X-Micro Tech. WL-1502 Network Card User Manual
Contents
1. 2 2 address Se WLAN Broadband Router WAN Interface Setup This page is used to configure the parameters for Internet network which connects to the WAN of Basic Settings your Access Point Here you may change the setting for IP addresss PPPoE DNS etc Attain IP Automatically DHCP Settings C Fixed IP p LAN E IP Address _ Firewall Subnet Mask Statistics Default Gateway C PPPoE User Name Password Connection Type Idle Time ee http 192 168 1 254 tcpipwan asp 1 Internet Screenshot WAN Interface Setup 1 3 WLAN Broadband Router Microsoft Internet Explorer xj File Edit View Favorites Tools ae Back x gt Search 5 Favorites GA lt Address Dr http 192 168 1 254 home asp Go Links Y MICRO mo pew vateway 6 1265953 C PPPoE EU User Name Basic Settings Advanced Settings Password Connection Type pi LAN 1 1000 minutes WAN Interface Attain DNS Automatically C Set DNS Manually leload 5 settings DNS 1 sword DNS 2 DNS 3 Clone MAC Address 000000000000 Apply Changes Reset E2. ctm 8 3 3 MANAGEMENT AND CONFIGURATION ON THE X MICRO WLAN 11B BROADBAND ROUTERS 3 3 1 STATU Sey X see ee ene eee 8 3 32 WIRELESS BASIC SETTINGS 23 995 uet eb Uer voee ut E etr dl mesi acri e 10 3 3 3 WIRBLESS ADVANCED SET TINGS tem od beds 12 3 3 4 WIRELESS SECURITY SETUP i etsi doo outta metet 13 3 3 5 WIRELESSACCESS E 14 3 3 6 AN UINEBREACB SETUP 16 3 5 7 WA NUINTEREACE SETUP MM TAIN 17 3 3 8 FIREWALL PORT UVR ING tenete 20 3 3 9 FIREWALLE IP bubo T 2 S310 PIBEWALLSMAC FILTERING Ph deae uu Eu Do a ou Seed dana e 22 JA FIREWALL PORT OR WARDING dete 23 Rl FIREN EIU 25 SX NEM I UC IMG ETE RE COEUR 26 33 14 UPGRADE FIRMWARE vacate quib o e e o ema ibat cab 27 SAVARI COAD SETTINGS 27 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 UE 3 PASSWORD SE FUP GU eger GNI E a feq Mer aa us 28 4 FREQUENTLY ASKED QUESTIONS 0 ccce ee eere eee eee eee eee eese eese eeeeeeenaus 30 4 1 WHAT AND HOW TO FIND MY PC S IP AND MAC ADDRESS ee
3. puce 3 1 5 Rear Panel Description Fieure 2 X Micro WLAN 11b Broadband Router Rear Panel Interfaces Description 1 WAN The RJ 45 socket allows WAN connection through a Category 5 cable Support auto sensing on 10 100M speed and half full duplex comply with IEEE 802 3 802 3u respectively 2 LAN The RJ 45 sockets allow LAN connection through Category 5 cables Support auto sensing on 10 100M speed and half full duplex comply with IEEE 802 3 802 3u respectively USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 3 Power The power jack allows an external DC 9 V power supply connection The external AC to DC adaptor provide adaptive power requirement to the X Micro WLAN 11b Broadband Router 4 Antenna The Wireless LAN Antenna USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 RUE RE 2 Installation 2 1 Hardware Installation Step One Place the X Micro WLAN 116 Broadband Router to the best optimum transmission location The best transmission location for your X Micro WLAN 116 Broadband Router is usually at the geographic center of your wireless network with line of sign to all of your mobile stations Step Two Connect the X Micro WLAN 116 Broadband Router to your wired network Connect the Ethernet WAN interface of X Micro WLAN 116 Broadband Router by category 5 Ethernet cable to your switch hub xDSL modem or cable modem A straight through Ethernet cab
4. WAN Interface MAC Address Comment Firewall HEGLE Apply Ch anges Reset Upgrade Firmware 4 Save Reload Settin qs EE P asswor d Current Access Control List 00 20 ed 81 02 45 Eric s NB 00 20 4 81 02 78 Jason s Delete Selected Delete All Reset E Done Internet Screenshot Wireless Access Control Item Description Enable WEP Security Click the check box to enable wireless access control This 1s a security control function only those clients registered in the access control list can link to this X Micro WLAN 116 Broadband Router MA C Address Fill in the MAC address of client to register this X Micro WLAN 11b Broadband Router access capability Apply Changes Click the Apply Changes button to register the client to new configuration setting Reset Click the Reset button to abort change and recover the previous configuration setting Current Access It shows the registered clients that are allowed to link to Control List this X Micro 11b WLAN Broadband Router right removed from this X Micro WLAN 116 Broadband Router DUE OE allowed list USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 Reset Click the Reset button to abort change and recover the previous configuration setting 3 3 6 LAN Interface Setup This page is used to configure the parameters for local area network that connects to the LAN ports of
5. X MICRO IEEE 802 11b WLAN 11b Broadband HRouter User Manual IEEE 802 11b X Micro WLAN 11b Broadband Router User s Manual Version daz Trademarks 02003 X Micro Technology Corp Contents are subject to change without notice trademarks belong to their respective proprietors Copyright Statement THIS DOCUMENT CONTAINS OF PROPRIETARY TECHNICAL INFORMATION THAT IS THE PROPERTY OF X MICRO TECHNOLOGY CORP AND NO PART OF THIS DOCUMENTATION MAY BE REPRODUCED STORED IN A RETRIEVAL SYSTEM OR TRANSMITTED IN ANY FORM OR BY ANY MEANS ELECTRICAL OR MECHANICAL BY PHOTOCOPYING RECORDING OR OTHERWISE WITHOUT THE PRIOR WRITTEN CONSENT OF X MICRO TECHNOLOGY CORP http www x micro com USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 Terminology JOOO ANSI American National Standards Institute AP Access Point CCK CSMA CA CSMA CD j Complementary Code Keying Carrier Sense Multiple Access Collision Avoidance Carrier Sense Multiple Access Collision Detection Dynamic Host Configuration Protocol Direct Sequence Spread Spectrum Federal Communications Commission File Transfer Protocol IEEE Institute of Electrical and Electronic Engineers ISM Industrial Scientific and Medical LAN Local Area Network MAC Media Access Control NAT Network Address Translation NT Network Termination PSD Power Spectral Density RF Radio Frequen
6. 3 3 9 Firewall IP Filtering Entries in this table are used to restrict certain types of data packets from your local network to Internet through the Gateway Use of such filters can be helpful in securing or restricting your local network WLAN Broadband Router Microsoft Internet Explorer xj File Edit Favorites Tools a Back _ Search ye Favorites Media X Address http 192 168 1 254 home asp J gt Go Links i MICRO KZA Site contents IP Filtering ny Status T MT Entries in this table are used to restrict certain types of data packets from your local network Basic Settings to Internet through the Gateway Use of such filters be helpful in securing or restricting Advanced Settings yout local network Enable IP Filtering Interface LoalIP Address Protocol Both Comment NAN Interfac Apply Changes Reset Port Filtering IP Filtering 3 P NET N B MAC Filtering dissin Port Forwarding IP Address Protocol Commen ID 192 168 1 20 TCP Statistics S Delete Selected Delete Reset Done Internet 21 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 el Screenshot Firewall IP Filtering Item Description Local IP Address To restrict data transmission from local network on Protocol certain I
