Abstract: A new parameter, which is based on label switching path (LSP) queuing delay and packet loss rates and refered to as distributable traffic(DT), is defined to reflect the load of LSP comprehensively. Then based on DT, an adaptive multiple protoced label switching (MPLS) traffic distribution scheme is proposed to perform traffic distribution in MPLS networks, which is refered to as DTMD. Only label edge routers (LERs) are required to perform special function in DTMD scheme, so the scalability is maintained. Simulation results indicate that the new proposed scheme can perform stable even in dynamic network environment, and it can distribute the traffic onto parallel LSPs more evenly and fairly when compared to delay-based schemes.

Key words: multiple protoced label switching, traffic engineering, Hash function, traffic distribution