QoS Routing Algorithms under Inaccurate Routing Information for Bandwidth Constrained Applications 1
Xavi Masip‐Bruin, S. Sánchez-López, Josep Solé‐Pareta, Jordi Domingo‐Pascual · 2003
are proposed by the IETF to improve the network performance. Moreover, some QoS routing algorithms must be added in order to optimize the path selection process. However, in highly dynamic large networks, existing QoS routing algorithms suffer from a blocking probability, which in part is due to the existence of inaccuracy in the network state information used to select the path. This paper deals with the BYPASS based routing mechanism, which was introduced in a previous paper to overcome this routing inaccuracy effect in IP/MPLS scenarios. We suggest an enhancement of the BBR mechanism to optimize the bandwidth allocation by balancing the path length and the residual bandwidth, and its performance is evaluated by simulation. Keywords-QoS Routing, MPLS, routing inaccuracy