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Server Time Protocol Implementation Guide

Book Description

Server Time Protocol (STP) is a server-wide facility that is implemented in the Licensed Internal Code (LIC) of IBM® zEnterprise EC12 (zEC12), IBM zEnterprise 196 (z196), IBM zEnterprise 114 (z114), IBM System z10®, and IBM System z9®. It provides improved time synchronization in both a sysplex or non-sysplex configuration.

This IBM Redbooks® publication will help you configure a Mixed Coordinated Timing Network (CTN) or an STP-only CTN. It is intended for technical support personnel requiring information about:

-Installing and configuring a Coordinated Timing Network
-Using STP functions and operations
-Migrating to a Coordinated Timing Network from various timing environments

Readers are expected to be familiar with IBM System z technology and terminology. For planning information, see our companion book, Server Time Protocol Planning Guide, SG24-7280. For information about how to recover your STP environment functionality, see the Server Time Protocol Recovery Guide, SG24-7380.

Table of Contents

  1. Front cover
  2. Notices
    1. Trademarks
  3. Preface
    1. Authors
    2. Now you can become a published author, too!
    3. Comments welcome
    4. Stay connected to IBM Redbooks
  4. Summary of changes
    1. June 2013, Fourth Edition
  5. Part 1 Setting up the Coordinated Timing Network
    1. Chapter 1. Configuring an External Time Source
      1. 1.1 External Time Source
        1. 1.1.1 ETS configuration considerations
        2. 1.1.2 Dialing out to a telephone time service
      2. 1.2 Configuring an NTP server
        1. 1.2.1 NTP authentication support
        2. 1.2.2 Configuring an NTP server on the HMC
        3. 1.2.3 Configuring HMC as an NTP server
        4. 1.2.4 Removing an NTP server from the HMC
        5. 1.2.5 Configuring an NTP server on the PTS/CTS or BTS
      3. 1.3 Configuring an NTP server with pulse per second option
      4. 1.4 Configuring dial out on the HMC
        1. 1.4.1 HMC setup for ETS dial-out configuration
        2. 1.4.2 Configuring to use dial out as External Time Source
        3. 1.4.3 Configuring the ETS dial-out schedule
      5. 1.5 Migrating an External Time Source
        1. 1.5.1 Migration from no ETS configuration to either NTP, or NTP with PPS
        2. 1.5.2 Migration from a dial-out configuration to either NTP, or NTP with PPS
    2. Chapter 2. Migrating from ETR to STP-only CTN
      1. 2.1 Overview
      2. 2.2 Configuring the CTN ID
        1. 2.2.1 Setting the STP network ID
        2. 2.2.2 Configuring other servers
      3. 2.3 Changing the server timing mode
      4. 2.4 Adding a new server in STP timing mode
      5. 2.5 Migrating from Mixed CTN to an STP-only CTN
        1. 2.5.1 Assigning CTN roles
        2. 2.5.2 Time-zone offset adjustment
    3. Chapter 3. Configuring an STP-only CTN
      1. 3.1 Overview
      2. 3.2 Setting the CTN ID
      3. 3.3 Initializing the time
        1. 3.3.1 Setting the leap seconds
        2. 3.3.2 Setting the time zone
        3. 3.3.3 Setting the date and time
      4. 3.4 Assigning the CTN roles
        1. 3.4.1 Assigning the CTS and PTS
        2. 3.4.2 Assigning the BTS and the Arbiter
      5. 3.5 Adding a new server
      6. 3.6 Saving the STP configuration across PORs
        1. 3.6.1 Single-server CTN configuration
        2. 3.6.2 Two-server CTN saving its STP configuration across PORs
      7. 3.7 Case study: Configuring a single-server CTN
    4. Chapter 4. STP-only CTN: Adding a server in STP timing mode
      1. 4.1 Starting point
        1. 4.1.1 z/OS DISPLAY ETR command
