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EIGRP Stub

Written by Rene Molenaar on . Posted in EIGRP

Scenario:

A major soccer team in the UK is running EIGRP on their internal network. One of your colleague network engineers noticed that there are quite some EIGRP routers sending query packets and sometimes routers get stuck-in-active. Since you are an expert on EIGRP you'll have to configure the network using the EIGRP stub feature to make sure things work smoother...good luck!

Goal:

  • All IP addresses have been preconfigured as specified in the topology picture.
  • Each router has a loopback0 interface.
  • Use EIGRP AS 1 to configure on your routers.
  • Configure router Thomas so it receives EIGRP routes but doesn't advertise anything.
  • Configure router Harry so it only receives EIGRP routes and only advertises directly connected networks in EIGRP.
  • Configure router Alfie so it only receives EIGRP routes and only advertises summary route 4.4.0.0 /16 in EIGRP.
  • Configure router Jack so it only receives EIGRP routes and only advertises static routes.

IOS Image:

c3640-jk9s-mz.124-16.bin

Topology:

EIGRP Stub

Video Solution:

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Comments (21)

  • avatar
    ReneMolenaar

    Hi Breland,

    I will create the video solution for this lab this week so you can check my configuration.

    If you still have questions after that just leave a comment ok? :)

    Rene

  • avatar
    Breland

    Hello,

    Im not quite sure on which router's to place static routes. Also when using eigrp stub static, router harry will not advertise static routes unless the redistribute static command in used correct?

    Thanks

  • avatar
    ReneMolenaar

    The video is here, still have to put it in the article:

    http://www.youtube.com/user/GNS3Vault?blend=3&ob=5#p/u/0/ZMryQNCkOIY

  • avatar
    mcox50

    you are asking us to Configure router Jack so it only receives EIGRP routes and only advertises static routes.

    Jack doesn't have any static routes, you must be kidding us

    and why you don't use R1 R2 R3 R4 R5 R6 as names, instead of alfie and those bullshit names,i start hating your labs damn

  • avatar
    ReneMolenaar

    @Mcox I already responded to the router "names" question, read it here:

    http://gns3vault.com/OSPF/ospf-nssa-not-so-stubby-area.html

    I'm sorry to hear you don't know about the EIGRP "static" option, you can see the video to see what it does:

    http://www.youtube.com/user/GNS3Vault?blend=3&ob=5#p/u/0/ZMryQNCkOIY

    If you dislike what I offer for free and feel so annoyed I suggest you go to Google and find another site for labs.

    Good luck,

    Rene

  • avatar
    Sodki

    @mcox
    your comments are a bit too harsh!!
    We should be grateful for the work that Rene is doing on this site and should be appreciative.

  • avatar
    habibmadni

    @Rene
    Dear admin i consider ur work and its very well.
    keep it up

  • avatar
    Subunit

    Great labs and they're FREE
    Cool of you to take the time making video's to see correct config sequence.
    This will help greatly in taking the Cisco IP Route exam.
    if people doesn't like these labs they should either study harder or make their own.

  • avatar
    ReneMolenaar

    I'm glad to hear my material is appreciated!

  • avatar
    fahd

    Keep up the good work bro :)
    Your labs are really helpful in understanding the concepts completely
    I appreciate all your effort
    Thanks for everything :)

  • avatar
    breland_101

    Just wanted to mention that if you advertise the router jack lo0 as 3.3.3.0 255.255.255.0 and use the EIGRP stub static feature...in order for this to work you will need to redistribute static. However when advertising network as 0.0.0.0, the lo0 interface advertises just fine internally.....LOL just an FYI if you didn't already know.

  • avatar
    bluecavalry

    Looks like someone mentioned already. Solved.
    I experimented with it a little.

    If the network is advertised with one of these examples....
    network 3.3.3.0
    or network 0.0.0.0

    ....then the redistribute static command is NOT needed. But if the network command does not include the route, the "redistribute static" command is needed.


    I love these labs. They force me to think deeper into the situations. Thanks Rene.

  • avatar
    rdm1860

    I had a funny occurrence today. Background: I have been changing careers from working in non-profit into becoming a network engineer!! Big turn. Well, I have recently passed CCNA, working on CCNP because I think that is where the "meat" is, and all the while doing job interviews. Today at an interview at a NOC (I still am quite entry level), I did so well at the tech part of the interview, that they told me I was OVERQUALIFIED for the position!!!!!!

    In a funny way, I credit EXACTLY these hard labs as to why I know something....that is beyond the reading that I do 24/7!

    Thank you, and please: MORE, I'm addicted!

  • avatar
    tbear2520

    Just wanted to say thanks for all the hard work and time you have put into these labs. I currently have my CCNA and passed the CCNP Switching test. I also have the actual hardware for the CCIE topology from INE. But using these labs has really broaden my knowledge and hands on experience. While I do plan to go back to the hands on with the actual hardware, I find using these labs accelerate my learning in the CCNP routing area. As you mentioned many times, I am sure some of this material is CCIE level.

    It's much easier to use GNS3 and these labs than it is to try and reset your actual hardware and place new configs on them all. I have done it already in several different manners but GNS3 is by far the fastest and easiest. To bad switching is the way it is in GNS3.

    All in all thank you!

    Tbear

  • avatar
    ReneMolenaar

    Thanks for all your comments people, it's great to hear that my material is appreciated! 8)

  • avatar
    plague22

    Where are the labs on this page to download?

  • avatar
    ReneMolenaar

    I hope you found them by now :) Once you login they'll appear at the end of the article in the attachments.

  • avatar
    stunt4711

    Hello,
    Firstly, I would like to thank you for your great labs. I think the function "EIGRP stub static" supports only classful networks that's why 3.0.0.0/8 network works fine but 123.0.0.0/24 doesn't.

    Edit: If you add the "redistribute static" command you'll also redistribute classless networks

  • avatar
    ReneMolenaar

    Hmm not sure if it has to be classful or not. "EIGRP stub static" is a funny one. You still need to use "network" or "redistribute" command go get the static route into EIGRP before it will be advertised.