Method and device for sharing protection and improving band width utilization ratio

Abstract

The invention discloses a method and a device for shared protection and improvement of bandwidth utilization rate, which are used in a network system comprising a single board and network management. The method of the invention comprises reservation step of a shared link and dynamic allocation step of members in the shared link, wherein, the reservation step of the shared link is used for establishing the shared link for a plurality of data users and taking the shared link as shared transmission bandwidth; the dynamic allocation step of the members in the shard link is used for providing the shard protection or increasing the transmission bandwidth for the plurality of the data users, and priority of the protection is higher than that of increase of the user transmission bandwidth. By application of the invention, network protection and a bandwidth allocation mechanism are made to be more flexible, and service reliability and the network bandwidth utilization rate can be effectively improved.

Description

technical field [0001] The invention relates to the problem of bandwidth utilization in network transmission, in particular to a method and a device for providing shared protection for multiple data service users and improving bandwidth utilization of SDH (Synchronous Digital Hierarchy) optical transmission equipment. Background technique [0002] The SDH transport network that introduces virtual concatenation VC (Virtual Concatenation) and LCAS (Link Capacity Adjustment Scheme) technologies provides a good transport platform for data services. With the inevitable trend of network IP development, data services in the transport network The proportion occupied will become larger and larger, and issues such as data service protection and bandwidth utilization have gradually become the focus of attention in the development of transport network technology. [0003] For the protection of data services in the transport network, there are mainly two methods: one is SDH multiplex sec...

AI Technical Summary

Problems solved by technology

A very important feature of data services is the uncertainty of traffic. The user's bandwidth demand may be greater than the statically configured transmission bandwidth for a certain period of time. At this time, there will be insufficient bandwidth. In order to ensure no packet loss , the usual processing method is to send flow control frames to the source end user through the processing module of the data board, thereby reducing the bandwidth demand of the user, and this processing method of sending flow control frames is to reduce the quality of service QoS (Quality of Service ) at the expense of the user; and possibly in another period of time, the user’s bandwidth demand will be less than the statically configured transmission bandwidth. At this time, there will be bandwidth redundancy. In order to achieve rate adaptation, the usual processing method is Solve it by inserting idle frames, at this time, the utilization rate of network bandwidth will be relatively low

Images