Huawei AR3200 Series - Unblocking an Interface or a MAC Address; Checking the Configuration

A VLAN is created and the VLAN view is displayed.
Step 3 Run:
loop-detect eth-loop { [ block-mac ] block-time block-time retry-times retry-times
| alarm-only }
MAC address flapping detection is configured in the VLAN.
When the AR3200 detects MAC address flapping in the VLAN, it performs either of the
following actions:
l Blocks the interface or MAC address. When the block-mac keyword is used in the command,
the router does not block the interface but blocks the traffic from the flapping MAC address.
l Sends a trap to the NMS.
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6.6.3 Unblocking an Interface or a MAC Address
Context
After an interface or a MAC address is permanently blocked because of MAC address flapping,
you must run the reset loop-detect eth-loop command in the corresponding VLAN if you want
to restore the interface or MAC address.
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 interfaces or MAC addresses.
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6.6.4 Checking the Configuration
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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Huawei AR3200 Series Enterprise Routers
Configuration Guide - LAN 6 MAC Address Table Configuration
Issue 02 (2012-03-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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