Design and Performance Evaluation of Local Fast Reroute Scheme for IP Multicast Tree

• Main Authors: Chih-Hsuan Wu, 吳誌軒
• Other Authors: Hui-kai Su
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/bbyqzk

碩士 === 國立虎尾科技大學 === 電機工程研究所 === 100 === Recently, more and more real-time multimedia application services are provided over Internet, such as IPTV, MoD, Video Conference, etc. For the real-time multimedia applica-tions that network availability is one of the important QoS (Quality of Service) parameters in IP multicast transport networks. The two types of approaches to improve network resilience in the IP layer are IP restoration and IP protection. IP restoration attempts to find a new route by which to restore connectivity once a failure has occurred, e.g., Interior Gateway Protocol (IGP) routing recovery. IP protection, the intention of which is to achieve rapid recovery from failure (in just a few milliseconds), is based on fixed and predetermined failure recovery, where the selection of the next-hop is performed in conjunction with the identification of a backup for the next-hop. In IP multicast, they were very serious affected of real-time services when the failure happened in the multicasting tree of link or node. While the upper node or link in multicast tree has failure, it would affect all of downstream end-user. In this thesis, we pro-pose a Tree-Based Local Fast Reroute scheme for IP multicast tree with two algorithms for share-tree node protection and link protection in the intra-area multicast routing. Finally, the network simulator ns2 was used to demonstrate the performances of packet loss and control overhead.