How many sources can be supported by monitor session in Catalyst 4900 platform

[3alee]

Hello

For the command "monitor session 1 source" in Cat4900 (e.g. 4948), how many source interfaces can be supported per monitor session?

Thanks!

[mgalazka]

According to the Cat4500 configuration guide, the number of sources is only limited by the total number of ports or VLANs on the switch:

http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.2/54sg/configuration/guide/span.html#wp1043675

The switch supports any number of source ports (up to the maximum number of available ports on the switch) and any number of source VLANs.

Keep in mind if you oversubscribe the source to destination, there is a chance you will see overruns on the SPAN destination interface.

Hope this helps,

Matt