RE: jitter testing

["Waltari Harri" <Harri.Waltari () deltamarin com>]

> -----Original Message-----
> From: listbounce () securityfocus com 
> [mailto:listbounce () securityfocus com] On Behalf Of markus sesser
> Sent: 27. helmikuuta 2008 15:43
> To: security-basics () securityfocus com
> Subject: jitter testing
>
> Hi,
>
> Do anybody know how to measure delay variation (jitter) in layer2/3 
> networks?
> I'm looking for system- or freeware-tools to do this (no 
> commercial tools!).


If You do have Cisco switches/routers (others may apply too) You can use
built-in measuring capabilities. For Cisco IOS-based switches look for
"rtr responder". You can read results from the IOS directly. 

To graph results You can use eg. Cacti. See http://www.cacti.net/ 
Cacti needs additional configuration to be able to collect & graph rtr
data. See http://forums.cacti.net/about4136-0-asc-0.html


-- 
Harri