How to capture Catalyst traffic

[carlostrapiello]

Hello friends.

I want to capture all traffic in my net. I have a 5 switch stack of Cisco 3750 Catalyst.

How can I do it?.

Thanks.

[m.sir]

You can use SPAN session - traffic from all ports (VLANs) can be mirrored to one port

check following link

http://www.cisco.com/warp/public/473/41.html

M.

[carlostrapiello]

Very good link but I want another solution more easy for me if it can be possible.

[nhabib]

Since these are switches, you will have to span the ports in order to capture the traffic.

[carlostrapiello]

I discovered that I can configure span ports with Cisco Network Assistant

I open a span session in a port of one of my stack switches.

What I must to configure encapsulation: native o replicate?. Must I to choose any vlan?

Wht I must to do after?.