SNR S2989G-48TX-RPS — настройка функции зеркалирования в сетевых устройствах [468/553]

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S2989G-24TX Operation Manual

Chapter 8 Debugging and Diagnosis Configuration

8-21

8.6

Mirror

8.6.1

Introduction to Mirror

Mirror functions include port mirror function, flow mirror function.

Port mirror refers to the duplication of data frames sent/received on a port to another

port. The duplicated port is referred to as mirror source port and the duplicating port is

referred to as mirror destination port. A protocol analyzer (such as Sniffer) or a RMON

monitor will be connected at mirror destination port to monitor and manage the network,

and diagnose the problems in the network.

Flow mirror function means that the switch exactly copies the data frames received or

by the specified rule of a port to another port. The flow mirror will take effect only the

specified rule is permit.

A chassis switch supports at most 4 mirror destination ports, each boardcard allows a

source or destination port of a mirror session. At present, each box switch can set many

mirror sessions. There is no limitation on mirror source ports, one port or several ports is

allowed. When there are more than one source ports, they can be in the same VLAN or in

different VLAN. The source port and destination port can be in different VLAN.

8.6.2

Mirror Configuration Task List

1. Specify mirror destination port

2. Specify mirror source port

3. Specify flow mirror source

1. Specify mirror destination port

Command

Explanation

Global mode

monitor session <session> destination

interface <interface-number>

no monitor session <session>

destination interface

<interface-number>

Specifies mirror destination port; the no

command deletes mirror destination source

port.

2. Specify mirror source port

Command

Explanation