CCNA EIGRP Simulation (NEW)

After adding Interior router, no routing updates are being exchanged between Perimeter and the new location. All other inter connectivity and Internet access for the existing locations of the company are working properly.

image
The Task is to identify the fault(s) and correct the router configurations to provide full connectivity between the routers.
Access to the router CLI can be gained by clicking on the appropriate host.
All passwords on all routers are cisco.
IP Address are listed in the chart below
image



Steps
  1. Remove invalid Autonomous System Number and add the correct Autonomous System Number Interior router.

    The Autonomous System Number is found in the topology:

    eigrp
  2. Add the network address of Fa0/0 interface of Perimeter router in EIGRP configuration. Because EIGRP neighbor relationship is not possible without the configuring connected interfaces.

Answer
Commands
First we should check the configuration of the Interior Router.
Click the console PC “F” and enter the following commands.

Interior> enable
Password: cisco
Interior# show running-config
Building configuration...

Current configuration : 770 bytes
!
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Interior
!
enable secret 5 $1$mERr$hx5rVt7rPNoS4wqbXKX7m0
!
interface FastEthernet0/0
ip address 192.168.77.34 255.255.255.252
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 192.168.60.65 255.255.255.240
duplex auto
speed auto
!
interface FastEthernet1/0
ip address 192.168.60.81 255.255.255.240
duplex auto
speed auto
!
router eigrp 22
network 192.168.77.0
network 192.168.60.0
no auto-summary
!
ip classless
!
line con 0
line vty 0 4
login
!
end
Interior#

From the output above, we know that this router was wrongly configured with an autonomous number (AS) of 22. When the AS numbers among routers are mismatched, no adjacency is formed.
(You should check the AS numbers on other routers for sure)
To solve this problem, we simply re-configure router Interior router with the following commands:

Interior# conf t
Interior(config)# no router eigrp 22
Interior(config)# router eigrp 222
Interior(config-router)# network 192.168.60.0
Interior(config-router)# network 192.168.77.0
Interior(config-router)# no auto-summary
Interior(config-router)# end
Interior# copy running-config startup-config


Second we should check the configuration of the Perimeter Router.
Click the console PC “G” and enter the following commands.

Perimeter> enable
Password: cisco
Perimeter# show running-config
Building configuration...

Current configuration : 1029 bytes
!
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Perimeter
!
enable secret 5 $1$mERr$hx5rVt7rPNoS4wqbXKX7m0
!
interface FastEthernet0/0
ip address 192.168.77.33 255.255.255.252
duplex auto
speed auto
!
interface Serial0/0
ip address 192.168.36.13 255.255.255.252
clock rate 64000
!
interface Serial0/1
ip address 192.168.60.25 255.255.255.252
clock rate 64000
!
interface Serial1/0
ip address 198.0.18.6 255.255.255.252
!
interface Serial1/1
no ip address
shutdown
!
interface Serial1/2
no ip address
shutdown
!
interface Serial1/3
no ip address
shutdown
!
router eigrp 222
network 192.168.36.0
network 192.168.60.0
network 192.168.85.0
network 198.0.18.0
no auto-summary
!
ip classless
ip route 0.0.0.0 0.0.0.0 198.0.18.5
!
line con 0
line vty 0 4
login
!
end
Perimeter#

Notice that it is missing a definition to the network Interior. Therefore we have to add it so that it can recognize Interior router

Perimeter# conf t
Perimeter(config)# router eigrp 222
Perimeter(config-router)# network 192.168.77.0
Perimeter(config-router)# end
Perimeter# copy running-config startup-config


Now the whole network will work well. You should check again with ping command from router Interior to other routers!

