全网可达
Sw1：
[sw1]int g0/0/01
[sw1-GigabitEthernet0/0/1]port link-type trunk
[sw1-GigabitEthernet0/0/1]port trunk allow-pass vlan all
Sw2：
[sw2]vlan batch 2
[sw2]int g0/0/2
[sw2-GigabitEthernet0/0/2]port link-type trunk
[sw2-GigabitEthernet0/0/2]port trunk allow-pass vlan all
[sw2-GigabitEthernet0/0/2]port trunk pvid vlan 2
[sw2]int g0/0/1
[sw2-GigabitEthernet0/0/1]port link-type trunk
[sw2-GigabitEthernet0/0/1]port trunk allow-pass vlan all
[sw2-GigabitEthernet0/0/1]port trunk pvid vlan 2
[sw2]int e0/0/1
[sw2-Ethernet0/0/1]port link-type access
[sw2-Ethernet0/0/1]port default vlan 2
Sw3：
[sw3]int g0/0/2
[sw3-GigabitEthernet0/0/2]port link-type trunk
[sw3-GigabitEthernet0/0/2]port trunk allow-pass vlan all
[sw3]int g0/0/1
[sw3-GigabitEthernet0/0/1]port link-type trunk
[sw3-GigabitEthernet0/0/1]port trunk allow-pass vlan all
Sw4：
[sw4]vlan batch 3
Info: This operation may take a few seconds. Please wait for a moment…done.
[sw4]int e0/0/1
[sw4-Ethernet0/0/1]port link-type access
[sw4-Ethernet0/0/1]port default vlan 3
[sw4]int g0/0/2
[sw4-GigabitEthernet0/0/2]port link-type trunk
[sw4-GigabitEthernet0/0/2]port trunk allow-pass vlan all
[sw4-GigabitEthernet0/0/2]port trunk pvid vlan 3