| 一种针对SSM的二层转发方法 |
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| 引用本文： | 王宇,许生旺,曹彦军,姚君. 一种针对SSM的二层转发方法[J]. 无线电工程, 2011, 41(1): 1-4 |
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| 作者姓名： | 王宇 许生旺 曹彦军 姚君 |
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| 作者单位： | 1. 北京跟踪与通信技术研究所,北京,100094
2. 中国电子科技集团公司第五十四研究所,河北,石家庄,050081 |
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| 摘 要： | 以太网交换机仅依据目的介质访问控制(Media Access Control,MAC)子层地址进行数据转发,指定源组播(Source Specific Multicast,SSM)数据进入交换机后可能被转发至其他频道的订阅用户。针对此问题,在分析了SSM协议模型的以太网交换问题的基础上,提出了SSM数据标识及源标识的加入方法,详细设计了SSM转发表的建立过程,给出了SSM数据的转发流程,并对方法的可行性进行了仿真验证。
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| 关 键 词： | 二层转发 指定源组播 802.1Q 思科组管理协议(Cisco Group Management Protocol CGMP) |
A Layer2 Forwarding Method to Handle the SSM Traffic |
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| WANG Yu,XU Sheng-wang,CAO Yan-jun,YAO Jun. A Layer2 Forwarding Method to Handle the SSM Traffic[J]. Radio Engineering of China, 2011, 41(1): 1-4 |
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| Authors: | WANG Yu XU Sheng-wang CAO Yan-jun YAO Jun |
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| Affiliation: | WANG Yu1,XU Sheng-wang1,CAO Yan-jun2,YAO Jun2(1.Beijing Institute of Tracking and Telecommunications Technology,Beijing 100094,China,2.The 54th Research Institute of CETC,Shijiazhuang Hebei 050081,China) |
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| Abstract: | Ethernet switches forward traffics based on destination MAC address,SSM traffics may be forwarded to the wrong subscribers when transmitted in the switches.In this paper,based on the analysis of Ethernet switches mechanism and SSM model,a method to identify SSM traffic and the source is proposed,then a way to establish SSM forwarding table in the switches is designed in detail,after which the forwarding chart of SSM traffic is also presented.Finally,the feasibility of the method is verified through simulati... |
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| Keywords: | layer2 forwarding SSM 802.1Q CGMP |
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