out of ip addresses and i need to create a new scope

[rob davis]

my ip scope consists of the following
network address 172.19.104.0
subnetted 255.255.252.0

which gives me 3 scopes to use (i thought)

office 1 172.19.105.1 thru 254 at one office (in use)
office 2 172.19.106 1 thru 254 at another office (in use)
office 3 172.19.107.1 thru 254 not in use

i ran out of addresses at the office 1, so i attempted to
to create a 172.19.107.x scope their but i get the
following message when i try it.. "The address range and
mask conflict with an existing scope" how can i fix this?

 

[NuT CrAcKeR]

It sounds like you want to be using that in a superscope capacity.

If you have 1 scope with all those addresses, you wont be able to distribute
them to other offices. Each one needs to have thier own space, and then you
will route betweeen them. You need an IPHelper or BootP forwarder address on
your router.

Build the scope for each office so that it has enough IP's for all the
clients it needs to serve, with some padding for expansion.

The thing with the superscope, is you can set options that all 3 of your
office scopes will use at one location:

domain name
name servers
wins servers
wins node type, etc

each scope will need to have its own gateway (router) option set. You
"could" even give each network a different DNS name based on where it so, so
your hosts are more descriptive, and you could even have duplicate machine
names, in case that is something that cannot be avoided.

When using dynamic registration into DNS (you dont want to do that with
wins, as it doesnt care about domains), be sure that there is a zone for
each name, and that AD has a subnet setup for each on as well.

Sounds like you are going to have some fun over there...

NuTs

 

[Steve Duff [MVP]]

You really just have one available scope -- because of your subnet mask.

You should be able to simply open up the ending IP address on the
existing scope to lease in to the .107.x range.

Steve Duff, MCSE
Ergodic Systems, Inc.

 

[Phill]

172.19.104.0 255.255.252.0

If this is what you have in the DHCP server then you have one scope. Hence
the conflict message when you tried to add 172.19.107.1 -254.

The scope consists of 4 x 254 (plus 6 others addresses) not 3 x 254 as you
have. You can use 172.19.104.1 - 254. Not sure how you are controlling to
office level with one scope.

What is the IP address of the DHCP server? and it's subnet mask?

 

[rob davis]

dhcp server is 172.19.105.3

-----Original Message-----
172.19.104.0 255.255.252.0

If this is what you have in the DHCP server then you have one scope. Hence
the conflict message when you tried to add 172.19.107.1 - 254.

The scope consists of 4 x 254 (plus 6 others addresses) not 3 x 254 as you
have. You can use 172.19.104.1 - 254. Not sure how you are controlling to
office level with one scope.

What is the IP address of the DHCP server? and it's subnet mask?






.

 

[rob davis]

Ok to solve issue, i deleted the existing scope and
recreated it with a 255.255.255.0 subnet then exlcuded
172.19.106.x and 172.19.104.x subnets from the
scope....that seemed to be the easiest way....


thank you for your suggestions..