DHCP server

I have WINNT 4.0 installed with DHCP server on it.
I´ve put the IP range : to  (class B) on the scope.

But it only assigns IPs from to It does not assign IPs from to

I´m using the mask;
Why does it happen ? Is it because 192.... is a Class C address ? I think it should not cause problems, because it´s an internal network.

Hope you help me !
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Tim HolmanConnect With a Mentor Commented:
Any update ?
since the *.2.* is a different subnet, you have to put it on a different scope. do you have any routers?
ptenutaAuthor Commented:
But even if I use a Class B netmask ?
Yes, I have a router.
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i am just thinking that it is a C class address, and it's not that the internet tells you this, it's a bit thing within the address. try the multiple scope approach.
You need to create a supperscope for you DHCP server.  Here is the article. Q161571


I’m too busy thinking of lunch; that should read ‘super scope’ (not supper).  It allows you to combine two logical subnets on one physical subnet.
Tim HolmanCommented:
Hmmm.. anyone hungry ?

Tim HolmanCommented:
If you want to serve a 500 PC network, why not create a 500+ PC subnet mask ?
ie - have a subnet mask of or something, giving you 14 subnets of 1024 machines ?

I have a fairly simple way to resolve your problem.

Use 10.x.x.x and subnet it down to the class b that you need. This gives you flexability if want to plan for growth.

Example: set the DHCP IP range to to use a subnet of this way you have plenty of room for your currnet nodes and plenty of room to grow. If you ever expand to beyond this range all you have to is extend your scope and not worry about re-subnetting your network.

stoneb's solution is the best.
problem is your ip address.
you can't use 192.* as B class.
The 192.169.x.x is an internal network. These numbers are not used on the Internet.

There is no reason why ptenuta can't change the network to a 10.x or any number for that matter.

The only reason the initial scope did not assign addresses to the 192.169.2.x
is because 192 is a class c IP address. Therefore limiting you to 254 addresses. Anything past the 254th address will not be assigned.

Ptenuta is not restricted by the actual number he/she picks only which class the number that he/she picks. That is why I suggested a Class A number, a Class B would work fine as well. I just always find it easiest to use 10.x.x.x
Folks, for starters, the class of an address is defined by the beggining bits of the address. Therefore, no matter what the mask, 192.169.x.x is always going to be a class C address. However, it is possible to create one big network by joining multiple class C addresses. It's called SuperNetting (from the opposite of SubNetting).

The net Mask you need to use for what you're trying to do is , which will give you a network with 510 useable addresses.

On a side note, the address 192.169 is not reserved for Private use. Only 192.168 is. If anyone's interested, I'll send the RFC number (gotta find it).


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