        2. 4.1.2 z/OS DISPLAY XCF command
        3. 4.1.3 System (Sysplex) Time tabs
      2. 4.2 Adding the server
      3. 4.3 End point
        1. 4.3.1 z/OS DISPLAY ETR command
        2. 4.3.2 z/OS DISPLAY XCF command
        3. 4.3.3 System (Sysplex) Time tabs
  6. Part 2 CTN operations
    1. Chapter 5. Operations in an ETR and Mixed CTN
      1. 5.1 Minimum requirements
      2. 5.2 Monitoring the Mixed CTN using the HMC
        1. 5.2.1 Timing Network tab
        2. 5.2.2 Network Configuration tab
        3. 5.2.3 ETR Configuration tab
        4. 5.2.4 ETR Status tab
        5. 5.2.5 ETS configuration
      3. 5.3 Monitoring the Mixed CTN using z/OS commands
        1. 5.3.1 z/OS commands
        2. 5.3.2 Coupling facility commands
      4. 5.4 Configuring a Mixed CTN
        1. 5.4.1 CTN ID initialization
        2. 5.4.2 Time initialization
      5. 5.5 CTN configuration changes
        1. 5.5.1 Changing the CTN ID
        2. 5.5.2 Changing a server to STP timing mode
      6. 5.6 Time management
      7. 5.7 Local time changes
    2. Chapter 6. Operations in an STP-only CTN
      1. 6.1 Minimum requirements
      2. 6.2 Monitoring an STP-only CTN using the HMC
        1. 6.2.1 Timing Network tab
        2. 6.2.2 Network Configuration tab
        3. 6.2.3 ETR Configuration tab
        4. 6.2.4 ETR Status tab
        5. 6.2.5 STP Configuration tab
        6. 6.2.6 STP Status tab
        7. 6.2.7 ETS Configuration tab
      3. 6.3 Monitoring an STP-only CTN using z/OS commands
        1. 6.3.1 z/OS commands
        2. 6.3.2 Coupling facility commands
        3. 6.3.3 z/VM commands
      4. 6.4 Configuring an STP-only CTN
        1. 6.4.1 Support Element-to-NTP server connectivity
        2. 6.4.2 CTN ID initialization
        3. 6.4.3 Configuring an NTP server or an NTP server with PPS as the ETS
        4. 6.4.4 Time initialization
        5. 6.4.5 Completing time initialization
        6. 6.4.6 Defining server roles
      5. 6.5 CTN configuration changes
        1. 6.5.1 Changing the CTN ID
        2. 6.5.2 Changing the CTS
        3. 6.5.3 CTS reassignment and ETS considerations
        4. 6.5.4 Changing the server roles
      6. 6.6 Time management
        1. 6.6.1 Adding an ETS to an existing CTN
        2. 6.6.2 Time adjustment
        3. 6.6.3 Manual Time Adjustment through external time source
        4. 6.6.4 Scheduled time adjustment through External Time Source
        5. 6.6.5 STP offset adjustments
      7. 6.7 Local time changes
    3. Chapter 7. Operational considerations
      1. 7.1 Disruptive actions on the Current Time Server
        1. 7.1.1 Example of a disruptive action on the CTS: DEACTIVATE
        2. 7.1.2 Protection of the CTS: CTN ID change
      2. 7.2 Disruptive actions on the BTS or Arbiter
      3. 7.3 Last timing link validation
      4. 7.4 Restarting a CTN after a site power outage or CTS power-on reset
        1. 7.4.1 Initializing the time
        2. 7.4.2 Assigning the CTN roles
  7. Part 3 Migration scenarios
    1. Chapter 8. ETR Network to Mixed CTN (ETR timing mode)
      1. 8.1 Start point
        1. 8.1.1 z/OS DISPLAY ETR command
        2. 8.1.2 z/OS DISPLAY XCF command
        3. 8.1.3 System (Sysplex) Time tabs
      2. 8.2 Migration
        1. 8.2.1 Defining STP ID on SCZP201
        2. 8.2.2 Defining STP ID on SCZP101
      3. 8.3 End point
        1. 8.3.1 z/OS DISPLAY ETR command
        2. 8.3.2 z/OS DISPLAY XCF command
        3. 8.3.3 System (Sysplex) Time tabs
    2. Chapter 9. Mixed CTN (ETR timing mode) to ETR Network
      1. 9.1 Start point
        1. 9.1.1 z/OS DISPLAY ETR command
        2. 9.1.2 z/OS DISPLAY XCF command
        3. 9.1.3 System (Sysplex) Time tabs
