Change subnet mask for Domain Controller and Exchange 2000 server

Posted on 2006-05-16
Last Modified: 2011-10-03
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:

We would like to change our subnet to, 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

Question by:mikesjn
    LVL 28

    Accepted Solution

    > change our subnet to
    I hope you changed to otherwise you eliminated your entire subnet ...
    Windows 2000 supports supernetting so go ahead ...

    Author Comment

    Sorry typo, yes But can I change servers as detailed in my post, using as subnet. Desktops and linux boxes already running on it
    LVL 25

    Expert Comment

    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.
    LVL 28

    Expert Comment

    All systems on your subnet must use the same subnet mask ... so if your subnet mask is  your servers should use the same and not

    Author Comment

    yes sorry all along, must be having a bad day with so many typos.

    LVL 28

    Expert Comment

    No prob ... if its just a typo .. thanks for the points

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