Specifying the Destination Mirror Port for Physical Ports

When you want traffic that has been selected by ACL-based inbound mirroring to be mirrored, you must configure a destination mirror port. This configuration is performed from the interface configuration mode of the port with the traffic you are mirroring.

In the following example, ACL mirroring traffic from port 1/1/1 is mirrored to port 1/1/3.

device(config)# interface ethernet 1/1/1
device(config-if-e10000-1/1)# acl-mirror-port ethernet 1/1/3

In a single PP device, if the same user ACL is applied on multiple ports and acl-mirror-port is applied on one port, the mirroring will be done on all ports where the same user ACL is applied.

In the case of a dual-PP device, if the user ACL is applied on port of both PP and acl-mirror-port is applied on one port of one PP, then mirroring will be done on only one PP.

If the same ACL is applied on multiple interfaces, it is recommended to configure the same ACL-mirror-port on all ports on interfaces where the user ACL is applied.