实验图如下图示：
实验连线如下： R1 f0/0 <—> ESW1 f0/0 R1 f0/1 <—> ESW2 f0/1 R2相当于PC1,关闭路由器功能后，设置f0/1接口地址为192.168.1.1/24和网关192.168.1.254。 R3相当于PC2,关闭路由器功能后，设置f0/0接口地址为192.168.2.2/24和网关192.168.2.254。 ESW1 f0/14 <—> ESW2 f0/14 ESW1 f0/15 <—> ESW2 f0/15 ESW1 f1/1 <—> R2 f0/1 ESW2 f1/0 <—> R3 f0/0 实验效果： 当配置完成后，R2能够与R3互通，VRRP Master全部由ESW1接管。 当断开ESW1上连R1的接口后，VRRP Master全部由ESW2接管，R2还是能够与R3互通。 R1: interface Loopback0 ip address 1.1.1.1 255.255.255.255 interface FastEthernet0/0 ip address 12.1.1.1 255.255.255.0 no sh interface FastEthernet0/1 ip address 13.1.1.1 255.255.255.0 no sh router rip network 1.0.0.0 network 12.0.0.0 network 13.0.0.0 ESW1: interface Loopback0 ip address 2.2.2.2 255.255.255.255 interface Port-channel1 switchport mode trunk interface FastEthernet0/0 ip address 12.1.1.2 255.255.255.0 no sh interface FastEthernet1/1 switchport access vlan 10 no sh interface FastEthernet1/14 switchport mode trunk duplex full speed 100 channel-group 1 mode on no sh interface FastEthernet1/15 switchport mode trunk duplex full speed 100 channel-group 1 mode on no sh track 1 interface FastEthernet0/0 line-protocol track 2 interface Port-channel1 line-protocol interface Vlan10 ip address 192.168.1.251 255.255.255.0 vrrp 10 ip 192.168.1.254 vrrp 10 priority 130 vrrp 10 track 1 vrrp 10 track 2 interface Vlan20 ip address 192.168.2.251 255.255.255.0 vrrp 20 ip 192.168.2.254 vrrp 20 priority 120 vrrp 20 track 1 vrrp 20 track 2 router rip network 2.0.0.0 network 12.0.0.0 network 192.168.1.0 network 192.168.2.0 ESW2: interface Loopback0 ip address 3.3.3.3 255.255.255.255 interface Port-channel1 switchport mode trunk no sh interface FastEthernet0/1 ip address 13.1.1.3 255.255.255.0 no sh interface FastEthernet1/0 switchport access vlan 20 duplex full speed 100 no sh interface FastEthernet1/14 switchport mode trunk duplex full speed 100 channel-group 1 mode on no sh interface FastEthernet1/15 switchport mode trunk duplex full speed 100 channel-group 1 mode on no sh track 1 interface FastEthernet0/1 line-protocol track 2 interface Port-channel1 line-protocol interface Vlan10 ip address 192.168.1.252 255.255.255.0 vrrp 10 ip 192.168.1.254 vrrp 10 priority 120 vrrp 10 track 1 vrrp 10 track 2 interface Vlan20 ip address 192.168.2.252 255.255.255.0 vrrp 20 ip 192.168.2.254 vrrp 20 priority 110 vrrp 20 track 1 vrrp 20 track 2 router rip network 3.0.0.0 network 13.0.0.0 network 192.168.1.0 network 192.168.2.0 R2: no ip routing interface FastEthernet0/1 ip address 192.168.1.1 255.255.255.0 no sh ip default-gateway 192.168.1.254 R3: no ip routing interface FastEthernet0/0 ip address 192.168.2.2 255.255.255.0 no sh ip default-gateway 192.168.2.254 ESW1: config t int f0/0 sh 当断开与R1上连后，VRRP Master开始发生变化了，原来在ESW1的Master全部变成Backup状态。 *Mar 1 00:10:43.283: %VRRP-6-STATECHANGE: Vl10 Grp 10 state Master -> Backup *Mar 1 00:10:43.287: %VRRP-6-STATECHANGE: Vl20 Grp 20 state Master -> Backup