• Español
  •  
  • Ashburn, VA
    Ashburn, VA

    Let us know the location you'd like to browse.

    or

    Already a Cox Residential customer?

    Looking for Business services? Go to Cox Business home

Internet

The Internet should add convenience, not headaches. From step-by-step instructions to helpful tips, we'll help you install your equipment, troubleshoot problems, and get the most out of your online experience – minus the migraine.

Back Print Article

ARRIS / Motorola SB6121

Last Updated: Fri, 05 Dec 2014 > Related Articles

46 rated this

Summary

Learn about the available ports and an explanation of the status lights on an ARRIS / Motorola SB6121 cable modem.

Solution



The ARRIS / Motorola SB6121 is a DOCSIS 3.0 cable modem. This modem is currently only recommended for the Preferred package and below. If used with a Microsoft operating system other than Vista or Windows 7, the registry keys must be updated to enable maximum speed performance.


Front View 



After the cable modem is successfully registered on the network, the POWER, RECEIVE, SEND, and ONLINE indicators illuminate continuously to indicate that the cable modem is online and fully operational. For more details, refer to the Modem Lights section.

Back View 



The ARRIS / Motorola 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

Modem Lights



The modem lights indicate the current status of your cable modem. To troubleshoot any connection problems, use the table below.

Modem LightStatusProblemSolution

POWER

OffNo powerVerify all cable connections and try resetting the modem. If cable is OK and modem reset does not work, contact Customer Support.
Solid GreenNoneN/A

RECEIVE

FlashingScanning for downstream channelVerify all cable connections and try resetting the modem. If cable is OK and modem reset does not work, contact Customer Support.
Solid GreenNone - connection from the computer to the Internet established on one channelN/A
Solid BlueNone - operating on more than one channel (downstream bond mode)N/A

SEND

OffUpstream channel inactiveVerify all cable connections and try resetting the modem. If cable is OK and modem reset does not work, contact Customer Support.
FlashingScanning for upstream channelVerify all cable connections and try resetting the modem. If cable is OK and modem reset does not work, contact Customer Support.
Solid GreenNone - connection from the Internet to the computer established on one channelN/A
Solid BlueNone - operating on more than one channel (upstream bond mode).N/A

ONLINE

OffNo connectionVerify all cable connections and try resetting the modem. If cable is OK and modem reset does not work, contact Customer Support.
Solid GreenNone - operationalN/A
FlashingNone - scanning for configuration parametersN/A

LINK

OffNo devices connectedVerify all cable connections and try resetting the modem. If cable is OK and modem reset does not work, contact Customer Support.
FlashingNone - a single device connected to the Ethernet port and data is being transferred between the computer and the cable modemN/A
Solid BlueNone - connected to 1000 MbpsN/A
Solid AmberNone - connected at 10 or 100 MbpsN/A

MAC Address Label 



MAC addresses are written as 12 digits containing both letters and numbers (0-9, A-F). A MAC address is unique. The first six characters of the MAC address are unique to the manufacturer of the device.


Rate this Article:

Related Topics:

Give us your feedback:

Feedback

Maximum 500 characters

Back Print Article

Need More Help?