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Contents
Multicast overview ······················································································································································· 1
Introduction to multicast ···················································································································································· 1
Comparison of information transmission techniques ···························································································· 1
Features of multicast ················································································································································· 3
Common notations in multicast ······························································································································· 4
Advantages and applications of multicast ············································································································· 4
Multicast models ································································································································································ 5
Multicast architecture ························································································································································ 5
Multicast addresses ·················································································································································· 6
Multicast protocols ··················································································································································· 9
Multicast packet forwarding mechanism ····················································································································· 11
Multi-instance multicast ·················································································································································· 12
Introduction to the multi-instance concept ··········································································································· 12
Multi-instance application in multicast ················································································································ 12
IGMP snooping configuration ··································································································································· 14
IGMP snooping overview ·············································································································································· 14
Principle of IGMP snooping ································································································································· 14
Basic concepts in IGMP snooping ······················································································································· 15
How IGMP snooping works ································································································································· 16
IGMP snooping proxying ····································································································································· 18
Protocols and standards ······································································································································· 19
IGMP snooping configuration task list ························································································································· 19
Configuring basic functions of IGMP snooping ·········································································································· 20
Configuration prerequisites ·································································································································· 20
Enabling IGMP snooping ····································································································································· 20
Configuring the version of IGMP snooping ········································································································ 21
Configuring static multicast MAC address entries ····························································································· 21
Configuring IGMP snooping port functions ················································································································· 22
Configuration prerequisites ·································································································································· 22
Configuring aging timers for dynamic ports ······································································································ 23
Configuring static ports ········································································································································ 23
Configuring simulated joining ······························································································································ 24
Configuring fast-leave processing ······················································································································· 25
Disabling a port from becoming a dynamic router port ··················································································· 26
Configuring IGMP snooping querier ··························································································································· 26
Configuration prerequisites ·································································································································· 26
Enabling IGMP snooping querier ························································································································ 27
Configuring IGMP queries and responses ·········································································································· 27
Configuring source IP address of IGMP queries ································································································ 28
Configuring IGMP snooping proxying ························································································································ 29
Configuration prerequisites ·································································································································· 29
Enabling IGMP snooping proxying ····················································································································· 29
Configuring a source IP address for the IGMP messages sent by the proxy ·················································· 29
Configuring an IGMP snooping policy ························································································································ 30
Configuration prerequisites ·································································································································· 30
Configuring a multicast group filter ····················································································································· 30
Configuring multicast source port filtering ·········································································································· 31
Configuring the function of dropping unknown multicast data ········································································ 31
Configuring IGMP report suppression ················································································································ 32
Configuring the maximum number of multicast groups that a port can join··················································· 32
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