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AR Router Troubleshooting Guide

This Product Documentation provides guidance for maintaining AR Enterprise Router, covering common information collection and fault diagnostic commands, typical fault troubleshooting guide, and troubleshooting.
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How Do I Change the MAC Address of a WAN Interface?

How Do I Change the MAC Address of a WAN Interface?

Procedure

To prevent a loop or traffic forwarding failure caused by a MAC address conflict between a WAN interface and another interface, you can change the MAC address of the WAN interface.

<Huawei> system-view
[Huawei] interface gigabitethernet 1/0/0
[Huawei-GigabitEthernet1/0/0] mac-address 0001-2345-abcd

More Information

Differences Between System and Interface MAC Addresses
  • System MAC address: is the MAC address of the router.

  • Interface MAC address: is the MAC address of a Layer 2 or Layer 3 Ethernet interface.
    • A Layer 3 interface has a MAC address that can be directly changed.

    • All Layer 2 interfaces on the router use the system MAC address as their MAC addresses. To change the MAC address of a Layer 2 interface, you can only change the system MAC address.

Changing the System MAC Address

Run the set system-mac command in the diagnostic view to change the system MAC address.
  • Change the default system MAC address.

    <Huawei> system-view
    [Huawei] diagnose
    [Huawei-diagnose] set system-mac default 00e0-0987-7890
  • Change the current system MAC address.

    <Huawei> system-view
    [Huawei] diagnose
    [Huawei-diagnose] set system-mac current 00e0-0987-7890
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Updated: 2019-08-09

Document ID: EDOC1000079719

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