Cisco IOS SPAN and RSPAN

Hello AZM

First of all, it doesn’t really matter what IP addresses you configure on the packet sniffers. These devices will not be able to communicate with the network as their sole purpose is to sniff or detect any and all packets that are sent from the destination ports.

Secondly, the destination ports have all ingress traffic disabled, so even if they were configured with additional parameters, these are all overridden.

Essentially, no additional parameters are necessary on the destination ports.

You can find additional comprehensive information about the destination ports in a SPAN configuration at this Cisco documentation.

I hope this has been helpful!

Laz