In Short:

Interior Router
Interior>enable
Password: cisco Interior# conf t
Interior(config)# no router eigrp 22
Interior(config)# router eigrp 222
Interior(config-router)# network 192.168.60.0
Interior(config-router)# network 192.168.77.0
Interior(config-router)# no auto-summary
Interior(config-router)# end
Interior# copy running-config startup-config



Perimeter Router
Perimeter>enable
Password: cisco Perimeter# conf t
Perimeter(config)# router eigrp 222
Perimeter(config-router)# network 192.168.77.0
Perimeter(config-router)# end
Perimeter# copy running-config startup-config

Download Lab file (requires packet tracer)
https://app.box.com/s/ge2m805g441q3eun4agu


Some Modification in Question
After adding Interior router, no routing updates are being exchanged between Perimeter and the new location. All other inter connectivity for the existing locations of the company are working properly. But Internet connection for existing location including Remote1 and Remote2 networks are not working.
Faults Identified:
1. Incorrect Autonomous System Number configured in Interior router.
2. Perimeter router does not advertise route to the new router Interior.
3. Internet Connection is not working all stations.
We need to correct the above two configuration mistakes to have full connectivity

Steps:
1. Interior Router: Change the Autonomous System Number of Interior
2. Perimiter Router: Add the network address of interface of Permiter that link between Perimeter and Interior.
3. Perimiter Router: Add default route and default-network.

Check the IP Address of S1/0 interface of Perimeter Router using show running-config command. (The interfaced used to connect to the ISP)
!
interface Serial1/0
ip address 198.0.18.6 255.255.255.252
!


For Internet sharing we have create a default route, and add default-network configuration. The IP address is 198.0.18.6/30. Then the next hop IP will be 198.0.18.5.

Interior Router

Interior>enable
Password: cisco Interior# conf t
Interior(config)# no router eigrp 22
Interior(config)# router eigrp 222
Interior(config-router)# network 192.168.60.0
Interior(config-router)# network 192.168.77.0
Interior(config-router)# no auto-summary
Interior(config-router)# end
Interior# copy running-config startup-config



Perimeter Router
Perimeter>enable
Password: cisco Perimeter# conf t
Perimeter(config)# router eigrp 222
Perimeter(config-router)# network 192.168.77.0
Perimeter(config-router)# exit

Perimeter(config)# ip route 0.0.0.0 0.0.0.0 198.0.18.5
Perimeter(config)# ip default-network 198.0.18.0
Perimeter(config)# exit

Perimeter# copy running-config startup-config



Important:

If you refer the topology and IP chart, the Perimeter router uses Fa0/0 to connect Interior router, S0/0 used to connect Remote1, and S0/1 used to connect Remote2.

Refer to the command show running-config, the command #PASSIVE-INTERFACE <Interface Name> will deny EIGRP updates to specified interface. In that case we need to use #no passive-interface <Interface Name> to allow the routing updates to be passed to that interface. For example when used the #show run command and we see the output like below.
!
router eigrp 22
network 192.168.77.0
network 192.168.60.0
passive-interface FastEthernet 0/0
passive-interface Serial 1/0
no auto-summary
!


Then the command would be

Perimeter(config)#router eigrp 222
Perimeter(config-router)#no passive-interface Fa0/0 Perimeter(config-router)#end
Also Perimeter router connect to the ISP router using Serial 1/0. If you seen passive-interface s1/0, then do not remove it using #no passive-interface s1/0 command.




Download Lab file (requires packet tracer)
https://app.box.com/s/xzb7e8chu1417vsoj5t7
http://www.4shared.com/file/kv6xJsPU/EIGRP_Sim.html

64 Responses so far.

  1. Thanks so much these labs are very helpful

  2. Ashxheat says:

    you just need a route back from the isp router to the perimeter router else this simulation will not form full connectivity in any way

  3. Perimeter(config)# ip route 0.0.0.0 0.0.0.0 198.0.18.5
    Perimeter(config)# ip default-network 0.0.0.0
    Perimeter(config)# exit


    not ip default-network 198.0.18.0

    or you can use this method :

    Perimeter(config)# ip route 0.0.0.0 0.0.0.0 198.0.18.5
    Perimeter(config)# router eigrp 222
    Perimeter(config-router)# network 192.168.77.0
    Perimeter(config-router)# redistribute static
    Perimeter(config-router)# end

  4. Arun says:

    Guy i uploaded 2 lab files above.

  5. I downloaded the lab file, but im getting this msg: file is not compatible with this version, i am using Cisco Packet Tracer5, should i upgrade to newer version?? plz help

  6. Skt says:
    This comment has been removed by the author.
  7. Ok, there is something wrong with configuration of S0/0 on ISP router and the same applies to S1/0 of the Perimeter router.
    Instead of this:
    !
    interface Serial1/0
    ip address 198.0.18.6 255.255.255.252
    !
    we get this on PT lab file:
    !
    interface Serial1/0
    ip address 198.0.18.6 255.255.255.0
    !

