CCNA - ICND question - help

CCNA - ICND question - help
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Subject Author Date
CCNA - ICND question - help HEY! 07-15-2007
Posted by HEY! on July 15, 2007, 6:07 pm
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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


Posted by Klutz on July 16, 2007, 1:40 pm
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RtrA:
s0/0
192.168.10.5/24
fa0/0
10.1.1.147/24

rip 10.0.0.0
rip 192.168.2.0

RtrB:
192.168.10.6/24

fa0/0
192.168.3.27/24
shut

rip 192.168.2.0
rip 192.168.3.0


>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
>

Posted by HEY! on July 16, 2007, 4:28 pm
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Thanks Klutz, but would you mind explaining why you'd change the
serial int's from:
192.168.2.5/30
192.168.2.6/30
to
192.168.10.5/24
192.168.10.6/24 ... ?

I understand RIPv1 is classful, but isn't subnetting to /30 allowed ?
This isn't VLSM, correct?


Posted by Klutz on July 16, 2007, 10:03 pm
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I know it isn't VLSM, but RIP version1 don't announce the subnet mask.
So,on RTA,192.168.2.5/30 and 192.168.2.0/24 are in the same network
.Router's interface should connect different network. You announce the
network 192.168.2.0 on fa0/0 of RTA,how it determine the packet's export?
s0/0 or fa0/0?


> Thanks Klutz, but would you mind explaining why you'd change the
> serial int's from:
> 192.168.2.5/30
> 192.168.2.6/30
> to
> 192.168.10.5/24
> 192.168.10.6/24 ... ?
>
> I understand RIPv1 is classful, but isn't subnetting to /30 allowed ?
> This isn't VLSM, correct?
>

Posted by pk on July 17, 2007, 3:34 am
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Klutz wrote:

> I know it isn't VLSM, but RIP version1 don't announce the subnet mask.
> So,on RTA,192.168.2.5/30 and 192.168.2.0/24 are in the same network

Where are you seeing that?
The original config is this (rewritten in IOS format):

RtrA

int s0/0
ip address 192.168.2.5 255.255.255.252

int fa0/0
ip address 10.1.1.147 255.255.255.0

router rip
network 10.0.0.0
network 192.168.2.0


RtrB

int s0/0
ip address 192.168.2.6 255.255.255.252

int fa0/0
ip address 192.168.3.27 255.255.255.0
shutdown

router rip
network 192.168.2.0
network 192.168.3.0


Server (10.1.1.148/24) connected to RtrA's LAN
Host Y (192.168.3.28/24) connected to RtrB's LAN


So, other than doing "no shutdown" on RtrB's fa0/0 and adding "version 2" to
both rip configs, I don't see what else can be wrong here.


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