Custom Reports - heureka e
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1. Creating SNMP Monitors The following sections provide further detail on creating SNMP monitors in WhatsUp Professional Each monitor type is described and real world scenarios and solutions are used to give you ideas on how to use SNMP Monitors on your network Adding MIB to WhatsUp Professional In some cases you may want to add MIB files to the WhatsUp Professional system to make it easier to find specific OIDs within the MIB file If you are reporting and alerting on non enterprise OIDs you may be able to use the MIB files already installed with the application To add the MIB file to the application copy the file to the Ipswitch WhatsUp Professional Data Mibs folder in your installation directory Once the MIB is in that directory you must restart the WhatsUp Professional application to see the MIB in the MIB Browser Network Monitoring with SNMP 3 Where to get MIBs If you do not have the MIB files you need for your devices contact the device manufacturer or search their website If you still cannot find the proper file there are several online resources that you can try Cisco http www cisco com public sw center netmgmt cmtk mibs shtml mibDepot _ http www mibdepot com index shtml Standard MIBs are published in RFC Request for Comment and can be downloaded from the official RFC repository at http www ietf org rfc An SNMP Performance Monitor WhatsUp Professional is installed with four default performance2. Date range Custom Go Stattime 05 30 200 8 30AM x Endtime 05 30 2000 11 30 AM Temperature Sensor Temperature in F Tuesday May 30 2006 08 30 00 AM Tuesday May 30 2006 11 30 00 AM 11 30am Average 689 17 The report graphs all of the temperature readings gathered at the specified interval You can change the date and time of the displayed data to show more detail on the graph Below the graph the summary bar shows the maximum minimum and average value for the time period selected Note The temperature sensor used in this example reports the data in whole numbers instead of decimal The graph above shows 69 as 690 An SN MP Active Monitor Now that you have several days of performance data for your device you notice that you had occasional spikes in the data that you can t account for You can t tell if a door was left open a device was turned on or anything else that would explain this type of spike You decide that you want to be notified when one of these spikes occur but only if the spike is in your opinion too high To do this you can create an active monitor that watches the returned value and makes sure that the value falls in an acceptable range To create this monitor 1 2 On the Device Properties for the temperature device select Active Monitors On the Active Monitors section click Add The Select Active Monitor Type dialog appears Since you do n
3. SNMP Trap and click Configure On the configuration dialog select Listen for messages on port 162 Click OK to turn the listener on and click OK to close the dialog If you have Windows Trap Listener enabled on the WhatsUp Professional computer the SNMP Trap Listener will not work You must turn the Windows Trap Listener off first Network Monitoring with SNMP 7 On the Device Properties for the printer device select Passive Monitors 4 Onthe Passive Monitors section click Add The Select Passive Monitor Type dialog appears 5 Since you do not have an active monitor of this type configured in the Passive Monitor Library click Browse to access the Passive Monitor Library 6 Inthe Passive Monitor Library click New Select SNMP Trap as the type of monitor you want to create In the SNMP Passive Monitor instance dialog enter Printer Alerts in the Name box 9 In the Generic type Major box SNMP Passive Monitor Instance select 6 Enterprise Specific Nane 10 Click the Browse button to Description access the SNMP MIB Browser ae 11 In the SNMP MIB Browser find secon 4 mgmt gt mib 2 gt printmib gt prtAlert gt printerV1 Alert gt Payload printerV2AlertPrefix gt me ANS eee printerV2Alert This is the SNMP ee Trap ID for the printer MIB a default MIB installed with WhatsUp x Professional 12 Click OK 13 In the Enterprise OID box delete the last two digits behind the 2 in
4. for this Active Monitor and click Next 14 Select the type of action scenario you want to use for your monitor An action profile that you have configured through the Action Profile Library or select Apply individual actions to build a list of actions that you select from the Action Library 15 Click Finish to begin using this active monitor on the device Now that the monitor is configured you are alerted when the temperature reported by the sensor falls outside of the acceptable temperature range An SNMP Passive Monitor Many people depend on a particular network printer to publish business critical reports When this printer is down the print queue grows quite large before anyone notices that their reports are not being printed This causes delays that management deems unacceptable You have been tasked with monitoring this printer to make sure the toner is at an acceptable level and there are no errors keeping the printer from functioning properly To do this monitoring you decide to create an SNMP Passive Monitor that listens for critical error message and the message that says the toner level is low 1 Configure your device to send SNMP Traps to your WhatsUp Professional computer View your device s User Manual or contact your hardware vendor manufacturer for how to configure this 2 Turn onthe SNMP Trap Listener by accessing Configure gt Program Options gt Passive Monitor Listeners in the WhatsUp Professional console
