There is simple way to test your channel on jitter with ip sla in Cisco IOS.
This test is ideal for testing Internet-connection in the back-office or something like that.
If you need check jitter in the voice channel or some tcp-ip server-client connections,
you need more complicated decision.
– Cacti with official template “Cisco router”
– router with IOS that’s support IP SLA (all modern IOS and few IOS earlier 12.3)
First, configure your router with commands:
ip sla monitor 20
type echo protocol ipIcmpEcho X.X.X.X source-ipaddr Y.Y.Y.Y
ip sla monitor schedule 20 life forever start-time now
Where X.X.X.X it is address of your ISP and Y.Y.Y.Y is yours.
Then update data queries for this router in the your Cacti:
Then create new graph with such graph type:
You can see this after some time:
By the way, I hope you WILL NOT SEE such picture, because it was awful jitter 😉
The best post about IP SLA in the Russian is http://www.securitylab.ru/analytics/309557.php
You could find a lot of information about IP SLA if you search.
Have a nice ping!