NETGEAR CM2000 Nighthawk Multi-Gig Cable Modem user manual

June 7, 2024
Cox

NETGEAR CM2000 Nighthawk Multi-Gig Cable Modem

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Modem Information

DOCSIS 3.1 Cable Modem

32×8 channel bonding

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Highest Service Level

Gigablast

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Front View

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| | After the modem is successfully registered on the network, the Power , Downstream , Upstream , and Internet indicators illuminate continuously to indicate that the modem is online and fully operational.
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Back View

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| | The Netgear CM2000 has the following ports and buttons on the back of the modem.

  • Reset – Restores the default factory settings. This button is recessed to prevent accidental resets of your modem.
  • Multi-Gig 2.5G/1G LAN – Connect a 2.5 Gbps Ethernet cable using this port.
  • Cable – Connect a coaxial cable line using this port.
  • DC – Connect the power cable using this port.

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MAC Address

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| | 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 the modem. To troubleshoot any connection problems, use the table below.

LED Light Status Problem
Power Off No power. Verify all cable connections and reset the modem.
Solid White None. The modem is receiving power and functioning normally.
Solid Red The modem is too warm and may overheat. Disconnect the power

adapter and allow the modem to cool down for a few minutes. Once the modem has cooled, ensure it is placed in a vertical position and in a location with good ventilation before reconnecting the adapter.
Downstream| Off| The downstream channel is inactive. Verify all cable connections and reset the modem.
Solid Amber| None. A connection from the computer to the internet is established on one channel.
Blinking White| The modem is scanning for downstream channel. Verify all cable connections and try resetting the modem if the LED indicator continues to blink.
Solid White| None. A connection from the computer to the internet is established on more than one channel.
Upstream| Off| The upstream channel is inactive. Verify all cable connections and reset the modem.
Solid Amber| None. A connection from the internet to the computer is established on one channel.
Blinking White| The modem is scanning for an upstream channel. Verify all cable connections and try resetting the modem if the LED indicator continues to blink.
Solid White| None. A connection from the internet to the computer is established on more than one channel.
Internet| Off| The modem is offline. Verify all cable connections and reset the modem.
Solid White| None. The modem is online and operational.
Blinking White| The modem is synchronizing. Verify all cable connections and try resetting the modem if the LED indicator continues to blink.
Multi Gig| Off| A device is not connected to this port.
Solid| None. A device is powered on and connected to the port.
Blinking| None. The port is processing traffic.

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