapters sise 6 2 2 How 10 EC EE 6 2 2 1 Wi Fi Network Adapter Driver Update c cseccsccceeeeeeeceeeeeceeeeeaeeeaeeees 6 2 2 2 Upgrading the Ekahau Site Survey License 7 3 Designing Deploying and Troubleshooting Wi Fi Networks 9 3 1 Ekahau Site Survey and Other Wi Fi Tools 10 4 User Interface Overview ccsccceeeceseseeeeeeeeeeeeseseeeeneeeeeeeeeeeeesneneeseeeesesesecneeeeeeeeneesenes 11 41 Map WEE 11 4 2 Planning and Survey Tabs EE 12 4 3 Visualization Selections 1 152 tees Sane entente ein lanta ht ann ttese te 14 AA KOTO o te Ans M A E ES tnt nl e tn a tt dt tte dieser 14 4 S The Access ll EE 14 4 5 1 Selecting Access Points sein annales 15 4 5 2 Searching for Access Points sugue nude ste demain entame 16 4 5 3 Visualizing Selected Access Points ui 17 4 5 4 Selec
41. ccess point click on the MAC address button of the falsely joined AP on the AP List view and after that click on the Split button of the MAC address you want to be distinquished Figure 4 13 Splitting access points 10M My cisco entrance KE lt ofi2 wea 00 19 07 05 89 5c 3 LI etetog pp furniti RED K Repl MAC Iv My cisce a E eg Ze wong ofiz 11a 00 19 07 05 89 5d ofi2 WPA2 Split Replace MAC Il EE sia on 1on7 nc 0 PRE bk RE EN ei 11a 00 19 07 05 89 5e testissid2 WEP Split Replace MAC 4 5 10 802 11n Characteristics 802 11n is the latest iteration of Wi Fi promising higher bandwidth up to 600Mbps range reliability and throughput than its predecessors 802 11a b g standards Some of the main technical charac teristics that enable these improvements in 802 11n are the number of Spatial Streams which is related to MIMO Multiple Input Multiple Output Extension Channel Greenfield and Short Guard Interval SGI Spatial Streams In 802 11n the data stream is divided into multiple parts called spatial streams Each spatial stream is transmitted through separate antennas to corresponding antennas on the receiving side When the number of spatial streams is doubled from one to two the maximum data rate is also doubled from 150Mbps to 300Mbps With three spatial streams it is possible to achieve 450Mbps data rate and with four spatial streams 600Mbps data rate Extension C
42. ckets In addition to requirements you can choose the following conditions that affect the coverage and network performance e Use Noise from the source of the noise data choose either Measured Data Simulated Interference or Automatic which uses Measured Data when available e Network load the estimated amount of wireless traffic in the network e Adapter the end users wireless adapter To define the Requirements select Site gt Edit Requirements Figure 5 2 Setting the wireless network requirements using the Requirements dialog Requirements Requirement Basic Connectivity l New Duplicate Criteria H Signal strength at least 85 dBm IB Signal to noise ratio at least JEE dB T Data rate at least 1 Mbps Number of access points at least 1 when signal strength 85 dBm el Ping round trip time at most 500 ms o Packet loss at most 10 Conditions Use Noise from simulated Co Channel Interference RQ 0 20 40 60 80 100 Network Load Custom 5 wl Adapter Raw Measurements The Requirement defines what your network is used for You can either select one of the pre defined Requirements such as Basic Connectivity or Voice over WLAN If none of the Requirements matches the purpose your network will be used for you can either customize the existing profiles or create new ones If you want to keep the existing Requirement and want to make a slightly different one yo
43. d and a per floor access point count will be displayed as well as the total number of searched access points Tip You can also visualize the coverage easily per SSID by using Quick Select and selecting Show Signal Strength for Selected Access Points 9 2 4 Defective Access Points Defective APs can be found after the survey by looking at the AP locations If ESS has not dis covered any access points close to a location where an AP should be the AP is probably broken Visualizing Signal Strength for My Access Points may also reveal a broken AP If there is low coverage near a location where an AP should be operating at it s probably broken The third way of discovering broken APs is to use the AP list Either use the Quick Select or the Search box to select an SSID and look at the total count of APs or the count of APs per map in the AP list Finally the AP may provide good signal coverage but the Ping Packet Loss may show 100 loss for the AP In this case check the cabling of the AP as well as the AP bridging and VLAN settings 9 2 5 Rogue Access Points ESS automatically locates access points after the survey After identifying and selecting My APs the detected rogue APs will be the ones that are displayed in red color If there are APs that are not automatically located and are not a part of your network they are probably not in your facility and may not be distributing strong enough signals to interfere with your netwo
44. d 18 6d Unknown SSID 100 104 300 0 Mbps 00 1F 9e 8d 18 62 Unknown SSID 144 4 Mbps 00 1F 9e 8d 18 62 Unknown SSID 144 4 Mbps 00 1d 73 bb 0b 38 SOPIMA 144 4 Mbps 00 1d 73 73 3c 2clAMX_4160 144 4 Mbps OO 1b 11 e5 cO 7b 113 130 0 Mbps 00 1b 11 69 F9 8d tikal 130 0 Mbps 00 16 01 e6 dc 40 Gw eb2 6 7 Mbps ESERE ES E KA KAN KA KKKS KAKA ESE EA K N NN NNN NIN NNI NINN N N N COOC Note The 802 11n details can also be viewed per each 802 11n AP by clicking their 11n button in the Access Points list 9 1 4 Ping The Ping tab in the Live Network Status view allows testing connectivity between the Site Survey laptop and a selected server The ping host is user configurable By default the Default Gateway is used as the ping host The Ping tool can be used without performing any surveys Chapter 9 Troubleshooting Detecting 78 and Solving the Most Common Wi Fi Problems Figure 9 4 Live Network Status with Ping tool Live Network Status Signals Requirements 802 11n Details Ping Host www ekahau com 194 79 17 79 22 22 loss 0 0 Round Trip Time milliseconds Seqeuence Sending time Association 2 0 ms 22 11 31 44 00 1F 9e 8d lege testissid2 3 6 ms 21 11 31 43 00 1f 9e 6d 1c 6e testissid2 1 7 ms 20 11 31 43 00 1F 9e 8d 1c 6e testissid2 1 9 ms 19 11 31 42 00 1F 9e 8d 1c 6e testissid
45. different floors ensure that each floor is connected by a minimum of three reference points 6 3 3 Visualizing Floor to Floor Signal Coverage To visualize how access points are audible from one floor to another Ensure from the Building tab that your 3D propagation model has been correctly defined Clear the AP selections by clicking Actions gt Select None Select a floor that you want to see the signals radiating to Using the AP list select the access points that are of interest for example the access points on the floor above and floor below the floor you re currently looking at 5 Select Show Signal Strength for Selected Access Points If any of the APs on the floors below and above are audible to this floor you will see their coverage PON gt 43 Chapter 7 Site Surveys Ensuring Suffi cient Coverage and Performance On Site 7 Site Surveys Ensuring Sufficient Coverage and Performance On Site 7 1 Performing Site Surveys With Ekahau Site Survey you simultaneously perform traditional passive surveys as well as active surveys this is called Hybrid Survey Passive surveys measure signal strength SNR and other information whereas active surveys measure end to end connectivity During the active survey an end to end connection is made to a specific host ensuring that the network truly works and delivers the required performance The end to end network connectivity testing can be used for e Detecting significant
46. ds Dhadak hadta eetaveciusett ued deanna ciaelnnts 77 9 2 Troubleshooting After the Survey ini 78 9 2 1 Finding Network Problems with a Single View ecce 78 9 2 2 Basic Wireless Issues Low Coverage High Interference 78 Ekahau Site Survey 9 2 3 Misconfigured TR 79 9 24 Detective Access PONTS orero danser ed S ch gg 80 9 2 5 Rogue e ai SA URSS ET teint Mere naman Ana A nas vanadate 80 9 2 6 Misconfigured 802 11n settings 2 0 0 cece eee eeeeeenneeeeeeeeeeeeeneneeeeeeetees 80 9 2 7 Connectivity and Latency ISSUES 00 0 0 eee eee cette eee eeettaeeeeeeeeeeeeneneeeeeeees 80 9 3 Troubleshooting Non Wi Fi Interference Using Spectrum Analyzer 81 9 3 1 Using Wi Spy DBX Spectrum Analyzer sssssseeseeeeeeeeeerererrressrrerrrrnssssrreene 82 10 Reporting Exporting and Printing ns 85 10 1 Generating Reports stees Ne CAE EEGEN Kiin ENAA ERENER EES eieh a 85 10 2 Exporting and Printing Images EE 87 11 Real Time Location Tracking RTLS Features ccceeeceeeeeeeeeeeeeeeeeeeeeeneeeeeeeeeneees 89 12 Troubles ho otn A WEE 91 13 Additional Information ss 93 13 1 Meru Mute Geteste Re ee 93 vi Ekahau Site Survey 1 Chapter 1 Introduction 1 Introduction Welcome to Ekahau Site Survey ESS ESS is a tool for deploying and maintaining high perform ance 802 11 Wi Fi networks This user guide is designed to help you to understand
47. e Data Rate What is the estimated data rate in Mbit sec for the clients Interference Noise How bad is the co channel interference in dBm Network Health Does the network meet your requirements Network Issues If requirements are not met what is wrong Number of Access Points How many APs are audible in each location Signal Strength How good is my signal coverage in dBm Signal to Noise Ratio How much stronger is the useful signal than the co channel interference in dB Strongest Access Point What is the strongest access point at each location Ping Round Trip Time What is the network latency between a client and host Ping Packet Loss What is Packet Loss Calculated from the last 10 packets Associated Access Poin With what Access Point was the client associated with 802 11n Channel Bonding Where has 802 11n Channel Bonding been enabled Visualize for Purpose All access points Display the visualization for all the access points My Access Points Display the visualization only for the APs checked as My Other Access Points Display the visualization only for the APs NOT checked as My Selected Access Points Display the visualization only for the APs selected from the list or the map Note In order to see any visualization surveys need to be recorded or at least one simulated access point needs to be placed on the map 8 1 Visualization Options V
48. e wider the measurement frequency the slower the results will be updated Start frequency means the lowest frequency that the spectrum analyzer will scan For 2 4GHz this could be 2400Mhz for example Stop frequency means the highest frequency that the spectrum analyzer will scan In the EU 13 channels used you could use 2480 In Japan 14 channels used this could be set slightly higher and in the US slightly lower 11 channels used Measurement accuracy vs measurement speed To increase the measurement accuracy you can adjust the Step Size and Resolution Bandwidth The smaller the step size the higher the accuracy but the longer time it will take for the analyzer to sweep the frequency meaning lower measurement speed Figure 9 7 Wi Spy DBX Spectrum Analyzer user interface Chanalyzer 3 2 for Wi Spy Cet Pie Vew Reports Hep wi Spy De 1 A EHM SIMNULYNOIS 3 2 EI 2 D E 5 E a a o Spectral View Topographic View Configuration Side Bar Planar View BONS Note You can quick adjust the frequencies to look at by right clicking over the Planar View s channels numbers without knowing the exact frequency of each channel Chapter 9 Troubleshooting Detecting 84 and Solving the Most Common Wi Fi Problems Figure 9 8 Quick adjusting the frequencies to look at PLANAR VIEW Current Average Max Zoom to Channel 6 Full 2 4 GHz Band Full S GHz Band Uni I Band Ch 36 64 Uni
49. e you want to inspect or right click on a Survey in the Surveys list and select Inspect A Survey Inspector window will open displaying the recorded signal readings in the point nearest to the clicked location as well as measured Round Trip Time Ping and the associated Access Point during the measurement An orange dot on the map will indicate which measurement point is currently analyzed The window will also show the recorded data over time for a given survey Use the Next and Pre vious buttons to move to the next and previous survey point along the survey path To analyze the measurement data for select access point s highlight the APs on the AP list in the dialog Chapter 7 Site Surveys Ensuring Suffi cient Coverage and Performance On Site Figure 7 6 Survey Inspector allows you to analyze the signal behaviour in more detail Survey Inspector 2009 10 27 13 40 Device Ekahau NIC 300 802 1 1a b g n Network Adapter Packet Scheduler Miniport SSID Security Technology Channel Signal einal WEP 11b 7dlapila WPA Tig notava WPA 11g Wen D WPA 119 2 PA iia Se T 0F 7d 04 20 71 heyerdahl 91 heyerdahl 4 heyerdahl LEE AIR 40 Web2 Sb lekahau_du f2 1F1b7 ekahau_du Signal Strength EISE 00 19 07 05 89 5 00 19 07 05 89 5d Unknown 5 5e Unknown 5 Unknown 5 52 Unknown 5 53 Unknown 5 00 19 07 8c 5b 5c Unknown S
