VRRP_LAB

 

 

一、R1/R2/R3 接口IP配置

R1

#
interface GigabitEthernet0/0/0
 ip address 12.1.1.1 255.255.255.0
#
interface GigabitEthernet0/0/1
 ip address 13.1.1.1 255.255.255.0
#
interface LoopBack0
 ip address 1.1.1.1 255.255.255.0

 

R2

#
interface GigabitEthernet0/0/0
 ip address 192.168.23.10 255.255.255.0
#
interface GigabitEthernet0/0/1
 ip address 12.1.1.2 255.255.255.0
#

 

R3

#
interface GigabitEthernet0/0/0
 ip address 13.1.1.3 255.255.255.0
#
interface GigabitEthernet0/0/1
 ip address 192.168.23.20 255.255.255.0
#

 

二、R1/R2/R3 路由配置

R1

#
ospf 1 router-id 1.1.1.1
 area 0.0.0.0
  network 1.1.1.0 0.0.0.255
  network 12.1.1.0 0.0.0.255
  network 13.1.1.0 0.0.0.255
#

 

R2

#
ospf 1 router-id 2.2.2.2
 area 0.0.0.0
  network 12.1.1.0 0.0.0.255
  network 192.168.23.0 0.0.0.255
#

 

R3

#
ospf 1 router-id 3.3.3.3
 area 0.0.0.0
  network 13.1.1.0 0.0.0.255
  network 192.168.23.0 0.0.0.255
#

 

三、VRRP配置

R2

#
interface GigabitEthernet0/0/0
 vrrp vrid 1 virtual-ip 192.168.23.254
 vrrp vrid 1 priority 150
#

 

R3

#
interface GigabitEthernet0/0/1
 vrrp vrid 1 virtual-ip 192.168.23.254
#

 

四、测试

R2

[R2]display vrrp
  GigabitEthernet0/0/0 | Virtual Router 1
    State : Master
    Virtual IP : 192.168.23.254
    Master IP : 192.168.23.10
    PriorityRun : 150
    PriorityConfig : 150
    MasterPriority : 150
    Preempt : YES   Delay Time : 0 s
    TimerRun : 1 s
    TimerConfig : 1 s
    Auth type : NONE
    Virtual MAC : 0000-5e00-0101
    Check TTL : YES
    Config type : normal-vrrp
    Backup-forward : disabled
    Track IF : GigabitEthernet0/0/1   Priority reduced : 60
    IF state : UP
    Create time : 2022-12-23 16:51:01 UTC-08:00
    Last change time : 2022-12-23 17:06:28 UTC-08:00

 

R3

[R3]display vrrp
  GigabitEthernet0/0/1 | Virtual Router 1
    State : Backup
    Virtual IP : 192.168.23.254
    Master IP : 192.168.23.10
    PriorityRun : 100
    PriorityConfig : 100
    MasterPriority : 150
    Preempt : YES   Delay Time : 0 s
    TimerRun : 1 s
    TimerConfig : 1 s
    Auth type : NONE
    Virtual MAC : 0000-5e00-0101
    Check TTL : YES
    Config type : normal-vrrp
    Backup-forward : disabled
    Create time : 2022-12-23 16:52:06 UTC-08:00
    Last change time : 2022-12-23 17:06:28 UTC-08:00

 

PC

 

 

 

 

五、VRRP接口跟踪

R2

#
interface GigabitEthernet0/0/0
 vrrp vrid 1 track interface GigabitEthernet0/0/1 reduced 60  #R2上 监视上行接口 g0/0/1，在该接口down时，优先级自动减少 60
#