7. Apply Changes Reset Done 7 Screenshot Wireless Security Setup Item Description Enable WEP Security Click the check box to enable WEP security function Refer to 4 9 What is WEP Key Length Select the WEP shared secret key length from pull down menu The length can be chose between 64 bit and 13 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 a 3 3 5 128 bit known as WEP keys The WEP key is composed of initialization vector 24 bits and secret key 40 bit or 104 bit pompe NNNM aqui c menu The format can chose between plant text ASCII and hexadecimal HEX code Default Tx Key Set the default secret key for WEP security function Value can be chose between 1 and 4 Apply Changes Click the Apply Changes button to complete the new configuration setting Reset Click the Reset button to abort change and recover the previous configuration setting OO 64 bit 128 bit asc i HEX 10 hexadecimal codes 26 hexadecimal codes RRRueskassuesRR RRRR SN RS RR SN S RS RR SR GG GGG GIG SS GG GU HG SG GUT SOS UG GU TG GOES eeeeseeese
8. LAN interfaces from pull down menu DHCP Client Range Fill in the start IP address and end IP address to allocate a range of IP addresses client with DHCP function set will 16 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 a 3 3 7 be assign a IP address from the range Aude O M ME M that shows the active clients with their assigned IP address MAC address and time expired information RENE me THEM Tree function from pull down menu a nere cloned Clone MAC address is designed for your special application that request the clients to register to a server machine with one identified MAC address Since that all the clients will communicate outside world through the X Micro WLAN 116 Broadband Router so have the cloned MAC address set on the X Micro WLAN 11b Broadband Router will solve the issue IRE s configuration setting 328 Pies de Masc a previous configuration setting WAN Interface Setup This page 15 used to configure the parameters for wide area network that connects to WAN port of your X Micro WLAN 116 Broadband Router Here you may change the setting for IP address PPPoE and DNS etc 17 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 ET WLAN Broadband Router Microsoft Internet Explorer E i81 xl File Edit View Favorites Tools Help Back Search 5 Favorites GA
9. The Port Range for data transmission Comments let you know about whys to allow data packets forward to the IP address and port number Apply Changes Click the Apply Changes button to register the IP address and port number to Port forwarding list USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 Delete Selected Click to delete the selected IP address and port number that will be removed from the port forwarding list Delete Click to delete all the registered entries from the port forwarding list jan c E n E previous configuration setting 3 3 12 Firewall DMZ A Demilitarized Zone 15 used to provide Internet services without sacrificing unauthorized access to its local private network Typically the DMZ host contains devices accessible to Internet traffic such as Web HTTP servers FTP servers SMTP e mail servers and DNS servers 4 WLAN Broadband Router Microsoft Internet Explorer 8 File Edit View Favorites Tools Help ae 2 2 ALES Back Search X Favorites a Media E Address http 192 168 1 254 home asp gt Go Links gt MICRO WAP uter Site contents DMZ Bs Wireless A Demilitarized Zone is used to provide Internet services without sacrificing unauthorized access to its local private network Typically the DMZ host contains devices accessible to Internet traffic such as Web
10. Use of such filters can be helpful in securing or restricting your local network Sag ontrol V Enable Port Filtering ings TET LAN nns Protocol Both LB VAN Interfac Apply Changes Reset B Part Filtering IP Filtering MAC Filtering Current Filter Table Port Forwarding omz 10002 10006 TCP UDP L Upgrade Firn r Up re He GHI SS Delete All Pass Done 7 Screenshot Firewall Port Filtering Item abil USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 e Port Range To restrict data transmission from the local network on Protocol certain ports fill in the range of start port and end port Comments and the protocol also put your comments on it The Protocol can be TCP UDP or Both Comments et you know about whys to restrict data from the ports Apply Changes Click the Apply Changes button to register the ports to port filtering list Reset Click the Reset button to abort change and recover the previous configuration setting Delete Selected Click to delete the selected port range that will be removed from the port filtering list Delete Click to delete all the registered entries from the port filtering list Reset Click the Reset button to abort change and recover the previous configuration setting
11. 1 Internet Screenshot WAN Interface Setup 2 Item Description Attain IP Click to select DHCP support on WAN interface for IP Automatically address assigned automatically from a DHCP server 18 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 DHCP A M are IP address subnet mask and default gateway settings need to be done Pae o in the IP address for it xu Wen acs RI in the subnet mask for it aac eae s in the default gateway for WAN interface out going data packets Ze bras E E are user name password connection type and idle time settings need to be done Zu M EE the user name and password to login the PPPoE server Zum REN RR _ the user name and password to login the server pomum iiem NNNM AE TENON EER SUIT gr TR mu are Continuous Connect on Demand and Manual three types to select Continuous connection type means to setup the connection through PPPoE protocol whenever this X Micro WLAN 116 Broadband Router is powered on Connect on Demand connection type means to setup the connection through PPPoE protocol whenever you send the data packets out through the WAN interface there are a watchdog implemented to close the PPPoE connection while there are no data sent out longer than the idle time s
