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ADSL Setup

sr2470182
Level 1
Level 1

Hi All,

I have just configure an ADSL interface on a router to dynamically connect to BT network for internet connection.

Below is my running config:

!

interface ATM0/1/0

no ip address

no atm ilmi-keepalive

dsl operating-mode auto

pvc 0/38

dialer pool-member 1

protocol ppp dialer

!

!

!

interface Dialer1

description ADSL Interface

ip address DHCP

ip nat outside

ip virtual-reassembly

encapsulation ppp

dialer pool 1

ppp chap hostname xxxxxxxxxxxxxxx

ppp chap password xxxxxxxxxxx

ppp pap sent-username xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Question:

1. Please How do I configure my Dialer1 interface to automatically request a DNS from the BT network?

2. Which do I need to configure on my Dialer1 interface, is it "ip address DHCP" or "ip address negociated"

3. Do I need to configure an "ip nat pool"?

Cheers!

20 Replies 20

Hello Law,

I think there is a little config mismatch in NAT

ip nat inside source list 100 interface Dialer1 overload

access-list 100 permit ip 192.168.0.0 0.0.0.255 any

but f0/0 uses

192.168.2.0/24

so nat is never triggered

you can check nat with

sh ip nat translations

sorry I didn't see before

Hope to help

Giuseppe

Thanks Giuseppe,

when I type in "sh ip nat translations", nothing is shown or displayed.

Though the router is not connected to the internet right now. I mean no adsl cable is connected to the interface.

What do you suggest the correct NAT statement should be If you feel there is a mismatch in the config?

Thanks

Hi Law,

Guiseppe, there is an access-list misconfiguration for NAT, the correct access-list would be

access-list 100 permit ip 192.168.0.0 0.0.255.255 any

This will permit all address from major networks to be NAtted to the public address.

192.168.1.0/24

192.168.2.0/24

192.168.3.0/24

192.168.4.0/24

192.168.5.0/24

Remember I gave you that access-list (currently in your config) previously as an example.

Also make sure you set your DNS server on the PC and give it a go.

HTH

Lejoe

Thank you all. I very much appreciate all your help.

I have now changed the list to

access-list 100 permit ip 192.168.0.0 0.0.255.255 any

I will give it a go and inform you what happen.

Regards to you all,

No worries, It's been long as length of this thread would indicate that you've been running behind the problem. Hopefully this should resolve things :)

Please get back if you run into any problems.

Lejoe

I am now Up and Running!!!

Thank you all for your support.

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