Scopes and Superscopes?

[The_KiD]

Let me start by re-itterating the fact I am not a networking guru.

My question is this:

I already have 1 DHCP scope 10.0.10.50 - 10.0.10.250

This is however rapidly running out of available IP's

If I create another scope 10.0.20.50 - 10.0.20.250

Then make a superscope to hold both of the original scopes will the DHCP server dish out IP's from each scope to all clients on the network and will the clients all be able to talk to each other without any issue or am I gonna drop a real clanger?

 

[TheKnat]

Depends on what your subnet mask is. If your using 255.255.255.0 then you are relying on your switches to route traffic properly between 10.0.10.x and 10.0.20.x. So unless your switches are setup to do this (which they might not be as standard) you would need to change the subnet mask to 255.255.0.0 for all the ranges to see each other.

 

[The_KiD]

ah ****

 

[swinnie]

Couldn't you just widen the original scope?

10.0.10.0 - 10.0.10.250 instead?

I am know network guru either!

 

[TheKnat]

ah ****

**** indeed. Either way to solve this problem is gonna take a little time. Putting in (or seting up) switches to route properly will take more money to do, whereas resetting the subnet mask will just take more of your time.

At our old site we had a flat 'non-routed' network which started on 192.168.1.0 and ended on 192.168.6.0 with a 255.255.0.0 mask and it worked fine for us. Its only when we moved to a managed network did we go for the routed option because its meant to be quicker and we were also implementing IP phones.

 

[The_KiD]

0 - 50 are excluded from the range for server static addresses and switches.

I remember now that the subnet is the issue as it is set to 255.255.255.0

Why do they make it so you cant edit the subnet

 

[TheKnat]

Yeah its a complete pain but your gonna either have to renew all your IPs now on a new subnet or do it when you run out.

Best to just get it over and done with and change the DHCP scope and get new leases to your clients