I had cable internet for a very long time. With cable internet there is hardly any problem in configuring the cable
modem and the router because a cable modem normally is without a router it does not have its own IP
Address you only have to configure the router and if it is a DHCP IP Address i.e dynamic Address it is even more easy.
Recently I also signed up for DSL. THE ISP gave me ZTE-831 which is a DSL modem with a 4-port router. It has it's own
IP Address 192.168.1.10. I connected it to a D-Link Router DIR 655 which has an IP Address of 192.168.0.1. If the configuration
settings of the DLink Router is set to dynamic it works. The Gateway which used to be 192.168.0.1 when only the Dlink Router was used and no other router[typical scenario when used with a cable modem] is now 192.168.1.10 which is the the IP Address of the ZTE-831. What does this signify? Are both routers being used or only one?
If ZTE -831 is also a router besides a DSL modem then can it be directly connected to a switch bypassing the Dlink?
The DLink and ZTE-831 IP addresses are on different subnets which means that they have their own private networks. If the
Dlink router is connected as well as the ZTE-831 what static addresses should be given so that they work [this is necessary in case of Windows 2008 Server]. Secondly to avoid this imbroglio why not have a DSL modem without a built in router?