Operation Manual – MulticastH3C S7500 Series Ethernet Switches Table of ContentsiTable of ContentsChapter 1 Multicast Overview ...................................................................................................... 1-11.1 Multicast Overview............................................................................................................. 1-11.1.1 Information Transmission in the Unicast Mode....................................................... 1-11.1.2 Information Transmission in the Broadcast Mode................................................... 1-21.1.3 Information Transmission in the Multicast Mode..................................................... 1-21.1.4 Advantages and Applications of Multicast .............................................................. 1-41.2 Multicast Architecture ........................................................................................................ 1-51.2.1 Multicast Address .................................................................................................... 1-51.2.2 IP Multicast Protocols.............................................................................................. 1-81.3 Forwarding Mechanism of Multicast Packets .................................................................... 1-9Chapter 2 GMRP Configuration ................................................................................................... 2-12.1 GMRP Overview ................................................................................................................ 2-12.2 Configuring GMRP............................................................................................................. 2-12.2.1 Enabling GMRP Globally ........................................................................................ 2-12.2.2 Enabling GMRP on the Port.................................................................................... 2-12.3 Displaying and Maintaining GMRP .................................................................................... 2-22.4 GMRP Configuration Example........................................................................................... 2-22.4.1 Enabling GMRP....................................................................................................... 2-2Chapter 3 IGMP Snooping Configuration ................................................................................... 3-13.1 Overview ............................................................................................................................ 3-13.1.1 IGMP Snooping Fundamentals ............................................................................... 3-13.1.2 IGMP Snooping Implementation ............................................................................. 3-23.2 IGMP Snooping Configuration ........................................................................................... 3-63.2.1 Enabling IGMP Snooping........................................................................................ 3-63.2.2 Configuring Timers .................................................................................................. 3-73.2.3 Enabling IGMP Fast Leave ..................................................................................... 3-83.2.4 Configuring IGMP Snooping Filtering ACLs............................................................ 3-83.2.5 Configuring to Limit the Number of Multicast Groups on a Port ........................... 3-103.2.6 Configuring Suppression on IGMP Report Messages .......................................... 3-103.2.7 Configuring Multicast VLAN .................................................................................. 3-103.3 Displaying and Maintaining IGMP Snooping ................................................................... 3-123.4 IGMP Snooping Configuration Examples ........................................................................ 3-123.4.1 Example 1 ............................................................................................................. 3-123.4.2 Example 2 ............................................................................................................. 3-133.5 Troubleshooting IGMP Snooping..................................................................................... 3-15Chapter 4 Common Multicast Configuration.............................................................................. 4-14.1 Overview ............................................................................................................................ 4-1