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计算机工程 ›› 2008, Vol. 34 ›› Issue (16): 107-110. doi: 10.3969/j.issn.1000-3428.2008.16.038

• 网络与通信 • 上一篇    下一篇

基于组播的分布式路由器转发表快速同步

李 丹,尹 蕾,申 涓,张建辉   

  1. (国家数字交换系统工程技术研究中心,郑州 450002)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-08-20 发布日期:2008-08-20

Fast Synchronization of Forwarding Table in Distributed Router Based on Multicast

LI Dan, YIN Lei, SHEN Juan, ZHANG Jian-hui   

  1. (China National Digital Switching System Engineering & Technological R&D Center, Zhengzhou 450002)
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-08-20 Published:2008-08-20

摘要: 控制平面与数据平面的转发表同步问题是影响分布式路由器可靠性与可扩展性的重要因素。通过分析分布式路由器的结构特点及各功能实体的逻辑关系,提出一种基于组播的分布式路由器转发表快速同步方法(RIMcast),并进行了总体设计。理论与仿真分析表明,RIMcast方法对于多块分布式路由器接口板具有良好的时延特性。

关键词: 分布式路由器, 转发表, 同步时延

Abstract: The synchronization of forwarding table between control plane and forwarding plane is an important factor that influences the data forwarding reliability and the scalability. By analyzing the structure and the logical relationship of each functional entity in distributed router, this paper proposes a fast synchronization method of forwarding table named RIMcast, and gives a macroscopical design. It is indicated that RIMcast has good delay characteristic for multiple interface card of distributed router from the analysis of theoretic mathematical model and simulation about RIMcast.

Key words: distributed router, forwarding table, delay of synchronization

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