应用于精确网络时钟同步的新型传输技术研究

摘要

Providing IEEE1588v2 time synchronization is one of the most important functions in the transmission network based on MPLS/MPLS-TP.After analyzing the precise timing protocol IEEE1588v2, a new type of LSP, named hub spoke multipoint LSP (HSMP LSP) is put forward.Compared with the transportation with P2P or P2MP LSP, time synchronization with HSMP LSP could provide higher bandwidth usage efficiency in the transmission network based on MPLS/MPLS-TP.%在MPLS网络中提供时钟同步,是当前基于MPLS/MPLS-TP的传输网络的重要功能.经过对IEEE1588v2精确时钟协议的研究,创造性地提出了“中心分支多点标签交换路径”HSMP LSP(Hub Spoke Multi-point LSP).通过HSMP LSP承载IEEE1588v2协议,与使用普通点到点或者点到多点LSP进行承载相比,在保证相同的时钟同步精度要求下,能够更加高效地利用网络带宽资源.