Symmetricom TimeCreator 1000 User Manual

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Page 1

TimeCreator 1000

DOCSIS Timing Interface Server

User’s Guide

Revision C – February 2010

Part Number 097-93100-01

Page 2

Symmetricom, Inc.

2300 Orchard Parkway

San Jose, CA 95131-1017

U.S.A.

http://www.symmetricom.com

All product names, service marks, trademarks, and registered trademarks

used in this document are the property of their respective owners.

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Contents

How to Use This Guide

Purpose of This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Who Should Read This Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Structure of This Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Conventions Used in This Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Warnings, Cautions, Recommendations, and Notes . . . . . . . . . . . . . . . . . . . .19

Related Documents and Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Where to Find Answers to Product and Document Questions . . . . . . . . . . . . .20

What’s New In This Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Chapter 1 Overview of the TimeCreator 1000

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Shelf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Input Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Output Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Communications Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Clock Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Performance Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Server Status Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Phase Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

MTIE Calculations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Physical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

IOC Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

IMC Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Power Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Rear Panel Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Communication Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Local Craft Serial Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Management Ethernet Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

NTP Server Ethernet Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Reference Inputs and TOD Sources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

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Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Chapter 2 Engineering and Ordering Procedures

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

TimeCreator 1000 Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

System Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Two-Way GPS Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Common Configuration Parts Lists. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

User-Supplied Tools and Materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Chapter 3 Installing the TimeCreator 1000

Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Site Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Installation Tools and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Unpacking the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Rack Mounting the Shelf. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

Working With Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Handling Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Inserting Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Removing Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Making Signal Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

Making Communications Connections . . . . . . . . . . . . . . . . . . . . . . . . . . .53

GPS Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Input and Output Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Making Ground and Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Ground Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Power Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Installation Check List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Applying Power to the TimeCreator 1000. . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Normal Power Up Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Chapter 4 General Guidelines for using the Symmetricom TimeCreator 1000

Clock Operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

GPS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

NTP Client Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

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DHCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

CLI commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

Logging In And Out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

Adding And Deleting Users. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

Saving The Present Configuration To Non-volatile Memory. . . . . . . . . . .66

Restoring Default Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

Determining Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

Enabling Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Setting The Output To Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Configuring For Default Mode (Real Time Clock). . . . . . . . . . . . . . . . . . .67

Configuring For User Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Configuring For GPS Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Configuring For NTP Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

Configuring For Subtending Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

Forcing Unit To Send New Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

Setting Manual Cable Advance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

Setting Auto Cable Advance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

Configuring Static IP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

Configuring Dynamic IP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

Switching Active And Standby Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

Chapter 5 Provisioning

Establishing a Connection to the TimeCreator 1000. . . . . . . . . . . . . . . . . . . . .72

Communicating Through the Serial Port. . . . . . . . . . . . . . . . . . . . . . . . . .72

Communicating Through the Ethernet Port . . . . . . . . . . . . . . . . . . . . . . .72

Managing the User Access List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

Adding a User. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

Deleting A User. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Displaying Current Users and User Access Levels . . . . . . . . . . . . . . . . .76

Displaying Logged in Users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Changing a User’s Password and Access Level . . . . . . . . . . . . . . . . . . .77

Managing the IP Address Whitelist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

Add an IP Address to the Whitelist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

Delete an IP Address From the Whitelist . . . . . . . . . . . . . . . . . . . . . . . . .79

Set the Whitelist to Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

Provisioning Login Authentication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

Provisioning the TC1000 for Login Authentication . . . . . . . . . . . . . . . . . .79

Configuring the RADIUS Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

Configuring the TACACS+ Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

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Provisioning Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

Provisioning the Ethernet Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

Static IP Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

DHCP Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

Setting the System Date, Time and Time Offset. . . . . . . . . . . . . . . . . . . . . . . .85

Setting the DTI Server Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86

Root DTI Server in Free-run Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87

Root DTI Server in GPS Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

Subtending DTI Server Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88

Provisioning the Input Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

Setting the GPS Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

Setting the DTI Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

Setting the NTP Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

Force System Time to Reference (Jam Sync) . . . . . . . . . . . . . . . . . . . . .91

Provisioning the DTI Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Enabling and Disabling the DTI Server Links . . . . . . . . . . . . . . . . . . . . . .92

Enabling and Disabling the DTI Client/Server Links . . . . . . . . . . . . . . . . .92

Enabling DTI Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

Provisioning Revertive and Non-Revertive Mode . . . . . . . . . . . . . . . . . . . . . . .94

Provisioning Root Server Recovery Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . .95

Benefit of Using Root Server Recovery . . . . . . . . . . . . . . . . . . . . . . . . . .95

Root Server Recovery vs. Root Recovery . . . . . . . . . . . . . . . . . . . . . . . .95

Requirements for Root Server Recovery . . . . . . . . . . . . . . . . . . . . . . . .100

Duration of Root Server Recovery Process . . . . . . . . . . . . . . . . . . . . . .100

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100

Enabling Root Server Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101

Displaying Configuration of Root Server Recovery. . . . . . . . . . . . . . . . .101

Displaying Status of Root Server Recovery . . . . . . . . . . . . . . . . . . . . . .101

Aborting Root Server Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102

Provisioning SNMP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

Provisioning an NTP Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104

Provisioning Cable Advance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

Provisioning Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105

Provisioning the Set and Clear Alarm Thresholds . . . . . . . . . . . . . . . . .106

Provisioning the Alarm-States. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

Retrieving Current Alarm Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

Retrieving Current Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

Displaying System Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

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Routine Operation Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

Displaying Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

Displaying Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

Restarting TimeCreator 1000’s IMC Card. . . . . . . . . . . . . . . . . . . . . . . .110

Saving and Restoring Provisioning Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

Backing up Provisioning Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

Restoring Provisioning Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111

Chapter 6 Maintenance and Troubleshooting

Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116

Safety Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116

ESD Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116

Diagnosing the IOC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117

Reading LED Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117

Removing the IOC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117

Replacing the IOC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120

Diagnosing the IMC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121

Reading LED Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121

Replacing the IMC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122

Repairing the TimeCreator 1000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122

Obtaining Technical Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123

Upgrading the Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123

Upgrading the IOC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123

Upgrading the IMC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125

Returning the TimeCreator 1000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126

Repacking the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126

Equipment Return Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126

User’s Guide Updates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127

Appendix A Alarms, Events and SNMP Traps

Alarm Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130

Event Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138

SNMP Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .148

SNMP Alarm Traps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150

SNMP Event Traps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .158

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Appendix B Command Descriptions and Communications Interface

CLI Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .176

General Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .176

Command User Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177

CLI Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .178

Simple Network Management Protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .268

SNMP Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .269

SNMPv3 Security Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .269

Management Information Base. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .269

SNMP Users and Manager Addresses. . . . . . . . . . . . . . . . . . . . . . . . . .269

Network Time Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .271

Server Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .272

Client Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .272

Secure Shell Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .272

Secure File Transfer Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .272

Appendix C Installing the Two-Way GPS Antenna

Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .274

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .274

Making GPS Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .275

Installing the GPS Antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .275

Appendix D Specifications and Factory Defaults

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .284

Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .284

Environmental. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .284

Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .285

Serial Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .285

LAN Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .286

Input Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .286

Output Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .286

Roof Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .287

Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .287

Alarm Default Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .290

8 TimeCreator 1000 User’s Guide 097-93100-01 Revision C – February, 2010

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Table of Contents

Appendix E Software Licenses

Third-Party Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .292

Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .295

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Table of Contents

10 TimeCreator 1000 User’s Guide 097-93100-01 Revision C – February, 2010

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Figures

1-1 DTI Server Hierarchy and M-CMTS Elements. . . . . . . . . . . . . . . . . . . . . . .24

1-2 TimeCreator 1000 Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

1-3 TimeCreator 1000 Rear View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

1-4 TimeCreator 1000 Modules and DTI Links . . . . . . . . . . . . . . . . . . . . . . . . .31

1-5 TimeCreator 1000 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

1-6 IMC Module Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

1-7 IOC Module Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

3-1 Installing the TimeCreator 1000. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

3-2 IMC Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

3-3 Serial Port Connector Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

3-4 Rear Panel DTI Links. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

3-5 TimeCreator 1000 DC Power Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

3-6 TimeCreator 1000 AC Power Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

5-1 State Diagram for Root Server Recovery - USER mode. . . . . . . . . . . . . . .97

5-2 Simple Deployment with Root Server Recovery . . . . . . . . . . . . . . . . . . . . .98

5-3 Large Scale Deployment with Root Server Recovery . . . . . . . . . . . . . . . . .98

5-4 State Diagram for Root Recovery - GPS, NTP, and RTC modes . . . . . . . .99

A-1 SNMP MIB - Event Table Entries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149

A-2 SNMP MIB - Trap Object Parameters and Event Log Entries. . . . . . . . . .149

A-3 SNMP MIB - Trap Object Binding Example. . . . . . . . . . . . . . . . . . . . . . . .150

B-1 TimeCreator 1000 CLI Command Set. . . . . . . . . . . . . . . . . . . . . . . . . . . .176

C-1 Locating the GPS Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .275

C-2 Antenna-to-Device Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .277

C-3 Installing the Antenna Bracket on a Pipe. . . . . . . . . . . . . . . . . . . . . . . . . .278

C-4 Installing the Antenna Bracket on a Post. . . . . . . . . . . . . . . . . . . . . . . . . .278

C-5 Attaching the Antenna to the Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . .279

C-6 Assembling the Lightning Suppressor. . . . . . . . . . . . . . . . . . . . . . . . . . . .280

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List of Figures

12 TimeCreator 1000 User’s Guide 097-93100-01 Revision C – February, 2010

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Tables

1-1 TimeCreator 1000 Input Signal Source . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

2-1 Common Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

2-2 AC Power Cord Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

2-3 Component Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

2-4 GPS Parts and Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

2-5 TimeCreator 1000 No Redundancy - NA AC Power - P/N 990-93101-01 . .41

2-6 TimeCreator 1000 - NA AC Power - P/N 990-93105-01 . . . . . . . . . . . . . . .41

2-7 TimeCreator 1000 - NA AC Power & Rdnt Clk, 8port - P/N 990-93105-02 .41

2-9 TimeCreator 1000 - NA AC Power - P/N 990-93107-01 . . . . . . . . . . . . . . .42

2-8 TimeCreator 1000 - DC Power - P/N 990-93106-01 . . . . . . . . . . . . . . . . . .42

2-10 TimeCreator 1000 - DC power - P/N 990-93108-01 . . . . . . . . . . . . . . . . . .43

2-11 TimeCreator 1000 - NA AC Power - P/N 990-93109-01 . . . . . . . . . . . . . . .43

2-12 TimeCreator 1000 - DC power - P/N 990-93110-01. . . . . . . . . . . . . . . . . . .44

2-13 GPS Antenna Kit - P/N 990-93500-01. . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

2-14 NTP option - P/N 990-93200-01 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

3-1 Management and NTP Server Ethernet Connector Pin Assignments. . . . .54

3-2 Serial Port Connector Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . .54

3-3 DTI and Root DTI Connector Pin Assignments . . . . . . . . . . . . . . . . . . . . . .56

3-4 Installation Completeness Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

3-5 Module LED Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

4-1 TOD Source Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

5-1 User Level and Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

5-2 Security Levels vs. RADIUS Server Class Attribute Settings . . . . . . . . . . .80

5-3 Security Levels vs. RADIUS Server Class Attribute Settings . . . . . . . . . . .82

5-4 TimeCreator 1000 Input Signal Source . . . . . . . . . . . . . . . . . . . . . . . . . . . .86

5-5 DTI Link LED Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

5-6 Recovery Modes Based on TOD Source. . . . . . . . . . . . . . . . . . . . . . . . . . .96

5-7 TimeCreator 1000 Alarm Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

6-1 Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116

6-2 LED Conditions for the IOC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117

6-3 LED Conditions for the IMC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121

A-1 Identification Parameters for Alarms, Events and Traps . . . . . . . . . . . . . .130

A-2 System Notification Messages - Alarms . . . . . . . . . . . . . . . . . . . . . . . . . .131

A-3 System Notification Messages - Events. . . . . . . . . . . . . . . . . . . . . . . . . . .138

A-4 MIB Var Bindings for Symmetricom- specific Traps. . . . . . . . . . . . . . . . . .148

A-5 TimeCreator 1000 Alarm Trap Details . . . . . . . . . . . . . . . . . . . . . . . . . . . .150

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List of Tables

A-6 TimeCreator 1000 Alarm Traps - Additional Details. . . . . . . . . . . . . . . . . .152

A-7 Standard SNMP Traps Supported by TC1000. . . . . . . . . . . . . . . . . . . . . .158

A-8 TimeCreator 1000 Event Trap Details . . . . . . . . . . . . . . . . . . . . . . . . . . . .158

A-9 TimeCreator Events Traps - Additional Details . . . . . . . . . . . . . . . . . . . . .162

B-1 TimeCreator 1000 Alarm Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180

B-2 Time Zone Offsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .194

C-1 GPS Parts and Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .274

D-1 TimeCreator 1000 Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . .284

D-2 TimeCreator 1000 Environmental Specifications. . . . . . . . . . . . . . . . . . . .284

D-3 TimeCreator 1000 Power Specifications . . . . . . . . . . . . . . . . . . . . . . . . . .285

D-4 Serial Port Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .285

D-5 LAN Port Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .286

D-6 Input Signal Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .286

D-7 Output Signal Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .286

D-8 Antenna Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .287

D-9 GPS and DTI Port Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .287

D-10 IMC and Communication Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . .288

D-11 GPS and DTI Port Alarm Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . .290

14 TimeCreator 1000 User’s Guide 097-93100-01 Revision C – February, 2010

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How to Use This Guide

This section describes the format, layout, and purpose of this guide.