12. HTTP servers FTP servers SMTP e mail servers and DNS Port Filtering servers Filtering B MAC Filtering Enable DMZ ort i TET DMZ Host IP Address 192 1 58 1 10 Apply Changes Reset i TCP IP Settings e Internet Screenshot Firewall DMZ Item Description DMZ Host IPAddress support DMZ in your firewall design fill in the IP address of DMZ host that can be access from the WAN interface 25 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 e address of DMZ host Reset Click the Reset button to abort change and recover the previous configuration setting 3 3 13 Statistics This page shows the packet counters for transmission and reception regarding to wireless Ethernet LAN and Ethernet WAN networks 3 WLAN Broadband Router Microsoft Internet Explorer 5 File Edit View Favorites Tools ae a Back 2 2 Search 5 Favorites GA E Address ei http 192 168 1 254 home asp Go Links 2 MICRO Site contents Statistics This page shows the packet counters for transmission and reception regarding to wireless and Ethernet networks i Sent Packets 556 tings Wireless LAN LAN Interface Received Packets 0 E OWAN Interface sent Packets 623 B WAN Interface Ethernet LAN Received Packet
13. Network Components If TCP IP is not installed click the Add button to install it otherwise go to step 6 Select Protocolin the Network Component Type dialog box and click Add button 5 Select TCP IP in Microsoft of Select Network Protocol dialog box then click OK button to install the TCP IP protocol it may need the Microsoft Windows CD to complete the installation Close and go back to Network dialog box after the TCP IP installation Select TCP IP and click the properties button on the Network dialog box 7 Select Specify an IP address and type in values as following example v IPAddress 192 168 1 1 any IP address within 192 168 1 1 to 192 168 1 253 is good to connect the Wireless LAN Access Point v IP Subnet Mask 255 255 255 0 8 Click OK and reboot your PC after completes the IP parameters setting For OS of Microsoft Windows 2000 XP 1 Click the Start button and select Settings then click Control Panel The Control Panel window will appear 6 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 E Move mouse and double click the right button on Network and Dial up Connections icon Move mouse and double click the Local Area Connection icon The Local Area Connection window will appear Click Properties button in the Local Area Connection window Check the installed list of Network C
14. access 30 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 to the wired LAN for services file servers printers Internet links they will operate in infrastructure mode Distribution amp vstem Dg Access Paint Access Point Basic Service Set Extended Service Setr ES S Example 1 wireless Infrastructure Mode Ad hoc mode also called peer to peer mode or an Independent Basic Service Set or IBSS 15 simply a set of 802 11 wireless stations that communicate directly with one another without using an access point or any connection to a wired network This mode is useful for quickly and easily setting up a wireless network anywhere that a wireless infrastructure does not exist or 1s not required for services such as a hotel room convention center or airport or where access to the wired network 15 barred such as for consultants at a client site Independent Basic Service Set Example 2 wireless Ad Hoc Mode 4 5 Whatis BSSID A six byte address that distinguishes a particular a particular access point from others Also know as just SSID Serves as a network ID or name 4 6 Whatis ESSID The Extended Service Set ID ESSID 15 the name of the network you want to access It is used to identify different wireless networks 3l USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 RUE RE 4 7 What are potential factors that may
15. causes interference Factors of interference gt Obstacles walls ceilings furniture etc Building Materials metal door aluminum studs Electrical devices microwaves monitors and electrical motors Solutions to overcome the interferences v Minimizing the number of walls and ceilings V Position the WLAN antenna for best reception v Keep WLAN devices away from other electrical devices eg microwaves monitors electric motors etc V Add additional WLAN Access Points if necessary 4 8 What are the Open System and Shared Key authentications IEEE 802 11 supports two subtypes of network authentication services open system and shared key Under open system authentication any wireless station can request authentication The station that needs to authenticate with another wireless station sends an authentication management frame that contains the identity of the sending station The receiving station then returns a frame that indicates whether it recognizes the sending station Under shared key authentication each wireless station 15 assumed to have received a secret shared key over a secure channel that 1s independent from the 802 11 wireless network communications channel 49 What is WEP An optional IEEE 802 11 function that offers frame transmission privacy similar to a wired network The Wired Equivalent Privacy generates secret shared encryption keys that both source and destination stations can use to alert frame bits
16. your X Micro WLAN 116 Broadband Router Here you may change the setting for IP address subnet mask DHCP etc Z WLAN Broadband Router Microsoft Internet Explorer 2 581 File Edit View Favorites Tools KI x 2 4 Search Sf Favorites GA O E Address amp http 192 168 1 254 home asp gt J so Links iil MICRO 58 contents LAN Interface Setup Status gt This page is used to configure the parameters for local area network which connects to the Basic Settings LAN port of your Access Point Here you may change the setting for IP addresss subnet Advanced Settings mask DHCP etc Security 8 IP Address 192 168 1 254 Subnet Mask 255 255 0 0 Firewall Default Gateway tub DHCP Server Enabled Upgrade Firmware Bi Save Reload Settings DHCP Client Range 1921681100 192 168 1 200 Show Client Password 802 14 Spanning Tree Disabled Clone MAC Address 000000000000 Apply Changes Reset 0 0 0 0 E 1 Internet screenshot LAN Interface Setup Item Description eee 22 vm sae a tae CP THM NET it etic of ies WLAN 11b Broadband Router per mu RD ee X Micro WLAN 11b Broadband Router Default Gateway Fill in the default gateway for LAN interfaces out going data packets DHCP Server Select to enable or disable the DHCP server function on
