Originally posted by: JackMDS
Modems usually do not have an IP, Unless it is a Modem/Router combo.
If it is a combo plug it first to a computer, disable the Router Part, and use it as a Modem
:sun:
DSL Modems DO have external and internal IPs (external is optionally programmable). Internal IPs. You gotta think about business customers and not residential. Businesses will more than likely want to pass the IP traffic through to a firewall (maybe sonicwall) which will use the external IP. Using NAT, you would setup the modem to pass traffic from 69.42.45.250 (external "my ip") to 69.42.45.251 internal to firewall and then the firewall would pass through from 69.42.45.251 to 192.168.0.1 and the router (in this case the dlink) would use NAT (network address translation) to mask your internal network. There ya go.
I work at an ISP that deals with Speedstreams all the time. They have a default IP of 192.168.0.1. They have that in case the customer needs to bridge the network or pass through VPN. Also, it helps to use that to program the modem.
You wont be able to get to it through the WAN port on the Dlink. You need to plug directly into the modem and type in the IP. If that doesn't work do this:
GO to a command prompt
Type in TELNET 192.168.0.1
Login and you will get command line interface...
Of course, speedstream sucks ass though...
Don't turn off the router feature on the Speadstream, it wont help. The built in switch/router on those are generally seperated ICs from the modem (PPPoE or PPPoA VCMUX or UBR???). Generally, if you had a comtrend 507 sitting next to a dlink 604 router, you would have what you have got.
Oh yeah...big flag here...MAKE SURE YOUR GATEWAY IS SET TO THE MODEM'S IP ADDRESS