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)
importance of eigrp
http://www.bubblews.com/news/7151154-eigrp-lab
passed with score of 1000.
labs: eigrp, acl, acl2- mod3 (host A)
go through 9tut and actual tests.
practicing from watson and doing labs on packet tracer will help a lot.
EIGRP with as 2.. what does the as 2 mean.. is it the router eigrp 22
This in exam today except it was R4 with different IP’s.
i passed my exam today, thanks 9TUT, all explanations are here, Acl,Acl 2 (host B), Eigrp (AS 221),, one Etherchannel Question, OSPF v3 Question, and the rest from dump ,,
Wish you luck Gyes,,
He guys,
please in exam it’s possible to ping ISP router ?
if the R1 does not have a default route toward the ISP router What do I do now ?
Please answer me, I planned my exam on 17th Sept
Thanks a lot.
I have the same question as ramos, do we have to configure the static route?
ip default-network 198.0.18.0
ip route 0.0.0.0 0.0.0.0 198.0.18.5
In the sim you provide on this page, the configuration of the static route is not present.
Thanks
pls send the latest ccna dumps … am going to write the exam by this month… hemnath25@yahoo.com
please help!!
1) I have heard that in real exam, access to the router CLI cannot be gained by clicking on it?
like we do in packet tracer (we enter all commands by clicking on the router & getting access to the CLI)
is this the same procedure in exam or different to enter commands?
2) when I enter ” copy running-config startup-config ” this command on packet tracer it asks this.
” Destination filename [startup-config]? ”
what should i enter after that?
just done the exam and passed 945. its easy 9tut is enough to make you pass.
labs eigrp, acl1 and acl2 mod3
I really wanted to know wheather TAB key will work in real exam or not?
Help please
please can i have the VCE exam complete player? mine is a trial version. I pass my exam next week.
luicelestin@yahoo.fr
@hamza
1) u can access the CLI by clicking appropriate host (which have console connection to the router)
ex:click the host G to access R1 CLI, and host F to access R3 CLI
2)it ask for the file name that u want to save the running conf, inside the bracket it display the default file name [startup-config], u no need to type any thing JUST PRESS ENTER.
im gonna take exam 18th sept. are there any new question please share experience?
@nux
Tell me, in the running-config file from R1, there is a default route or the ip default-network toward the ISP Router in real exam ?
Please answer me, I planning my exam tomorrow.
Thanks
Hello friends… Go to ccnalearn.cf to know all about ccna / dumps / exam problems / new questions.. etc all for free.
Hope it helps all to learn and clear ccna 200-120 exam. http://www.ccnalearn.cf
Rahul, do you know if TAB is allowed during exam or i need to type full commands?
didn’t pass, 780… found out about 9tut too late, already paid for exam. Does anyone know if the labs remain the same if I re-take next week? Thanks.
please tell me which sims are valid
when I am writing sgow running config command on packet tracer for this simulation it shows this doesn’t show AS number etc what to do? R1#show running-config
Building configuration…
Current configuration : 863 bytes
!
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R1
!
!
!
enable password cisco
!
!
!
!
ip cef
no ipv6 cef
!
!
Can we use ‘?’ (Help) during configuration in exam ?
Had exam today. Got ACL 1 & 2 and EIGRP. 1000/1000. This site is so cheating
yes question mark works perfectly. TAB does not thou
how to access R1 CLI with host G in the exam !
passed ccna with scoring 1000/1000 :)
I am so happy :)
EIGRP ACL2 DUMP CCNA
https://www.youtube.com/watch?v=mzHBPOAWaCY&index=1&list=PLW2Xk7jJ5ZSoFn2G_x0ql_S5AlKvaDaOZ
@annonemous yes the lab same.
I didnt pass the first time too.
After i found 9tut. I pass.
All the best
If anyone need help in CCNA 200-120. I am available humza024@gmail.com :)
i will go to do exam tomorrow any advice hamza ?
Thanks 9tut, just passed my exam an hour ago! study 9tut very well nd you’ll pass.
passed with 1000/1000, labs were Acl1, Acl2 mod 3, Eigrp AS 112. Also, there was one etherchannel question. need any help u can contact me : ayolatinwo@gmail. com
can any one tell me if the R1 does not have a default route toward the ISP router What do I do now ? we have to cofigure or not..? pls tell me i have exam tomorrow.
@ramos1987 @ben @Naidu yadla
Yes you have to cofigure it with
ip default-network 198.0.18.0
ip route 0.0.0.0 0.0.0.0 198.0.18.5
!
Dears ,
I think if we configure static route its adminstrative distance is 1 , but EIGRP is 90 . So , here will work just static route . could anyone explain this side of the issue ?
Thanks
thanks friends
Passed Today with 1000/1000
Whatson and Matthew dumps
EiGRP , ACL1,ACL2
hi @winSxS
kindly, could i ask you to send me this dumps on eng.abdoehab@gmail.com
i have planned my exam next week
can anyone send me the dumps for next week ?? I will take the exam on friday oct. 3 . Thank you so much . dreborn1919@gmail.com
Any tips regrding to clear CCNA
@9tut…Thanks so much from LA. Passed with a 917. Most of material on this website was in the exam. I would say 90%. My labs were ACL 1 & 2, and EIGRP. The EIGRP lab layout was a little different then the one here. The AS’s were still 212 and 22. In order to configure the router that needed the AS changed you had to log in from a host that was directly connected to that router. I was not able to telnet. Also i didn’t need to configure the gateway, static route, or passive interface.
I really wanted to know wheather TAB key will work in real exam or not?
Got through my CCNA today. Thank you 9tut! Got ACL2 and EIGRP with slightly different modifications. Mathew dump helped a lot. @pedro: Didn’t try the tab key, but short commands worked at the exam.
thanks alot for the information Harry…
I got 1000/1000 in ccna exam in 29/9/2014, all questions are from waston dump in http://www.examcollection.com
Three simulation questions eigrp,acl 1 and acl 2 withe changes in ip address
Good luck for all
Relax every thing is easy
Passed the exam today Sept. 29th with 986 – Thanks 9tut… Though I had 2 more sims (might be because my last failed attempt) – 1 more sim EIGRP , 1 more sim OSPF …. Please stop asking for dumps most of the questions are in here – Learn them but with understanding the matter and enjoy :)
@HN
Congratulations…
The additional sims you’ve got today are the same as those in 9tut ??
I have my exam tomorrow morning… any advice ??
Passed the exam with 972 a week ago. 9tut and watson dumps help a lot!
I had Eigrp ACL 1 and 2 from 9tut.
3 sims from 9tut EIGRP,ACL1 and 2 – only IP addresses and AS changed to 112.
@Hussein – the 2 additional sims are simple OSPF and EIGRP adjacency troubleshooting.
- All of the questions are listed here in 9tut!
Can you please explain what type of question is being asked for OSPF and EIGRP adjacency troubleshotting have been added.Can you give me detailed explanation.I have exam scheduled for tomorrow.
Please pleas
I have heard that new simulation of EIGRP and OSPF adjacency troubleshooting have been added recently.Can you tell where i can get that question.I have exam scheduled this week.