Chapter 5: Port Mirroring
Port Mirroring Overview
The port mirroring feature allows you to unobtrusively monitor the ingress and egress traffic on a port on the switch by having the traffic copied to another switch port. By connecting a network analyzer to the port where the traffic is being copied to, you can monitor the traffic on the other port without impacting its performance or speed.
The port whose traffic you want to mirror is called the mirrored port. The port where the traffic will be copied to is called the mirroring or target port.
Observe the following guidelines when using this feature:
You can configure only one target port at a time.
The mirrored and mirroring ports must be on the same switch.
This feature copies both the ingress and egress traffic of the mirrored port.
The mirroring port (target port) cannot be used for normal Ethernet switching and cannot be part of a trunk.
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