topic Re: Copy Port in Switches, Hubs, and Modems

Copy Port

Clueless and in Charge — Mon, 12 Oct 2009 21:49:08 GMT

Morning

Can anyone tell me if it is possible and how to set up a "Copy Port" on a 8212zl Switch.

Thanks

Re: Copy Port

Jeff Carrell — Tue, 13 Oct 2009 02:18:57 GMT

if by "copy port" you want to send traffic going in and/or out of a specific port (or vlan group of ports) to a different port where an analyzer [such as wireshark] is connected, then here it is:

step 1: 'mirror 1 port b24' this is the port where wireshark is

step 2: 'interface a1 monitor all both mirror 1' this is the port of "interest" or the data you want to capture

see the following link for more details: http://cdn.procurve.com/training/Manuals/3500-5400-6200-6600-8200-MCG-Sept09-B-Monitor.pdf

hth...jeff

Re: Copy Port

Clueless and in Charge — Tue, 13 Oct 2009 03:09:48 GMT

awesome, thanks.

Now the fun part.....can I mirror multiple ports to one port? In other words I want to capture the traffic from 8 ports on my mirror port.

Cheers

Re: Copy Port

Mohammed Faiz — Tue, 13 Oct 2009 06:57:56 GMT

Yes, it's all in the link ;)

Re: Copy Port

Pieter 't Hart — Wed, 14 Oct 2009 06:30:44 GMT

beware on heavily loaded ports.
if you want to capture 8 ports both send and receive (full-duplex), you generate 16-times as much traffic on the analyzer port!
result will be that packets will be dropped!
(only to the analyzer port not real traffic).

So your captured-data may not represent the real data on the originating ports.

Re: Copy Port

Clueless and in Charge — Thu, 15 Oct 2009 02:43:24 GMT

Thanks guys, all working now.

Re: Copy Port

Clueless and in Charge — Thu, 15 Oct 2009 02:44:46 GMT

Answer given.