说明：我这里的连线方式和拓扑上的不一样，具体方式如下： Switch1 F0/1 <----> Switch2 F0/1  Switch1 F0/2 <----> Switch3 F0/2  Switch2 F0/10 <----> Switch3 F0/10  Switch2 F0/2 <----> Switch4 F0/2  Switch3 F0/1 <----> Switch4 F0/1  Router1 F0/0 <----> Switch4 F0/0 

Router#show run Building configuration... Current configuration : 1023 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname Router ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef ! ! ! ! !          ! ! ! ! ! ! ! ! ! ! ! ! ! !  ! ! ! ! interface FastEthernet0/0  ip address 172.16.1.1 255.255.255.0  duplex auto  speed auto !          interface Serial1/0  ip address 10.250.34.51 255.255.255.0  serial restart-delay 0 ! interface Serial1/1  no ip address  shutdown  serial restart-delay 0 ! interface Serial1/2  no ip address  shutdown  serial restart-delay 0 ! interface Serial1/3  no ip address  shutdown  serial restart-delay 0 ! ip http server no ip http secure-server ! ip route 0.0.0.0 0.0.0.0 Serial1/0 2 ip route 192.168.10.0 255.255.255.0 172.16.1.2 ip route 192.168.10.0 255.255.255.0 172.16.1.3 ip route 192.168.20.0 255.255.255.0 172.16.1.3 ip route 192.168.20.0 255.255.255.0 172.16.1.2 ! ! ! ! control-plane ! ! ! ! ! ! ! ! ! ! line con 0 line aux 0 line vty 0 4  login     ! ! end

sw1#show run Building configuration... Current configuration : 940 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname sw1 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef ! ! ! ! !          ! ! ! ! ! ! ! ! ! ! ! ! ! !  ! ! ! ! interface FastEthernet0/0 ! interface FastEthernet0/1  switchport mode trunk !          interface FastEthernet0/2  switchport mode trunk ! interface FastEthernet0/3 ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 ! interface FastEthernet0/12 !          interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1  no ip address ! ip http server no ip http secure-server ! ! ! ! ! control-plane ! ! ! ! ! !          ! ! ! ! line con 0 line aux 0 line vty 0 4  login ! ! end

sw2#show run Building configuration... Current configuration : 1497 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname sw2 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef ! ! ! ! !          ! ! ! ! ! ! ! ! ! ! ! ! ! ! !  ! ! ! ! interface Port-channel1  switchport mode trunk ! interface FastEthernet0/0 ! interface FastEthernet0/1  switchport mode trunk ! interface FastEthernet0/2  no switchport  ip address 172.16.1.2 255.255.255.0 ! interface FastEthernet0/3 ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10  switchport mode trunk  channel-group 1 mode on ! interface FastEthernet0/11  switchport mode trunk  channel-group 1 mode on ! interface FastEthernet0/12  switchport mode trunk  channel-group 1 mode on ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1  no ip address ! interface Vlan10  ip address 192.168.10.254 255.255.255.0  standby 1 ip 192.168.10.250  standby 1 timers 3 50  standby 1 priority 200  standby 1 preempt  standby 1 track FastEthernet0/2 150 ! interface Vlan20  ip address 192.168.20.254 255.255.255.0  standby 2 ip 192.168.20.250  standby 2 preempt  standby 2 track FastEthernet0/2 ! ip http server no ip http secure-server ! ! ! ! ! control-plane ! ! ! !          ! ! ! ! ! ! line con 0 line aux 0 line vty 0 4  login ! ! end

sw3#show run Building configuration... Current configuration : 1572 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname sw3 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 ! ! ip cef ! ! ! ! !          ! ! ! ! ! ! ! ! ! ! ! ! ! ! !  ! ! ! ! interface Port-channel1  switchport mode trunk ! interface FastEthernet0/0 ! interface FastEthernet0/1  no switchport  ip address 172.16.1.3 255.255.255.0 ! interface FastEthernet0/2  switchport mode trunk ! interface FastEthernet0/3 ! interface FastEthernet0/4 ! interface FastEthernet0/5 ! interface FastEthernet0/6 ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10  switchport mode trunk  channel-group 1 mode on ! interface FastEthernet0/11  switchport mode trunk  channel-group 1 mode on ! interface FastEthernet0/12  switchport mode trunk  channel-group 1 mode on ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface Vlan1  no ip address ! interface Vlan10  ip address 192.168.10.253 255.255.255.0  standby 1 ip 192.168.10.250  standby 1 timers 3 50  standby 1 preempt  standby 1 track FastEthernet0/1 ! interface Vlan20  ip address 192.168.20.253 255.255.255.0  standby 2 ip 192.168.20.250  standby 2 priority 200  standby 2 preempt  standby 2 track FastEthernet0/1 150 ! ip http server no ip http secure-server ! ! ! mac-address-table static 0000.0c07.ac02 interface FastEthernet0/10 vlan 20 ! ! control-plane ! ! !          ! ! ! ! ! ! ! line con 0 line aux 0 line vty 0 4  login ! ! end