Analysis of a dual bus protocol

The counteracting priority coupled queue (CPCQ) is qualitatively similar to DQDB in that the delay curve is not uniform. The CPCQ is simpler to implement because the protocol requires only limited sensing. Nodes need not constantly monitor the channel to track the number of outstanding requests from downstream nodes. The author explored the multiplexing delay induced by the protocol when used in a wide area network (WAN). It is shown that it possesses many desirable properties. These include, robustness and lack of sensitivity to a number of system parameters. Further, it can operate effectively in the high speed fibre optic environment, and allows for assignable privileges.<
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