1、创建Eth-Trunk将多个接口逻辑的整合为一个接口,实现带宽的叠加
[sw1]interface Eth-Trunk 0
[sw1-GigabitEthernet0/0/4]eth-trunk 0
[sw1-GigabitEthernet0/0/5]eth-trunk 0
[sw2]interface Eth-Trunk 0
[sw2-GigabitEthernet0/0/4]eth-trunk 0
[sw2-GigabitEthernet0/0/5]eth-trunk 0
2、创建Trunk干道和vlan
[sw1]vlan 2
[sw1]port-group group-member g0/0/2 to g0/0/3 Eth-Trunk 0
[sw1-port-group]port link-type trunk
[sw1-port-group]port trunk allow-pass vlan 2
[sw2]vlan 2
[sw2]port-group group-member g0/0/2 to g0/0/3 Eth-Trunk 0
[sw2-port-group]port link-type trunk
[sw2-port-group]port trunk allow-pass vlan 2
[sw3]vlan 2
[sw3-Ethernet0/0/1]port link-type access
[sw3-Ethernet0/0/1]port default vlan 1
[sw3-Ethernet0/0/2]port link-type access
[sw3-Etherne