Cisco 三层交换配置

三层交换机配置：

SW-R1#vlan database

SW-R1(vlan)#vlan 20 name vlan20

SW-R1(vlan)#vlan 30 name vlan30

SW-R1(vlan)#vlan 40 name vlan40

SW-R1(vlan)#exit

SW-R1#configure terminal

SW-R1(config)# ip routing

SW-R1(config)#interface FastEthernet0/1

SW-R1(config)#switchport trunk encapsulation dot1q

SW-R1(config)#switchport mode trunk

SW-R1(config-if)#exit

SW-R1(config)#interface fastEthernet 0/2

SW-R1(config-if)#no switchport

SW-R1(config-if)#ip address 1.1.1.2 255.255.255.0

SW-R1(config-if)#no shutdown

SW-R1(config-if)#exit

SW-R1(config)#interface vlan 20

SW-R1(config-if)#ip address 192.168.2.1 255.255.255.0

SW-R1(config-if)#no shutdown

SW-R1(config-if)#exit

SW-R1(config)#interface vlan 30

SW-R1(config-if)#ip address 192.168.3.1 255.255.255.0

SW-R1(config-if)#no shutdown

SW-R1(config-if)#exit

SW-R1(config)#interface vlan 40

SW-R1(config-if)#ip address 192.168.4.1 255.255.255.0

SW-R1(config-if)#no shutdown

SW-R1(config-if)#exit

SW-R1(config)#ip route 0.0.0.0 0.0.0.0 1.1.1.1

二层交换机配置：

Switch#vlan database

Switch(vlan)#vlan 20 name vlan20

Switch(vlan)#vlan 30 name vlan30

Switch(vlan)#vlan 40 name vlan40

Switch(vlan)#exit

Switch(config)#interface fastEthernet 0/1

Switch(config-if)#switchport mode trunk

Switch(config)#interface fastEthernet 0/2

Switch(config-if)#switchport access vlan 20

Switch(config-if)#exit

Switch(config)#interface fastEthernet 0/3

Switch(config-if)#switchport access vlan 30

Switch(config-if)#exit

Switch(config)#interface fastEthernet 0/4

Switch(config-if)#switchport access vlan 40

Switch(config-if)#exit