一、实验配置
（1）mlag基础配置
[SW1]m-lag system-mac 1-1-1 //M-LAG系统的MAC地址【两台M-LAG设备必须一样】
[SW1]m-lag system-number 1 //M-LAG成员编号【两台M-LAG设备不能一样】
[SW1]m-lag system-priority 4096 //对外呈现的LACP系统优先级【默认是32768，两台M-LAG设备必须一样】
同理，SW2也是同样配置
[SW2]m-lag system-mac 1-1-1
[SW2]m-lag system-number 2
[SW2]m-lag system-priority 4096
（2）配置keepalive接口
[SW1]interface g1/0/2
[SW1-GigabitEthernet1/0/2]port link-mode route
[SW1-GigabitEthernet1/0/2]ip address 1.1.1.1 24
[SW1]m-lag keepalive ip destination 1.1.1.2 source 1.1.1.1
同理，SW2也是同样配置
[SW2]interface g1/0/2
[SW2-GigabitEthernet1/0/2]port link-mode route
[SW2-GigabitEthernet1/0/2]ip address 1.1.1.2 24
[SW2]m-lag keepalive ip destination 1.1.1.1 source 1.1.1.2
（3）配置peer-link接口
peer-link必须是聚合接口
[SW1]interface Bridge-Aggregation 100
[SW1-Bridge-Aggregation100]link-aggregation mode dynamic
[SW1]interface range XGE1/0/49 XGE1/0/50
[SW1-if-range]port link-aggregation group 100
[SW1]interface Bridge-Aggregation 100
[SW1-Bridge-Aggregation100]port m-lag peer-link 1
同理，SW2也是同样配置
[SW2]interface Bridge-Aggregation 100
[SW2-Bridge-Aggregation100]link-aggregation mode dynamic
[SW2]interface range XGE1/0/49 XGE1/0/50
[SW2-if-range]port link-aggregation group 100
[SW2-if-range]quit[SW2]interface Bridge-Aggregation 100
[SW2-Bridge-Aggregation100]port m-lag peer-link 1
（4）配置M-LAG接口
[SW1]interface Bridge-Aggregation 1
[SW1-Bridge-Aggregation1]link-aggregation mode dynamic
[SW1]interface g1/0/5
[SW1-GigabitEthernet1/0/5]port link-aggregation group 1
[SW1]interface Bridge-Aggregation 1
[SW1-Bridge-Aggregation1]port m-lag group 1 //将本设备的聚合接口1配置为M-LAG接口
同理，SW2也是同样配置
[SW2]interface Bridge-Aggregation 1
[SW2-Bridge-Aggregation1]link-aggregation mode dynamic
[SW2]interface g1/0/5
[SW2-GigabitEthernet1/0/5]port link-aggregation group 1
[SW2]interface Bridge-Aggregation 1
[SW2-Bridge-Aggregation1]port m-lag group 1
[SW3]interface Bridge-Aggregation 1
[SW3-Bridge-Aggregation1]link-aggregation mode dynamic
[SW3]interface range g1/0/1 g1/0/2
[SW3-if-range]port link-aggregation group 1
[SW3-if-range]quit
[SW1]interface Bridge-Aggregation 2
[SW1-Bridge-Aggregation2]link-aggregation mode dynamic
[SW1]interface g1/0/1
[SW1-GigabitEthernet1/0/1]port link-aggregation group 2
[SW1]interface Bridge-Aggregation 2
[SW1-Bridge-Aggregation2]port m-lag group 2 //将本设备的聚合接口2配置为M-LAG接口
[SW2]interface Bridge-Aggregation 2
[SW2-Bridge-Aggregation2]link-aggregation mode dynamic
[SW2]interface g1/0/1
[SW2-GigabitEthernet1/0/1]port link-aggregation group 2
[SW2]interface Bridge-Aggregation 2
[SW2-Bridge-Aggregation2]port m-lag group 2
[GW]interface Bridge-Aggregation 1
[GW-Bridge-Aggregation1]link-aggregation mode dynamic