In This Preface

 Purpose of This Guide  Who Should Read This Guide  Structure of This Guide  Conventions Used in This Guide  Warnings, Cautions, Recommendations, and Notes  Related Documents and Information  Where to Find Answers to Product and Document Questions  What’s New In This Guide

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How to Use This Guide Purpose of This Guide

Purpose of This Guide

The TimeCreator 1000 User’s Guide describes the procedures for unpacking, installing, using, maintaining, and troubleshooting the Symmetricom TimeCreator 1000 DOCSIS Timing Interface Server (TimeCreator 1000). It also includes appendixes that describe alarms and events, the languages that you use to communicate with the TimeCreator 1000, default values, and other information.

Who Should Read This Guide

Chapter 1, Overview of the TimeCreator 1000, is written for non-technical

audiences who need general information about the product. Chapter 2, Engineering

and Ordering Procedures, and subsequent chapters contain technical information

about the product. Other chapters and appendixes describe installation, maintenance, and configuration instructions or details primarily intended for qualified maintenance personnel.

This User’s Guide is designed for the following categories of users:

 Systems Engineers – Chapter 1 provides an introduction to the TimeCreator

1000, Cross-references in this chapter direct you to detailed system information in other chapters as appropriate.

 Installation Engineers – Chapter 2 through Chapter 6 and the appendixes

provide detailed information and procedures to ensure proper installation, operation, and configuration of the TimeCreator 1000.

 Maintenance Engineers – Chapter 6 and the appendixes provide preventive

and corrective maintenance guidelines, as well as procedures for diagnosing and troubleshooting fault indications and alarms.

While Chapter 1 is written for non-technical audiences who need information about the TimeCreator 1000 system, others, such as Chapter 2 through Chapter 6 contain detailed information and instructions which are intended to be performed by qualified personnel only.

16 TimeCreator 1000 User’s Guide 097-93100-01 Revision C – February, 2010

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Structure of This Guide

This guide contains the following sections and appendixes:

Chapter, Title Description

How to Use This Guide Structure of This Guide

Chapter 1, Overview of the TimeCreator 1000

Chapter 2, Engineering and Ordering Procedures

Chapter 3, Installing the TimeCreator 1000

Chapter 4, General Guidelines for using the Symmetricom TimeCreator 1000

Chapter 5, Provisioning Describes the commands and procedures required to provision the

Chapter 6, Maintenance and Troubleshooting

Appendix A, Alarms, Events and SNMP Traps

Appendix B, Command Descriptions and Communications Interface

Appendix C, Installing the Two-Way GPS Antenna

Provides an overview of the product, describes the major hardware and software features, and list s the system specifications.

Lists the part number and ordering procedure for all TimeCreator 1000 parts and accessories.

Contains procedures for unpacking and installing the system, and for powering up the unit.

Provides basic information to which users can refer to ensure proper system operation.

TimeCreator 1000 after installing the unit. Contains preventive and corrective maintenance, and

troubleshooting procedures for the product. Lists the alarms and events and provides basic indications of the

source of the alarm. Describes the CLI command conventions, functions, and features

and the SNMP, NTP, SSH, and SFTP protocols.

Provides procedures for installing a GPS antenna and connecting it to the TimeCreator 1000.

Appendix D, Specifications and Factory Defaults

Appendix E, Software Licenses Index Provides references to individual topics within this gu ide.

097-93100-01 Revision C – February, 2010 TimeCreator 1000 User’s Guide 17

Lists the specifications for the TimeCreator 1000.

Contains licensing information for third party software.

Page 18

How to Use This Guide Conventions Used in This Guide

Conventions Used in This Guide

This guide uses the following conventions:

 Acronyms and Abbreviations – Terms are spelled out the first time they appear

in text. Thereafter, only the acronym or abbreviation is used.

 Revision Control – The title page lists the printing date and versions of the

product this guide describes.

 Typographical Conventions – This guide uses the typographical conventions

described in the table below.

When text appears

this way...

TimeCreator 1000 User’s

The title of a document.

... it means:

Guide CRITICAL An operating mode, alarm state, status, or chassis label. Select File, Open... Click the Open option on the File menu. Press Enter

Press;

A named keyboard key. The key name is shown as it appears on the keyboard. An explanation of the key’s acronym or function immediately follows the first reference to the key, if required.

Username: Text in a source file or a system prompt or other text that

appears on a screen.

ping status

A command you enter at a system prompt or text you enter in response to a program prompt. You must enter commands for case-sensitiv e operating systems exactly

as shown. qualified personnel A word or term being emphasized. Symmetricom does not

A word or term given special emphasis. recommend...

18 TimeCreator 1000 User’s Guide 097-93100-01 Revision C – February, 2010

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Warnings, Cautions, Recommendations, and Notes

How to Use This Guide

Warnings, Cautions, Recommendations, and Notes

Warnings, Cautions, Recommendations, and Notes attract attention to essential or critical information in this guide. The types of information included in each are explained in the following examples.

Warning: To avoid serious personal injury or death, do not disregard warnings. All warnings use this symbol. Warnings are installation, operation, or maintenance procedures, practices, or statements, that if not strictly observed, may result in serious personal injury or even death.

Caution: To avoid personal injury, do not disregard cautions. All cautions use this symbol. Cautions are installation, operation, or maintenance procedures, practices, conditions, or statements, that if not strictly observed, may result in damage to, or destruction of, the equipment. Cautions are also used to indicate a long-term health hazard.

ESD Caution: To avoid personal injury and electrostatic discharge (ESD) damage to equipment, do not disregar d ESD cautions. All ESD cautions use this symbol. ESD cautions are installation, operation, or maintenance procedures, practices, conditions, or statements that if not strictly observed, may result in possible personal injury, electrostatic discharge damage to, or destruction of, static-sensitive components of the equipment.

Electrical Shock Caution: To avoid electrical shock and possible personal injury, do not disregard electrical shock cautions. All electrical shock cautions use this symbol. Electrical shock cautions are practices, procedures, or statements, that if not strictly observed, may result in possible personal injury, electrical shock damage to, or destruction of components of the equipment.

Recommendation: All recommendations use this symbol. Recommendations indicate manufacturer-tested methods or known functionality. Recommendations contain installation, operation, or maintenance procedures, practices, conditions, or statements, that provide important information for optimum performance results.

Note: All notes use this symbol. Notes contain installation, opera tion, or maintenance procedures, practices, conditions, or statements, that alert you to important information, which may make your task easier or increase your understanding.

097-93100-01 Revision C – February, 2010 TimeCreator 1000 User’s Guide 19

Page 20

How to Use This Guide Related Documents and Information

Where to Find Answers to Product and Document Questions

For additional information about the products described in this guide, please cont act your Symmetricom representative or your local sales office. You can also contact us on the web at www.symmetricom.com.

What’s New In This Guide

Added “Managing the IP Address Whitelist” section to Chapter 5. Added “Provisioning Root Server Recovery Modes” section to Chapter 5. Modified commands in Appendix B:

 Set Authentication radius radiusserveraddress:port  Set Configuration restoreuser IMC  Set Configuration restoreuser IOC  Show Logged-in-user  Set Recvconfig IMC user@host:file  Set Recvconfig IOC user@host:file  Set Remote-syslog  Show Remote-syslog  Show Root-recovery status  Show Root-recovery config  Set Root-recovery autorecoverymode  Set Root-recovery rapidrecovery

20 TimeCreator 1000 User’s Guide 097-93100-01 Revision C – February, 2010

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 Set Sendconfig IMC user@host:file  Set Sendconfig IOC user@host:file  Show SNMP accessv2  Set SNMP accessv2  Set SNMP accessv2 Rocommunity  Set SNMP accessv2 Rwcommunity  Show SNMP accessv3  Set SNMP accessv3  Show Whitelist  Set Whitelist

Deleted CLI commands in Appendix B:

 History  Clear log

How to Use This Guide

What’s New In This Guide

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How to Use This Guide What’s New In This Guide

22 TimeCreator 1000 User’s Guide 097-93100-01 Revision C – February, 2010

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Chapter 1 Overview of the TimeCreator 1000

This chapter provides introductory information for the TimeCreator 1000.

In This Chapter

 Overview  Performance Monitoring  Physical Description  Functional Description  Communication Ports  Outputs  Reference Inputs and TOD Sources  Alarms

097-93100-01 Revision C – February, 2010 TimeCreator 1000 User’s Guide 23

Page 24

Chapter 1 Overview of the TimeCreator 1000 Overview

Overview

The TimeCreator 1000, shown in Figure 1-2, is a DOCSIS Timing Interface (DTI) Server that delivers accurate timestamp and frequency synchronization, and with GPS it can also provide Time of Day (TOD) to DTI client elements in a Modular Cable Modem Termination System (M-CMTS) architecture. M-CMTS elements shown in Figure 1-1 (Edge QAMs, Upstream Receivers, M-CMTS Core, etc.) use DTI to synchronize the DOCSIS Timestamp and Symbol Clock used in the DOCSIS communications between modems and the headend/hub. The TimeCreator 1000 functions as either a root server or subtending server . The root server is at the top of a server hierarchy and is the source of traceable time and frequency for all subtending DTI servers and clients in a building. The subtending server receives its time and frequency reference through a direct connection to a root se rver’s DTI link connector; a subtending server cannot be referenced to another subtending server.

Figure 1-1. DTI Server Hierarchy and M-CMTS Elements

24 TimeCreator 1000 User’s Guide 097-93100-01 Revision C – February, 2010

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Chapter 1 Overview of the TimeCreator 1000

Overview

A TimeCreator 1000 in a root server configuration can use either its internal clock as the master frequency for the headend/hub meeting DOCSIS specifications, or it can be configured to use GPS. GPS is required for Business Services over DOCSIS (BSoD), which allows you to deliver T1, E1, and NxDSO emulation services. GPS is also required to implement Network Time Protocol (NTP) server mode, which allows common time between headends/hub and other applications. NTP, the user-specified time, and the IMC’s real-time clock (RTC) can also be used as a basis for the DOCSIS timestamp to provide system TOD for operation in free-run mode only.

The TimeCreator 1000 features include:

 10+2 DTI Ports

– 10 standard DTI Client Connections (6 for 8-port option) – 2 dual mode DTI Connections for use as a standard DTI Client Connection

or input from a Root DTI Server with Carrier-Class Performance

 Optional High Reliability Redundant Operation  SNMP and CLI management over SSH, Telnet and Craft port  DTI Client Health Monitoring  NTP Server Option  TOD and BSoD Support (requires GPS input)  Compact 1RU Design  AC and DC Power Options  Subtending of up to Twelve DTI Servers  DTI Server Configurable with Dual Path Protection and 24 Hour Holdover  Software Upgradeable

Figure 1-2. TimeCreator 1000 Front View

Figure 1-3. TimeCreator 1000 Rear View

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Chapter 1 Overview of the TimeCreator 1000 Overview

Shelf

The TimeCreator 1000 shelf requires a minimum of three plug-in modules to operate:

 Power Supply module  Input/Output/Clock (IOC) module  Information Management Card (IMC) module.

It is recommended that a second Power Supply module and IOC are added to the configuration for redundant operation. Since the TimeCreator 1000 provides the Master DOCSIS Clock and Timestamp for the entire Headend or Hub site, it is designed to provide high reliability through redundancy, although redundancy is not required. The flexibility of configuration and therefore cost enables various deployment scenarios for root, slave, and protected architectures.

Input Signals

The TimeCreator 1000 can use either GPS or DTI signals as external input references to acquire the system’s frequency, DTI timestamp, and TOD alignment. NTP and the user-specified time from the IMC’s real-time clock (RTC) can also provide system TOD with much less accuracy. See Table 1-1 for descriptions. Only GPS can provide a common timestamp across the network for a distributed M-CMTS deployment. It is suggested that all root TimeCreator 1000 servers be configured with GPS. Upgrading any DTI Server from a user time or NTP time to GPS for BSoD or distributed M-CMTS architectures will require resetting the DOCSIS Timestamp and thus re-range all cable modems. The GPS input conn ects to the TNC connector on the IMC and the DTI input from a root DTI Server connects to the rear panel port A and port B RJ-45 connectors (labeled A/11 and B/12). NTP runs on the IMC’s management Ethernet port.

Note: When ports A/11 and B/12 are provisioned as outputs, they are referenced as Ports 11 and 12.

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Chapter 1 Overview of the TimeCreator 1000

Table 1-1. TimeCreator 1000 Input Signal Source

Input Source Description

GPS GPS antenna used to acquire the system’s frequency, DTI

timestamp, and TOD.

DTI External DTI signals used as external input references to acquire the

system’s frequency, DTI timestamp, and TOD.

NTP NTP server used to acquire the TOD. Frequency is provided by IOC’s

clock in freerun mode.

Real-Time Clock Clock on IMC used to acquire the TOD. Frequency is provided by

IOC’s clock in freerun mode.

Overview

USER User manually enters TOD. Frequency is provided by IOC’s clock in

freerun mode.

DTI Input Priority Level

You can assign a priority level to each DTI input and the value determines which input is used as the system reference. The range is 1 to 5 and the lower the priority level, the higher the priority. Use the Set Interface Priority command to provision these parameters.

Setting the Input Reference Switching Mode

The DTI reference selection at ports A and B can be either revertive or non-revertive (see Provisioning Revertive and Non-Revertive Mode, on page 94). In the revertive mode, if an input used as the system reference is disqualified (for any reason), the reference switches to the next-highest input and reverts to the initial input when that input is re-qualified. In this mode, the reference switches two times: once when the disqualifying event occurs, and again when the initial input is re-qualified. In the non-revertive mode, the system reference switches to the next-highest input but does not revert to the initial input when the initial input is re-qualified. The system reference switches only once when the disqualifying event occurs. Revertive mode is used when the port priorities are different and non-revertive mode is used when the priorities are the same.

