Cisco端口捆绑etherchannel之LACP

两个捆绑接口都配置为通用捆绑协议lacp,acitve模式又发又收协商信息,以太网最多可以捆绑8条物理链路。

Would you like to enter the initial configuration dialog? [yes/no]: no
Switch>en

Switch#conf t

Switch(config)#hostname SW1

SW1(config)#int range f1/0/12 - 13

SW1(config-if-range)#channel-protocol lacp

创建逻辑接口po12

SW1(config-if-range)#channel-group 12 mode active

Switch(config)#hostname SW2

SW2(config)#int range f2/0/12 - 13

SW2(config-if-range)#channel-protocol lacp

SW2(config-if-range)#channel-group 12 mode active

SW2(config-if-range)#do show etherchannel summary
Flags: D - down P - in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use f - failed to allocate aggregator
u - unsuitable for bundling
w - waiting to be aggregated
d - default port

Number of channel-groups in use: 1
Number of aggregators: 1

Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
12 Po12(SU) LACP Fa2/0/12(P) Fa2/0/13(P)

SU表示捆绑状态正常

SW2(config)#do show int status

逻辑接口po12上的设置,覆盖物理接口的配置。如下配置trunk接口。

SW1(config)#int po12

SW1(config-if)#switchport trunk encapsulation dot1q

SW1(config-if)#switchport mode trunk
SW1(config-if)#switchport nonegotiate

SW2(config)#int po12

SW2(config-if)#switchport trunk encapsulation dot1q

SW2(config-if)#switchport mode trunk

SW2(config-if)#switchport nonegotiate

配置本帧vlan和排除vlan

SW1(config)#int po12

SW1(config-if)#switchport trunk native vlan 2

SW1(config-if)#switchport trunk allowed vlan except 99

SW2(config)#int po12

SW2(config-if)#switchport trunk native vlan 2

SW2(config-if)#switchport trunk allowed vlan except 99

SW2(config-if)#do show int trunk

SW2(config-if)#do sh run int f2/0/12

默认就是src-mac的负载均衡方式,不需要修改。

SW2(config)#do show port-channel load-balance