Invention Grant
US08416763B1 System and method for providing quality inter-domain network time transport
有权
提供优质域间网络时间传输的系统和方法
- Patent Title: System and method for providing quality inter-domain network time transport
- Patent Title (中): 提供优质域间网络时间传输的系统和方法
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Application No.: US12271804Application Date: 2008-11-14
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Publication No.: US08416763B1Publication Date: 2013-04-09
- Inventor: Laurent Montini , William M. Townsley
- Applicant: Laurent Montini , William M. Townsley
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Patent Capital Group
- Main IPC: H04J3/06
- IPC: H04J3/06

Abstract:
A method is provided in one example embodiment and includes providing a time protocol assistant associated with a time-synchronized domain (TSD). The TSD includes a set of nodes that are synchronized to a same time source. The TSD has defined egress and ingress edge points where bidirectional measurements can be made and the egress and ingress edge points are coupled to the time protocol assistant. The method also includes synchronizing one or more packets flowing through a network that includes the TSD through the same time source. In more specific embodiments, the nodes are synchronized to the same time source via the network and the same time source is a grandmaster clock that synchronizes one or more transparent clocks. In yet other embodiments, the transparent clocks manipulate precision time protocol (PTP) packets sent by the grandmaster clock.
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