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CCNA EIGRP LAB Question
July 1st, 2011 Go to comments
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
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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 whileothers 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
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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 R3router
R1>enable (you have to enter cisco as its password here)
R1#configure terminal
R1(config)#router eigrp 212
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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 otherrouters!
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 R3, 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 then we just leave it. Don’t use the “nopassive-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 the correct answers.
(Note: The “ip default-network” command in R1 will advertise the static route of R1 (to go to the Internet) toother 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 so
just leave it.
Other lab-sims on this site:
CCNA Access List Sim
CCNA NAT SIM Question 1
CCNA NAT SIM Question 2
CCNA Frame Relay Sim
CCNA Configuration SIM Question (RIPv2 SIM)
CCNA VTP SIM
CCNA Drag and Drop SIM
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CCNA Implementation SIM
Comments
Comment pages
« Previous 1 … 63 64 65 29
1. Jeff
February 18th, 2014
nevermind… i found what i was look for under FAQS
2. sharif
February 18th, 2014
jeff , i listened that each lab contain 100 marks
3. sharifFebruary 18th, 2014
mike, show running-config command will show the passive interface under router eigrp 212 information
4. sharif
February 18th, 2014
thanks jeff, can i ask which info you get from FAQS
5. Knicks46
February 19th, 2014
I believe 80-100 points for each lab but just in case try in check it out on cisco’s website.
6. trichard
February 19th, 2014
I mistake click next to the question…. and I fail the course …. 711 marks….
If I never click next ….. I will have passed…
7. Kadafi
February 19th, 2014
Passed my CCNA 200-120 on the 13th of february 2014, i got 931, labs were acl1 and acl2, and eigrp.anyone that knowz other sites similar to 9tut for CCNP? plzzz help
8. trichardFebruary 19th, 2014
How you all managed to get so high score…… the multiple choice question so easy ?
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9. ozz
February 20th, 2014
On this lab it says network 192.168.77.0, but according to the mask 255.255.255.252, it shouldnt be
network 192.168.77.32?
10. maveFebruary 21st, 2014
hi guys tell me if this site isthe best for ccna exam coz im just busy readind what this site got.can any1
confirm pls
11. Shujauddin
February 23rd, 2014
guys I have in 3 rd of March please if u have anything inform me too
12. Rakesh
February 23rd, 2014
Hi ,
In this Lab if we redistribute network 198.0.18.0 under EIGRP then only it is advertising without using IPdefault-network & Ip route. If we apply IP route without distributing EIGRP it wont work .Why??
13. Bar
February 24th, 2014
my question exactly. you don’t need the default route and default network. if you add the 198.0.18.0 to
router eigrp in perimeter router – you get full connectivity to the isp and other routers.
14. Gagandeep Singh
February 25th, 2014
hi bar..how much marks u got ?
15. Usman
February 25th, 2014
Today i have passed CCNA exam and i have got 1000/1000 marks.
16. HAMMAD HASSAN
February 25th, 2014
Today i passed my exam and i have got 917/100 score. The exam was too easy labs were ACL1, ACL2,
and EIGRP with some modification Yahooooooooooo:)
Thanks! 9tut…..
17. Anonymous
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February 25th, 2014
@bar
How do you add 198.0.18.0 on the perimeter router?
18. Anonymous
February 25th, 2014
Do you add it like this?
(Perimeter Router) enable
configure terminal
router eigrp 212
network 198.0.18.0
end
copy running-config startup-config
19. ebemusty
February 25th, 2014
Does anybody knw anything abt MIKROTIC , where I can download videos and material 4 mikrotic
20. Rakesh
February 27th, 2014
Hi I passed CCNA today 1000/1000. Thax to 9tut, Examtut & Examcollection. Labs ACL1,2 &EIGRP.
Contact me if you have any questions.
21. City
February 28th, 2014
I’m a little bit confused… with a subnet mask of 255.255.255.252 wouldn’t the network address be192.168.77.32? I’m a little confused as to why we are using 192.168.77.32 as the network address.
Thanks
22. City
February 28th, 2014
just to add to my previous comment… is it the no auto-summary command that allows us to use
192.168.77.32? If we were going to use the subnetwork address from what I understand we would usethe wildcard mask?
23. Atif
March 4th, 2014
my last question , configuring lab is by just to clicking the host attached to it ,
after configuration the lab will just submit with copy run start ?or
3/13/2014 CCNA Training » CCNA EIGRP LAB Question
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we have to do something else to submit it ?
24. Amartya Roy
March 5th, 2014
Dear All,
Over here while re-configuring the R3 router the steps followed are -
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)#endR3#copy running-config startup-config
But for the sake of security and things like “Query Mishap” which can tear apart the network if configured
poorly, I belief the approach below is more meaningful.
However I am worried whether it will cost my marks in the exam??
Please share your valuable comments in this regard -
R3#configure terminal
R3(config)#no router eigrp 22
R3(config)#router eigrp 212
R3(config-router)#network 192.168.77.34 0.0.0.0 (enables only on Fa0/0)
R3(config-router)#network 192.168.60.65 0.0.0.0 (enables only on Fa0/1)
R3(config-router)#network 192.168.60.65 0.0.0.0 (enables only on Fa1/0)
R3(config-router)#no auto-summaryR3(config-router)#end
R3#copy running-config startup-config
———————————————————
R1(config)#router eigrp 212
R1 (config-router)#network 192.168.77.33 0.0.0.0 (enables only on Fa0/0)
R3#copy running-config startup-config
25. AnonymousMarch 5th, 2014
my dear
26. Lafayette
March 6th, 2014
Taking the test Monday. Are the labs still ACL1, ACL2, and EIGRP? Please respond
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27. Tmac
March 7th, 2014
Hi. do the ‘?’ command works in ccna 200-120 ?? please am taking exam today
28. Lafayette
March 7th, 2014
Yes, I could use the ? marks and the tab key in the exam
I’m re-taking Monday
29. Amartya Roy
March 8th, 2014
Please someone tell me whether it will cost my marks if I activate EIGRP on particular interfaces rather
than going with the complete subnet block ???
Have my exam this Monday.
30. Al
March 10th, 2014
dear all
please answer folowing questions about passive interface.
*passive interface defination
*how we can recognize that any/ some interfaces are passive?
31. Eranga
March 10th, 2014
I finished CCNA successfully today. acl,acl2 and eigrp from 9tut are valid. Also see the dump“Cisco.Actualtests.200-120.v2014-02-12.by.GillBeast.299q.vce” and “Cisco.Certkey.200-120.v2014-
02-19.by.Lusi.272q.vce”.
That is enought for CCNA 200-120 exam.Trust me
32. Lafayette
March 12th, 2014
Is there a 9tut for CCNA Security?
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