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)
Hello All,
Cleared my exam on 20th June 2014, 986/1000,
thanks to 9tut :)
Dumps i referred – Matthew, waston, examtut(All qiestions are from dumps only – total 51quest)
Labs i got in exam – ACL, ACL2 and EIGRP
Regards,
Keep rocking :p
I Had Cleared this exam with 953/1000
ACL, ACL2 and EIGRP
thanks to all
For those who like to know about how cisco exam software looks like, here is the link for you.
http://www.cisco.com/web/learning/wwtraining/certprog/training/cert_exam_tutorial.html
I will sit the exam on 26/06/14, and I would like to know how many questions that I would expect in the exam.
Thanks
i just downloaded ths sim. and corrected all mistakes . thn wher to check the command in router 3 to check ths eigrp is workin correctly?… can any one tell ths.
then ths sim. is just to check the eigrp advertisement r to check the connectivity between host and internet?? reply plzz…
GOT 1000/1000 24june2014
CCNA exam is so easy i took this without any pressure ACL1 same ACL2 different Ips 3rd modification eigrp different AS value and totally different Ips topology diagram is al little bit change DNS server was not included OK chill man!!!!!
can any one tell me that ip table for all interfaces of router is given
Thanks 9tut, i passed with 1000 (yesterday 25 juny 2014)
All questions of 9tut and lab sim : acl,acl2 and eigrp
With passive in Internet interface( not execute no passive) and a one network diferent ( execute no network this network wrong)
@sergio wat type of question u got in eigrp lab sim.. whether the passive interface to be remove frm internet router r just leave it. ? ….
@sergio for checkin we hav to check ths command ” sh ip eigrp nei ” in router r3 to check ths all networks r advertised.. thts enough for verification r ther s any other thing shud b done in ths eigrp lab sim. reply plzz
Thanks 9tut, i passed with 972/1000 yesterday
All questions from 9tut and Watson dumps.
SNMP
NEtflow
Syslog
1 Etherchannel Question. 9tut (New CCNA – New Questions 2, Question 2 )
2 drag and drop questión.9tut (Drag and Drop 5, Question 1 and 5)
and lab sim : acl,acl2 modification 3 and eigrp
EIGRP with AS number incorrect in R3. Passive-interface in the the link between R1 and ISP (Don´t use the “no passive-interface) . R1 with one network missing and one network that does not exist (execute no network to eliminate).
Study and practice and you will pass!! Thank you 9tut!!
can any one suggest me how to prepare for the simulation i m having fear abt that
acl2 mean?????
taking up ccna on june 30.. guide me plss !! which lap to c.. and is there two labs in access list if so pls put link gimme link .. hv seen eigrp and one access list lab .. but reading below comments i c that there is 2 lab in access list .. pls put link and help me to clear this …
‘passed my CCNA exam yesterday with a score of 972.
i’ve never been so happy :)) well anyways…
The exam has 51 questions. Labs were:
ACL1 – same as here at 9tut
ACL2 – it was a modification 3 (got wrong in 2nd syntax, so my suggestion is to read CAREFULLY in every instructions on this one and use the appropriate modification)
EIGRP – a slight change in topology, with an AS# of 12 (accg to my exp, instead of adding a network in Router1, you have to replace the wrong network by the network given in Router1)
these are things that helped me a lot:
Training Center, CBTNuggets Tutorials by Jeremy, 9tut (much appreciated! ^_^), Watson, Matthew & P.Tracer
I hope this helps :)
________________________________________________________________________
“Nothing great was ever achieved without enthusiasm.”
- Ralph Waldo Emerson
Hi,
in this lab, how do we access the router, from telnet or enter the router?
Sorry…
Ricardo
to access the CLI of a router, it is thru the PC that is connected to the router via console.
thank u all for the dumps, am practicing the dumps right now cos i will definitely write the exam by Friday 04/July/2014…….. wish to share the good news with u guys soon.
plz wish me GOODLUCK
how do I test to make sure configuration works. which interfaces do I ping
example is pc> ping 192.168.77.33?
%check on router .. click router 1 (console) #ping 192.168.60.65 and u can c the result.. try for all pc connecter..
