SPAN multiple destination ports on Cisco IOS device

It is possible to configure multiple destination (monitoring) ports within a SPAN session on most Cisco IOS platforms. When specifying the destination port, it is possible to indicate a series or range of interfaces using a command similar to the following:

monitor session 1 destination interface gigabitethernet0/0 - 1

This will cause Gi0/0 and Gi0/1 to become destination ports for this SPAN session.

Platforms that don't allow multiple destination ports will not allow this range syntax.

Note that a single destination port cannot belong to multiple SPAN sessions.