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594330-001-b 9/2014
SURFboard
®
SB6121
DOCSIS
®
3.0 Cable Modem
ICON LED STATUS
Green (ON): Indicates power to the modem is properly connected
Green (ON): Indicates a downstream (receive data) channel
connection
Blue* (ON): Indicates a bonded downstream (receive data) channel
connection
Green (ON): Indicates an upstream (send data) channel connection
Blue* (ON): Indicates a bonded upstream (send data) channel
connection
Green (ON): Indicates Internet connectivity
Amber (ON): Indicates a device, computer, or router is connected
to the Ethernet port and is operating in Ethernet (10Base-T) or Fast
Ethernet (100Base-T) mode
Blue* (ON): Indicates a device, computer, or router is connected to
the Ethernet port and is operating in high-speed Gigabit Ethernet
(1000Base-T) mode
*High-speed data service may not be available in your location. Check with your
service provider for more information.
Modem Label
Place
Label
Here
During normal operation, the
POWER, RECEIVE, SEND, and
ONLINE LEDs should always be
lit SOLID. The LINK LED should
FLASH during data transfer.
Note: During startup, all LEDs will
rst FLASH and then light up
SOLID in sequence. If an LED
lights up SOLID and the next LED
does not FLASH, please contact
your service provider for assistance.
Please note: The modem label
is located on the bottom of
your SB6121 cable modem. It
contains specic ID information
for your modem.
To receive cable service, your
service provider may request
the Media Access Control
(MAC) address (see HFC MAC
ID) and Serial number (see
S/N) listed on the modem label.
Front Panel LEDs
(24 pages)
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