This chapter describes how to configure the Precision Time Protocol (PTP) on Cisco NX-OS devices. This chapter includes the following sections: About PTP; Guidelines and Limitations for PTP; Default Settings for PTP; Configuring PTP; Timestamp Tagging; Verifying the PTP Configuration; Configuration Examples for PTP; Additional References; About PTP

Precision Time Protocol (PTP) is defined in IEEE 1588 as Precision Clock Synchronization for Networked Measurements and Control Systems, and was developed to synchronize the clocks in packet-based networks that include distributed device clocks of varying precision and stability.

2019年12月20日 · Precision Time Protocol (PTP) is defined in IEEE 1588 as Precision Clock Synchronization for Networked Measurements and Control Systems, and was developed to synchronize the clocks in packet-based networks that include distributed device clocks of varying precision and stability.

In this lesson, we will focus on a network protocol which is important for network time synchronization. Here, we will learn What is PTP (Precision Time Protocol)? How we use it and How to Configure PTP on Cisco devices. Before we have learned similar NTP (Network Time Protocol) and How to Configure NTP on Cisco Routers.

这个方案通过在思科Nexus3100平台交换机和Nexus9000系列交换机上面利用IEEE1588-2008（PTP）版本2（PTPv2）可以给现在的数据中心网络和金融交易应用提供亚微妙精度的时间。PTP是一个可以给包交换网络提供纳秒精度的分布式时间同步协议。

Configuring PTP on an Interface - Explore how to use NX-API REST API with the Cisco Nexus 3000 and 9000 Series switches

Distributed time synchronization protocol for packet network. Provides nanosecond accuracy. A PTP network is made up of PTP-enabled devices. PTP msgs from GM are terminated by the BC. Enabling PTP Globally on the switch enables PTP on all interfaces. PTP messages are processed in native Vlan. Operates only in L2 mode.

2020年7月1日 · This document describes how to enable a highly accurate timing solution that can provide sub-microsecond accuracy for today’s data center network and financial trading applications by using IEEE 1588-2008 Precision Time Protocol (PTP) Version 2 (PTPv2). PTP is a distributed nanosecond accuracy timing synchronization protocol for packet network.

本文档通过适用于8275.1和8275.2电信配置文件中的Cisco IOS® XR设备的示例配置、示例和故障排除命令，介绍Precision时间协议(PTP)和同步以太网(SyncE)的工作原理。

2019年9月18日 · PTP is NOT AVAILABLE for Catalyst 9200 switches. (ref: https://www.cisco.com/c/dam/en/us/products/collateral/switches/catalyst-9000/nb-06-cat9000-wp-cte-en.pdf Slide 12). You will need to upgrade to at least a …