Subnetting 1

[lbarron]

Hi,

We currently have a single subnet /24 and are fast running out of IP addresses. All machines have their IP's statically assigned at the moment which is also a real pain.

I want to change things to /16 to give us a few more IP's and if possible get everything using DHCP through our W2K3 server.

What would be the quickest and least painful approach to make this change? Would I be better putting Users on one subnet and printers and switches on another?

Any help would be good.

Thanks

Lee

 

[LawnBoy]

DHCP will make your life much easier, and will make the subnet change a piece of cake. I'd get everybody on DHCP first, then make the /16 change.

As far as using different subnets for different equipment, it depends on how much broadcast traffic your network generates.

--
The stagehand's axiom: "Never lift what you can drag, never drag what you can roll, never roll what you can leave.

 

[jpm121]

a few more" as in 65,281 more? Cause that's how many you have in a /16.

Any time I start getting close to filling a /24 I'm looking to break things apart with VLANs. That's just my opinion though.

 

[burtsbees]

Why not just another /24, and make 2 vlans? The server could have more than just one dhcp pool...

Burt

 

[lbarron]

Thanks for the posts.

I agree that going /16 isn't an ideal scenario but due to other projects on the go I need a quick fix to get me some more IP's. Setting up VLANs on our site would require a hell of a lot of planning so it will have to be done later.

Thanks

Lee

 

[angelduvon07]

one thing that you can try is expanding the subnet on the scop and I'm pretty sure DHCP does the routing for you as well.
example if you already have a /24 subnet and all your workstations to static IP you can extend the scop.
example
if you already have an scope of 192.168.0.0/24 = 254 IPs
Start IP 192.168.0.1 End IP 192.168.0.254 you can increase this to 192.168.0.1 - 192.168.2.254 =762 IPs using 3 subnets and DCHP does the routing as well.
Try it, it did work for me.

Angel