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)
Network users are complaining that they cannot access resources on the LAN attached to interface e0 ofthe Production router. Which of the following commands will display current IP addressing and the Layer 1 and Layer 2 status of this interface? (Choose three.)
A.
Production# show version
B.
Production# show protocols
C.
Production# show interfaces
D.
Production# show controllers
E.
Production# show ip interface
F.
Production# show startup-config
Some say answer is BDE and some say is CDE ????
which one is true
Just answered my own question. Since this is discontiguous network, no auto-summary will make sure it is not summarized at class C (/24).
OK for Case 2 I think I got it! the reason why network 192.168.66.0 is applied to R1 is because it’s directly connected to Fa0/0 so it will learn network 192.168.48.0 because R3 is already sharing the information for there LAN network.
Thanks God i just passed my ccna today with 854. umm EIGRP lab was there same as here but the R1 show running config didn’t have the 2 networks you are seeing here.
I just passed my ccna yesterday with a 933..Thanks to the most high, determination, and 9tut. The labs were eigrp, vtp cli, ACL2..all nearly identical!
i want the network that you have to remove from the R1 please i need reply.
how to check that eigrp then is working properly ???!!
I couldn’t open the EIRGP SIM in Packet Tracer 5.3. The error reads, “.pkt file is not compatible with this version of the packet tracer”.
Please help. I need this SIM for practice.
Same here. I have 5.3.2 installed and I can’t open the file either.
Passed today 907/1000
EIGRP lab: They put router eigrp 221 instead of 212
Also no router eigrp 221 will not work. Will get error message “Command not implemented in the sim”.
@Tharun George
Could you please explain how did you manage to fix it in that case?
failed exam yetrday.. :(
attempted eigrp sim. but was not able to ping all users even after complete configration. :(
wanna take retest… can any1 tell do i need to pay again 295$ to write the exam???????
I couldn’t open the EIRGP SIM in Packet Tracer 5.3. The error reads, “.pkt file is not compatible with this version of the packet tracer”.
Please help. I need this SIM for practice.
Thanks
Passed CCNA today 933/1000 thanks to all Mighty Allah
Same lab today EIGRP
-AS was 221 to be set on R3
and
- removed one network from R1 router and add the correct one.
I will pass exam end of May , please send me the latest dumps in :
tn.touareg@live.tn
I will pass exam end of May , please send me the latest dumps in :
tn.touareg@live.fr
I will pass my CCNA exam in end of this Month :
please send me the latest dumps in :
kachmido@gmail.com
Hi guys I need your help, on the lab there is a link that says you can download this sim to practice on lab. when I click on the link it doesn’t open. Can anyone tell me how to open the lap so I could practice and pass the CCNA test. Thanks in advance!! you could also email me at ahsan25@gmail.com I really need help with laps.
Passed today with 933/1000. What a relief and weight off my shoulders. Just finished the boot camp for CCNA. Studied Sekar, read the book by (lamlle) cover to cover, and 9tut. My advise to all taking exam soon. Read the book, take a course. People just study Sekar and think they know CCNA, you don’t. Trust me, it will benifit you in the long run.
Alpha
I failed my exam. please send me the latest dump in “ehasima@hotmail.com”
thanks a lot…
@Zahid Ismail which network did you remove and which network did you add.i need reply.
Failed 640-822 today, 762. I think I got unlucky with the Sims and drag and drop. None of the 3 sims here were on there and of all the drag and drops that I went through… only ONE was published of the FOUR that was on there. I have never seen the other three in my life. If anyone has updated drag and drop or sims please email at don_powell3@yahoo.com
Can someone please send me the ccna dump to help with labs. I take ccna wednesday may 8
can someone please send me the lastest dump pmack7000@gmail.com I need help with labs, i take the ccna wednesday may 8, thanks in advance.
In the exam are you suppose to be able to ping the ISP? I could not get it to work? EIGRP seems easy here but, in the exam it does not behave like it does in the real world. Anyone else have these problems or know the solutions??? Thanks!!!
This is really an efficient website for the learners …. Thanks to 9tut.com I am Writing CCNA Exam Tomo .. Wish me all the best guyzzz ;)
This is really an efficient website for the learners …. Thanks to 9tut.com I will Write CCNA Exam Tomo .. Wish me all the best guyzzz ;)
Can you tell me what version of PT we need for this Tut? I have 5.3 but it says doesnt have the correct version
Any Help appreciated :)
Thanks
GSD, I had the same issue with not being able to ping the ISP. After fixing all EIRGP errors, I could not even get R1 to ping to ISP, even though I was able to ping freely in between all other routers. The only thing that would make sense would be that the cable was shutdown or the interfaces were inacurrately configured, as the issue was even from R1 to ISP. All other settings such as passive-interface or default network settings I believe were correct. Ideas?
Can anyone tell which version Packet Tracer will open EIGRP labs given here. I am using 5.3 gives an erorr saying not compatible.
Thank you 9tut, today I passed with a great mark, a lots of question from this site. simulation was eigrp, VTP and access list. I got a problem on VTP to find the neighbour which sent the vlan information, #show VTP status did not show the ip of the vtp server!
Hi Darren,
You need PT version 5.3.3 which is latest
Thanks PK
Much Appreciated :)
I passed my CCNA today (13 May 2013). The sim came out during exam were VTP Sim, EIGRP Sim, and ACL Sim. Thx to 9tut.com and spike dump. Thx alot!!!!!!
passed my ccna exactly the same but a rogue network so remove this and add the correct one and the routers started talking to each other
@ccnacert – nice to hear you passed today. Could you please explain in little more depth what was the rouge network & how did you manage to get them working, thanks in advance
Can any body tell me if I take exam 640-802 today would it be valid for 3 years or my certification would be expired, when the new exam comes from oct1-2013 which is 200-120
It would be Valid for Three years.
Question to anyone who’s failed the CCNA 640-802 at the end does it tell you what you got wrong or what areas you are weak on?
@Kyle – right after the exam you will be given you score card indicating your score in each like IP services, IP routing technologies etc but it does not tell you which questions you did not answer corretly
Ok thanks I got it booked for 5th June but am worried the current dumps may not be the latest for June when do the new dumps get released
Am going to attend my CCNA exam by tomo.. Preparing only from 9tut.. Have to check on dumps.. 9 tut is helping me to understand the concept.. But what are all ways i should be thorough??
Please help me in my last minute preparation.. please
FYI: I am writing it for second time :(
I’m taking my exam this afternoon. I’ve been studying hardly for along 4 months and this website helped me a lot. I hope to pass it.
Hey Diehko dont worry man this exam was ment for us to pass am sure the 4 months u had put wiil pay u gud luck
hi, i have made the necessary changes on router 1 and 3, however router 4 and 3 are not having a communication among themselves. help!!!
pass on 17 / 05 / 2013
I got this SIM but wasn’t able to get to the other routers…… except router 1, it had the terminal to connect to
Has anyone taken the exam in the past few days? What SIM’s did you see?
Any problems with the SIM’s? Tips or tricks you learned?
TY
To sit for the ccna exam next month and i real need dumps pliz anyone with,send to email:olesimbe@yahoo.com. Thanks a lot!!.
slm can u tell me about the question u had ,regard samir. slm