DHCP not working

briandunn3 · 2016-03-03T13:29:25.000Z

Hi guys,

I am trying to move my DHCP from a server 2003 to a new 2012r2 server I did a successful export and import to the new server. I authorized the new server and deauthorized the old one. I run into “An error occurred while renewing interface vEthernet (internalvm) : unable to contact your DHCP server. Request has timed out.” error when I try to renew an IP address on any workstation though. Any help would be useful

Thanks!

rockn · 2016-03-03T13:38:02.000Z

Has the scope been activated?

alexrobertson2 · 2016-03-03T13:40:10.000Z

Does the new server use the old server for DHCP under ipv4 network config? I have forgotten that before!

aldrin · 2016-03-03T13:40:35.000Z

Anything on event viewer?

Are your clients pointing to the new server when you type ipconfig /all?

briandunn3 · 2016-03-03T13:40:42.000Z

yes, the scope is active

briandunn3 · 2016-03-03T13:42:01.000Z

no, they are pointing to the old DHCP even though it is deauthorized

Gary-D-Williams · 2016-03-03T13:43:39.000Z

Have they renewed an ip?

Try an ipconfig /release then an ipconfig /renew

rockn · 2016-03-03T14:05:19.000Z

Have you removed the old server from the list of authorized servers? I don’t think it gets removed from the list just because you deauthorize.

briandunn3 · 2016-03-03T14:13:01.000Z

Looks like it was fine, I forgot to expire all the leases. So a renew didn’t work. Had to release and renew, thanks Gary D Williams!