Motorola cable modem SB6121 keeps dropping off | AnandTech

If Internet connection issues with the SB6121 arise, troubleshooting may resolve the issue, or may provide insight as to what is causing the issue. This document provides helpful information for troubleshooting connection issues with the SB6121. This document contains the following sections, to be followed in sequence: Click the Configuration menu tab or menu link on the SB6121 Web Manager Menu. The Configuration screen displays. Figure 16 – SB6121 Configuration Screen-Restart Cable Modem 2. Page 24: Troubleshooting Tips Troubleshooting Tips Troubleshooting Tips If the solutions listed here do not solve your problem, contact your service provider. In some cases, the SB6121 cable modem may need to be reset to its factory default state, and clear all of the previous settings. Resetting the SB6121 to its factory default configuration will remove all stored parameters learned by the SB6121 during prior initializations. Jul 01, 2012 · Motorola Surfboard SB6121 keeps resetting / rebooting every couple of minutes, hence unable to register the modem with Comcast. The SB6121 doesn't tolerate signal issues (noise, weak signal) as much as the older ones like SB6120. Takes a long time (more than 10 minutes) to establish a link with Comcast, after powering up the modem. The ARRIS / Surfboard SB6121 has the following ports available on the back of the modem. ETHERNET - Connects to the Ethernet port on your computer; CABLE - Connects to the cable wall outlet; POWER - Connects the cable modem to the power adapter : MAC Address. Click to enlarge.

Consumers - SB6121: Factory Reset

Motorola SB6121 DOCSIS 3.0 Cable Modem

16x4 Cable Modem plus AC1600 Dual Band Wi-Fi® with DFS The Motorola Model MG7540 cable modem with built-in router supports modem speeds up to 686 Mbps. With its high speed and IPv4 and IPv6 networking support, this is a product designed and built for use today and for years to come.

Heads up, Motorola SB6121 modems are now End of Life : Comcast