H3C交换机配置M-LAG

m-lag的两种接口

Keeplivead接口：接口类型为路由模式，需要配置上IP地址

peer-link接口：接口为汇聚端口或通道端口

模拟器要关闭配置一致性检查： m-lag consistency-check disable

实验需求：实现两台PC可以相互ping通。SW1和SW2的双活架构，完成设备间的Peer-Link互联、Keepalive心跳检测，跨设备业务链路聚合，实现PC5使用VRRP双活网关，PC6使用M-LAG双活网关。

配置部署：

1、配置SW1和SW2的m-lag系统

SW1#

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m-lag system-number 1      设置m-lag系统编号,同一分布式聚合组中的M-LAG设备应配置不同的系统编号
m-lag system-priority 100    设置m-lag优先级,同一分布式聚合组中，所有M-LAG设备的系统优先级必须相同
m-lag system-mac 0001-0001-0001   设置m-lag源mac,同一分布式聚合组中，所有M-LAG设备的系统MAC地址必须相同

SW2#

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m-lag system-number 2      
m-lag system-priority 100    
m-lag system-mac 0001-0001-0001

2、配置 Keepalive 接口

SW1#

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interface GigabitEthernet1/0/1
 port link-mode route   设置接口类型为路由模式
 ip address 172.16.1.1 255.255.255.252

m-lag mad exclude interface GigabitEthernet1/0/1   配置为 M-LAG 保留接口，M-LAG 系统分裂后，这些端口不 Down。
m-lag keepalive ip destination 172.16.1.2 source 172.16.1.1   配置Keepalive报文的目的IPv4地址和源IPv4地址

SW2#

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interface GigabitEthernet1/0/1
 port link-mode route   
 ip address 172.16.1.2 255.255.255.252

m-lag mad exclude interface GigabitEthernet1/0/1
m-lag keepalive ip destination 172.16.1.1 source 172.16.1.2

3、配置 peer-link 接口

SW1#

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interface Bridge-Aggregation1
 link-aggregation mode dynamic   #添加汇聚接口，配置为动态模式

interface FortyGigE1/0/53
 port link-aggregation group 1     #将接口添加到聚合端口中

interface Bridge-Aggregation1
 port m-lag peer-link 1                #设备聚合端口为peer-link接口
 undo mac-address static source-check enable #关闭报文入接口与静态MAC地址表项匹配检查功能，避免跨peer-link链路三层转发的流量不通
dis m-lag system   #查看m-lag系统信息

SW2#

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interface Bridge-Aggregation1
 link-aggregation mode dynamic

interface FortyGigE1/0/53
 port link-aggregation group 1

interface Bridge-Aggregation1
 port m-lag peer-link 1
undo mac-address static source-check enable

4、配置 M-LAG 接口下连到SW3

SW1#

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vlan 10
interface Bridge-Aggregation2
 link-aggregation mode dynamic

 interface GigabitEthernet1/0/2
 port link-aggregation group 2

interface Bridge-Aggregation2
 port link-type trunk
 port trunk permit vlan 1 10
port m-lag group 2   #配置聚合口2加入M-LAG组2

SW2#配置相同

SW3#

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vlan 10
interface Bridge-Aggregation2
link-aggregation mode dynamic
int range int g1/0/1 to g1/0/2
port link-aggregation group 2
nterface Bridge-Aggregation2
port link-type trunk
 port trunk permit vlan 10

5、配置 M-LAG 接口下连到SW4

SW1#

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vlan 20
interface Bridge-Aggregation3
 link-aggregation mode dynamic

 interface GigabitEthernet1/0/3
 port link-aggregation group 3

interface Bridge-Aggregation3
 port link-type trunk
 port trunk permit vlan 1 20
port m-lag group 3   #配置聚合口2加入M-LAG组3

SW2#配置相同

SW4#

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vlan 20
interface Bridge-Aggregation3
link-aggregation mode dynamic
int range int g1/0/1 to g1/0/2
port link-aggregation group 3
nterface Bridge-Aggregation3
port link-type trunk
 port trunk permit vlan 20

dis link-aggregation verbose 查看端口聚合状态

5、配置VRRP双活网关

SW1#

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interface Vlan-interface10
 ip address 192.168.10.251 255.255.255.0
 vrrp vrid 10 virtual-ip 192.168.10.254

SW2#

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interface Vlan-interface10
 ip address 192.168.10.252 255.255.255.0
 vrrp vrid 10 virtual-ip 192.168.10.254

SW3#

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int g1/0/3
 port access vlan 10

5、配置VLAN双活网关，推荐使用

SW1#SW2#配置一样

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interface Vlan-interface20
 ip address 192.168.20.254 255.255.255.0
 mac-address 0002-0002-0002

SW4#

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int g1/0/3
 port access vlan 20