Extreme Networks ExtremeWare XOS Command Reference Manual page 351

show mirroring
BlackDiamond 10K switch only. Following is sample output from this command on the BlackDiamond
10K switch that is configured for port-based mirroring:
Mirror port: 1:5 is up tagged
Number of Mirroring filters: 1
Mirror Port configuration:
Port number 2:1 in all vlans
History
This command was first available in ExtremeWare XOS 10.1.
Platform Availability
This command is available on all platforms.
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ExtremeWare XOS 11.3 Command Reference