Hardware Overview
18
AC1900, N900, and N450 WiFi Cable Data Gateways
Power • Solid green. The cable data gateway is receiving power.
• Blinking green. The
cable data gateway is powering on.
• Blinking red.
The cable data gateway is performing a self-test or the thermal
cutoff circuit was triggered.
• Off.
The cable data gateway is not receiving power.
Note: If the Power LED lights red or blinks red at any other time than while booting,
see Troubleshoot with the LEDs on page 155.
Downstream
• Solid blue. More than one downstream channel is locked.
• Solid green. One downstream channel is locked (channel bonding does not
occur).
• Blinking green.
The cable data gateway is scanning for a downstream
channel.
• Off. No downstream channel is locked.
Upstream
• Solid blue. More than one upstream channel is locked.
• Solid green. One upstream channel is locked (channel bonding does not
occur).
• Blinking green.
The cable data gateway is scanning for an upstream channel.
• Off. No upstream channel is locked.
Internet
• Solid green. The cable data gateway is connected to the Internet.
• Slow blinking green.
The cable data gateway is receiving DHCP information
from the cable provider’s cable modem termination system (CMTS).
• Fast blinking green. The
cable data gateway is downloading a configuration
file from the cable provider’s CMTS.
• Off.
The cable data gateway is not connected to the Internet.
LAN
The type of Ethernet connection determines the LED color:
• A green LED indicates a 1,000 Mbps connection.
• An amber LED indicates a 100/10 Mbps connection.
The LED functions are as follows:
• Solid green or amber. The
Ethernet port is connected to a powered-on device.
• Blinking green or amber. Data is being transmitted or received on the Ethernet
port.
• Off.
The Ethernet port does not detect a powered-on device.
Table 3. LEDs and front panel buttons of the N450 (continued)
LED Icon Description
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