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)
@ Arif
yes, i did the no auto-summary,i did every thing as stated here at 9tut but still cant,get adjacency,i was thinking it has something to do static route,cus there was no passive interface on the router which i should have worried about
Ping is not working to begin with, whats the problem? I did everything it says here to do. What’s this thing about passive interface? What command do I remove that with and where? Thanks. Is the passive interface going to be on the exam as well?
Hi guys, would like to ask about an update regarding the exam.. what are the latest set of laboratory simulations on the actual ccna exam? is it still EIGRP, VTP and ACL2? will be havin my exam by monday 22nd of oct..
thanks and best regards.. :)
@Rose
I will let you know tomorrow between 4pm and 6pm after I am done taking my test. How is that for an update?
@ every one i pass the exam,thatnks to God ,9tut,exam collection for the dumps ,.the questions are the sam no changes at all just the ip address that change.Acl,Eigrp and Vtp ,study the consept en you will pass the exam,wish everyone good look this week,
@Oct28 all the best on yr exam 2morow
Oct18 pls which of the dumps did you use and what was your score.
@Oct18
Congratulations @Oct18.
Did you see any question like ”Implement, verify and troubleshoot NAT and Acls in a medium -size Enterprise branch office network”?
I am worried about that because I am taking exam on this week.
What was your ACL required?
for the ACL2 THIS WAS MY Q
Host C should be able to use a web browser(HTTP)to access the Finance Web Server
- Other types of access from host C to the Finance Web Server should be blocked
– All access from hosts in the Core or local LAN to the Finance Web Server should be blocked
- All hosts in the Core and local LAN should be able to access the Public Web Server
Only the ip address changes
my answer was
access-list 100 permit tcp host 192.168.175.3 host 172.22.81.17 eq 80
access-list 100 deny ip any host 172.22.81.17
access-list 100 permit ip any any
int fa0/1
ip access-list 100 out
end
copy running-config startup-config and i got 100% on the sim
remember-
the Implement, verify and troubleshoot NAT and Acls in a medium -size Enterprise branch office network is the ACL,NAT question in general BUT cisco is only using ACL2 FOR NOW WHICH IS THE ON ABOVE,so no need to worry,but my advice is you just have to know them all in case cisco changes their questions,
my eigrp was the same as here only the ip address that changes
my vtp was QUESTION,1,5,6,7 AND (8) but the 8 question was change to ip address which i would like guys to comment about the question says—
Out of which ports will a frame be forwarded that has source ip-address 192.168.34.2 and destination ip-address 192.0.23.1? (Choose three) i just guess on this one.
finaly my score was 967,my dumps were brar,sekhar,cbt neget,examcollection and above all 9tut thank u all
@Oct18
Very very thanks.
thanks @18 oct
Passed ccna today with 973/1000.sims same like 9tut only the ip has changed and autonomous numb.vtp 5 questions.acl permit host b ,deny others hosts to access finance serv. Ip has changed too.i used sekhar and brar for the new questions from 380 to 631q there are a lot of new questions there that are not in sekhar but i got only 2 or 3 new questions the rest are from sekhar 697q.
Thanks mike,18oct,arif,9tut,sekhar and examcollect
Failed my test today with 762… because of stupid SIMS, ashame i didnt discover this website before. Where do you guys get the practise multiple choice from? want to re-take in couple of weeks whilst fresh in my mind…
@Oct18
Regarding the VTP question 8. I had the same question on my test (which I passed). The answer would be found in “sh ip arp”.
@ sasha ,
well even i got 762 , was well prepared to pass ,bit upset for today.
Any wasy need to study more.
Lot many questions from WAN.
What would be your mail ID ,i intend to give the exam in next 1 month.
@Ceaser,
Even i had a bad luck today ,what would be your mail ID .
mine is mrparab@rediffmail.com
Planning to attempt when i am fully confident but before End of 2012.
Thanks.
Passed the Exam today.. 933/1000
Sekhar dumps still valid..
just encountered 3 new questions (cant remember) but all the others are still on the dumps..
laboratories are still the same, VTP, ACL2 and EIGRP.. the details like IPs and AS are the only things that are changed..
on VTP, got questions 1,2,4,6 and 8..
on EIGRP, AS is 112..
on ACL2, got the one below..
—————————————————————————————————————
- Host C should be able to use a web browser(HTTP)to access the Finance Web Server
- Other types of access from host C to the Finance Web Server should be blocked
– All access from hosts in the Core or local LAN to the Finance Web Server should be blocked
- All hosts in the Core and local LAN should be able to access the Public Web Server *
I ans:
- access-list 100 permit tcp host (IP of Host C) host(IP of Finance web server) eq 80
- access-list 100 deny ip any host (IP of Finance web server)
- access-list 100 permit ip any any
- interface fa0/1
- ip access-group 100 out
- copy running-config startup-config
—————————————————————————————————————
1st of all, thanks to our creator, God..
to Rivan IT, MNET IT and 9tut!!..
I am using pass4sure dump.. Somebody let me know where to downloaad latest dump pls?
First Thanks to Almighty ALLAH.
I passed CCNA exam today with 947/1000.
I used Brar and Sekhar dumps and 9tut.
Total 50 questions.
98% question came from Brar dump. 90% matches with Sekhar dump. 1 New question.
**** EXAM IS REALLY SO EASY ****
Thanks to ALL.
@kuroido.. I am doing my exams on 24th. On the EIGRP did u mean the ‘EIGRP212′
@allan.. kuroido meant that the AS # for the EIGRP Lab he encountered was 112.
Is there much difference between the Brar and Bruce dumps?…I am doing my exam tommorow
I’ve been studying for the CCNA for a while now but I get cold feet whenever I want to take the exam. I’ve gone through the dumps and stuff. What do you advice I do? thank you.
