Help On Multinet

Hi All,
I have a question on multinets.

I Know that W2K/W2003 DHCP Srv can manage Multinet by superscopes.

Searching on Internet I found a lot of tech docs that talk about this function without explaning how can, the DHCP Server, relay the right IP Address to the different clients on the different subnet.

Let's make an example:

I have 2 subnet (192.168.0.0/24 and 192.168.1.0/24) on the same physical network.
I have a W2k server with 2 NIC, one for each subnet.
The W2k server is also the DHCP server.

If I add a new Host, how, the DHCP Server, can decide if assign a 192.168.0.0/24 address instead of 192.168.1.0/24 address?

Remember that I have only one physical network and the DHCPDISCOVER datagram electrically comes to both the Server NIC.


Thank you very much.

Bye.

You configure the client to which one it will except as its permanent address. when the client PC first boots it will get a temp IP address ( which is why you want a very low lease time) then will get a permanent address after it request which network it wants to be on. hope this makes sense.

For those that dont know..

Multinet—A BBSM server that is configured to support both private and public IP addresses is classified as multinet because the internal NIC is configured with two distinct logical subnets.
Singlenet—A BBSM server that is configured as a single logical subnet and supports only one subnet of IP addresses is classified as a singlenet.

Out of curiosity what is it you are trying to accomplish with the multinet? why do you want public and private IPs in the same physical network? this is always a security risk to me.
This creates a bridge and a sniffer from any jack would pick up the traffic from both networks.

In reality I dont want Public and private on the same net, I want 2 different private subnet on the same physical net and I wonder HOW a common DHCP (a multihomed server with 2 NIC, one x subnet) can decide which scope apply when a new and unknow host asks for an IP address.

MS docs and other Indipendent sources say that this is possible w/out explaining how this can happen.

I dont belive them until I see it, and in fact I tried to configure a similar scenario w/out results.

About your explanantion, xcuse me but I didnt understood.