• Contact Us
  • Select a Location
    Close Location Selection

    Current Location:

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

    Select a Location
    OR

    Already a Cox Residential customer?

    Looking for Business service? Go to Cox Business

support site section

Support

Netgear CM500

Details




Modem Information

DOCSIS 3.0 Cable Modem

16x4 channel bonding

To achieve Gigablast or Ultimate Classic speeds, a DOCSIS 3.1 modem is required

Highest Service Level

Preferred 250



Front View

Front View of the modem and lights

Click to enlarge.


 

  • The Netgear CM500 is a DOCSIS 3.0 device.
  • The highest service level is based on wired connectivity speeds.
  • After the cable modem is successfully registered on the network, the Power, Upstream, Downstream, and Internet indicators illuminate continuously to indicate that the cable modem is online and fully operational.



Back View

Back View of the modem and lights

Click to enlarge.


The Netgear CM500 has the following ports available on the back of the modem.

  • Power - Connect the supplied power cord to this port.
  • ETHERNET - Connects to the Ethernet cable.

    Note: This is a LAN Gigabit Ethernet port.
  • RESET - Use this button in the unlikely event that you want to restore the default factory settings. This button is recessed to prevent accidental resets of your modem.
  • Cable / Internet - Connect your coaxial cable line to this port.



MAC Address

MAC label

Click to enlarge.


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.

Troubleshooting


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

Modem LightStatusProblem
Power

Power light		OffNo power - Verify all cable connections and try resetting the modem.
Solid GreenNone
RedThe cable modem is too warm and might overheat. Fix:
  1. Disconnect the power adapter.
  2. Wait a couple of minutes to let the cable modem cool down.
  3. Make sure that the cable modem is placed in a vertical position.
  4. Make sure that the cable modem is placed in a location with good ventilation.
  5. Reconnect the power adapter.
Downstream

downstream light		OffDownstream channel inactive - Verify all cable connections and try resetting the modem.
Solid AmberNone - connection from the computer to the Internet established on one channel.
Blinking AmberScanning for downstream channel - Verify all cable connections and try resetting the modem.
Solid GreenNone - connection from the computer to the Internet established on more than one channels.
Upstream

upstream light		OffUpstream channel inactive - Verify all cable connections and try resetting the modem.
Blinking AmberScanning for upstream channel - Verify all cable connections and try resetting the modem.
Solid AmberNone - connection from the Internet to the computer established on one channel.
Solid GreenNone - connection from the Internet to the computer established on more than one channels.
Internet

Internet light		OffModem Offline - Verify all cable connections and try resetting the modem.
Solid GreenNone - Modem operational
Blinking GreenNone - Modem receiving DHCP information
Ethernet

Ethernet light		OffA device is not connected to the Ethernet port on the back. - Connect a device to the Ethernet port on the back.
Solid GreenNone - A device is connected to the Ethernet port at 1000 Mbps.
Solid AmberNone - A device is connected to the Ethernet port at 10/100 Mbps.
Blinking Green or AmberNone - Ethernet port is processing traffic

Manufacturer Resources

Search for More Articles

© 1998 - 2023 Cox Communications, Inc.