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Table of Contents
1 Multicast Overview····································································································································1-1
Multicast Overview··································································································································1-1
Information Transmission in the Unicast Mode···············································································1-1
Information Transmission in the Broadcast Mode···········································································1-2
Information Transmission in the Multicast Mode·············································································1-3
Roles in Multicast ····························································································································1-3
Common Notations in Multicast·······································································································1-4
Advantages and Applications of Multicast·······················································································1-4
Multicast Models····································································································································· 1-5
Multicast Architecture··············································································��···············································1-6
Multicast Address····························································································································1-6
Multicast Protocols ··························································································································1-9
Multicast Packet Forwarding Mechanism····························································································· 1-10
Implementation of the RPF Mechanism························································································1-11
RPF Check····································································································································1-11
2 Common Multicast Configuration············································································································1-1
Common Multicast Configuration············································································································1-1
Configuring Suppression on the Multicast Source Port···································································1-1
Configuring a Multicast MAC Address Entry···················································································1-2
Configuring Dropping Unknown Multicast Packets········································································· 1-3
Displaying and Maintaining Common Multicast Configuration································································1-3
3 IGMP Snooping Configuration·················································································································1-1
IGMP Snooping Overview·······················································································································1-1
Principle of IGMP Snooping············································································································1-1
Basic Concepts in IGMP Snooping·································································································1-2
Work Mechanism of IGMP Snooping······························································································1-3
Configuring IGMP Snooping···················································································································1-5
Enabling IGMP Snooping················································································································1-5
Configuring the Version of IGMP Snooping···················································································· 1-6
Configuring Timers··························································································································1-7
Configuring Fast Leave Processing································································································ 1-7
Configuring a Multicast Group Filter································································································1-8
Configuring the Maximum Number of Multicast Groups on a Port··················································1-9
Configuring IGMP Snooping Querier·····························································································1-10
Suppressing Flooding of Unknown Multicast Traffic in a VLAN····················································1-11
Configuring Static Member Port for a Multicast Group··································································1-12
Configuring a Static Router Port····································································································1-13
Configuring a Port as a Simulated Group Member······································································· 1-13
Configuring a VLAN Tag for Query Messages··············································································1-14
Configuring Multicast VLAN ··········································································································1-15
Displaying and Maintaining IGMP Snooping·························································································1-16
IGMP Snooping Configuration Examples····························································································· 1-17