50. ed between access points on nearby floors This must be accounted for also in the network design To simulate a multi floor model in ESS you will need to define the building layout the floor order height and floor material and set at least three Floor Alignment Points per floor 6 3 1 Defining the Building Layout Figure 6 7 A sample building view enabling 3D planning for two floors Example Project Pro esx Ekahau Site Survey File Edit View Site Device Help gh ERA Access Points Il Surveys a Building 3D Status OK Building 1 Map Floor 2 v Show Sigr bg Planning Floor 9 Sur 0 5 mp Thin Floor 20dB m v Map Floor 1 0 5 ny Office US 30dB m v Select building 3D planning status indicator Add Remove buildings Floor material Map image Add Remove floors DARON Chapter 6 Designing a Wi Fi Network 7 Floor height To define the building layout go to the Building tab in the left hand side lists 1 Assign a map image with the floor You will need to select the appropriate map image for each floor It is important to note that the lowest floor is on the bottom in the Building view A single map can only be assigned for one floor 2 Selecta floor material Select the floor material that best matches your environment 3 Set the floor height Measure the height of the floor from floor to ceiling and set it
51. erent radio characteristics Figure 8 11 Interference visualization Alignment Point 2 High interference Low interference Very low or no interference Adjust interference visualization value range colors etc PON gt 8 3 3 Network Health Network Health provides a summarized overview of the network It shows whether all of your network requirements see also chapter Defining Network Requirements are met or not If one or more of the network requirements are not yet Network Health will fail and red color will be displayed for those areas If all of the network requirements are met green color will be displayed To adjust the requirements click on the color legend or click Site gt Edit Requirements 63 Chapter 8 Analyzing the Wi Fi Coverage and Performance Figure 8 12 Network Health visualization Network meets requirements Network does not meet requirements Select requirement Click to adjust requirement AON 8 3 4 Network Issues If one or more of your network requirements are not met in one or more locations see also Network Health the Network Issues visualization will display which requirement fails If more than one requirement fail only one failing requirement will be displayed Chapter 8 Analyzing the Wi Fi Coverage 64 and Performance Figure 8 13 Network Issues visualization Insufficient signal strength Network meets requirement Not enough audible access points Insuf
52. es Help Quick Guide Open the Quick Guide Help User Guide Open the User Guide Help About See product information upgrade license 4 9 Software Preferences To adjust software preferences go to File gt Preferences The preferences include Changing the length unit meters feet Setting the regulatory domain to limit network adapter scanning Enabling or disabling Real Time Location Tracking System features Enabling or disabling automatic map scrolling while surveying 29 Chapter 5 Starting to work with Ekahau Site Survey 5 Starting to work with Ekahau Site Survey 5 1 Starting Ekahau Site Survey After the installation ensure the following before starting Ekahau Site Survey e For traditional passive surveys A supported Wi Fi adapter is enabled and connected to your laptop Visit http www ekahau com devices for the list of supported adapters e For Hybrid Surveys A supported external Wi Fi adapter is connected to your laptop and a supported integrated Wi Fi adapter is enabled and associated with a Wi Fi network using the Windows Wi Fi Management tool All other programs are closed You are logged in as the computer administrator or have administrative privileges To start Ekahau Site Survey click Start gt Programs gt Ekahau gt Ekahau Site Survey 5 2 Setting the Map and Scale The functionality of the program mostly relies on the floor plan s of the facility You will need to insert at least one map and s
53. essed by ESS may not be exact You can move the AP to its exact location by simply dragging the AP to the desired location when using the Edit tool After an AP has been manually moved the Auto Locate features will not try to locate the AP any more Also if you exit the program or re open the project the current AP locations will be fixed and the Auto Locate features will not try to locate those APs any more However all the newly discovered APs will still be automatically located The Automatic Placement will only try to locate the access points that are well audible surveyed signal strength has exceeded 50dBm in one or more locations This is to avoid locating the access points inaccurately To place an AP that has not been automatically placed just drag and drop the AP from the AP list to the map To find the position of a single AP click on the Drag on the map to place text in the AP list and select Automatically Place Access Point 7 4 Selecting My Access Points After the surveys have been completed and you have located your access points you should indicate which APs actually belong to your network My access points are defined by using the My checkbox in the AP list By default all the APs are checked as My You need to uncheck the APs that are not a part of your wireless network Warning IMPORTANT If your My APs are not properly selected the visualizations as well as many other features will not work properly
54. et its scale For multi floor buildings add multiple maps one for each floor Note Maps larger than 5000 x 10000 pixels are not recommended to be used as this slows down the software For optimal performance please use maps smaller than 5000 x 5000 pixels To insert a map click Site gt Add Map or click the sign next to the map selector The following image formats are supported for maps BMP WBMP JPG JPEG PNG GIF SVG SVG drawings DWD DXF CAD drawings You also need to set the scale for each map To set the scale you need to know the distance between two points on the map It is recommended to use a measuring tape to measure the distance between the points Once measuring the real world distance set the scale in ESS Select the scale tool Indicate the distance between the two points by clicking the first point and holding down the left mouse button while moving the mouse pointer to the second point e You will see a line between the two points and a tooltip indicating the number of pixels Click on the tooltip on the ft m field and type in the distance between the two points in feet or meters Chapter 5 Starting to work with Ekahau 30 Site Survey Figure 5 1 Use common objects whose width length is typically known such as doors to set the correct scale Press Enter to set scale Escape to revert 1 The door width is 1 meter 3 3 feet which in this map image corresponds to 50 pixels Tip T
55. ficient Signal to Noise Ratio Select requirement Click to adjust requirement Each network issue is represented by a color Oo O1 8 amp D 8 3 5 Number of APs The Number of APs visualization shows how many access points are audible in a given location The number of APs must be sufficient to ensure sufficient overlap in the network Overlap is needed for seamless roaming between access points as well as load balancing The following selections will affect the Number of APs e Minimum Signal Strength allows you to set a minimum signal strength for an AP that is to be included in the number of APs to be visualized For example if you set it to 90 the number of APs audible at stronger than 90dBm signal strength will be shown 65 Chapter 8 Analyzing the Wi Fi Coverage and Performance Adapter affects the Number of APs visualization as some adapters are more sensitive and can thus hear more APs in a given location than the others Figure 8 14 Number of APs visualization Floor 9 Survey e RONDS No audible APs Lots of audible APs Only 2 audible APs Click to adjust the visualization value range colors etc 8 3 6 Signal Strength The Signal Strength visualization displays the signal strength of the selected set of access points in dBm By default the signal strength of the strongest access points per location will be displayed Signal Strength has the following options accessible via Visualization Options
56. hannel The 802 11n s optional extension channel is used to double the available bandwidth to achieve higher data rates This is done by bonding two channels to occupy 40MHz channel width In legacy 802 11 Wi Fi networks the typical channel width is 25MHz Thus there is a good chance that the 40MHz extended channel overlaps with some nearby legacy Wi Fi networks enough to cause interference It is highly recommended to use extension channel only in 5GHz frequency band due to the limited number of non overlapping channels available in 2 4GHz frequency band Greenfield Mode The Greenfield mode is used to improve efficiency in pure 802 11n networks by eliminating the unnecessary support for 802 11a b g devices When this mode is enabled only 802 11n clients can access the network Thus if you have legacy 802 11 clients that cannot access the network make sure that you have this mode disabled Short Guard Interval SGI Guard Interval defines the time between each district data transmissions It is used to ensure that the district transmissions in the network do not interfere with each other when there are propagation delays echoes and reflections Typically the guard interval should be two to four times the transmission delay spread In 802 11a g networks the long guard interval is 800 ns allowing 200 25 Chapter 4 User Interface Overview ns delay spread By shortening the guard interval it is possible to increase throughput of the
57. he AP List click on the MAC address of the access point and select Replace MAC and type in the MAC address of the new access point to the Replacing MAC field 19 Chapter 4 User Interface Overview Figure 4 7 When replacing access points remember to select the correct Vendor setting if not selected by default to ensure that the multi MAC access points are replaced correctly Replaced Access Points X 15 70 27 2d 78 gt 00 15 70 35 3e 78 Original MAC 00 15 70 27 2d 78 Replacing MAC 00 15 70 35 3e 78 Vendor Symbol el e Ifthe access point is not replaced by an identical AP Deselect the access point form the My Access Points using the Surveys list Note If the access point is replaced by another AP but not with an identical one you need to perform a new Survey within the coverage area of the new access point 4 5 6 1 Replacing Single MAC and Multi MAC Access Points When replacing access points distributing just one MAC address use the Generic one MAC replaced Vendor option In case of Multi MAC access points APs that are sending out one MAC per SSID ensure that the vendor has been selected correctly to apply the changes to the whole MAC range of the AP If your vendor has not been listed there are several options e Change the MAC addresses of the replaced AP one by one using the Generic one MAC Replaced vendor option e Use the Generic Up to 16 Virtual MACs Replaced option to re
58. he spot troubleshooting 75 rogue access points 80 Index 96 V visualization 53 legend 58 options 54 W walls customizing wall materials 34 drawing walls 34
