Method for providing a fair-rate allocation for available bit rate services

摘要

A method for allocating a fair bit rate for an ABR service. Forward and backward RM cells traversing a link 1 are received at an ATM switch. Both the forward and backward RM cells are associated with a session, with the forward RM cells being transmitted from a source to a destination and the backward RM cells being transmitted from the destination to the source. An advertised rate gamma l for link 1 is updated when a backward RM cell associated the session is received based on a change in a bottleneck bandwidth DELTA lambda of the session and a change in a bottleneck status DELTA beta of the session. The explicit rate lambda ER contained in the backward RM cell is rewritten as a minimum of the advertised rate gamma l and the explicit rate lambda ER. The backward RM cell is then transmitted to the source of the RM cell.