Re: Dynamic DNS on Cisco 877

djuma-daniel · ‎06-06-2006

Hi all,

I have an Cisco 877 ADSL router configured to negotiate ip adress on dialer 0.

A dhcp pool has been configured for LAN users with a static dns-server which is also the address of default-router. I have also configured "ppp ipcp dns request" on dialer 0.

Normally, the router should import DNS from my ISP and then forward them to LAN users...but it doesn't happen. To acess internet, I have to statically configure the DNS address of my ISP.

Could youd help me to solve this issue ?

Many thankx.

Djuma

tekha · ‎06-06-2006

The command you are looking for is "import all".

ip dhcp pool A

import all

djuma-daniel · ‎06-08-2006

Hi Tekha,

Thankx for your answer.

I have tried this command but no success.

See my config in attach.

Regards.

tekha · ‎06-08-2006

Could you post the output of this command "sh ip dhcp import"?

djuma-daniel · ‎06-08-2006

Hi,

I could only see the dhcp pool that I created but no any dns server imported.

Regards.

tekha · ‎06-09-2006

Well then either you have come across a bug, or more likely "import all" isn't supported when running "ip address negotiated", but only when running "ip address dhcp" on an interface.