Re: jitter testing

[markus sesser <markus () sesser eu>]

hi,
thanks for your answer!
sorry for my late response...

Karsten Iwen schrieb:
> > i had problems on a 3750 with the command "show policy-map interface"
> > there was a traffic-shaping configured - but the counters didn't 
> > change the value (always zero) - with different s/w versions
> > ideas here?
>
> that's not the way it works on a Catalyst. QoS on Cisco Switches is 
> completely different than QoS on Cisco Routers.
>
> http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_44_se/configuration/guide/swqos.html 

yes, but this should be the command to see dropped packets in a policy 
map - isn't it?
so i can compare the frame-loss with my ping-flood results.
this problem has NO link to the original jitter question.


> > if i want to get one-way jitter, can i do simply rtt/2 ?
>
> no, perhaps the jitter is only in one direction?
>
> http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_44_se/configuration/guide/swipsla.html 
yes, in the world of cisco
is there any international standard, wich says jitter is ONLY one-way?
i'ts true, in voIP testing, one-way tests should be the tests of the choice


thanks,
markus