LWIGMPv3轻量级互联网组理协议的研究与实现.docx

北京邮电大学硕士研究生学位论文Lw二IGMPv_3(轻量级互联网组管理协议)的研究与实现 RESEARCH AND DEVELOPMENT 0F UGHT WEIGHT INlERNET GROUP MANAGEMENT PROTOCOL ABSl№～CT With the popularity of Interact，the influence of network technology has permeated every comer of society,such as working，living and amusement．Because of its effectiveness in network bandwidth utilization． IP multicast technology has rapidly gained its importance．IGMPv3 is one of the most important protocols in IP multicast architecture，however,its logical structure is too complicated for practical applications．In order to solve this problem,Huawei Technologies Co．has proposed a simplified version of IGMPv3 in the‘‘LWLIGMPv3／MU)v2 internet draft”，which is analyzed in this thesis．Also，the I涮二IGMPV3 has been implemented on the XORP platform，and detailed test of the protocol has been carried out and analyzed． Firstly,the thesis introduces the background of the project briefly, focusing on the research status of IP multicast technology．By analyzing IP multicast architecture．the importance of lGMP is descfibed．Then the thesis compares the pros and cons of every version of IGMP and focuses on the analysis of IGMPV3． Secondly,simplification reasons are presented on the basis of analyzing deeply in LW-IGMPv3／MLDv2 dr心．LW-IGMPv3 and IGMPV3 are compared in aspects of message types，protocol procedures， multicast routing protocol interfaces and protocol compatibility．And then the level of simplification is analyzed． On the basis of the above analysis．U瞩，-IGMPv3 is designed and implemented on the XORP platforill．In order to evaluate the improvement between LW二IGMPv3 and IGMPv3。thorough tests are conducted，which includes functional test，compatibility test and performance test．The result shows that，LWjIG胁3 is able to support Ⅲ  北京邮电大学硕士研究生学位论文LW-IGMPv3(轻量级互联网组管理协议)的研究与实现 IP multicast correctly and effectively,and shows good compatibility with older versions of IGME It is believed that LW-IGMPv3 can greatly improve router performance in most situat