Here is a link I found at DSL Reports about bridging a Motorola NVG589. http://www.dslreports.com/faq/17734
It advises to write down the WAN-side MAC Address of your personal router (i.e., my TC). Please help me on this point. My AirPort Utility shows an IP Address 192.168.1.66 and shows a LAN IP Address 10.0.1.1. Is the WAN-side MAC Address one of these? Which one?
For convenience sake, I'll copy the steps provided in the link above. Please let me know your thoughts about this approach.
First, make srue you have a notebook or a computer that you can directly connect to the NVG589. Once you have that, unplug all Ethernet cables (including television STBs) from the NVG589 except for the aforementioned notebook/computer.
Second, write down the WAN-side MAC Address of your personal router.
Now, for the steps to do inside the NVG589's configuration.
Note: 192.168.10.1-254 address block is a suggestion in this series of steps. Change as your wish.
1. Log into the NVG589's web-based configuration interface in your web browser.
2. Go to "Home Network" -> "Subnets & DHCP". It may ask for your NVG589's password.
3. If your "Device IPv4 Address" is in the same subnet as your personal router, change it to something else like 192.168.10.254. The subnet mask stays the same, 255.255.255.0.
4. Change the "DHCPv4 Start Address" to 192.168.10.1.
5. Change the "DHCPv4 End Address" to 192.168.10.10. We need a few NVG589 LAN side IP addresses for an WAP extenders for Wireless STBs and the Television STBs. The television STBs can't be connected to your personal router. It is important that you have only your computer that's configuring the NVG589 connected to it at this time.
6. Click "Save" at the bottom.
7. Go to "Home Network" -> "Wireless".
8. Disable Wireless by choosing "Off" in the "Wireless Operation" option.
9. Go to "Firewall" -> "Packet Filter". Click on the "Disable Packet Filters" button.
10. Go to "Firewall" -> "NAT/Gaming" and disable any and all settings.
11. Go to "Firewall" -> "IP Passthrough". Select "Passthrough" in the "Allocation Mode" option.
12. Type in 192.168.10.1 for the "Default Server Internal Address".
13. In the "Passthrough Mode" selection choose "DHCPS-Fixed".
14. Type in the WAN-side MAC Address for your router under "Manual Entry", lowercase is fine.
15. Click "Save" at the bottom. It will tell you that it needs to reboot, don't do this yet.
16. Go to "Firewall Advanced" at the top and turn everything off.
17. Near the top of your screen, you should see an option telling you to reboot the router. Go ahead and do this now. It takes about 2 minutes.
Now for your settings for your personal router.
1. Unplug your laptop and plug in your personal router while the NVG589 reboots.
2. Plug your laptop into your personal router and login to it.
3. Log into your personal router and change the Internet connection type to DHCP as per your router's instructions.
You should be done configuring bridge mode now.