17. your access point including various bits of information about it to the wireless world around it By disabling that feature the SSID configured in the client must match the SSID of the access point Some wireless devices don t work properly if SSID isn t broadcast for example the D link DWL 120 USB 802 11b adapter Generally if your client hardware supports operation with SSID disabled it s not a bad idea to run that way to enhance network security However it s no replacement for WEP MAC filtering or other protections 34 WWW X micro com
18. AC address of WAN interface of X Micro WLAN 116 Broadband Router 3 3 2 Wireless Basic Settings This page 15 used to configure the parameters for wireless LAN clients that may connect to your Broadband Router Here you may change wireless encryption settings as well as wireless network parameters 10 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 E WLAN Broadband Router Microsoft Internet Explorer E x File Edit view Favorites Tools Help ae O u O HAA 4 Search 5 Favorites GA 4 2 E Address ei http 192 168 1 254 home asp gt Go Links Site contents i Status asic Settings nced Settings DE 98 LAN Interface B WAN Interface Firewall MICRO Wireless Basic Settings This page is used to configure the parameters for wireless LAN clients which may connect to your Access Point Here you may change wireless encryption settings as well as wireless network parameters Alias Name WLAN Broadband Disable Wireless LAN Interface SSID MyWLAN B Statistics Up Firmware Joad Settin 95 Channel Number Associated Clients Show Active Clients Apply Changes Reset E Internet Screenshot Wireless Basic Settings Item Description It is the alias name of this X Micro WLAN 11b Broadband Router The alias name can be 32 characters Disable Wir
19. N Broadband Router Save Reload Settings Odey Oh 5m 40s 1 1 SSID MyWLAN Channel Number 11 WEP Disabled Associated Clients 0 BSSID 00 02 72 0 09 a9 IP Address 192 168 1 254 Subnet Mask 255 255 0 0 Default Gateway 192 168 1 254 DHCP Server Enabled MAC Address 00 02 72 0 09 a9 E 1 Internet Screenshot Status 1 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 WLAN Broadband Router Microsoft Internet Explorer File Edit View Favorites Tools Help 2 4 Search 5 Favorites GA 2 E Address http 192 168 1 254 home asp Go Links ai MICRO contents Alias Name X Micro WLAN Broadband Router BB Status Uptime Oday 14h 14m31s Firmware Version vil SSID MyWLAN y Channel Number 11 S Control WEP Disabled TCP IP Settings Associated Clients 0 Interface BSSID 00 02 72 97 09 9 WAN Interface Bl Firewall IP Address 192 168 1 254 B statistics Subnet Mask 255 255 0 0 e Firmware Default Gateway 192 168 1 254 Save Reload Settings DHCP Server Enabled ace MAC Address 00 02 72 80 09 9 Attain IP Protocol Getting IP from DHCP server IP Address 0000 Subnet Mask 0 0 0 0 Default Gateway 0 0 0 0 MAC Address 00 02 72 80 09 E 1 Internet Screenshot Status 2 Wem Description 0 0 0000 pes gt EN Broadband Router 2m _ m NNNM Broadband Route
20. P addresses fill in the IP address and the Comments protocol also put your comments on it The Protocol can be TCP UDP or Both Comments et you know about whys to restrict data from the IP address Apply Changes Click the Apply Changes button to register the IP address to IP filtering list Reset Click the Reset button to abort change and recover the previous configuration setting Delete Selected Click to delete the selected IP address that will be removed from the IP filtering list reote ronem e o mon IP filtering list previous configuration setting 3 3 10 Firewall MAC Filtering Entries in this table are used to restrict certain types of data packets from your local network to Internet through the Gateway Use of such filters can be helpful in securing or restricting your local network 22 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 WLAN Broadband Router Microsoft Internet Explorer B x File Edit View Favorites Tools Help i Bak J x 4 Search 5 Favorites GA 2 E Address amp http 192 168 1 254 home asp gt Go Links MICRO MAC Filtering Entries in this table are used to restrict certain types of data packets from your local network to Internet through the Gateway Use of such filters can be helpful in securing or restricting your local network LAN In
21. Supports 11Mbps data transfer rate with automatic fallback to 5 5M 2M and 1 Mbps gt Supports bridging routing functions between wireless and wired Ethernet interfaces v Supports 64 bit and 128 bit WEP encryption decryption function to protect the wireless data transmission Supports IEEE 802 3x full duplex flow control on 10 100M Ethernet interface Supports DHCP server to provide clients auto IP addresses assignment Supports DHCP client for Ethernet WAN interface auto IP address assignment Supports static and dynamic IP routing Supports PPPoE on Ethernet WAN interface Supports clone MAC address function VV VV VV V Supports firewall security with port filtering IP filtering MAC filtering port forwarding trigger port and DMZ hosting functions gt Supports WEB based management and configuration 14 Front Panel Description LAN WAN O 0 0 0 PWO wom O 3 LED Indicator State Description 1 Power LED On The WLAN 11b Broadband Router is powered on Off The WLAN 11b Broadband Router is powered off USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 2 WLAN Activity LED Flashing Data is transmitting or receiving on the antenna SERENA P TUTTI enc DIT DURAS SPUR UC ctm qm ES e interface a ae RC KI I HN meme tn ene TT T __ n P E interface ERE EE
22. acket size used for fragmentation Packets larger than the size programmed in this field will be fragmented If you find that your corrupted packets or asymmetric packet reception all send packets for example You may want to try lowering your fragmentation threshold This will cause packets to be broken into smaller fragments These small fragments if corrupted can be resent faster than a larger fragment Fragmentation increases overhead so you ll want to keep this value as close to the maximum value as possible 4 11 What is RTS Request To Send Threshold The RTS threshold 15 the packet size at which packet transmission is governed by the RTS CTS transaction The IEEE 802 11 1997 standard allows for short packets to be transmitted without RTS CTS transactions Each station can have a different RTS threshold RTS CTS is used when the data packet size exceeds the defined RTS threshold With the CSMA CA transmission mechanism the transmitting station sends out an RTS packet to the receiving station and waits for the receiving station to send back a CTS Clear to Send packet before sending the actual packet data This setting is useful for networks with many clients With many clients and a high network load there will be many more collisions By lowering the RTS threshold there may be fewer collisions and performance should improve Basically with a faster RTS threshold the system can recover from problems faster RTS packets consu
