单臂路由cisco

SW2：

en

conf t

hostname SW2

vlan 10

vlan 20

int e0/2

switchport  mode access

switch access vlan 10

int e0/3

switchport mode access

switchport access vlan 20

int e0/0

switchport trunk en dot1q

switchport mode trunk

switchport trunk allowed vlan 10,20

int e0/1

switchport trunk en dot1q

switchport mode trunk

switchport trunk allowed vlan 10,20

SW3:

en

conf t

hostname SW3

vlan 10

vlan 20

int e0/1

switchport mode access

switchport access vlan 10

int e0/2

switchport mode access

switchport access vlan 20

int e0/0

switchport trunk en dot1q

switch mode trunk

switch trunk allow vlan 10,20

R1:

en

conf t

hostname R1

int e0/0

no shut

int e0/0.10

en dot1q 10

ip add 192.168.1.254 255.255.255.0

int e0/0.20

en dot1q 20

ip add 192.168.2.254 255.255.255.0