Spanning a Port on a router?

Borman Bravo · ‎09-04-2008

Hi, is it possible to configure spanning (mirroring)in an ethernet port on a 7200 router? there is no option under the interface configuration, any ideas? thanks!

Collin Clark · ‎09-04-2008

Starting with IOS version 12.4(20)T, you can do a packet capture on the router itself. If you're running other code, I don't know of any way to do it.

http://www.cisco.com/en/US/prod/collateral/iosswrel/ps8802/ps6968/ps6441/product_bulletin_c25-409474.html#wp9002099

Hope that helps.

Marwan ALshawi · ‎09-04-2008

try to use netflow instead which can give u lots of statistics

Borman Bravo · ‎09-04-2008

Thanks, Netflow is great, I use it, but what I'm trying to do here is sent all spanned traffic to an IPS device.

Giuseppe Larosa · ‎09-04-2008

Hello Borman,

if you can introduce a LAN switch and do SPAN on it

You just need three free ports and a new vlan.

Hope to help

Giuseppe

Collin Clark · ‎09-04-2008

Or use IOS IPS.