23. al IP address assign and other WLAN router configuration The description includes the implementation of the above steps Notice It will take about 25 seconds to complete the boot up sequence after powered on the X Micro WLAN 11b Broadband Router all LEDs are blank while booting except the Power LED and after that the WLAN Activity LED will be flashing to show the WLAN interface is enabled and working now 1 1 Package contents The package of the X Micro WLAN 116 Broadband Router includes the following items v X Micro WLAN 11b Broadband Router v The AC to DC 9V Power Adapter Y User s manual CD ROM 2 Product Specifications Frequency Band 2 4GHz 2 497GJz ISM Band DSSS ED Security 64 bit 128 bit WEP port filtering IP filtering MAC He 3 x ct 3 a z zZ o s go e B filtering port forwarding and DMZ hosting One 10 100BaseT with RJ45 connector WAN Four 10 100BaseT with RJ45 connectors LAN Power Consumption DC 9V Power Adapter gt Z p e CD h 1 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 SSS Dimension 110x35 mm Operating Temperature 0 50 ambient temperature Storage Temperature 20 70 ambient temperature Humidity 5 to 90 maximum non condensing 13 Product Features gt Complies with IEEE 802 11b standard for 2 4GHz Wireless LAN gt
24. b server of Access Point Empty user name and password will disable the protection E s Control User Name craig v AP setting S eese AN Interface WAN Interface Confirmed Password ZT B Port Filtering IP Filtering Reset MAC Filtering Port Forwarding DMZ Statistics e Firmware eload Settings e Internet screenshot Password Setup Item Description User Name Fill in the user name for web management login control New Password Fill in the password for web management login control Confirmed Password Because the password input is invisible so please fill in the password again for confirmation purpose biens I Md M NM IEEE MEN means to apply no web management login control Click the Apply Changes button to complete the new configuration setting 29 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 UE UU 4 Frequently Asked Questions FAQ 4 4 2 4 3 4 4 What and how to find my PC s IP and MAC address IP address 1s the identifier for a computer or device on a TCP IP network Networks using the TCP IP protocol route messages based on the IP address of the destination The format of an IP address 15 a 32 bit numeric address written as four numbers separated by periods Each number can be zero to 255 For example 191 168 1 254 could be an IP address The MAC Media Access Cont
25. behind your Gateway s NAT firewall yj WLAN Broadband Router Microsoft Internet Explorer File Edit View Favorites Tools Help ae E 2 E Search 5 Favorites E Address amp http 192 168 1 254 home asp gt Go Links MICRO EU Port Forwarding Entries in this table allow you to automatically redirect common network services to a specific machine behind the NAT firewall These settings are only necessary if you wish to host some sort of servet like a web server or mail server on the private local network behind your Gateway s firewall g Control CP IP setting S 7 Enable Port Fo IP Address Protocol Both Port Range Comment Port Filtering IP Filtering RED Filtering 9 Port Forwarding DMZ i Statistics Current Port Forwarding Table e Firmware Local IP Address Protocol Range Comment Select eload Settings 192 168 1 10 TCP UDP 88 1 Delete Selected Reset E Done 16 Internet Screenshot Firewall Port Forwarding feo OASIS EEE Taada m Forwarding Pe dp be MI EE Protocol IP address that hosted in local network behind the NAT Port Range firewall fill in the IP address protocol port range and Comment your comments The Protocol can be TCP UDP or Both
26. cy O SNR Signal to Noise Ratio SSID Service Set Identification TCP Transmission Control Protocol WEP Wired Equivalent Privacy Wireless Local Area Network USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 RUE RE Table of Contents OL Cet IV L INTRODUCCION Se ev devo leva sees et ecu det eeu rau ad ovde Se Ed 1 1 1 PACKAGE CONTENTS misce esce 1 1 2 PRODUCT SPECIFICATIONS a a doe utet 1 1 3 euh ciet up Ee a uA eR Dez eta t Med de 2 1 4 FRONT PANEL DESCRIPTION cccscececcscsceccscscscececcscscececescscscecesescecscsescscececescscscesesesescecess 2 1 5 REAR PANEL DESCRIPTION cceccececcececcececcsceccececcccscescecesescecesceceececescscesescusescecescecesesceses 3 Ds Del eer 5 22 HARDWARE INSTALLATION cceccecescsceccsceccsceccscecescscscecesescecescecescscsescesescesescesescecesesceses 5 2 2 SOFTWARE INSTALI ATON e Mte taedia Maite ead ma Ru tees Matte a ELM EAM DRE oT 5 5 SOFIWARECONFIGURATIQN iei eeteeereaub o blan US Eau be Ee IRURE CE E EAE EN Oe ERE Eee Eo FER Ue EE eu Ee ENTR 6 3 1 PREPARE YOUR PC TO CONFIGURE THE X MICRO WLAN 11B BROADBAND ROUTER 6 3 2 CONNECT TO THE X MICRO WLAN 11B BROADBAND ROUTER
27. eless LAN Tick on to disable the wireless LAN data transmission _ Interface It 15 the wireless network name The SSID can be 32 bytes long BEN pull down menu Gn gt gt Wireless Client Table that shows the MAC address transmit packet receive packet and transmission rate for each associated wireless client Click the Apply Changes button to complete the new configuration setting 11 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 3 3 3 Wireless Advanced Settings These settings are only for more technically advanced users who have a sufficient knowledge about wireless LAN These settings should not be changed unless you know what effect the changes will have on your X Micro WLAN 116 Broadband Router WLAN Broadband Router Microsoft Internet Explorer 8 x File Edit View Favorites Tools Help Back _ Search 5 Favorites A 2 lt 4 2 E Address je http 192 168 1 254 home asp Go Links X MIcRO EU Site contents Wireless Advanced Settings Status These settings are only for more technically advanced users who have sufficient knowledge asic Settings about wireless These settings should not be change ess you know what effect the Ws tting b less LAN Th gs should be changed unless you kn hat effect th Advanced Settings changes will have on your Acces
