[mrtg] Tool for cross traffic analysis

[Prasad Kularatne]

Hi folks,
I am carrying out a research in finding out the sensitivity of regular 
traffic to iSCSI traffic in a LAN environment. This requires analysis of 
the traffic profiles of different TCP traffic types and their efffects on 
the queueing. 

I am looking for a tool which can graph different traffic types flowing 
off the same Switch port. Currently I am using the SPAN port with 
Ethereal, but it has some issues. 

Does any one of you know of a tool for out-of-band (should not affect the 
traffic flowing over the monitored port) monitoring of different TCP 
traffic over a LAN switch, preferably using SNMP counters. I want one 
second granularity.

I have a Cisco 2970 L3 switch and it does not support NetFlow. 

Appreciate your adivise. Thanks.

Good Luck!
Prasad
IBM in Sri Lanka

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