Port mirroring cisco 2651

[glmonarch]

Hello! I have cisco 2651. It contains two FastEthernet interfaces: Fa0/0, Fa0/1.

Fa0/1 has an ip address. Fa0/0 hasn't an ip address.

I need to create monitor session from source Fa0/1 to destination Fa0/0. Then i want to connect my notebook to Fa0/0 to analyze some traffic from port Fa0/1.

I make theese commands:

Router(config)#monitor session 1 source interface FastEthernet0/1

% Invalid input detected at '^' marker.                     ^

Router(config)#monitor session 1 source interface FastEthernet0/1:?

<0-0>  FastEthernet interface number

On other switch it command has worked well. I don't understand how I can to create a monitor session for Fa0/1?

Thx for any ideas.

[cadet alain]

Hi,

These are L3 ethernet ports so port-mirroring won't work, you can use Embedded Packet Capture: http://yurisk.info/2010/02/01/capture-packets-at-ios-cisco-router-or-finally-we-have-a-sniffer/

Regards

Alain

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[glmonarch]

Thx a lot!