Data Preparation
To configure local port mirroring, you need the following data.
No. Data
1 Type and number of the observing interface.
2 Type and number of the mirrored interface.
3 Direction to which packets are mirrored.
4.3.2 Configuring a Local Observing Interface
The local observing interface is used to export the packets copied from the mirrored interface.
Context
After an interface is configured as the observing interface, other configurations are not
recommended on the interface. Otherwise, the following situations may occur:
l If other service traffic exists on the observing interface in addition to mirrored packets, the
packet source cannot be differentiated.
l If congestion occurs on the observing interface, mirrored packets may be discarded because
the priority of mirrored is low.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
observe-port interface interface-type interface-number
A local observing interface is configured.
NOTE
On the AR150/200, only one observing interface can be configured.
Other configurations are not recommended on the observing interface; otherwise, non-mirrored packets
may be forwarded through the observing interface.
----End
4.3.3 Configuring a Local Mirrored Interface
All the packets passing through the local mirrored interface are copied to the observing interface.
Context
If you want to configure an Eth-Trunk as a mirrored interface, run the interface eth-trunk trunk-
id command to create an Eth-Trunk first. Pay attention to the following points when you use an
Eth-Trunk as a mirrored interface:
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.
62
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