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)
mike, show running-config command will show the passive interface under router eigrp 212 information
thanks jeff, can i ask which info you get from FAQS
I believe 80-100 points for each lab but just in case try in check it out on cisco’s website.
I mistake click next to the question…. and I fail the course …. 711 marks….
If I never click next ….. I will have passed…
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
How you all managed to get so high score…… the multiple choice question so easy ?
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?
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
guys I have in 3 rd of March please if u have anything inform me too
Hi ,
In this Lab if we redistribute network 198.0.18.0 under EIGRP then only it is advertising without using IP default-network & Ip route. If we apply IP route without distributing EIGRP it wont work .Why??
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.
hi bar..how much marks u got ?
Today i have passed CCNA exam and i have got 1000/1000 marks.
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…..
@bar
How do you add 198.0.18.0 on the perimeter router?
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
Does anybody knw anything abt MIKROTIC , where I can download videos and material 4 mikrotic
Hi I passed CCNA today 1000/1000. Thax to 9tut, Examtut & Examcollection. Labs ACL1,2 &EIGRP. Contact me if you have any questions.
I’m a little bit confused… with a subnet mask of 255.255.255.252 wouldn’t the network address be 192.168.77.32? I’m a little confused as to why we are using 192.168.77.32 as the network address. Thanks
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 use the wildcard mask?
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
we have to do something else to submit it ?
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)#end
R3#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-summary
R3(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
my dear
Taking the test Monday. Are the labs still ACL1, ACL2, and EIGRP? Please respond
Hi. do the ‘?’ command works in ccna 200-120 ?? please am taking exam today
Yes, I could use the ? marks and the tab key in the exam
I’m re-taking Monday
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.
dear all
please answer folowing questions about passive interface.
*passive interface defination
*how we can recognize that any/ some interfaces are passive?
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
Is there a 9tut for CCNA Security?
My question is:
We configured:
Int fa0/1
ip address 192.168.60.65 255.255.255.240
int fa1/0
ip address 192.168.60.81 255.255.255.240
and we configure router eigrp network is 192.168.60.0 and 192.168.70.0
i am not geeting that our network is subnetted, and network id for fa0/1 is 192.168.64.0 and for fa1/0 is 192.168.80.0, why we configure 60.0 and 70.0 in eigrp?
how are we saving the config on ccna exam please help me thanks you
Help me,
We saved configuration by typing command is “copy running-config startup-config” in privileged mode like this:
Router#copy running-config startup-config & (press Enter)
Hello,
I am having 1 question in this Eigrp sim:
In this question it has mentioned that “after adding R3 router, no routing updates are being exchanged between R3 and the new location”
Can you please tell me, which is the new location in the diagram?
Please reply,
Thanks in Advance Guys..!!!
brahmanand,
Thanks lot soo i have another question is this site like good.
Thank you
the problem in R3 is new with A.S 212 instead 22. and about R1 it doesn’t add network 192.168.77.0 id network between R1&R3 if you did is became access R3 TO internet
Hi All,
I got a discount voucher from Cisco and they said I should score 75% of my exam to qualify. Does anyone know what type and how questions they ask in this exam.
“Score at least 75 percent on your first attempt of the final exam in a qualifying course (CCNA Discovery 2 or 4, CCNA Exploration 4, or CCNA Security, CCNA Routing and Switching Essentials, or Connecting Networks)” this right here is their instructions.
Please advise me, as i desparately need he 58% discount.
Many thanks in advance.
Is Q6 in drag and drop 1, being a sim supposed be in the CCNA 200-201 exam? Its so long- I can’t imagine it being part of this exam. Infact its more complex than AL1, AL2 and EIGRP
pls guy im writing on nxt weeck and im focassing only on 9tut it is the secure web to prepare for the exam? pls tell me ppl
@rhonal
questions and sims here in 9tut will be enough. just finished my exam today and got a perfect score :)
Passed today 1000/1000, Labs still EIGRP, ACL 1 and ACL2
passed today … the labs were : ACL ( host C needs to access finance web server ) and this EIGRP one.
By the grace of Godm 1 passed my CCNA exam! ACL 1 & 2 and EIGRP showed up. 90% of questions are here on 9tut.
Thank you 9tut!!
For this lab what are the questions? Is “The task is to identify the fault(s) and correct the router configuration to provide full connectivity between the routers” the only question for this lab.
In the modifications part “A static route from R1 to ISP & “ip default-network” command in R1 are the correct answers” are answers for which questions?
Can anyone clarify please I am really confused about this?
Guys,
I was having a problem with de default gateway, Routers, except for R1, didn’t know the default GW.
Typed the command “redistribute static” and it workes. Default gateway got into the other routers.
Hope this helps.
Sorry the typos :)
Alhumdulillah I have passed CCNA 200-120 Score 917.
1. ACL 1 is same.
2. ACL 2 same but Ip Range diffrent and target Web Browser access Host B.
3. EIGRP same but Ip Range diffrent diffrent EIGRP 23.
Thanks 9tut……,
ip default-network 198.0.18.0
ip route 0.0.0.0 0.0.0.0 198.0.18.5
needs to be done only on R1 or all the routers. Can somebody please answer I have exam in few days. Thank you.
more simple method is ip route 0.0.0.0 0.0.0.0 s1/0 / and also use command redistribute static
Can any one email me the latest video training of labs i need it on urgent bases at haroon.talha@gmail.com