I don't think you can do that on a router. I think the usual way to do it is to forward all your DNS requests to your local DNS server, and then configure the local DNS server to refer to the ISP DNS server for addresses that are outside its scope.
You can do it, the Split DNS doc on Cisco website isn't the most straightfoward I've ever seen. It also doesn't give you a working example. I managed to succeed with this, and have added an example config assuming you still need to get this working. This was done on an 877W, with a split tunnel to PIX 515E. Now passes DNS query to internal DNS servers via the Tunnel, and all other DNS queries to the ISP Public DNS servers. Access list 101 is part of the inbound ACL assigned to the Dialer0 interface.
interface BVI1 ip dns view-group mycomp_viewlist
ip dns view mycomp domain name-server 192.168.1.x domain name-server 192.168.1.x dns forwarder 192.168.1.x dns forwarder 192.168.1.x dns forwarding source-interface BVI1 ip dns view default domain name-server 212.x.x.x domain name-server 212.x.x.x dns forwarder 212.x.x.x dns forwarder 212.x.x.x dns forwarding source-interface BVI1 ip dns view-list default ip dns view-list mycomp_viewlist view mycomp 5 restrict name-group 10 view default 10 ip dns name-list 10 permit .*.mycomp.CO.UK ip dns server
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...