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EIGRP IP Default Network

Written by Rene Molenaar on . Posted in EIGRP

Scenario:

As the network engineer for your Cisco-only network you run into a strange problem. Some of the routers have been replaced and have empty configs and per configuration template you need to configure EIGRP IP Default Network. Some of the older routers still run IGRP and are unable to advertise default routes, in order to keep all configs on routers the same you are forced to use the older "IP Default Network command". One of your colleagues still has an output from an old "show ip route" command which will show you what you need to achieve.

Goal:

  • All IP addresses have been preconfigured for you.
  • Configure EIGRP AS12 as following:
    - Do not disable auto-summarization.
    - Advertise network 172.23.23.0 /24
    - Advertise network 10.12.12.0 /24
    - Do not use any other network commands.
  • You have completed this lab when you see the following when you type "show ip route" on router Erik:

 Gateway of last resort is 10.12.12.2 to network 172.33.0.0

IOS:

c3640-jk9s-mz.124-16.bin

Topology:

EIGRP IP Default Network

Video Solution:

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Comments (8)

  • avatar
    mahirali
    2011-02-12 22:27:32

    Can I post answers to the labs or it is prohibited?

    Regards
    Mahir

  • avatar
    aaaa2209
    2011-05-08 03:59:18

    I would like to know the answer. Can't figure it out..

  • avatar
    ReneMolenaar
    2011-07-21 09:23:14

    I just added the final configs and the video solution.

  • avatar
    alt_de_lete
    2011-07-23 15:16:46

    dont know where to download c3640-jk9s-mz.124-16.bin to complete the lab

  • avatar
    alt_de_lete
    2011-07-23 15:17:49

    cant find # c3640-jk9s-mz.124-16.bin to complete the lab. any ideas?

  • avatar
    ReneMolenaar
    2011-07-25 12:53:24

    Hello Tosin,

    I can't help you with finding an IOS but any 3600, 3700 or 7200 image will let you run EIGRP so it doesn't matter which one you'll use.

    Good luck!

    Rene

  • avatar
    tek_tek
    2012-05-13 09:46:10

    Hi,

    we can use

    Jan(config-router)#redistribute connected

    then

    Jan(config)#ip default-network 172.33.0.0

    thanks

  • avatar
    ReneMolenaar
    2012-05-16 09:25:31

    That will work, you can also do this:

    Code:
    ip route 0.0.0.0 0.0.0.0 null0
    Code:
    router eigrp
    network 0.0.0.0