Hardware Overview
10
AC1900, N900, and N450 WiFi Cable Data Gateways
Power • Solid green. The gateway is receiving power.
• Blinking green. The
gateway is powering on.
• Solid red.
The gateway is performing a self-test or the thermal cutoff circuit was
triggered.
Note: Off. The gateway is not receiving power.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.
Online
• 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.
Note: The Online LED is also referred to as the Internet LED.
2.4 GHz WiFi
• Solid green. The 2.4 GHz WiFi radio is functioning and available for use.
• Blinking green.
The 2.4 GHz WiFi radio is processing traffic.
• Off.
The 2.4 GHz WiFi radio is disabled. (If the radio is disabled, see Control
the WiFi Radios on page 109.)
5 GHz WiFi
• Solid green. The 5 GHz WiFi radio is functioning and available for use.
• Blinking green. The
5 GHz WiFi radio is processing traffic.
• Off.
The 5 GHz WiFi radio is disabled. (If the radio is disabled, see Control the
WiFi Radios on page 109.)
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 1. Front panel LEDs and button of the AC1900 (continued)
LED Icon Description