• Español
  •  
  • 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

Troubleshooting the Scientific Atlanta DPC2100 Cable Modem

Last Updated: Wed, 16 Jul 2014 > Related Articles

31 rated this

Summary

View details of the available ports and an explanation of the status lights on a Scientific Atlanta DPC2100 cable modem.

Solution

Installation

 

If you need help setting up your cable modem, refer to the following articles:


The Scientific Atlanta DPC2100 is a DOCSIS 2.0 cable modem.
 

Front View
  


After the cable modem has successfully registered on the network, the POWER, RECEIVE, and CABLE 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 Scientific Atlanta DPC2100 has the following ports available on the back of the modem:

  • Power - Connects the cable modem to the power adapter
  • RST - Resets the cable modem
  • ETHERNET - Connects to the Ethernet port on your computer
  • USB - Connects to the USB port on your computer
  • CABLE - Connects to the cable wall outlet

Modem Lights

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


Ethernet Connection - Modem functioning correctly
 


No Connection - Modem functioning correctly
 

 
Modem Looking for Cable Connection

Modem LightStatusProblemSolution
PowerOffNo powerVerify power supply connections, the power switch on the modem itself, the electrical outlet, and make sure the outlet is not connected to a switch.
FlashingAn error has occurred during normal operation.Verify coaxial cable connection and try resetting the modem. If cable is ok and reset doesn’t work, contact Customer Support.
ReceiveFlashingNone. Transmitting or receiving dataN/A
SendFlashingNone. Transmitting or receiving dataN/A
CableSlow
Flashing
Searching for cable connectionVerify all cable connections and try resetting the modem. If cable is OK and modem reset doesn't work, contact Customer Support.
Fast Flashing ModemSearching for cable connectionIf this is a new modem or a replacement modem, you must contact Cox with your MAC address. If there are several MAC addresses on the modem, use the HFC or RF MAC address. View MAC Address Label.
OffNo cable connection.Verify all cable connections and try resetting the modem. If cable is OK and modem reset doesn't work, contact Customer Support.
PCFlashing GreenNone. Successfully found the computer through an Ethernet connection. Cable modem transmitting data.N/A
OffNo Ethernet found.Verify Ethernet cable connections, the TCP/IP settings and the NIC. You might need to reinstall the NIC drivers. If this does not resolve the issue, contact Customer Support.

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?