59. i network and ESS will automatically plot the route on the map in addition to taking the Wi Fi measurements 7 1 4 1 Supported GPS Receivers A GPS receiver is required for the GPS survey feature to work The following GPS receivers are supported Bluetooh GPS devices that support NMEA USB GPS devices that support NMEA Garmin Protocol or Trimble TAIP Network connected GPS devices usually using TCP IP or UDP that supports TAIP or NMEA GPS devices connected to PC CARD that supports NMEA GPS devices that are connected to an RS 232 port that support NMEA Garmin or TAIP GPS Navigators are typically not supported even if they have a USB connection 7 1 4 2 Performing GPS Assisted Surveys To perform an outdoor survey using GPS 1 Connect a GPS receiver to your laptop Turn on the receiver make sure it is outputting data in one of the supported formats You will need to be outdoors for the GPS receiver to work properly 3 Inthe user interface check the Use GPS checkbox If you do not see the Use GPS checkbox in the top right corner of the user interface ensure that you have purchased ESS Professional version 4 If your GPS device has not been previously configured a GPS configuration dialog will pop up Typically the default settings are recommended When asked Do you want to use this device select Yes In the output selection ensure that the share my GPS between several applications option has been selected 5 ESS
60. ibited Your use of the Ekahau software described in this user manual and its documentation are governed by the terms set forth in your license agreement Your use of this Ekahau software contrary to the terms of this User Manual may void the warranty if any described in your license agreement Under no circumstances shall Ekahau be responsible for any loss of data or income or any special incidental punitive consequential or indirect damages howsoever caused You may not use any Ekahau software or hardware products in hazardous environments such as operation of nuclear facilities aircraft navigation or control environments containing high levels of dust or mines or in Life Critical Solutions unless you have advised Ekahau that they will be used in a hazardous environment or in a Life Critical Solution and Ekahau has had an opportunity to evaluate further whether and on what terms and conditions the software or hardware products may be licensed for your intended use The term Life Critical Solution means an application software package or hardware device whose functioning or malfunctioning may result directly or indirectly in physical injury or loss of human life Ekahau tags must always be used in compliance with the user environment and instructions con tained in the User Manual for the tags Copyright Ekahau Inc 2000 2010 All rights reserved iii Ekahau Site Survey Table of Contents AM HTHOGUCTIOMN 5 255820 c
61. in organizing and selecting the access points Tip You will see the signal strength of the strongest access point red low green high on the survey route while performing the survey If you do not see anything on the survey route while performing the survey check your network adapter and network adapter driver Chapter 7 Site Surveys Ensuring Suffi cient Coverage and Performance On Site Tip Keep the surveys fairly short to allow more flexibility for deleting and modifying the survey data An optimal survey length varies from a few rooms to a wing of a building Right click to end the survey every now and then and continue surveying by simply left clicking on the map again There is no need to manually create a new survey the current survey is ended with a right click and a new survey is created automatically when you continue surveying Warning Do not insert or remove network adapters or other devices during the survey 7 1 1 Configuring the Wi Fi Device for Passive Surveys To configure your Wi Fi device go to Device gt Devices or click the Network Adapter Settings icon From the Devices Window you can see the connected Wi Fi devices their status and device information To activate a different Wi Fi device select the adapter from the Devices list and click Activate To configure the signal scan settings of the selected Wi Fi adapter click Scanning Configuration This allows you to configure e Bands Select
62. in the project the Auto Planner will clear them from the project The auto planner will not take in account recorded survey data either Thus the Auto Planner cannot be used for network expansion In order to create an accurate network plan you will need to have the map s and scale s set You will also need to define the main walls of the building With this information ESS can calculate the Wi Fi signal propagation Once the environment has been defined as well as the desired cov erage area you can use the Auto Planner to create the network plan Alternatively you can create the network plan by yourself by placing and configuring simulated access points Both methods are explained in detail in the following chapters For more information on how to add maps and how to set scales please refer to chapter Setting the Map and Scale on page 29 6 1 1 Drawing and Editing Walls To define the environment you will have to draw walls To do this you will need to go to the Planning tab and select the Wall tool First you will need to select the wall material that most closely matches the wall you re going to draw To draw the walls simply keep left clicking on the map If you want to end the wall drawing just right click You can edit the walls that you have drawn by first selecting the Edit tool and left clicking the wall you want to edit You can edit multiple walls at the same time by holding down the Ctrl key while selecting the walls To ed
63. isualizations contain parameters that can optionally be set using Visualization Options Some visualization options are specific to the selected visualization whereas some are generic and apply to all the visualizations The Visualization Options allow you to set parameters concerning the visualization accuracy performance and overall appearance 55 Chapter 8 Analyzing the Wi Fi Coverage and Performance Figure 8 2 Some visualization options are generic some are visualization specific lili lt A Smooth Detailed Visualization Mode A U Rough Sketch Sketch Accurate Very Accurate Two Current One floor of floor floor Adapter Raw Measurements Show the Strongest signal at allchannels w Visualization Mode See the visualization in Smooth mode polygons or Detailed mode rectangles Extrapolation When Smooth Visualization Mode is selected adjust the level of extrapolation in meters feet Speed vs Accuracy Allows the visualizations to be refreshed more quickly at the expense of the accuracy or vise versa Signal Prediction Enable or disable all signal prediction Can be used to predict signal propagation through other floors Visualization specific options In this case for Signal Strength visualization 8 1 1 Visualization Mode The visualization heat maps are overlaid on the map using some amount of extrapolation because every inch of the facility can not be surveyed T
64. it the wall s simply drag and drop the wall s to its new location You can also change the wall material by right clicking the wall and selecting Change Wall Type Note By default the walls are drawn in 15 degree angles To draw walls in any angle hold down the Ctrl key while drawing walls 6 1 1 1 Customizing the Wall Materials If you want to customize the wall materials you will need working knowledge of XML or HTML and a plain text editor The wall materials are specified in the wallTypes xml file located in the 35 Chapter 6 Designing a Wi Fi Network conf folder under the product installation folder To edit the wall materials open the wallTypes xml file with a plain text editor and add remove or edit the wall materials The tags are explained in the table below Description An identifier for the wall material Needs to be unique for each material The name of the wall material displayed in the user interface width The width of the wall material absorption The absorption factor of the wall material in dB per meter color The color of the wall material represented as hex triplets For more information see http en wikipedia org wiki Web_colors When inserting new wall materials you will need to measure the signal strength both in front and behind the wall Subtract the former from the later and you will get the signal loss in dB Then measure the width of the wall and calculate the
65. l assignment 1 6 11 1 4 8 11 1 7 13 5 GHz Channel assignment U NII 1 36 48 v U NII 2 52 64 U NII Worldwide UNII 2E 100 140 1 Choose the network requirement type for your plan You can select from one of the predefined requirements or define your own requirement How to edit or define your own network requirements is explained in more details in chapter Defining Network Requirements on page 30 Note that the in Auto Planner only the Signal Strength and Number of APs requirements are taken in account 2 Select the Wi Fi band either 2 4 GHz or 5 GHz If you want to optimize your network for 5 GHz Wi Fi band the network will be more dense than for 2 4 GHz 3 Select the Access Point type you want to use in the network plan as well as Transmit power Antenna height and 802 11n characteristics 4 Define the Channel Assignment you want to use for your network plan You can select a predefined channel assignment just a single channel for example if you are using Meru Access Points or none meaning that you will assign the channels after the network plan has been deployed Chapter 6 Designing a Wi Fi Network 38 After you have defined the requirements for you network plan click the Create Plan button to deploy the network plan The plan will be deployed for all floors in the building where you have defined the coverage areas For separate floor maps that are not defined as a building the network plan needs
66. l measurements In cases where the interference is caused by a non Wi Fi device the interference issues may not be detected by the Wi Fi adapter Connectivity issues caused by non Wi Fi interference may include Occasional momentary connectivity cut offs Low voice quality Lower than expected network performance One or more channels completely unusable momentarily or permanently Other suspicious network issues Chapter 9 Troubleshooting Detecting 82 and Solving the Most Common Wi Fi Problems For the reasons mentioned above it is highly recommended to use a spectrum analyzer when deploying or troubleshooting a wireless network For Ekahau Site Survey users using spectrum analyzer is recommended in the following scenarios 1 Network planning Find out the interference sources before you deploy any access points by making spot checks with the spectrum analyzer around the facility Detecting the interfer ence issues in advance may affect the access point placement and configuration 2 Network verification Wi Fi site survey done with Ekahau Site Survey is always highly recommended when verifying the network This is typically done before the network production use starts and periodically for example every month During the verification check you may choose to perform spectrum analysis spot checks at selected locations to ensure that there are no significant interference sources present 3 Troubleshooting The most common pur
67. latency Excellent for investigating latency sensitive applications such as VoIP over WLAN e Detecting dropped packets Solve problems possibly caused by low coverage roaming issues and hardware defects e Visualize roaming areas Visualize which AP the Wi Fi adapter was connected to in different locations During the traditional passive survey signal readings from all the audible access points are measured and all the audible access points will be discovered and added to the AP list In addition to the access points in your network you are likely to discover other access points as well some may be audible from the neighboring office or even the neighboring building and some may be rogue access points placed in your environment without authorization To perform a Hybrid Survey you will need two Wi Fi network adapters Please visit http www ekahau com devices for the list of supported adapters The external network adapter such as Ekahau NIC 300 will be used to capture passive signal readings whereas the integrated Wi Fi adapter will be used for the end to end testing The integrated Wi Fi adapter has to be associated with a Wi Fi network and the network has to allow ICMP echo requests Ping To perform a Site Survey e Ensure that both of your wireless network adapters external amp integrated have been enabled in your laptop Check the Miniature Signal View to see if the external network adapter is suc cessfully scanning access
