TimeVault TM Trusted Time Server User’s Manual 6000–100 Revision D January 2, 2003
The information in this manual is subject to change without notice and should not be construed as a commitment by Symmetricom, Inc. Furthermore, Symmetricom, Inc. reserves the right, without notice, to make changes to equipment design as advances in engineering and manufacturing methods warrant. The material described in this manual may be used or copied only in accordance with the terms of the license pertaining to the software and hardware referred to herein. © 2003 Symmetricom, Inc. All rights reserved.
FCC NOTICE AND COMPLIANCE STATEMENT Class A Symmetricom, Inc Timing, Test, & Measurement Division 3750 Westwind Blvd. Santa Rosa, Ca. 95403 USA Declares that the following Models: TIMEVAULT 6000-100, 6000-101 CONFORM TO THE FOLLOWING FCC NOTICE: This device has been tested and found to fully compliant with the limits with the FCC Part 15 Subpart B and ICES-003 Class B Limits, using the CISPR 22:1985 specifications and ANSI C63.4:1992 methods.
DECLARATION OF CONFORMITY In accordance with ISO/IEC GUIDE 22 and EN 45014 Symmetricom, Inc Timing, Test, & Measurement Division 3750 Westwind Blvd. Santa Rosa, Ca.
Permission to use, copy, modify, and distribute NTP software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appears in all copies and that both the copyright notice and this permission notice appear in supporting documentation, and that the name University of Delaware not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission.
Settings of TimeVault Ethernet Ports Record TimeVault network configuration for the NET port below, for quick reference. NET Port Ethernet Address:___________________________________ NET Port IP Address:________________________________________ NET Port Subnet Mask:______________________________________ NET Port Default Gateway:___________________________________ iv TimeVault™ User’s Manual 6000-100Front.fm Rev.
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Please fax or mail this survey back to Symmetricom’s Technical Documentation Department. Fax: 707-527-6640 Mail: Symmetricom 3750 Westwind Blvd. Santa Rosa, CA 95403 User’s Manual Documentation Survey Our Questions Your Answers Check off the main reasons you consult a manual.
On a scale of 1- 6, please rate the following sections of the User’s Manual for: • clarity • completeness • usefulness Circle the number of your rating: 1-2 = Unacceptable; 3-4 = Meets Expectations; 5 = Exceeds Expectations; 6 = Outstanding Unacceptable Meets Expectations Exceeds Expectations Outstanding General Information (including Specs) 1 2 3 4 5 6 Installation (cabling) 1 2 3 4 5 6 Quick Start Guide 1 2 3 4 5 6 Web/Telnet Access 1 2 3 4 5 6 Keypad Functions 1 2 3 4
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Table of Contents 1 2 Table of Contents i General Information 1 Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Overview of TimeVault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Limitation Of Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Proprietary Notice . . . . . . . . . . . . . . . . .
Table of Contents Wrap-Up & Advanced Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 29 4 Remote Operation 31 Web Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Starting the Web Browser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Accessing TimeVault’s Web Pages . . . . . . . . . . . . . . . . . . . . . . Configuration Control Login Page . . . . . . . . . . . . . . . . . . . . . . Remote Configuration. . . . . . . . . . . . . . . .
Table of Contents F100 T – Current Time Source Request . . . . . . . . . . . . . . . . . . 66 F100 CONFIG – FTP Configuration of NTP, SNMP & ACTS Parameters 67 F100 LOCK – Remote Lockout . . . . . . . . . . . . . . . . . . . . . . . . . 76 F100 L – Lock Display Request . . . . . . . . . . . . . . . . . . . . . . . . 76 F100 J - Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 F100 BH - Burn Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents For more information . . . . . . . . . . . . . . . . . . . . . . . . 96 B MD5 Authentication and NTP Broadcast Mode 99 Introduction to MD5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 NTP Broadcast Mode with MD5 Authentication . . . . . . . . 101 NTP Broadcast Mode without Authentication . . . . . . . . . . 102 Configuration of NTP on the Timeserver . . . . . . . . 102 Configuration of NTP on the Time Client . . . . . . .
1 General Information This manual provides you with all of the information necessary to properly install and operate the TimeVault™ Time Server (hereafter referred to as TimeVault). Optimization for time functionality means that accurate position readouts are not available. The information in this manual includes any normal maintenance and adjustment data that may be required to facilitate field repairs. 1.1 Conventions The conventions used in this manual are: Text = Indicates body text.
Chapter 1: General Information 1.2 Overview of TimeVault Overview of TimeVault TimeVault is a high-performance, internet-enabled Network Time Protocol (NTP) server that operates in a secure access environment and provides time to multiple clients with extreme accuracy. To provide trusted time and guard against any denial of service, TimeVault uses GPS as a primary synchronization source, backed up by ACTS and NTP as secondary and tertiary sources, respectively.
Proprietary Notice 1.5 Chapter 1: General Information Proprietary Notice THIS DOCUMENT, WHETHER PATENTABLE OR NON-PATENTABLE SUBJECT MATTER, EMBODIES PROPRIETARY AND CONFIDENTIAL INFORMATION AND IS THE EXCLUSIVE PROPERTY OF SYMMETRICOM, INC. IT MAY NOT BE REPRODUCED, USED OR DISCLOSED TO OTHERS FOR ANY PURPOSE EXCEPT THAT FOR WHICH IT IS PURCHASED OR LOANED. 1.6 Physical Specifications TimeVault fits in a standard 1U (1.75-inch [4.445-cm]) high, 19-inch (48.
Chapter 1: General Information 1.
Power Input Specifications 1.8 Chapter 1: General Information Power Input Specifications The power input specifications of TimeVault are: Power Input 1.9 AC Mains: (base model) 100 to 240 VAC, 47-440 Hz IEC 320 Connector –48 VDC (optional): –36 to –60 VDC 4 position Barrier Strip Connection Fuse: 1A Slow-Blow (rear panel) Power Requirement: <20 W maximum Certifications FCC CE (applies to base model only) UL (applies to base model only) 1.
Chapter 1: General Information 1.11 Network Time Protocol Synchronization Specifications Network Time Protocol Synchronization Specifications TimeVault’s hardware is specifically designed to implement the NTP server function. As such, it was carefully designed to minimize the unknown latencies in timestamping received and transmitted NTP packets. The NTP timestamp accuracy specifications are: Received Timestamp Accuracy: <0.1 ms, relative to synchronization source Transmitted Timestamp Accuracy: <0.
Front Panel Interface 1.12 Chapter 1: General Information Front Panel Interface This section provides a general description of TimeVault’s front panel input devices. For details about how to enter commands and interpret display readouts, see “Overview and Format” on page 4-49. TimeVault’s front panel is your primary interface with the system. Input is through six keypad buttons (four directional, SET-UP and SAVE). Output is through the two-line, 20-character alphanumeric display (see Figure 1-1, below).