28. eseeesneseseseesseesemssee seen UG UE GGG some GGG GGG Gu UTR ses GGG GOULSR senses GI Ig GG GuT 4 GI GGG GG HI S RG GG GI SR G GGHI IR GG G 3 AR G GGG seme GG UGG GGG P a a GG eg a a agg a a gag aar aurium rim ra m rim ri ems seeeeeseseeeeseseeeenesesseaeseseeseseesesesy Wireless Access Control If you enable wireless access control only those clients whose wireless MAC addresses are in the access control list will be able to connect to your Access Point When this option 1s enabled no wireless clients will be able to connect if the list contains no entries 14 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 E WLAN Broadband Router Microsoft Internet Explorer B x ix 2 4 Search 5 Favorites GA 2 E Address ei http 192 168 1 254 home asp gt Go Links MICRO File Edit Favorites Tools Help Lo Site contents Wireless Access Control Status If you enable wireless access control only those clients whose wireless MAC addresses are Basic Settings in the access control list will be able to connect to your Access Point When this option is Advanced Settings enabled no wireless clients will be able to connect if the list contains no entries Security Access Control amp TCP IP Settings Enable Wireless Access Control LAN Interface
29. et Manual connection type means to setup the connection through the PPPoE protocol by clicking the Connect button manually and clicking the Disconnect button manually ame dea um _ a d NEN connection type fill in the idle time for auto disconnect function Value can be between 1 and 1000 minutes 19 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 a 3 3 8 Attain DNS Click to select getting DNS address for DHCP PPPoE Automatically support Please select Set DNS Manually if the Fixed IP support 15 selected DNS 1 Fill in the IP address of Domain Name Server 1 2 i T IT EAE E ER AORE E E CEN PUT ee i a a mu configuration setting EE OT Em nemen pr tmn eer previous configuration setting Firewall Port Filtering Entries in this table are used to restrict certain types of data packets from your local network to Internet through the Gateway Use of such filters can be helpful in securing or restricting your local network WLAN Broadband Router Microsoft Internet Explorer NN 1815 File Edit View Favorites Tools Help rd Back gt Search ye Favorites a Media ls he Address a http 192 168 1 254 home asp E Go Links 2 MICRO Site con ontents Port Filtering Entries in this table are used to restrict certain types of data packets from your local network to Internet through the Gateway
30. installation Close and go back to Network dialog box after the TCP IP installation Select TCP IP and click the properties button on the Network dialog box Select Specify an IP address and type in values as following example v JP Address 192 168 1 1 any IP address within 192 168 1 1 to 192 168 1 253 is good to connect the Wireless LAN Access Point YIP Subnet Mask 255 255 255 0 Click OK to completes the IP parameters setting USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 3 2 Connect to the X Micro WLAN 11b Broadband Router Open a WEB browser i e Microsoft Internet Explore then enter 192 168 1 254 on the URL to connect the X Micro WLAN 111 Broadband Router 3 3 Management and configuration on the X Micro WLAN 116 Broadband Router 3 3 Status This page shows the current status and some basic settings of the device includes system wireless Ethernet LAN and WAN configuration information WLAN Broadband Router Microsoft Internet Explorer 4 i 81 xj File Edit View Favorites Tools Help Back ix A Search PX Favorites e Media Xx E Address amp http 192 168 1 254 home asp Go Links 2 MICRO 4E Site contents WLAN Broadband Router Status 2 ES Status Wireless This page shows the current status and some basic settings of the device E TCP IP Settings _ Firewall Statistics Upgrade Firmware i X Micro WLA
31. le with appropriate cable length 1s needed Step Three Supply DC power to the X Micro WLAN 116 Broadband Router Use only AC DC power adapter supplied with the X Micro WLAN 116 Broadband Router it may occur damage by using a different type of power adapter The hardware installation finished 2 2 Software Installation There are no software drivers patches or utilities installation needed but only the configuration setting Please refer to chapter 3 for software configuration USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 RUE RE 3 Software configuration There are web based management and configuration functions allowing you to have the jobs done easily The X Micro WLAN 116 Broadband Router is delivered with the following factory default parameters on the Ethernet LAN interfaces Default IP Address 192 16 1 254 Default IP subnet mask 255 255 255 0 WEB login User Name empty WEB login Password empty 3 Prepare your PC to configure the X Micro WLAN 11b Broadband Router For OS of Microsoft Windows 95 98 Me 1 Click the Start button and select Settings then click Control Panel The Control Panel window will appear Note Windows Me users may not see the Network control panel If so select View all Control Panel options on the left side of the window 2 Move mouse and double click the right button on Network icon The Network window will appear 3 Check the installed list of
32. load because it may crash the system Advanced Settings 8 vet y Access Control Select File firmwarewebpages gw Browse TCP IP Settings LAN Interface B WAN Interface pinna Reset Port Filtering IP Filtering MAC Filtering Port Forwarding B Statistics Done Internet Screenshot Upgrade Firmware Item Description Select File Click the Browse button to select the new version of web firmware image file Upload Click the Upload button to update the selected web firmware image to the WLAN 116 Broadband Router Reset Click Reset button to abort change and recover the previous configuration setting 3 3 15 Save Reload Settings This page allows you save current settings to a file or reload the settings from the 2 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 file that was saved previously Besides you could reset the current configuration to factory default WLAN Broadband Router Microsoft Internet Explorer File Edit Favorites Tools Help a Back 2 4 Search S f Favorites GA X address hetp 192 168 1 254home asp Go X MICRO KAZAA Save Reload Settings This page allows you save current settings to a file or reload the settings from the file which was saved previously Be