68. machinery in the area use the Ekahau DBx Spectrum Analyzer To optimize the channel separation change the channels from your access points to more suitable ones This can be done for measured as well as simulated access points When changing the channels the visualizations are updated appropriately using Always Refresh Automatically visu alization option is recommended Keep the Interference or SNR visualization active to see the impact of changing the channels Tip Go to Visualization Options to visualize the calculated co channel interference instead of measured noise when optimizing channel separation 9 2 3 Misconfigured SSIDs Sometimes in enterprise networks the SSID configuration may not be correct for all the access points In many cases some of the APs are missing a given SSID because of either human error or an incomplete configuration update by the Wi Fi controller The quickest way to resolve this is to check the number of SSIDs in your network To check the number of SSIDs use the Quick Select button in the AP list Select the desired SSID and the respective APs will be selected in the AP list You will see a per floor summary of how many access points are selected per floor Chapter 9 Troubleshooting Detecting 80 and Solving the Most Common Wi Fi Problems Alternatively to using Quick Select you can type the desired SSID to the Search box in the Access Point list Only the APs with that SSID will be displaye
69. mated network planning feature Please visit our website for the complete list of supported Wi Fi adatpers http www ekahau com devices The Ekahau Site Survey can conduct surveys in traditional passive mode as well as in active mode When these surveys are conducted simultaneously we call this as Hybrid Survey The Hybrid Survey requires two Wi Fi adapters to be used at the same time e An external Wi Fi adapter such as Ekahau NIC 300 Cardbus or NIC 300 USB for Passive Survey e Anintegrated Wi Fi adapter for end to end connectivy testing in Active Survey Warning Intel Centrino Laptops with the built in Wi Fi chipset can be used for passive site surveys RSSI measurement However since the measurement accuracy and network scanning speed is not optimal for passive site surveys it is recommended to use a third party network adapter such as Ekahau NIC 300 Cardbus or NIC 300 USB instead for the passive site survey measurements 2 2 How to Install 1 Make sure you have a supported network adapter inserted into your laptop visit http www ekahau com devices for a list of supported adapters Double click the executable file exe file to start installation Follow the on screen instructions given by the Installation Wizard to install ESS Follow the on screen instructions to install Wi Fi adapter driver and Ekahau Wireless Utility see below for details To D 2 2 1 Wi Fi Network Adapter Driver Update The external Wi Fi adap
70. monitors Ekahau recommends using Wi Spy DBX Spectrum Analyzer which can be purchased together with Ekahau Site Survey To purchase the the Wi Spy DBX Spectrum Analyzer please contact Ekahau Sales at sales ekahau com Packet Analyzers Protocol Analyzers solve issues that are not related to the Wi Fi signals but lie in the packet level You can figure out exactly what kind of packets are being sent and received and detect otherwise hard to detect problems such as issues related to AP Client configuration or incompatibility between the devices 11 Chapter 4 User Interface Overview 4 User Interface Overview Figure 4 1 User Interface Overview Example Project Hybrid File Edit View Site Device Help i CIE Survey esx SEC Show e for My Access Points X a a di d i Planning Survey ere e W I nus es Ee Access Points Ll surveys El Buicing mT z Showing 62 62 APSA Quick Select D Not placed on any Map 50 50 Office V Office 12 12 e 1 My cisco CEO B NS ki testissid2 wer wea2 pea P II GED 00 19 07 8 50 5 3 Be TEE IM Wim cisco CEO B S tk testissid2 wer wc Ei 7 IW 19 07 8c 5b a CH 00 1 07 8c 5 51 3 Office eege 1 MIMy Cisco Conf Room amp 0 ee IW Z My cisco Conf Room B kill testissid2 w wea A d Il 00 1f 9e 8d 18 6 3 din bffice Ka messes Ip Idi Wu cisco Engineering amp TAR testis
71. n Dual Rado 19 By D e D LE a LEA 110 Dual ado 12 L GE Pr Uy Edit Be ee une CA PR 44 De Edit Floor 1 GE ke ed p n Z My neric 11n Dual Radio 13 Lo On O CIE 52 de Edit Floor 1 GE to 3 e WZ My oer Lin Dual Radio D Dn kato ED aM CIE EU ee Ja My mem 11n Dual Radio 1 GD LE GE O I ta V My meric 11n Dual Radio 16 i 3 P D LE ED CI Ets res y Booe Seel 6 2 Creating the Network Plan Manually Using Simulated Access Points Before you can start working with simulated access points you need to define the environment which includes adding the necessary maps defining the scale and drawing walls How to draw walls is explained in more details in chapter Drawing and Editing Walls on page 34 After the environment has been defined you can start simulating your network to find out the optimal network configuration 39 Chapter 6 Designing a Wi Fi Network To start predicting the network performance place one or more simulated access points on the map 1 Select the Simulated Access Point Tool from the Planning Tab Choose the access point you want to simulate You can simulate either a pre defined AP or a customized AP with a particular antenna 3 Place the access point on the map with a left click If Always Refresh Automatically visualization
72. n properties Oo OT 8 amp w N 4 5 9 One Access Point Multiple MAC Addresses Many modern access points can be configured to broadcast several MAC addresses from a single physical access point An example of this feature is when an AP is configured for multiple SSIDs In order for Ekahau Site Survey to work properly in multi MAC environments the MAC addresses coming from a single AP should be joined together Ekahau Site Survey can join the MAC addresses automatically and alternatively manually To view all the joined MAC addresses one single AP broadcasts and their corresponding 802 11 technologies and encryption methods click on the MAC address button 23 Chapter 4 User Interface Overview Figure 4 11 This single physical access point broadcasts three different MAC addresses and SSIDs iv JV My ST entrance H s 8 Wenz q issid 11a 00 19 07 05 89 5c ofi3 WPA Split Replace MAC 1F my Ee a c ofis pli eplace ofi2 we ofiz 11a 00 19 07 05 89 5d ofi2 WPAZ Split Replace MAC 00 19 07 05 89 5c 3 q 11a 00 19 07 05 89 5e testissid2 WEP Split Replace MAC 4 5 9 1 Automatic and Manual Joining of Multi MAC Access Points Automatic Detection of Multi MAC Access Points By default Ekahau Site Survey automatically joins together all major Wi Fi vendors light weight enterprise access points working on a multi SSID This option can be removed from View gt Auto Detect Multi MAC Acce
73. nd select the SSID of your network If you are working on an existing project with My APs defined select Identify My Access Points by Access Point List If you do not choose either all of the APs will be considered to belong to your network which may lead to overly optimistic results Figure 9 2 Quick on spot troubleshooting without a map Live Network Status Signals Requirements 802 11n Details Ping Identify My Access Points by 5310 Access Point List Requirement Basic Connectivity Criteria fal Signal strength at least I Signal to noise ratio at least dB Data rate at least Mbps a Number of access points at least when signal strength 85 dBm E Ping round trip time at most I Packet loss at most Conditions Network Load 5 Adapter Raw Measurements Connection Details Associated Access Point None Ping Host None Note To be able to compare Ping Round Trip Time and Packet Loss measurements the Ping tool must be started To do this go to the Ping tab and click the Start button Remember to make sure you have valid Network Host configured 9 1 3 802 11n Details The 802 11n includes several improvements that offer higher throughput range reliability and bandwidth than legacy 802 11 standards However sometimes these 802 11n settings may cause 77 Chapter 9 Troubleshooting Detecting and Solving the Most Common Wi Fi Problems
74. needs to be able to transform the GPS coordinates into map coordinates For this you will need to place three GPS Reference Points on the map To place the Reference Points use the GPS Reference Point Tool on the Survey tab Click on the map to place a GPS Reference Point When placing the Reference Points you will need to either know the latitude longitude coordinates for the Reference Point location or alternatively be physically located there with your GPS receiver turned on in which case the coordinates will be taken from the GPS receiver Repeat until you have three reference points on the map 6 Now you should see the blue circle on the map indicating your current location If it is not check if you see an exclamation mark next to the Use GPS button If so move your mouse over the exclamation mark to see the error 7 Inthe Survey tab click the GPS Record button to start the survey 8 Drive or walk throughout the outdoor area you wish to survey Chapter 7 Site Surveys Ensuring Suffi 48 cient Coverage and Performance On Site 9 End the survey by clicking the GPS record button again Note If the GPS device is not detected re try the GPS device detection If the GPS device is not detected after several retries try using the advanced options to adjust the GPS configuration to your needs Note To ensure measurement accuracy take the reference points at least 300 meters 1000 feet apart from one another and don t place
75. ny values The spacing controls how many values each color represents Colors Select the desired color range from the drop down menu Requirements Since the colors for these visualizations are fixed and the results of Network Health and Network Issues visualizations depend on the Requirements clicking the Legend when these visualizations are enabled allows you to edit the Requirements 59 Chapter 8 Analyzing the Wi Fi Coverage and Performance Figure 8 9 Adjusting the legend has a significant impact inn the visualizations 80 20 dBm Open Spacing 5 LL cn DI Je Show Contours open 50 40 dem V Open el 1 EE orl Show Contours Not all options are customizable for all visualizations The table below explains the visualization default values and adjustment options Visualization Legend Adjustment Options Default Values Data Rate Contours On Off From 1Mbps up to 600Mbps Interference Value Range Spacing Colors Contours On Off 100dBm through 50 dBm or More Network Health Requirements Pass Fail Network Isseus Requirements Pass Fail Number of APs Value Range Spacing Colors Contours On Off 1 through 10 or more APs Signal Strength Value Range Spacing Colors Contours On Off 80dBm through 20 dBm or more Signal to Noise Ratio Value Range Spacing Colors Contours On Off OdB through 50 dB or more Strongest Access Contours On Off MAC addresses of the AP
76. o Planner Ekahau Site Survey Pro only Use the ESS Auto Planner to create a network plan for you automatically The Auto Planner automatically simulate access point locations and configurations without going on site ESS can visualize predicted coverage and performance based on your requirements In addition you can manually adjust the AP locations and configurations or just manually create the complete network plan with simulated access points if needed Perform Pre Deployment Site Survey The goal of the pre deployment survey is to verify the accuracy of the network plan prior to purchasing and installing all the equipment By performing pre deployment site surveys you can be more confident of the number of APs and that their installation locations are optimal During the pre deployment survey you will also find all the third party or rogue access points that may be radiating to the facility When on site power up an access point in one of the location defined in the Network Plan phase Perform a site survey in the coverage area of the AP Use the Freeze Access Point feature and move the access point to the next location Repeat this process for all the APs planned in the network design The end results is a site survey of the whole facility without having to purchase all the necessary network equipment Fine tune the Network Design If the network meets your requirements you can directly proceed to the next step If the network does not meet