Chapter 1: General Information Interface Specifications 1.13 Interface Specifications 1.13.1 NET Port Ethernet Interface Type: Standard RJ-45 8-pin connector for 10Base-T and 100Base-T standards Frame Format: IEEE 802.3 Supported Protocols/Applications: 1.13.2 Telnet HTTP DHCP SNTP TCP/IP SNMP TFTP or FTP NTP and Broadcast NTP Utility Port (RS-232 I/O Interface) Data: Serial functions (as listed in Section 4.
Interface Specifications 1.13.3 Chapter 1: General Information ACTS Port Data: ACTS Service time updates Data Rates: 9600 Connector: RJ–11 The ACTS modem requires a separate analog phone line. See Appendix E, “Automated Computer Time Service (ACTS)”, for more information about ACTS. 6000-100Ch1.fm Rev.
2 Installation and Start-Up 2.1 Site Preparation 2.1.1 Mounting Instructions To securely mount TimeVault in any EIA standard 19-inch (48.26-cm) rack system, use the equipment supplied in Symmetricom’s Rack Mount Kit and follow the steps outlined below. The Rack Mount Kit contains: • 2 mounting brackets (part number 206-719) • 4 flat-head, Phillips screws (part number 241-008-005, 8-32 x 5/8) To rack mount TimeVault: 1.
Chapter 2: Installation and Start-Up Site Preparation 6. Place TimeVault in a 1 ¾ in (4.445 cm) opening in any EIA Standard 19-in rack system, and position the unit so that the rack holes line up with the holes in the bracket. 7. Use the appropriate screws to secure the brackets to the rack. 8. Ensure that the operating ambient temperature does not exceed +50 °C. Installation requires the use of standard rack mount hardware. 2.1.
Site Preparation 2.1.3 Chapter 2: Installation and Start-Up Antenna Information Voltage Requirement and Signal Levels 12 V GPS Antenna TimeVault requires a 12 V antenna. Any antenna that does not support 12 V may be severely damaged if plugged into TimeVault. Coaxial Cable The GPS Synchronized Receiver, integral to TimeVault, operates on the L1 (1575.42 MHz) signal and the C/A code (1.023 MHz bit rate) with a minimum signal level of –162.0 dBW and a maximum signal level of –137.0 dBW.
Chapter 2: Installation and Start-Up Site Preparation extend mast height to prevent multipath cancellation. The antenna should be at least 3.28 ft (1.0 m) from a reflecting surface. The figure at the right shows the recommended mounting of the antenna to the mast. 2.1.5 GPS Window-Mounted Antenna (140-619) Installation The GPS Window-Mounted Antenna is intended for use with products featuring ‘single satellite timing,’ (available with firmware version 8 and above).
Cabling 2.2 Chapter 2: Installation and Start-Up Cabling Refer to the figures below for TimeVault connector locations. The numbers in the drawing refer to that connector’s position in Table 2-1. Connect the cables in the order listed in Table 2-1 below. In order to avoid network addressing conflicts, be sure to configure network parameters before connecting the Ethernet cable.
Chapter 2: Installation and Start-Up Cabling Table 2-1: TimeVault Cabling Chart Connection Steps Cable Name 1 Sync In Required / Optional Connect Point / Type Label Required Female BNC Connector for 12 V GPS Antenna ANTENNA ACTS (Be sure your antenna supports 12 V) 2 ACTS Modem Required for fully redundant operation RJ-11 3 Chassis Ground Optional Ground screw 4 Power Required Power socket 100–240 V, 1 A 50–60 Hz or 36–60 VDC POS GND Stop cabling at this point, enter network param
Power-Up 2.3 Chapter 2: Installation and Start-Up Power-Up At power-up (cold boot), the front-panel display is blank. After about 10-12 seconds, the display reads: TimeVault Booting... After another 10 seconds, the display reads: TimeVault Loading...
Chapter 2: Installation and Start-Up Power-Up Satellite Acquisition Satellite acquisition begins at power-up and continues until power-down. The length of satellite acquisition time depends on many factors, some of which are described below. When TimeVault performs initial acquisition of GPS satellite data, it ‘listens’ for all available GPS signals. After three satellites are acquired, the receiver locks onto GPS as a reference source, and delivers UTC time.
Power-Up Chapter 2: Installation and Start-Up Table B.1: Summary of Firmware Version 8 Improvements 2.3.2 Version 7 and earlier Version 8 and after If the number of current satellite signals drops to 1 or 2, the unit uses GPS as reference source for 10 minutes. If the number of satellite signals drops to zero, the unit keeps GPS as the reference source for 5 minutes while it locks onto another GPS satellite signal.
Chapter 2: Installation and Start-Up 2.3.
Power-Up Chapter 2: Installation and Start-Up Once stabilized, NTP displays UTC time and the current date on the front panel display in the following default format: UTC: DDD;HH:MM:SS dddmmmnnyyyy...
Chapter 2: Installation and Start-Up 2.3.5 Power-Up Rolling Redundancy Rolling redundancy ensures secure, uninterrupted time delivery. During normal operation, TimeVault receives the time through GPS, its designated primary synchronization source. If GPS loses time synchronization, there is a brief holdover period before TimeVault’s modem calls ACTS, the designated secondary synchronization source. During this period, TimeVault uses its internal oscillator to deliver precise time.
Front Panel Interface 2.4 Chapter 2: Installation and Start-Up Front Panel Interface Figure 2-6 Front Panel Display and Keypad The TimeVault front panel provides input through 6 keypad push-buttons (four directional keys, SET-UP, and SAVE), and output through the two-line, 32-character alphanumeric LCD. The letter at the end of the output date line indicates the synchronization source in use (G for GPS, A for ACTS and N for NTP). Use the keypad for initial system configuration (see page 2-28). 2.4.
Chapter 2: Installation and Start-Up 2.4.2 Front Panel Interface Keypad Operation Using the front panel keypad, you can view and modify the following network parameters and function settings: • Password • IP Address • • • • • Subnet Mask Default Gateway DHCP (Off/On) Remote Control (Unlocked/Locked) Display Security (ON/OFF, Logout) Directional Keypad Push-Buttons Figure 2-7 Front Panel Keypad (Close-Up) Keypad Entry Guidelines The following general guidelines apply to keypad function entry.
Front Panel Interface Chapter 2: Installation and Start-Up Front Panel Network Parameter Display The following sequence appears on the front panel alphanumeric display when you repeatedly press the SET-UP push-button. After first power-up, if you enable the Display Security feature, you must enter your user ID and password before these parameters appear on the display. The values illustrated below are examples only. If you are ready to configure TimeVault for the first time, go now to Section 2.
Chapter 2: Installation and Start-Up Front Panel Interface 7. Display Security Logout. An example of the display is: Display Security Logout Whenever you save changes to any network parameter in this sequence, TimeVault automatically reboots (this does not include the DHCP, Remote Control, and Display Security functions). The Remote Control feature determines the availability of remote access to TimeVault.
