CCNA EIGRP LAB Question
Question
After adding R3 router, no routing updates are being exchanged between R3 and the new location. All other inter connectivity and Internet access for the existing locations of the company are working properly.
The task is to identify the fault(s) and correct the router configuration 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 addresses are listed in the chart below.
| R1 Fa0/0: 192.168.77.33 S1/0: 198.0.18.6 S0/1: 192.168.60.25 S0/0: 192.168.36.13 |
R2 Fa0/0: 192.168.60.97 Fa0/1: 192.168.60.113 S0/0: 192.168.36.14 |
| R3 Fa0/0: 192.168.77.34 Fa0/1: 192.168.60.65 Fa1/0: 192.168.60.81 |
R4 Fa0/0: 192.168.60.129 Fa0/1: 192.168.60.145 S0/1: 192.168.60.26 |
Answer and explanation
(Note: If you are not sure how EIGRP works, please read my EIGRP tutorial: http://www.9tut.com/eigrp-routing-protocol-tutorial. Note: You can download this sim to practice here: http://www.9tut.com/download/9tut.com_CCNA_EIGRP_sim_question.zip)
We should check the configuration of the new added router first because it does not function properly while others work well. From the command line interface of R3 router, enter the show running-config command
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 R3 with the following commands:
R3>enable (you have to enter cisco as its password here)
R3#configure terminal
R3(config)#no router eigrp 22
R3(config)#router eigrp 212
R3(config-router)#network 192.168.60.0
R3(config-router)#network 192.168.77.0
R3(config-router)#no auto-summary
R3(config-router)#end
R3#copy running-config startup-config
Check R1 router with the show running-config command:
Notice that it is missing a definition to the network R3. Therefore we have to add it so that it can recognize R3 router
R1>enable (you have to enter cisco as its password here)
R1#configure terminal
R1(config)#router eigrp 212
R1(config-router)#network 192.168.77.0
R1(config-router)#end
R1#copy running-config startup-config
Now the whole network will work well. You should check again with ping command from router R3 to other routers!
Modifications:
Maybe in this EIGRP Sim you will see the “passive-interface …” command somewhere in R1 configuration. If the link between R1 to R2; or R1 to R3; or R1 to R4) routers has the “passive interface” then we have to remove it with the “no passive-interface …” command because it prevents EIGRP update from being sent on that interface. But if the “passive interface” is applied to the link between R1 and ISP router like this:
R1:
!
router eigrp 212
passive-interface s1/0
!
then we just leave it. Don’t use the “no passive-interface s1/0″ on R1 because the link between R1 & ISP doesn’t need EIGRP to run on it. A static route from R1 to ISP & “ip default-network” command in R1 are correct so that all the routers (R1, R2, R3, R4) can access the Internet.
(Note: The “ip default-network” command in R1 will advertise the static route of R1 (to go to the Internet) to other routers (R2,R3,R4) so that they can access the Internet too). In the exam you will see these lines in R1 configuration:
!
ip default-network 198.0.18.0
ip route 0.0.0.0 0.0.0.0 198.0.18.5
!
If you want to learn more about “ip default-network” command please read: http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094374.shtml
I read recent comments and realized that you will see the “passive-interface” in the link between R1 & ISP router so just leave it.
Note: Also some readers confuse about if we should use the wildcard masks on the “network” statements under EIGRP process or not. For example should we use:
router eigrp 212
network 192.168.77.0 0.0.0.3
The answer is: we can use wildcard masks or not, it does not matter. Not having a wildcard mask does not make the routes conflicting. The “network …” command in EIGRP (and OSPF, RIP) does not means “advertise this network” but means “If I has interface(s) belongs to this network please turn on EIGRP on that interface. Therefore when you don’t use wildcard mask EIGRP will turn on EIGRP on all interfaces that belongs to the network you specify in the “network …” command.
You should only use wildcard mask on EIGRP if you have 2 or more interfaces that belong to the same major networks but you don’t want to run EIGRP on all of them. For example if your router has 2 interfaces whose IP addresses are 192.168.30.1/28 and 192.168.30.17/28 but you only want to run EIGRP on the first interface, you can type “network 192.168.30.0 0.0.0.15″ under EIGRP process.
Other lab-sims on this site:
CCNA Configuration SIM Question (RIPv2 SIM)
Its urgent
@Prashanth
my dear
don’t worry about passive interface
see this up
I read recent comments and realized that you will see the “passive-interface” in the link between R1 & ISP so just leave it.
Just did my exam go 801/1000 :(
pass mark is 825 which basically means i was 1 question off.
- Sims were ACL2, EIGRP & VTP
ACL: pretty much the same as this sim but ips were different
EIGRP:my question was the group i need to make was”221″ also ips are different. and it had a passive interface on s0/1 which was the isp. my neighbours went up as soon as i configured and i could ping between routers so i left it.
