Posted: Fri Sep 16, 2011 10:15 pm Post subject: More IP's need on internal network
I am a subnetmasking dumby.
My current internal network is 10.0.1.x with a subnet mask of 255.255.255.0.
I am running out of IP's on this network. I have sonicwall firewall that i think i can uses as a router but am not 100 percent sure. I could setup multiple networks to reduce the traffic and seperate servers from users. Or I could put a router in between the firewall and the users and servers.
What is the general rule of thumb when you run out of IP's on simple network?
No routing required, just make your subnet bigger.
Change your subnet mask to 255.255.0.0 so you get 65,534 hosts instead of 254 - each unique combination of the last two octets (8-bit binary 'groups' / decimal digits in an IP address) will then be a unique host on your 10.0.x.x network.
Obviously do this with lots of caution and sense checking first, make sure your existing routers are reconfigured to handle this before changing any DHCP scopes etc.
10.0.1.x (aka 10.0.1.0/24) is just one sub-network of 10.0.x.x (aka 10.0.0.0/16), so all you are doing really is moving the boundary outwards to a bigger range while leaving the existing IPs in place. You can then change your DHCP and static addresses to suit you.
You may want to use some addresses for specific purposes to make life easier while everything is still in a single subnet eg:
10.0.1.x = servers and network devices
10.0.2.x = printers and other static IPs
10.0.10.x - 10.0.20.x = DHCP clients
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
Looking for more Windows Networking info?
Sign up to the WindowsNetworking.com Monthly Newsletter, written by Enterprise Security MVP Deb Shinder, containing news, the hottest tips, Networking links of the month and much more. Subscribe today and don't miss a thing! View a sample newsletter.
Become a WindowsNetworking.com member!
Discuss your Windows Networking issues with thousands of other Windows Newtorking experts. Click here to join!