Huawei quidway s7700 - Prohibiting MAC Address Flapping between Interfaces with the same Priority; Checking the Configuration

Step 2 Run:
interface interface-type interface-number
The interface view is displayed.
Step 3 Run:
mac-learning priority priority-id
The MAC address learning priority of the interface is set.
By default, the MAC address learning priority of an interface is 0. A greater priority value
indicates a higher MAC address learning priority.
----End
7.9.3 Prohibiting MAC Address Flapping Between Interfaces with
the Same Priority
Prohibiting MAC address flapping between interfaces with the same priority can improve
network security.
Context
When MAC address flapping between interfaces with the same priority is prohibited, these
interfaces cannot learn the same MAC addresses simultaneously. If an attacker uses the MAC
address of an unauthorized network device to connect to the S7700 after the network device is
powered off, the S7700 learns the bogus MAC address. After the network device is powered on,
the S7700 cannot learn the correct MAC address entry.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
undo mac-learning priority priority-id allow-flapping
MAC address flapping between the interfaces with a specified priority is prohibited.
By default, MAC address flapping between interfaces with the same priority is allowed.
----End
7.9.4 Checking the Configuration
Procedure
Step 1 Run the display current-configuration command to check the MAC address learning priorities
of interfaces.
----End
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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