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Chapter 1 Overview of the TimeCreator 1000 Overview

Output Signals

The TimeCreator 1000 passes frequency and TOD output through rear panel DTI links. Ports 1 through 10 (12-port version) or Ports 1 through 6 (8-port option) are permanent output ports. Ports A/11 and B/12 can be provisioned as either outputs or inputs.

Note: When ports A/11 and B/12 are provisioned as inputs, they are referenced as ports A and B.

Communications Ports

The EIA-232 serial and Ethernet connections are located on the IMC. The EIA-232 serial and Ethernet connections allow you to provision the system from a terminal or computer running a terminal emulation application.

Local Craft Serial Port

The EIA-232 port supports local control; you can configure the TimeCreator 1000 with commands using a terminal or personal computer (PC) with terminal emulation software (see Communicating Through the Serial Port, on page 72). The connect or is located on the IMC. The Local port is configured as a DCE interface and the default specifications are as follows:

 8 data bits  1 stop bit  no parity  9600 baud rate (57600 is supported only in the IMC rev H version 1.00.13 or

below)

 Flow Control: None

Ethernet

An Ethernet connector provides connectivity to a local area network (LAN) and each port can be assigned a unique internet protocol (IP) address (see Communicating

Through the Ethernet Port, on page 72). Once the IP address is set and a

connection is made, you can access the TimeCreator 1000 on an intranet. The Ethernet port supports two simultaneous connections to port 23.

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Chapter 1 Overview of the TimeCreator 1000

Overview

Clock Design

The TimeCreator 1000 clock design inclu des a highly stable ovenized Quartz crystal to produce accurate synchronization outputs. In a dual-IOC configuration, the clock function is redundant to provide protection. Each IOC qualifies the input signal and filters jitter and wander noise elements that may exist. In the event that all input references are lost or disqualified, the unit goes into holdover mode with the oscillator providing the system reference.

The IOC meets Type III performance.

Operating Modes

The TimeCreator 1000 has the following operating modes:

 Warm-up – The period immediately following power-up that allows local

oscillator stabilization required for stable frequency generation from the system.

 Free-run – This operating mode allows the system to generate a DTI output that

has stable generation of frequency and TOD when the system has no external frequency reference (GPS or DTI). TOD can be from NTP, a user-specified time, or from the IMC’s real-time clock.

 Fast-Lock (Acquire) – In this mode the system quickly locks the local oscillator

frequency to another frequency source (GPS or DTI reference) to establish the system’s frequency and TOD.

 Normal (Locked) – In this operating mode, the system’s output frequency and

TOD are tracking the reference frequency (GPS or DTI) and TOD within the DTI specified requirements.

 Bridging – If all input references are lost, the TimeCreator 1000 goes into

bridging mode. In this mode, the outputs continue to provide accurate timing fo r a limited period. If the system qualifies the reference prior to the end of the bridging time, the system re-enters Fast-Lock or Normal operation mode. If the inputs are not re-qualified before the bridging time has elapsed, the TimeCreator 1000 enters holdover mode.

 Holdover – If the reference signal is lost and not re-qualified when the bridging

time elapses, the clock enters holdover mode. The accuracy of the TimeCreator 1000 output is then dependent on the quality level of the oscillator.

 Extended Holdover – If the clock remains in holdover for an extended duration,

typically 4 hours, the clock enters extended holdover mode.

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Chapter 1 Overview of the TimeCreator 1000 Performance Monitoring

 Frequency Mode – In this operating mode, the system's frequency is tracking

the reference frequency (GPS). In this mode, a user can add a GPS reference to the TimeCreator 1000 and use the frequency from GPS to meet BSoD specifications without re-setting the DOCSIS Timestamp and causing a re-ranging of the cable modems.

Note: In Frequency Mode, DTI output and IMC GPS are not in sync.

Performance Monitoring

Server Status Monitoring

DTI client status log files provide information on client status, oscillator type, and the server’s cable advance flag and cable advance value.

Phase Measurements

TheTimeCreator 1000 measures phase data. Peak to peak jitter and MTIE results are calculated for the user. Frame error rate (FER) is also calculated and made available to the user. It is calculated over a 10-second window.

MTIE Calculations

MTIE is a measure of the relative noisiness of a signal that relates to frequency offsets and phase transients. The TimeCreator 1000 automatically calculates MTIE for each enabled input from the most recent 1000 seconds. From this calculation, you can retrieve MTIE values for 35-second and user-configurable windows. You can set an alarm threshold for each of these windows; if the MTIE value exceeds this threshold and the alarm is enabled, the TimeCreator 1000 generates an alarm.

Physical Description

The TimeCreator 1000 consists of a 19-inch (48 cm) rack mount shelf, plug-in modules, AC power supply cables and optional GPS cables, and hardware.

Note: 23-inch (58.42 cm) rack mounting brackets are also available as a separately ordered item.

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Chapter 1 Overview of the TimeCreator 1000

Input/Output Clock (IOC) Information Management Card (IMC) Input/Output Clock (IOC)

AC Power Supply AC Power SupplyDTI Client Links

DTI Client/Server Links

Functional Description

The front of the TimeCreator 1000 has two IOC module slots and one IMC module slot. The rear has two power supply slots, twelve DTI link connectors and two BITS connectors (see Figure 1-4). The minimum configuration is one Power module, one IOC module, and an IMC module. The second IOC and Power module slots are available for redundancy.

Note: The BITS connectors are not functional in this release.

Figure 1-4. TimeCreator 1000 Modules and DTI Links

Functional Description

The TimeCreator 1000 accepts one GPS input and two DTI inputs for system reference and it allows you to provision the DTI input reference priority. When a GPS or DTI reference is qualified as the system reference, the server uses the qualified reference to acquire the system’s frequency, DTI timestamp, and TOD alignment.

The TimeCreator 1000 rear panel has ten DTI client links (six DTI client links for 8-port option) and two client/server links. Client links connect to an M-CMTS Core, Upstream receiver, Edge QAM, or DTI server. Server links allow a subtending server to receive time and frequency signals from a DTI root server. There are also two T1/E1 BITS frequency inputs.

Note: The BITS connectors are not functional in this release.

Figure 1-5 is a block diagram of the TimeCreator 1000, Figure 1-6 is a block

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diagram of the IMC card, and Figure 1-7 is a block diagram of the IOC card.

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Chapter 1 Overview of the TimeCreator 1000 Functional Description

Figure 1-5. TimeCreator 1000 Block Diagram

Figure 1-6. IMC Module Block Diagram

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Chapter 1 Overview of the TimeCreator 1000

Functional Description

Figure 1-7. IOC Module Block Diagram

IOC Module

The IOC module has LED status indicators and test outputs for the system. The LEDs indicate:

 Power Status  Active Status  Output Status  External Reference Status  Alarm Status  Holdover Status

The test output connectors provide a 10.24 MHz master clock signal and a 10 kHz DTI frame clock signal.

IMC Module

Connectors for Ethernet management, NTP time server, EIA-232 serial, and the Two-Way GPS Timing Antenna connections are located on the IMC module. The IMC’s LEDs indicate the following:

 Power Status  Alarm Status  GPS Signal Status

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Chapter 1 Overview of the TimeCreator 1000 Communication Ports

Power Module

The TimeCreator 1000 allows either –48 V DC power connection, or 120/220 V AC power connection depending on the type of module used. The LED indicates power status.

Rear Panel Connectors

The TimeCreator 1000 rear panel connections are RJ-45 conn ectors. There are ten permanent DTI client connectors and two DTI client/server connectors that can be provisioned as either client or server links. This allows the TimeCreator 1000 to support up to 12 DTI client links (8 DTI client links for 8-port option), or when provisioned as a subtending server to receive two time and frequency references. There are also two BITS connectors.

Each DTI link connection has associated LEDs that indicate connection status.

Note: The BITS connectors are not functional in this release.

Communication Ports

Communications ports on the IMC allow you to provision, monitor, and troubleshoot the shelf. You communicate with the TimeCreator 1000 using either CLI or SNMP protocols.

Local Craft Serial Port

The EIA-232 port supports local control; you can configure the TimeCreator 1000 with CLI commands using a terminal or personal computer (PC) with terminal emulation software (see Communicating Through the Serial Port, on page 72). The connector is located on the IMC. The Local port is configured as a DCE interface and the default settings are as follows:

 Baud = 9600 baud rate (57600 is supported only in the IMC rev H version 1.00.13

or below)

 Word Length = 8 bits  Parity = None  Stop bits = 1  Software Handshaking, Xon/Xoff

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Management Ethernet Port

The Management Ethernet connector provides connectivity to an Ethernet local area network. Each Ethernet port has a unique internet protocol (IP) address and once the IP address is set and a connection is made to a LAN, you can access the TimeCreator 1000 (see Communicating Through the Ethernet Port, on page 72).

NTP Server Ethernet Port

The NTP server port serves the TimeCreator 1000’s system time to external NTP clients. The NTP server option only works with a TOD-source of GPS. This Ethernet port is configured separately from the management port (see Provisioning an NTP

Server, on page 104). The NTP server option requires the purchase of a license.

Outputs

The DTI link connectors use a single pair for transmission in both directions. The server and client alternate data transmission therefore eliminating the need for a crossover connection. The DTI server output is a Manchester encoded frame with an underlying bit-rate of 5.12 Mbps locked to the DTI Master Clock. You can enable or disable each output individually through user commands (see the command Set

Interface, on page 213). The TimeCreator 1000 automatically calibrates each DTI

Output when a DTI Client is connected eliminating the need to manually compensate for cable lengths. The maximum cable length is 656 Ft. (200 m).

Chapter 1 Overview of the TimeCreator 1000

Outputs

The TimeCreator 1000 provides a 10.24 MHz master clock signal and a 10 kHz frame clock on the front panel.

Reference Inputs and TOD Sources

The TimeCreator 1000 can use either GPS or DTI signals as external input references to acquire the system’s frequency, DTI timestamp, and TOD alignment. The GPS reference signal input connects to a TNC connector on the IMC module and the DTI reference signal input is connected to RJ-45 connectors labeled A/11 and B/12 on the rear panel. The Set Interface Priority set priority levels for the two DTI reference signals (see the command Set Interface, on page 213).

Note: When ports A/11 and B/12 are provisioned as outputs, they are referenced as ports 11 and 12.

user command allows you to

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Chapter 1 Overview of the TimeCreator 1000 Alarms

NTP, the user-specified time, and the IMC’s real-time clock (RTC) provide system TOD for operation in free-run mode only, as shown in Table 1-1.The default settings provision the TimeCreator 1000 to operate in free-run mode only.

Note: The BITS input connectors are not functional in this release.

It is recommended that the root server in a DTI network with root and subtending servers be referenced to GPS. Using GPS allows the user to recover from root server outages with minimal cable modem re-ranging. The root server can be set to user mode and still provide protection from excessive re-ranging, but requires some additional network resources to enable an orderly network recovery from any major root outages. If, for example, a power outage affects the root server, it must have a way to recover the previous network time and phase when it returns to normal operation. To do this the TimeCreator has a 'Root-Server Recovery' function that re-synchronizes the root server to the rest of the network. To accomplish this there has to be a connection between the root server, port 12 and a subtending server port 1, with port 12 of the root server set as a Client, but not enabled. When the root server recovers power (or has been serviced) it will automatically query time from a subtending server so that it will not cause unnecessary cable modem re-ranging. See Provisioning Root Server Recovery Mode, on page 95 for details.

Alarms

The TimeCreator 1000 uses alarms to notify you when certain conditions are deteriorating below user-specified levels. These alarms are indicated by module status LEDs and by SNMP traps. You can provision the alarm to either be enabled or disabled and the current alarm state can be obtained via the communication ports. For more information, see Provisioning Alarms, on p age 105 and Appe ndix A,

Alarms, Events and SNMP Traps.

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Chapter 2 Engineering and Ordering Procedures

This chapter describes the items available for the TimeCreator 1000, and lists the part number for each item.

In This Chapter

 Overview  TimeCreator 1000 Part Numbers  User-Supplied Tools and Materials

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Chapter 2 Engineering and Ordering Procedures Overview

Overview

The TimeCreator 1000 can operat e in either a basic configuration, or in a redundant configuration in one shelf. Basic configuration consists of the following components:

 1 Shelf  1 IMC module  1 AC or DC power module  1 12-port or 8-port IOC module

Note: When operating in basic configuration, blank panels are

available to cover the vacant module slots in the shelf.

Redundant configuration consists of the following components:

 1 Shelf  1 IMC module  2 AC or DC power modules  2 12-port or 2 8-port IOC modules

TimeCreator 1000 Part Numbers

System Configurations

This section provides part numbers and descriptions for the various system configurations and parts available for the TimeCreator 1000. Table 2-1 provides a list of common configurations and Table 2-3 lists the shelf component and accessory part numbers.