Front Panel Interface Chapter 2: Installation and Start-Up Enter a character with either the ↑ or ↓ arrow, as described above. Press the → directional push-button to advance the cursor. Repeat step 2 and step 3 until you have entered all the user ID characters. Press the SET-UP push-button to reposition the cursor on the PW: line. Enter password characters using step 2 and step 3 above. Every time you press the → directional push-button, the previous character becomes a “*”. 7.
2.5 NET Port Network Parameters: First Time Configuration After connecting the GPS antenna, supplying power to TimeVault, and achieving successful stabilization, stop cabling and configure the network parameters and functions for the first time. Then connect the Ethernet cable and, optionally, the serial cable. Observing this order of events ensures that the IP Address is correct and sets operating speed at 10Base-T.
DHCP Configuration Chapter 2: Installation and Start-Up 9. End the configuration sequence by pressing SAVE. TimeVault automatically resets if you have saved any changes to any network parameter (excluding Remote Control), and sets the operating speed at 10Base-T. Go to the section “Verify Functionality” to verify the operation of the TimeVault. 2.6 DHCP Configuration The easiest way to configure the network parameters is via Dynamic Host Configuration Protocol (DHCP).
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3 Remote Operation Symmetricom’s TimeVault is an advanced time server that provides trusted, accurate time from multiple time sources over an Ethernet connection to multiple client sites. One of TimeVault’s great strengths is its remote control capability. You can configure parameters through command line input using Telnet from a distant terminal, or use TimeVault’s web interface to program the unit over the Internet, from anywhere in the world.
Chapter 3: Remote Operation 3.1.2 Web Access Accessing TimeVault’s Web Pages In the Location field (Netscape), the Address: field (IE), or the equivalent field in the window of a different web browser, enter the IP address assigned to TimeVault’s NET Port in the following format: http:// An example of an TimeVault’s NET Port IP address is: http://192.168.1.1 After entering the NET Port IP address, Symmetricom’s home page appears in the browser window.
Web Access Chapter 3: Remote Operation All values displayed on these pages are static, that is, they do not reflect changes that occurred following the initial display of the page. For example, the current clock source and UTC time and date, which always appear on the Home and Time Status pages, are frozen at the instant the web page first displayed and do not automatically update.
Chapter 3: Remote Operation 3.1.4 Web Access Remote Configuration. Once you have logged in from the Configuration Control Login page, you can edit TimeVault parameters. To edit ACTS parameters, go to the ACTS Control page. To edit NTP or SNMP parameters, go to the Network Control page and click either NTP Configuration or SNMP Configuration to reach their respective remote control pages.
Web Access Chapter 3: Remote Operation where: number = line inter = = type retry timeout = = = duration = delay period flag speed = = = = fudge pollcounter = = center = modemInit = the ACTS telephone number, including area code; this example shows the NIST service in Boulder, CO, U.S.A.
Chapter 3: Remote Operation Web Access Remote NTP Configuration Configuring NTP parameters through the TimeVault web interface involves editing the values in the “ntp.conf” and “ntp.keys” files. You can do this from the Network Controls page (for details on configuring NTP using serial/Telnet commands, see page 4-69). See Appendix B for a thorough discussion about the use of NTP, with and without MD5 authentication. To configure NTP parameters over the Internet: 1.
Web Access Chapter 3: Remote Operation 5. Scroll down and click MD5 Keys. The NTP.Keys File window appears, containing the following default information: #Define your own keys and change them frequently. These keys #must match key IDs and values assigned in your NTP client #software setup. Note: to ensure maximum security, remember to #change the keys on a regular basis. Key values are a maximum of #32 characters. A maximum of 24 keys may be entered in this #file. #Example keys follow.
Chapter 3: Remote Operation Web Access Remote SNMP Configuration By default, SNMP is disabled. To use it, or to configure any other SNMP parameters, involves editing the values in the temp/ directory. The fastest and easiest way to do this is from the Network Controls page (for details on configuring SNMP using serial/Telnet commands, see page 4-72). See Appendix D for a thorough discussion about SNMP. To configure SNMP parameters through the TimeVault web interface: 1.
Web Access Chapter 3: Remote Operation 4. Click Submit Changes, located just below the display of parameter values. TimeVault takes a moment to reset, during which time the parameter display goes blank. When TimeVault starts up again, the new parameters are in place. If the unit does not reset, check the status message to see why, re-enter the values, then click Submit Changes again. 3.1.
Chapter 3: Remote Operation 3.2 Telnet Access Telnet Access TimeVault can perform setup and control operations sent from a remote location through the Internet. The protocol used for Internet access to TimeVault is Telnet, a standard Internet communications program, with an ASCII character-based interface, that is bundled with Windows 95/98/NT and connects to TimeVault’s NET Port.
Telnet Access Chapter 3: Remote Operation 4. Click Connect, the first item on the Telnet menu bar, then select Remote System. The Connect dialog box appears: 5. In the Host Name field, enter TimeVault’s IP Address. Do not change the text in the other two fields, which should read “Telnet” and “VT100”. 6. Click Connect to start a Telnet connection to TimeVault.
Chapter 3: Remote Operation 3.3 Serial Access Serial Access The RS-232 connector provides serial access. The RS-232 connector is located between the NET Port and the front panel display (see Figure 1-1 on page 1-7). This connector is labeled “Serial I/O”, and is referred to as the “Utility Port.” Table 3-1 below describes the Utility Port’s RS-232 pinouts and signal levels. Serial time output is not available on the Utility Port. Table 3-1: RS-232 Pinouts and Signal Levels TimeVault 3.3.
Serial Access 3.3.2 Chapter 3: Remote Operation HyperTerminal Starting HyperTerminal To start HyperTerminal: 1. Click Start on the task bar in the lower left corner of your screen. 2. Select Programs > Accessories > HyperTerminal > HyperTerminal. The Connection Description dialog box appears: 3. Enter a name (in this example, we have used “NTS”) for this connection in the Name box and click OK. The Connect To dialog box appears: 6000-100Ch3.fm Rev.
Chapter 3: Remote Operation Serial Access 4. In the Connect using box, use the drop-down menu to select your modem’s Com port (COM1 in this example), then click OK. The COM1 Properties dialog box appears, showing the Port Settings tab: 5. Edit the fields in the Port Settings dialog box as follows: Bits per second: 9600 Data Bits: 8 Parity: None Stop Bits: 1 Flow control: None 6. Click OK.
Serial Access Chapter 3: Remote Operation Setting Up a HyperTerminal Session To set up a HyperTerminal session: 1. From the File menu in the session window, select Properties. TimeVault’s Properties dialog box appears, showing the Connect To tab: 2. Select the Settings tab and click the Terminal keys radio button: 3. In the Emulation box, use the drop-down menu to select VT100 terminal type (do not select the Auto detect option). 6000-100Ch3.fm Rev.
Chapter 3: Remote Operation Serial Access 4. Click Terminal Setup and configure the terminal by selecting the appropriate options in the Terminal Settings dialog box (with a VT100 terminal, the recommended settings are pictured below): 5. Click OK. TimeVault’s Properties dialog box is reactivated. 6. In TimeVault’s Properties dialog box, click ASCII Setup… The ASCII Setup dialog box appears: 7.
