Expand Network 10.10.x.x.

Have a corp network we are looking to expand - here are the details; bit of an amateur with notation so please be kind.

gateway and firewall: 10.10.1.1 --

clients: 10.10.1.2 thru 10.10.1.255  subnet mask: 255.255.255.0

DHCP provided to clients from W2003 Server - 10.10.1.120 thru 200 -- (WE ARE MAXED OUT)

most of our servers are in the 10.10.1.2 thru 30 range... workstations are scattered throuhout the network using static IPs.

If we wanted another another 256 addresses, how do all the pro's recommend we accomplish this.

Message me for more details if needed ... Thanks
simonajbartAsked:
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alicainCommented:
How is the physical network configured?  Is the Windows server acting as a router, or do you have seperate device for that?
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simonajbartAuthor Commented:
Physical server 10.10.1.11 acts as DHCP and Domain Controller

Gateway is a separate device -- Sidewinder 410F 10.10.1.1 --
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Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
Change the default subnet mask for all devices with static IP from 255.255.255.0 to 255.255.252.0 and then change the DHCP scope to reflect the new subnet mask.  Ensure to include your default gateway also to the list of devices with static IP addresses that needs to be changed.
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vivigattCommented:
I agree with mnkhawaja.
You must increase the number of hosts in your subnet, so reduce the subnet bits mask.
Use
http://www.subnet-calculator.com/
to check the new details for your subnet.
Remember that you will have a class B or class A network if your subnet mask is less than 24bits (less than 255.255.255.0)
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simonajbartAuthor Commented:
Awesome guys - thanks for the heads up... here is the resolution.

Increased subnet on firewall burb from 255.255.255.0 to --> 255.255.252.0

Increased subnet on DC and DHCP controller from 255.255.255.0 to --> 255.255.252.0

Started adding pc's into the 10.10.2.x network and all is good. browsing and internet access, and also can browse domain on the machines -- excellent.
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