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Motorola MB7420

Details

     

Modem Information

DOCSIS 3.0 Cable Modem

16x4 channel bonding

Compatible with future speed increases.

Highest Service Level

Ultimate

   

Front View

front view of the MB7420

Click to enlarge.

After the cable modem is successfully registered on the network, the Power, Upstream, Downstream, and Online indicators illuminate continuously to indicate that the cable modem is online and fully operational. For more details, refer to the Modem Lights section.

     

Back View

Back of MB7420

Click to enlarge.

 

The Asus CM16 has the following ports available on the back of the modem.

  • RESET - Use this button to reboot the modem or restore to factory defaults. It is recessed to prevent accidental resets.
  • ETHERNET - Connects to the 10/100/1000 Ethernet ports on your computer.
  • CABLE - Connects to the cable wall outlet.
  • POWER - Connects the modem to the power cord.
     

MAC Address

MAC Address of MB7420

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.

Modem Lights


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

Modem Light Status Problem
Power

Power light
 
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

Downstream light
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. If cable is OK and modem reset does not work, contact Customer Support.
Solid Green None. One downstream channel is in use.
Blinking Green Scanning for downstream channels. Verify all cable connections and try resetting the modem. If cable is OK and modem reset does not work, contact Customer Support.    
Upstream

Upstream light
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. If cable is OK and modem reset does not work, contact Customer Support.
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. If cable is OK and modem reset does not work, contact Customer Support.
Off No upstream channels are in use. Verify all cable connections and try resetting the modem. If cable is OK and modem reset does not work, contact Customer Support.
Online

Online light
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. If cable is OK and modem reset does not work, contact Customer Support.
Ethernet LAN

Ethernet light
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. If cable is OK and modem reset does not work, contact Customer Support.

Manufacturer Resources

For more detailed technical information on the Motorola MB7420, use the resources below from Cisco.

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