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Multicast overview ······················································································································································· 1
Introduction to multicast ···················································································································································· 1
Information transmission techniques ······················································································································· 1
Multicast features ······················································································································································ 4
Common notations in multicast ······························································································································· 5
Multicast advantages and applications ················································································································· 5
Multicast models ································································································································································ 6
Multicast architecture ························································································································································ 7
Multicast addresses ·················································································································································· 7
Multicast protocols ················································································································································ 11
Multicast packet forwarding mechanism ····················································································································· 13
Multicast support for VPNs ············································································································································ 13
Introduction to VPN instances ······························································································································ 14
Multicast application in VPNs ······························································································································ 14
Configuring IGMP snooping ····································································································································· 16
Overview ········································································································································································· 16
Basic concepts in IGMP snooping ······················································································································· 16
How IGMP snooping works ································································································································· 18
IGMP snooping proxying ····································································································································· 20
Protocols and standards ······································································································································· 21
IGMP snooping configuration task list ························································································································· 21
Configuring basic IGMP snooping functions ·············································································································· 22
Enabling IGMP snooping ····································································································································· 23
Specifying the version of IGMP snooping ·········································································································· 23
Configuring static multicast MAC address entries ····························································································· 24
Configuring IGMP snooping port functions ················································································································· 24
Setting aging timers for dynamic ports ··············································································································· 25
Configuring static ports ········································································································································· 25
Configuring a port as a simulated member host ······························································································· 26
Enabling IGMP snooping fast-leave processing ································································································· 27
Disabling a port from becoming a dynamic router port ··················································································· 28
Configuring IGMP snooping querier ··························································································································· 29
Enabling IGMP snooping querier ························································································································ 29
Configuring parameters for IGMP queries and responses ··············································································· 29
Configuring the source IP addresses for IGMP queries ····················································································· 30
Configuring IGMP snooping proxying ························································································································ 31
Enabling IGMP snooping proxying ····················································································································· 31
Configuring a source IP address for the IGMP messages sent by the proxy ·················································· 31
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