软件定义网络中基于BIER组播的交换机 位索引转发表快速构建
Fast Construction of the Bit Index Forwarding Table of Switch for BIER-based Multicasting in SDNs
投稿时间:2020-09-16  修订日期:2020-09-16
DOI:
中文关键词: 软件定义网络  组播  位索引显式复制  位索引转发表
英文关键词: software-defined networking  multicast  bit index explicit replication  bit index forwarding table
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位E-mail
刘艳萍 中南民族大学计算机科学学院 liuyp0225@163.com 
杨喜敏 中南民族大学计算机科学学院 yangximin@scuec.edu.cn 
冯伟 海能达通信股份有限公司  
唐菀 中南民族大学计算机科学学院  
摘要点击次数: 134
全文下载次数: 0
中文摘要:
      位索引显式复制(BIER)组播网络中交换机的位索引转发表(BIFT)是BIER组播报文转发的核心所在。提出一种考虑组播报文接收者的组播路由子树分类模式,设计的BIFT生成算法(BCA)通过在一次组播路由树回溯过程中进行子树合并和分类,为所有软件定义网络(SDN)交换机构建位索引转发表。在组播网络组成员发生变化时,能快速重构组播网络中各交换机的BIFT,强化BIER的适应性。实验结果表明,相对于常规基于SDN架构的组播网络,组播接收者加入引入BIER的组播网络的延迟更稳定,BCA算法对流表的更新时间和组播加入延迟影响很小。
英文摘要:
      The Bit Index Forwarding Table (BIFT) of switch in the multicast using Bit Index Explicit Replication (BIER) is the core of BIER multicast packet forwarding. In this paper, a multicast routing subtree classification mode according to multicast message receivers is proposed. The designed BIFT Creating Algorithm (BCA) algorithm builds a bit index forwarding table for all multicast switching institutions in the Software-Defined Networking (SDN) network by merging and classifying the subtrees in a process of multicast routing tree backtracking. Once there is a XX change, the BIFT of each switch involving the multicast is rapidly reconstructed to strengthen the adaptability of the BIER to the dynamic network environment. The experimental results show that the delay of the receiver joining the multicast with BIER is more stable when compared with the conventional multicast in the SDN-based network, and the BCA algorithm has little impact on the update time of flow table and the delay of multicast joining.
View Fulltext   查看/发表评论  下载PDF阅读器
关闭