Serial Access Chapter 3: Remote Operation 10. When exiting HyperTerminal, click Yes when prompted to save the current session: The next time you launch HyperTerminal from the Start menu, you can reconnect to the session you just created. Reconnecting to your last HyperTerminal session To reconnect to your last HyperTerminal session: 1. From the HyperTerminal window, select File > Open. 2. Double-click your last session: The name of your last session 6000-100Ch3.fm Rev.
Chapter 3: Remote Operation 3.4 Session Timers Session Timers There are timers on Utility Port, Telnet, and web control sessions that terminate them if there is a lack of activity. Any action you take during a session automatically resets the timer, and it starts all over again. The timers and their interactions are described below. 3.4.1 Utility Port Session Timer The Utility Port Session Timer starts upon receipt of a character from the Utility Port.
4 Serial or Telnet I/O Functions 4.1 Overview and Format Shortly after power-up, the utility port will be ready to receive commands. To ensure the unit receives data input accurately, wait until the message Searching for Satellites... has been on the front panel before entering any serial or Telnet commands. You can send data to, or request data from, the unit by sending serial or Telnet commands using ASCII character strings.
Chapter 4: Serial or Telnet I/O Functions Overview and Format The formats of the output strings are designed so that it is possible to request the state of a function and save the response string. Later that string can be sent to the unit to restore the original state of that function. Input strings sent to the unit may vary in length. The manual represents what you should type in the same fixed font, with a bold typeface.
Command List 4.2 Chapter 4: Serial or Telnet I/O Functions Command List The following table lists all serial/Telnet commands that are used to operate, administer, and maintain the unit. The Utility Port is ready to receive these commands once the power-up sequence is complete. The F100 series is used mainly to request or set unit NET Port parameters. Configuration of the IP Address, Subnet Mask, Default Gateway, and DHCP parameters is also available through the front panel keypad.
Chapter 4: Serial or Telnet I/O Functions Command List Additional F100 Extended Function commands are available for updating software, changing passwords, pinging remote units, and displaying UTC time in seconds.
Command List Chapter 4: Serial or Telnet I/O Functions Function commands and unit responses contain common elements which are defined in the following table: Table 4-3: Definitions of Common Elements in Serial Commands and Responses Element ± 6000-100Ch4.fm Rev.
Chapter 4: Serial or Telnet I/O Functions Function Commands 4.3 Function Commands 4.3.1 F03 – Time and Date Request Use Function F03 to request time and date. The response is UTC date and time. To request TIME AND DATE, send the following command: F03 The unit responds: F03/- /:: where F 03 /
- : ; 4.3.
Function Commands 4.3.3 Chapter 4: Serial or Telnet I/O Functions F36 – NET Port Network Configuration Entry/Request Use Function F36 to request or set network parameters. Changes require the unit to reset. F36 commands are for backward compatibility and are identical to the F100 function command series used for the same purpose (see the sections starting on page 4-59). F36 commands are for backward compatibility with previous Symmetricom products.
Chapter 4: Serial or Telnet I/O Functions 4.3.5 Function Commands F60 – Satellite List Request Use Function 60 to list current satellites and to see the relative signal strength of satellites the unit is tracking. Signal strength is given in units in the range of 0 to +25. The unit monitors five variables: the prn number, good/bad, enabled/disabled, tracked, and current.
Function Commands Chapter 4: Serial or Telnet I/O Functions You can see from the sample list below that “enabled”, “good”, and “tracked” satellites are “current”. That means that the unit does not use any satellite with questionable communication to calculate time, even if that satellite is enabled, visible and being tracked.
Chapter 4: Serial or Telnet I/O Functions 4.3.6 Function Commands F67 – Leap Second Information Use Function 67 to retrieve information regarding upcoming leap seconds. This is satellite information and cannot be changed through the unit. Although UTC leap second adjustments may be performed on four occasions annually, in practice they are only performed twice: June 30th and December 31st.
Extended Function Commands 4.4 Chapter 4: Serial or Telnet I/O Functions Extended Function Commands The F100 command series is known collectively as Extended Function Commands. With certain F100 commands, you can reconfigure network parameters, such as IP Address, or modify function settings like Remote Lockout. The main commands include F100 BASET, IP / SM / G / CONFIG (“set” commands) / DHCP, LOCK, UNLOCK and L.
Chapter 4: Serial or Telnet I/O Functions 4.4.1 Extended Function Commands F100 BASET – 100 BASE-T/10 BASE-T Control Use the BASET command to query the current Base-T setting. If you set the unit to 10Base-T, it operates only at that speed. If you set the unit to 100Base-T, it negotiates between 10/100Base-T. This does not necessarily mean the unit will connect at 100Base-T, but will connect at the fastest possible speed. Any change to the current Base-T setting causes the unit to reset.
Extended Function Commands 4.4.2 Chapter 4: Serial or Telnet I/O Functions F100 DHCP – DHCP Control Use F100 DHCP to enable or disable Dynamic Host Configuration Protocol. DHCP allows the unit to auto-configure its network address, provided that you have enabled DHCP, and that the unit is installed on, and connected to at power-up, an Ethernet LAN with a DHCP server. If these conditions are not met, the unit reverts to those network parameters in use at the last power-down.
Chapter 4: Serial or Telnet I/O Functions 4.4.3 Extended Function Commands F100 EA – Ethernet Address The Ethernet address is assigned at the factory. It is a fixed, six-byte, hexadecimal value specific to the unit NET Port. The first three bytes are registered to Symmetricom Inc.; the last three bytes are the hex value identifying the NET Port.
Extended Function Commands 4.4.5 Chapter 4: Serial or Telnet I/O Functions F100 SM – Subnet Mask To return the subnet mask of the NET Port, send the following command: F100 SM The unit responds: F100 SM:nnn.nnn.nnn.nnn An example of the response is: F100 SM:255.255.255.125 Changing the Subnet Mask requires the unit to reset. A verification prompt appears prior to execution. To set the subnet mask and restart the unit, send the following command: F100 SM:nnn.nnn.nnn.
Chapter 4: Serial or Telnet I/O Functions 4.4.7 Extended Function Commands F100 IC – NET Port Network Configuration Entry/Request To review the entire NET Port network configuration, send the following command: F100IC An example of the response is: F100 IP:206.54.0.21 SM:255.255.255.240 G:206.54.0.17N:E where N:E denotes Ethernet DIX. 4.4.
Extended Function Commands Chapter 4: Serial or Telnet I/O Functions change the user name and password to whatever you want. Then you can go back into normal mode the and the user name and password you just set will work. 4.4.9 F100 ST – Self Test Status Use Self Test Status to query the status of the power-up tests. The response contains the PASS/FAIL status of the flash memory checksum test, RAM test, Utility Port test, and version check.
Chapter 4: Serial or Telnet I/O Functions 4.4.10 Extended Function Commands F100 VER – Software Version Request Use Version Request to obtain the software version number of the unit. The version number is set at compile time, and cannot be changed. It may only be queried.