    In other words /24 not /30 on both serial interfaces of the ISP and Perimeter routers.
    After trying mentioned modifications nothing helped. Running config doesn't show if serial 1/0 is passive or not. Any other thoughts of how to establish WEB connection to ISP from any of the PC's?

  8. sumit says:

    how to check internet connection after configuring default route? EIGRP lab

  9. Anonymous says:

    You just need to ping the ISP router from another router ex: Remote1 & Remote2

  10. Anonymous says:

    can you please share some other links for EIGRP Sim New.pkt ? Thanks

  11. Anonymous says:

    please upload the pkt. file again on another server i couldn't download it anymore

  12. Anonymous says:

    I can not download this lab :(

  13. Anonymous says:

    I can not download this lab :(

  14. Anonymous says:

    Can anyone give a reason why we don't see gateway of last resort set on gateway router even if we configured ip-default network and 0.0.0.0 0.0.0.0 ip add of isp port???....this is in regards to the EIGRP simulation question............I really appreciate for your timely response!

  15. Anonymous says:

    The link
    https://app.box.com/s/xzb7e8chu1417vsoj5t7
    is out of bandwidth. Please upload to other host.
    Thx
    Keep the good work.

    Hugs

  16. Anonymous says:

    Can someone upload the LAB file... the link is out of bandwidth.


    Thanks

  17. Anonymous says:

    Here is the EIGRP Lab for packet tracer

    http://www.4shared.com/get/VVZAbq8M/EIGRP_Sim.html

  18. Anonymous says:

    @Anonymous
    Thank You for the 4shared link

  19. Anonymous says:

    don't we have to configurate "redistribute static" to pass the default route to the other routers?

  20. vavou says:

    i wanna know how to remove the autonomus system number of the router i mean the process

  21. Adi says:

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  22. Anonymous says:

    Dear brother khaled ben hammouda ,
    Thanks a lot for your help . I tried many times & spent too much time but failed but when i tried your 2nd solution redistributed static than it worked . May God bless you & keep you happy ever.
    Regards: M.Raheel

  23. Anonymous says:

    But Dear Khaled ,one thing i want to ask that what network IP address will be there in static route instead of 192.168.77.0 ,if the IP address of Perimeter will be different ,i mean to ask why we gave 192.168.77.0 IP ??
    If in exam these ip will not be there than which iP will be chosen as .77 network is used by Perimeter & Interior router .
    Please help
    Regards:M.Raheel

  24. m0bi says:

    Passed 200-120 exam Today with 958/1000. Do not waste time and money guys only testinside Purchased 100% valid dumps Lab was ACL2 Modifications & EIGRP with few but Same.
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  25. Anonymous says:

    Firstly I want to commend the folks who put this site together for providing such informative information. However, the network configuration information on the interior router is incorrect for the EIGRP Routing Protocol.


    The network ID's for the EIGRP process should be as follows:


    router eigrp 222

    network 192.168.77.28 0.0.0.3
    network 192.168.60.24 0.0.0.3
    network 192.168.36.12 0.0.0.3
    network 198.0.18.4 0.0.0.3
    no auto-summary

    Please note you can only advertise network ID's for which the Router has a directly connected interface

    The following networks do not exist on the Interior Router (typing the command show ip route connected will identify the true Network/Subnet ID's

    router eigrp 222
    network 192.168.36.0
    network 192.168.60.0
    network 192.168.85.0
    network 198.0.18.0

    Hope this helps; good luck in your Cisco Certification

  26. Anonymous says:

    My apologies I stated Interior earlier; the configuration given is for the Perimeter Router

  27. Anonymous says:

    Per Cisco website http://www.cisco.com/en/US/tech/tk365/technologies_q_and_a_item09186a008012dac4.shtml#one
    Q. Does EIGRP require an ip default-network command to propagate a default route?
    A. Although EIGRP can propagate a default route using the default network method, it is not required. EIGRP redistributes default routes directly.

    So why is the default-network command being used here?

  28. Anonymous says:

    @Anonymous
    My thoughts exactly, I thought EIGRP could/can propagate a default route using the default network method.

