Expand Network 10.10.x.x.

Posted on 2013-10-09
Medium Priority
Last Modified: 2013-10-10
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: --

clients: thru  subnet mask:

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

most of our servers are in the 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
Question by:simonajbart

Expert Comment

ID: 39560587
How is the physical network configured?  Is the Windows server acting as a router, or do you have seperate device for that?

Author Comment

ID: 39560612
Physical server acts as DHCP and Domain Controller

Gateway is a separate device -- Sidewinder 410F --
LVL 25

Accepted Solution

Mohammed Khawaja earned 1000 total points
ID: 39561195
Change the default subnet mask for all devices with static IP from to 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.
LVL 17

Assisted Solution

vivigatt earned 1000 total points
ID: 39562243
I agree with mnkhawaja.
You must increase the number of hosts in your subnet, so reduce the subnet bits mask.
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

Author Comment

ID: 39562481
Awesome guys - thanks for the heads up... here is the resolution.

Increased subnet on firewall burb from to -->

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

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.

Featured Post

Managed Security Services Webinar - March 15

Selecting the right managed security services platform to grow your business can be a huge undertaking. Join WatchGuard and Frost & Sullivan in an upcoming webinar as we dive into the key elements of selecting a vendor platform and partnership to fuel a successful MSSP business.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Are you one of those front-line IT Service Desk staff fielding calls, replying to emails, all-the-while working to resolve end-user technological nightmares? I am! That's why I have put together this brief overview of tools and techniques I use in o…
Measuring Server's processing rate with a simple powershell command. The differences in processing rate also was recorded in different use-cases, when a server in free and busy states.
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…
NetCrunch network monitor is a highly extensive platform for network monitoring and alert generation. In this video you'll see a live demo of NetCrunch with most notable features explained in a walk-through manner. You'll also get to know the philos…

600 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question