Motorola's DOCSIS 3.0 Modem includes a number of major enhancements including channel bonding and IPv6. Motorola's DOCSIS 3.0 modems support DOCSIS 1.x, 2.0, and new 3.0 features.
DOCSIS 3.0 provides a number of enhancements earlier versions of DOCSIS, but most notably, channel bonding. Channel bonding enables multiple downstream and upstream channels to be "virtually-bonded" together to be used by a single subscriber. This increases downstream speeds up to 1 Gbps, and upstream throughput up to a minimum rate of 120 Mbps. Additionally, DOCSIS 3.0 supports IPv6and Internet Protocol Television (IPTV).
IPv6 greatly expands the number of Internet addresses that operators may use.
This document was developed to assist all Technical Operations employees with the proper steps of installing, configuring, and troubleshooting the Motorola SB6121 modem.
The serial number and equipment address can be found on the bottom of the modem. These items will need to be entered into CSG in order for the gateway to operate.
|CSG Field||Motorola SB6121 modem|
|SERIAL NUMBER||HFC MAC ID|
CSG Equipment Type: M1
CSG Equipment Model: SB6121
CSG Equipment Mode: 0
Connect one end of the power adapter into the modem and the other end into power outlet or surge protector.
Connect an active coax cable.
Connect the primary computer to Ethernet port on the modem using a Cat 5 Ethernet cable.
Do not set the modem in an enclosed area, near large appliances, UPS (uninterrupted power supplies), microwaves, computer monitors or 2.4GHz cordless phones.
The front panel LEDs should be used during installation, configuration, and troubleshooting. Use them as a visual reference for how and what the modem is performing.
|1||POWER||Power is disconnected||This light should not flash||Green: Power is properly connected|
|2||RECEIVE||Receive channel not found||Scanning for a receive (downstream) channel||Green: Downstream channel is connected |
Blue: Downstream channel is connected with bonded channels
|3||SEND||Send channel not found||Scanning for a send (upstream) channel||Green: Upstream channel is connected |
Blue: Upstream channel is connected with bonded channels
|4||ONLINE||Internet connection failed||Scanning for configuration parameters||Connected to the Internet|
|5||LINK||No connection to the SB6121 Ethernet port is detected||Transmitting or receiving data on the Ethernet port||Amber: A device, computer, or hub is connected via the Ethernet (10Base-T) or Fast Ethernet (100Base-T) port |
Blue: High-speed Gigabit Ethernet connection to the
|6||Power||Powers on and off the cable modem|
|During normal operation, the POWER, RECEIVE, SEND, and ONLINE lights are ON. The LINK light flashes when the cable modem is transferring data.|
The SB6121 goes through a series of steps when first connected to power and RF signal.
The SB6121 start-up steps are:
DOCSIS 3.0 modems have dual-colored LEDs to visually determine if channel bonding and Gigabit Ethernet is enabled.
Use the front panel LEDs as well as a SLM to rule out potential signal issues. If the RF levels are acceptable, most issues can be corrected by restarting the cable modem. To restart the Motorola SB6121:
|Light||Turns off during Startup:||Turns off during normal operation:|
|RECEIVE||The downstream (RECEIVE) channel cannot be acquired.||The downstream channel was lost.|
|SEND||The upstream (SEND) channel cannot be acquired.||The upstream channel was lost.|
|ONLINE||IP registration was unsuccessful.||IP registration was lost.|
|POWER||Verify the power connection.||Verify the power connection.|
User Guides, Drivers, and Datasheets can be found at:
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.