Table 2-1. Common Configurations

System Configuration Part Number

TimeCreator 1000 No Redundancy With NA AC Power - see Table 2-5 990-93101-01 TimeCreator 1000 - NA AC Power (1 SH, 1 IMC, 2 IOC, 2 AC) - see Table 2-6 990-93105-01 TimeCreator 1000 - NA AC Power, 8port IOC (1 SH, 1 IMC, 2 IOC-8 port, 2 AC) -

990-93105-02

see Table 2-7

TimeCreator 1000 - DC Power (1 SH, 1 IMC, 2 IOC, 2 DC) - see Table 2-8 990-93106-01

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Table 2-1. Common Configurations (Continued)

System Configuration Part Number

Chapter 2 Engineering and Ordering Procedures

TimeCreator 1000 Part Numbers

TimeCreator 1000 - NA AC Power (1 SH, 1 IMC, 2 IOC, 2 AC, GPS) - see Table

990-93107-01

2-9

TimeCreator 1000 - DC power (1 SH, 1 IMC, 2 IOC, 2 DC, GPS) - see Table 2-10 990-93108-01 TimeCreator 1000 - NA AC Power (1 SH, 1 IMC, 2 IOC, 2 AC, GPS, NTP) - see

990-93109-01

Table 2-11

TimeCreator 1000 - DC power (1 SH, 1 IMC, 2 IOC, 2 DC, GPS, NTP) - see Table

990-93110-01

2-12

Configuration part numbers, as shown in Table 2-1, are of the form 990-xxxxx-0y. For AC configurations the y value in the part number corresponds to the power cord configuration. See Table 2-2. For example, the part number for a basic TimeCreator 1000 with no redundancy and a North American (NA) power cord is 990-93105-01. The part number for a basic T imeCreato r 1000 with no r edundancy and a Eu ropean (EU) power cord is 990-93105-02. With a United Kingdom (UK) power cord, the part number for a basic TimeCreator 1000 with no redundancy is 990-93105-00.

Table 2-2. AC Power Cord Options

Power Cord Options Designation y

North American NA 1 European EU 2 United Kingdom UK 0

Table 2-3. Component Part Numbers

Item Part Number

Shelf - (SH) 090-93100-01 IOC Module - 12 port 090-93121-01 IOC Module - 8 port 090-93121-02 IMC Module 090-93131-01 DC Power Module (DC) 090-93141-01 AC Power Module (AC) 090-93151-01

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Chapter 2 Engineering and Ordering Procedures

Note:

TimeCreator 1000 Part Numbers

Table 2-3. Component Part Numbers

Item Part Number

IOC Module Slot Blank Panel 090-93122-01 Power Module Slot Blank Panel 090-93142-01 TimeCreator 8 port to 12 port

990-93121-99

IOC Upgrade kit

Two-Way GPS Antenna

Table 2-4 lists the parts available for the GPS antenna.

Table 2-4. GPS Parts and Accessories

Part Number Description

990-93500-01

090-58545-01 Two Way GPS Antenna (spare) 043-00018-01 Lightning suppressor (spare) 060-58545-01 RG-58 cable, 3 m (10 ft.) 060-58545-02 RG-58 cable, 6 m (20 ft.) 060-58545-05 RG-58 cable, 15 m (50 ft.)

Two Way Antenna Kit

060-58545-10 RG-58 cable, 30 m (100 ft.) 060-58545-20 RG-58 cable, 60 m (200 ft.) 060-58545-30 RG-58 cable, 90 m (300 ft.) 060-58545-50 RG-58 cable, 150 m (500 ft.) 154-00023-01 Crimp tool for RG-58 cable 371-001 TNC connectors for RG-58 cable

Kit includes GPS antenna, mounting hardware, and lightning

suppressor. Order antenna cables separately

Common Configuration Parts Lists

The following tables list the items shipped with each common system configuration. In addition, Table 2-13 provides a list of items shipped with the GPS Antenna Kit, and Table 2-14 provides the NTP option license part number.

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Chapter 2 Engineering and Ordering Procedures

Table 2-5. TimeCreator 1000 No Redundancy - NA AC Power - P/N 990-93101-01

TimeCreator 1000 Part Numbers

Item Part Number Quantity

TimeCreator 1000 Shelf (SH) 090-93100-01 1 TimeCreator 1000 IOC card (IOC) 090-93121-01 1 TimeCreator 1000 IMC card (IMC) 090-93131-01 1 TimeCreator 1000 AC power card (AC) 090-93151-01 1 TimeCreator 1000 Blank Panel for power slot (BPP) 090-93142-01 1 TimeCreator 1000 Blank panel for IOC slot (BPI) 090-93122-01 1 NA AC power connector cable 160-00004-02 1 CD Manuals 998-93101-01 1

Table 2-6. TimeCreator 1000 - NA AC Power - P/N 990-93105-01

Item Part Number Quantity

Table 2-7. TimeCreator 1000 - NA AC Power & Rdnt Clk, 8port - P/N 990-93105-02

Item Part Number Quantity

TimeCreator 1000 Shelf (SH) 090-93100-01 1 TimeCreator 1000 IOC card (IOC), 8 port 090-93121-02 2 TimeCreator 1000 IMC card (IMC) 090-93131-01 1 TimeCreator 1000 AC power card (AC) 090-93151-01 2

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Chapter 2 Engineering and Ordering Procedures TimeCreator 1000 Part Numbers

Table 2-7. TimeCreator 1000 - NA AC Power & Rdnt Clk, 8port - P/N 990-93105-02

Item Part Number Quantity

NA AC power connector cable 160-00004-02 2 CD Manuals 998-93101-01 1

Table 2-8. TimeCreator 1000 - DC Power - P/N 990-93106-01

Item Part Number Quantity

Table 2-9. TimeCreator 1000 - NA AC Power - P/N 990-93107-01

Item Part Number Quantity

TimeCreator 1000 Shelf (SH) 090-93100-01 1 TimeCreator 1000 IOC card (IOC) 090-93121-01 2 TimeCreator 1000 IMC card (IMC) 090-93131-01 1 TimeCreator 1000 AC power card (AC) 090-93151-01 2 2-way Timing Antenna 090-58545-01 1 GPS/volute ant bracket kit 093-00001-01 1 TimeProvider/TimeCreator GPS hardware kit 093-58545-01 1 IF antenna mounting kit 093-72010-71 1 AC power connector cable 160-00004-02 2 CD Manuals 998-93101-01 1

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Chapter 2 Engineering and Ordering Procedures

Table 2-10. TimeCreator 1000 - DC power - P/N 990-93108-01

TimeCreator 1000 Part Numbers

Item Part Number Quantity

TimeCreator 1000 Shelf (SH) 090-93100-01 1 TimeCreator 1000 IOC card (IOC) 090-93121-01 2 TimeCreator 1000 IMC card (IMC) 090-93131-01 1 TimeCreator 1000 DC power card (DC) 090-93141-01 2 2-way Timing Antenna 090-58545-01 1 GPS/volute ant bracket kit 093-00001-01 1 TimeProvider/TimeCreator GPS hardware kit 093-58545-01 1 IF antenna mounting kit 093-72010-71 1 CD Manuals 998-93101-01 1

Table 2-11. TimeCreator 1000 - NA AC Power - P/N 990-93109-01

Item Part Number Quantity

TimeCreator 1000 Shelf (SH) 090-93100-01 1 TimeCreator 1000 IOC card (IOC) 090-93121-01 2 TimeCreator 1000 IMC card (IMC) 090-93131-01 1 TimeCreator 1000 AC power card (AC) 090-93151-01 2 License Certificate 920-93200-01 1 2-way Timing Antenna 090-58545-01 1 GPS/volute ant bracket kit 093-00001-01 1 TimeProvider/TimeCreator GPS hardware kit 093-58545-01 1 IF antenna mounting kit 093-72010-71 1 NA AC power connector cable 160-00004-02 2 CD Manuals 998-93101-01 1

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Chapter 2 Engineering and Ordering Procedures TimeCreator 1000 Part Numbers

Table 2-12. TimeCreator 1000 - DC power - P/N 990-93110-01

Item Part Number Quantity

TimeCreator 1000 Shelf (SH) 090-93100-01 1 TimeCreator 1000 IOC card (IOC) 090-93121-01 2 TimeCreator 1000 IMC card (IMC) 090-93131-01 1 TimeCreator 1000 DC power card (DC) 090-93141-01 2 License Certificate 920-93200-01 1 2-way Timing Antenna 090-58545-01 1 GPS/volute ant bracket kit 093-00001-01 1 TimeProvider/TimeCreator GPS hardware kit 093-58545-01 1 IF antenna mounting kit 093-72010-71 1 NA AC power connector cable 160-00004-02 2 CD Manuals 998-93101-01 1

Table 2-13. GPS Antenna Kit - P/N 990-93500-01

Item Part Number Quantity

2-way Timing Antenna 090-58545-01 1 GPS/volute ant bracket kit 093-00001-01 1 TimeProvider/TimeCreator GPS hardware kit 093-58545-01 1 IF antenna mounting kit 093-72010-71 1

Table 2-14. NTP option - P/N 990-93200-01

Item Part Number Quantity

License Certificate 920-93200-01 1

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User-Supplied Tools and Materials

You need to supply the following tools and materials for installing and testing the TimeCreator 1000.

 Phillips-head screwdriver to install the TimeCreator 1000 shelf in a rack  ESD wrist strap for installing modules  Digital multimeter (Fluke 77 or equivalent) for verifying power connections to the

shelf

 Laptop computer with communications software (e.g., Windows Hyperterminal,

ProComm Plus) for setting system parameters

These standard tools and materials are not supplied, but may be required for installing the GPS antenna and the Two-Way Antenna Interface:

 Standard tool kit  Fasteners for mounting the equipment in rack

Chapter 2 Engineering and Ordering Procedures

User-Supplied Tools and Materials

 PVC glue

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Chapter 2 Engineering and Ordering Procedures User-Supplied Tools and Materials

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Chapter 3 Installing the TimeCreator 1000

This chapter describes the procedures for installing the TimeCreator 1000.

In This Chapter

 Getting Started  Unpacking the Unit  Rack Mounting the Shelf  Working With Modules  Making Signal Connections  Making Ground and Power Connections  Installation Check List  Applying Power to the TimeCreator 1000

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Chapter 3 Installing the TimeCreator 1000 Getting Started

Getting Started

Before you begin to install the TimeCreator 1000, review the information in this section.

If you encounter any difficulties during the installation process, contact Symmetricom Global Services (SGS). See Obtaining Technical Assistance, on page 123 for telephone numbers. SGS includes Product Technical Support for technical information, and Customer Service for information about your order, RMAs, and other information.

Site Survey

Before you begin installation, determine the shelf location, ensure the appropriate power source is available (–48 V DC or 120/220 V AC depending on power module type), and ensure that the equipment rack is properly grounded.

The TimeCreator 1000 is designed to mount in a 19-inch (48 cm) rack, occupies

1.75 in (4.5 cm, 1 RU) of vertical rack space, and has a depth of 20 in (50.8 cm).

Note: 23-inch (58.42 cm) rack mounting brackets are also available as a separately ordered item.

Environmental Requirements

To prevent the unit from malfunctioning or interfering with other equipment, install and operate the unit according to the following guidelines:

 Operating temperature: 32Fto 104F (0 C to 40C)  Operating Humidity: 10% to 90% RH non-condensing  Use only shielded cable for all signal wiring, including I/O, clocks and Ethernet.

Ground appropriately at both ends, or as required by local standards.

Note: Continuing improvements to the design of the TimeCreator 1000 have lowered the level of emissions. UTP cable can be used for DTI links with TimeCreator 1000 chassis revisions E or greater (revision is on label on bottom of shelf). UTP cable can be used for Ethernet connections to IMCs of revision H or later.

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Chapter 3 Installing the TimeCreator 1000

 Secure all cable screws to their corresponding connectors.

Unpacking the Unit

Caution: To avoid interference, you must consider the electromagnetic compatibility (EMC) of nearby equipment when you install the TimeCreator 1000.

Electromagnetic interference can adversely affect the operation of nearby equipment.

Installation Tools and Equipment

You will need the following tools and equipment to install the TimeCreator 1000:

 Standard tool kit  Cable ties, waxed string or acceptable cable clamps  No. 18 AWG (minimum) wire at 300 volt insulation for –48 V DC  No. 12 AWG wire to connect grounding lug to permanent earth ground  Signal wiring (including DTI Links, GPS, and Ethernet) uses shielded cabling of

the appropriate impedance required by the specific signal type

 Mating connectors for terminating signal wiring  Fasteners for mounting the equipment in rack  Digital Voltmeter (DVM)

Unpacking the Unit

The TimeCreator 1000 is packaged to protect it from normal shock, vibration and handling damage.

Caution: To avoid electrostatic discharge (ESD) damage to parts that are packaged with the TimeCreator 1000, observe the following procedures.

Unpack and inspect the unit as follows:

1. Wear a properly grounded protective wrist strap or other ESD device.

2. Inspect the container for signs of damage. If the container appears to be damaged, notify both the carrier and your Symmetricom distributor. Retain the shipping container and packing material for the carrier to inspect.

3. Open the container, being careful to cut only the packaging tape.

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Chapter 3 Installing the TimeCreator 1000 Rack Mounting the Shelf

4. Locate and set aside the printed information and paperwork that is included in the container.

5. Remove the unit from the container and place it on an anti-static surface.

6. Locate and set aside small parts which may be packed in the container.

7. Remove the accessories from the container.

8. Remove the anti-static packaging from the unit and accessories.

9. Verify that t he model and item number shown on the shipping list agrees with the model and item number on the equipment. The item number can be found on a label affixed to the unit. Contact your Symmetricom distributor if the model or item number do not match.

For a complete listing of item numbers, contact your Symmetricom distributor.

Rack Mounting the Shelf

The installation procedure described in this section provides general guidelines for installing the TimeCreator 1000. Always follow applicable local electrical codes.

Use the following steps to mount the TimeCreator 1000 in a 19- or 23-inch (48 or

58.42 cm) rack.

Note: The TimeCreator 1000 comes equipped with 19-inch rack mounting brackets. 23-inch rack mounting brackets a re available as a separately ordered item.

1. If necessary , att ach the ra ck mounting bracket s to the shelf using 6-32 x 1/4-inch screws. Ensure that the

mounting brackets on both sides are attached at equal

distances from the front of the unit (see Figure 3-1).

2. Mount the shelf to the front of the equipment rack rails with four screws and associated hardware. Use the proper screws for the equipment rack.

