A QoS-based routing algorithm for PNNI ATM networks

摘要

Although the ATM Forum has proposed the Private Network-Network Interface (PNNI) specification to facilitate routing in ATM networks, path selection or routing algorithms that guarantee users' multiple Quality of Service (QoS) requirements remain an open issue since the PNNI protocol only provides a routing framework and does not standardize on a method of finding an appropriate path. In this paper, we propose a heuristic routing algorithm called the Backward Hierarchical Routing Algorithm (BHRA) for ATM networks, Which is compliant with the PNNI protocol.