公开(公告)号：CA2676117C

公开(公告)日：2017-04-11

申请号：CA2676117

申请日：2008-01-17

Applicant: IBM

Inventor： CARLSON SCOTT ,  CRABTREE DONALD ,  DAHLEN DENNIS ,  DHONDY NOSHIR ,  HACK MICHEL ,  SEVIGNY DENISE ,  SMITH RONALD SR ,  WIERBOWSKI JUDITH

IPC: H04J3/06

Abstract: Server time protocol (STP) messages and methods of exchange thereof are provided for facilitating synchronization of processing units of a timing network. The STP messages include exchange time parameters (XTP) commands and responses, and STP control (STC) commands and responses. XTP message exchange processing includes: generating an XTP message command at a first processing unit including a command transmit timestamp field set bythe first processing unit and a command receive timestamp field which is unset by the first processing unit; transmitting the XTP message command to a second processing unit; setting the command receive timestamp field in the XTP command with the time the XTP command is received at the second processing unit; and generating an XTP message response at the second processing unit, the message response including the command transmit timestamp set by the first processing unit and the command receive timestamp set by the second processing unit.

公开(公告)号：CA2676117A1

公开(公告)日：2008-08-07

申请号：CA2676117

申请日：2008-01-17

Applicant: IBM

Inventor： SEVIGNY DENISE ,  HACK MICHEL ,  DAHLEN DENNIS ,  DHONDY NOSHIR ,  CARLSON SCOTT ,  WIERBOWSKI JUDITH ,  CRABTREE DONALD ,  SMITH RONALD SR

IPC: H04J3/06

Abstract: Server time protocol (STP) messages and methods of exchange thereof are p rovided for facilitating synchronization of processing units of a timing net work. The STP messages include exchange time parameters (XTP) commands and r esponses, and STP control (STC) commands and responses. XTP message exchange processing includes: generating an XTP message command at a first processin g unit including a command transmit timestamp field set bythe first processi ng unit and a command receive timestamp field which is unset by the first pr ocessing unit; transmitting the XTP message command to a second processing u nit; setting the command receive timestamp field in the XTP command with the time the XTP command is received at the second processing unit; and generat ing an XTP message response at the second processing unit, the message respo nse including the command transmit timestamp set by the first processing uni t and the command receive timestamp set by the second processing unit.

公开(公告)号：CA2675645A1

公开(公告)日：2008-08-07

申请号：CA2675645

申请日：2008-01-21

Applicant: IBM

Inventor： ELKO DAVID ,  HACK MICHEL ,  SMITH RONALD SR ,  SEVIGNY DENISE ,  WHITNEY DAVID ,  WIERBOWSKI JUDITH ,  DHONDY NOSHIR ,  DAHLEN DENNIS ,  CRABTREE DONALD ,  CARLSON SCOTT

IPC: H04J3/06

Abstract: A timing network is provided that includes a plurality of servers. The se rvers of the network obtain information used to maintain the servers in time synchronization, thus ensuring the integrity of the servers.

公开(公告)号：CA2675644A1

公开(公告)日：2008-08-07

申请号：CA2675644

申请日：2008-01-17

Applicant: IBM

Inventor： WHITNEY DAVID ,  SMITH RONALD SR ,  DHONDY NOSHIR ,  DAHLEN DENNIS ,  WIERBOWSKI JUDITH ,  CRABTREE DONALD ,  CARLSON SCOTT ,  ELKO DAVID ,  SEVIGNY DENISE

IPC: H04J3/06

Abstract: Recoveryis provided in a timing network. A configuration is defined for t hat network, and in that configuration, an active primary server is identifi ed that provides a clock source for the network. Additionally, an alternate server is identified that can perform the role of the active primary server, should the active primary server fail. In response to a failure of the prim aryserver, the alternate server detects the failure and performs takeover of the primary server.

公开(公告)号：CA2675645C

公开(公告)日：2017-11-07

申请号：CA2675645

申请日：2008-01-21

Applicant: IBM

Inventor： CARLSON SCOTT ,  CRABTREE DONALD ,  DAHLEN DENNIS ,  DHONDY NOSHIR ,  ELKO DAVID ,  HACK MICHEL ,  SEVIGNY DENISE ,  SMITH RONALD SR ,  WHITNEY DAVID ,  WIERBOWSKI JUDITH

IPC: H04J3/06

Abstract: A timing network is provided that includes a plurality of servers. The servers of the network obtain information used to maintain the servers in time synchronization, thus ensuring the integrity of the servers.

公开(公告)号：CA2675644C

公开(公告)日：2017-11-07

申请号：CA2675644

申请日：2008-01-17

Applicant: IBM

Inventor： CARLSON SCOTT ,  CRABTREE DONALD ,  DAHLEN DENNIS ,  DHONDY NOSHIR ,  ELKO DAVID ,  SEVIGNY DENISE ,  SMITH RONALD SR ,  WHITNEY DAVID ,  WIERBOWSKI JUDITH

IPC: H04J3/06

Abstract: Recoveryis provided in a timing network. A configuration is defined for that network, and in that configuration, an active primary server is identified that provides a clock source for the network. Additionally, an alternate server is identified that can perform the role of the active primary server, should the active primary server fail. In response to a failure of the primaryserver, the alternate server detects the failure and performs takeover of the primary server.