Huawei quidway s7700 - Checking the Configuration; Configuring the S7700 to Discard Packets with an All-0 MAC Address

unblocks the interface and starts detection. If MAC address flapping is detected again within 20
seconds, the system blocks the interface. This process repeats for a specified number of times.
If MAC address flapping persists, the interface is permanently blocked.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
reset loop-detect eth-loop vlan vlan-id { all | interface { interface-type
interface-number } | mac-address mac-address }
The specified interface or MAC address is unblocked.
Before using the reset loop-detect eth-loop command, run the display loop-detect eth-loop
command to check the blocked interface or MAC address.
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7.10.4 Checking the Configuration
After configuring MAC address flapping detection, use the following commands to verify the
configuration and view information about permanent interfaces and MAC addresses.
Procedure
Step 1 Run the display loop-detect eth-loop [ vlan vlan-id ] command to check information about
MAC address flapping detection on a VLAN.
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7.11 Configuring the S7700 to Discard Packets with an All-0
MAC Address
You can configure the S7700 to discard packets with an all-0 source or destination MAC address.
Applicable Environment
A faulty network device may send packets with an all-0 source or destination MAC address to
the S7700. You can configure the S7700 to discard such packets and send a trap to the network
management system (NMS). You can locate the faulty device according to the trap message.
Pre-configuration Tasks
l Powering on the S7700 and ensuring that it functions properly
Data Preparation
None.
Quidway S7700 Smart Routing Switch
Configuration Guide - Ethernet 7 MAC Address Table Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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