EIGRP Troubleshooting Sim
Question
Refer to the topology. Your company has connected the routers R1, R2 and R3 with serial links. R2 and R3 are connected to the switches SW1 and SW2, respectively. SW1 and SW2 are also connected to the routers R4 and R5.
The EIGRP routing protocol is configured. You are required to troubleshoot and resolve the EIGRP issues between the various routers. Use the appropriate show commands to troubleshoot the issues.
Instead of posting the output of “show run” commands we post here the commands entered on each router to reduce some useless lines. Also you can try solving questions by yourself before reading the answers.
| R1: int lo0 ip address 10.1.1.1 255.255.255.255 int e0/0 ip address 192.168.16.1 255.255.255.0 int s1/1 ip address 192.168.13.1 255.255.255.0 bandwidth 1000 int s1/3 ip address 192.168.12.1 255.255.255.0 ! router eigrp 1 network 192.168.12.0 network 192.168.13.0 network 192.168.16.0 |
R2: int lo0 ip address 10.2.2.2 255.255.255.255 int e0/0 ip address 192.168.123.2 255.255.255.0 int s2/1 ip address 192.168.12.2 255.255.255.0 ! router eigrp 1 network 10.2.2.2 0.0.0.0 network 192.168.12.0 network 192.168.123.0 |
R3: int lo0 ip address 10.3.3.3 255.255.255.255 int e0/0 ip address 192.168.123.3 255.255.255.0 int s2/1 ip address 192.168.13.3 255.255.255.0 ! router eigrp 1 network 10.3.3.3 0.0.0.0 network 192.168.13.0 network 192.168.123.0 |
| R4: int lo0 ip address 10.4.4.4 255.255.255.255 int lo1 ip address 10.4.4.5 255.255.255.255 int lo2 ip address 10.4.4.6 255.255.255.255 int e0/0 ip address 192.168.123.4 255.255.255.0 ! router eigrp 2 network 10.4.4.4 0.0.0.0 network 10.4.4.5 0.0.0.0 network 10.4.4.6 0.0.0.0 network 192.168.123.0 |
R5: int lo0 ip address 10.5.5.5 255.255.255.255 int lo1 ip address 10.5.5.55 255.255.255.255 int e0/0 ip address 192.168.123.5 255.255.255.0 ! router eigrp 1 network 10.5.5.5 0.0.0.0 network 10.5.5.55 0.0.0.0 network 10.10.10.0 0.0.0.255 network 192.168.123.0 |
R6: int lo0 ip address 10.6.6.6 255.255.255.255 int e0/0 ip address 192.168.16.6 255.255.255.0 ! router eigrp 1 network 10.6.6.6 0.0.0.0 |
Note: In the exam, this sim uses IOS version 15 so “no auto-summary” is the default setting of EIGRP. You don’t have to type it.
You can download the pkt file to practice here: http://www.9tut.com/download/9tut.com_CCNA_EIGRP_Troubleshooting_Sim.pkt
Question 1
The loopback interfaces on R4 with the IP addresses of 10.4.4.4/32, 10.4.4.5/32 and 10.4.4.6/32 are not appearing in the routing table of R5. Why are the interfaces missing?
A. The interfaces are shutdown, so they are not being advertised.
B. R4 has been incorrectly configured to be in another AS, so it does not peer with R5.
C. Automatic summarization is enabled, so only the 10.0.0.0 network is displayed.
D. The loopback addresses haven’t been advertised, and the network command is missing on R4.
Answer: B
Explanation
On R4 we see EIGRP is configured with AS 2 (router eigrp 2) while other routers are using AS 1 (router eigrp 1). Therefore R4 cannot see other routers and vice versa.
Question 2
Which path does traffic take from R1 to R5?
A. The traffic goes through R2.
B. The traffic goes through R3.
C. The traffic is equally load-balanced over R2 and R3.
D. The traffic is unequally load-balanced over R2 and R3.
Answer: A
Explanation
For this question we have to check the routing table of R1 to find out the answer. Use the “show ip route” command on R1 we will get something like this:
There are three interfaces on R5 which are Loopback0: 10.5.5.5 ; Loopback1: 10.5.5.55; Ethernet0/0: 192.168.123.5 and all of them are advertised via 192.168.12.2 so we can conclude traffic from R1 to R5 goes through R2 (192.168.12.2 is the IP address of S2/1 interface of R2).
Note: Maybe there is another version of this question in the exam in which the answer should be “The traffic is equally load-balanced over R2 and R3″. Therefore please check the “show ip route” output carefully to see if there are more than one route to the destination.
