Problem with 1841

Answered Question
Jul 6th, 2010

I m having a problem with my cisco 1841.

From the router i can ping external ip(4.2.2.2 or 187.103.200.1). but a user from vlan 11 can ping router wan interface 187.103.200.2 and default gw 172.25.11.1, but can't ping external ip.

I have this problem too.
0 votes
Correct Answer by Chetan Kumar Ress about 6 years 5 months ago

Hi Vitor

Can you remove ip nat inside from Physical interface & configure the same one under all subinteface.

Can you post output of sh ver (IOS Ver.)

Regards

Chetan Kumar

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Reza Sharifi Tue, 07/06/2010 - 18:40

Hi Vitor,

Looking at your config,  is vlan 11 supposed be actually a /30 subnet or is it a typo?

interface FastEthernet0/1.11
description qi
encapsulation dot1Q 11
ip address 172.25.11.1 255.255.255.252

Reza

vitorssouza Tue, 07/06/2010 - 19:53

Reza,

it is right, because for this vlan there is only 1 valid ip, for the user.

wang baojun Tue, 07/06/2010 - 20:13

Vitor,

the config seem no problem ,you can try done the following operation.

interface FastEthernet0/1.11

description qi

encapsulation dot1Q 11

ip address 172.25.11.1 255.255.255.252

ip nat inside

Correct Answer
Chetan Kumar Ress Wed, 07/07/2010 - 12:07

Hi Vitor

Can you remove ip nat inside from Physical interface & configure the same one under all subinteface.

Can you post output of sh ver (IOS Ver.)

Regards

Chetan Kumar

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