What are the prerequisites for adding an IPSLA(WAN RTT, VOIP) monitor in OpManager ?


When you want to test a link from your office to another location, you need a Cisco router ( IOS version 12.4 or later ) at each end.


Steps to set up the monitor

Using OpManager, you can now monitor the voice and video quality of a 'call path'. Call path is the WAN link between the router in your main office and the one in the branch office that you want to monitor.

Step 1: Enable Add (/discover) the router in your LAN to OpManager. And make sure the SNMP read and write community are configured properly, for that router.

Step 2: Enable SLA responder on the destination device you wish to monitor, Steps are detailed below.

  • Open a CLI session on the destination router and enable the EXEC mode as follows:

Router › enable

  • Start the global configuration mode:

Router#configure terminal

  • Enable the IP SLA responder:

Router(config)#ip sla responder
Router(config)#ip sla monitor responder>
(Note: Enter any one of the command to enable IP SLA responder as it varies according to the IOS versions.)

Repeat the above steps for all the destination routers on which you want to monitor VoIP performance.

Step 3: Creating the VoIP monitor:

  • Go to Inventory-> Select IPSLA from three line menu ->Select VoIP -> Click on + (add symbol) at the top right corner
  • Enter a name for the monitor
  • Select the source router from the list of routers discovered in OpManager, and select the relevant interface.
  • Specify the destination router either by using the 'Search' option to pick from the discovered routers, or use the 'Add' option to specify the IP address of the destination router and submit the details.
  • You will see the summary of the monitor you are about to configure. Now click 'Save' to submit the details to the device. This will take a few seconds to configure. Refresh the page after few seconds to see the new monitor. The data will be collected every hour, from the time you have configured.



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