Question 3
Router R6 does not form an EIGRP neighbor relationship correctly with router R1. What is the cause for this misconfiguration?
A. The K values mismatch.
B. The AS does not match.
C. The network command is missing.
D. The passive-interface command is enabled.
Answer: C
Explanation
From the configuration of R6 we learn that R6 is missing “network 192.168.16.0″ command (the network between R1 & R6) under EIGRP so EIGRP neighbor relationship will not be formed between them.
Question 4
Study the following output taken on R1:
| R1#ping 10.5.5.55 source 10.1.1.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.5.5.55, timeout is 2 seconds: Packet sent with a source address of 10.1.1.1 . . . . . Success rate is 0 percent (0/5) |
Why are the pings failing?
A. The network statement is missing on R5.
B. The loopback interface is shut down on R5.
C. The network statement is missing on R1.
D. The IP address that is configured on the Lo1 interface on R5 is incorrect.
Answer: C
Explanation
R1 does not advertise its loopback 0 (10.1.1.1) to EIGRP therefore a ping to destination 10.5.5.55 (R5) from 10.1.1.1 will not be successful because R5 does not know how to reply to R1.
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Hi! I just wanna share this. I took ccna exam and I passed with 972/1000 last nov 8. Acl2 + eigrp + 9tutdumps + 2new ospf ques (which i havent read here) Then I have 2 friends who also took the exam last nov12 one passed and one failed. Both of them told me that they had different troubleshooting than mine. The one who passed said that most of the ques are still here/same but the one failed said that more than half were new ques. So im just saying that its really hard to rely, i suggest to study it too. My friend who failed was confident to pass it coz she knows 9tut I mean we both study the same thing and the they both take it the same day but well sudden turn of events. It was sad and i dont want that to happen to others. Anwaaay, Good luck to every one wholl take ccna exam! Have a great day!
I have read all of the comments all the way from the beginning up to here November 15th, 2014 but no has ever answered this question:
In the exam simulation proper, do you have to MODIFY or CHANGE the configuration of the devices involved or answering the questions would be enough.
Please advise. Any helpful information is greatly appreciated. Thanks.
I have read all of the comments all the way from the beginning up to here November 15th, 2014 but no one seems to have ever answered this question:
In the exam simulation proper, do we have to MODIFY or CHANGE the configuration of the devices involved or answering the questions by means of ticking on the check boxes and radio buttons would be enough.
Please advise. Any helpful information is greatly appreciated.
Thanks.
@Kia you have been so helpful to others, thank you.
@Razerment: In the CCNA exam you have to configure devices, change some config to make your network operates smoothly.
Dear all
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Did anyone pass with in these two days?
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Just took my CCNA 200-120 exam today got 1000/1000 (100%) using 9tut as study guide and tutorials. VCE dump by Watson is great for practice. Tutorials and Sims are a must from 9tut for passing (had ACL1, 2 & EIGRP sims).
Thanks 9tut.
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could please anyone of you explain how works the example on question 4 ????
I mean I do not understand how works comando “SOURCE”
R1#ping 10.5.5.55 source 10.1.1.1
please help thanks!
@Jose Hernandez Eso significa que el ping se hace desde la dirección 10.1.1.1 (origen) hacia la dirección 10.5.5.55 (destino)
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Hi All Dont panic of dumps..Just now passed and got it 945 .ACL ,ACL2 with Modi 3 ,and EIGRP 112..All questions came from watson sump..that is all rumers nothing chaanged
in exam labs are already configured and we have to give only answer or we will configure ourself ?
please guid eme
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in exam labs are already configured or not ?we have to give only answers or we will configure ourself ?
please guid eme
In R5 should I remove the “network 10.10.10.0 0.0.0.255″..Could anyone help out..Thanks
Maqsood ..ACL2 Lab and EIGRP we need to configure .ACL Simlet only we can give the answer .Best of luck …Btw watson link is http://www.examcollection.com/cisco/Cisco.Actualtests.200-120.v2013-12-09.by.Watson.314q.vce-1.file.html
Moahmed ,, thank alot dear for your cooperation
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Whats the purpose of ‘network 10.10.10.0 0.0.0.255′ in R5..Should it be removed in the exam..can anyone help on this?
Thanks
Thanks 9tut ^_^ i took exam today and i got 958/1000 … simulation question same as here (EIGRP, ACL )
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hello,i am goning to take a exam of CCNA ,thanks so much for giving the troubleshooting examples to study!
just passed today (986/1000).
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Hi..Which is the eigrp lab which is coming in the exam? The one in this page or the other EIGRP lab sim in 9tut..Thanks
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