Configuring Port Mirroring
You can mirror traffic from any source port to a target port for real-time
analysis. You can then attach a logic analyzer or RMON probe to the target
port and study the traffic crossing the source port in a completely
unobtrusive manner.
Command Usage
> The mirror port and monitor port speeds must match, otherwise traffic may be
dropped from the monitor port.
> The switch supports only one port mirror session.
> The source and target port have to be either both in the port group of 1 to 12 or
both in the port group of 13 to 24.
Web – Click Port/Mirror. Specify the source port, the traffic type to be mirrored,
and the target port, then click “Add.”
CLI – Use the interface command to select the target port, then use the port
monitor command to specify the source port. Note that default mirroring under
the CLI is for both received and transmitted packets.
Console(config)#interface ethernet 1/10 1
3-68
Console(config-if)#port monitor ethernet 1/11 1
3-129
Console(config-if)#
48
