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IP range and router

Hi,
My W2000 network has a dchp server running with IPrange 192.168.1.100-192.168.1.200.
Now we have an ADSL router/modem with a fixed IPadres 10.0.0.138. I only can acces the modem when I change the IP adres of an networkcard to 10.0.0.150 but then the network can't be accessed. How can I resolve this.

Thanks
M. Remij

Xenix

Try to add the routers IP adress to the default gateways field found by pressing the "advanced" button under properties for you tcp/ip protocol.

A possible cause of the problem is that the router acts as a DHCP server too, to test this try to kill your existing DHCP server and leave your client(s) ip-settings at "Obtain IP-adress automatically" and see if they still get an IP-adress.

hdane

If you want all of your clients to have access to whatever is on the other side of the modem, then add the router's IP as Default gateway to the parameters that are passed to the clients with a DHCP response.
And for checking if the router acts as DHCP server it's much easier to telnet to it and check that, without messing with the server.

Remind-it

ASKER

In the DHCP scope options I added the 003 router with the IPaddress 10.0.0.138. Still clients had no access to the internet. Because I can't ping the modem from a workstation I presume it is not accessible by the client.

hdane

Well, if you have no reasons to keep the current IP of the router, change it to one from your network. Change the DHCP settings, so the new router's IP is reserved.

You haven't said if you checked the router. Maybe it's eth interface isn't running for some reason.

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Les Moore

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chefboy4

Sounds like your cable modem isn't on the same subnet mask as your network so you can't access it. 192.168.*.* has a subnet mask of 255.255.255.0 whereas the 10.*.*.* has a subnet mask of 255.0.0.0. The modem and the network have to be on the same subnet mask.. So Either change your DHCP for your network or the address of the router to 192.168.1.1 and put a reservation in your DHCP scope for it.

Remind-it

ASKER

The router was preconfigured,my serviceprovider where I bougth the router/modem told me I couldn't change the IP address. Youre solution would be the best one for me. But I called the manufacturer of the modem and they told me how to change the IP address of the modem.(change the ip.ini file, this wasn't mentioned on their website or documentation)

Thanks for the responses