Destination mirror port

You can specify physical ports or a trunk to mirror traffic. If you complete the rest of the configuration but do not specify a destination mirror port, the port-mirroring ACL is non-operational. This can be useful if you want to be able to mirror traffic by a set criteria on demand. With this configuration, you configure a destination mirror port whenever you want the port-mirroring ACL to become operational.

The following sections describe how to specify a destination port for a port or a trunk, as well as the special considerations required when mirroring traffic from a virtual interface.