EIGRP Timers


Scenario:

You are the network engineer for a fairly large international operating company.  One of the trainees in the company is studying for his CCNA and decided to practice on some of the company routers. EIGRP is now messed up and it’s up to you to reconfigure the timers again.

Goal:

  • All IP addresses have been preconfigured for you.
  • Configure EIGRP on all interfaces.
  • Router Boston should have a holddown timers of 9 seconds for all neighbors.
  • Router NewYork should send an EIGRP hello packet every 5 seconds to router Philadelphia.
  • Configure EIGRP so lost routes are stuck-in-active if you don’t get a reply to your query in 2 minutes.

It took me 1000s of hours reading books and doing labs, making mistakes over and over again until I mastered all the protocols for CCNA.

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You will learn all the secrets about EIGRP, timers and more.

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IOS:

c3640-jk9s-mz.124-16.bin

Topology:

EIGRP Timers

Video Solution:

Configuration Files

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Once you are logged in you will find the configuration files right here.

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Written by René Molenaar - CCIE #41726

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About the Author: Rene Molenaar

René - CCIE #41726 is the creator of GNS3Vault.com where he shares CCNA, CCNP and CCIE R&S labs. He also blogs about networking on http://networklessons.com

11 Comments

  1. Hi Rene

    An incorrect video has been posted on this lab page. The video should have been for ‘EIGRP Timers’ Instead another video has been linked to this page. ‘On Demand Routing lab in GNS3’

    thanks/Mohammed

  2. Hi Rene

    It will be so easy for us ;if you do each lab and apply the command to show where it has been changed the output. Like “show ip protocols” or “show ip eigrp interface details”. Because lot’s of troubleshooting issue will be resolved by your fantastic labs. I appreciate your oncoming video recording will be more focus on troubleshooting tips and how to check each output..

  3. Hi, Brother
    Can you please tell me how to validate hold- down timers after changing it.. as per Cisco it should be visible in sh ip eigrp nei command, but after changing my hold down this is output which i get, which is same as default settings..

    Boston#sh ip eigrp nei
    IP-EIGRP neighbors for process 10
    H Address Interface Hold Uptime SRTT RTO Q Seq
    (sec) (ms) Cnt Num
    1 192.168.13.3 Fa1/0 13 00:00:11 32 200 0 13
    0 192.168.12.2 Fa1/1 11 00:00:13 40 240 0 12
    Please suggest.. thanks in advance.

  4. [quote]Can you please tell me how to validate hold- down timers after changing it.. as per Cisco it should be visible in sh ip eigrp nei command, but after changing my hold down this is output which i get, which is same as default settings.. [/quote]

    Did you check the neighbor of this router as well? Take a look and see if there’s anything different after changing the timers.

  5. Hi Rene,
    for Router Boston to have a holddown timers of 9 seconds for all neighbors.
    holddown timer should be configured on all neighbour.
    as in the final config it is configured on Boston, so neighbours will have holddown time of 9s for Boston.

    Regards
    Shoeb

  6. Agreed… to make router Boston have hold-down timers of 9s for all neighbors, you should configure the hold-down timer on the neighbors.

    To make all neighbors have a hold-down timer of 9s for router Boston, configure it on Boston.

    I think it was just the wording that could be confused, depending on how you read it.

  7. Dear Rene ,
    which command I can use to see value of hello and hold intervals on an interface.
    Thanx

Comments are closed.