3640 Router as dns server

[bradbuys31]

I have found a lot of documentation that would alow a router to be a dns server.   The command to turn on the server is "ip dns server"   This command does not exist in the IOS version I am running.  I am running the following c3640-i-mz.124-25b.bin

ip dns server

To enable the Domain Name System (DNS) server on a router, use the ip dns server command in global configuration mode. To disable the DNS server, use the no form of the command.

ip dns server

no ip dns server

Syntax Description

This command has no arguments or keywords.

Command Default

The DNS server is disabled.

Command Modes

Global configuration

Command History

Release	Modification
12.2(4)T

[sachinraja]

Hi Brad

I was going through feature navigator, and found that "dynamic dns support for Cisco IOS" is available only on IP PLUS and ENTERPRISE IOS images.. I see you are running c3640-i-mz.124-25b.bin  which is a IP BASE image...

c3640-js-mz.124-25b.bin

c3640-is-mz.124-25b.bin

are the IOS code levels you need to look for.. but this would incur a cost to upgrade IPBASE to IP PLUS, and i really dont think it is a useful investment to buy this image, for such a small functionality to work...

Hope this helps.. all the best

Raj