Monitor Jitter with IP SLA and MIB

IP SLA within Cisco IOS provide ability to monitor diffrent parameters

in this article i will provide example for monitoring jitter.
in order to check jitter between on a path between two routers,
one router is setup as pooler this router will send udp packets for testing the path
and the second router will act as a server and will respond to thoose udp packets and
will calculate and report the jittering in the path

for more information visit cisco website

Now for configuration
The configuration on the router

ip sla 110
udp-jitter <x.x.x.x> 2000
frequency 30
ip sla schedule 110 life forever start-time now

the configuration on the responder

ip sla responder

as soon as you finish with the configuration give the system 5 minutes
to start pooling SLA, then you can see the test results

Router#show ip sla statistics 110

Round Trip Time (RTT) for Index 110
Type of operation: jitter
Latest RTT: 529 ms
Latest operation start time: 11:29:25.242 MOZ Sat Mar 10 2012
Latest operation return code: OK
RTT Values
Number Of RTT: 10
RTT Min/Avg/Max: 529/529/531 ms
Latency one-way time milliseconds
Number of Latency one-way Samples: 10
Source to Destination Latency one way Min/Avg/Max: 337/337/338 ms
Destination to Source Latency one way Min/Avg/Max: 192/192/193 ms
Jitter time milliseconds
Number of SD Jitter Samples: 9
Number of DS Jitter Samples: 9
Source to Destination Jitter Min/Avg/Max: 0/1/1 ms
Destination to Source Jitter Min/Avg/Max: 0/1/1 ms
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
Voice Score Values
Calculated Planning Impairment Factor (ICPIF): 0
Mean Opinion Score (MOS): 0
Number of successes: 93
Number of failures: 0
Operation time to live: Forever

Other option i have found usefull is to monitor the IP SLA with MIB application such

Here are some MIB nodes to pool the values from router and show them on Cacti

Avg Max Avg

7.110 Max
47.110 Avg

.26 Packet Lost Source to Destination
.27 Packet Lost Destination To Source


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