Symmetricom S100 - page 109

S100 User Guide – Rev. D – June 2005 101

Figure 5-44: Large Net NTP Configuration 2

Contents

Main Page Table of Contents Chapter 1 Introduction and Overview 1 Chapter 2 S100 Technology 7 Chapter 3 Installation and Configuration 13 Chapter 4 The Web-Based Interface 53 Page Chapter 5 Operations & Time-Protocols 87 Chapter 6 Frequently Asked Questions 109 Appendix A S100 Specifications 119 Page Chapter 1 Introduction and Overview Conventions Used Product Details Time Standards Global Positioning System (GPS) Stratum Levels Time Synchronization and Business How the S100 Solves the Problem National Measurement Institutes Special Safety Instructions S100 Technology Web-based Access Time Distribution Model How the S100 Works S100 and Time Distribution S100 and Client Software S100 and NTP v4s Security Features S100 and the Global Positioning System Page Chapter 3 Installation and Configuration Overview Getting Up and Running Unpacking Your S100 For the S100-Dial-up/ACTS For the S100-GPS Your CD-ROM Using the Software PuTTY Folder Details PUTTY.EXE PSCP.EXE PSFTP.EXE PLINK.EXE PAGE ANT .EX E PUTTYGEN.EXE Note: Installing Your S100 Rack Mounting Caution: Primary Power Connection Important Safety Instructions! Page Page On the S100 Rear Panel Note: Installing the GPS Antenna Note: Choosing an Antenna Location Installing the GPS antenna Connecting the Rubidium Option Establishing A Serial Connection Page Note: Setting Up the IP Address Note: Testing Network Functionality Note: Page How to Acquire Time Logging On Note: Administrator Log-In Next Step Note: The Configuration Wizard Note: Page Page GPS Note: Page Page Page Page Page Page Page Page Configuring NTP IRIG-B (v.120,122,123) Page Page Page Using SymmTime Installing SymmTime Page Page Page Chapter 4 The Web-Based Interface Overview Interface: Screen Reference Logging In Administrative Interface Page Page Page NTP Relationships Page NTP Time Source Test NTP Dialup NTP Restart NTP Status Page Page Advanced: Keys/Certificates Timing Engine Main Settings Timecode Settings GPS Information GPS Health GPS Signal Strength GPS Time GPS Position Other Information Engine Time Clock Settings Control Settings Networking Page Page Traceroute Administration Shutdown/Reboot Page Page Page Alarms Configuration Wizard Logs NTP Log Page Page Help Page Page Chapter 5 Operations & Time-Protocols S100: Operations and Time Protocols Sysplex Timer Page Note: Time Protocol (RFC 868) Daytime Protocol (RFC 867) Simple Network Time Protocol (RFC 2030) Network Time Protocol (RFC 1305) Page Page NTP Authentication Authentication: NTP v3 Authentication: NTP v4 Autokey Public Domain NTP Package Typical NTP Configuration Considerations Other NTP Considerations Clients Basic NTP Configuration Page Page Page Page Page Page Peers Security ACTS Interface: Dial-up ACTS Operation SNMP (Simple Network Management Protocol) Version 1 Note: Version 3 Page Page Chapter 6 Frequently Asked Questions Questions How can we obtain NTP client software to use with the S100? What are the main differences between SNTP and NTP clients? Is there a way to get GPS time instead of UTC time from the S100? How does the S100 handle Leap Second? Note: What signal strengths are required by the S100 receiver to start tracking? How do I check versions of the software in the S100? What is the maximum number of computers that can be networked to the S100? How many satellites are necessary for me to operate the S100? How do I know if the satellite signal strength is good? What is the maximum antenna cable length for use with the S100? What are the available antenna cable lengths and antenna requirements? Page Is NTP v4 compatible with Network Address Translation (NAT) gateways? How does the S100 clock behave when a leap second is introduced? How-tos and Tips How to install NTP v4 on a UNIX system How to configure an NTP v4 client to connect to an NTP v4 server with the autokey scheme How to verify NTP v4 autokey client connectivity with an NTP v4 server How to install your S100 How to get time using dial-up How to install your GPS antenna How to acquire and install SymmTime Use the quick How to guide How to change the root password Note: Solutions The S100 does not respond to ping command The S100 does not respond to NTP queries I cannot establish a serial connection with the S100 My S100 wont track satellites Page Appendix A S100 Specifications Appendix E on page 141. S100 Data Sheet Specifications Component Specifics Description Pin Descriptions S100 Data Sheet Specifications Appendix B Time Glossary Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Appendix D Customer Assistance US Assistance Center Customer Service Technical Support EMEA Assistance Center Page S100 User Guide Rev. D June 2005 139 Appendix C Declaration of Conformity DECLARATION OF CONFORMITY Symmetricom, Inc. 3750 Westwind Blvd. Santa Rosa, Ca. 95403 USA Declares that the MODEL S100 NETWORK TIME SERVER FCC NOTICE AND COMPLIANCE STATEMENT Class A Symmetricom, Inc. 3750 Westwind Blvd. Santa Rosa, Ca. 95403 USA Declares that the following Model: Antenna Replacement Page Index Numerics A B C D E F G H I J K L M N O P Q R S Page T U V W X Y Z