sys
valn 10
vlan 20
int g 1/01
port access vlan 10
int g1/0/2
port link-type access
port access vlan 10
int g1/0/3
port link-type access
port access vlan 20
int g 1/0/4
port link-type access
port access vlan 20
qu
int g 1/0/48
port trunk permit vlan 10 20
右边交换机：
sys
vlan 10
vlan 20
int g1/0/1
port access vlan 10
int g1/0/2
port link-type access
port access vlan 20
qu
int g 1/0/48
port link-type trunk
port trunk permit vlan 10 20
上面交换机：
sys
vlan 20
int range g1/0/1 to 1/0/2
port link-type trunk
port trunk permit vlan 10 20
int g1/0/48
port trunk permit vlan 10 20
路由器：
sys
int g0/0.10
vlan-type dot1q vid 10
ip address 192.168.10.254 24
int g 0/0.20
vlan-type dot1q vid 20
ip add 192.168.20.254 24