How to isolate 2 DHCP servers on 2 network hub/switch

i have a d-link wireless plus 10/100 router external ADSL modem. It has dhcp and works great connecting to the net through one network card.

i have a win2003 server and am trying to set up a DHCP server on this box without much success. This box has a 4x 10/100 PCI hub which i would like to distribute IPs to the LAN

SO u have the ADSL router's DHCP connected to the 2003 server, whose DHCP needs to deal with the LAN Ips.

i havent had much luck isolating each DHCP server on each network card

Is there any way i can use the win2003 DHCP and not just bridging the two network cards, thereby bypassing windows 2003' DHCP server?

I'm not entirely sure what you're asking, but I may understand...

You have a server which has 2 NICs - one to the local network and one two the modem. On the modem connection, you want it to obtain its address automatically from the modem. On the local network connection, you want it to give out addresses to the clients.

I've got a similar situation and it can work fine. Set up the modem on a different subnet to the main network. Give it an IP address of, say, 10.0.0.1 and setup DHCP correctly. On the server's modem connection, enable automatic configuration and check that it gets an IP address in the same subnet, 10.0.0.x.

Then, have the rest of your network on a different subnet, like 192.168.0.x. Set the local network connection to have an address of probably 192.168.0.1. Then in the DHCP management console, create a new scope which assigns in the range 192.168.0.x and make sure that this scope is activated. Any clients connecting through the local network connection configured to use a DHCP should be OK.

HTH,

Edwin

hi there, thanks for that...

every time i open the console it says the dhcp sevrer isnt activated but i see that the service starts with windows...what happening here?

hi there, did did what u mentioned when i started out but the dhcp win2003 server just wont hand out any IPs!!

FYI, i am using a crossover cable to the test client since it is the longest and that the PCI hub has a direct link port. The connection lights are on at both ends thanks

When you've setup the scope, you need to make sure that the scope is active and the server is authorised. I forget exactly the buttons to press, but there should be a little green light next to the scope name and the server name. You need to select both the server name and scope name in turn, click the Action button and press something like activate / authorise.

If you're sure you've configured your server correctly, try temporarily assigning the client a static IP address which is in the same subnet as the server. Check that the client can ping and access the server. Then, switch the configuration back to automatically obtain from DHCP server and see what happens.

yeha i put in the manual overrrides and i can see the "domain name" and the "servername".

But when i click on the server it says i dont have permission to access it

at the risk of sounding stupid but i assigned the server NIC *ONLY" the IP and subnet.

everytime i assign the gateway or the DNS server, i cant access my modem thru the web interface. even though the NIC to the modem as different subnet and is of course separate

I'm kind of lost... I thought this was a problem trying to setup DHCP



Where are you making these changes? Perhaps you could just start again and tell me exactly what the problem is.

this is in the manual override of the NIC connection !!

start>>control panel>>network connection>>local area connection

in the alternate configuration tab of the TCP/IP selection

lol now that i used the dhcp on the modem i lost the remote desktop??? why oh why lol!!!

Ps.althoughthe file server looks to be up, i can connect to it

is it but i its asks for a DNS servere anyways if u manually configure the IP rto test

I'm still really confused I'm afraid...

You've got a router. This is plugged into one NIC on your server. Your server also has another NIC which is plugged into the network.

You need to setup your router to be a DHCP server and assign addresses in, for example, the 10.0.0.x subnet. Then, on the first NIC in your server, you need to make it accept addresses from the router. Check that it successfully gets an address. It'll probably be given the address 10.0.0.2 if the router is 10.0.0.1. The default gateway should be set automatically to the IP address of the router, as should the DNS server.

Then, you need to manually setup your second NIC. Set its IP address statically to 192.168.0.1, the subnet mask to 255.255.255.0 and the default gateway should be left blank. The DNS server will probably be set to the IP address of the router. Once you've done this, setup the DHCP server in Windows. Create a new scope in the 192.168.0.x range and make sure that the server is authorised and the scope is activated.

If this still doesn't work, could you please explain exactly what's wrong in detail, as I don't really understand exactly what you're doing.

i think i might just boil down to permissions. do i get it to hand out license per user or per machine?

where is the management for this?