Graceful insertion and removal of stations in FDDI networks

The effects of station insertion and removal from. concentrators attached to the dual ring in FDDI networks are examined. The frame-loss caused by the insertion and removal of stations is compared to the frame-loss caused by the ring bit error rate (BER). This is found to be significant for most FDDI networks. Algorithms for "graceful" insertion and removal are proposed to minimize the impact of these actions on the network performance. The effect, on the network bandwidth of the proposed solutions is compared to the effect of normal insertion and removal. Overall, the merits of graceful insertion and removal are found to be marginally significant.