Mirroring Configuration; Mirroring Overview; Local Port Mirroring - 3Com 4200G 12-Port Configuration Manual

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Mirroring Configuration

When configuring mirroring, go to these sections for information you are interested in:

Mirroring Overview

Mirroring Configuration
Displaying Port Mirroring
Mirroring Configuration Examples
Mirroring Overview
Mirroring is to duplicate packets from a port to another port connected with a data
monitoring device for network monitoring and diagnosis.
The port where packets are duplicated is called the source mirroring port or monitored port
and the port to which duplicated packets are sent is called the destination mirroring port or
the monitor port, as shown in the following figure.
Figure 1-1 Mirroring
The Switch 4200G series support five two types of port mirroring:

Local Port Mirroring

Remote Port Mirroring
They are described in the following sections.
1.1.1 Local Port Mirroring
In local port mirroring, packets passing through one or more source ports of a device are
copied to the destination port on the same device for packet analysis and monitoring. In
this case, the source ports and the destination port must be located on the same device.
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