04-10-2007 06:22 AM - edited 03-05-2019 03:23 PM
Hi,
I was wondering if Cisco IOS can act as a DNS Server. Can IOS provide basic DNS services or provide DNS forwarding?
I know IOS can provide DHCP services. Can IOS provide basic DNS services as well?
Any help or insight would be appreciated.
Thank you.
04-10-2007 06:59 AM
No, I don't think IOS can act as either a DNS server or forwarder.
04-10-2007 07:33 AM
Note that IOS can act as DNS proxy and cache. We use this on our MPLS WAN to limit DNS lookup required to traverse the cloud. Very easy to setup:
ip name-server
ip dns server
Simple as that...clients may now use the IOS router as a DNS server.
-Mike
04-10-2007 07:38 AM
Thanks, Mike!
May I ask what version of IOS and what feature set supports the DNS feature? Is it also known as DistributedDirector?
Thanks,
Herman Choi
04-10-2007 08:27 AM
According to the Cisco Feature Navigator (http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp) :
DNS Proxy: Act as a DNS server for LAN connected devices, to always have a DNS server address to give to DHCP client regardless if the WAN/VPN DNS server has been learned over IPCP or DHCP already.
It is only currently available on Cisco routers (not Catalyst switches) and only in Limited and Early Deployment IOS trains - not General Deployment.
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