33. me valuable bandwidth however so setting this value too low will limit performance 4 12 What is Beacon Interval In addition to data frames that carry information from higher layers 802 11 includes management and control frames that support data transfer The beacon frame which 1s a type of management frame provides the heartbeat of a wireless LAN enabling 33 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 RE stations to establish and maintain communications in an orderly fashion Beacon Interval represents the amount of time between beacon transmissions Before a station enters power save mode the station needs the beacon interval to know when to wake up to receive the beacon and learn whether there are buffered frames at the access point 4 13 What 1s Preamble Type There are two preamble types defined in IEEE 802 11 specification A long preamble basically gives the decoder more time to process the preamble All 802 11 devices support a long preamble The short preamble is designed to improve efficiency for example for VoIP systems The difference between the two is in the Synchronization field The long preamble is 128 bits and the short is 56 bits 4 14 What is SSID Broadcast Broadcast of SSID is done in access points by the beacon This announces
34. omponents If TCP IP is not installed click the Add button to install it otherwise go to step 6 Select Protocolin the Network Component Type dialog box and click Add button Select 1 Microsoft of Select Network Protocol dialog box then click OK button to install the TCP IP protocol it may need the Microsoft Windows CD to complete the installation Close and go back to Network dialog box after the TCP IP installation Select TCP IP and click the properties button on the Network dialog box Select Specify an IP address and type in values as following example v IP Address 192 168 1 1 any IP address within 192 168 1 1 to 192 168 1 253 is good to connect the Wireless LAN Access Point v IP Subnet Mask 255 255 255 0 8 Click OK to completes the IP parameters setting For OS of Microsoft Windows NT l Click the Start button and select Settings then click Control Panel The Control Panel window will appear Move mouse and double click the right button on Network icon The Network window will appear Click Protoco tab from the Network window Check the installed list of Network Protocol window If TCP IP 15 not installed click the Add button to install it otherwise go to step 6 Select Protocolin the Network Component Type dialog box and click Add button Select in Microsoft of Select Network Protocol dialog box then click OK button to install the TCP IP protocol it may need the Microsoft Windows CD to complete the
35. r 15 powered on Broadband Router x a ee configuration E EA T Broadband Router The SSID 15 the unique name of X Micro WLAN Broadband Router and shared among its service area so all devices attempts to join the same wireless network can identify it Channel Number It shows the wireless channel connected currently WEP It shows the status of WEP encryption function Associated Clients It shows the number of connected clients or stations USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 LLILIILLLIILOELIIOSILLII LLLI ONLINE LI LIII LLL LIUIIZIZZZZXZIILILO lt BSSID It shows the BSSID address of the X Micro WLAN 11b Broadband Router BSSID 15 a six byte address IPAddress It shows the IP address of LAN interfaces of X Micro WLAN 116 Broadband Router a EE X Micro WLAN 11b Broadband Router XL ead hater calles Act A EE mu outgoing data packets Jo X M eres _ HI Sage TE WLAN 116 Broadband Router Attain IP Protocol It shows how the X Micro WLAN 11b Broadband Router gets the IP address The IP address can be set manually to a fixed one or set dynamically by DHCP server or attain IP by PPPoE connection IPAddress It shows the IP address of WAN interface of X Micro WLAN 11b Broadband Router a X Micro WLAN 116 Broadband Router ME E M MEE m outgoing data packets MAC Address It shows the M
36. rol address 15 your computer s unique hardware number On an Ethernet LAN it s the same as your Ethernet address When you re connected to the Internet from your computer or host as the Internet protocol thinks of it a correspondence table relates your IP address to your computer s physical address on the LAN To find your PC s IP and MAC address v the Command program in the Microsoft Windows v in ipconfig all then press the Enter button Your PC s IP address is the one entitled IP Address and your PC s MAC address 15 the one entitled Physical Address What 15 Wireless LAN A wireless LAN WLAN 15 a network that allows access to Internet without the need for any wired connections to the user s machine What are ISM bands ISM stands for Industrial Scientific and Medical radio frequency bands that the Federal Communications Commission FCC authorized for wireless LANs The ISM bands are located at 915 13 MHz 2450 50 MHz and 5800 75 MHz How does wireless networking work The 802 11 standard define two modes infrastructure mode and ad hoc mode In infrastructure mode the wireless network consists of at least one access point connected to the wired network infrastructure and a set of wireless end stations This configuration is called a Basic Service Set BSS An Extended Service Set ESS 15 a set of two or more BSSs forming a single subnetwork Since most corporate WLANS require
37. s 1031 Port Filtering Sent Packets 2328 IF Filtering Received Packets 0 MAC Filtering Refresh E Done Internet Description MEME M EE Sent Packets LAN interface ie Received Packets wireless LAN interface Rai NNNM Sent Packets Ethernet LAN interface KM an E EE NM Received Packets Ethernet LAN interface IARE NNNM Sent Packets Ethernet WAN interface 26 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 Ethernet WAN It shows the statistic count of received packets on the Received Packets Ethernet WAN interface Refresh Click the refresh the statistic counters on the screen 3 3 14 Upgrade Firmware This page allows you upgrade the Access Point firmware to new version Please note do not power off the device during the upload because 1 may crash the system WLAN Broadband Router Microsoft Internet Explorer Bl x File Edit View Favorites Tools Help QK 2 2 Search 5 Favorites O 2 Address http j 192 168 1 254 home asp gt Eco Links MICRO EU Site contents Upgrade Firmware Status Wireles S This page allows you upgrade the Access Point firmware to new version Please note do not Basic Settings power off the device during the up
