spanning a port to a different VLAN

[axfalk]

We need to span a port on a Cat-6506 switch. Can a source port and a desination port be on two different VLANs or do they have to be on the same Vlan?

thanks.

[ehirsel]

You should be able to keep the ports on seperate vlans and still run the span session. I am able to do this with the cat switches at org. that I work for without any issues.

One side note: If the span tool is actually participating in the sessions, that is it acts as a client as well as a protocol analyzer, then I would keep the source and dest ports in the same vlan.

Let me know if you need any more help.

[axfalk]

Thanks for your response.The customer is also asking to enable the inpkts on the destination port and I have read it could cause a bridging loop because no STP is running on the desitation SPAN port. How risky is to enable this feature?

thanks again.

[david.bradley]

You should be OK if you're carefull what you connect to the port. Keep the connection to a single host and you're fine.