CCNA - ICND question - help

[kade714]

** NOT SURE IF THIS IS ALLOWED, IF NOT, SORRY, PLEASE DELETE **

I need help on a question from the CCNA-ICND test.

I didn't pass for a second time, and got the exact same score of
837/1000. 849 is a pass.

I believe this problem is what I've been getting wrong:

2 things needed:
- correct addressing on RtrA
- correct LAN config on RtrB

Server & Host Y need to be able to communicate.

Connections:
Host consoled to RtrA

RtrA s0/0 connected to RtrB s0/0
RtrA fa0/0 connected to Sw1

Sw1 connected to Server 10.1.1.148/24

RtrB fa0/0 connected to Sw2

Sw2 connected to Host Y 192.168.3.28/24

Config's:

RtrA:
s0/0
192.168.2.5/30

fa0/0
10.1.1.147/24

rip 10.0.0.0
rip 192.168.2.0

RtrB:
192.168.2.6/30

fa0/0
192.168.3.27/24
shut

rip 192.168.2.0
rip 192.168.3.0

Of course I enable RtrB fa0/0, which is half of the answer.
I can't figure out any problems with the addressing on RtrA.

Can someone help me? I'd really appreciate it. Thanks

 

[NahRamp2]

I just failed mine today, so this is like the blind leading the blind... but hey... i'll try.

No shutdown on the serial interfaces on RtA also? They seem to be in the right subnet. Looks all good to me.

 

[NahRamp2]

Just thought of something. Which one is the DCE and which is the DTE... you'll have to specify the clock rate on the DCE before a serial connection can be made

 

[kade714]

DCE is already set on RtrA.
No int's are shut on RtrA.

Not sure, but I'm definitely stuck.

 

[CiscoGuy33]

kade714,

Unless you have something wrong in what you posted other then the "shutdown" command it all works - I configured 2 2610 routers as you showed and setup 2 PCs as Host Y and Server, the server was connected to a switch that was connected to RtrA and "Y" was connected to a switch connected to RtrB

Server---switch---RtrA---RtrB---switch---PCY

I was able to ping server from Y and Y from server!!

Here are the configs for A and B as well as the Show IP Route for each

RtrA# sh ru

Current configuration : 829 bytes
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname RtrA
!
enable secret 5 $1$tT0e$pGTpif6ZUhxrP9klTha/W0
enable password
!
ip subnet-zero
!
interface Ethernet0/0
ip address 10.1.1.147 255.255.255.0
!
interface Serial0/0
ip address 192.168.2.5 255.255.255.252
no fair-queue
clockrate 2000000
!
interface Serial0/1
no ip address
shutdown
!
router rip
network 10.0.0.0
network 192.168.2.0
!
ip classless
no ip http server
!
line con 0
transport input none
line aux 0
line vty 0 4
password cisco
login
!
no scheduler allocate
end

RtrA#

RtrA#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route

Gateway of last resort is not set

10.0.0.0/24 is subnetted, 1 subnets
C 10.1.1.0 is directly connected, Ethernet0/0
192.168.2.0/30 is subnetted, 1 subnets
C 192.168.2.4 is directly connected, Serial0/0
R 192.168.3.0/24 [120/1] via 192.168.2.6, 00:00:02, Serial0/0
RtrA#

RtrB# sh ru

Current configuration : 815 bytes
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname RtrB
!
enable secret 5 $1$Zo1p$TbQvlAk15DBSk20Aectb..
enable password
!
ip subnet-zero
!
interface Ethernet0/0
ip address 192.168.3.27 255.255.255.0
!
interface Serial0/0
ip address 192.168.2.6 255.255.255.252

!
interface Serial0/1
no ip address
shutdown
no fair-queue
!
router rip
network 192.168.2.0
network 192.168.3.0
!
ip classless
no ip http server
!
line con 0
transport input none
line aux 0
line vty 0 4
password cisco
login
!
no scheduler allocate
end

RtrB#

RtrB# sh ip rout
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route

Gateway of last resort is not set

R 10.0.0.0/8 [120/1] via 192.168.2.5, 00:00:10, Serial0/0
192.168.2.0/30 is subnetted, 1 subnets
C 192.168.2.4 is directly connected, Serial0/0
C 192.168.3.0/24 is directly connected, Ethernet0/0
RtrB#

It works on the "real" thing

Best way to test is with real routers, switches and PCs

Are you sure the subnet mask for Ethernet was /24?


E.A. Broda
CCNA, CCDA, CCAI, Network +

 

[comptek]

kade714,

I know how you feel. Going into that exam is very tough to say the least. I know I took the icnd 2x and now am concidering taking the single. But anyways I think we may have had the same sim here is a link to my post if you care to take a look.

http://www.tek-tips.com/viewthread.cfm?qid=1337021&page=1.

I looked at your setup like CiscoGuy did and created a small network also. It worked fine. I was able to ping all the way across. My only problem that I had was I configured the wrong default gateway on my pc so the pings would not work. Like CiscoGuy said about subnets I am not sure what the sim was looking for. I honestly think you had the same sim. If you want I am looking for a study buddy for the ccna. I am almost ready again to take it. I am willing to share what I know with your or anyone else for that matter.