38. s Point B Security Access Control Authentication Type C O TCP IP Settings Open System Shared Key Auto LAN Interface Fragment Threshold 2346 256 2346 B WAN Interface Pm RTS Threshold 2347 Firewall 0 2347 cud Beacon Interval hoo 20 1024 ms Jpgrade Firmw vare Data Rate Save Reload Settings Auto 65 Preamble Type LongPreamble Short Preamble Broadcast SSID Enabled Disabled Apply Changes Reset E Done Internet Screenshot Wireless Advanced Settings Item Description Authentication Type Click to select the authentication type in Open System Shared Key or Auto selection Fragment Threshold Set the data packet fragmentation threshold value can be written between 256 and 2346 bytes Refer to 4 10 What is Fragment Threshold RTS Threshold Set the RTS Threshold value can be written between and 2347 bytes Refer to 4 11 What is RTS Request To Send Threshold Beacon Interval Set the Beacon Interval value can be written between 20 and 1024 ms Refer to 4 12 What 1s Beacon Interval Data Rate Select the transmission data rate from pull down menu Data rate can be auto select 5 5M 2M or 1Mbps 12 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 _ l
39. se 30 4 2 WIBEEBESS LAN itecto mU RAE MEE ELM aes 30 4 3 WHAWARE ISM TANDS eatis 30 4 4 HOW DOES WIRELESS NETWORKING WORK sssccccssssccccessccecneecceeeaeseceeeuaeeceeeueeeceseuees 30 4 5 31 4 6 WHATI ES SID e EAE 31 4 7 WHAT POTENTIAL FACTORS THAT MAY CAUSES INTERFERENCE 32 4 8 WHAT ARE THE OPEN SYSTEM AND SHARED KEY AUTHENTICATIONS 32 4 9 WHATS WEP e eq Mat tee Ma 32 Z0 WHATIS FRAGMENT THRESHOELD7 32 4 11 WHAT IS RTS REQUEST TO SEND THRESHOLD 33 2127 AVHATUIS DBACONCINTBERV AI eta ipeo deus 33 4195 WHALTISPREAMBEE TYPE ea En I ede ERE E e E ne ee ER Red EA 34 WHATI SSID BROADCAST moes E n ento bob Debate Ge 34 V1 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 omen ML NL Introduction The X Micro WLAN 11b Broadband Router is an affordable IEEE 802 110 wireless LAN broadband router solution setting SOHO and enterprise standard for high performance secure manageable and reliable WLAN This document describes the steps required for the initi
40. sides you could reset the current configuration to factory default i A C Save Settings to File Save Settin qs Load Settings from File c config config gw bin d Upload LAN Interface 5 cAconfigiconfig qw bin Browse Reset Settings to Default Reset Port Filtering IP Filtering MAC Filtering B Port Forwarding E 1 Internet Screenshot Save Reload Settings Item Description Save Settings to File Click the Save button to download the configuration parameters to your personal computer Load Settings from Click the Browse button to select the configuration files File then click the Upload button to update the selected configuration to the X Micro WLAN 11b Broadband Router Sana 5 Default parameter to factory defaults 3 3 16 Password Setup This page 15 used to set the account to access the web server of Access Point Empty user name and password will disable the protection 28 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 WLAN Broadband Router Microsoft Internet Explorer E x File Edit View Favorites Tools Help ae di 2 2 4 Search 5 Favorites GA EA 2 E Address ei http 192 168 1 254 home asp gt Links MICRO Password Setup This page 15 used to set the account to access we
41. t Preamble Click to select the Long Preamble or Short Preamble support on the wireless data packet transmission Refer to 4 13 What 1s Preamble Type Broadcast SSTD Click to enable or disable the SSID broadcast function Refer to 4 14 What 1s SSID Broadcast Apply Changes Click the Apply Changes button to complete the new configuration setting Reset Click the Reset button to abort change and recover the previous configuration setting 3 3 4 Wireless Security Setup This page allows you setup the WEP security Turn on WEP by using encryption keys could prevent any unauthorized access to your wireless network E WLAN Broadband Router Microsoft Internet Explorer E x File Edit View Favorites Tools Help 7 u i i i Back gt x 2 Search ye Favorites a Media E Address http 192 168 1 254 home asp J gt Go Links MICRO Site contents Wireless Security Setup TE Status This page allows you setup the WEP security Turn on WEP by using Encryption Keys could Basic Settings prevent any unauthorized access to your wireless network B AN e ettings 7 Enable WEP Security Key Length 128 bit Key Format Default Tx Key key v a Sus ade Encryption Key 1 aan T veh e Re 6 ad S Settings Rog 2 Gacrysiien Ky 3
42. terface MAC Address Comment WAN Interface Apply Changes Reset E Bs 7 Enable MAC Filtering E ES Port Filtering Filtering MAC Filterin g Current Filter Table Por Forwarding M CAddes Commet Select 00 20 9 00 98 28 DUT 1 Beis i Upgrade Firmware Econo Delete Selected Delete All B Password Done Internet Screenshot Firewall MAC Filtering Item Description MA C Address To restrict data transmission from local network on Comments certain MAC addresses fill in the MAC address and your comments on it Comments et you know about whys to restrict data from the MAC address Apply Changes Click the Apply Changes button to register the MAC address to MAC filtering list Reset Click the Reset button to abort change and recover the previous configuration setting Delete Selected Click to delete the selected MAC address that will be removed from the MAC filtering list mi O I M E mE MAC filtering list previous configuration setting 3 3 11 Firewall Port Forwarding Entries in this table allow you to automatically redirect common network services 23 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 to a specific machine behind the NAT firewall These settings are only necessary if you wish to host some sort of server like a web server or mail server on the private local network
43. to avoid disclosure to eavesdroppers WEP relies on a secret key that 15 shared between a mobile station e g a laptop with a wireless Ethernet card and an access point 1 e a base station The secret key 1s used to encrypt packets before they are transmitted and an integrity check 15 used to ensure that packets are not modified in transit 4 10 What is Fragment Threshold The proposed protocol uses the frame fragmentation mechanism defined in IEEE 802 11 to achieve parallel transmissions A large data frame 1s fragmented into several 32 USER S MANUAL OF X MICRO WLAN 11b BROADBAND ROUTER Version 1 2 fragments each of size equal to fragment threshold By tuning the fragment threshold value we can get varying fragment sizes The determination of an efficient fragment threshold is an important issue in this scheme If the fragment threshold is small the overlap part of the master and parallel transmissions 15 large This means the spatial reuse ratio of parallel transmissions 15 high In contrast with a large fragment threshold the overlap is small and the spatial reuse ratio 1s low However high fragment threshold leads to low fragment overhead Hence there 15 a trade off between spatial re use and fragment overhead Fragment threshold is the maximum p
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