Extended Function Commands 4.4.12 Chapter 4: Serial or Telnet I/O Functions F100 CONFIG – FTP Configuration of NTP, SNMP & ACTS Parameters Although you can change the NTP, SNMP and ACTS parameters contained in the temp/ directory through FTP and a text editor, it is much faster and easier to do this over the Internet (see “Web Access” on page 3-31 for details). For more information about NTP and NTP broadcast mode, see Appendix A and Appendix B. For details on SNMP, see Appendix D.
Chapter 4: Serial or Telnet I/O Functions Extended Function Commands Use a “get” command to retrieve data from the unit and have it delivered, through the FTP software, to a specified directory on your C drive. You must use the UNIX format with forward slashes to specify your IP address and the target directory. The FTP software delivers the data in a configuration file. Once this file is in the directory, use any text editor to modify it.
Extended Function Commands Chapter 4: Serial or Telnet I/O Functions Configuration of NTP Parameters Using FTP To configure NTP parameters using FTP and a text editor, follow the steps outlined below. However, it is much faster and easier to do this over the Internet (see “Remote Configuration.” on page 3-34). During this process, the FTP software creates default configuration files (“ntp.conf” and “ntp.keys”) in your directory to hold the data you have requested. Do not change the names of these files.
Chapter 4: Serial or Telnet I/O Functions Extended Function Commands The line below lists the currently trusted keys. See the NTP keys file for the actual keys and their corresponding key numbers. Keys 1 and 2 are listed as an example. All keys listed must appear in the NTP keys file. Note= to ensure maximum security, remember to change the keys on a regular basis. A maximum of 20 trusted keys can be defined on this line. trustedkey 1 2 2. Edit the data in the “ntp.
Extended Function Commands Chapter 4: Serial or Telnet I/O Functions The NTP client “ntp.keys” file is identical to the one on the NTP server. For the specific keys used by the NTP server, the NTP client must have the identical line in its version of the file. You’ll want to use your own hard-to-guess key names, using random letters. The critical lines of the “ntp.keys” file are: Id ---1 2 M Value --- -------M Symmetricom M xyz123 where 1 and 2 are key identifiers.
Chapter 4: Serial or Telnet I/O Functions Extended Function Commands Configuration of SNMP Parameters Using FTP By default, SNMP is disabled. To use it, or to configure any other SNMP parameter using FTP and a text editor, follow the steps outlined below. However, it is much faster and easier to do this remotely, using the web interface (see “Remote SNMP Configuration” on page 3-38). During this process, the FTP software creates a default configuration file (“snmp.
Extended Function Commands Chapter 4: Serial or Telnet I/O Functions where: MIB = for future use only GenTraps = switches on/off all traps sysContact, sysName, and sysLocation = standard MIB II variables for system name, location, and contact personnel NAME, VIND, TRAP (yes/no), ACCESS (read/write), and IP address = configurable SNMP community variables 2.
Chapter 4: Serial or Telnet I/O Functions Extended Function Commands Configuration of ACTS Parameters Using FTP To configure ACTS parameters using FTP and a text editor, follow the steps outlined below. However, it is much faster and easier to do this using the TimeVault web interface (see “Remote ACTS Configuration” on page 3-34). During FTP configuration, the FTP software creates a default configuration file (“acts.conf”) in your directory to hold the data you have requested.
Extended Function Commands Chapter 4: Serial or Telnet I/O Functions timeout = duration = delay period flag speed = = = = fudge pollcounter = = center = modemInit = after sending a command to the modem, the time interval, in seconds, that TimeVault waits for a modem response before timing out duration, in seconds, of a single ACTS session, starting after the modem detects a carrier reserved for factory calibration only; do not change time interval, in minutes, between call attempts set to ON b
Chapter 4: Serial or Telnet I/O Functions 4.4.13 Extended Function Commands F100 LOCK – Remote Lockout Use Remote Lockout to disable remote control capability and secure the unit from Telnet access. You can issue this command from Telnet or the serial port, or from the front panel. The default setting is “Unlocked”.
Extended Function Commands Chapter 4: Serial or Telnet I/O Functions Important Note: The following commands related to sofware upgrades (F100 J, BH, BU, BUB, BF and K I L L) are not the normal commands used for uploading firmware. Symmetricom provides these commands for flexibility in supporting special case situations. Normal firmware upgrades use an easy-to-use upgrade program provided with the firmware. 4.4.
Chapter 4: Serial or Telnet I/O Functions Extended Function Commands To write the file to the flash, send the F100 BH command with the FTP host, file path and name, and then send the following command: F100 BU The unit responds: Are you sure? (y/N) If you answer “y” and press Enter, the unit executes the command.
Extended Function Commands 4.4.18 Chapter 4: Serial or Telnet I/O Functions F100 BUB - Burn BootLoader Use Burn BootLoader when upgrading software, to write the BootLoader to flash memory. To write the BootLoader to the flash, send the F100 BH command with the FTP host, file path and name, and then send the following command: F100 BUB The unit responds: Are you sure? (y/N) If you answer “y” and press Enter, the unit executes the command.
Chapter 4: Serial or Telnet I/O Functions Extended Function Commands Unit example execution: Burning file 182-9005v003.fs with size 524288 Sec: 20 Sec: 21 Sec: 22 Sec: 23 Sec: 24 Sec: 25 Sec: 26 Sec: 27 Sec: 28 4.4.20 F100 K I L L - Reboot Use K I L L after upgrading software, to reboot the unit. K I L L is a case-sensitive command. When entering this command, use all capital letters. You also must put spaces between each letter.
Extended Function Commands 4.4.21 Chapter 4: Serial or Telnet I/O Functions F100 BL - Burn Host Lock Request Use Burn Host Lock to display whether or not software upgrades via serial or Telnet connections can be performed in the normal mode. To display the burn host lock state, send the following command: F100 BL An example unit response: BURN_DISABLE_BIT = 0 If the lock is set to 1, upgrading is not possible via serial or Telnet connections in the normal mode (the burn host lock has been set).
Chapter 4: Serial or Telnet I/O Functions Extended Function Commands As a safety feature, after sending this command, you have 10 seconds to respond affirmatively (enter the letter “y”) to the confirmation prompt, after which the unit executes the command and resets. Within that 10 second time period, any other response, including no response, results in the unit canceling the command.
Extended Function Commands Chapter 4: Serial or Telnet I/O Functions When you enter a new user name, the unit responds with: Confirm new user name: Enter the same new user name again, to confirm the spelling. If the same new user name has been entered twice, the TimeVault responds with: User name change for xyz123 successfully changed In this case, the new user name will be used for the next Telnet login.
Chapter 4: Serial or Telnet I/O Functions 4.4.28 Extended Function Commands F100 PLS - Password Lock Set Use Password Lock Set to lockout setting of passwords via Telnet. To inhibit password changes, send the following command: F100 PLS The unit responds: Are you sure? (y/N) If you answer “y” and press Enter, the unit executes the command.
