Table 1. LED descriptions
DescriptionIconLED
•
Solid white. Power is supplied to the cable modem.
•
Off. No power is supplied to the cable modem.
•
Solid red. The cable modem is too warm and might overheat. For
more information about this condition, see Use LEDs to Troubleshoot
on page 23.
Power
•
Solid amber. One downstream channel is locked.
•
Solid white. Two or more downstream channels are locked.
•
Blinking white. The cable modem is scanning for a downstream
channel.
•
Off. No downstream channel is locked.
Downstream
•
Solid amber. One upstream channel is locked.
•
Solid white. Two or more upstream channels are locked.
•
Blinking white. The cable modem is scanning for an upstream
channel.
•
Off. No upstream channel is locked.
Upstream
•
Solid white. The cable modem is online.
•
Blinking white. The cable modem is synchronizing with the cable
provider’s cable modem termination system (CMTS).
•
Off. The cable modem is offline.
Online
•
Solid blue. A 2.5 Gbps connection is established.
•
Blinking blue. The port is sending or receiving traffic at 2.5 Gbps.
•
Solid white. A 1 Gbps connection is established.
•
Blinking white. The port is sending or receiving traffic at 1 Gbps.
•
Solid amber. A 100 Mbps connection is established.
•
Blinking amber. The port is sending or receiving traffic at 100 Mbps.
Multi Gig Port
•
Solid white. A 1 Gbps connection is established.
•
Solid amber. A 10 Mbps or 100 Mbps connection is established.
•
Blinking white or amber. The port is sending or receiving traffic.
•
Off. No device is connected to the port.
Eth1 and Eth2
User Manual6Hardware Setup
Nighthawk CM3000 2.5 Gbps Cable Modem