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Roving Analysis

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Mar 25, 2002
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I am hoping to implement the roving analysis feature of a 3Com 3300 switch for network monitoring. It seems pretty basic in principle. My main question is, how does IP Address assignment work in the scenario? Does the analysis port require the same IP as the monitoring port, different IP address, or does it matter? Documentation is vague on this.

Thanks.
 
Roving analysis is principally used for ethernet packet capture and analysis.

If you want to give your analyser an IP address it should be one from the same address space mapped to the VLAN of the port being monitored. However the analyser will pick up all packets sent out from the port it is connected to, which is a mirror of the traffic of the port being monitored, it will thus pick up any IP traffic, with a source or destination of any IP address in any IP subnet. So in principle it does not matter.

I hope this helps.
 
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