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Chapter 3 Installing the TimeCreator 1000

Working With Modules

Figure 3-1. Installing the TimeCreator 1000

Working With Modules

This section describes how to install, remove, and handle the modules associated with the TimeCreator 1000.

Handling Modules

When handling any of the modules, observe the following precautions:

1. Use proper static control precautions when handling modules! Protect the equipment against ESD (electrostatic discharge) by using a grounded protective wrist strap and normal equipment grounding.

2. Avoid touching component leads and edge connectors.

3. Avoid placing the module on an ungrounded surface.

4. Avoid allowing the module to come in contact with insulated surfaces.

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Chapter 3 Installing the TimeCreator 1000 Working With Modules

Inserting Modules

This procedure is common for all modules.

Caution: You must disconnect power prior to removing the power module, but all other modules can be removed and inserted while system power is supplied without damaging modules; however, system performance may be affected.

Use the following procedure to insert a module into the shelf:

1. Align the module edges within the guides of the selected slot.

2. Slide the module into the chassis and press firmly until it seats fully into its backplane edge connector. Handles on each side of the faceplate are provided for removing and inserting the module.

3. Tighten the captive screws located on each side of the panel.

Caution: To avoid possible damage or intermittent failures, ensure that you have completely inserted the module into the chassis and that you have securely tightened the captive screws.

Note: A Phillips screw driver is required to tighten or loosen the power supply module fasteners.

Removing Modules

Caution: You must disconnect power prior to removing the power supply module.

Caution: You must disconnect the GPS antenna before removing the IMC module or removing ground connection.

To remove a module, loosen the captive screws and then pull out on the handles located on each side of the module. Be sure to place the module on a static-free surface.

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Making Signal Connections

The connectors for the GPS input signal, Management and NTP Server Ethernet connections, and EIA-232 serial connection are located on the IMC module. The rear panel has RJ-45 connectors for ten client DTI links, two DTI client/server links, and two T1/E1 BITS frequency links.

Note: The T1/E1 BITS links do not function in this release.

Making Communications Connections

The IMC allows user control of the TimeCreator 1000. The EIA-232 serial port, Ethernet Management port, and NTP server port are located on the IMC as shown in Figure 3-2. See Working With Modules, on page 51 for module installation instructions.

Chapter 3 Installing the TimeCreator 1000

Making Signal Connections

Figure 3-2. IMC Module

Ethernet Management and NTP Server Ports

The Ethernet Management and NTP server ports are standard 10Base-T/100Base-T shielded RJ-45 receptacles. To connect the TimeCreator 1000 to an Ethernet network, and to connect the NTP server to an NTP client, use shielded twisted pair Ethernet RJ-45 cable.

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Chapter 3 Installing the TimeCreator 1000 Making Signal Connections

The connector pinouts are listed in Table 3-1.

Table 3-1. Management and NTP Server Ethernet Connector Pin Assignments

Signal Name Pin

TX+ (Transmit positive) 1 TX- (Transmit negative) 2 RX- (Receive negative) 3 RX+ (Receive positive) 6 Not Used 4, 5, 7, 8

EIA-232 Serial (Craft) Port

The EIA-232 serial port connection is made through a DE9S female connector on the IMC. This port allow you to connect to a terminal or PC using a terminal emulation software package for remote monitoring and con trol. When connecting to this port, use a shielded EIA-232 direct connect cable with the cable shield connected to pin 1.

Figure 3-3 shows the EIA-232 connector pin assignments for the serial port.

Figure 3-3. Serial Port Connector Pins

Table 3-2 describes the EIA-232 connector pin assignments for the serial port.

Table 3-2. Serial Port Connector Pin Assignments

Signal Pin

TXD (Received Data) 2 RXD (Transmitted Data) 3 Ground 5

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Chapter 3 Installing the TimeCreator 1000

Making Signal Connections

GPS Connections

The TimeCreator 1000 GPS input TNC connector is located on the IMC. To connect a GPS signal, you must install a GPS antenna. For detailed insta llation instructions, see Appendix C, Installing the Two-Way GPS Antenna. In addition to the installation instructions, this appendix also provides a list of the standard tools you will need and a list of available parts. See Working With Modules, on page 51 for module installation instructions.

Caution: The GPS cable should only be connected while the unit is properly grounded.

Input and Output Connections

The DTI link and BITS connections are RJ-45 connectors located on the rear panel (see Figure 3-4).

Note: The BITS connectors are not functional in this release.

Note: Guidelines for deploying the TimeCre ator 1000 are available in

the application note titled “Deploying Reliable DOCSIS Synchronization. Visit Symmetricom ’s we bsite at the following URL to access this application note.

http://www.symmetricom.com/resources/downloads/application

-notes

DTI Connectors

The DTI server and client connections are shielded RJ-45 receptacles on the rear panel and they are standard 10Base-T/100Base-T connectors. The client connectors are ports 1 through 10 and additionally ports 11 and 12 if these two ports are provisioned as outputs. The server connectors are ports A and B if these two ports are provisioned as inputs.

To connect a TimeCreator 1000 server output to M-CMTS components, install a shielded twisted pair RJ-45 cable, CAT5E or better, between the M-CMTS components and the rear panel DTI server output conne ctor (port 1-10 or port 11 or 12 if optioned as a server port).

Note: Continuing improvements to the design of the Ti meCreator 1000 have lowered the level of emissions. UTP cable can be used for DTI links with TimeCreator 1000 chassis revisions E or greater (revision is on label on bottom of shelf).

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Chapter 3 Installing the TimeCreator 1000 Making Signal Connections

To connect a TimeCreator 1000 root server to a subtending server , install a shielded twisted pair RJ-45 cable, CAT5E or better, from the root server's rear panel DTI connector to the subtending server's client input port (port A or port B, when optioned as 'client').

Note: Continuing improvements to the design of the Ti meCreator 1000 have lowered the level of emissions. UTP cable can be used for DTI links with TimeCreator 1000 chassis revisions E or greater (revision is on label on bottom of shelf).

If the root server in a DTI network with subtending servers is set to user mode to utilize root server recovery, a connection should be made from the root server port 12 to a subtending server port 1. This enables root server recovery, in an orderly manner, from any outages affecting the root server

The connector pinouts are listed in Table 3-3.

Table 3-3. DTI and Root DTI Connector Pin Assignments

Signal Name Pin

SIG+ (Positive Side of Transmitted/Received Data) 1 SIG– (Negative Side of Transmitt ed /Re cei ved Da t a ) 2 Not Used 3, 4, 5, 6, 7, 8

Figure 3-4. Rear Panel DTI Links

Note: The 8-port option only uses Ports 1 through 6, A/11 and B/12. Ports 7 through 10 cannot be enabled for this option.

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Chapter 3 Installing the TimeCreator 1000

Making Ground and Power Connections

The TimeCreator 1000 has the option of using either 120/220 VAC, or –48 V DC power. For non-redundant operation, install either one AC module or one DC module. For redundant operation, install either two AC modules, two DC modules, or one AC and one DC module (see Figure 3-6).

Ground Connections

After installing the TimeCreator 1000 into the rack, connect the shelf to the proper grounding zone or master ground bar. The grounding lug is a screw on the side of the unit, near the back. Using a ring terminal on the 12 AWG wire, connect the ground lug to permanent earth ground

Recommendation: Although there are a number of methods for connecting the equipment to earth ground, Symmetricom recommends running a cable of the shortest possible length from the ground lug to earth ground.

Making Ground and Power Connections

Power Connections

Install the appropriate power module and make the power connections as follows:

DC Power

1. Ensure the power source is turned off.

2. Connect the frame ground terminal to earth ground.

3. Locate power terminals on the –48 V DC Power Module.

4. Using 16 AWG (minimum) stranded wire, connect primary power to the terminal screws. Symmetricom recommends that you use a #6 spade lug termination for each power lead.

Warning: To avoid possible damage to equipment, you must provide power source protective fusing as part of the installation.

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Chapter 3 Installing the TimeCreator 1000 Making Ground and Power Connections

Figure 3-5. TimeCreator 1000 DC Power Module

AC Power

1. Ensure the power source is turned off.

2. Connect the power cord to the power connector on the 120V-220V AC Power Module.

Note: The AC power socket contains two 2 amp fuses: one in line and one spare.

3. Connect the power cord to the power source.

Warning: To avoid possible damage to equipment, you must provide power source protective fusing as part of the installation.

Figure 3-6. TimeCreator 1000 AC Power Module

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Installation Check List

To verify that the installation of the TimeCreator 1000 is complete, perform the checks and procedures in Table 3-4.

Table 3-4. Installation Completeness Checklist

Ensure the TimeCreator 1000 chassis is securely attached to mounting rack

Ensure that the appropriate modules (and filler panels if needed) are installed

Verify that all power and ground wires are installed correctly and securely Verify that all communications cables are properly installed Verify that all input and output cables are properly installed

Chapter 3 Installing the TimeCreator 1000

Installation Check List

Operation Complete

Applying Power to the TimeCreator 1000

The TimeCreator 1000 is not equipped with a Power switch. DC power is controlled by a power distribution panel. AC power is applied when a standard 120 or 220 VAC power cord connected to the 100-240 AC Power module is plugged into the appropriate power outlet.

Normal Power Up Indications

As the TimeCreator 1000 powers up and begins normal operation, the IOC module and IMC module LEDs all turn on. After the module self-test is complete and the module firmware is operational, the LED states may change to indicate the appropriate state or status.

Table 3-5 provides a description of the module LEDs.

Table 3-5. Module LED Descriptions

LED Color Description

Power Module

Status Off Power input not connected or Power Module Failure

Green Power Module is functioning properly

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Chapter 3 Installing the TimeCreator 1000 Applying Power to the TimeCreator 1000

Table 3-5. Module LED Descriptions (Continued)

LED Color Description

Power Off Module power fault

GPS Off System is not provisioned to use GPS reference

Alarm Off There are no alarms being generated by the system

IMC Module

Green Module power is functioning properly

Amber GPS input is enabled but GPS input has not been

qualified as reference

Green System is provisioned to use GPS reference and GPS

reference is qualified as reference

Red There are alarms being generated by the system

Ethernet Connection

Off No Ethernet link established Green Ethernet link established

Ethernet Activity Off No Ethernet activity

Amber Blinks with Ethernet activity

IOC Module

Ext Ref Off System is not provisioned to use external references

Amber System is provisioned to use external references, but

at least one of the reference inputs has been disqualified from being selected as system reference

Green System is provisioned to use external reference(s)

and all reference inputs are qualified as possible system references

Power Off Module power fault

Green Module power is functioning properly

Alarm Off There are no alarms being generated by IOC

Module’s components, Input, Outputs, Clocks, etc.

Red There are alarms being generated by IOC Module’s

components, Input, Outputs, Clocks, etc.

Active Off Module is in Standby Mode

Green Module is in Active Mode, output source

Holdover Off Module is not in Holdover

Amber Module is in Holdover

Output Off DTI output error or port is in standby mode

Green All DTI server ports are operating normally

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Table 3-5. Module LED Descriptions (Continued)

LED Color Description

DTI Links

Chapter 3 Installing the TimeCreator 1000

Applying Power to the TimeCreator 1000

A/11 - B/12 DTI Client State

A/11 - B/12 DTI Client Connection Status

A/11 - B/12 DTI Server State

A/11 - B/12 DTI Server Connection Status

1 - 10 DTI Server State

Off Disabled, or Enabled and qualified as reference input Amber Enabled and not qualified as reference input Off Disabled or not connected to DTI Server Green Connected to DTI Server

Off Disabled, or client operating normally Amber 1. Enabled, client indicates Warm-up, Free-run,

Holdover, or Acquire states

2. In Test Mode, the DTI Output State LED and DTI Server Port Connectivity Status LED alternate being ON and OFF

Off Disabled or not connected to DTI client Green 1. Connected to DTI client

2. In Test Mode, the DTI Server Port State LED and DTI Server Port Connectivity S tatus LED alternate being ON and OFF

Off Disabled, or client operating normally Amber 1. Enabled, client indicates Warm-up, Free-run,

Holdover, or Acquire states

2. In Test Mode, the DTI Output State LED and DTI Server Port Connectivity Status LED alternate being ON and OFF

1 - 10 DTI Server Connection Status

Off Disabled or not connected to DTI client Green 1. Connected to DTI client

2. In Test Mode, the DTI Server Port State LED and DTI Server Port Connectivity S tatus LED alternate being ON and OFF

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Chapter 3 Installing the TimeCreator 1000 Applying Power to the TimeCreator 1000

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Chapter 4 General Guidelines for using the Symmetricom TimeCreator 1000

This chapter provides basic information to which users can refer to ensure proper system operation.

In This Chapter

 Clock Operations  GPS  NTP Client Mode  DHCP  CLI commands

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Chapter 4 General Guidelines for using the Symmetricom TimeCreator 1000 Clock Operations

Clock Operations

For TOD sources of RTC, User, and NTP, the unit initially sets the time from the selected source. The unit then operates in freerun after that, keeping time according to its local oscillator frequency.

The user can force an update in the User and NTP modes. In GPS mode, the initial time is set from GPS, and the unit maintains frequency and phase lock to GPS.

When recovering from extended holdover, the frequency is locked to the GPS reference. If the phase error is small, the phase is corrected by slewing. If the p hase error is large, an alarm is generated and the user will need to manually correct the phase. This prevents unmanaged discontinuities of the DOCSIS time stamp.

Table 4-1. TOD Source Modes

TOD Source Initial Time Frequency Lock Phase Lock

RTC (Default) Real-time clock Freerun Freerun User User Freerun Freerun NTP NTP Freerun Freerun GPSGPSGPSGPS DTI (subtending) R oot server Root server Root server

GPS

For details on proper installation of the GPS antenna, refer to Appendix C. Proper cable, grounding techniques, and lightning arrestors should be used. Mount the antenna outside, preferably on the roof with a clear view of the sky. Do not mount the antenna near a wall or other obstruction blocking part of the sky. Mount the antenna well above roads or parking lots.

