METHOD FOR MANAGING CONGESTION OF A TRANSMISSION LINK IN A PACKET COMMUNICATION NETWORK

摘要

In order to detect congestion on a transmission link, endpoint items of network equipment are associated with congestion-detection applications. Per class of service, one application sends to the other control messages indicating volumes of data transmitted by the concerned item of network equipment via the transmission link. On reception of the control messages, the other application obtains information on volumes of data received by the other item of network equipment. By determining a first divergence in volumes of data transmitted between two control messages and a second divergence in volumes of data received, between two control messages, this other application is able to detect a situation of congestion on the transmission link occurring for one or more classes of service, and to generate an alarm signal accordingly.

主权项

1. A method for managing congestion on a transmission link from a first item of network equipment to a second item of network equipment in a packet communication network, wherein the first item of network equipment is associated with a first congestion detection application and the second item of network equipment is associated with a second congestion detection application, and wherein the second application implements, conjointly with the first application, a congestion control mechanism per class of service on a transmission link in which the second application performs, for at least one class of service:
receiving, for each class of service, a first control message coming from the first congestion detection application, the first control message including information representing a first volume of data colored by the class of service and transmitted by the first item of network equipment up to a first instant; receiving, for each class of service, a second control message coming from the first congestion detection application, the second control message including information representing a second volume of data colored by the class of service and transmitted by the first item of network equipment up to a second instant; determining a first divergence between the first volume of data and the second volume of data; on reception of each first control message, obtaining information representing a third volume of data colored by the class of service and received by the second item of network equipment via the transmission link up to a third instant; on reception of each second control message, obtaining information representing a fourth volume of data colored by the class of service and received by the second item of network equipment via the transmission link up to a fourth instant; determining, for each class of service, a second divergence between the third volume of data and the fourth volume of data; and generating or not, for each class of service, an alarm signal representing congestion on the transmission link of the data colored by the class of service, according to a difference between the first divergence and the second divergence for the class of service.