Peak rate enforcement in ATM networks

Abstract

The authors address peak rate enforcement in asynchronous transfer mode (ATM) networks by pick-up policing mechanisms. Since the network cannot rely on user's compliance when declaring his traffic parameters, the policing function has been introduced to monitor the traffic characteristics of any connection. Policing mechanisms proposed in the literature are actually pick-up mechanisms since cells can pass transparently through unless a policing action was performed according to some counting process. The authors analyze the impact of the cell multiplexing jitter on policing mechanism dimensioning. Recognizing that dimensioning is a critical point for such mechanisms. It is shown that network buffer overflow cannot be avoided in certain conditions. Therefore, a new policing scheme, called cell spacing, is introduced, and two spacing algorithms are presented. >