Help configuring DLink 704 Router to share Cable Modem connection

[alebuda]

Hi all,
I'm a novice to networking, so please forgive the likely trivialness of my question.
I'm trying to configure my DLink 704 router in order to share DSL Motorola Cable Modem Internet connection.
My ISP allows only one Internet connection; DLink wizard allows cloning my 1st PC's MAC, and that should be all.
I connected 1st PC to a DLink LAN port, and DLink WAN port to Cable Modem.
Then I set up my 1st PC's IP as 192.168.0.2 and connected to DLink's configuration software (which default IP is 192.168.0.1). DLink has correctly cloned PC's MAC address. Finally I set up my PC as DHCP client, but there's no way to cascade with Cable Modem.
Cable Modem's local IP address is 192.168.100.1, subnet 255.255.252.0: I don't know if this is a problem.
Can anyone please help me?
Thanks in advance

 

[xsquid]

There are several things that need to be clarified. When you say that your ISP allows only one internet connection. Are you required to provide them with your mac address?

If not, the defaults for router installation should be sufficient. In other words, DHCP client on the router and DHCP server on the router. This will allow the router to ask the cable modem for an IP address. You shouldn't need to worry about cloning anything, although it shouldn't hurt anything. The DHCP Server will allow the router to assign an IP address to your pc. You will need to make sure that your pc is set to obtain an ip address automatically.
I am not sure what you are concerned about as far as cascasding with your cable modem.

The way this should work is that you cable modem is attached to the WAN port on the router. The router gets an IP address passed through the cable modem. You should be able to see that in the status screen of the router. It will be called the WAN link or something like that, and should have a ip assigned. It won't be a 192.100 or 192.168 address. Your Cable modem tech support can give you some idea of waht the range might be. There should be some sort of release and renew for the wan side in the router. If not try powering the cable modem and the router off and bring the modem up first, then the router. Then log into the router and see what you get.
As far as PC's on the LAN side, they all plug into the LAN ports on the router and should all get 192.168.0.X. IP addresses.

But I would start with the WAN side, making sure you get a WAN ip address that would be consistent with what you would get if you had one pc connected directly to the cable modem.

 

[mezaim]

After you have cloned your MAC address tab over to the status page and in the middle section there is a WAN section that will need to have dhcp released if any already assigned and released. From there power cycle your modem and then your router, after about 1 to 2 minutes repower modem first, wait for lights and then power on your router. Open up your browser again load the web config page and go back to the status page do a dhcp renew and you should be in business. Also make sure that the original computer that was first attached to your modem when first setup is the one being cloned (MAC).

 

[alebuda]

Thanks a million to xsquid and mezaim...
but I must beg their pardon...
After a hundred attempts, I discovered my router was not working fine... When I got a new one, it was as simple as cloning mac address, set up PC1 as DHCP client and wait a minute to go!
(...Much ado about routing!)