77. o adjust the amount of extrapolation click the Options button next to the visualization selection There are two Visualization Modes Detailed The extrapolation is fixed The Detailed Mode provides low extrapolation and accurate results Does not allow adjusting the amount of extrapolation of data Use Detailed mode when in depth analysis is needed Smooth Adjustable amount of detail as the user can set the extrapolation in feet or meters Chapter 8 Analyzing the Wi Fi Coverage 56 and Performance Figure 8 3 Visualization modes and extrapolation slider Smooth Detailed Visualization Mode WA f il il H H H H 1 E m 2 4 6 8 10 Figure 8 4 Detailed and Smooth visualization modes When designing large Projects with lots of walls and simulated access points you may want to get visualizations updated quickly to find out the optimal number of access points their locations and configurations as quickly as possible At this point the accuracy of the visualization may not be essential to find out the ball park locations and configurations of access points In situations like these you can increase the visualization speed by adjusting the slider above the Signal Prediction options The Rough Sketch will provide the fastest response with the least amount of detail whereas the Very Accurate setting will provide most detail sacrificing some of the response time Figure 8 5 Visualization speed vs accuracy slider I I I
78. o set the length unit between feet and meters go to File gt Preferences Note It is highly important to set the correct scale Otherwise some visualizations and simulations may not be shown correctly 5 2 1 Changing the Map Image In some cases the underlying map image used needs to be changed without losing all the infro mation about the surveys or about the predictive design To change the underlying map image go to Site gt Change Map Image Note The replacing map image needs to be of the same size and scale as the original map image 5 3 Defining Network Requirements Each Wi Fi installation is different Whether the network is used for e mails voice over Wi Fi or location tracking the application determines what kind of coverage and performance is required from the network Ekahau Site Survey allows you to set the requirements for the network and see 31 Chapter 5 Starting to work with Ekahau Site Survey if the requirements are met with a single view In Ekahau Site Survey the following criteria are included in a Requirement Signal strength minimum signal strength for the strongest AP Signal to noise ratio minimum SNR given a minimum allowed data rate in the network Data rate minimum Number of audible APs the minimum number of audible APs given a minimum signal strength Ping Round Trip Time minimum round trip time for ping e Packet Loss packet loss calculated from the last 10 pa
79. ociated access point 70 automated network planning 33 B backward compatibility 2 building view 40 D data rate 60 E exporting images 85 floor alignment points 41 freezing access points 48 G gps site surveys 47 l interference 61 L license evaluation license limitations 8 live network status 75 802 11n details 76 ping 77 requirements 75 signals 75 location tracking 89 M map duplicating maps with similar layouts 35 map view 11 map scrolling 44 network issues 63 Network Load 61 network planning finding optimal AP layout and configuration 39 multi floor 40 network requirements 30 visualizing on the map 62 number of APs 64 P packet loss 69 ping 68 printing images 85 professional version 2 R real time location tracking system 89 reporting 85 round trip time 68 rtis 89 S setting scale 29 signal strength 65 signal to noise ratio 66 site surveys active survey 43 gps assisted outdoor surveys 47 hybrid survey 43 passive survey 43 post deployment 48 pre deployment freeze access point 48 supported gps receivers 47 survey inspector 50 standard version 2 strongest AP 68 survey surveys list 26 survey inspector 50 T troubleshooting 78 connectivity and latency issues 80 defective access points 80 examples 78 high interference 79 low coverage 78 misconfigured 802 11n settings 80 misconfigured SSID 79 on the map 63 on t
80. oints either delete the search field or click on the X button next to the search field The following search options are available Example Search Terms Description 00 17 0f 00 17 0f 12 ab a1 Search by a partial or complete MAC address 17 Chapter 4 User Interface Overview Example Search Terms Description Nortel Siemens Simulated AP 4 Search by the name of the AP The name is defaulted to the vendor with measured access points guest tsunami Search by the SSID the AP is on 802 11a 802 11b Search by the 802 11 standard the AP supports my Search only the APs selected as My other Search only the APs not selected as My 4 5 3 Visualizing Selected Access Points You can limit the access points to be included in the heat map visualizations from the drop down menu next to the Visualization Selection menu e Showing the visualization for All Access Points displays the visualization heat map using the information from all the access points For example if you want to see the total number of access points on a given map select Show Number of APs for All Access Points e f My Access Points is selected the visualizations will only be shown using the data of the access points checked as My from the AP List For example if you want to see the coverage area of your network select Show Signal Strength for My Access Points Selecting All Access Points instead of My Access Points would include neighboring and
81. on the map thereafter Figure 4 8 Channel selection view e My 3com E b I mawell net wer mawell wlan wea lope eres 1 3 r H SE f 3 ZE r CO My Apple m F5 ke irForcel woa LU 2 2m us A 00 24 36 a6 a5 c3 1 in Bien an 44 Cm eet 5 A aruba sg o A i jl e a 1e c4 c5 50 1 ffice 56 OnE H bk TechnoWLAN open 2 1 Tu BR 3 dn bffice II ess Iw A My Proxim amp L yota wen ESS r i hel 00 20 a6 49 bc 2b 1 bffice Il ch 1 802 11g Band Green 2 802 11n Band channel selection Purple 3 802 11a Band Orange 4 802 11b Band Blue 21 Chapter 4 User Interface Overview Figure 4 9 Working with access points e Example Project Pro_X esx Ekahau Site Survey di ALALA Pme ui DP iT Ces ie ge ES E Buildino Show Signal Strength for Selected Access Points Sfr Options en aE La ge 4 e MV My Cisco a Aa wl Pl oFi2 wen ofi3 wea testissid2 we Ben 00 1F 9e 8d 18 6c 3 iin Extension Sarena 104 V My cisco entrance amp Short Guard Interval SGI On P woaz ofi3 wea testissid2 we Greenfield Mode off GW our Ses Maximum Spatial Streams 2 IS woaz D I won bestissid2 we 11g 00 19 07 05 89 51 testissid2 WEP Split Replace MAC F My cisco ofiz wens ofig 119 00 19 0
82. option is enabled you should instantly see a visualization for the placed access point 4 Click either the rectangle on the right hand side of the AP or the Edit button on the AP List to edit the antenna band channel and transmission power for the simulated access point If you are simulating a 802 11n AP you can also edit the Extension channel of Supported Spatial Streams Greenfield and Short Guard Interval properties 5 Repeat steps 2 4 to place more access points Figure 6 6 Editing simulated access point Fee IN My Eustom T l d n r DI Edit al Lut baak nb _furnitul sl 25 mW 2 4m 0 0 L Generic 2 2dBi Omni P Close 1 Click to edit a simulated access point You can move a simulated access point by simply dragging them on the map when the Edit tool is selected hold down the left mouse button while moving the AP To delete a simulated access point right click on the access point on the map and select delete After placing the APs on the map the properties of the APs can be changed using the AP list Refer to the chapter User Interface Overview to read more about changing the properties of the access points that have already been placed 6 2 1 Optimizing Access Point Layout and Configuration There are several ways to find the optimal number placement and configuration for your APs Here s one recommended method 1 Setthe maps scale walls and optionally b
83. or each survey Simply click the note icon to edit the survey notes 4 7 The Building View The building view is only necessary when creating three dimensional network plans For information on how to use the Building View see chapter Designing a Wi Fi Network 4 8 Menus Use the menus to access file operations site specific operations Zooming and more Selection Description New Create a new Project File Open Open an existing Project File Save Save the Project using the existing file name File Save As Save the Project using a different file name Export as XML Export the Project as an XML file 27 Chapter 4 User Interface Overview Menu Selection Description File Export Image Export the currently displayed map image and visualization File Print Image Print the currently displayed map image and visualization File Report Generate a report of the network File Merge Merge another Project with the cur rent Project File Preferences Change the product preferences such as the length unit File Exit Exit the program Edit Undo Undo the previous action Edit Redo Redo the undone action View Zoom In Zoom in to see an area in more detail View Zoom Out Zoom out to see a wider area of the map at once View Zoom to Fit Fit the map into the window View Zoom 1 1 Zoom to see the map in its actual pixel size View Surveys
84. ork adapter The integrated network adapter has to be connected to the Wi Fi network to be able to measure the network performance To connect use Windows Wi Fi Management tool By default Ekahau Site Survey pings the Default Gateway You can change the Ping Host by clicking the Miniature Ping View icon To ensure the defined Ping Host replies to ping click the Start button It is not necessary to leave the Ping enabled as ESS will enable it automatically when you start recording Hybrid Surveys In Hybrid Survey mode the traditional signal measurement is always made with the external Wi Fi adapter To configure the external Wi Fi adapter please see chapter Performing Site Sur veys on page 43 7 1 3 Moving and Deleting Survey Points After the survey it may be necessary to move or delete Survey points perhaps because the location was not clicked properly in some locations To move or delete Survey Points right click 47 Chapter 7 Site Surveys Ensuring Suffi cient Coverage and Performance On Site on a Survey point and select Move Survey Point or Delete Survey Point When you delete a Survey point from a survey the Survey will be split into two 7 1 4 GPS Assisted Outdoor Site Surveys ESS allows you to use a GPS handheld to perform site surveys outdoors without having to click on the map For example by connecting a GPS receiver to your Wi Fi enabled laptop you can simply drive around the coverage area of a municipal Wi F
85. ou are connected to the Internet when starting the software for the first time Ensure you have the license for the correct software and for the correct version Ensure the the same network adapter is in the computer which was registered when the product was started for the first time Ensure the network adapter is connected and enabled when inserting the license Ensure the license you have has not been registered previously by anyone else The issue may be in the firewall or proxy Try activating the license from another location can t see any signals in the Miniature Signal View In other words the network adapter is not scanning Ensure your Wi Fi adapter is enabled Ensure you have a supported Wi Fi adapter See www ekahau com devices for details Ensure you have the correct network adapter driver installed If using an external Wi Fi adapter install the latest adapters from Start gt Programs gt Ekahau gt Ekahau Site Survey gt WLAN Adapter Driver Installer If using the integrated Wi Fi in Intel Centrino use the latest available driver from Intel Exit Ekahau Site Survey remove and re insert or disable and enabled the wireless network adapter then re start Ekahau Site Survey If the problem persists contact support ekahau com Chapter 12 Troubleshooting 92 93 Chapter 13 Additional Information 13 Additional Information 13 1 Meru Virtual Cell The Meru Networks access points can operate in Virtual Cell mode
