Monitor WAN Link Performance

[harsha senaratna]

hi all,

It is required to monitor newly placed WAN link performance . Following details should be obtain. How can I confogure my cisco 1841 router to obtain the following informations.

1) Errors

2) Jitter

Your expertise knowledge highly appriciate in this matter.

Regards,

Harsha

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[jarandmoen]

There are many ways and tools to do this, but what about using cisco command "ip sla", it can measure jitter and errors in several forms. http://www.cisco.com/en/US/technologies/tk648/tk362/tk920/technologies_white_paper09186a00802d5efe.html

[sean_evershed]

Hi,

For errors you can configure SNMP and pump the data to one of the free network monitoring tools like Catci.

For Jitter use IP SLA. See below. It can also be used to measure the MOS score of the link.

http://www.cisco.com/en/US/docs/ios/12_4/ip_sla/configuration/guide/hsvoipj.html

Don't forget to rate posts that are helpful.

[harsha senaratna]

hi all,

Thanks a lot for your responses. My requirement is this. I want to monitor the jitter in my WAN Link. Because of that I configured the following mentioned ip sla in my branch router. This should graph in my NMS (opennms server) under Jitter graphs. But I can successfully view the packet loss graphs.

Server ---> PE2---->PE1---->Branch Router

Here's my Branch cofiguration :

ip sla monitor

ip sla 1
udp-jitter   8080 source-ip

owner admin

frequency 30

ip sla schedule 1 life forever start-time now

IPSLAs Latest Operation Statistics

IPSLA operation id: 1
Type of operation: udp-jitter
        Latest RTT: NoConnection/Busy/Timeout
Latest operation start time: .09:54:41.672 UTC Wed Apr 4 2012
Latest operation return code: No connection
RTT Values:
        Number Of RTT: 0                RTT Min/Avg/Max: 0/0/0 milliseconds
Latency one-way time:
        Number of Latency one-way Samples: 0
        Source to Destination Latency one way Min/Avg/Max: 0/0/0 milliseconds
        Destination to Source Latency one way Min/Avg/Max: 0/0/0 milliseconds
Jitter Time:
        Number of SD Jitter Samples: 0
        Number of DS Jitter Samples: 0
        Source to Destination Jitter Min/Avg/Max: 0/0/0 milliseconds
        Destination to Source Jitter Min/Avg/Max: 0/0/0 milliseconds
Packet Loss Values:
        Loss Source to Destination: 0           Loss Destination to Source: 0
        Out Of Sequence: 0      Tail Drop: 0
        Packet Late Arrival: 0  Packet Skipped: 0

I didnt receove any data.

Please help me to solve this issue.

Thanks

[jarandmoen]

As Sean mention, use Cacti (free) install the Jitter templates as described here http://forums.cacti.net/about19542.html together with IP SLA.

Here is a walkthrough http://gregsowell.com/?p=1333

Sent from Cisco Technical Support iPad App

[Vasileios Bouloukos MSc, ITIL, CCIE]

Hi,

For the jitter measurments you have to configure the ip sla responder

Have you done it?