6533b827fe1ef96bd12871e8

RESEARCH PRODUCT

AQM generalized nyquist stability in multiple bottleneck networks

Laura GiarreDiego Di BernardoGiovanni NegliaDario Bauso

subject

RouterBasis (linear algebra)Communication networks; Control theory; Stability analysis;Control theoryNyquist stability criterionStability (learning theory)Active queue managementTelecommunications networkBottleneckMathematics

description

Abstract The influence of multiple bottlenecks on the stability of Active Queue Management (AQM) controllers, usually configured on a single bottleneck basis is discussed. We consider a network scenario where RED is configured at each router according to previously developed control theoretic techniques. These configuration rules assure stability in a single bottleneck scenario. We show that instability may arise when two links become congested. We justify this result through a multiple bottleneck model using the Generalized Nyquist stability criterion.

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