[c-nsp] IPSLAs with OpenNMS or Other?

[Jeff Wojciechowski]

Hi All:

Anyone using IPSLAs with OpenNMS or any other favorite tool?

I just set up a small test network and am thinking about adding this to a couple of our WAN routers closest to our PBXs and setting up remote switches that VoIP phones are on to monitor jitter, etc of our VoIP traffic.

Any thoughts on:


1)      Is it best to locate the IPSLA monitor on the switch near the phone system or on the WAN edge router (right now we even have anything resembling congestion is on our WAN links)?

2)      Any gotchas that I need to look out for? (False positives on bad performance, etc - for a start I plan on marking the test traffic with the same ToS bit that our VoIP will be marked so it gets the same priority)

3)      This should be simple but whats the minimum IOS flavor required to configure the IPSLA monitor (2811 router if I decide to make the WAN router the IPSLA monitor or 3560 switch if I decide to locate monitor to the switch the PBX is on) (I cant figure out the IOS feature browser to save my life - sorry I am a N00b)

4)      Suggestion on other tools other than OpenNMS to monitor IPSLA stats?

5)      Suggested intervals, packet sizes, anything else of each test?

Thanks all,

Jeff