配置端口聚合

要求聚合的端口工作在全双工，速度一致，在同一槽口且连续。
参数：ingress:源MAC, both:源和目的MAC

对于SwitchA:

[SwitchA]interface ethernet0/1
[SwitchA-Ethernet0/1]duplex full　＃设置以太口全双工状态
[SwitchA-Ethernet0/1]speed 100

[SwitchA-Ethernet0/1]mdi across＃(连接网线为交叉网线）/normal ＃为连接网线类型为平行网线．

[SwitchA-Ethernet0/1]flow_control 　#开启流量控制

[SwitchA-Ethernet0/1]broadcast_suppression 10 　#广播风暴仰制比

[SwitchA-Ethernet0/1]port link_type access　　 ＃端口连接类型

[SwitchA-Ethernet0/1]int e0/2
[SwitchA-Ethernet0/2]duplex full
[SwitchA-Ethernet0/2]speed 100

对于SwitchB:

[SwitchB]interface ethernet0/1
[SwitchB-Ethernet0/1]duplex full
[SwitchB-Ethernet0/1]speed 100

[SwitchB-Ethernet0/1]int e0/2
[SwitchB-Ethernet0/2]duplex full
[SwitchB-Ethernet0/2]speed 100

聚合操作：

[SwitchA]link-aggregation ethernet0/1 to ethernet0/2 both
[SwitchB]link-aggregation ethernet0/1 to ethernet0/2 both

[SwitchA]display link-aggregation ethernet0/1
[SwitchA]undo link-aggregation all