Allow at least one hour for the unit to track and lock to GPS.

NTP Client Mode

If the system time is off by more than four hours, then the system mode should be set to user mode and the time set to within four hours. The unit can then be configured to use NTP.

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Since the unit only sets the time once, the time could be off by more than 100 ms if this procedure is not followed.

DHCP

This unit's DHCP client will not continually attempt to acquire an IP address if the Ethernet cable is not connected at power up, or when DHCP mode is enabled.

After the cable is connected, enter the following commands to restart DHCP:

set ip-state eth0 disable

set ip-state eth0 enable

CLI commands

Chapter 4 General Guidelines for using the Symmetricom TimeCreator 1000

DHCP

Note: The "sync tod-source now" command used in some of the following examples forces the TimeCreator 1000 to immediately start using the new reference for time and frequency. This command is useful in lab tests, but its use should be carefully pla nned since it may cause cable modems to resync.

Logging In And Out

At the login prompt, enter the user name. At the password prompt, enter the password. The default administrator user name is “admin” with password “SymmTC1000”.

To logout, use the command “logout”:

Example

Type

logout and press Enter.

Adding And Deleting Users

Only an administrator-level user can add or delete users. Additional users can be added with the

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set user command

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Chapter 4 General Guidelines for using the Symmetricom TimeCreator 1000 CLI commands

Saving The Present Configuration To Non-volatile Memory

Enter the following command to backup the current configuration:

Set configuration backup

Enter the following command to backup the current IOC configuration in the IMC card:

Set configuration backup IOC

Enter the following command to backup the current IMC configuration in the IOC1 card:

Set configuration backup IMC IOC1

Enter the following command to backup the current IMC configuration in the IOC2 card:

Set configuration backup IMC IOC2

Note: IMC configuration changes are not saved automatically, so it is necessary use the command “set configuration backup” to explicitly save the changes. Failure to save changes with this command will result in IMC configuration changes being lost after the IMC reboots.

See Backing up Provisioning Data, on page 110 for additional details.

Restoring Default Configuration

To restore factory defaults, while preserving users and IP configuration:

Set configuration default

To restore factory defaults:

Set configuration factory

See Restoring Provisioning Data, on page 111 for additional details.

Determining Status

Enter the following commands to display current alarms, the unit status, GPS information, and inventory:

Show alarms (presently active alarms)

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Chapter 4 General Guidelines for using the Symmetricom TimeCreator 1000

Show status (general status of unit)

Show gps (GPS information)

Show inventory

See Backing up Provisioning Data, on page 110 for additional details.

Enabling Outputs

Enter the following command to set the interface state. Example for port 5:

Set interface state port 5 enable

Setting The Output To Test Mode

Enter the following command to set the interface test mode.

CLI commands

Example for port 9:

Set interface test-mode port 9 enable

Configuring For Default Mode (Real Time Clock)

Enter the following commands to set the TOD source to RTC”

Set tod-source rtc

Sync tod-source now

Configuring For User Mode

Enter the following command to set the clock in user mode:

Set tod-source user

Example to set the clock in user mode:

Set clock date 2006-05-20 time 10:23:00

Sync tod-source now

Configuring For GPS Mode

Enter the following commands to the TOD source to GPS:

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Chapter 4 General Guidelines for using the Symmetricom TimeCreator 1000 CLI commands

Set tod-source gps

Set interface state gps enable

(Wait until GPS is available)

Sync tod-source now

Configuring For NTP Mode

Enter the following commands to set up NTP mode:

Show clock

Example if time is more than 4 hours off:

Set tod-source user Set clock date yyyy-mm-dd time hh:mm:ss

Set tod-source ntp

Set NTP-server add <ip address>

Set service ntpd disable

Set service ntpd enable

Sync tod-source now

Configuring For Subtending Mode

Enter the following commands to set up Subtending mode:

Example for portA (port 11):

Set tod-source dti

Set interface type porta client

Set interface state port 11 enable (Previous 2 commands must be issued first)

Example on root server using port 5:

Set interface state port 5 enable

Set interface tod-mode verbose

Forcing Unit To Send New Time

Whenever the “Jam sync required” alarm is raised, which can be caused by changing the TOD source after the unit has left warm-up, you must enter the following command to change the time and DOCSIS time stamp:

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Sync tod-source now

CLI commands

If the unit is not ready when the “sync tod-source now” command is issued, actual execution of this command is postponed until the unit is ready. Use the “

alarms

” command to check for the presence of the “jam sync required” alarm to

show

indicate readiness. This command should also be entered after you change the time in user mode.

Setting Manual Cable Advance

Caution: Manual cable advance should only be performed in a lab environment.

Example to set cable advance for port 5 to 0x001023:

Set cable-adv port 5 manual 00:10:23

Setting Auto Cable Advance

Example to set cable advance for port 5:

Set cable-adv port 5 auto

Configuring Static IP

Example for host ip address of 192.168.5.2, with router gateway at 192.168.5.1:

Set ip-state eth0 disable

Set ip-mode eth0 mode static

Set ip eth0 addr 192.168.5.2

Set ip eth0 mask 24

Set ip eth0 gateway 192.168.5.1

Set ip eth0 broadcast 192.168.5.255

Set ip-state eth0 enable

Configuring Dynamic IP

Ethernet cable should already by connected and DHCP server configured:

Set ip-state eth0 disable

Set ip-mode eth0 mode dhcp

Set ip-state eth0 enable

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Chapter 4 General Guidelines for using the Symmetricom TimeCreator 1000 CLI commands

Switching Active And Standby Cards

Example for IOC 1 presently active, and switching to IOC 2):

Set ioc-state IOC2 active

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Chapter 5 Provisioning

This chapter describes the procedures for provisioning the TimeCreator 1000. Use the procedures in this chapter after you have installed and powered up the TimeCreator 1000 (see Chapter 3, Installing the TimeCreator 1000).

In This Chapter

 Establishing a Connection to the TimeCreator 1000  Managing the User Access List  Managing the IP Address Whitelist  Provisioning Login Authentication  Provisioning Services  Provisioning the Ethernet Ports  Setting the System Date, Time and Time Offset  Setting the DTI Server Type  Provisioning the Input Reference  Provisioning the DTI Links  Provisioning Revertive and Non-Revertive Mode  Provisioning Root Server Recovery Mode  Provisioning SNMP  Provisioning an NTP Server  Provisioning Cable Advance  Provisioning Alarms  Routine Operation Commands  Saving and Restoring Provisioning Data

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Chapter 5 Provisioning Establishing a Connection to the TimeCreator 1000

Establishing a Connection to the TimeCreator 1000

To set up and manage the TimeCreator 1000 with a terminal or a computer with terminal emulation, you must establish either a serial connection or an Ethernet connection. To connect through the serial port, see Communicating Through the

Serial Port, on page 72. If the TimeCreator 1000 is connected to an Ethernet LAN,

use the procedure described in Communicating Through the Ethernet Port, on page

72.

Note: Before you can communicate with the TimeCreator 1000 through an Ethernet connection, you must first configure the Ethernet port using the serial connection.

Communicating Through the Serial Port

An EIA-232 serial port is available on the IMC module for a direct serial connection to a terminal or a computer with terminal emulation. Use the following procedure to connect the TimeCreator 1000 to a terminal or a computer with terminal emulation through a straight serial cable:

Note: For information on restricting user access, see Managing the

User Access List, on page 74.

1. Connect one end of a straight cable to the serial port on the computer or terminal and the other end to the EIA-232 connector on the IMC.

2. Configure the emulation software for 8 data bits, 1 stop bit, no parity, and 9600 baud rate.

Note: 57600 baud rate is supported only in the IMC rev H

version 1.00.13 or below.

3. Start the terminal emulation software and press Enter. The system prompt should appear. If it does not, recheck each step in this procedure.

Communicating Through the Ethernet Port

To communicate with the TimeCreator 1000 using an Ethernet LAN connection, you must first configure the Ethernet port through the EIA-232 serial port.

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Establishing a Connection to the TimeCreator 1000

Chapter 5 Provisioning

Configuring the Ethernet Port

Use the following procedures to configure the TimeCreator 1000 Ethernet parameters (IP Address, Subnet Mask, and Gateway Address).

Note: The TimeCreator 1000 default IP address is 10.0.0.100, the subnet mask is 255.255.255.0, gateway address is 0.0.0.0 (no gateway), and the broadcast address is 10.0.0.255. If these defaults are acceptable, the following procedure using the serial port is not required.

1. Establish a direct serial connection to the TimeCreator 1000 as described in

Communicating Through the Serial Port, on page 72.

2. Provision the IP, Gateway, and Subnet Mask addresses for the TimeCreator

1000. The IT department or site administrator for your location can recommend specific addresses for these parameters. The mask is specified as a prefix number which is the number of 1's from the MSB with the remaining bits set to 0. For example 255.255.255.0 is set with the value 24.Use the dotted decimal format xxx.xxx.xxx.xxx to enter the address parameter with the following commands:

Example

Type

set ip eth0 addr 192.168.0.10 then press Enter. set ip eth0 mask 24 then press Enter.

Type

set ip eth0 broadcast 192.168.0.255 then press Enter.

Type Type

set ip eth0 gateway 192.168.0.254 then press Enter. set ip-state eth0 restart

Type

Connecting Through an Ethernet LAN

1. Ensure that the TimeCreator 1000 is connected to a LAN (see Making

Communications Connections, on page 53 for details).

2. Telnet from your PC to the IP address assigned to the TimeCreator 1000 (see

Configuring the Ethernet Port, on page 73).

3. Type your user name and press Enter. If you are not assigned as a user in the system, contact the system administrator or see Adding a User, on page 75.

4. Type your assigned password and press Enter. The system prompt appears.

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Chapter 5 Provisioning Managing the User Access List

Managing the User Access List

When you are logged in at the Admin level you can add, edit, or delete user names in the user access list. The user list can contain up to 20 names and users can be set to one of three different security levels described in Table 5-1. Users are required to enter a user name and password to log in to the system. Users can access or modify only the parameter settings allowed by their assigned security level.

Caution: To avoid a possible service call, do not lose or misplace the user name and password of the Admin-level user.

Caution: After three failed login attempts the user account is locked out for 15 minutes; this includes the admin user. To avoid a service call, it is recommended that at least two admin-level users be configured.

Table 5-1. User Level and Access

Security Level Description

User Users can edit their password and retrieve information, or access

any command at the User security level.

Power-User Users are allowed to change configuration and issue User-level

commands.

Admin Users are allowed to modify the security database or download new

firmware and issue commands at any level.

Use the procedures in this section to manage user access to the TimeCreator 1000.

Login

Use the following procedure to log in to the system at the admin level.

1. Ensure that the TimeCreator 1000 is connected to a LAN, or directly connected to a PC through the EIA-232 serial port. See Making Communications

Connections, on page 53.

2. If the TimeCreator 1000 is connected to a LAN, Telnet from your PC to the assigned IP address, and start a Telnet session and press Enter.

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If the TimeCreator 1000 is connected to a PC dire ctly through the serial port, st art a session and press Enter.

3. Type your user name and press Enter. The system prompts for a password.

4. Type your password and press Enter. The system prompt appears.

Note: The unit’s default user name is admin and the default p assword is SymmTC1000. To avoid unauthorized access, you should change the default user name and password.

Adding a User

Use the following procedure to add a user to the system access list.

Note:

User passwords can consist of alphanumeric characters, “~”, “*”, “(“,“)”, “!”, “?”, “-”, “_”, and “.” with a minimum of 8 characters and a maximum of 32 characters.

Usernames can consist of numbers, upper and lower case letters, dash "-", and underscore "_", with a maximum of 20 characters. Usernames cannot use a leading dash “-” or underscore "_" as the first character. Usernames cannot use any of the following characters:

/ ( ) | \ ; : “ ‘ , < >

Passwords must contain at least one number or special character. For a description of user access levels, see Managing the User

Access List, on page 74.

1. Login at the Admin level (see Login, on page 74).

2. Type

3. Type

show user and press Enter to view the current list of users. set user add and press Enter. The system prompts yo u for a user name.

4. Type a user name and press Enter. The name you enter will be the log-in name for the user. The system prompts you for the user access level.

5. Type the user access level and press Enter. The system prompts you for a password.

6. Type a password and press Enter. The password you enter will be the log-in password for the user. The system responds with the confirm password prompt.

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7. Retype the password and press Enter.

8. Type

show user and press Enter to verify that the account exists (repeat steps

3, 4, 5, 6, and 7 to add other users).

Deleting A User

Use the following procedure to delete user ABC from the system access list.

1. Login at the Admin level (see Login, on page 74).

2. Type

3. Type

show user and press Enter to view the current list of users. set user del abc and press Enter.

Displaying Current Users and User Access Levels

Use the following procedure to retrieve a list of all assigned users and their access levels. Users logged in remotely via RADIUS or TACACS+ will be displayed as <username> (remote), rather than just <username> for local users.

1. Login at the Admin level (see Login, on page 74).

2. Type

show user and press Enter. The system displays the current list of users.

Note: Users logged in remotely via RADIUS or TACACS+ will be

displayed as <username> (remote), rather than just <username> for local users.

Displaying Logged in Users

Use the following procedure to retrieve a list of users that are currently logged in.

1. Login at the Admin level (see Login, on page 74).

2. Type

show logged-in-user and press Enter. The system displays the current

list of users who are logged in.

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Changing a User’s Password and Access Level

Use the following procedure to change the password and access level.

