Increasing IP range on existing network


I have a network which was setup as a standard /24 range. This was fine and should have been plenty of addresses for the network.
However the company expanded unexpectedly and they installed a new production line. The range would have been fine for the expansion of PCs however the people that put the production line in stuck all the components on the network and took up 105 IP addresses. Another company then came along and put a camera and door security system in and took a load more IPs.

So now I'm looking at a network with only about 10 ip address left and they are planning on buying iPads for the sales team.

What I'm trying to establish is if I can expand the IP range without additional hardware? And if so how do I go about extending the number of IP addresses I have?

The main network of PCs need to be able to see the production line devices for monitoring and reporting.

Here's where it might get tricky. Getting the 3rd party company to change the static IP settings on their components may not be easy. As a last resort we may be able to get them over to do it, but they are in Germany and we are in the UK. So it might be expensive to do.
Changing printers and the security system shouldn't be a problem.

I've attached a diagram of our current network layout.

Any help or advice would be greatly appreciated.

Many thanks.

Warren LloydMDAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Manfred BertlManagerCommented:
You can add another virtual interface (for example to your router (if it supports it) and/or also to your DHCP server (for example for serving addresses in the new subnet. Should work w/o any problem; every system could reach every other on the same or the other subnet.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
What mbertl has suggested would work, however, the two subnets talking to each other would have to traverse the router which means that your router interface will be very busy and your maximum throughput would be limited to the speed of the router.

The best suggestion is to do the following:

1.  Create a new VLAN for your production if your production devices do not need to talk to the business network (mbertl's suggestion).  This is the preferred way to ensure your production network is isolated and whatever devices need to communicate with business network should traverse a firewall
2.  Same as point 1 for cameras.  Also note that as you isolate different kinds of traffic, you are making your network much more stable
3.  Change the current subnet mask from /24 to /21 or /22 to get more IP ranges

Most of the devices I believe are Windows based and can be changed easily and ditto for cameras and other network devices.
Warren LloydMDAuthor Commented:

Thanks for your comments. I'm going to get some fibre to cat6 converters and connect the production line up to a separate port on the router. I can then create a vlan with inter-lan enabled so the main network can see the production line machines.

Many thanks for your help.

It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows Networking

From novice to tech pro — start learning today.