[GW-Bridge-Aggregation1]qu[GW]interface range g1/0/1 g1/0/2
[GW-if-range]port link-aggregation group 1
注意：模拟器默认会因为STP的配置一致性检查无法通过，导致接口无法起来，需要敲一下以下命令：
[SW1]m-lag consistency-check disable //关闭配置一致性检查
[SW2]m-lag consistency-check disable //关闭配置一致性检查
[SW1]interface Bridge-Aggregation 100
[SW1-Bridge-Aggregation100]jumboframe enable 1552 //开启巨型帧支持
[SW2]interface Bridge-Aggregation 100
[SW2-Bridge-Aggregation100]jumboframe enable 1552 //开启巨型帧支持
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至此M-log的配置就结束了，但为了实验的完整性，会继续进行一些基本操作，用于验证m-log
下面内容非重点，可略
（5）配置路由，实现通信
[GW]vlan 10 20
[GW]interface Bridge-Aggregation 1
[GW-Bridge-Aggregation1]port link-type trunk
[GW-Bridge-Aggregation1]port trunk permit vlan 10 20
[GW-Bridge-Aggregation1]qu
[SW1]vlan 10 20
[SW1]interface Bridge-Aggregation 2
[SW1-Bridge-Aggregation2]port link-type trunk
[SW1-Bridge-Aggregation2]port trunk permit vlan 10 20
[SW1-Bridge-Aggregation2]qu
[SW1]interface Bridge-Aggregation 1
[SW1-Bridge-Aggregation1]port link-type trunk
[SW1-Bridge-Aggregation1]port trunk permit vlan 10 20
[SW1-Bridge-Aggregation1]qu
[SW2]vlan 10 20
[SW2]interface Bridge-Aggregation 2
[SW2-Bridge-Aggregation2]port link-type trunk
[SW2-Bridge-Aggregation2]port trunk permit vlan 10 20
[SW2-Bridge-Aggregation2]qu
[SW2]interface Bridge-Aggregation 1
[SW2-Bridge-Aggregation1]port link-type trunk
[SW2-Bridge-Aggregation1]port trunk permit vlan 10 20
[SW2-Bridge-Aggregation1]qu
[SW3]vlan 10 20
[SW3]interface Bridge-Aggregation 1
[SW3-Bridge-Aggregation1]port link-type trunk
[SW3-Bridge-Aggregation1]port trunk permit vlan 10 20
[SW3-Bridge-Aggregation1]qu
[SW3]interface g1/0/3
[SW3-GigabitEthernet1/0/3]port link-type access
[SW3-GigabitEthernet1/0/3]port access vlan 10
[SW3-GigabitEthernet1/0/3]qu
[SW3]interface g1/0/4
[SW3-GigabitEthernet1/0/4]port link-type access
[SW3-GigabitEthernet1/0/4]port access vlan 20
[SW3-GigabitEthernet1/0/4]qu
配置网关，两台PC实现通信
[GW]interface vlan-interface 10
[GW-Vlan-interface10]ip address 192.168.1.254 24
[GW-Vlan-interface10]qu
[GW]interface vlan-interface 20
[GW-Vlan-interface20]ip address 192.168.2.254 24
[GW-Vlan-interface20]qu
PC1配置 ip 192.168.1.100 255.255.255.0 192.168.1.254
PC1配置 ip 192.168.2.100 255.255.255.0 192.168.2.254
接下来是实现路由的通信
[GW]interface g1/0/3
[GW-GigabitEthernet1/0/3]port link-mode route
[GW-GigabitEthernet1/0/3]ip address 202.100.1.1 24
[H3C]sysn R1
[R1]interface g0/0
[R1-GigabitEthernet0/0]ip address 202.100.1.254 24
[R1-GigabitEthernet0/0]qu
[R1]interface lo0
[R1-LoopBack0]ip address 8.8.8.8 32
[R1-LoopBack0]quit
[GW]ip route-static 0.0.0.0 0 202.100.1.254
[R1]ip route-static 192.168.1.0 24 202.100.1.1
[R1]ip route-static 192.168.2.0 24 202.100.1.1
