Update...
Ended up having to run a second drop to the basement to feed the switch I installed earlier this year. The UVERSE box has to be plugged into the supplied UVERSE router but I want the switch plugged into the new ASUS router. Everything is up and running and tests fine in normal use, but now I'm getting "Double NAT" messages on the XBox. I have a feeling I missed something when changing settings on the UVERSE gateway and new router.
There is amazingly little specific information on setting the UVERSE box into IP Passthrough. Rather, there is little in the way of a comprehensive set of step-by-step instructions. Most of what I find is either overly generic or piecemeal. Culling through everything I could find, I developed the instructions below as a more complete instruction set.
Before I start punching buttons, could you more network-savvy types to give them a glance and see if I'm going to totally FUBAR something?
Thanks,
Brad
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IP Passthrough setup for AT&T UVERSE service which includes UVERSE TV and uses an NVG510/589 modem/gateway.
NVG510/NVG589:
Unplug all ethernet cables. This includes cables for any UVERSE TV and WAP equipment.
Plug the computer being used for programming into LAN port 1.
Login to the NVG5xx (192.168.1.254)
Go to 'Home Network' then 'Subnets & DHCP'.
Leave the Device IPv4 address as 192.168.1.254.
Leave the Subnet Mask as 255.255.255.0.
Change 'DHCPv4 Start Address' to 192.168.1.1 (or whatever your above Device IPv4 address is but with a 1 at the end instead of .254)
Change 'DHCPv4 End Address' to 192.168.1.253.
Click 'SAVE' at the bottom, if available.
Under 'Home Network' go to 'Wireless'. Turn off wireless.
Click 'SAVE' at the bottom, if available..
Under 'Firewall' go to 'Packet Filter'. Disable Packet Filters.
Click 'SAVE' at the bottom, if available.
In NAT/Gaming, delete any personal settings or entries.
Click 'SAVE' at the bottom, if available.
Under 'Firewall' go to 'IP Passthrough'. For 'Default Server Internal Address', enter 192.168.1.1.
Click 'SAVE' at the bottom, if available.
For 'Allocation Mode' select 'Default Server'.
For 'Passthrough Mode', select 'DHCPS-Fixed'
Enter the MAC address for your personal router
Click SAVE. Do not reboot if prompted.
Go to 'Firewall Advanced' at the top and turn everything OFF.
Click SAVE.
Reboot the router.
PERSONAL ROUTER (in this case, text below includes values and menu locations for my ASUS application -Brad)
Unplug all ethernet cables. Plug the computer being used for programming into LAN port 1.
Log into your router using the router’s IP address. (192.168.1.1).
Under ADVANCED settings, go to LAN and change the address from 192.168.1.1 to 192.168.2.1
Under ADVANCED settings, go to WAN and make sure the WAN connection type is set to AUTOMATIC IP.
SAVE if the option is available.
Turn off or power down your router.
Disconnect the programming computer.
Connect your router to the NVG5xx. The cable should run from the LAN port 1 connection on the NVG to the blue WAN port on your router.
Reboot the NVG5xx by unplugging the power cord for ten seconds, then reconnecting.
When the NVG5xx is fully rebooted, power up your router.
Once your router is fully booted, check network and wifi connectivity. If satisfactory, plug your cabled devices into your router. Log on wireless devices using the wifi password for your new router.
Reconnect all UVERSE TV equipment to the NVG5xx router’s LAN ports.