My cable modem is connected to my Tmobile@Home router (Linksys Wireless G with 2 Phone Ports WRTI54G-TM). When I connect my DIR655 to it, nothing on the DIR655 work.
[cable modem]----[tmobile@home]----[dir655]
But when I have the DIR655 connected to the cable modem, and the tmobile at home connected to the dir655, it seems like everything works.
[cable modem]----[dir655]----[tmobile@home]
The 2nd case doesn't help me. I tried to Google this problem and people said to turn off DHCP on the 2nd router, the [dir655], and to set it to static. But Static IP asks for a bunch of weird information that I don't know.
The IP address for my dir655 is 196.168.0.1. The IP addresses of the devices connected to this is around the 190 to 199's.
The IP address for my tmobile@home router is 196.168.0.254, but when I connected it to my Dlink 655, it changes to 196.168.24.254. The IP address of the laptop I connected via wire for this is 192.168.24.100. It can connect fine to the internet.