found at: http://fascinated.fm/post/2379188731/getting-a-motorola-sbg6580-into-bridge-mode-on
Getting a Motorola SBG6580 into “Bridge” mode on TimeWarner Wideband
- Unplug coax cable from Motorola
- Hold down the white reset button on the back panel with a pen for 30s. This resets all settings to factory defaults. The modem will be auto-reconfigured once you plug in the coax cable.
- When modem is back on plug in a computer with an Ethernet cable into the modem.
- Connect to http://192.168.0.1 and login with “admin” / “motorola”
- Now you will make some changes:
- Wireless -> Primary Network -> Disabled
- Basic -> Setup -> NAPT Mode -> Disabled
- Basic -> DHCP -> No
- Advanced -> Options -> Rg Passthrough -> Enable
- Advanced -> Options -> Passthrough Mac Addresses -> Add WAN MAC address of your router 6. Connect port 1 on the Motorola modem to the WAN port of your router.
- Plug the coaxial cable back into the modem and power cycle it.
My firmware version is SBG6580-8.9.0.1-GA-00-092-NOSH.
I can access the control panel via 192.168.0.1 and using admin/motorola for the login/password.
There a section in Basic > Setup, called Primary Mode. It has a Gateway Mode setting with the options of 'Routed' or 'Bridged'.
Anyone know if it's as simple as just switching this over to 'Bridged' in order use with another router?