  29. Anonymous says:

    Hello Dears,
    There is something needs to be clarified in the EIGRP Lap attached:
    The route 198.0.18.0 is actually missing in the EIGRP 222 on the Perimeter router "it's not as displayed above under show ip route"
    You'll find instead another route 192.168.85.0 (Don't know what this has to do with the configurations) ??
    Please advise?
    BR
    Hussein

  30. Anonymous says:
    This comment has been removed by a blog administrator.
  31. Anonymous says:
    This comment has been removed by a blog administrator.
  32. Anonymous says:
    This comment has been removed by a blog administrator.
  33. Anonymous says:

    i just passed exam scored 1000/1000 … Thanks to 9tut, examtut and spintry…. for the excellent resources ….

    sims : ACL 1 , 2 & EIGRP

    Must read Etherchannel: for new Q,,,,

  34. Anonymous says:

    Hi all, I'm not clear about below.

    Also Perimeter router connect to the ISP router using Serial 1/0.
    If you seen passive-interface s1/0, then do not remove it using #no passive-interface s1/0 command.

    Dose it mean, remove only ==> Perimeter(config-router)#no passive-interface Fa0/0.
    And, must be keep ==> passive-interface Serial 1/0, right?

    So, after show run shoos be same below, right?

    !
    router eigrp 222
    network 192.168.77.0
    network 192.168.60.0
    passive-interface Serial 1/0
    no auto-summary
    !

    Plezzzzzzzzzzzzzzzzzzzz

  35. I just used..
    ip route 0.0.0.0 0.0.0.0 198.0.18.5

    And it's working..
    Thanks a lot

  36. Fouad Dar says:

    i have activated eigrp 222 on isp router and it works fine

  37. Beso says:

    i think ip default-network .... or .... ip route 0.0.0.0
    and no need for redistribute because we need it only when ospf running
    ؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟

  38. Anonymous says:

    Address: 198.0.18.6 11000110.00000000.00010010.000001 10
    Netmask: 255.255.255.252 = 30 11111111.11111111.11111111.111111 00
    Wildcard: 0.0.0.3 00000000.00000000.00000000.000000 11
    =>
    Network: 198.0.18.4/30 11000110.00000000.00010010.000001 00 (Class C)
    Broadcast: 198.0.18.7 11000110.00000000.00010010.000001 11
    HostMin: 198.0.18.5 11000110.00000000.00010010.000001 01
    HostMax: 198.0.18.6 11000110.00000000.00010010.000001 10
    Hosts/Net: 2

    NETWOK address will be ...18.4 instead of 18.5

  39. Anonymous says:

    Admin plz inform me, i think the default network should be 198.0.18.4 instead of 198.0.18.0,,plz correct me if i am wrong

  40. Anonymous says:

    labs are Still Valid, I got 1000/1000 yesterday (25th)

    I got 3 sims ACL1,ACL2 and EIGRP (212). please read questions carefully and hard work.
    Thanks examtut.

  41. Anonymous says:

    You can't use the #show run command on a CCNA exam!
    Use sh ip protocols or sh ip eigrp instead.

  42. Anonymous says:

    ok can i say something does any of you know how the ip default-network command works beucause from what i can see here no one knows even the person who made this tutorial. Have a look here http://blog.ipexpert.com/2010/03/29/eigrp-ip-default-network-command/.
    Anyway i don't know if any of you noticed but from this tutorial and from that video, you did not show the route to ISP and if it has a ping in ISP, if you look cosly you dont have a route to internet, and you do not advertise a default route into your domain with these commands: ip route 0.0.0.0 0.0.0.0 198.0.18.5 and ip default-network 198.0.18.0, i recommend you guys learn more about how these commands work, If you want ip default-network to work(without redistributioin) first you have to do on a classful network and that network must be in EIGRP( Ex: D. 1.1.1.1 /25 via 2.2.2.2), because if its not it will not be propagated into the whole domain, and secondly if it a classles network , then it gets complicated because when u issue the command a static route appears towards the classful net add of the classless net adress, then u have to redistribute and issue the comand n the other router from what i remember. anyway its a pin in the ass dont know what was cisco thinking when it was implelented.
    just use : ip route 0.0.0.0 0.0.0.0 198.0.18.5 and redistribute static
    or
    ip route 0.0.0.0 0.0.0.0 198.0.18.5 and put the the command r(config-router)#network 0.0.0.0