Extended Function Commands 4.4.31 Chapter 4: Serial or Telnet I/O Functions F100 PE ADD - Peer Add Use Peer Add to temporarily add an NTP peer node to be polled. After logging out, when you log back in the original peer settings will be active. To add a peer, send the following command: F100 PE ADD For example: F100 PE ADD 206.254.000.021 4.4.32 F100 PE REM - Peer Remove Use Peer Remove to temporarily remove an NTP peer node from the polling list.
Chapter 4: Serial or Telnet I/O Functions 4.5 Login/Logout Login/Logout There are two levels of login: “operator” and “guest”. 4.5.1 Operator Login Use the Operator login to run function requests and entries, change settings and perform software updates. As shipped, and whenever the unit is started in BootLoader Mode, you can access the Operator level with: • User Name: operator • Password: mercury To maintain security, change the Operator password at installation.
5 TimeVault-Generated Messages 5.1 Error Messages 5.1.1 ERROR 01 VALUE OUT OF RANGE Meaning: You have entered a valid command, with an invalid parameter value. Recovery Action: Re-enter the command, using a valid parameter. 5.1.2 ERROR 02 SYNTAX Meaning: You have entered a valid command with a minor syntax error. The NET Port network interface software has detected the error. Recovery Action: Re-enter the command, using valid syntax. 5.1.
Chapter 5: TimeVault-Generated Messages 5.1.6 Error Messages ERROR: Action (get or set) is not specified Meaning: You have omitted the “get” or “set” parameter from the F100 NTP Configuration command. Recovery Action: Re-enter the command, specifying the desired action. 5.1.7 ERROR: Can’t open source file Meaning: The file containing the needed data is unavailable. Recovery Action: Check file location and directory names to verify the path is accurate, then re-enter the command. 5.1.
LED System Status Alerts Chapter 5: TimeVault-Generated Messages 5.2 LED System Status Alerts 5.2.1 Solid Red/Solid Orange Meaning: Solid Red means there is no signal from the time sources, or that a major alarm fault has been detected. Solid Orange means that TimeVault is in backup timing mode; synchronization has not been lost, but the unit is using NTP to synchronize time.
Chapter 5: TimeVault-Generated Messages 5.3.6 Restarting the Unit Please wait… Meaning: 5.3.7 Command accepted and processed as specified. Goodbye. Meaning: 5-90 You have just successfully entered the Disable DHCP command. OK Meaning: 5.3.10 You have just successfully entered the Enable DHCP command. DHCP is disabled Meaning: 5.3.9 A command has just been executed that requires a soft restart of TimeVault. The restart happens immediately after this message is sent.
A NTP Version 3, NTPQ, and NTPDC This appendix describes two NTP version 3 data formats: • NTP version 3, per RFC-1305 • SNTP version 3, per RFC-2030 and query programs NTPQ and NTPDC. TimeVault fully supports NTP version 4, (backwards compatible with NTP version 2, RFC-1119, and version 3, RFC-1305), and SNTP as per RFC 2030.
Appendix A: NTP Version 3, NTPQ, and NTPDC Leap Indicator Version Number NTP V 3.
NTP V 3.0 Data Format per RFC-1305 Appendix A: NTP Version 3, NTPQ, and NTPDC Stratum The stratum is an eight bit integer providing the stratum level of the time source. TimeVault operates in stratum 1, denoting a primary reference. Poll Interval The poll interval is a signed eight bit integer used as the exponent of two to yield in seconds the minimum interval between consecutive messages. For example, a poll interval value of six implies a minimum interval of 64 seconds.
Appendix A: NTP Version 3, NTPQ, and NTPDC NTP V 3.0 Data Format per RFC-1305 Table A-2 Local Time Source Input Local Time Source Input Reference Identifier String GPS "GPS" ACTS "ACTS" NTP "NTP" Reference Timestamp The reference timestamp is a 64 bit timestamp format representing the local time at the last update. TimeVault’s reference timestamp is the last time that a valid synchronization source signal was present.
SNTP V 3.0 Data Format per RFC-2030 A.2 Appendix A: NTP Version 3, NTPQ, and NTPDC SNTP V 3.0 Data Format per RFC-2030 When TimeVault replies to requests from SNTP clients, the packet format is the same as the NTP packet format described above, with the following differences: • Leap Indicator TimeVault sets these 2 bits to either 0 (normal) or 3 (unsynchronized) only • Version Number TimeVault copies this field from the client request packet and returns it in this field.
Appendix A: NTP Version 3, NTPQ, and NTPDC A.3 Cross Check Functionality with NTPQ and NTPDC Cross Check Functionality with NTPQ and NTPDC Note: A number of NTP-related programs, such as NTPDC and NTPQ, are not supported, in the conventional sense, by Dr. Mills’ NTP, and therefore cannot be supported by Symmetricom, Inc. (TrueTime, Inc. is now Symmetricom, Inc.) The user of these programs does so at his or her own risk.
Cross Check Functionality with NTPQ and NTPDC Appendix A: NTP Version 3, NTPQ, and NTPDC • NTPDC: http://www.eecis.udel.edu/~ntp/ntp_spool/html/ntpdc.htm, http://hoth.stsci.edu/man/man1M/ntpdc.html and • http://www.unix.digital.com/faqs/publications/base_doc/DOCUMENTATION/V40F_HTML/MAN/M AN8/0218____.HTM. 6000-100AppA.fm Rev.
Appendix A: NTP Version 3, NTPQ, and NTPDC A-98 Cross Check Functionality with NTPQ and NTPDC TimeVault™ User’s Manual 6000-100AppA.fm Rev.
B MD5 Authentication and NTP Broadcast Mode B.1 Introduction to MD5 MD5 is a security protocol that can be used to authenticate NTP client-server communications, ensuring that a received NTP time packet is free from tampering. For example, if the server receives an NTP request packet with the wrong MD5 key (i.e., a key that hasn’t been configured by the user in TimeVault), then the server ignores the request. A similar mechanism exists on the client side.
Appendix B: MD5 Authentication and NTP Broadcast Mode Introduction to MD5 The MD5 message digest is 16 bytes in length and it follows the key identifier in the signature. A server authenticates the NTP packet from a client by first looking up the key by reference to the key identifier. It then generates the MD5 message digest based on the key and the NTP data and compares the resulting message digest to the client packet’s MD5 message digest.
NTP Broadcast Mode with MD5 Authentication B.2 Appendix B: MD5 Authentication and NTP Broadcast Mode NTP Broadcast Mode with MD5 Authentication An NTP broadcast timeserver with an NTP broadcast time client can be used for NTP version 4 with authentication. The MD5 authentication protocol is optionally available for NTP versions 3 and 4. When a packet is received by NTP, it checks the key identification number in the packet against the private key in the “ntp.