This Sim was there for my exam
how many modfcatnin in eigrp?????
@ Rajnath
there would b a 2 modifications
@CCNA Passed
can we know the two modifications?
Thanks!
Hello Guys Thanks 4 Everything 9tut!!!! I have passed my exam 958/1000 EIGRP, ACL1 and ACL2. Questions from EIGRP, IPV6 and new questions!
watson , mathew , examtut dumps are valid ???????
I passed my exam today and i scored 1000/1000… Thanks for my dear Malil and 9tut ^^
I passed my exam 5 Jul 2014 and Score is 917/1000. Thanks for my dear Aleem ahsan and 9tut.
all those who pass exam please do favour for others… kindly tell others abut dumps from where they prepare for exam..thanks alot and congrats for everyone who clear the exam…
I passed today scoring 972/1000 for the first attempt, So grateful to God, Everything is the same, just study hard and dont be nervous.
Goodluck guys
thanks happpiness…
hello everyone…today at 10 july i passed my CCNA exma at last… i got 986 marks out of 1000…i prepared from watson, mathew and bilbeast…i prefered watson…its still valid 100%… and as far as about labs… they are same ACL1, ACL2 and EIGRP… and please one advice stay calm in exam no need to panic.. and when u do sims read it carefully… and i ACL modification ” permit ip any any” command should be applied…in the end thanks to Touseef Bhae, Zulqurnan my frend, 9tut and examcollection…
Hey passed my exam today with 917/1000 points :D
Thank you 9TUT! Best practice
Labs acl1, acl2, eigrp..watson and gillbeast dumps
I have passed the exam with 986 today. Labs Acl, Acl2(modification 3) and eigrp (As 12 and IPs different). All questions from 9tut just a few from dumps e.g OSPFV2 vs OSPFV3. Read all topics from 9tut start with notes for understanding. After that master all the questions and its a guaranteed pass. Dumps can help to check on new questions e.g the one above and a few others. With 9tut info dumps are just something to assure you, you are ready. All the best feel free to raise any queries. Also check my comment on modification 3 on ACL2 page.
Hello
Please I need CCNA dumps if any one have, Kindly send to nadersa47@gmail.com
Thanks & Regards
nadar check ur mail… i send u dump
Please send me the latest dumps my exam date is 24 July and also send me the
LInk of acl1 and acl 2 On my email Id ansi_pak@yahoo.com
Thanks in advance!
i also need the link for acl1 and 2 also EIDRP sim , please my exam is next week. kudzanail41@gmail.com
I got 1000/1000. 9tut is an awesome site. This Lab came in today’s exam but the IP adress and Routers were different.
Thank you 9tut…!!!!!!!
Salam every one.Thanks To Almighty ALLAH today I passed ccna exame and my score is 958.I suggest watson dumps and lab simulation on 9tut.My labs were acl1 same as 9tut,acl2 with mod 3 and eigrp same as 9tut.
can anyone send me a latest dumps?
thanks guys and congrats to all who passed the CCNA exam ^^
my email
kimjim_guillena@yahoo.com
Hi,please can anyone help me send the new Watson dumps to elshen.rehim@gmail.com
Thanks
Just wanted to give a shout out to 9tut for being a total bro. I passed today with a 931/1000!! Thanks!
Hello there, with regard to access-list sim2 where in there’s a difference in AS number between R1 and R3. Is this example working cause i tried it and i can’t seem to get it to work.. I deleted AS 22 and replaced it with AS 212 with network 192.168.0.0 on R3 and in R1 i only added network 192.168.0.0. No passive-interface but can’t form adjacency.
Sorry i was referring to EIGRP example… thanks
Hey which fill-in the blank questions you got? Please I’m presenting the exam soon!
can anyone explain to me the gateway for the isp how to do it or get it because i am confused and is it plus or it a must to be done
Passed the test today. Thanks 9tut!
This question appeared and I did the exact configuration. But somehow I could not see them connected through “show ip route”. Pings were also unsuccessful. :(
Nevertheless, enjoyed answering every question thanks to the resources in 9tut.
almost pass 821 to pass has to be 825 i recommend to read carefully everything and all configuration also study watson vce still up to date