三层交换实现VLAN间通信cisco

SW2:

en

conf t

hostname SW2

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

switchport mode trunk

switch trunk allow 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

switchport mode trunk

switch trunk allow vlan 10,20

SW1:

en

conf t

hostname SW1

vlan 10

vlan 20

int e0/0

switchport trunk en dot1q

switchport mode trunk

switch trunk allow vlan 10,20

int e0/1

switchport trunk en dot1q

switchport mode trunk

switch trunk allow vlan 10,20

int vlan 10

ip add 192.168.1.254 255.255.255.0

no shut

int vlan 20

ip add 192.168.2.254 255.255.255.0

no shut