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Netgear CM1200

Details




Modem Information

DOCSIS 3.1 Cable Modem

32x8 channel bonding

Highest Service Level

Gigablast



Front View

Image of Front of the Netgear CM2100

Click to enlarge.

After the cable modem successfully registers on the network, the Power, Upstream, Downstream, and Internet indicators illuminate continuously to indicate that the modem is online and fully operational. For more details, refer to the Modem Lights section.




Back View

Image of back of the Netgear CM1200

Click to enlarge.


The Netgear CM1200 has the following ports available on the back of the modem.

  • Reset Button - 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.
  • LAN Gigabit Ethernet Ports - Provides internet access to a single device. Only one port is active at a time.
  • Cable / Internet Coaxial Cable Connector - Connect your coaxial cable line to this port.
  • Power On / Off Button
  • Power Adapter Input - Connect the supplied power cord to this port.



MAC Address

Image of Netgear CM1100 MAC Label

Click to enlarge.


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

Modem Lights

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

Modem LightStatusProblem
Power

power		OffNo power. Verify all cable connections and try resetting the modem. If the cable is OK and modem reset does not work, contact Customer Support.
GreenNone - Power is supplied to the cable modem.
RedThe cable modem is too warm and might overheat:
  • Disconnect the power adapter.
  • Wait a couple of minutes to let the cable modem cool down.
  • Make sure that the cable modem is placed in a vertical position.
  • Make sure that the cable modem is placed in a location with good ventilation.
  • Reconnect the power adapter.
Downstream

downstream
Solid AmberNone. Connection established on one channel.
Blinking GreenScanning for additional downstream channels.
Solid GreenNone. Operating on more than one channel.
OffDownstream channel inactive. Verify all cable connections and try resetting the modem. If the cable is OK and modem reset does not work, contact Customer Support.
Upstream

upstream		OffUpstream channel inactive. Verify all cable connections and try resetting the modem. If the cable is OK and modem reset does not work, contact Customer Support.
Blinking GreenScanning for additional upstream channels.
Solid AmberNone. Connection established on one channel.
Solid GreenNone. Operating on more than one channel.
Internet

internet		OffModem offline. Verify all cable connections and try resetting the modem. If the cable is OK and modem reset does not work, contact Customer Support.
Blinking GreenNone. Scanning for configuration parameters. Verify all cable connections and try resetting the modem. If the cable is OK and modem reset does not work, contact Customer Support.
Solid GreenNone. Operational.
LAN 1-4

ethernet		OffA device is not connected to the Ethernet port on the back. Connect a device to the Ethernet port on the back.
Blinking Green or AmberNone. An Ethernet port is transmitting or receiving data.
Solid AmberNone. A device is connected to the Ethernet port at 10/100 Mbps.
Solid GreenNone. A device is connected to the Ethernet port at 1,000 Mbps.

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