Re: U-verse for BUSINESS? : 2Wire 3600HGV bridge mode? or another AT&T supported VDSL modem?
06-21-2013 04:42:46 PM
This is an old post but seems very relevant to what I am trying to do.
I had my RG 3800 set up as a "dumb modem" with an Time Capsule doing NAT and wired and wireless for a couple years. All was well until I had a tech (not ATT) in to install broadband dial out for my home security system. It was disasterous... took all day and when the guy left my Apple gear was unplugged. The good news is that the network was working, though in ATT standard configuration and the security system was working. I have spent two days and found at least three different recipes for getting back to RG 3800 being the modem, the Time Capsule doing the rest. This post looked worth a try. Where I know it fails is when I attempt to put the Time Capsule in DMZ. I get the message that the device has a static IP. In Airport Utilities>Internet> Connect Using: is set to DHCP, IPv4 Address: 192.168.1.66, The Renew DHCP Lease does nothing. Router Address is 192.168.1.254, DNS is same. When I look at LAN devices on the RG I have a device with IP of 70.138.xxx.xx which looks like the Gateway's WAN IP This is shown as a DMZ device with a disabled firewall, Public WAN IP mapping and Router WAN IP. I have restarted the Time Capsule several times with the same result. I am not keen to take the RG down as I do have an internet connection... can ask this question and maybe get an answer.