5. is set at 65 degrees Fahrenheit Recently more devices have been added to the room and you are not sure the cooling unit can keep up with the additional heat sources You install a SNMP enabled temperature sensor in the server room and want to configure WhatsUp Professional to monitor and chart the temperature readings on the sensor Here are the steps to configure this type of monitor 1 Right click on the map you want to add the temperature sensor to 2 From the right mouse menu select New gt New Device 3 On the Add New Device dialog enter the IP address of the sensor Network Monitoring with SNMP 4 Click Advanced On the Device Discovery Properties dialog clear the active and performance monitor selections leaving only the Ping active monitor and enter the read community sting in the SNMP read box In this case the string is internal Click OK On the Add New Device dialog click OK WhatsUp Professional then scans the IP address using the SNMP community string to identify the device 8 When the scan is complete Device Properties for that device appears Select the Performance Monitors section 9 Inthe Performance j Monitors section click a aX New Name Temperature in F 10 Select SNMP Performance Monitor as the type and click OK Description Enables Custom Performance Monitor reports Performance counter Instance 11 On the Add Per
6. the OID This should leave 1 3 6 1 2 1 43 18 2 in the box 14 In the Payload box click Add to build the expressions that you want to match on for the passive monitor In this example you browsed the MIB Browser and found the OIDs for prtAlertCode 1 3 6 1 2 1 43 18 1 1 7 and prtSeverityLevel 1 3 6 1 2 1 43 18 1 1 2 Since you want to be alerted when an SNMP Trap payload contains the Towner Low message in the prtAlertCode table configure the Match On to show 1 3 6 1 2 1 43 18 1 1 7 1104 1104 is the code for toner low Since the character is used as a match expression you have to add a to the expression before each character You also want to know anytime a critical warning is sent from the printer so click Add again to add 1 3 6 1 2 1 43 18 1 1 2 3 We know from the description of the instance that 3 is the code for critical warning 15 Click OK to add the monitor to the Passive Monitor Library then click OK to record the selection of the new monitor type 16 On the Select Passive Monitor Type dialog click Next 17 In the Setup Actions for Passive Monitors dialog build a list of actions that you have created in the Action Library When a trap is received that match the payload these actions are fired Network Monitoring with SNMP 8
7. D IPSWITCH WhatsU Professional Network Monitoring with SNMP This paper describes how SNMP is used in WhatsUp Professional and provides specific examples on how to configure performance active and passive monitors lt P Introduction SNMP Simple Network Management Protocol lets you manage and monitor network performance troubleshoot problems with your network and better prepare for future network growth It is a flexible technology that can be used across operating systems and device types For example the SNMP agent on your router can provide information about the device s network configuration and operations such as the device s network interfaces routing tables networking traffic statistics This information called SNMP objects is stored ina standardized database called the Management Information Base MIB The structure of the MIB is defined in SMI Structure of Management Information files also called MIB files Each object in a MIB file has an OID Object Identifier associated with it An OID is a series of numbers separated by dots that represent where on the MIB tree the object is located The MIB file defines the SNMP objects that can be managed and the format for each object How WhatsUp Professional Uses SNMP In WhatsUp Professional there are three types of SNMP Monitors that you can assign to a device Passive Monitors Active Monitors and Performance Monitors The differences betwe
8. en these monitors come in the way they gather and report data e Active Active Monitors query network services installed on a device then wait on the response e Performance These monitors gather data about specific properties on a device that is then presented visibly in performance graphs e Passive These monitors listen for specific types of information sent from a associated to individual devices through device properties When configuring the monitors for devices you must provide the proper SNMP read community string or SNMP credential for the devices being monitored The read community string is a pass phrase that must be supplied to make a ox cone eo T connection to the SNMP device device f f f Device Properties Printer fd These monitors are stored in their G i a respective library and are mR e X SNMP Device Object 1 bed 13 6 14 1 11 SNMP community strings are configured and stored in the Credentials Library and chosen for a device in the credentials section of device properties If you do not supply the proper SNMP read community string or SNMP credential WhatsUp Professional cannot gather statistics or use the specified monitor for that device Network Monitoring with SNMP 2 Using SNMP in Device Discovery During device discovery you can scan your E Device Discovery Properties x network with SNMP SmartScan using the Selec enero umo in tne