VTP: Same pool of questions worded slightly different
Know your multiple choice is all i can say.
I used 9tuts sims and shekars brain dumps. (most questions are the same or similar)
Gonna try again on the 28th Dec. apparently cisco is gonna update the exam on Jan 12th 2013 according to pearson vue
mr lankiie don’t confuse us
Got 881 today…thanks God
Thanks 9tut for all the valuable materials…..
-Sims were similar…..ACL2, EIGRP and VTP
-Got some new qs but not that much hard if u understand the concepts
Happy holidays and good luck all :)
Today = 24th
@lankiie
Where did you get the information for ccna exam update ??? :-(
Do better things in your life and please stop trolling us
Hey, I failed.
If I take the exam again, do you know if the labs will be the same? (ACL2, VTP, EIGRP).
Thanks.
I was sit the CCNA exam on 20/12/2012 but i was failed because time management. I don’t have any doubts in every subjects. I am expert in every subjects and all dumps questions. Before i start the exam the exam administrator said to me the
1.total hours for the CCNA exam at non-English Countries is 2,1/2 hours. also
2.i was read one line when starting the exam “Non-english countries time automatically extended” So i thought after two hours time will extend.
these two reasons were failed of my CCNA exam, i doing the exam slowly and i did only 32 questions in within 2 hours. get 630 Marks Still 18 question need to do before that time was expired.
So guys don’t do like these types of mistakes next week i planed to do the exam again
The truth is that from January 13 base questions on certification renewed?
Something real wrong in this EIGRP Sim. I have been gone through Todd lamle and Reachard Deal and Cisco press book from last 9 moths. Also completed dumps. I tried this sim on packet tracer. But no neighbor-ship establishment between R1 and R3. Am i missing something?
What and how i did
R3(config)#do sh run
!
router eigrp 22
network 192.168.60.0
network 192.168.77.0
no auto-summary
!
R3(config)#no router eigrp 22
R3(config)#router eigrp 212
R3(config-router)#network 192.168.77.34 255.255.255.252
R3(config-router)#network 192.168.60.65 255.255.255.252
R3(config-router)#network 192.168.60.81 255.255.255.252
R3(config-router)#no auto-summary
R3(config-router)#end
R3#sh ip eigrp neighbors
IP-EIGRP neighbors for process 212
——————————————————————–
R1#sh ip eigrp neighbors
IP-EIGRP neighbors for process 212
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 192.168.36.14 Se0/0 14 00:07:24 40 1000 0 9
1 192.168.60.26 Se0/1 12 00:07:21 40 1000 0 9
—————-
Someone please reply! Thanks 9tut.com for this beautiful platform!
solved
R1(config)#router eigrp 212
R1(config-router)#network 192.168.77.34 255.255.255.252
R1(config-router)#
%DUAL-5-NBRCHANGE: IP-EIGRP 212: Neighbor 192.168.77.34 (FastEthernet0/0) is up: new adjacency
NAT, ACESS LIST, EIGRP, VTP Same Sim Come Repeatly Please Help Me………….?
i was sit exam on 28th dec and i was fail because my exam administrator said that if leave any question you can revue this question at end of all question but guys there are no option for revue any question so be careful .
Ola Pessoal, Vou Faze meu exame dia 04/01/2013, vi alguns comentarios que a cisco ira atualizar as perguntas e os sim. Sera que no dia 04 ja estarão atualizados??? alguem sabe alguma coisa a respeito?? desde ja grato!!
i got 986 out of 1000 in ccna exam.its a easy exam.
vtp,eigrp,acl.
eigrp
router eigrp 112
network 192.168.55.0
network 192.168.77.0
add network 192.168.55.0 to another router.
easy exam in my life,,,,,,,,,haaaaaaaa
Pessoal e verdade que a Cisco vai atualizar as perguntas em 2013?
Vou fazer meu exame na primeira semana de Janeiro de 2013? sera que eles vão atualizar?
question: would it have any difference if we use the wild card mask option on the network command? example network 192.168.1.0 0.0.0.3. does the exam require me to put that wild card mask option?
By the grace of GOD I have passed today with 907 / 1000 studied hard 4 3 months and plenty of thanks to 9tut, shekhar and brar for help.
*****Shekhar ******
labs were vtp, eigrp and acl2
eigrp lab was with passive-interface on the router but i was not able to make it no passive-interface.
I passed today.
All questions were the same as available on this site. I was shocked that I didn’t get 1000/1000
Sims were ACL2, EIGRP and VTP.
All thanks to Shekhar, Prepking and 9Tut. And not to forget Oussama sama whom sent me the sims I used.
