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13.3 Configuration Examples
This section provides an example for configuring the loop detection function.
13.3.1 Example for Configuring Loop Detection
Networking Requirements
As shown in Figure 13-2, when packets sent from a port are sent back to the local device through
another port of the device, a loop exists on the device. Loops may cause broadcast storms. The
loop detection function is used to detect loops on ports of a device.
Figure 13-2 Networking diagram of loop detection application
Configuration Roadmap
The configuration roadmap is as follows:
1. Enable loop detection globally.
2. Enable loop detection in a VLAN.
3. Enable loop detection control on an interface.
4. Set the loop detection interval on the interface.
5. Set the recovery time of a blocked interface.
Data Preparation
To complete the configuration, you need the following data:
l ID of the VLAN where loop detection is enabled
Quidway S7700 Smart Routing Switch
Configuration Guide - Ethernet 13 Loop Detection Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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