Achieve Load Balancing with a Re-routable LB-BvN Switching Scheme

Multipath based routing and switching can achieve network-wide load balancing and reduce the port contentions of switching devices. From this point of view, in this paper, after analyzing the feasibility of implementing multinext-hop in core switching networks comprehensively, it comes up with a switching scheme called MXRS (Multi-next-hop Rerouting Switch) which supports multi-next-hop dynamical rerouting. The MXRS scheme implements dynamical re-routing internal the switches according to congestion status to achieve real-time load balancing, and it can provide various traffic with different routing paths based on their QoS requirements. Theoretical analysis and simulation results show that switches equipped with MXRS can provide both good delay and throughput performance, and can reduce port contentions significantly.