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  44. Anonymous says:

    i had passed my ccna exam with 972/1000 score on 12 feb.
    the labs were acl1,acl2 and eigrp
    acl 1 (same as it is)
    eigrp (just change od AS and advertising a network (same as it is) with NO issue about passive interfaces and default network )
    acl 2 (with bit modification)

    "The task is to create and apply a numbered access-list with no more than three statements that
    -> will allow ONLY host A web access to the Finance Web Server.
    ->All other traffic from A to finance server is denied.
    ->All traffic from lan servers(B,C,D) and core to the Finance Web Server is denied.
    -> All other traffic is permitted to public server.

  45. brown says:

    Guys, i am remote and is difficult for us this way to purchase the vce software to read the dumps. Please can anyone do a favore by sending it to me at browntoto14@yahoo.com
    Thanks

  46. I practice the lab and i saw without advertise 198.0.18.0 or 198.0.18.4 network on EIGRP 222 I can't get Internet access from remote 1, remote 2 and also Interior routers. Does my answer complete the question without adding
    1) ip route 0.0.0.0 0.0.0.0 198.0.18.5 and
    2) ip default-network 198.0.18.0
    ????
    please someone answer me

  47. Anonymous says:

    Hi Gents, Where can I find ACL1, ACL2 and EIGRP sims ? Thank you in advance. Rgds

  48. Morik says:

    Hi Everyone,
    I pass CCNA today with 972/1000 and dump is valid also the all IP and number AS eigrp 12.
    Thanks a lot at examtut and 9tut.
    God blesse you.

  49. Anonymous says:

    Can anyone please tell us how to download the sim. In one of the recommended downloads its asking me to 'run' it. Is this alright or not?

  50. Anonymous says:

    Scored 1000/1000. EIGRP lab was tough, some of the modifications were new, not mentioned here. Just know your concepts and you can do well. If anyone needs any kind of help or guidance on how to score full, add me on skype mohsin.jawed
    Peace off !!!

  51. Anonymous says:

    IN eigrp lab how do we know about the isp's ip address which is connected to the router perimeter's interface

  52. Anonymous says:

    can we just add the default route to perimeter router for internet connection in isp even if there is a route for it or not...

  53. Anonymous says:

    hello!!!

    Anyone know that scenarios come in the exam, and that things are different from the examples on this page?

    Thanksss°°°°

  54. For the modification

    I noticed internet access can be rectified by

    eigrp 222
    Network 198.0.18.0

    On the perimeter router.

  55. puran says:

    Passed today with 1000.
    Simulation was EIGRP with network statement missing and AS number incorrect.
    Edge router to ISP was already configured for Default network and Static route to ISP. EIGRP was also defined for the network of ISP.. so no need to do anything except configuring EIGRP correctly in 2 routers.
    Serial interface towards ISP in edge router was with passive interface command, but still, worked without disabling that. Serial interface was disabled so couldnot even go into the interface.. all the dumps are 100% valid. thanks all.

  56. Anonymous says:

    For this SIM:
    IPs were different. AS number was giver 212 . router name were different.
    Perimeter Router had already configured for EIGRP network for ISP.
    final verification can be done by pinging all router and exit interface towards ISP in perimiter Router.
    Serial interface towards ISP was disabled so can't login (actually don need to login)
    Passive interface was defined on this serial port, however the passive interface disable command was disabled. EIGRP , Default, Network, and Statis route was already defined for the ISP network. .... don't get confused trying to add redistribute static command as that was also disabled. only thing had to be done was correct the router conf in perimeter and remote

  57. Anonymous says:

    How can we test if we have internet connection in ISP as for my testing its all Server Reset Connection. Though through the use of
    route eigrp 222
    network 198.0.18.0
    I can ping the ISP is it enough or do i need to configure something else to have the internet connection.
    Please answer
    thank you very much!

  58. ACL1 ACL2 EIGRP
    https://www.youtube.com/watch?v=FO3eD6oAIRQ&index=2&list=PLW2Xk7jJ5ZSoFn2G_x0ql_S5AlKvaDaOZ

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