Web Management Guide

Table Of Contents
Chapter 4
| Interface Configuration
Configuring Local Port Mirroring
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Configuring Local Port Mirroring
Use the Interface > Port > Mirror page to 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.
Figure 59: Configuring Local Port Mirroring
Command Usage
Traffic can be mirrored from one or more source ports to a destination port on
the same switch (local port mirroring as described in this section), or from one
or more source ports on remote switches to a destination port on this switch
(remote port mirroring as described in Configuring Remote Port Mirroring” on
page 139).
Monitor port speed should match or exceed source port speed, otherwise
traffic may be dropped from the monitor port.
When traffic matches the rules for both port mirroring, and for mirroring of
VLAN traffic or packets based on a MAC address, the matching packets will be
sent to one of them based on configuration order.
The destination port cannot be a trunk or trunk member port.
Note that Spanning Tree BPDU packets are not mirrored to the target port.
Parameters
These parameters are displayed:
Source Port – The port whose traffic will be monitored.
Target Port – The port that will mirror the traffic on the source port.
Type – Allows you to select which traffic to mirror to the target port, Rx
(receive), Tx (transmit), or Both. (Default: Both)
Web Interface
To configure a local mirror session:
1. Click Interface, Port, Mirror.
2. Select Add from the Action List.
Source
port(s)
Single
target
port