86. place all the MAC addresses automatically This option should be used if the last hex number 4 bits of the MAC address changes between different SSIDs e Use the Generic Up to 64 Virtual MACs Replaced option to replace all the MAC addresses automatically This option should be used if the last 6 bits of the MAC address change between different SSIDs 4 5 7 Adjusting the Properties of Measured Access Points By deafult the names of the measured access points are defaulted as the AP manufacturers To change the name edit the text box Edit the AP notes by clicking on the note icon This information may include AP mounting inform ation name of the person responsible for installation cabling information and so on An empty Chapter 4 User Interface Overview 20 paper is displayed if there are no notes for the AP and a paper with text will be displayed if notes are written for the AP In some cases the surveyed network shows high interference due to inoptimal channel selections of the APs Ekahau Site Survey allows you to simulate how interference and thus network per formance would change if the AP channels were changed To simulate a channel change for a measured AP simply click on the 802 11 channel selection drop down menu and change the channel 802 11b band channels are presented in blue 802 11g channels in green 802 11a channels in orange and 802 11n channels in purple The impact of the channel change will be visualized
87. port followed by the extension rtf or pdf Paper The paper type of the report Document Format Choose Adobe PDF or easily customizable and MS Word compatible RTF Report title The title of the report Cover page image Choose an Image file such as a company logo to be included in the front page of the report Chapter 10 Reporting Exporting and Figure 10 1 Generating reports Ekahau Site Report V Office V Overall Network health vV Network Health v Network Issues Coverage and Performance v Data Rate v Number of APs V Signal Strength v Signal To Noise Ratio Interference Noise Strongest Access Point V Connectivity v Associated Access Point v Ping Packet Loss v Ping Round Trip Time Paper Document Format At RIF 7 LETTER PDF 7 43 Folder C Documents and Settings mikko lauronen My Documents File Example_Project Report Renameable title of the report Customizable cover page image Click to change the image Select the maps that should be included in the report Select the visualizations and Access Points that should be included in the report Choose the paper type and document format Type the name of the report file and select where the report should be saved Oo O1 8 amp D The report includes Access point configurations as a table Access point
88. pose for a spectrum analyzer is troubleshooting Whenever Wi Fi issues arise that are not solvable with a Wi Fi site survey Ekahau recommends using a spectrum analyzer Typically collecting a minute or two of data with a spectrum analyzer will reveal the underlying issue 9 3 1 Using Wi Spy DBX Spectrum Analyzer Firstly you will need to insert the Wi Spy DBx spectrum analyzer device to your computer and install the appropriate software The spectrum analysis software is called Chanalyzer Consult the Wi Spy DBx documentation for details on the installation To start spectrum analysis click the Spectrum Analysis button This will start the Chanalyzer software assuming that it has been installed on your computer Figure 9 6 Wi Spy Chanalyzer software quick launch Ve julia ele Cuse cps It is important to note taking measurements using a spectrum analyzer requires a method different from Wi Fi site surveys Whereas during Wi Fi site surveys it is acceptable to fairly quickly walk around the facility taking measurements spectrum analysis is something done in selected locations only spending more time for example one minute in a given location This is because a spectrum analyzer typically needs more time to collect meaningful data Prior to spectrum analysis you will need to find out whether the problems are on the 2 4 or 5GHz frequency space For example if the problems are found with 802 11g VoIP phones but not with laptops opera
89. re marked as My APs If you are visual izing with Selected Access Points view the APs that are currently Selected will work as sources of noise 61 Chapter 8 Analyzing the Wi Fi Coverage and Performance Figure 8 10 Data Rate visualization Floor 1 H AAlignment Point 1 _ F _ 5 5 No data transfer possible High data rate 54Mbps Low data rate Red 1Mbps lt gt Green 54Mbps e ON 8 3 2 Interference Noise If two access points are close to each other on nearby channels co channel interference is gen erated In many cases some amount of co channel interference is inevitable but excessive co channel interference will result in degraded performance in the wireless network The Interference visualization will display the amount of estimated co channel interference based on the signal strengths and channels of the access points Interference is affected by e Network Load Network Load is the estimated amount of traffic in your network The more Network Load the more channel interference is generated With low network usage the load is typically between 1 and 10 The network load of a typical enterprise Wi Fi network is between 10 and 20 percent If the network is extremely crowded the network loads may reach 30 or even 40 percent Chapter 8 Analyzing the Wi Fi Coverage 62 and Performance e Adapter also has an impact to interference since different adapters have slightly diff
90. rk 9 2 6 Misconfigured 802 11n settings The 802 11n includes several improvements that offer higher throughput range reliability and bandwidth than legacy 802 11 standards However sometimes these 802 11n settings may cause interference or other problems with legacy 802 11 networks and devices 9 2 7 Connectivity and Latency Issues After performing Hybrid Surveys it s easy to find connectivity and latency issues Use the Ping Packet Loss and Ping Round Trip Time visualizations to identify such issues The issues may be caused for example by high interference excessive network traffic or bad configurations in the APs or the wired network 81 Chapter 9 Troubleshooting Detecting and Solving the Most Common Wi Fi Problems 9 3 Troubleshooting Non Wi Fi Interference Using Spec trum Analyzer Wi Fi devices operate on license free frequency bands This means that these frequency bands are not limited to Wi Fi devices other than Wi Fi also operate on the same frequencies Some examples of non Wi Fi devices that may operate on Wi Fi frequencies are Microwave ovens Wireless video cameras Wireless headsets Cordless phones Zigbee IEEE 802 15 4 Figure 9 5 Interference caused by a wirelesss video camera on 2 4 GHz frequency as seen by a spectrum analyzer Le 43 0 dBm 1 Interference intensity in dBm 2 Interference on Wi Fi channels 1 3 3 Wi Fi channels Ekahau Site Survey uses the Wi Fi adapter to take signa
91. roduct for network design and site surveys the limitations are e Network planning is time limited to 15 minutes e Surveying is limited to 15 minutes e Opening except the Example Project merging reporting and saving are disabled Chapter 3 Designing Deploying and Troubleshooting Wi Fi Networks 3 Designing Deploying and Troubleshooting Wi Fi Networks Below is shown a typical example on how high quality wireless networks are designed deployed and managed using Ekahau Site Survey Network deployment strategies may vary but most of the network deployments include several of the following steps 1 Define the Requirements Determine what applications and the anticipated number of users the network will host Determine service areas network security policies end user devices funding and scheduling From these define the network coverage performance compatibility and security requirements Conduct a visual site inspection In Ekahau Site Survey you define the network requirements by selecting the type of application used in the network such as data or voice over IP You can also create your own custom network requirements The requirements can be edited from Site gt Edit Requirements Once the requirements for your network have been defined you can easily compare the net work simulated or measured against the requirements using the Network Health visualization Automatically Create the Network Plan with Aut
92. rsion as well as with Ekahau Site Survey 2 2 version e Older ESS 4 x versions are not able to open ESS 5 0 project files e RTLS Compatibility Only Ekahau RTLS Controller ERC 5 0 can open ESS 5 0 project files None of the previous Ekahau Positioning Engine versions can open ESS 5 0 project files If you have an older EPE version and want to use the latest ESS you will need to update the EPE 1 4 2 License compatibility with previous Ekahau Site Survey versions Ekahau Site Survey 5 0 and later versions require a new license that is not compatible with Ekahau Site Survey 4 x versions If you have a valid Ekahau Site Survey Support package but you have Chapter 1 Introduction not received a new Ekahau Site Survey 5 0 license please contact Ekahau Support at support eka hau com or your Ekahau Sales representative Chapter 1 Introduction 5 Chapter 2 Installation 2 Installation 2 1 System Requirements and Software Limitations The following hardware and operating system are required to run the program Windows 7 64 bit amp 32 bit Vista 64 bit amp 32 bit or XP 32 bit only Operating System 1 GB RAM 2GB RAM recommended for large projects 1GB free hard disk space A supported Wi Fi adapter visit http Awww ekahau com devices Laptop computer required for recording surveys a desktop computer is sufficient planning and analysis e Screen resolution of 1024 x 768 or higher 32 bit color quality recommended
93. rt menu again and select Uninstallation 2 2 2 Upgrading the Ekahau Site Survey License The first time you start the software you will be prompted for a license key If you are evaluating the software you do not need a license If you have purchased the product you should have received the license key via e mail When prompted type in the license key as well as your name and company The software license will be tied to a selected network adapter When starting the software you will need to select the network adapter you wish to pair the license key with The network adapter does not need to be a Wi Fi adapter you can pair the license with a fixed Ethernet adapter also the network adapter just needs to be present when the software is started The adapter you select at this point does not limit what Wi Fi cards can be used with the tool After inserting the license the tool will register the MAC address and the license key on line For this an internet connection is required when starting the software for the first time If you wish to continue in the evaluation mode and upgrade the license later go to Help gt About and select Upgrade License Note After registering the software the network adapter will be checked every time the software is started If the network adapter is removed or disabled the software will not start Chapter 2 Installation 8 The evaluation license has several limitations For evaluating the p
94. s Point Ping Round Trip Contours On Off 0 0 ms throught 1000 0 ms Time Ping Packet Loss Value Range Spacing Colors Contours On Off 0 through 100 Associated Access Contours On Off Automatic Point 802 11n Channel Contours On Off On Off Bonding Chapter 8 Analyzing the Wi Fi Coverage 60 and Performance 8 3 Visualization Views 8 3 1 Data Rate Data Rate is the is the speed at which the client device and the access point are communicating at The higher the data rate the more data is expected to be transferred between the client device and the access point in a period of time In 802 11 the advertised data rate is the theoretical maximum at which the devices are able to communicate However the net data throughput between two devices is typically less than half of the advertised data rate In ESS the data rate is calculated using the following Visualization Options as parameters e Network Load affects the data rate The higher the network load the more interference The more interference the lower the SNR and the lower the SNR the lower the data rate e Different Adapters have different receiver sensitivity capabilities and even support different 802 11 standards Thus using different adapters may have a significant impact to the data rate For example an 802 11b adapter can only communicate at a maximum of 11Mbps Note The data rate is calculated only for access points that a
