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Port Span and Destination Port Query

Hi

I configure Port Span (on a cat3550)1 and Port 10 with Port 10 as a destination port . My question is does this make Port10 only as a listening port ? Is it possible to send any kind of traffic from port 10 to any port or or to port 1. As per the documentation I can see that the port only listens and doesn't paticipate even in spanning Tree.

Thanks

Atul

2 REPLIES

Re: Port Span and Destination Port Query

For IOS switches:

You are correct, they only listen.

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

For Cat OS switches:

In software release 4.2 and later, incoming traffic on the SPAN destination port is disabled by default. You can enable it using the inpkts enable keywords. However, while the port receives traffic for its assigned VLAN, it does not participate in spanning tree for that VLAN. To avoid creating spanning tree loops with incoming traffic enabled, assign the SPAN destination port to an unused VLAN.

Community Member

Re: Port Span and Destination Port Query

Steve

Thanks for your help.

Atul

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