      2. 9.2 Migration
        1. 9.2.1 Removing the STP ID on SCZP201
        2. 9.2.2 Removing the STP ID on SCZP101
      3. 9.3 End point
        1. 9.3.1 z/OS DISPLAY ETR command
        2. 9.3.2 z/OS DISPLAY XCF command
        3. 9.3.3 System (Sysplex) Time tabs Sample numbered list
    3. Chapter 10. Mixed CTN: Changing one server from ETR timing mode to STP timing mode
      1. 10.1 Start point
        1. 10.1.1 z/OS DISPLAY ETR command
        2. 10.1.2 z/OS DISPLAY XCF command
        3. 10.1.3 System (Sysplex) Time tabs
      2. 10.2 Migration
      3. 10.3 End point
        1. 10.3.1 z/OS DISPLAY ETR command
        2. 10.3.2 z/OS DISPLAY XCF command
        3. 10.3.3 System (Sysplex) Time tabs
    4. Chapter 11. Mixed CTN: Changing one server from STP timing mode to ETR timing mode
      1. 11.1 Start point
        1. 11.1.1 z/OS DISPLAY ETR command
        2. 11.1.2 z/OS DISPLAY XCF command
        3. 11.1.3 System (Sysplex) Time tabs
      2. 11.2 Migration
      3. 11.3 End point
        1. 11.3.1 z/OS DISPLAY ETR command
        2. 11.3.2 z/OS DISPLAY XCF command
        3. 11.3.3 System (Sysplex) Time tabs
    5. Chapter 12. Mixed CTN: Adding a server in STP timing mode
      1. 12.1 Start point
        1. 12.1.1 z/OS DISPLAY ETR command
        2. 12.1.2 z/OS DISPLAY XCF command
        3. 12.1.3 System (Sysplex) Time tabs
      2. 12.2 Migration
        1. 12.2.1 Defining the ETR Network ID on H40
        2. 12.2.2 Defining the STP ID on H40
      3. 12.3 End point
        1. 12.3.1 z/OS DISPLAY ETR command
        2. 12.3.2 z/OS DISPLAY XCF command
        3. 12.3.3 System (Sysplex) Time tabs
    6. Chapter 13. Mixed CTN (two servers) to STP-only CTN
      1. 13.1 Start point
        1. 13.1.1 z/OS DISPLAY ETR command
        2. 13.1.2 z/OS DISPLAY XCF command
        3. 13.1.3 System (Sysplex) Time tabs
      2. 13.2 Migration
      3. 13.3 End point
        1. 13.3.1 z/OS DISPLAY ETR command
        2. 13.3.2 z/OS DISPLAY XCF command
        3. 13.3.3 System (Sysplex) Time tabs
    7. Chapter 14. Mixed CTN (three servers) to STP-only CTN
      1. 14.1 Start point
        1. 14.1.1 z/OS DISPLAY ETR command
        2. 14.1.2 z/OS DISPLAY XCF command
        3. 14.1.3 System (Sysplex) Time tabs
      2. 14.2 Migration
      3. 14.3 End point
        1. 14.3.1 z/OS DISPLAY ETR command
        2. 14.3.2 z/OS DISPLAY XCF command
        3. 14.3.3 System (Sysplex) Time tabs
    8. Chapter 15. STP-only to Mixed CTN
      1. 15.1 Start point
        1. 15.1.1 z/OS DISPLAY ETR command
        2. 15.1.2 z/OS DISPLAY XCF command
        3. 15.1.3 System (Sysplex) Time tabs
      2. 15.2 Migration
        1. 15.2.1 Defining the ETR Network ID on SCZP201
        2. 15.2.2 STP-only CTN to Mixed CTN migration in progress
      3. 15.3 End point
        1. 15.3.1 z/OS DISPLAY ETR command
        2. 15.3.2 z/OS DISPLAY XCF command
        3. 15.3.3 System (Sysplex) Time tabs
  8. Part 4 Appendixes
    1. Appendix A. POR of a server in an STP-only CTN
      1. Procedure 1: POR of the server in a single-server STP-only CTN
      2. Procedure 2: POR of a server in a two-server STP-only CTN
      3. Procedure 3: POR of a server in a three or more-server STP-only CTN
      4. Procedure 4: POR of both servers in a two-server STP-only CTN
      5. Procedure 5: POR of all servers in a three or more-server STP-only CTN
    2. Appendix B. How to draw a CTN topology
      1. Introduction
      2. Sketching the diagram
  9. Related publications
    1. IBM Redbooks publications
    2. Other publications
    3. Online resources
    4. How to get Redbooks publications
    5. Help from IBM
  10. Back cover