Introduction To Mirroring; Mirroring Features Supported By The S9300 - Huawei Quidway S9300 Configuration Manual

Quidway S9300 Terabit Routing Switch
Configuration Guide - Device Management

6.1 Introduction to Mirroring

This section describes the basic concepts of port mirroring and traffic mirroring.
Mirroring refers to a process in which traffic is copied to a destination for analysis so that you
can detect and troubleshoot faults on a network. Mirroring is classified into port mirroring and
traffic mirroring. In port mirroring and traffic mirroring, observing ports and mirrored ports are
used.
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6.2 Mirroring Features Supported by the S9300

This section describes the mirroring features supported by the S9300.
Port Mirroring
For port mirroring, the S9300 copies the packets passing through a mirroring interface and then
sends the packets to a specified observing port for analysis and monitoring. During port
mirroring, all the packets passing through a mirroring interface are copied to an observing port.
See
Figure 6-1 Networking diagram of port mirroring
Mirroring interface
Port mirroring is classified into local port mirroring and remote port mirroring:
Issue 03 (2011-12-29)
Observing port
An observing port is connected to a monitoring host. It is used to export the traffic copied
from a mirrored port or a traffic mirrored port.
Mirrored port
A mirrored port is the interface to be observed. All the packets passing the mirroring
interface or the packets matching traffic classification rules are copied to the observing
port.
Figure 6-1.
Switch
Interface
Flows of packets
Copied flows of packets
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Mirroing interface
Observing
interface
Monitoring host
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