Performance management in SONET-based multi-service networks

A performance management scheme is introduced to satisfy end-to-end performance requirements of multiclass services, using a nested control scheme. The network-level controller periodically computes an optimal bandwidth allocation policy for the entire network, and downloads parameters to the call- and packet-level controllers to regulate network traffic accordingly. The call-level controller limits SONET (synchronous optical network) pipe fills, exercises access-control fairly across source destination pairs, and is based on profitability across call classes. The packet-level controller provides congestion-free high-speed data transmission within the SONET pipes designated and realized by the network and call controllers, respectively