In V2R2 and earlier versions, the switch supports dual-active detection (DAD); in the versions later than V2R2, the switch supports multi-active detection (MAD).
Configure MAD on directly connected interfaces: V2R2 and earlier versions: Run the following commands on the directly connected interfaces: [HUAWEI] interface gigabitethernet 0/0/5 [HUAWEI-GigabitEthernet0/0/5] dual-active detect mode direct In V2R2 and later versions: Run the following commands on the directly connected interfaces:
[HUAWEI] interface gigabitethernet 0/0/5 [HUAWEI-GigabitEthernet0/0/5] mad detect mode direct
Configure DAD in relay mode: V2R2 and earlier versions: (1) In a stack, configure DAD in relay mode on an inter-chassis Eth-Trunk: [HUAWEI] interface eth-trunk 1 [HUAWEI-Eth-Trunk1] dual-active detect mode relay [HUAWEI-Eth-Trunk1] quit [HUAWEI] interface gigabitethernet 0/0/5 [HUAWEI-GigabitEthernet0/0/5] eth-trunk 1 [HUAWEI-GigabitEthernet0/0/5] quit [HUAWEI] interface gigabitethernet 1/0/5 [HUAWEI-GigabitEthernet1/0/5] eth-trunk 1 (2) Configure Eth-Trunk relay on the relay agent: [HUAWEI] interface eth-trunk 1 [HUAWEI-Eth-Trunk1] dual-active relay [HUAWEI-Eth-Trunk1] quit [HUAWEI] interface gigabitethernet 0/0/1 [HUAWEI-GigabitEthernet0/0/1] eth-trunk 1 [HUAWEI-GigabitEthernet0/0/1] quit [HUAWEI] interface gigabitethernet 0/0/2 [HUAWEI-GigabitEthernet0/0/2] eth-trunk 1
In the versions later than V2R2: (1) In a stack, configure MAD in relay mode on an inter-chassis Eth-Trunk: [HUAWEI] interface eth-trunk 1 [HUAWEI-Eth-Trunk1] mad detect mode relay [HUAWEI-Eth-Trunk1] quit [HUAWEI] interface gigabitethernet 0/0/5 [HUAWEI-GigabitEthernet0/0/5] eth-trunk 1 [HUAWEI-GigabitEthernet0/0/5] quit [HUAWEI] interface gigabitethernet 1/0/5 [HUAWEI-GigabitEthernet1/0/5] eth-trunk 1 (2) Configure Eth-Trunk relay on the relay agent: [HUAWEI] interface eth-trunk 1 [HUAWEI-Eth-Trunk1] mad relay [HUAWEI-Eth-Trunk1] quit [HUAWEI] interface gigabitethernet 0/0/1 [HUAWEI-GigabitEthernet0/0/1] eth-trunk 1 [HUAWEI-GigabitEthernet0/0/1] quit [HUAWEI] interface gigabitethernet 0/0/2 [HUAWEI-GigabitEthernet0/0/2] eth-trunk 1
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