Good luck

Comptek
A+, Network+

 

[NahRamp2]

I dont know how soon I'm going back for another dose of punishment from cisco. PLease pass anything you have my way, and remember the 801 is ending next month.... for us... its kinda now or (not never...but) wait a while. Think i'll go next week friday or even this week

 

[CiscoGuy33]

NahRamp2,

The CCNA 640-801 exam does NOT end next month, the 640-802 test starts August 1, 2007 so you will have the choice which CCNA exam you want to take.

From Cisco - 640-801 CCNA - Last day to test 11/6/07

http://www.cisco.com/web/learning/le3/le2/le0/le9/learning_certification_type_home.html

If you studied the "old" CCNA stuff you will have about 3 and 1/2 months to still take and pass that CCNA (801)exam!!!


E.A. Broda
CCNA, CCDA, CCAI, Network +

 

[NahRamp2]

Thank you JESUS! I can unclench my butt cheeks now

 

[burtsbees]

Kade---it does work in real life just like that, but I'm thinking Cisco wants to see RIP version 2, and the network statement in Router A as 10.1.1.0...I really don't know though. Since that address/subnet is the only one RIP is concerned about in the entire topology, then auto-summarization would not be an issue as far as it being able to be reached. I think Cisco always recommends that when using classless networks with a routing protocol, then use a classless routing protocol, such as a link state protocol or if distance vector protocol, then use EIGRP or RIP version 2.

Burt

 

[CiscoGuy33]

Burt,

I think you might be on the right track - that is what I was looking for when I loaded the config on my routers!

My config automaticly picked up the "ip classless" even with RIP v1 because to save time I used "setup" to do the basic config and then tweaked it!

I would not expect the sim to want to change the routing protocol on both routers but it might have wanted to add an "ip classless" to RtrA!


When I get to work Monday I might take the "ip classless" out and see if it can still find the different subnets on the 10.0.0.0 network.

If it is not that then I am thinking that one of the subnets should have been /28 or /29 and not /24.

Whatever it does make us all THINK!!




E.A. Broda
CCNA, CCDA, CCAI, Network +

 

[burtsbees]

Well, wouldn't you need another subnet for it to "screw up"? Since it's only one subnet in the 10.x.x.x network, whether it's /24, /28, /29 etc., it is still considered part of 10.whatever, right? If another 10.x subnet were added to the mix, though, then at the other end would it auto-summarize, and come up with some goofy supernet, making any higher subnet (I.E., /29) unreachable?
Since it's a class A, and RIP version 1, why would it make a difference whether it's /24, /28, etc?? No matter what, default mask for class A is /8, so /24 and /29 are treated equally, unless IP classless is implemented...right??? Kade probably found the answer and is laughing at us by now...

Burt

 

[CiscoGuy33]

Burt,
You are right! I was thinking the different subnets on the 192.x.x.x side but that is already Class C so it will see the different networks!

I tried the "No IP classless" just to see if it had any trouble and it still found the networks just fine as it should have as Burt expl above!

We must be missing something else or the IP addresses listed are not right :-(

I do hope that if Kade did find the answer or where the trouble was thast he would post it


E.A. Broda
CCNA, CCDA, CCAI, Network +

 

[burtsbees]

We must be missing something else or the IP addresses listed are not right sad
"
No---I really think they want to see RIP ver 2 and 10.1.1.0 as the network statement. I know in the cisco sims on the tests, one is graded on what commands are typed to se if things work, I.E. sh ip rou, sh run, etc.

Burt

 

[telteck]

had the same question. found out be sides enable the int.
have to copy run start to save config.

 

[burtsbees]

See Eugene? Figures we'd think too deeply about it, and miss an obvious simple answer like that!!! If I were Kade, I would definitely be laughing right now!

Burt

 

[CiscoGuy33]

Burt,

YES - I do over think MOST Cisco questions

I was thinking that but several years ago here I pointed out that on the sims you need to do a "copy run start" and then log off the router because the way I learned - you never leave a router logged into privledged mode

I got so much sh_t from some (that are not here any more)that I have not brought that up again!

I just figured I would just do it myself - and I have on every sim I have taken on a Cisco exam - have never failed on 4 Cisco exams

We asked one of the Cisco CCNA exam team at Networkers about the Sims and he said the best advice he could give us is to treat it like a real router and do exactly what you would do on it! He had been asked if you have to do a "copy run start" - he would not answer but said that



E.A. Broda
CCNA, CCDA, CCAI, Network +

 

[gb0mb]

Also remember that on the exams they add questions that will not be graded towards your final score. I think usually 5-10 questions are test questions for future use.

So don't get caught up if you see something that is totally new.

I also found that when I took the CCNA single exam there were a few questions that you actually have to just guess.

Gb0mb

........99.9% User Error........

 

[CiscoGuy33]

gb0mb,

You are so right but it is more like 2-5 questions that would be tested (and not graded)

There is no way you would know which they are so just do them all and answer the best you can!

I had one question that the only way I could answer was knowing what 3 out of the 4 answers were - so I knew they were not the right answer - process of elimination!

Just do not get hung up on any question - read it - read ALL the answers and pick the MOST correct answer! Then move to the next question - you can not mark them or come back to them!


E.A. Broda
CCNA, CCDA, CCAI, Network +

 

[Gharus]

Okay,

I just read something in this thread that makes me think I screwed up one of my sim questions. I had a totally unrelated sim question on ACLs but after configuring the Access List and applying it correctly, I never did a 'copy run start'. Would that be marked wrong because I didn't save the running-config file? I'd be awfully mad if I blew the test because of that! Please let me know. Thanks!