Specifying the Destination Mirror Port for LAG Ports

You can mirror the traffic that has been selected by ACL-based inbound mirroring from a LAG by configuring a destination port for the LAG virtual interface within the LAG configuration, as shown in the following example. 

device(config)# lag blue static id 1
device(config-lag-blue)# ports ethernet 1/1/1 to 1/1/4
device(config)# interface lag 1
device(config-lag-if-lg1)# acl-mirror-port ethernet 1/1/8

Using this configuration, all LAG traffic is mirrored to port 1/1/8.

Limitations when Configuring ACL-based Mirroring with LAGs

If an individual port is configured for ACL-based mirroring, you cannot add it to a LAG. If you try to add a port that is configured for ACL-based mirroring to a LAG, the following message appears. 

Note - ACL-mirror-port configuration is removed from port 2 in new trunk.
Note: If you want to add a port configured for ACL-based mirroring to a LAG, you must first remove the acl-mirror-port command from the port configuration. You can then add the port to a LAG that can then be configured for ACL-based LAG mirroring.

Behavior of ACL-based Mirroring when Deleting LAGs

If you delete a LAG, the ACL-based mirroring configuration applied on the LAG interface also will get removed.

Parent topic: Destination mirror port