Using A Port Mirror For Analysis - SMC Networks 6724L2 - annexe 1 Management Manual

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EB NTERFACE

Using a Port Mirror for Analysis

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. When mirroring port
traffic, note that the target port must be included in the same VLAN
as the source port. (See "VLAN Table Configuration" on page 3-40.)
You can use the Mirror Configuration screen to mirror one or more
ports to the monitor port as shown below.
Parameter
Enable Port Mirror
TX Mirrored Port
RX Mirrored Port
Monitor Port
(drop down box)
Note: You can mirror multiple ports to a single port to view traffic
such as that crossing a port trunk. However, note that some
packets may be dropped for moderate to heavy loading.
3-24
Description
Enables or disables the mirror function.
The port whose transmitted traffic will be mirrored.
The port whose received traffic will be mirrored.
The port that will duplicate the traffic appearing on
the mirrored port.
TX Monitor Port is indicated in the upper drop-down
box. RX Monitor Port is indicated in the lower
drop-down box.