Abstract: Atraffic queueing model for resilient packet ring ( RPR) netw orks was built , and a method for quantitatively ana lyzing the acket transfer dela ys in RPR net work was presented as well. Based o n thi s metho d, the av erag e queueing time and t ransfer delay of the di fferent prio ri ty t raff ic w ere obtained. It is co ncluded from the quanti tativ e analysis that the low er prio ri ty traf fic in t ransmi t buffer has long er queueing time than tha t o f higher priority t raf fic. On the o ther hand, the highest priority t raf fic (class-A) in sing le-queue ring i s delayed more time than that in dual-queue ring , in co ntrary , the low er priority t raffic ( class-B and class-C) in sing le-queue ring is delayed less time than that in dual-queue ring.

Key words: resilient packet ring, queueing time, transfer delay