?
Solved

Adding IPs to a shrinking network (Supernetting?)

Posted on 2014-10-23
11
Medium Priority
?
291 Views
Last Modified: 2014-10-23
OK So I currently have a network running windows server 2003 with the following network config

Class C network
IP Range: 192.168.18.1 - 192.168.18.254
Subnet: 255.255.255.0

We have about 5-10 IPs free. I need to add more IP's to the network but not sure about how to go about it..

I looked at supernetting but am not sure how to set this up..  Is it possible to just change the current network config?

Any suggestions would be very much appreciated..  

Thank you!
0
Comment
Question by:Herb Vasquez
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 6
  • 5
11 Comments
 
LVL 6

Expert Comment

by:Wylie Bayes
ID: 40400307
What is your infrastructure like?  Switches? Layer 2 or Layer 3?
0
 
LVL 2

Author Comment

by:Herb Vasquez
ID: 40400329
I have a 2 domain controllers handling 2 different scopes (192.168.18.40 - 192.168.18.120) (192.168.18.121 - 192.168.18.200)
all other IP are static.. Layer 2 switches with a sonicwall.. there are no VLAN being used..
0
 
LVL 6

Accepted Solution

by:
Wylie Bayes earned 2000 total points
ID: 40400343
How many clients in total?  

What is the subnet mask on the domain controllers?  255.255.255.0 ?

Could change to 255.255.254.0, and double your IP's.  192.168.18.1-192.168.19.254.

Or to 255.255.252.0 and quadruple your IPs.

Obviously you will need to reconfigure / add additional scopes in DHCP once you decide / make this change.
0
Get proactive database performance tuning online

At Percona’s web store you can order full Percona Database Performance Audit in minutes. Find out the health of your database, and how to improve it. Pay online with a credit card. Improve your database performance now!

 
LVL 2

Author Comment

by:Herb Vasquez
ID: 40400387
we are almost full so about 220 clients in total, but we are adding about 25 new emlployees so we will def be out of IP with all the network printers and switches we will be adding
0
 
LVL 2

Author Comment

by:Herb Vasquez
ID: 40400392
yes the subet for the DC is 255.255.255.0...


If i change the subnet mask to 255.255.252.0 whats the scope of IP's will to assign the scopes?

ex: scope 1 - 192.168.16.1 - 192.168.16.255
scope 2 192.168.18.17.0 - 192.168.17.255
scope 3 192.168.18.0 - 192.168.18.255

does that look right?
0
 
LVL 6

Expert Comment

by:Wylie Bayes
ID: 40400400
scope 1 - 192.168.16.1 - 192.168.16.255
scope 2 - 192.168.17.0 - 192.168.17.255
scope 3 - 192.168.18.0 - 192.168.18.255
scope 4 - 192.168.19.0 - 192.168.18.255

For a total of 1022 Host addresses.
0
 
LVL 6

Expert Comment

by:Wylie Bayes
ID: 40400402
scope 1 - 192.168.16.1 - 192.168.16.254 (Adjusted 255 to 254)
scope 2 - 192.168.17.0 - 192.168.17.255
scope 3 - 192.168.18.0 - 192.168.18.255
scope 4 - 192.168.19.0 - 192.168.19.254 (Adjusted 255 to 254)
0
 
LVL 2

Author Comment

by:Herb Vasquez
ID: 40400410
now if the gateway (sonicwall) is on the 192.168.18.0 scope will the devices on the other scopes be able to communicate/use that gateway and servers that are not within their IP scope?
0
 
LVL 6

Expert Comment

by:Wylie Bayes
ID: 40400424
The sonic wall would also need to be configured for the new subnet mask.  Since you are going have to make those changes, it would be wise to probably re-ip the sonic wall to 192.168.16.1 .  Then all scopes would use 16.1 as their default gateway.

If you wish you leave it as 192.168.18.something  you would need to configure DHCP scopes (003 router option) to set the default gateway to the correct IP address.  18.something.
0
 
LVL 2

Author Comment

by:Herb Vasquez
ID: 40400429
ok thank you for all the help!!
0
 
LVL 6

Expert Comment

by:Wylie Bayes
ID: 40400439
Most welcome :)
0

Featured Post

Get your Disaster Recovery as a Service basics

Disaster Recovery as a Service is one go-to solution that revolutionizes DR planning. Implementing DRaaS could be an efficient process, easily accessible to non-DR experts. Learn about monitoring, testing, executing failovers and failbacks to ensure a "healthy" DR environment.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction This article explores the design of a cache system that can improve the performance of a web site or web application.  The assumption is that the web site has many more “read” operations than “write” operations (this is commonly the ca…
In the world of WAN, QoS is a pretty important topic for most, if not all, networks. Some WAN technologies have QoS mechanisms built in, but others, such as some L2 WAN's, don't have QoS control in the provider cloud.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Suggested Courses

741 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