120 Labs for Cisco CCNA 200-125 and CCENT Exams

Lab 102: Implementing HSRP

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Lab Objective:

The objective of this lab exercise is for you to learn how to implement HSRP in the Core level of your network.

Lab Purpose:

Hot Standby Router Protocol (HSRP) is a protocol that allows you to have redundancy at the Core level by having two routers acting as a default gateway. By configuring a priority level on the router interfaces, you will determine which one acts as primary and which one as secondary. As a Cisco engineer, as well as in the Cisco CCNA exam, you will be expected to know how to implement HSRP functionality.

Certification Level:

This lab is suitable for ICND2 and CCNA certification exam preparation.

Lab Difficulty:

This lab has a difficulty rating of 8/10.

Readiness Assessment:

When you are ready for your certification exam, you should complete this lab in no more than 20 minutes.

Lab Topology:

Please use the following topology to complete this lab exercise:

NOTE: R1 and R2 both connect to the Internet.

Task 1:

Configure hostnames on R1, R2, and R3 as illustrated in the topology.

Task 2:

Configure the IP addresses on the Gig0/0 interfaces of R1, R2, and R3 as illustrated in the topology.

Note: 192.168.10.254 will be the HSRP address shared between R1 and R2.

Task 3:

Configure HSRP on R1 and R2 as follows:

  • HSRP group number: 100
  • HSRP virtual IP address: 192.168.10.254
  • R1: primary gateway (HSRP Priority 100)
  • R2: secondary gateway (HSRP Priority 90)
  • HSRP routers should send Hellos every second and detect a failure of a router in 3 seconds
  • HSRP routers should authenticate their communication using the key “CCNA”.

Task 4:

Configure R3 to use 192.168.10.254 (HSRP virtual IP) as its default gateway.

Task 5:

Check the status of HSRP on R1 and R2 running the following commands:

  • show standby
  • show standby brief

Configuration and Verification

Task 1:

For reference information on configuring hostnames, please refer to earlier labs.

Task 2:

For reference information on configuring IP addressing, please refer to earlier labs.

Task 3:

R1#config t 
R1(config)#int gig0/0 
R1(config-if)#standby 100 ip 192.168.10.254 
R1(config-if)#standby 100 priority 100 
R1(config-if)#standby 100 authentication CCNA 
R1(config-if)#standby 100 timers 1 3 

R2(config)#int gig0/0 
R2(config-if)#standby 100 ip 192.168.10.254 
R2(config-if)#standby 100 priority 90 
R2(config-if)#standby 100 authentication CCNA 
R2(config-if)#standby 100 timers 1 3

Note: The authentication commands will not work on Packet Tracer.

Task 4:

R3(config)#ip route 0.0.0.0 0.0.0.0 192.168.10.254

With this configuration, if R3 wants to communicate on the Internet, it will send the IP packets to the HSRP Active Router and if that router fails the other will take over (redundancy at its maximum level).

Task 5:

R1#show standby      
FastEthernet0/0 - Group 100   
 State is Active 
   2 state changes, last state change 00:22:01 
  Virtual IP address is 192.168.10.254   
 Active virtual MAC address is 0000.0c07.ac64 
  Local virtual MAC address is 0000.0c07.ac64 (v1 default) 
 Hello time 1 sec, hold time 3 sec 
  Next hello sent in 0.816 secs 
 Authentication text, string “CCNA” 
 Preemption disabled 
 Active router is local   
 Standby router is 192.168.10.2, priority 90 (expires in 2.688 sec)   
 Priority 100 (default 100)
  IP redundancy name is “hsrp-Fa0/0-100” (default) 

R2#show standby 
FastEthernet0/0 - Group 100 
 State is Standby 
  1 state change, last state change 00:20:30 
 Virtual IP address is 192.168.10.254 
 Active virtual MAC address is 0000.0c07.ac64 
  Local virtual MAC address is 0000.0c07.ac64 (v1 default) 
 Hello time 1 sec, hold time 3 sec 
  Next hello sent in 0.648 secs 
 Authentication text, string “CCNA” 
 Preemption disabled Active router is 192.168.10.1, priority 100 (expires in 2.804 sec)   
 Standby router is local
 Priority 90 (configured 90) 
  IP redundancy name is “hsrp-Fa0/0-100” (default) 

R1#sh standby brief 
                   P indicates configured to preempt. 
                   | 
Interface   Grp Prio P State    Active  Standby        Virtual IP      
Fa0/0       100 100    Active   local   192.168.10.2   192.168.10.254 

R2#show standby brief 
                   P indicates configured to preempt. 
                   | 
Interface   Grp Prio P State    Active         Standby  Virtual IP      
Fa0/0       100 90     Standby  192.168.10.1   local    192.168.10.254

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