Abstract: First we give two definitions of the path bandwidth fragmention function and the networks efficiency function. Then we integrate the delay, bandwidth requirement and bandwidth characteristic of the connection into the path selection to achieve an integrated QoS routing algorithm based on Hopfield neural network. We proposed HNN mode which combines many features, such as a very good convergence, a relatively low programming complexity and an ability to operate in real time. In the end simulation results are given.

Key words: QoS routing, path bandwidth fragmention function, networks efficiency function