Note:

/ ( ) | \ ; : “ ‘ , < >

Passwords must contain at least one number or special character. For a description of user access levels, see Managing the User

Access List, on page 74.

1. Login at the Admin level (see Login, on page 74).

2. Type

3. Type

show user and press Enter to view the current list of users. set user password <user> and press Enter. The system prompts you

for a password.

4. Type the user’s password and press Enter. The system responds with the confirm password prompt.

5. Type the user’s password again and press Enter.

6. Type set user modify <user> access-level <access-level>and press Enter. (The access level is 1, 2, or 3, where 3 is admin level.)

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Chapter 5 Provisioning Managing the IP Address Whitelist

Managing the IP Address Whitelist

The whitelist feature in TimeCreator allows the user to filter IP access addresses to prevent malicious attacks. In the default condition, all IP addresses are allowed access. Once the first IP address has been added to the whitelist, any future IP sessions will only be accepted if they originate from IP addresses from the whitelist. This feature is useful when the management port is connected to a public network rather than a private network.

Note: Symmetricom recommends that the IP address of the administrator station always be added to the whitelist first. This will prevent an accidental lockout of the administrator via Telnet/SSH.

The whitelist must be committed before any changes to the whitelist will be implemented.

Note: If the whitelist function is being use for a T imeCreator 1 000 with the TOD-source of NTP, the local host address ( added to the whitelist with the command “

127.0.0.1”

127.0.0.1) should be

set whitelist add

Add an IP Address to the Whitelist

Use the dot-decimal notation format xxx.xxx.xxx.xxx to enter the IP address parameter.

1. Login at the Admin level (see Login, on page 74).

2. To view the current list of IP addresses on the whitelist, type and press Enter.

3. To add a specific IP address to the whitelist, type

address>

192.168.5.10

and press Enter. (For example, set whitelist add

4. To add IP addresses using a subnet mask, type

address>/<ip mask>

and press Enter. The mask indicates which parts of the IP

set whitelist add <ip

address are significant it is specified as a prefix number which is the number of 1s from the MSB with the remaining bits set to 0. A mask of 255.255.255.0 is set with the value 24. (For example,

set whitelist add 192.168.5.0/24) The

default value is 32, or 255.255.255.255, to match the full 32-bit IP address. .

5. Type

set whitelist commit and press Enter.

show whitelist

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Delete an IP Address From the Whitelist

1. Login at the Admin level (see Login, on page 74).

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2. To view the current list of IP addresses on the whitelist, type and press Enter.

3. Type

4. Type

set whitelist delete <ip address> and press Enter. (For example,

set whitelist delete 192.168.5.10).

set whitelist commit and press Enter.

Set the Whitelist to Default

1. Login at the Admin level (see Login, on page 74)).

2. Type

set whitelist default and press Enter.

Provisioning Login Authentication

The authentication scheme used in the TimeCreator 1000 allows you to provision either a RADIUS or TACACS+ server IP address and authentication key(s) for server access. If RADIUS or TACACS+ is enabled, the system allows local login if the server doesn't authenticate the user and the user is configured locally.

show whitelist

Provisioning the TC1000 for Login Authentication

RADIUS Server

To provision the TC1000 with the RADIUS server IP address and the authentication key for server access:

1. Login at the Admin level (see Login, on page 74).

2. Type

3. Type

4. Type

set authentication radius address <address>[:<port#>] and

press Enter (address is the server IP address, for example 192.168.0.10, and the port# is optional).

set authentication radius key <key> and press Enter (key is up to

32 ASCII characters).

set authentication radius state enable and press Enter.

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TACACS+ Server

To provision the TACACS+ server IP address and the authentication key for server access:

1. Login at the Admin level (see Login, on page 74).

2. Type

set authentication tacacs+ address <address>[:<port#>] and

press Enter (address is the server IP address, for example 192.168.0.10, and the port # is optional).

3. Type

set authentication tacacs+ key <key> and press Enter (key is up to

32 ASCII characters).

4. Type

set authentication tacacs+ state enable and press Enter.

Configuring the RADIUS Server

For a FreeRADIUS server (see http://www.freeradius.org/), configuration requires placing the TimeCreator 1000 user information in the file "/etc/raddb/users.conf". For other RADIUS servers, see the appropriate user documentation for information on how to configure the server. The "Class" attribute from the RADIUS server is used by the TimeCreator 1000 to indicate the security level for each authorized user, as described in the Table 5-2 below:.

Table 5-2. Security Levels vs. RADIUS Server Class Attribute Settings

TimeCreator 1000

Security Level

RADIUS Server

“Class” Attribute

User 1 - 4

Power-user 5 - 9

Admin 10 - 15

Listed below are example configurations for the file “/etc/raddb/users.conf” for the FreeRADIUS server.

Example 1

: “Admin”-Level User

For user "usr_a" with a password of "test1a":

usr_a Auth-Type := Local, User-Password == "test1a" Class= "15"

Example 2: “Power-User”-Level User

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For user "usr_b" with a password of "test2b":

usr_b Auth-Type := Local, User-Password == "test2b" Class= "8"

Example 3: “User”-Level User

For user "usr_c" with a password of "test3c":

usr_c Auth-Type := Local, User-Password == "test3c" Class= "1"

The RADIUS client and secret key must also be configured in the RADIUS server. For a FreeRADIUS server, this is configured in the "/etc/raddb/clients.conf" file.

Example

client 192.168.0.0/16

{

secret= testing123 shortname= private-network-2

}

Note: When using the TimeCreator's “show user” command,

users logged in remotely via RADIUS will be displayed as <username> (remote), rather than just <username> for local users.

Note: If you change the "Class" attribute in the file

"/etc/raddb/users.conf", you need to use the “set user del” command to delete the TimeCreator's stale user account (if it exists) for your remote RADIUS user. Then log in to TimeCreator again so the TimeCreator 1000 will recreate the user account for your remote RADIUS user with the new user security level corresponding to new "Class" attribute you specified in the file "/etc/raddb/users.conf".

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Configuring the TACACS+ Server

For the Cisco TAC_PLUS TACACS+ server, configuration requires placing the TimeCreator 1000 user information in the file tac.cfg. For other TACACS+ servers, see the appropriate user documentation for information on how to configure the server. The "priv-lvl " attribute from the TACACS+ server is used by the TimeCreator 1000 to indicate the security level for each authorized user, as described in the Table below:.

Table 5-3. Security Levels vs. RADIUS Server Class Attribute Settings

TimeCreator 1000

Security Level

User 1 - 4

Power-user 5 - 9

Admin 10 - 15

TACACS+ Server

“priv-lvl” Attribute

Listed below are example configurations for the file “tac.cfg” for the Cisco TAC_PLUS TACACS+ server.

Example 1

: “Admin”-Level User

For user "usr_a" with a password of "test1a", and a secret (key) of "testing123":

# # CONFIGURE ENCYPTION KEY key = testing123 # Configure User user = usr_a { pap = cleartext test1a opap = cleartext test1a global = cleartext test1a service = exec { default attribute = permit priv-lvl = 15 } } # End file

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Example 2: "Power-User"-Level User

For user "usr_b" with a password of "test2b", and a secret (key) of "testing123":

# # CONFIGURE ENCYPTION KEY key = testing123 # Configure User user = usr_b { pap = cleartext test2b opap = cleartext test2b global = cleartext test2b service = exec { default attribute = permit priv-lvl = 8 } } # End file

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Example 3: "User"-Level User

For user "usr_c" with a password of "test3c", and a secret (key) of "testing123":

# # CONFIGURE ENCYPTION KEY key = testing123 # Configure User user = usr_c { pap = cleartext test3c opap = cleartext test3c global = cleartext test3c service = exec { default attribute = permit priv-lvl = 1 } } # End file

Note: When using the TimeCreator's “show user” command,

users logged in remotely via TACACS+ will be displayed as <username> (remote), rather than just <username> for local users.

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Note:If you change the "priv-lvl" attribute in the file “tac.cfg”, you

need to use the “set user del” command to delete the TimeCreator's stale user account (if it exists) for your remote TACACS+ user. Then log in to TimeCreator again so the TimeCreator will recreate the user account for your remote TACACS+ user with the new user security level corresponding to the "priv-lvl" attribute you specified in the file “tac.cfg”.

Provisioning Services

Using the Set Service command, you can control the TimeCreator 1000 services (see Set Service, on page 250). This command allows you to enable or disable the following services:

 EIA-232  Telnet  SSH  NTP  SNMP

Example

To enable NTP, enter the following command:

set service ntp enable and press Enter.

Type

Provisioning the Ethernet Ports

The TimeCreator 1000 supports static IP addresses as well as dynamically allocated addresses on the MGMT (Management) port and NTP port. The dynamically allocated address requires a connection to a DHCP server. When provisioning the unit for static IP address, you can set the Host address, Mask address, and Gateway address, or you can set the addresses to the factory default. See Appendix D, Specifications and Factory Defaults for default IP addresses.

Static IP Mode

Use the following procedure to configure the TimeCreator 1000 IP parameters (Host Address, Subnet Mask, and Gateway Address) on the MGMT port. Use the dot-decimal notation format xxx.xxx.xxx.xxx to enter the address parameter.

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Setting the System Date, Time and Time Offset

Example

1. Login at the Admin or Power-User level (see Login, on page 74).

Chapter 5 Provisioning

2. Type

3. Type

4. Type

5. Type

6. Type

set ip-mode eth0 mode static and press Enter. set ip eth0 addr 192.168.0.10 and press Enter. set ip eth0 mask 24 and press Enter. set ip eth0 gateway 192.168.0.1 and press Enter. set ip-state eth0 restart and press Enter.

DHCP Mode

You can either enable or disable DHCP mode on the MGMT port or NTP port. Use the following procedure to configure the TimeCreator 1000 to enable DHCP on the MGMT port.

Example

1. Login at the Admin or Power-User level (see Login, on page 74).

2. Type

set ip-mode eth0 mode dhcp and press Enter.

3. Type

set ip-state eth0 restart and press Enter.

Setting the System Date, Time and Time Offset

The TimeCreator 1000 Time of Day can be set either by an external source, or manually with the Set Clock command. You can set the time and date only in the user tod-source mode. The local time offset only af fects the time associated with the logs. Use the following procedure to manually set the system date, time, and time offset:

1. Login at the Admin or Power-User level (see Login, on page 74).

2. Type

3. Type

set tod-source user and press Enter. set clock date <date value> time <time value> and press Enter.

Enter the date value in format yyyy-mm-dd.

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4. Type set clock offset <offset value> and press Enter. Enter the time offset value in format hh-mm. Only offsets corresponding to valid time zones are supported. The time offset will only affect the time associated with the logs.

Note: If the offset is changed, then the unit saves the configuration and restarts the IMC.

Setting the DTI Server Type

The TimeCreator 1000 can be provisioned as a root server operating with a GPS external reference, or if no external reference is qualified, it can operate in free-run mode. The TimeCreator 1000 can also be provisioned to operate as a subtending server receiving its reference from a root DTI server.

The TimeCreator 1000 stays in warm-up until the time is obtained. If RTC mode is selected, then the time is already available. Other modes need to obtain the time from an external source. Once the unit has passed beyond warm-up, a jam sync is required to adjust the time when changing the TOD source.

Warning: Changing the TO D source and performing the jam sync may require cable modems to re-sync. For information on jam sync, see Force System Time to Reference (Jam Sync), on page 91 and refer to the command Sync TOD-Source, on page 262.

Table 5-4. TimeCreator 1000 Input Signal Source

Reference Source Server Mode Description

GPS Root GPS antenna used to acquire the system’s frequency, DTI

timestamp, and TOD

DTI Subtending External DTI signals used as external input references to

acquire the system’s frequency, DTI timestamp, and TOD

NTP Root NTP server used to acquire the TOD. Frequency is

provided by IOC’s clock in freerun mode

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Table 5-4. TimeCreator 1000 Input Signal Source

Reference Source Server Mode Description

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Setting the DTI Server Type

Real-Time Clock

(RTC)

USER Root User ma nually enters TOD. Frequency is provided by IOC’s

Root Clock on IMC used to acquire the TOD. Frequency is

provided by IOC’s clock in freerun mode

clock in freerun mode

Use the following procedure to provision the TimeCreator 1000 mode of operation as either a root DTI server or subtending server.

Note: A TimeCreator 10 00 that is provisione d as a su btending ser ver must use the reference source of a root DTI server.

Root DTI Server in Free-run Mode

The TimeCreator 1000 operates in free-run mode when there is no qualified external reference and the TOD is either set by the user, set with NTP, or set to the default Real Time Clock (RTC) mode.

User Time Set Mode

The Set Clock Date Time

command is used to set the system time.

Example

To provision the TimeCreator 1000 as a root server in free-run mode with the TOD set by the user to the current time, perform the following steps:

1. Login at the Admin or Power-User level (see Login, on page 74).

2. Type

3. Type

set tod-source user and press Enter. set clock date <date> time <time> and press Enter.

NTP (Client) Set Mode

The Set TOD-Source NTP command is used to provision the Time of Day source to be an NTP server.

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Example

To provision the TimeCreator 1000 as a root server with an NTP server supplying the TOD, perform the following steps:

1. Login at the Admin or Power-User level (see Login, on page 74).

2. Type

set tod-source ntp and press Enter.

Default Time Set Mode

In the default mode, RTC, the time is obtained from the real-time clock (RTC) on the IMC card.

Example

To provision the TimeCreator 1000 TOD source to be the IMC’s real-time clock (RTC), perform the following steps:

1. Login at the Admin or Power-User level (see Login, on page 74).

2. Type

set tod-source rtc and press Enter.

Root DTI Server in GPS Mode

In GPS mode, the time is obtained from GPS. The system waits until it has valid time from GPS before it transitions out of warm-up.

