Port Mirroring Configuration; Introduction To Port Mirroring; Implementing Port Mirroring; Configuring Port Mirroring - 3Com Baseline 2928 PWR Plus User Manual

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Port Mirroring Configuration

Introduction to Port Mirroring

Port mirroring is to copy the packets passing through a port (called a mirroring port) to another port
(called the monitor port) connected with a monitoring device for packet analysis.
You can select to port-mirror inbound, outbound, or bidirectional traffic on a port as needed.

Implementing Port Mirroring

Port mirroring is implemented through local port mirroring groups. The following subsections describe
how local port mirroring is implemented.
Local port mirroring
In local port mirroring, all packets (including protocol and data packets) passing through a port can be
mirrored. Local port mirroring is implemented through a local mirroring group.
As shown in Figure
monitoring device to analyze.
Figure 1-1 Local port mirroring implementation
How the device processes packets
Traffic
mirrored to
Mirroring port
Mirroring port
PC

Configuring Port Mirroring

Configuration Task List

Configuring local port mirroring
To configure local port mirroring, you must create a local mirroring group and then specify the mirroring
ports and monitor port for the group.
1-1, packets on the mirroring port are mirrored to the monitor port for the data
Monitor port
Monitor port
Data monitoring device
1-1