DHCP: Running out of IP addresses in the scope

I have a windows 2000 domain with a DHCP server.
My current network is 10.151.x.x/255.255.0.0 with all servers on the 10.151.10.x/255.255.0.0 subnet & the DHCP clients in the subnet 10.151.50.x/255.255.0.0. My current DHCP server is configured with scope 10.151.50.x/255.255.0.0. Now I'm running out of IP addresses in the current subnet. I need another subnet 10.151.51.x/255.255.0.0 to be added. Is this possible? Can I add another DHCP server in the same network to serve this new scope? Or should I change to VLAN switches?
vvaidyAsked:
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saw830Commented:
Hi,

Technically speaking, 10.151.50.x with a mask of 255.255.0.0 is in the same network as 10.151.51.x with a mask of 255.255.0.0.  Indeed, all of 10.151.x.x with a mask of 255.255.0.0 is in the same network, that's what the 255.255.0.0 mask tells us.  If you are running low on dhcp space in the 10.151.50.1-254 range of 10.151.x.x, and there is rooms above, in the 10.151.51.1-254 for example, simply extend the dhcp range that you have.

If you prefer, you could add another range, but I believe that it would un-necessarly complicate things.

If you wanted to add another DHCP server to manage the additional space, that's fine.  It's not required, but it would be recommended.  This would allow a backup if your primary DHCP server developed a problem.  If you do this, however, you want to make sure that your addresses ranges don't overlap between the two servers.

Hope this helps,
Alan

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Nirmal SharmaSolution ArchitectCommented:
Could this be useful for you please:

http://support.microsoft.com/?kbid=255999
saw830Commented:
Hi,

Thanks for the accept.  Hope all is working well.  Let us know if it isn't.

Have a great day.
Alan
vvaidyAuthor Commented:
Thanks Alan for your answer. I was not sure whether I can extend my DHCP scope as such. Now I've extended the scope as 10.151.50.1-10.151.51.254/255.255.0.0 & excluded the IP addresses 10.151.50.255 & 10.151.51.0. Now things are fine.
Regards
Vaidy
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Windows 2000

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