Motorola SB5101 Reference Manual
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Motorola SB5101 Reference Manual

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MOTOROLA SB5101
Cable Modem Overview
November 2004
This document, which contains proprietary product information, has been prepared for the express purpose
of allowing prospective customers to evaluate the product and service offerings of Motorola. Except as
otherwise required by law, it may not be reproduced, used by or disclosed to persons not employed by or
retained by Motorola for the evaluation and implementation of this document without the prior written
consent of Motorola.

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Summary of Contents for Motorola SB5101

  • Page 1 This document, which contains proprietary product information, has been prepared for the express purpose of allowing prospective customers to evaluate the product and service offerings of Motorola. Except as otherwise required by law, it may not be reproduced, used by or disclosed to persons not employed by or retained by Motorola for the evaluation and implementation of this document without the prior written consent of Motorola.
  • Page 2 SB5101 Cable Modem Overview Version Number Date Release Status 0.0.1 1/11/2004 Draft for Comment 0.0.2 8/11/2004 Added Beachcomber info 0.0.3 0.0.4 1.0.0 1.0.1 1.1.0 1.1.1 MOTOROLA BCS CONFIDENTIAL Page 2 of 34...

  • Page 3: Table Of Contents

    SB5101 Cable Modem Overview Table of Contents. Introduction........................4 SB5101 Key Features ....................5 SB5101 Benefits for the MSO and End User ............6 Connectivity ........................... 6 Standby Switch..........................6 User Guide ............................ 6 Modem Set Up and Diagnostics ....................6 Logistics............................

  • Page 4: Introduction

    SB5101 Cable Modem Overview 1 Introduction The SB5101 Cable Modem is a stand-alone unit with an external power supply, it is the latest product in the Motorola Surfboard range, the SB5101 will be produced alongside the existing SB5100 modem and will eventually replace it.

  • Page 5: Sb5101 Key Features

    SB5101 Cable Modem Overview 2 SB5101 Key Features ● Optimised to fully utilize 6 MHz DOCSIS Cable Channels ● DOCSIS 1.1 and 2.0 certified, backwards compatible with DOCSIS 1.0 ● USB and Ethernet network connectivity allows simple installation. ● Standby switch enhances security.

  • Page 6: Sb5101 Benefits For The Mso And End User

    3.4 Modem Set Up and Diagnostics The SB5101 has an html based web page that will allow an MSO engineer or a customer to easily troubleshoot any problems with connecting the modem onto the HFC network. In addition there is a Motorola developed program called Stormwatch which allows a dynamic GUI for both local and remote access to an individual Cable Modem.

  • Page 7: Sb5101 Architecture

    SB5101 Cable Modem Overview 4 SB5101 Architecture. The key physical component portion of the SB5101 system is the BCM3349 chip (Broadcom). The BCM3349 is a single-chip that supports the two advanced communication technologies required by the DOCSIS 2.0 specification – advanced time division multiple access (A-TDMA) and synchronous code division multiple access (S-CDMA).
  • Page 8 SB5101 Cable Modem Overview SB5101 6.4MHz with A-TDMA or S-CDMA enabled CMTS Symbol Rates 160, 320, 640, 1280, and 2560 ksym/s, 5120 ksyms/s with A-TDMA or S-CDMA enabled CMTS Operating Level Range +8 to +55 dBmV (8, 16QAM) +8 to +58 dBmV (QPSK)

  • Page 9: Docsis - Overview

    SB5101 Cable Modem Overview 5 DOCSIS - Overview Scan for Downstream Channel The DOCSIS system was developed to enable hardware and systems interoperability and automated configuration and management. Cable Modems (CM’s) and Cable Modem Termination Systems (CMTS’s) from various vendors will operate on the same network, using the common Obtain Upstream DOCSIS standards and protocols.

  • Page 10: Sb5101 Indicators And Their Use For Diagnostic Purposes

    SB5101 Cable Modem Overview 6 SB5101 Indicators and their use for diagnostic purposes. The indicators on the surfboard modem are designed to be helpful to both the end user and the network operator. The indicators allow an initial diagnosis to be made as to the likely cause of reported problem.

  • Page 11: Web Page Diagnostic Tool

    SB5101 Cable Modem Overview 7 WEB Page Diagnostic Tool. The Cable Modem has three active interfaces, the HFC, the Ethernet and the USB and each interface has both a MAC and an IP address associated with it. When operating normally it is the IP address of the HFC interface that is used for diagnostic access to the modem.

  • Page 12: The Status Page

    SB5101 Cable Modem Overview 7.1 The Status Page This Page shows the main steps in the registration process, in this case a successful registration a failed step would be marked in red. The “skipped” entry for baseline privacy is because this facility has not been activated via the configuration file.

  • Page 13: The Signal Page

    SB5101 Cable Modem Overview 7.2 The Signal Page This page shows the downstream and upstream RF signal characteristics, in this case for an operational modem. One important feature of this page is that shows the signal to noise ratio on the down stream and the power level on the upstream, both good indicators of the condition of the HFC network link.

  • Page 14: The Addresses Page

    SB5101 Cable Modem Overview 7.3 The Addresses Page This page is concerned with the link level and network level addressing in use by the modem. It serves to confirm that the correct DHCP information is being used and it also identifies the client CPE in use, in this case limited to one device.

  • Page 15: The Configuration Page

    SB5101 Cable Modem Overview 7.4 The Configuration Page This page allows the option (if made available) of configuring locally some of the parameters that govern the behaviour of the modem. One possibility is to disable the built in DHCP server perhaps because a client is already using the same address band.

