Motorola MB7621 Cable Modem manual

Motorola MB7621 Cable Modem

Modem Information DOCSIS 3.0 modem 24×8 channel bonding To achieve Gigablast or Ultimate Classic speeds, a DOCSIS 3.1 modem is required	Highest Service Level Ultimate 500

Front View Click to enlarge.		After the cable modem is successfully registered on the network, the Power, Downstream, Upstream, and Online indicators illuminate continuously to indicate that the cable modem is online and fully operational.
Back View Click to enlarge.		The Motorola MB7621 has the following ports and buttons available on the back of the modem. RESET – Press and hold this recessed button at least 10 seconds to restore to factory defaults and reboot the modem (login/Reset instructions) ETHERNET – Connects devices to Ethernet ports COAX – Connects to a coaxial cable ON / OFF – Turns the modem on and off POWER – Connects to the power adapter
MAC Address Click to enlarge.		MAC addresses are written as 12 digits containing both letters and numbers (0-9, A-F).A MAC address is unique. The first six characters of the MAC address are unique to the manufacturer of the device.

Troubleshooting

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

Gateway Light	Status	Problem
Power	On	None – the modem is powered on
	Off	No power. Verify power supply connections and electrical outlet. Ensure the outlet is not connected to a switch. Press the ON/OFF button on the back of the modem to ensure it is turned on.
Downstream	Solid Blue	None – multiple downstream channels are in use
	Blinking Blue	Negotiating multiple downstream bonded channels. Verify all cable connections and try resetting the modem.
	Solid Green	None – one downstream channel is in use
	Blinking Green	Scanning for downstream channels. Verify all cable connections and try resetting the modem.
Upstream	Solid Blue	None – multiple upstream channel is in use
	Blinking Blue	Negotiating multiple upstream bonded channels. Verify all cable connections and try resetting the modem.
	Solid Green	None – one upstream 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.
Online	On	None – the modem is online
	Blinking	None – the modem is registering a connection
	Off	The modem is offline. Verify all cable connections and try resetting the modem.
Ethernet LAN Ports	Green	None – a device is connected to the Ethernet port and is using 1 Gbps LAN speed
	Amber	None – a device is connected to the Ethernet port and is using 10 or 100 Mbps LAN speed
	Blinking	None – 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.