Netgear CMD31T Nighthawk Cable Modem user manual
- June 7, 2024
- Cox
Table of Contents
Netgear CMD31T Nighthawk Cable Modem
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Modem Information
DOCSIS 3.0 Cable Modem
4×4 channel bonding with speeds of up to 50 Mbps on a wired connection
Cox recommends a DOCSIS 3.0 16×4 or higher modem
DOCSIS 3.0 modems with 4×4 channel bonding have a maximum speed of 50 Mbps on the Cox network.
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Highest Service Level
Essential
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Front View
| | After the cable modem successfully registers on the network, the Power
, Upstream , Downstream , and Internet indicators illuminate
continuously to indicate that the cable modem is online and fully operational.
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Back View
| | The modem includes the following connection ports:
- POWER – Connects the cable modem to the power adapter
- REBOOT – Restores factory settings
- ETHERNET – Connects to the Ethernet port
- CABLE – Connects to coaxial cable with broadband
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MAC Address
| | The information below is usually found on a sticker located on the bottom of the modem.
- The S/N is the serial number of the Netgear CM600 modem.
- The CM MAC is the MAC address of the Netgear CM600 modem.
Troubleshooting
The modem lights indicate the current status of your modem. To troubleshoot connection problems, use the table below.
| Modem Light | Status | Problem |
|---|---|---|
| POWER | Solid Green | Operational |
| Off | No power. Verify power supply connections and electrical outlet. | |
| ONLINE (Cable Link) | Blinking Green | Modem is online and operational. |
| Off | Cable modem offline. Verify all cable connections and try resetting the |
modem.
US
(Upstream)| 1/2 solid amber| Upstream channel 1 in use.
1/2 solid green| Upstream channel 1 and 2 in use.
3/4 solid amber| Upstream channel 1, 2, and 3 in use.
3/4 solid green| Upstream channel 1, 2, 3, and 4 in use.
Off| No Upstream channel in use.
DS (Downstream)| 1/2 solid amber| Upstream channel 1 in use.
1/2 solid green| Upstream channel 1 and 2 in use.
3/4 solid amber| Upstream channel 1, 2, and 3 in use.
3/4 solid green| Upstream channel 1, 2, 3, and 4 in use.
Off| No upstream channel in use.
ETHERNET| Solid Green| A device is connected and detected on the 1-Gbps
Ethernet Port.
Blinking Green| Data traffic on the 1 Gbps Ethernet port.
Off| No devices detected on the Ethernet port. Verify all cable connections
and try resetting the modem.
Manufacturer Resources
For more detailed technical information on the Netgear CMD31T, use the resources below from Cisco.
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>