DHCP PTR Record

[hs08]

If we use Cisco Router as DHCP server, can we make this DHCP server to update the record on DNS Server for all clients?

The DNS server using Windows Server.

[Enes Simnica]

gDay to u @hs08, and no, a Cisco router acting as a DHCP server cannot update records on a Windows DNS server. Windows clients can register their own records in DNS after receiving an IP, but if u want DHCP to handle DNS updates, u should use Windows DHCP (with the router as a DHCP relay).

hope it helps and PEACE!

-Enes

[MHM Cisco World]

You need DDNS 

Dhcp can not do that 

Check this guide 

https://www.cisco.com/c/en/us/td/docs/ios/12_2sb/12_2sba/feature/guide/sba_ddns.html

Note:- no body is use DDNS and like it' just to make you notice that

MHM

[Jens Albrecht · Accepted solution]

Hello @hs08,

Cisco routers acting as DHCP server cannot natively perform dynamic DNS udpates for the clients.

The reason is the fact that only authorizied DHCP servers are allowed to do this. Therefore, Microsoft DHCP servers are tightly integrated with AD and authorizing them in your AD is part of the setup. This authoriziation allows them to update the DNS entries for the clients but it is not possible to do the same with Cisco routers.

Therefore, it is best practice to use Microsoft DHCP servers in your AD to provide IP addresses to your clients. There are also some third-party solutions with DDNS support but using MS DHCP servers is the recommended way. The Cisco devices are then 'only' used as a DHCP relay agent.

HTH!