Linksys Cm3008 High Speed Docsis 3.0 Cable Modem Router User Manual (+ PDF)

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Linksys CM3008 High Speed DOCSIS 3.0 Cable Modem Router


Modem Information DOCSIS 3.0 Cable Modem 8×4 channels with speeds of up to 150 Mbps on a wired connection Cox recommends a DOCSIS 3.0 16×4 or higher modem	Highest Service Level Preferred 150

DOCSIS 3.0 Cable Modem

8×4 channels with speeds of up to 150 Mbps on a wired connection

Cox recommends a DOCSIS 3.0 16×4 or higher modem

Preferred 150


Front View Click to enlarge.

Back View Click to enlarge.		The modem includes the following connection ports: POWER – Connects to the power adapter ETHERNET – Connects devices to the 10/100/1000 RJ45 Ethernet port CABLE – Connects to a coaxial cable

MAC Address Click to enlarge.		The information below is usually found on a sticker located on the bottom of the modem. The S/N is the serial number of the Linksys CM3008 modem. The CM MAC is the MAC address of the Linksys CM3008 modem.

The lights indicate the current status of your modem. To troubleshoot any connection problems, use the table below.

Modem Light	Status	Problem
Power	On	The modem is powered on.
Power	Off	No power – Verify power supply connections and electrical outlet. Ensure the outlet is not connected to a switch. Press the Power ON/OFF button on the back of the modem to ensure it is turned on.
Receive	Solid Blue	Multiple downstream channels are in use.
	Solid Green	One downstream channel is in use.
	Blinking	Scanning for downstream channels. – Verify all cable connections and try resetting the modem.
Send	Solid Blue	Multiple upstream channels are in use.
	Solid Green	One downstream channel is in use.
	Blinking Green	Scanning for an upstream channel. – Verify all cable connections and try resetting the modem.
	Off	No upstream channels are in use. – Verify all cable connections and try resetting the modem.
Status	On	The modem is online.
	Blinking	The modem is registering a connection.
	Off	The modem is offline. – Verify all cable connections and try resetting the modem.
Ethernet	On	A device is connected to the Ethernet port.
	Blinking	Data is being transferred over the Ethernet connection.
	Off	No device is connected or the device is disabled. – Verify all cable connections and try resetting the modem.
Reset Button	N/A	Press and hold for five seconds to restore settings to factory defaults and reboot the modem.