Title: Erica Switch Algorithm: a Complete Description Distribution: Atm Forum Technical Working Group Members (traac Management)

The ERICA switch algorithm has been discussed extensively in TM group in the past. However, over the last two years, the algorithm has been substantially modiied. This contribution describes the current version of ERICA switch algorithm in complete detail. The algorithm achieves both eeciency and fairness, and exhibits a fast transient response. The development of the algorithm is traced, and the new approaches it uses to achieve its objectives are highlighted. Several design and implementation aspects of the algorithm are examined. In addition, several enhancements to the algorithm are proposed and studied. Notice: This contribution has been prepared to assist the ATM Forum. It is ooered to the Forum as a basis for discussion and is not a binding proposal on the part of any of the contributing organizations. The statements are subject to change in form and content after further study. Speciically, the contributors reserve the right to add to, amend or modify the statements contained herein.