95. s point a Ded ee I Floor 1 ARR EEE Sp rs GER D Ol ET 109 D Floor 2 1 1 D Floor 9 Survey 5 5 Cisco 4P1250 ANT5140 5GHz 11n Extension Channel 44 Greenfield Supported Spatial Streams fe v JV Short Guard Interval Chapter 4 User Interface Overview 26 4 6 The Surveys List Figure 4 16 Surveys list File Edit View Site Device Help Lea al sata Access Points H Surveys g Building Name Sen Map JL Me Survey in the east wing Floor 9 Survey OO O B Show Signal S ke E ene r Floor 9 Surves Every time you stop a survey by right clicking the mouse when surveying a Survey will be added to the Surveys list The Surveys list will show the name of the survey as well as the map the survey was performed on Floor 9 Survey 4 long survey inthe hallways 3 Floor 9 Survey Floor 9 Survey Floor 9 Survey Using the Surveys list you can select and de select the surveys If you want to visualize the network coverage and performance for specific surveys only such as only the surveys that have been performed recently simply de select the other surveys To select de select and delete multiple Surveys simply select more than one Survey right click on one of the surveys and select the desired action from the context menu Similarly to access point notes you can also write down notes f
96. s to ensure flawless operation Design for additional coverage or performance using the network planning features by simply opening the surveyed project file and adding simulated access points on the surveyed data 3 1 Ekahau Site Survey and Other Wi Fi Tools Ekahau Site Survey is a comprehensive tool that assists during the entire life cycle of a Wi Fi network However there are other tools available that are complementary and worth considering also Wi Fi Management softwares are designed to assist in the set up monitoring and manage ment of the network While Wi Fi controllers assist you in setting up the network configurations and monitoring the network on a high level site survey tools can provide more detailed information not visible to the Wi Fi controller Some scenarios that ESS can solve are Broken APs unsuccessful configuration updates to the APs rogue APs beyond the reach of your Wi Fi APs and coverage holes not detected by your APs In addition Ekahau Site Survey provides state of the art tools for network planning and expansion whereas some controllers may provide basic tools for ballpark type network planning Spectrum Analyzers help understand the radio frequency in more detail Whereas Ekahau Site Survey provides a view to the audible Wi Fi signals a spectrum analyzer shows the non Wi Fi interference It allows you to solve problems caused by such interfering devices as microwave ovens wireless video cameras and baby
97. ser Interface Overview The Planning Tab These tools are needed when working with a predictive design of a Wi Fi network Icon Name Description R Edit Edit Items on the Map Allows you to perform various functions to items on the map such as move and delete Scale Indicate Scale Indicate the scale of the map Can also be used as a distance measurement tool Simulated Place a Simulated Access Point on the Map Optionally select the Access Point properties of the AP prior to placing it Wi oi E E Wall Floor Alignment Place a Floor Alignment Point Aligns the floor with the neighboring floors Only needed when the 3D planner is used Draw Walls Only needed when the 3D planner is used Coverage Area Indicate Coverage Areas for Auto Planner Draw areas where you want Auto Planner to provide Wi Fi coverage and to place access points Auto Planner Open Auto Planner Click to open the Auto Planner configuration dialog and configure the Auto Planner The Survey Tab Survey These tools are needed when performing site surveys or troubleshooting the network Icon Name Description N Edit Edit items on the map Allows you to perform various functions to items on the map such as move and delete mm Scale Indicate Scale Indicate the scale of the map Can also be used as a distance measurement tool C2 Record Survey Perform Surveys Record signal measurements around the
98. sid2 we waz Hess R E n 1 00 1f 9e 8d 1c 61 3 Lin bffie re 11 p ZIM eer Engineering amp An testissid2 ue weg AE 2 LL 1 GE orzeggiegc un l e testissid2 we wea 111 D or PHONE CONDOM Access Point Survey list and Building view tabs Toolbar Visualizations Selections Miniature Ping view The digits on the top left are the last digits of the associated AP MAC address Miniature Signal view Spectrum analyzer quick launch Planning and Survey tabs Map view 4 1 Map View The map view is the most commonly used view in ESS Use the map view to Create network plans Perform site surveys Place and move access points Analyze and optimize the network coverage and performance Zooming the map is done using the zooming buttons in the toolbar using the mouse wheel or from the View menu You can also zoom by right clicking on the map when using the Edit Simulated Access Point and Wall tools Chapter 4 User Interface Overview 12 Figure 4 2 ESS map view Select and add map Drawing walls is not required if network planning is not used An 802 11g access point on channel 1 Survey route Arrows indicate survey direction Visualization Legend Click to adjust visualization value range and color scheme a io 4 2 Planning and Survey Tabs Use the Planning and Survey tabs to access the most commonly used tools 13 Chapter 4 U
99. ss Points You can also adjust the auto detection to only automatically join only selected brands of access points Manual Joining of MAC Addresses If the access points are not joined together automatically and are broadcasting several MAC addresses they can be joined manually 1 Select all the access points from the AP List that are actually a single access point 2 Select Actions gt Join Selected Access Points The two MAC addresses are now treated as a single access point Figure 4 12 Joining multi MAC access points manually e Ve Showing 54 54 Quick Select Actions R es aa k Re Iv JV My ES bigconfroom Fa Select All ofiz wena ofi3 wea testissid2 wee seed Hone Z Been 00 1f 9e 8d 18 61 3 tin i WO pp Bum Freeze Selected Access Points Edit Selected Simulated Access Points 10 My cisco bigconfroom Se ears EE Place Selected Access Points Automatically wy i ofi2 wonz ofis wea testissid2 wee Re 00 1f 9e 8d 18 6c 3 Lun nl i istbh nt pp bur 4 5 9 2 Splitting Falsely Joined Access Points There might be cases where Ekahau Site Survey falsely detects and joins access points as Multi MAC AP This might be the case for example with some legacy Cisco access points These falsely joined APs can be recognized from oversized signal coverage and from multiple distributed high signal strength peaks Chapter 4 User Interface Overview 24 To split an falsely joined a
100. sualize and analyze each location where the AP was placed If Freeze AP is not used you would simply see one AP detected and be able to visualize one huge coverage area Moreover it allows simulating a complete network in terms of overlap channel interference and data rate by using just one or a few access points To use Freeze AP Turn on the access point Perform a survey within the coverage area of the access point Stop surveying and unplug off the access point From the user interface select the access point and only that access point and select Actions gt Freeze Selected Access Points PON gt 49 Chapter 7 Site Surveys Ensuring Suffi cient Coverage and Performance On Site 5 Move the access point to the next location 6 Repeat steps 2 4 until all the necessary AP locations have been surveyed Note Although the previous instructions are for one access points several access points can also be used in the pre deployment survey and several access points can be frozen at once 7 3 Placing Access Points on the Map Ekahau Site Survey is able to place access points on the map automatically after the survey These are estimated locations You can disable the feature by unchecking the Auto Place APs checkbox during the survey If you have disabled the Automatic Placement you can manually force the automatic on demand placement of access points from Site gt Place Access Points Automatically The AP locations gu
101. ter driver needs to be updated in order to collect signal measurements The Wi Fi adapter driver will be updated automatically during the installation Make sure you have a supported Wi Fi adapter inserted when installing the product Skip driver installation if you do not wish to conduct Surveys or do not have a supported external wireless network adapter available at the time of the installation Chapter 2 Installation If you did not have a supported adapter at the time of the installation or if you chose to install the driver later for some other reason you can install the WLAN adapter driver and the wireless connection utility later by selecting the Install Cardbus USB Wi Fi Adapter Driver from the program folder in the Start menu Note It is also highly recommended to update the integrated Wi Fi adapter s driver if used for either passive survey or active survey For Windows XP the driver installation will also install the Ekahau Wireless Utility for managing the wireless connectivity The Wireless Utility can be started from the Start menu For more information please use the help features in the Wireless Utility user interface You may also choose to only install the driver and skip the Wireless Utility installation if you want to continue using a third party wireless utility If you wish to stop using the program and thus also the customized network adapter driver simply run the Wi Fi Adapter Driver Installer from the Sta
102. ter was associated with 2 Each roaming area is represented with different colors 3 Click to enable or disable Contours 8 3 12 802 11n Channel Bonding To better visualize your 802 11n network characteristics use the 802 11n Channel Bonding visu alization to see in which areas Channel Bonding is used to achieve higher bandwidth and to recognize the area where it could be enabled Chapter 8 Analyzing the Wi Fi Coverage 72 and Performance Figure 8 21 802 11n Channel Bonding visualization Alignment Point P Ke Alignment Point W Show Contours 1 802 11n Channel Bonding enabled 2 802 11n Channel Bonding disabled 3 Click to enable or disable visualization Contours 8 4 Different Survey Methods vs Visualizations Not all visualizations are available with just passive surveys or when working with simulated access points The visualizations that require Hybrid Surveys do not work for simulated data The Network Health and Network Issues visualizations provide all the functionality only when using Hybrid Surveys The below table outlines which survey methods affect on each visualization Visualization Passive Survey Tradi Hybrid Survey End to Simulation tional Signal Reading end Connectivity Test mg Data Rata X X X Interference Noise X X X Network Health X X X Network Issues X X X Number of Access Points X X X 73 Chapter 8 Analyzing the Wi Fi Coverage and Performance
103. the requirements fine tune the configuration using the simulation capabilities ESS in until it does Deploy the Network Infrastructure Based on the network plan and the pre deployment site surveys deploy the wireless network infrastructure Use ESS to store notes about the installation Conduct a verification survey Verify the network coverage and performance by conducting a site survey throughout the entire site Analyze and fine tune to finalize the network design Analyze the network coverage and performance If the verification survey reveals that the network still does not meet the network requirements fine tune and re survey until it does Use the simulation and optimization features of ESS to perfect the network Create documentation Ekahau Site Survey Pro only Use the reporting feature to create complete documentation of the network installation cover age and performance with the click of a button Troubleshooting Monitoring Maintenance Expansion Chapter 3 Designing Deploying and 10 Troubleshooting Wi Fi Networks Problems do occur that cannot be seen from the Wi Fi Controller but have to be investigated on the client side Use Ekahau Site Survey in combination with your Wi Fi Controller to keep your wireless network up and running Use the Live Network Status feature to quickly detect and solve basic Wi Fi issues such as finding defective and or missconfigured Wi Fi Access Points Conduct periodic site survey