Appendix B: MD5 Authentication and NTP Broadcast Mode B.3 NTP Broadcast Mode without Authentication NTP Broadcast Mode without Authentication Authentication was configured off by default for NTP version 3, but is configured on by default for version 4. This means that NTP version 4 must use authentication, like MD5, for broadcast time to work. To have it otherwise, you must specifically turn authentication off in the “ntp.conf” file of the NTP time client.
NTP Broadcast Mode without Authentication B.3.2 Appendix B: MD5 Authentication and NTP Broadcast Mode Configuration of NTP on the Time Client Authentication status is critical on the time client. If MD5 is not used, authentication must be off for broadcast mode to work. Here is a sample “ntp.conf” file used in the time client, plus a sample command line of the NTP program invocation: server 192.168.1.49 server 206.54.0.20 server 206.54.0.
C TIME and DAYTIME Protocols C.1 TIME Protocol as per RFC-868 TIME protocol provides a site-independent, machine readable date and time. The TIME service sends back to the originating source the UTC time in seconds since midnight on January 1, 1900. This protocol may be used either above the Transmission Control Protocol (TCP) or above the User Datagram Protocol (UDP). When used via UDP, the TIME service works as follows: Server:Listen on port 37 (45 octal). Client:Send an empty datagram to port 37.
Appendix C: TIME and DAYTIME Protocols C.2 DAYTIME Protocol as per RFC-867 DAYTIME Protocol as per RFC-867 DAYTIME protocol pertains to a daytime service, a useful debugging and measurement tool. A daytime service simply sends the current date and time as a character string without regard to the input. C.2.1 TCP Based Daytime Service This daytime service is defined as a connection based application on TCP. A server listens for TCP connections on TCP port 13.
D SNMP – Simple Network Management Protocol D.1 About SNMP SNMP management software allows a network user to remotely monitor and configure an IP host that supports an SNMP agent. An SNMP agent is protected from unauthorized use through a security scheme. TimeVault supports a SNMP version 1 agent with the MIB II and Enterprise MIB databases. The material in this section assumes you already have an understanding of SNMP.
Appendix D: SNMP – Simple Network Management Protocol D.2 Symmetricom SNMP Configuration Symmetricom SNMP Configuration SNMP offers a security authentication scheme that is based on a common password shared by the management station and a group of agents. A group of hosts are known as a community. Any management station or agent can be a member of any combination of communities.
Symmetricom SNMP Configuration Appendix D: SNMP – Simple Network Management Protocol Table D-2 and Table D-3 define SNMP configurable parameters that are applied globally to all SNMP communities (this menu appears after the last community menu), and the Symmetricom SNMP factory default settings. Table D-2: SNMP Community Global Parameters KeyWord Definition SNMP Global Enable Traps When set to yes, all authentication failure traps are disabled.
Appendix D: SNMP – Simple Network Management Protocol SNMP Global Enable Traps Serial or Telnet Configuration Yes The factory default settings are summarized as follows: community one is called public and is set to read-only access for the SNMP MIB; community two is named system and it has normal access to the SNMP database; all other communities are disabled. All traps are disabled.
Symmetricom SNMP Enterprise MIB Appendix D: SNMP – Simple Network Management Protocol The trap message group holds the ASCII string data to send whenever an SNMP trap message is transmitted. The NTS agent sends SNMP trap messages to SNMP management hosts notifying them of some critical event at the NTS agent. The NTS issues three types of trap messages. The first type is a cold start trap message indicating when the box boots or re-initializes.
Appendix D: SNMP – Simple Network Management Protocol Symmetricom SNMP Enterprise MIB TrueTime DEFINITIONS ::= BEGIN IMPORTS MODULE-IDENTITY, OBJECT-TYPE, Integer32 FROM SNMPv2-SMI CounterFROM RFC1155-SMI DisplayStringFROM SNMPv2-TC TRAP-TYPEFROM RFC-1215; --iso org dod internet private enterprises trueTimeEnt OBJECT IDENTIFIER ::= { 1 } OBJECT IDENTIFIER ::= { iso 3 } OBJECT IDENTIFIER ::= { org 6 } OBJECT IDENTIFIER ::= { dod 1 } OBJECT IDENTIFIER ::= { internet 4 } OBJECT IDENTIFIER ::= { private 1 }
Symmetricom SNMP Enterprise MIB Appendix D: SNMP – Simple Network Management Protocol trapMsgSnmpAuthFail OBJECT-TYPE SYNTAX DisplayString (SIZE (0..255)) MAX-ACCESS read-only STATUS current DESCRIPTION “This is an ASCII string sent to UDP port 162 (or user defined) when the TrueTime time server determines the SNMP authentication for a SNMP PDU is in correct. The message is ‘SNMP Authentication Failure Trap PDU from: ###.###.###.###’. Where ###.###.###.
Appendix D: SNMP – Simple Network Management Protocol Symmetricom SNMP Enterprise MIB trapMsgCrossCheckAlarm OBJECT-TYPE SYNTAX DisplayString (SIZE (0..255)) MAX-ACCESS read-only STATUS current DESCRIPTION “This is an ASCII string sent to UDP trap port (162 or user defined) when the TrueTime time server’s detects an offset in time equal to, or greater than, one second from the cross check server and itself and the server is not otherwise in a system alarm condition.
Symmetricom SNMP Enterprise MIB Appendix D: SNMP – Simple Network Management Protocol ntpDesiredAcc OBJECT-TYPE SYNTAX INTEGER (0..2147483647) MAX-ACCESS read-only STATUS current DESCRIPTION “The desired (worst case time) accuracy in microseconds that the time server will attempt to steer to. This variable is related to ntpEstError. Should ntpEstError be greater than ntpDesiredAcc, the NTP alarm condition will be set (ntpSysLeap will be equal to 3).
Appendix D: SNMP – Simple Network Management Protocol Symmetricom SNMP Enterprise MIB ntpSysHostMode OBJECT-TYPE SYNTAX INTEGER { hostModeIsReserved0 (0), hostModeIsSymmetricActive (1), hostModeIsSymmetricPassive (2), hostModeIsClient (3), hostModeIsServer (4), hostModeIsBroadcast (5), hostModeIsReserved6 (6), hostModeIsReserved7 (7) } MAX-ACCESS read-only STATUS current DESCRIPTION “The value of this variable indicates the mode that the host is operating in.
Symmetricom SNMP Enterprise MIB Appendix D: SNMP – Simple Network Management Protocol ntpSysRootDelay OBJECT-TYPE SYNTAX Counter MAX-ACCESS read-only STATUS current DESCRIPTION “This is a raw 32 bit number representing a signed fixed point 32-bit number indicating the total round-trip delay to the primary synchronization clock source in seconds with the fraction point between bits 15 and 16. Note that this variable can take on both positive and negative values, depending on clock precision and skew.
Appendix D: SNMP – Simple Network Management Protocol Symmetricom SNMP Enterprise MIB Note, for TrueTime time servers only GPS, ACTS and IRIG are presently used. Further, a primary time server’s outgoing NTP packet will have its reference identifier field set to ntpSysRefClockIdent.” ::= { ntp 14 } ntpControlInput OBJECT-TYPE SYNTAX DisplayString (SIZE (0..255)) MAX-ACCESS read-write STATUS current DESCRIPTION “This variable emulates TrueTime’s serial function command strings.
