Method for preempting multi-procotol label switching flow controlling band width resource

Abstract

A method for anticipating multiprotocol label exchange flow control bandwidth resources is to firstly rank all the label exchange paths in every priority according to the size of the occupied bandwidth separately and try best to anticipate low priority in the limited anticipated sphere then to select the fewest number of LSP combination in its most advanced level after determining the anticipated level, if the anticipated bandwidth exceeds the desired value then the label exchange path is selected from high bandwidth label exchange path to make the occupied sum of bandwidth the smallest exceeding the desired value in the equivalent numbers of occupied sum of bandwidth to increase network stability and bandwidth utility.

Description

technical field

[0001] The invention relates to flow control in communication technology, in particular to a bandwidth resource preemption method in multi-protocol label switching flow control. Background technique

[0002] MPLS (Multi-Protocol Label Switching) traffic engineering is to make full use of the network resources of data communication network operators and avoid the unbalanced distribution of network traffic caused by the shortest path preferential forwarding of traditional IP (Internet Protocol) routing. Traditional IP routing makes the shortest path unutilized even if other suboptimal paths are idle when the shortest path is in a congested state.

[0003] MPLS traffic engineering specifies the transmission path of traffic in the network by creating a CR-LSP (Constrained Routing Label Switching Path) for a specific type of traffic, and reserves bandwidth with a certain priority for the transmission of these traffic.

[0004] In traffic engineering applications ...