公开(公告)号：US20050117577A1

公开(公告)日：2005-06-02

申请号：US11030298

申请日：2005-01-07

申请人： Aline Fichou ,  Claude Galand ,  Jacques Fieschi ,  Jean-Francoise Pennec

发明人： Aline Fichou ,  Claude Galand ,  Jacques Fieschi ,  Jean-Francoise Pennec

IPC分类号： H04L12/46 ,  H04L29/06 ,  H04L12/56

CPC分类号： H04L29/06 ,  H04L12/4604 ,  H04L69/08 ,  H04L69/16 ,  H04L69/22 ,  H04L2212/00

摘要： A method and system of transmitting data frames from a sending unit (10) to a receiving unit (12) in a data transmission network comprising at least a backbone (14) wherein the data are transmitted over high speed links enabling long Maximum Transmission Units (MTU) between an ingress node (18) connected to the sending unit by a first access link (16) and an egress node (22) connected to the receiving node by a second access link (20), with at least one of the first and second access links being a low speed access link requiring the data frames to be segmented into short MTUs between the sending unit and the ingress node and between the egress node and the receiving unit. A plurality of consecutive segmented data frames (28) belonging to the same flow of data transmitted from the sending unit to the ingress node are assembled by the ingress node into an assembled data frame (30) corresponding to the long MTU, the assembled data frame is transmitted over the backbone from the ingress node to the egress node at a high speed authorized by the backbone links, and the assembled data frame is de-assembled into consecutive segmented data frames (32) corresponding to the short MTUs by the egress node before being transmitted to the receiving unit.

摘要翻译： 一种将数据帧从发送单元（10）发送到至少包括主干（14）的数据传输网络中的接收单元（12）的方法和系统，其中所述数据通过高速链路传输，从而能够实现长的最大传输单元 在由第一接入链路（16）连接到发送单元的入口节点（18）和通过第二接入链路（20）连接到接收节点的出口节点（22）之间的MTU中，至少一个第一接入链路 并且第二接入链路是低速接入链路，需要将数据帧分段成发送单元和入节点之间以及出口节点与接收单元之间的短MTU。 属于从发送单元向入口节点发送的相同数据流的多个连续分段数据帧（28）由入口节点组装成对应于长MTU的组合数据帧（30），组合数据帧 以骨干链路授权的高速通过骨干网从入口节点传送到出口节点，组装好的数据帧在出口节点之前被去组装成与出口节点对应的短MTU的连续分段数据帧（32） 被发送到接收单元。