Solved

can I supernet to save time

Posted on 2004-09-15
3
282 Views
Last Modified: 2010-04-10
First time poster.

Our private network currently uses 192.168.0.0/24 (subnet mask 255.255.255.0). We're out of IP addresses. I would simply like to supernet and change our network to 192.168.0.0/16 (subnet mask 255.255.0.0). I know I'll be treating a class C range as a class B, but will it work? Research I have done so far says it will and it will save a lot of time. We have a Cisco PIX firewall.

Thanks.
0
Comment
Question by:dbowman_nna
3 Comments
 
LVL 2

Expert Comment

by:jasperomalley
ID: 12070593
Yes.
0
 
LVL 15

Accepted Solution

by:
adamdrayer earned 50 total points
ID: 12070820
only a couple of things that may hinder you but probably won't are:

1. Present or future VPN connections with other 192.168.x.x addresses won't work
2. Your broadcast address for the network has changed from 192.168.0.255 to 192.168.255.255.  Not a big deal, but something to keep in mind in case it breaks anything.

Also make sure that whatever is performing your NAT is also reconfigured.  If it's a firewall, you may have to alter the rules
0
 
LVL 11

Expert Comment

by:PennGwyn
ID: 12070919
You might consider going to /20 (255.255.240.0) rather than all the way to /16.

Note that this is only legal because all of the 192.168.x.x subnets are reserved by RFC 1918.  If you were using 172.16.0.0/16, you could not make the analogous leap to 172.0.0.0/8....

0

Featured Post

Superior storage. Superior surveillance.

WD Purple drives are built for 24/7, always-on, high-definition security systems. With support for up to 8 hard drives and 32 cameras, WD Purple drives are optimized for surveillance.

Question has a verified solution.

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

If you're not part of the solution, you're part of the problem.   Tips on how to secure IoT devices, even the dumbest ones, so they can't be used as part of a DDoS botnet.  Use PRTG Network Monitor as one of the building blocks, to detect unusual…
I had an issue with InstallShield not being able to use Computer Browser service on Windows Server 2012. Here is the solution I found.
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…
Both in life and business – not all partnerships are created equal. Spend 30 short minutes with us to learn:   • Key questions to ask when considering a partnership to accelerate your business into the cloud • Pitfalls and mistakes other partners…

863 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

Need Help in Real-Time?

Connect with top rated Experts

25 Experts available now in Live!

Get 1:1 Help Now