R6爲交換機，R4屬於vlan2，R5屬於vlan3，R4，R5模擬成PC。
R1的其配置如下：
interface Loopback0
ip address 1.1.1.1 255.255.255.0
interface FastEthernet0/0
ip address 12.1.1.1 255.255.255.0
interface FastEthernet0/1
ip address 13.1.1.1 255.255.255.0
router eigrp 1
network 1.0.0.0
network 12.0.0.0
network 13.0.0.0
R2的配置如下：
interface FastEthernet0/0
ip address 12.1.1.2 255.255.255.0
interface FastEthernet0/1
no ip address
interface FastEthernet0/1.2//配置子接口爲vlan 2
encapsulation dot1Q 2
ip address 192.168.1.1 255.255.255.0
standby 1 ip 192.168.1.10//配置虛擬地址
standby 1 priority 200
standby 1 preempt//配置先佔權
standby 1 track 1 decrement 120//如果接口f0/0down掉的話， 這個子接口的優先級就會前去120
interface FastEthernet0/1.3
encapsulation dot1Q 3
ip address 192.168.2.1 255.255.255.0
standby 2 ip 192.168.2.10
standby 2 preempt
router eigrp 1
network 12.0.0.0
network 192.168.1.0
network 192.168.2.0
R3的配置如下：
interface FastEthernet0/0
no ip address
interface FastEthernet0/0.2
encapsulation dot1Q 2
ip address 192.168.1.2 255.255.255.0
standby 1 ip 192.168.1.10
standby 1 preempt
interface FastEthernet0/0.3
encapsulation dot1Q 3
ip address 192.168.2.2 255.255.255.0
standby 2 ip 192.168.2.10
standby 2 priority 200
standby 2 preempt
standby 2 track 1 decrement 120
interface FastEthernet0/1
ip address 13.1.1.3 255.255.255.0
router eigrp 1
network 13.0.0.0
network 192.168.1.0
network 192.168.2.0
交換機R6的配置如下：
interface FastEthernet0/0
switchport mode trunk
interface FastEthernet0/1
switchport mode trunk
interface FastEthernet0/2
switchport access vlan 2
interface FastEthernet0/3
switchport access vlan 3
R5的配置如下：
ip add 192.168.1.3 255.255.255.0
no ip routing
ip default-gateway 192.168.1.10
R6的配置如下：
ip add 192.168.2.3 255.255.255.0
no ip routing
ip default-gateway 192.168.2.20