Lab 2. IP Services - HSRP Track Route

Let’s make HSRP first in R1 and R2

R1#

interface Loopback0

 ip address 1.1.1.1 255.255.255.255

!

interface FastEthernet0/0

 ip address 12.12.12.1 255.255.255.0

 standby 1 ip 12.12.12.12

 standby 1 priority 110

 standby 1 preempt

 standby 1 authentication md5 key-string cisco

!

interface Serial0/0

 ip address 13.13.13.1 255.255.255.0

!

router eigrp 1

 network 0.0.0.0

 no auto-summary

R2#

interface Loopback0

 ip address 2.2.2.2 255.255.255.255

!

interface FastEthernet0/0

 ip address 12.12.12.2 255.255.255.0

 standby 1 ip 12.12.12.12

 standby 1 preempt

 standby 1 authentication md5 key-string cisco

!

interface Serial0/0

 ip address 23.23.23.2 255.255.255.0

!

router eigrp 1

 network 0.0.0.0

 no auto-summary

R3#

interface Loopback0

 ip address 3.3.3.3 255.255.255.255

!

interface Serial0/0

 ip address 13.13.13.3 255.255.255.0

!

interface Serial0/1

 ip address 23.23.23.3 255.255.255.0

!

router eigrp 1

 network 0.0.0.0

 no auto-summary

Verify hsrp before add route tracking

R1#show standby brief

                     P indicates configured to preempt.                     |

Interface   Grp  Pri  P State   Active          Standby         Virtual IP

Fa0/0        1    110 P Active  local           12.12.12.2      12.12.12.12

R2(config-if)#do sh stan bri

                     P indicates configured to preempt.                  |

Interface   Grp  Pri  P State   Active          Standby         Virtual IP

Fa0/0        1    100 P Standby 12.12.12.1      local           12.12.12.12

Now let’s add route tracking in R1. So if R1 doesn’t have 3.3.3.3/32 in routing table, the priority in R1 will decrease 20. Then the active HSRP will change to R2.

R1#

track 1 ip route 3.3.3.3 255.255.255.255 reachability

!

interface fa0/0

  standby 1 track 1 decrement 20

Let’s test by shutdown interface loopback 0 in R3 which is 3.3.3.3/32.

R3(config)#int lo0

R3(config-if)#shut

Just wait… then

*Mar  1 00:18:11.755: %TRACKING-5-STATE: 1 ip route 3.3.3.3/32 reachability Up->Down

R1(config-if)#

*Mar  1 00:18:12.899: %HSRP-5-STATECHANGE: FastEthernet0/0 Grp 1 state Active -> Speak

R1(config-if)#

*Mar  1 00:18:22.899: %HSRP-5-STATECHANGE: FastEthernet0/0 Grp 1 state Speak -> Standby

Verify HSRP

R1(config-if)#do sh stand brie

                     P indicates configured to preempt.                     |

Interface   Grp  Pri  P State   Active          Standby         Virtual IP

Fa0/0         1    90  P Standby 12.12.12.2      local           12.12.12.12

R2(config-if)#do sh stand bri

                     P indicates configured to preempt.                     |

Interface   Grp  Pri  P State   Active          Standby         Virtual IP

Fa0/0         1    100 P Active  local           12.12.12.1      12.12.12.12