I've seen so much confusion about the 2210-02-1ATT used for U-verse that I had to reply to this.
First off, there is technically a difference between "bridging" a DSL modem and setting it to "IP Passthrough". With bridging, the device behind the modem (a router or PC) acts as the endpoint of the DSL connection and the modem is basically a phoneline-to-Ethernet adapter. With IP passthrough, the DSL modem acts as the connection endpoint and just passes plain old Ethernet Internet over to whatever device is plugged into it. I personally prefer this method, as all the DSL-specific stuff is handled by the modem and the router doesn't require any special settings. However, some people may think that their router can run a PPPoE client better than the modem or whatever.
Either way, you accomplish the same goal of avoiding the DSL modem's crappy builtin NAT router. Your own router gets the straight Internet connection without the modem mucking it up.
The new 2210-02-1ATT is used with U-verse DSL, which is IP-based rather than the old PPPoE ADSL. Because of the technical differences between the new U-verse IP-DSL and the old ADSL, I'm not sure if any current routers have the ability to act as the connection endpoint with a bridged modem. I've heard that it uses certs and such to authenticate, so I'm not sure it's even possible for a non-AT&T device to act as an endpoint with this new system. Regardless, "IP Passthrough" gives the same result, just with less configuration on and work done by your router.
fourfather wrote:I appreciate the quick reply. I don't an IP passthrough option. I can assign the public IP to the router, but that doesn't allow port forwarding. Here's a screen shot of the GUI.
Thanks again for your help.
fourfather wrote:No such luck under advanced. I have read a large amount about this modem and I can't hardly believe it, but it appears that it doesn't support port forwarding, DMZ, or anything of the sort. Here's the screenshot of the advanced tab just for your info.
The whole point of bridging/IP passthrough is so that your own router gets direct access to the Internet connection. When you pass the public IP to your own router, you don't need to do port forwarding or DMZ access or anything like that on the modem, because it's not blocking anything. Everything goes directly through the modem to your router.
People are so stuck on the word "bridging" and don't actually understand what "bridging" and "IP passthrough" mean that they look right at the option and insist it can't do it.