An Efficient Algorithm for Rapidly Establishing Bidirectional Label Switch Paths Based on Single Trips of Control Packets
JIN Xin① WEN An① HUANG Weifang① LIU Nian① WEI Chengzhi① ZHANG Jianbo② REN Zhi②
①(CSG Power Dispatching Control Center, Guangzhou 510623, China) ②(Chongqing Key Laboratory of Mobile Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China)
Bidirectional Label Switch Paths (LSPs) are important parts of Multi-Protocol Label Switching- Transport Profile (MPLS-TP) networking technology. However, the existing algorithms of establishing bidirectional LSPs have redundancy in operation, control overhead, and waiting time of data packets. To address this problem, a novel algorithm based on single trips of control packets, Efficient Algorithm for Establishing Biderictional LSPs (EAEBL), is proposed in this article. On the premise of completing the establishment of bidirectional LSPs, EAEBL only needs to transfer the control packet through a single trip, thus the redundancy in operation and control overhead is reduced and conveying data packets is accelerated. Theoretical analysis verifies the effectiveness of EAEBL. Simulation results show that EAEBL reduces the control overhead and delay for establishing bidirectional LSPs by at least 14.7% and 50%, respectively, as compared with three existing algorithms. Moreover, the waiting time of data packets in source LSPs is decreased to approach zero.
金鑫,文安,黄维芳,刘年, 魏承志,张剑波,任智. 基于单程建路的高效快速双向标签交换路径生成算法[J]. 电子与信息学报, 2016, 38(3): 707-712.
JIN Xin, WEN An, HUANG Weifang, LIU Nian. An Efficient Algorithm for Rapidly Establishing Bidirectional Label Switch Paths Based on Single Trips of Control Packets. JEIT, 2016, 38(3): 707-712.
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