Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
New Member

Port monitor over multiple VLANS

I have an IDS box (SUN) that need to monitor activity on multiple vlans on a 3550 switch - which also is trunked to a 3524 which will also need IDS monitoring - will a port monitor work and span all of the vlans to capture the traffic?

1 REPLY
New Member

Re: Port monitor over multiple VLANS

According to

http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12111ea1/3550scg/swspan.htm

you should be able to SPAN a trunk port on the 3550.

ISL or 802.1Q tags are removed on the ingress port, and at the destination port they're tagged if configured and otherwise transmitted in native format.

234
Views
4
Helpful
1
Replies
CreatePlease to create content