Should I subnet my network?
Should I subnet my network?
Need some advice with my Lan with regards to a possible change because we are running out of Private IP's.
Let me start by explaining what we have.
15 HP Proliant Servers (all with dual nics setup as Teaming)
1 x HP 2824gb Switch (used for all servers only, port trunked to below switch)
3 x HP Procurve 4208vl Giga Switch's (total off around 300gb ports split between all switches, loads spare)
No VLANS are setup.
Port trunking is used between switches
RSTP is enabled on all Switches
Each of the switches has been setup with port trunking to each switch ( 2 network cables to each switch, Ring Method)
Sonicwall Pro 2040 Firewall – 192.168.111.1
We have exactly 170 Desktop Computers.
30 Network Printers and other devices.
We have two Windows 2003 Domain Controllers each with split DHCP Scope, range is from 192.168.111.50 to 250
Anything below 192.168.111.49 is Server or Printer
Our network IP Structure is as follows
Range 192.168.111.1 to 254
The network is a 2003 Domain, we have no need at all to split any departments up, and every user has many mappings to a mixture of servers.
I need to ensure that we don't run out of IP Addresses, we are ok for now but need to get this sorted before it's too late.
So I've done some very basic research and from I've read I can do something call Subnetting. PLEASE CORRECT ME IF I AM WRONG. My current MASK is 255.255.255.0 and my IP Range is 192.168.111.x, if I was to simply change my entire network mask to 255.255.0.0 I could then change the DHCP scope to use 192.168.222.1 to 192.168.222.254, leaving the Servers and Devices on 192.168.111.x network.
The above will let me have 254 addresses on 192.168.222.x for Desktops and 192.168.111.x for Servers, printers and devices, both ranges will talk and network will run fine.
254 addresses is more that perfect for our next 5 years so we won't need to go above this.
Is the above correct?
As we have two internal DNS servers on the 2003 Servers each pc has a IP address allocated already with a dns name, this will change if I was to so a new scope, should I be doing something to the old DNS list ?
Am I doing this correct, or are there any better options?
Are there any problems that I could cause doing the above ?
Other than the above, what else could I do ?
From my understanding my Network switches are pretty good units, they can handle VLANS etc, but I'm negative towards VLAN's as I see no need for such a small company to confuse the network by introducing VLANS, our network is based on every seeing every one including servers. As I said above were not intrested in setting up departments. To give you a idea 5 of our servers are Data Servers and they have data split all over them for all the users, secured by NTFS.
Last thing I must say is I don't not want to introduce any possible problems as my network currently runs great without any issues. If you feel the above could cause major issues please say so.
Looking forward to help, please feel free to comment good or bad on my thoughts or network.