二层组播转发原理与IGMP Snooping介绍.pdf

二层组播转发原理与IGMPSnooping介绍

目录

1.IP组播概述..................................................................................................................................2
1.1IP组播的必要性................................................................................................................2
1.2组播IP地址......................................................................................................................2
1.3组播地址划分....................................................................................................................3
1.4组播地址映射....................................................................................................................3
1.5组播通信与相关协议框架...............................................................................................4
2.二层组播转发原理....................................................................................................................5
3.IGMP与IGMPSnooping............................................................................................................5
3.1IGMP概述.........................................................................................................................5
3.2IGMPv1介绍.....................................................................................................................5
3.2.1IGMPv1的报文格式..............................................................................................6
3.2.2报文介绍与处理说明...........................................................................................6
3.3IGMPv2介绍.....................................................................................................................7
3.3.1IGMPv2报文格式说明..........................................................................................7
3.3.2报文介绍与处理说明...........................................................................................7
3.4IGMPv3介绍.....................................................................................................................