Performance evaluation of shared bandwidth allocation method in MPLS networks: in case of multiple egress LSRs

摘要

In order to transmit IP datagrams fast in MPLS (Multi-Protocol Label Switching) networks, intermediate LSR(Label Switching Router)s have to map arriving IP datagram flows into some labels on Layer2 high speed switch such as VCI (Virtual Circuit Identifier) of ATM and establish LSP (Label Switched Path)s between these Ingress and Egress LER (Label Edge Router)s. This label mapping method is mainly divided into two schemes. One is the data-driven scheme and the other is the control-driven one. We have already proposed the new mapping method that combine these two schemes to compensate for drawbacks of them each other and have evaluated the preliminarily performance over 1-Ingress and 1-Egress LSR(1-1) topology. In this paper, we will also investigate the performance in case where N-Egress LSPs exist, namely over 1-N topology, and further explain the efficiency of the proposed label mapping method.