Figure 4-4 Networking diagram of remote flow mirroring
RouterA
Monitoring
device
Packet flows
Flow mirrored
interface
Copied packet flows
IP network
Flow mirrored interface
RouterB
Host A
Remote Mirroring Specifications
Only one observing server can be configured, and there must be a reachable route from the
mirrored interfaces to the observing server. The packets on multiple mirrored interfaces can be
mirrored to one observing server.
4.3 Configuring Local Port Mirroring
To monitor and analyze all the packets passing through the mirrored interface that is located on
the same AR150/200 as the observing interface, configure local port mirroring on the
AR150/200.
4.3.1 Establishing the Configuration Task
Before configuring local port mirroring, familiarize yourself with the applicable environment,
complete the pre-configuration tasks, and obtain the required data. This will help you complete
the configuration task quickly and accurately.
Applicable Environment
An intranet has high requirements for information security and privacy protection. You can
configure mirroring on an interface to monitor incoming and outgoing data packets. The
management server that has the monitoring software installed can capture these packets for
analysis and fault location.
To monitor and analyze all the packets passing through the mirrored interface that is located on
the same AR150/200 as the observing interface, configure local port mirroring on the
AR150/200.
Pre-configuration Tasks
Ensuring that the link layer protocol status of interfaces is Up
Huawei AR150&200 Series Enterprise Routers
Configuration Guide - Device Management 4 Mirroring Configuration
Issue 02 (2012-03-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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