Example

To provision the TimeCreator 1000 as a root server with GPS as the external reference, perform the following steps:

1. Login at the Admin or Power-User level (see Login, on page 74).

2. Type

3. Type

set tod-source gps and press Enter. set interface tod-mode verbose and press Enter.

Subtending DTI Server Mode

A TimeCreator 1000 provisioned as a subtending server must connect directly to a root DTI server through the DTI client interface. A subtending server cannot be referenced to another subtending system. The root server must be in the verbose TOD mode so that the subtending server can obtain the necessary information via the DTI link.

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Example

To provision the TimeCreator 1000 as a subtending server, perform the following steps:

1. Login at the Admin or Power-User level (see Login, on page 74).

2. Type

set tod-source dti and press Enter.

3. Follow the steps in Provisioning the Input Reference, on page 89 to provision the input reference ports.

Note: The root server must be in verbose TOD mode. On the root server, enter the following command: Type set interface tod-mode verbose and press Enter.

Provisioning the Input Reference

When operating in normal (locked) mode, the TimeCreator 1000 uses the external reference (GPS or DTI) to acquire the system’s frequency, DTI timestamp, and TOD alignment. (See Operating Modes, on page 29 for details about Normal and other operating modes.) A GPS reference is connected to the GPS interface on the IMC of root server. DTI references are connected to ports A and B of a subtending server, and you can provision a priority level for each port. You can also provision NTP to provide TOD, with frequency provided by the IOC clock. The TOD source must be set prior to enabling the desired interface.

Setting the GPS Parameters

When the GPS reference is enabled, you can set the satellite position parameters either automatically or manually . Use the command “set gps auto” to set the satellite position parameters automatically. For manual mode, use the command “set gps mode manual position <latitude> <longitude> <height> [mask <mask>]”. As the command shows, in manual mode, you must specify the latitude, longitude, and height. You can also specify the elevation mask which filters the satellites used by the system. See the Set GPS command description for additional examples and details.

Note: Symmetricom recommends using GPS in “auto” mode.

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Example

To provision the TimeCreator 1000 to set a GPS reference for manual mode and specify the position as a latitude of N37.22.45.123, longitude of W121.55.36.123, height of 17.5 meters, with a mask of 25 degrees, perform the following steps:

1. Login at the Admin or Power-User level (see Login, on page 74).

2. Type the command show

show tod-source to verify that the TOD source has

been set to GPS. If the TOD source is set to GPS, proceed to step 3. If the the TOD source is not

set to GPS, type the command

3. Type

4. Type

set interface state gps enable and press Enter.

set gps mode manual position n37:22:45.123 w121:55:36.123

17.5 mask 25

and press Enter.

set tod-source gps and press Enter

Setting the DTI Parameters

DTI references connect to ports A and B. When you provision DTI as a reference (TOD-source set to DTI), you must set ports A and B for client mode and enable these ports. You can also set a priority value for each port.

Example

To provision ports A and B for DTI reference, set port A for a priority of 1 and port B for a priority of 2 then perform the following steps:

1. Login at the Admin or Power-User level (see Login, on page 74).

2. Type the command show

show tod-source and press Enter to verify that the

TOD source has been set to DTI. This must be set before the state or type can be set.

If the TOD source is set to DTI, proceed to step 3. If the the TOD source is not se t to DTI, type the command

3. Type

4. Type

5. Type

6. Type

7. Type

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set interface type portA client and press Enter. set interface type portB client and press Enter. set interface priority portA 1 and press Enter. set interface priority portB 2 and press Enter.

set interface state port 11 enable and press Enter.

set tod-source dti and press Enter

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8. Type set interface state port 12 enable and press Enter.

Setting the NTP Parameters

When the TimeCreator 1000 is provisioned for free-run mode, the unit can reference its time from an external NTP server connected to the MGMT or NTP port.

Example

To enable the MGMT port to receive TOD from an NTP server , perform the following steps:

1. Login at the Admin or Power-User level (see Login, on page 74).

2. Type the command show

show tod-source and press Enter to verify that the

TOD source has been set to NTP. If the TOD source is set to NTP, proceed to step 3. If the the TOD source is not

set to NTP, type the command

3. Type

4. Type

5. Type

set service ntp enable and press Enter. set firewall ntp enable and press Enter. set ntp-server add <ip address> and press Enter. If required by the

set tod-source ntp and press Enter

NTP server, specify a keyID with the NTP-Server command, use the NTP-Key command to add key configuration, and NTP-Authorization to enable or disable authorization operation.

Force System Time to Reference (Jam Sync)

The “jam sync” function allows you to either set the current clock as TOD-source reference immediately, or to specify when the “jam sync” will occur.

Warning: Changing the TOD source and performing the jam sync may require cable modems to re-sync. For information on jam sync, see Force System Time to Reference (Jam Sync), on page 91 and refer to the command Sync TOD-Source, on page 262.

Example

To immediately perform a “jam sync”, perform the following steps:

1. Login at the Admin or Power-User level (see Login, on page 74).

2. Type

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sync tod-source now and press Enter.

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Chapter 5 Provisioning Provisioning the DTI Links

Provisioning the DTI Links

The TimeCreator 1000 rear panel has ten permanent DTI client links that provide DTI timing signals to client elements in an M-CMTS architecture. With the 8-port IOC module option, however, only Ports 1 through 6 are active. There are also two DTI client/server ports that can be provisioned as either DTI reference links (for subtending servers), or as additional DTI links to client elements. DTI ports 11 and 12 must be provisioned to the appropriate type, either client or server, before being enabled or disabled.

The LED status indicators on the DTI links are described in Table 5-5.

Enabling and Disabling the DTI Server Links

To enable all DTI link ports, perform the following steps:

1. Login at the Admin or Power-User level (see Login, on page 74).

2. Type

3. Type

set tod-source dti and press Enter. set interface state all enable and press Enter.

Enabling and Disabling the DTI Client/Server Links

To set up ports 11 and 12 as client DTI links, perform the following steps:

1. Login at the Admin or Power-User level (see Login, on page 74).

2. Type

3. Type

4. Type

5. Type

set interface type portA client and press Enter. set interface type portB client and press Enter. set interface state port 11 enable and press Enter. set interface state port 12 enable and press Enter.

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Table 5-5. DTI Link LED Indicators

Indicator Color Description

Front Panel of IOC Module

DTI Output Status Off 1. A DTI output issue exists on at least one DTI

output port

2. When operating as the Standby IOC

Green All DTI outputs are operating normally

Connectors for DTI Ports 1 - 10 and

DTI Ports 11 & 12 (in Server mode)

DTI Output State Off 1. Disabled

2. Client Operating Normally

Amber 1. Enabled, client indicates W arm-up, Free-run,

Holdover, or Fast-Lock states

2. In Test Mode the DTI Output State LED and DTI Output Connectivity Status LED shall alternate being “on” and “off”

DTI Output Connectivity Status

Off 1. Disabled

2. Not connected to DTI client

Green 1. Connected to DTI client

2. In Test Mode the DTI Output State LED and DTI Output Connectivity Status LED shall alternate being “on” and “off”

DTI Ports 11 & 12 (in Client mode

DTI Input State Off 1. Disabled

2. Enab le d an d qu a lified as re fe re nc e inp ut

Amber E nabled and not qualified as reference input

DTI Input Connectivity Status

Off 1. Disabled

2. Not connected to DTI server

Green Connected to DTI server

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Chapter 5 Provisioning Provisioning Revertive and Non-Revertive Mode

Enabling DTI Test Mode

Test Mode produces a continuous stream test signal from the DTI links that is all ones prior to Manchester encoding.

Example

To enable test mode on port 10, perform the following steps:

1. Login at the Admin or Power-User level (see Login, on page 74).

2. Type

set interface test-mode port 10 enable and press Enter.

Provisioning Revertive and Non-Revertive Mode

The revertive and non-revertive function allows you to select the action taken when the system reference at ports A and B is disqualified and then re-qualified.

In the revertive mode, if an input used as the system reference is disqualified (for any reason), the reference switches to the next-highest input and reverts to the initial input when that input is re-qualified. In this mode, the reference switches two times: once when the disqualifying event occurs, and again when the initial input is re-qualified.

In the non-revertive mode, when the system reference is disqualified (for any reason), the system reference switches to the other input but does not revert to the initial input when the initial input is re-qualified. The system reference switches only once when the disqualifying event occurs. When the priorities of the ports are the same, the ports act in the non-revertive mode. If the priorities are different, the port s act in the revertive mode.

Example

To provision the TimeCreator 1000 ports A and B for revertive mode, perform the following steps:

1. Login at the Admin or Power-User level (see Login, on page 74).

2. Type

3. Type

94 TimeCreator 1000 User’s Guide 097-93100-01 Revision C – February, 2010

set interface priority portA 2 and press Enter.

set interface priority portB 3 and press Enter.

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Provisioning Root Server Recovery Mode

Root Server Recovery is Symmetricom's enhancement to the DOCSIS Timing Interface (DTI) Specification which allows a root server to re-align its subtending servers in a timely and orderly fashion, without network interruption.

Root Server Recovery consists of two separate mechanisms:

1. Root Server automatically switching to client mode to acquire time and phase from a subtending server

2. Root Server returning to server mode and slowly steering the subtending servers' time and phase back in phase with the root

With the TimeCreator 1000, when the root server has lost power or is taken off line for servicing, the subtending servers' clocks will enter the ho ldover state and slowly drift over time. When the root server is restored and has warmed up, it will automatically switch to a DTI Client role and acquire the time and phase from a subtending server connected Port 12. The root server will then switch back to its role as server and use this time and phase to steer the remaining subtending servers time and phase. Clients connected to the subtending server will also slew with the subtending server. If the subtending servers are forced to slew their time and phase too rapidly, however, this may cause modems to re-range, resulting in service disruption. Root Server Recovery can be configured to slew at a slow rate that avoids service disruptions.

Chapter 5 Provisioning

Benefit of Using Root Server Recovery

Root Server Recovery minimizes service disruption caused by root server outage, thus improving network availability.

Root Server Recovery vs. Root Recovery

The way the root server recovers is based on the TOD Source mode in which it is operating. When the root server is in USER TOD Source mode and auto recovery is enabled, Root Server Recovery mode is used. When the root server is in GPS, NTP, or RTC TOD Source mode, Root Recovery mode is used. Table 5-6 shows the recovery mode for all TOD Source modes.

In Root Server Recovery mode, the root is switched from server to client mode, thus allowing it to acquire TOD and phase data from a subtending server. The root is then switched back to server mode, allowing it to steer the subtending servers time and phase. Automatic root server recovery is only available for the USER TOD Source mode, as shown in Figure 5-1. Figure 5-2 shows a simple deployment with Root Server Recovery. Figure 5-3 shows a larger scale deployment with Root Server Recovery.

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Chapter 5 Provisioning Provisioning Root Server Recovery Mode

In Root Recovery mode, the root remains in server mode when it acquires T OD and phase from its TOD source. When the root server is turne d on af ter po wer failure or after it has been serviced, it will automatically query time and phase from its TOD source, and use this time and phase to steer the subtending servers time and phase. Clients connected to the subtending server will also slew with the subtending server. Figure 5-4 illustrates the root recovery process based on TOD source.

Table 5-6. Recovery Modes Based on TOD Source

TOD

Source

USER Root Server Recovery Configure Port 12 as a

GPS Root Recovery No action required for root

NTP Root Recovery No action required for root

Real-Time

Clock

Recovery Mode Root Server

Requirements

Client, but do NOT enable it

Connect Port 12 of root server to Port 1 of subtending server

Enable root server auto recovery feature

server

Root Recovery No action required for root

server

Subtending Server

Requirements

Connect Port 1 of subtending server to Port 12 of root server

Enable Port 1 of subtending server as DTI output

n/a

DTI n/a n/a n/a

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Provisioning Root Server Recovery Mode

Chapter 5 Provisioning

Figure 5-1. State Diagram for Root Server Recovery - USER mode

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Chapter 5 Provisioning Provisioning Root Server Recovery Mode

Figure 5-2. Simple Deployment with Root Server Recovery

Figure 5-3. Large Scale Deployment with Root Server Recovery

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Provisioning Root Server Recovery Mode

Chapter 5 Provisioning

Figure 5-4. State Diagram for Root Recovery - GPS, NTP, and RTC modes

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Chapter 5 Provisioning Provisioning Root Server Recovery Mode

Requirements for Root Server Recovery

Root Server Requirements

The requirements to configure the root server for root server recovery are:

 Configure Port 12 as a Client, but do NOT enable it  Connect Port 12 of root server to Port 1 of subtending server  Enable root server auto recovery feature

Subtending Server Requirements

The requirements to configure the subtending server for root server recovery are:

 Connect Port 1 of subtending server to Port 12 of root server  Enable Port 1 of subtending server as DTI output

Duration of Root Server Recovery Process

If there is an outage of a TimeCreator root server, when it gets back on line, it will slowly pull the phase of the subtending servers back into alignment in a manner which minimizes cable modem re-ranging. The process of steering the subtending servers time and phase can take as much as 32 hours depending on how long the root server was off line, and on whether rapid recovery mode is selected. If mis-alignment of the subtending server is large, it may take a long time for all the DTI elements to be aligned.

When conditions warrant, the user can set another root-recovery per port control, rapid recovery, to achieve a shorter re-alignment time. Note that this will cause re-ranging of some DTI clients. The user can view the amount of time required for recovery to determine whether they need to activate rapid recovery by displaying status of the recovery process. See the sections Displaying Status of Root Server

Recovery, on page 101 and Enabling Rapid Recovery Mode, on page 102 for

details.

Warning: Using rapid recovery mode will cause network

interruption

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