My first google tonight led me to an article on the excellent ios hints and tricks site (ioshints.info). Though this is for a full public DNS server it was a little overkill for me, please read this article as well if you do plan to go that route.

My goal was to have my DSL router serve local IP’s for a few public and local domain names. For example this allows me to use sip.djerk.nl as my proxy address in my soft-phone both at home and away.

The following code is what I ended up with.

# These hostnames will be served locally
# As such they overrule their public dns
# clients do need to use this router as a dns server
ip host view VoIP sip.djerk.nl 192.168.100.130
ip host sip.djerk.nl 192.168.100.130
ip host c877 192.168.100.1

interface Vlan10
description *** VoIP LAN ***
ip dns view-group VoIP

# For my Voice vlan
ip dns view VoIP
domain name djerk.nl
# search list for this view
domain list djerk.nl
domain name-server x.x.x.x
domain name-server y.y.y.y
domain round-robin

# Default dns handling
ip dns view default
domain name geurtscass.com
domain list geurtscass.com

ip dns view-list VoIP
view VoIP 1
view default 100

# Enable local dns server (proxy dns if no domains are configured here)
# I do not allow inbound dns requests (intf ACL) so no need to worry about abuse
ip dns server

Most interesting is the usage of views and a view-list. According to CCO the view-list is needed to bind a view to an interface, views can’t be assigned directly. Also noteworthy is that I’ve not found a way to reduce the sip.djerk.nl host mapping to a single line, as adding the default view to the VoIP view-list was not enough. Maybe I should add the VoIP view to the default view-list.

Well just tried that and it didn’t work either. Anyone out there who knows how to do the same in IOS but with less lines?