Removing subneting in W2000 domain

I have a network 172.20.0.0 /23 and I need to change it to 172.20.0.0/16.
Will be there any problem with DNS , DHCP or AD. What seguence of steep shall
I do?

"Hugo" <(E-Mail Removed)> wrote in message
news:A4904F44-E63D-4C1E-95BC-(E-Mail Removed)...
> I have a network 172.20.0.0 /23 and I need to change it to 172.20.0.0/16.
> Will be there any problem with DNS , DHCP or AD. What seguence of steep
shall
> I do?

Change the mask on everything and you are mostly done.

Re-create the DHCP Scope. You cannot alter the Mask in a Scope,..you just
have to delete and recreate the Scope.

Your network will become inefficient. Subnets should not contain more than
250-300 Hosts as a general rule. Ethernet operates via Broadcasts *by
nature*,...the more Hosts the more Broadcasts [aka Ethernet Overhead],...the
more Broadcasts the more bandwidth is eaten up and the slower it runs.

The "real" solution is to add another subnet to the LAN instead of making
the existing one bigger. Broadcasts do not normally cross subnets.

--

Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com