In this contribution we give a general definition of fairness and show how this can achieve various fairness definitions, such as those mentioned in the ATM Forum TM 4.0 Specifications [tm4]. We discuss how a pricing policy can be mapped to general fairness. The general fairness can be achieved by calculating the $ExcessFairshare$ for each VC. We show how a switch algorithm can be modified to support the general fairness by using the $ExcessFairshare$. We use ERICA+ as an example switch algorithm and show how it can be modified to achieve the general fairness. Simulations results are presented to demonstrate that the modified switch algorithm achieves general fairness.
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