  • Page 16: The Logs Page

    SB5101 Cable Modem Overview 7.5 The Logs Page. This page can be very useful as it shows what has happened to the modem since power on. The log space is used in a cyclic manner and the most recent entry is at the top. In this case the modem has gone into normal operating mode and the timestamps start when the modem has contacted the time of day server.

  • Page 17: The Help Page

    SB5101 Cable Modem Overview 7.6 The Help Page This final page serves to explain the function of the previous pages as well as containing information on the software versions in use. MOTOROLA BCS CONFIDENTIAL Page 17 of 34...

  • Page 18: Stormwatch

    SB5101 Cable Modem Overview 8 Stormwatch Stormwatch is a diagnostic tool to monitor and troubleshoot Cable Modems from the CPE or Head- End. Stormwatch provides a real-time visual status of SURFboard Cable Modems it also provides the status of the standard SNMP objects on any DOCSIS Modem...

  • Page 19: Operational Data

    SB5101 Cable Modem Overview 8.1 Operational Data This page shows general information about the modem, in particular what version of software is in use. MOTOROLA BCS CONFIDENTIAL Page 19 of 34...

  • Page 20: The Operational Status Page

    SB5101 Cable Modem Overview 8.2 The Operational Status Page. This page shows the operational status of the modem, in this case fully operational. As this is a dynamic page variations in signal to noise or power levels can be viewed in (almost) real time. In this case the screen shows that the modem has loaded a configuration file called generic.cm...

  • Page 21: The Operational Statistics Page

    SB5101 Cable Modem Overview 8.3 The Operational Statistics Page. The main feature of this page is to confirm how long the modem has been operating MOTOROLA BCS CONFIDENTIAL Page 21 of 34...

  • Page 22: The Downstream Modulation Characteristics Page

    SB5101 Cable Modem Overview 8.4 The Downstream Modulation Characteristics Page This page shows the physical characteristics of the downstream link and in particular the signal to noise ration and whether any FEC errors have been detected. MOTOROLA BCS CONFIDENTIAL Page 22 of 34...

  • Page 23: The Downstream Connection Page

    SB5101 Cable Modem Overview 8.5 The Downstream Connection Page This page displays IP specific information about the downstream connection it shows which client CPE addresses have been learned and also any packet errors that have occurred. MOTOROLA BCS CONFIDENTIAL Page 23 of 34...

  • Page 24: The Upstream Modulation Characteristics Page

    SB5101 Cable Modem Overview 8.6 The Upstream Modulation Characteristics Page. This page contains important physical information about the performance of the upstream link. In particular it shows the Power Level and whether or not the modem has retuned, both good indicators of link integrity.

  • Page 25: The Channel Parameters Page

    SB5101 Cable Modem Overview 8.7 The Channel Parameters Page This page allows certain parameters to be set on the modem if that facility has been allowed. One possibility may be to lock the modem to different frequency plan when moving between networks for diagnostic purposes.

  • Page 26: The Log Page

    SB5101 Cable Modem Overview The Log Page This page is dynamic and new logs are added at the bottom of the screen in the style of a standard scrolling window. This log shows the final stages of a successful connection sequence.

  • Page 27: Modem Profiler - Beachcomber

    SB5101 Cable Modem Overview 9 Modem Profiler - Beachcomber Beachcomber is a DOCSIS 1.0/1/1/2.0 Cable Modem Configuration file editor which runs on Windows, Linux and Unix based systems. It features a simple Java based user interface which includes checking of data fields as they are entered. It is a tool designed to make life easier for both the experienced operator by automating the configuration process and for the less experienced operator by providing extensive help facilities.
  • Page 28 SB5101 Cable Modem Overview One aspect of configuration management which needs to be managed carefully is the use of Filters and Access lists. These tables are used by the operator to determine what services their customers and use and more importantly to block activities which the operator does not want to allow.
  • Page 29 SB5101 Cable Modem Overview DOCSIS 1.1 introduced the idea of Service Flows with individual QoS levels so that an operator can distinguish between the QoS requirements of different types of end user service and allocate the resources required to ensure the customer actually receives the service they are paying for.

  • Page 30: Diagnostic Modem

    SB5101 Cable Modem Overview 10 Diagnostic Modem The diagnostic modem is physically the same as a customer modem except that it is orange in colour, it has a small jack socket on the rear and it has a special “shelled” version of the microcode.
  • Page 31 SB5101 Cable Modem Overview 10.1.1 Connecting to the Cable Modem via Diagnostic Console Cable: The CLI can be accessed via the Diagnostic Console Cable and the DIAG port on the back of the modem. This is typically done via “Windows HyperTerminal” with the following settings: •...
  • Page 32 SB5101 Cable Modem Overview Displays VxWorks host name table hosts Displays a summary of each task and associated TCB (Task Control Block) Display information about all attached network interfaces ifconfig Displays information about specific interface ifconfig [interface] Displays IP filter cache information...
  • Page 33 SB5101 Cable Modem Overview IF 1, Registration Req/Res values are displayed Reg Debug On IF 1, Then each frequency tested will be printed scan Scan Debug On IF 1, MMT Debug statements are displayed MMT Cmd Debug On IF 1, Ranging Debug statements are displayed...

  • Page 34: Reference Material

    SB5101 Cable Modem Overview 11 Reference Material Motorola has shipped over 20 million modems since 1996 and has monitored the actual in service failure rate over that time. The results are summarised below: • SB2100 – After 12 months and more than 93k units shipped, the SB2100 has an AFFR of <.97%, and an actual MTBF of 95 years...

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