拓朴如下：

主要配置如下：

[S1]
vlan batch 10 20
#
interface Vlanif10
 ip address 10.1.1.1 255.255.255.0
 vrrp vrid 1 virtual-ip 10.1.1.254
 vrrp vrid 1 priority 200
 vrrp vrid 1 preempt-mode timer delay 20
#
interface Vlanif20
 ip address 13.1.1.1 255.255.255.0
#
interface GigabitEthernet0/0/1
 port link-type access
 port default vlan 10
#
interface GigabitEthernet0/0/2
 port link-type access
 port default vlan 20
#
ospf 1
 area 0.0.0.0
  network 0.0.0.0 255.255.255.255
#

[S2]
vlan batch 10 30
#
interface Vlanif10
 ip address 10.1.1.2 255.255.255.0
 vrrp vrid 1 virtual-ip 10.1.1.254
#
interface Vlanif30
 ip address 23.1.1.2 255.255.255.0
#
interface GigabitEthernet0/0/1
 port link-type access
 port default vlan 30
#
interface GigabitEthernet0/0/2
 port link-type access
 port default vlan 10
#
ospf 1
 area 0.0.0.0
  network 0.0.0.0 255.255.255.255
#

[R1]
interface GigabitEthernet0/0/1
 ip address 13.1.1.3 255.255.255.0 
#
interface GigabitEthernet0/0/2
 ip address 23.1.1.3 255.255.255.0 
#
interface NULL0
#
interface LoopBack0
 ip address 3.3.3.3 255.255.255.255 
#
ospf 1 
 area 0.0.0.0 
  network 0.0.0.0 255.255.255.255 
#

验证：

PC1和PC2分别ping R1上的环回口3.3.3.3，然后断开S3上的3口，经几个丢包后，仍然连通，查看VRRP状态，S2已经成为master: