单臂路由 不同vlan不同网段之间互通

R1、R2为交换机，R3～R5为pc，R6为路由器R3(config)#no ip routingR3(config)#int f0/0R3(config-if)#ip add 192.168.10.1 255.255.255.0R3(config-if)#no shutR3(config-if)#endR3(config)#ip default-gateway 192.168.10.254R3#show ip routeDefault gateway is 192.168.10.254Host               Gateway           Last Use    Total Uses  InterfaceICMP redirect cache is emptyR4(config)#no ip routingR4(config)#int f0/0R4(config-if)#ip add 192.168.20.1 255.255.255.0R4(config-if)#no shut R4(config-if)#endR4(config)#ip default-gateway 192.168.20.254R4#show ip routeDefault gateway is 192.168.20.254Host               Gateway           Last Use    Total Uses  InterfaceICMP redirect cache is emptyR5(config)#no ip routingR5(config)#int f0/0R5(config-if)#ip add 192.168.10.2 255.255.255.0R5(config-if)#no shutR5(config-if)#endR5(config)#ip default-gateway 192.168.10.254R5#show ip routeDefault gateway is 192.168.10.254Host               Gateway           Last Use    Total Uses  InterfaceICMP redirect cache is emptyR1#vlan databaseR1(vlan)#vlan 10VLAN 10 added:    Name: VLAN0010R1(vlan)#vlan 20VLAN 20 added:    Name: VLAN0020R1(vlan)#exitR1#conf tR1(config)#int f0/0R1(config-if)#switchport mode accessR1(config-if)#switchport access vlan 10R1(config-if)#int f0/1R1(config-if)#switchport mode accessR1(config-if)#switchport access vlan 20R1(config-if)#endR1(config)#int f0/15R1(config-if)#switchport trunk encapsulation dot1qR1(config-if)#switchport mode trunkR1(config-if)#endR2#vlan databaseR2(vlan)#vlan 10VLAN 10 added:    Name: VLAN0010R2(vlan)#vlan 20VLAN 20 added:    Name: VLAN0020R2(vlan)#exitR2#conf tR2(config)#int f0/0R2(config-if)#switchport mode accessR2(config-if)#switchport access vlan 10R2(config-if)#int f0/1R2(config-if)#switchport trunk encapsulation dot1qR2(config-if)#switchport mode trunkR2(config-if)#endR2(config)#int f0/15R2(config-if)#switchport trunk encapsulation dot1qR2(config-if)#switchport mode trunkR2(config-if)#endR6(config)#int f0/0R6(config-if)#no shut  先开启物理接口R6(config-if)#endR6(config)#int f0/0.10R6(config-subif)#encapsulation dot1Q 10R6(config-subif)#ip add 192.168.10.254 255.255.255.0R6(config-subif)#no shutR6(config-subif)#exitR6(config)#int f0/0.20R6(config-subif)#encapsulation dot1Q 20R6(config-subif)#ip address 192.168.20.254 255.255.255.0R6(config-subif)#no shut到此实现了不同vlan和不同网段之间的互通！default interface f0/0 此命令将接口设为默认值