I did my paper today and passed with 920/1000 thanks to 9tut and Bruce dumps…
@Debbie I too didnt think I’d make it but when i sat for the paper I realised it was quite easy, so my advice to you…GO FOR IT
hello ,,guys,,, i had the same Q in my exam ,,, i passed ccna exam ,,just 2 days ago,,i got 933 ,,thxxxxxxxx 9tut,,,,and if any one needs help ,, that’s my E-mail .. bb5nn6@hotmail.com
Hey guys, heralding from Australia here. I passed the CCNA exam today (870). Had EIGRP, ACL and VTP sims, but the EIGRP one here was NOT the sim I had.
I had Maint, Eng and other routers. Really the concept was the same, misconfigured AS’ and routes were wrong. Just jumped in and added in the appropriate routes and associations came back online.
good day to all :)
where do i can get one of those dumps?
dumps by Brar and Sekhar? please help me or send some to my email super need nikkodumapit@gmail.com
thank you very much
I been having exterem dificultis opening the .VCE extention, I have downloaded the recommended tool but it ask me to buy it.
For love of Cisco can somebody give me a solution, of a step by step guide if I’m doing anything wrong.
Thanks all – best of luck
I been having extreme difficult opening the .VCE extension, I have downloaded the recommended tool but it ask me to buy it?!!$$
For love of Cisco can somebody give me a solution, or a step by step guide if I’m doing anything wrong.
Thanks all – best of luck
@bosatsu
there is a solution on this forum:
http://www.certprepare.com/forum/index.php?showtopic=1664
Hi Guys,
Recently I wrote CCNA exam.I got EIGRP,ACCESS LIST 2 AND VTP sim Labs. Some of the questions didnt come from the dumps.
i just passed my ccna today… with 920/1000
sims were acl 2, eigrp and vtp.. all r same as here
and my dumbs were jericho …strongly helped me
just last 2 weeks only i studied 9tut and sekher dumbs.
exam was soooooo easy actually i did it in a 40 mins
in the mcq section i faced nearly 15 switching que.. 5 routing.. 5 ip addressing.. 2 wireless.. 3 wan… 4 drag and drops and some others i cnt remember
in examcollection.com webpage has more valid dumbs go with these notes and study hard you will get sure pass and everyone who want to do ccna in future- all the very best it is the best and nice career certification
oh wait… ccnp? yeah i m coming
I took the exam today. This was a simulation question. The other 2: ACL2 and VTP Sim. I passed with 960. Thanks for the labs, they helped a lot.
I am taking my exam tomorrow, for my second attempt. If any one else here has ever taken the exam a second time, do they change the sims from what you saw on your first attempt?
first install software & then doble click on registry entry.
You can find the software in below torrentz link.
http://thepiratebay.se/torrent/4930766
Hi dkx230 , I’m also planning to take the exam for the second time, I got a bad score today at 735 :’( I got confused on the LAB part where they added a new router that was not on my sim and that I haven’t practiced.
Not sure if they will change it the second time … Any comments guys? We’ll really appreciate ur feedback since its going to be our second try… Thanks in advance! :)
Please help me….
here is only single lab question….
this only question will come in exam or may be different? if different then where are the other questions?
u can download .vce file in torrentz it is free i am using it
hi everyone!
Which statement is correct regarding the operation of DHCP?
a. If an address conflict is detected, the address is removed from the pool and an administrator must resolve the conflict.
b. If an address conflict is detected, the address is removed from the pool for an amount of time configurable by the administrator.
Which one is true??? At 9tut the answer is a , at Brar the answer is b. I am not sure what is right!!!
more practice
Shouldnt the ip route be: ip route 0.0.0.0 0.0.0.0 198.0.18.6 or 0.0.0.0 0.0.0.0 s0/1 ? because there is no ip address of 198.0.18.5? on R1
please anyone help me
why ping from R3 to 198.0.18.5 fail???
@ Anon
what problem are you trying to solve?
zim zim zim zim
what do you mean
{eigrp with an extra unneccessary network to be removed}
what do we do?
@Sam
You tuping “no network x.x.x.x” under EIGRP
Hi, I failed my exam today with 785 points, the questions and sims were nearly the same, VTP question 5 was different, and in EIGRP scenario I probablly messed something up, because the scenario said I should be able to ping ISP router’s interface fine from all sites, however I wasn’t able to ping 198.0.18.5 (ISP serial interface to R1) from directly connected router1, ping across all other routers worked fine, 198.0.18.5, I had a static router in place, default network and the network under router EIGRP, spent around 15min looking for solution, but unable to come up with anything, anybody has any thoughts on this?
@roman
Well if there isnt a 198.0.18.5 ip address then your not going to be able to ping it in the example the s1/0 is 198.0.18.6. so i would assume that you would have your gateway of last resort set to that address along with your static route because that would be the next hop?
@Roman, are u sure you were asking to ping that ip?, im taking the exam in two days, im pracitcing with the 9tut simulator on packet tracer. In the simulator i can reach 198.0.18.6 from R2,R3 and R4, but there is not answer to the ping, cause isp router doesnt know the way back. Also, can you confirm me if the heldp “?” is available? Thanks very much in advance.
Sorry, i mean 198.0.18.
6, jeje.
Sorry again, 198.0.18.5, hope u understand.
I have a small confusion..
R1 to ISP its pinging as default route for 198.0.18.5 is there at R1.. I can ping all other routers together R1, R2, R3, R4.. but unable to ping ISP from R2, R3 and R4 routers.. what could be the issue? or it will not ping..
I can ping 198.0.18.6 from other routers i.e R1 serial interface but not 198.0.18.5.. Kindly help ASAP.. hAVE EXAM TOMORROW