链路聚合（LACP）

1、手工链路聚合

<HUAWEI> system-view
[HUAWEI] sysname SwitchA
[SwitchA] interface eth-trunk 1   //创建ID为1的Eth-Trunk接口
[SwitchA-Eth-Trunk1] trunkport gigabitethernet 0/0/1 to 0/0/3   //在Eth-Trunk1接口中加入GE0/0/1到GE0/0/3三个成员接口
[SwitchA-Eth-Trunk1] port link-type trunk   //设置接口链路类型为trunk，接口缺省链路类型不是trunk口
[SwitchA-Eth-Trunk1] port trunk allow-pass vlan 5 10
[SwitchA-Eth-Trunk1] load-balance src-dst-mac   //配置Eth-Trunk1基于源MAC地址与目的MAC地址进行负载分担
[SwitchA-Eth-Trunk1] quit

2、LACP链路聚合

<HUAWEI> system-view
[HUAWEI] sysname SwitchA
[SwitchA] interface eth-trunk 1   //创建ID为1的Eth-Trunk接口
[SwitchA-Eth-Trunk1] mode lacp   //配置链路聚合模式为LACP模式
[SwitchA] interface gigabitethernet 0/0/1
[SwitchA-GigabitEthernet0/0/1] eth-trunk 1   //将GE0/0/1接口加入Eth-Trunk1中
[SwitchA-GigabitEthernet0/0/1] quit
[SwitchA] interface gigabitethernet 0/0/2
[SwitchA-GigabitEthernet0/0/2] eth-trunk 1   //将GE0/0/2接口加入Eth-Trunk1中
[SwitchA-GigabitEthernet0/0/2] quit
[SwitchA] interface gigabitethernet 0/0/3
[SwitchA-GigabitEthernet0/0/3] eth-trunk 1   //将GE0/0/3接口加入Eth-Trunk1中
[SwitchA-GigabitEthernet0/0/3] quit
[SwitchA] lacp priority 100   //系统LACP优先级缺省为32768，修改SwitchA的优先级大于SwitchB的优先级，作为主动端
[SwitchA] interface eth-trunk 1
[SwitchA-Eth-Trunk1] max active-linknumber 2   //链路聚合组活动接口数的上限阈值缺省是8，修改活动接口数的上限阈值为2
[SwitchA-Eth-Trunk1]lacp preempt enable    //开启LACP抢占模式（选配）
[SwitchA-Eth-Trunk1]lacp preempt delay 40   //LACP抢占时间为40s（选配） 
[SwitchA-Eth-Trunk1]lacp timeout slow  //设置LACP的接收超时时间（选配）
[SwitchA-Eth-Trunk1] quit
[SwitchA] interface gigabitethernet 0/0/1
[SwitchA-GigabitEthernet0/0/1] lacp priority 100   //接口LACP优先级缺省为32768，修改GE0/0/1接口的LACP优先级为100，作为活动接口
[SwitchA-GigabitEthernet0/0/1] quit
[SwitchA] interface gigabitethernet 0/0/2
[SwitchA-GigabitEthernet0/0/2] lacp priority 100   //接口LACP优先级缺省为32768，修改GE0/0/2接口的LACP优先级为100，作为活动接口
[SwitchA-GigabitEthernet0/0/2] quit