9. formance 1 3 6 1 4 1 3854 1 2 2 1 16 1 14 Cou nter dialog enter Collection interval Timeout seconds Retries Sete Temperature in F in the 2 a 3 E 1 __ Help Name box 12 After reading through the User Manual for the sensor we know that the performance counter OID for the temperature on the device is 1 3 6 1 4 1 3854 1 2 2 1 16 1 14 Enter that number in the Performance counter box If you only have the full MIB file and do not have the specific OID for the performance counter you must import that MIB file and browse to the specific performance counter in the MIB To access the MIB Browser click the Browse button Once you select the proper counter the Performance counter box is filled in with the OID 13 In the Collection Interval box enter 5 to have WhatsUp Professional collect the data on the device every 5 minutes 14 Click OK to add the monitor and begin collecting data Network Monitoring with SNMP 5 It may take several polls to produce enough data to see anything interesting on your graph Once you have enough data you can view the performance reports by 1 Right click on the device icon and select Device Reports from the right mouse menu The Report View opens to the Device Reports list Select the Custom Performance Monitor report This report shows the data collected on the device since the monitor was activated Monitor Temperature in F v Medium Wide 700 x 300 x
10. monitors that F D Perf Monitor Lib X use SNMP to monitor specific types of aiat B performance data on your network Name Description New devices CPU Utilization Enables CPU Utilization reports it Disk Utilization Enables Disk Utilization reports ot e CPU Utilization Interface Utilization Enables Interface Utilization rep Copy Memory Utilization Enables Memory Utilization reports i r bi r z NMService Handle Count Enables Custom Perfomance M __Delete e Disk Utilization T NMService Private Bytes Enables Custom Performance M e Interface Bandwidth Utilization Me Ping Latency and Availability Enables Ping Availability reports e Memory Utilization E Printer Ink Level Printer Ink Level These monitors represent the majority of performance issues encountered in the ae day to day operation of networked a devices If you need to monitor other values reported on the device you must create a custom performance monitor for Performance Monitor Library that device The following example shows why you might need to create a custom performance monitor and how to create the monitor for the device Example It is important to keep your server room at a constant temperature If the temperature is too low or too high some of your hardware could be damaged or the room could be uncomfortable for those who must work in the room on a regular basis The thermostat on the cooling unit
11. ot have an active monitor of this type configured in the Active Monitor Library click Browse to access the Active Monitor Library In the Active Monitor Library click New Select SNMP Monitor as the type of monitor you want to create Network Monitoring with SNMP Edit SNMP Monitor X Name Temperature Range Description SNMP Monitor Object ID Instance 1 3 6 1 4 1 3854 1 2 2 1 16 1 14 0 ia Check type Range of Values z Advanced Low value a High value 7 700 Cance Help In the New SNMP Monitor dialog enter Temperature Range in the Name box Since we already created the performance monitor with this data we know that the performance counter OID for the temperature on the device is 1 3 6 1 4 1 3854 1 2 2 1 16 1 14 Enter that number in the Performance counter box In the Check type pull down menu select Range of Values We know from the performance monitor that the temperature sensor reports the temperature 60 F as 600 Therefore enter 600 in the Low value box as the lowest temperature that should be in the server room 10 Enter 700 as the High value box since anything over 70 F is considered too high for the room 11 Click OK to add the monitor to the Active Monitor Library then click OK to record the selection of the new monitor type 12 On the Select Active Monitor Type dialog click Next 13 Select Enable Polling
12. sean proce SNMP read community strings separated by Fa Orie rary rd x commas entered on the SNMP SmartScan eee Settings dialog to get a list of devices from an jam eats b SNMP enabled router Once the devices are taw nacre found the devices are scanned again with the ag E community strings The devices that are SNMP enabled are identified scanned for active and performance monitors their OIDs are recorded and a Credential entry is added to the device with the title Discovery A pma Credential T ply amea a maw 2 When adding a single device click the oie C Wingaws credentials Advanced button on the Add New Device a dialog to enter the SNMP read string for the device you are adding If correct the OID is recorded in device properties for that device and an SNMP credential is created for the string used Supported Versions of SNMP WhatsUp Professional supports SNMPv1 SNMPv2 and SNMPv3 SNMPv1 and v2 are very similar in the way the application communicates with a device A primary difference between the two is that you can request additional data packets from a v2 device SNMPv3 reports the same data as v2 but uses a different authentication scheme Instead of community strings v3 devices require a username and password to poll to the device In addition users can be configured on the v3 device to have the data packets encrypted before they are sent to a device requesting the SNMP information
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