• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 246
  • Last Modified:

Change subnet mask for Domain Controller and Exchange 2000 server

All,
Servers: Both Domain Controllers, Our DHCP and DNS are running on Linux Servers.

1       Windows2000 server sp4, running AD,Exchange 2000
2      Windows2000 Server SP4, running AD,Bkupexec,WSUS, Mcafee Protection pilot


Ip address range: 192.168.1.0 255.255.255.0

We would like to change our subnet to 255.255.255.254, this will give us more addresses. We have several new servers joining this network and with wireless networks, failover, etc we may start to run out of addresses. We will only be a few addresses into the range, but it will solve potential problems.
Most of our linux machines and all our windows desktops now use the 254 subnet mask, DHCP is configured for that and DNS has the reverse arpa 192.168.0 DNS lookup for the new network has been created. Can I just change the subnet mask on the 2 Domain controllers, bearing in mind that one of them is running Exchange 2000 server?

Many Thanks

Mike
0
mikesjn
Asked:
mikesjn
  • 3
  • 2
1 Solution
 
Michael PfisterCommented:
> change our subnet to 255.255.255.254
I hope you changed to 255.255.254.0 otherwise you eliminated your entire subnet ...
Windows 2000 supports supernetting so go ahead ...
0
 
mikesjnAuthor Commented:
Sorry typo, yes 255.255.252.0. But can I change servers as detailed in my post, using 255.255.254.0 as subnet. Desktops and linux boxes already running on it
0
 
mikeleebrlaCommented:
yes you can do this without any issue at all.... not a big deal.
but remember if you have subnets setup in AD sites and services, you will need to edit the subnet in AD so that AD will run properly.
0
New feature and membership benefit!

New feature! Upgrade and increase expert visibility of your issues with Priority Questions.

 
Michael PfisterCommented:
All systems on your subnet must use the same subnet mask ... so if your subnet mask is 255.255.252.0  your servers should use the same and not 255.255.254.0.
0
 
mikesjnAuthor Commented:
yes sorry 255.255.254.0 all along, must be having a bad day with so many typos.

Thanks
M
0
 
Michael PfisterCommented:
No prob ... if its just a typo .. thanks for the points
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

  • 3
  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now