104. ting My Access Points 1 18 4 5 5 Renaming Access Points cis ca st aceetei cei iaceasuncis SEENEN edd ener 18 4 5 6 Replacing Access e esrin eee unes ie lin eE 18 4 5 6 1 Replacing Single MAC and Multi MAC Access Points 19 4 5 7 Adjusting the Properties of Measured Access Points nsseeeeeeee eeren 19 4 5 8 Adjusting the Properties of Simulated Access Points ssseeeeeeeeeeeenn 21 4 5 9 One Access Point Multiple MAC Addresses tt 22 4 5 9 1 Automatic and Manual Joining of Multi MAC Access Points 23 4 5 9 2 Splitting Falsely Joined Access Points 23 4 5 10 802 11n Ree EE 24 4 5 10 1 Measured Access Points 2 EERSEERRREEEEEEREEEERRNEEEEEEEEEEEENNNEn 25 4 5 10 2 Simulated Re UE 25 AG Th Survevs List ccd ess AG aah ee ee A EU aaia nette de 26 4 7 The Building OT 26 NEE 26 4 9 Software Preferences se ee ee AE nr ne Onn Ee 28 5 Starting to work with Ekahau Site Survey sise 29 5 1 Starting Ekahau Site Survey siemens senciguesaavendencee va cheaasaeetateeaghietvadeceiae 29 5 2 Setting he Map and EE 29 5 2 1 Changing the Map Ne 30 5 3 Defining Network Requirements AA 30 6 Designing a Wi Fi Network ccccccssssssseeeeeceeeeeeeseseceeeeeeeeessseeseneeeeseeeseeesseeneeeeeeeeennss 33 6 1 Creating a Network Plan with Auto Planner essseeeeeeeeeeeeeererriessrrerirrnssssrrrrrrneee 34 6 1 1 Drawing and Editing KEE 34 Ekahau Site Survey iv
105. ting on 802 11a you should concentrate on analyzing the 2 4GHz frequency space Use the Configuration Side Bar explained below to configure the spectrum analyzer to scan the appropriate frequency space User Interface There are four main components to the Chanalyzer user interface three of which are most important for typical use The Spectral View the Topographic View and the Configuration Side Bar In all of the views x axis presents frequency This is configurable By default you are invest igating the 2 4GHz frequency space you can see channels at the bottom of the screen e Spectral View shows the amount of interference color over time the y axis In this view you can see how interference changes periodically This is very helpful to troubleshoot momentary interference sources such as Microwave ovens e Topographic View shows the amount of interference color and it s amplitude or in other words the strength of the interference y axis Chapter 9 Troubleshooting Detecting and Solving the Most Common Wi Fi Problems e Planar View provides you with current measurement results yellow line as well as average green and maximum blue measurement results e Configuration Side Bar allows you to adjust the frequencies to look at The following para meters should be typically configured Frequency space to measure The wider the measurement frequency is the more compre hensive overview you will get However th
106. ting signal information as well as end to end connectivity measurements e Start walking at a slow steady speed Click the map whenever you start or stop walking and whenever you change your speed or direction e Right click the map when you want to finish the current survey and continue from another location e Release the Record button when finished surveying Note Ekahau Site Survey automatically scrolls the map when you click your location close to the edge of the screen You can disable this feature from File gt Preferences The data is recorded continuously during a Survey not just when you click on the map The data will be interpolated on the map between two mouse clicks If you do not stop at any point but rather continue walking when reaching a given point you only need to click on the map once at every turn If you stop somewhere for more than one second you should click on the map when you arrive and click again on the same location as you leave The upside of the continuous recording is that you gather more data during your survey In addition you only need to click twice at the beginning and at the end when walking a straight line such as a hallway If SSID Broadcast has been disabled in the access points the SSID will not be detected by ESS However the MAC address and other information of the AP will still be detected Enabling at least one SSID to be broadcast for the duration of the site survey may help
107. to associate with an 802 11a access point Figure 8 17 Strongest Access Point visualization Floor 1 z Alignment Point 1 ee Mmes mer mens No audible access points Red color shows where this AP is the strongest one Orange color shows where this AP is the strongest one The area where each AP is the strongest is color coded per AP AON 8 3 9 Ping Round Trip Time Ping is perhaps the most common tool for ensuring the network is working by measuring the network latency During the Hybrid Survey the ESS sends ICMP request packets to the target host which by default is Default Gateway and listens for ICMP response packets and measures the Round Trip Time RTT of the packets 69 Chapter 8 Analyzing the Wi Fi Coverage and Performance The visualization displays the Round Trip Time of the Ping packets over the floor map The visu alization varies from 0 0 ms to 1000 0 ms When the RTT approaches 1000 ms the users may experience the network connection quality as decreased having problems from low quality VoIP calls to slow file Internet browsing The Legend of the visualization is not customizable Figure 8 18 Ping Round Trip Time visualization In this area the Round Trip Time has been 2 0 4 0 ms Click to enable or disable Contours Survey route ND 8 3 10 Ping Packet Loss When ESS measures the network performance by pinging the target host it measures the number of lost packets at the s
108. to be deployed separately for all floor maps If you are not satiesfied with the network plan you can just re run the Auto Planner with a different Requirement Access Point type and or Channel Assignment Every time you re run the Auto Planner it will clear the previous Access Point layout s and the AP configurations Alternatively you can manually change the location of the Access Point s with the Select tool or add more simulated access points For more details on how to work with simulated access points please refer to chapter Creating the Network Plan Manually Using Simulated Access Points on page 38 Figure 6 5 An example Wi Fi network plan created with the Auto Planner This particular network plan is optimized for Location Tracking Example Project Automatic Pla File Edit View Site Device Help ke H QQA al No Secondary WiFi Adapter No Primary Wi Fi Adapter we a Use GPS Access Points fall surveys FH Building M show Signal Strenath for My Access Points Ca x CN Es Es de GO d i zeen Planning Survey W Floor 1 17 17 Gi Floor 1 Ea et 8 F My lieneric 11n Dual Radio 1 Da mA KS D 1 Editus DEER 60 KH Floor 1 D C F My neric 11n Dual Radio 10 Da He en ai gd 44 Ve Edit Floor 1 D CE BIMy nerc ti
109. tures in Standard plus the following features e Automated Network Planning Design a network off site in 3D Also enables planning for extended coverage or capacity for an existing network e Automated Reporting Automatically generates comprehensive network documentation including coverage and performance maps network infrastructure layout and configuration and other information e GPS Enabled Outdoor Site Surveys For performing outdoor site surveys without clicking on the map using a GPS receiver GPS receiver not included 1 3 Technical Support Ekahau provides technical support free of charge for all customers for 30 days Customers who have purchased Ekahau Support will receive Ekahau Support services for 12 months from the date of purchase Ekahau Support includes e All upgrades and patches for the product s and documentation purchased e Free of charge support via e mail at support ekahau com preferred and telephone during regular business hours PST EST GMT 2 Bug fix patches are free of charge for all customers To renew your Ekahau Support please contact your Ekahau representative or sales ekahau com 1 4 Backward Compatibility Ekahau Site Survey is backwards compatible with the following Ekahau products 1 4 1 Compatibility with previous Ekahau Site Survey versions e The Ekahau Site Survey 5 0 is able to open older project files esx ESS 5 0 can open files created with any previous Ekahau Site Survey 4 x ve
110. u can make a duplicate of the selected Requirement The requirements are explained in more detail in chapter Visualizing Network Coverage and Performance Chapter 5 Starting to work with Ekahau Site Survey 32 33 Chapter 6 Designing a Wi Fi Network 6 Designing a Wi Fi Network Note The network design capabilities are only available in Ekahau Site Survey Pro version You may skip this chapter if you want to directly perform to performing site survey or troubleshooting When designing a new Wi Fi network Ekahau Site Survey is able to create a network plan for you automatically In ESS this feature is called as Auto Planner The Auto Planner saves you significant amounts of time by cutting down the manual work of placing access points and configuring their channels by hand Prior to deploying a Wi Fi network with the Auto Planner you will need to indicate the coverage area s where you need Wi Fi coverage In addition you will need to draw walls for the coverage area s so that ESS can calculate the optimal AP locations and configuration s In case you want to deploy a network plan for multi floor building s please refer to chapter Designing Wi Fi Networks for Multi Floor Buildings on page 40 for more information on how to define multi floor buildings Proper network planning will reduce costs in the long run and will lead to better coverage and performance also After creating the network plan you will know e The optimal
111. u can select the visualization by adjusting the two drop down menus at the top of the screen one selects the visualization and the other selects the access points to show the visualization for More about visualizations in chapter Analyzing the Wi Fi Coverage and Performance on page 53 Show Signal Strength For My Access Points sl E 4 4 Toolbar The toolbar includes the icons for the most common actions Description Open Open a Project H Save Save the Project Report Generate a Report in PDF or RTF R Zoom In Zoom in to see an area in more detail el Zoom Out Zoom out to see a wider area of the map at once a Zoom to Fit Fit the map into the window a Zoom 1 1 Zoom to see the map in its actual pixel size 4 5 The Access Point List Both simulated and measured access points are listed in the Access Point List on the left hand side of the screen The access points are grouped by floor Only the access points on the floor you are currently viewing are displayed by default To see APs on other floors click on the floor name to see the APs for that floor Chapter 4 User Interface Overview Figure 4 3 Access point list view Example Project Pro esx Ekahau Site Survey File Edit View Site Device Help LILI r gt Clues Access Points Pi 1 2 Show Signal Strength x for Selected Access Points 3 F pad ai Quick Select k m Soa V D Not play 3 F 4
112. uilding layout and floor alignment points 2 Select Network Health for My APs and select the appropriate Requirement 3 Start placing access points and configuring them Use the Network Health visualization to see if the network meets your requirements If it does not use the Network Issues visualization to see what the problem is If it is low signal strength or overlap add more access points or move the existing access points If the problem is low signal to noise ratio or low data rate the problem may be in the channel separation there is probably just too much channel interference Optimize the channel sep aration by adjusting the channels of the APs for 802 11b g channel separations such as 1 6 11 1 4 8 11 1 5 9 13 or 1 7 13 are typically recommended 4 Continue until you have found a satisfactory wireless network Chapter 6 Designing a Wi Fi Network 40 6 3 Designing Wi Fi Networks for Multi Floor Buildings In multi floor buildings signals propagate through floors just like they propagate through walls It is essential to take this into account when designing Wi Fi networks as the floor to floor signal propagation can be used to your benefit You may need less access points as an access point on the floor above or below may cover an area that would have need an additional access point oth erwise However the signals penetrating floors may also harm the network performance if there is co channel interference creat

Ekahau Site Survey - Onlinecampus Virtuelle PH

Contents

Download Pdf Manuals

Related Search

Related Contents