Now I can delete my over 1Gig of dumps.
Can’t believe I waited so long to take the exam. CCNP, here I come
while using the copy run start command what should the destination file in the nvram be?
I failed my exam today just found this site, which really sucks because I skipped all three configuration questions and got a 683. If I would have known how much each SIM was worth, I would have studied for the SIM’s would have possibly gotten a 983 :(
Well I did the first SIM which was this one but forgot to negate the E.I.G.R.P 22 “45D1E0504″!!!!!
@JoeC: Please read http://www.9tut.com/ccna-faqs-a-tips
@9tut that’s how I found this site I Googled CCNA exam points and http://www.9tut.com/ccna-faqs-a-tips was the first link, that’s why I’m not to angry any more because if I would have just completed the SIM’s I would have destroyed the test. Just sucks that the last two questions were the SIM’s on the switch’s and the access list. I felt that I did very well on the questions so I thought I could afford to skip them arrogance is not good!!! P.S. I setup my retake for Tuesday do you think studying the SIM’s you have on the site are going to help?
@JoeC: Of course they will help you pass this exam. Also please read “Share your CCNA Experience” (http://www.9tut.com/share-your-experience) to learn new information about this exam.
JoeC você fez Seu exame agora no dia 03/01/2013, e cairam os mesmo sim que estou aqui no site 9tut.com?
can you send the latest dumps elmacanon90@live.com Pls!!
@Dore I didn’t study with VCE’s I read the Sybex Todd Lammle 7th edition book twice and also studied with the Cris Bryant UDEMY course. @Biro-Biro I cant read Portuguese but I understood a little of what you wrote.
JoeC, I wonder if you did your CCNA exam now days 03.01.2013? and fell the same but they are that sit 9tut.com?
I wonder if you did your CCNA exam now days 03.01.2013? and fell to the same are simulated that sit 9tut.com?
On the EIGRP sim, should routers R2, R3 and R4 be able to ping the ISP IP of 198.0.18.5?
After making the changes and getting the adjancencies up, I can ping the ISP from R1, but not the others.
Hi
Friends I did,t understand “Access to the router CLI can be gained by clicking on the appropriate host.”. should I do telnet.
After finishing lab I am not able to ping from host. But ping is ok from router to router.
can someone explain it
@Ron: You don’t need to type telnet, just click on the appropriate host to access the CLI.
@9tut
I understand the labs perfectly,but i have a question.Using 9tut labs,access to the router is gained by clicking on the router.In the real exam and for the example above,r u saying access to R3 can be gained by clicking on the host connected to R3 on Fa01/0?
@newbia
Yes, infact I have doubt abut that. In real time exam can I get access the CLI by simple clicking on router ? or how I can get access the CLI by using appropriate host ?
@newbie, Ron: In the real exam you can’t click on the routers. You can get access the CLI by clicking on the appropriate host connected to that router. For example in this EIGRP lab, just click on host G to access the CLI of R1.
@9tut
Thanx a lot
Hi, I start wondering why didn`t u use on R3 fa0/0 (connect to R1) summary command for that 2 networks behind R3 (Fa0/1: 192.168.60.65; Fa1/0: 192.168.60.81). It will be wrong when we send summary adress on real exam – in this case it could be: (config-int)# ip summary – address eigrp 212 192.168.64.0 255.255.224.0 5 ?
Sorry for this question but i want to be sure for 100% – what should I must do :)
All the Best
Pit
Can you send me the latest dumps please bdeepak12491@gmail.com
please show me how to routers R2 R3 R4 can ping the ISP please
Hung – The ISP needs a route back to R1 (ip route 0.0.0.0 0.0.0.0 198.0.18.6), and R2-4 needs a route to R1, then R2-4 should be able to ping ISP.
In the real exam, do we need to be able to ping the ISP? I’m sure you don’t have access to the ISP router in the real exam.
Real exam i can not close or move CLI. Can any one tell me how to do that ? thanks
@9tut. please how can i verify if Host C has been truly blocked in ACL2. how can i know if theres is no web access.after the configuration. Help me
eigrp was 22; otherwise the scenario remains the same
can the any one help me how check 4 passive interface on the eigrp sim
scored 651. so many tricks in my exam
1. The interface that has the finance server (fa0/1) was shutdown when I did the show run config. I couldn’t see the network. So I apply the int “S0/1 out” on the host instead of on the fa0/1. I dont know if its correct
Also, EIGRP is having passive-interface. So 192.168.77.0 couldn’t update. I tried and i know I have more then 6 commands.
Pls, someone should explain how to solve the two and also, if they request 3 commands and you use 5, will one lose mark
Thank you
@esteecee
PLease State EIGRP & ACL question completly so that we can help you properly