8
MB7621 Lights
LIGHT
COLOR
DESCRIPTION
Power
Green
ON:
Cable modem power on
OFF:
Cable modem power off
Downstream
Green
or
Blue
Green
Blinking:
Scanning for DS channel
Green
ON:
Connected on
1 downstream channel
Blue
Blinking:
Negotiating
bonded channel(s)
†
Blue ON:
Bonded with 2 or more
channels
Upstream
Green
or
Blue
Green
Blinking:
Ranging in progress
Green
ON:
Connected on 1 channel
Blue
Blinking:
Negotiating bonded
channel(s)
†
Blue ON:
Bonded with 2 or more channels
OFF:
Upstream not connected
Online
Green
Blinking: Trying to go online
Green:
Online
OFF:
Offline
LAN
Green
Blinking: Ethernet data is flowing
Green:
Ethernet port linked
Rear Panel
Ethernet LAN
ports
Green
or
Amber
Blinking: Ethernet data is flowing
Green:
Connected at 1 Gbps
Amber: Connected at 10 or 100 Mbps
OFF: No connection
†
If a blue Upstream or Downstream light blinks continuously, this indicates
partial service (at least one designated channel has not completed bonding).
You should still get high Internet speeds, but your service provider may want
to know so they can adjust their network.