Symmetricom SNMP Enterprise MIB Appendix D: SNMP – Simple Network Management Protocol gpsNumCurrentSats OBJECT-TYPE SYNTAX INTEGER (0..8) MAX-ACCESS read-only STATUS current DESCRIPTION “Current number of GPS satellites used in position and time fix calculations. The number of satellites available depends on how long the time server has been up, the time of day and the total amount of clear sky as seen from the GPS antenna.
Appendix D: SNMP – Simple Network Management Protocol Symmetricom SNMP Enterprise MIB gpsLongitude OBJECT-TYPE SYNTAX INTEGER (-2147483647..2147483647) MAX-ACCESS read-only STATUS current DESCRIPTION “Longitude location of GPS antenna where: +2147483647 is maximum east longitude, -2147483647 is maximum west longitude and 0 is Greenwich England. To calculate the longitude in radians use the following formula (gpsLongitude * PI) / ((2^31)-1) = longitude in radians.
Symmetricom SNMP Enterprise MIB Appendix D: SNMP – Simple Network Management Protocol actsBaudRate OBJECT-TYPE SYNTAX INTEGER { baud300 (300), baud1200 (1200), baud9600 (9600), } MAX-ACCESS read-only STATUS current DESCRIPTION “Indicates the baud rate setting for the ACTS modem. The ACTS dial-up service accepts 300 or 1200 baud. Note: this is a rare case where faster is not better and 300 baud yields the best time accuracy.” ::= { acts 2 } actsFailRedial OBJECT-TYPE SYNTAX INTEGER (0..
Appendix D: SNMP – Simple Network Management Protocol Symmetricom SNMP Enterprise MIB actsGoodCalls OBJECT-TYPE SYNTAX Counter MAX-ACCESS read-only STATUS current DESCRIPTION “Number of times the time server called the ACTS dial-up service and successfully received the time.” ::= { acts 7 } actsBadCalls OBJECT-TYPE SYNTAX Counter MAX-ACCESS read-only STATUS current DESCRIPTION “Number of times the time server called the ACTS dial-up service and something was not right.
Symmetricom SNMP Enterprise MIB Appendix D: SNMP – Simple Network Management Protocol actsNoAnswer OBJECT-TYPE SYNTAX Counter MAX-ACCESS read-only STATUS current DESCRIPTION “The remote ACTS mode did not answer the call.” ::= { acts 13 } actsBadReply OBJECT-TYPE SYNTAX Counter MAX-ACCESS read-only STATUS current DESCRIPTION “The syntax of the reply from remote modem was incorrect, possibly due to line noise.
E Automated Computer Time Service (ACTS) The Automated Computer Time Service (ACTS) is run by the National Institute of Standards and Technology (NIST) in Boulder, Colorado. ACTS allows computer users with modems to synchronize their clocks by telephone. The phone number for ACTS is (303) 494-4774 (not toll free). Users can connect at speeds of up to 9600 baud with 8 data bits, 1 stop bit, and no parity and obtain time signals with standard uncertainty of 5 ms.
Appendix E: Automated Computer Time Service (ACTS) L = DUT1 = msADV = UTC(NIST) = OTM = the number changes from 50 to the actual number of days until the time change. It will decrement by “1” every day, and reach “0” the day the change occurs. a one-digit code that indicates whether a leap second will be added or subtracted at midnight on the last day of the current month. If the code is “0”, no leap second will occur this month.
F Non-Standard Features This appendix contains information on optional features that may have been added to your device at the factory. For a standard device, it is normal for this appendix to be empty. 6000-100AppE.fm Rev.
Index Numerics 10Base-T/100Base-T 8, 16, 60 Control Command (F100 BASET) 60 Editing MD5 Keys 70–71 with Authentication 70–71, 101 without Authentication 102–103 Browser 32 Addresses 91, 100, 107 See also, Web A AC Model Cabling 15 Power Specifications 5 Access 2, 40, 108 HTTP 31 Internet 40–41 Remote Control Lockout (F100 LOCK) 26 Remote Lockout (F100 LOCK) 76 Serial 42–47 Web 31 Accuracy 6 Acquisition 13 ACT (Connection Speed Indicator LED) 7 ACTS 17 Configuration Using FTP 74–75 Explanation of Full Time
NTP 91 Data Rates 8–9, 42 Datagram 105 Date 2 DAYTIME Protocol 6, 106 DC Model (-48 VDC) Cabling 15 Power Specifications 5 Default Gateway (F100 G) 63 Delay 92–93 Denial of Service Attack 22 DHCP 6, 8, 90 Command (F100 DHCP) 61 Start-Up Display 25 Display 7, 42 Default Display 21 Power-Up Sequence 17 Display Security 24–27 Automatic Time Out 27 Logout 27 Distance 92 Down/Up Converter 3, 13 DTR 42 E Enabled Satellite 56 Enterprise MIB 29, 107, 110 Environmental Specifications 4 Error Messages 87 Ethernet 2,
I IEEE 8 Informational Messages 89 Initialization 17 Installation 11 Interface Specifications 8 Internal Timing Performance Specifications 5 Internet Access through Telnet 40–41 Configuration ACTS 34 NTP 36 Protocol 31 IP Address 62 K Keypad 7, 51 Operation 24 L LCD 23 Leap Indicator 92 Leap Second 58, 92 Command (F67) 58 LED 7 Local Time Source Precision 93 Location 2, 31–32 Lock Display Request (F100 L) 76 Login 39–40, 64, 83 Serial/Telnet Interface Passwords 86 Telnet, During Set-Up 41 Logout 86 Securi
P Packet 6 Parameters Network Configuration, Initial 28–29 Password Changing 86 Web Interface 33 Default Serial/Telnet Interface 41 Web Interface 33 Protection 24–27 Size 64 PDU 108 Physical Specifications 3 Position 1, 18, 31, 89 Power Specifications 5 Precision 92–93 PRN Number for Satellite 56 Procomm 40 Protocols, List of Supported 6 R Rack Mounting Instructions 11 RAM 65 test status (F100 ST) 65 Receiver 13 Reference Timestamp 94 Remote Control Lockout (F100 LOCK) 76 Remote Control/Configuration Locko
Synchronization 2, 5–6 Modes 17–19 Synchronization Source Operating Criteria (Chart) 20 T TCP 6, 105–106 TCP/IP 2, 8, 31, 110 Telnet 2, 6, 8, 31, 33 Commands and Responses, Common Elements 53 List 51–52 Semicolon used as replacement 50 Default Password 41 Interface, Login Passwords 86 Internet Access 40–41 Login, During Set-Up 41 Logout 86 Remote Control Lockout (F100 LOCK) 26 Session Timer 40, 48 Temperature 4–5 Terminal 12, 41–42 Terminal Strip DC Model (-48 VDC) 15 Test Status (F100 ST) RAM test 65 Time
