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Multicast overview ······················································································································································· 1
Introduction to multicast ···················································································································································· 1
Information transmission techniques ······················································································································· 1
Multicast features ······················································································································································ 3
Common notations in multicast ······························································································································· 4
Multicast benefits and applications ························································································································ 4
Multicast models ································································································································································ 5
Multicast architecture ························································································································································ 5
Multicast addresses ·················································································································································· 6
Multicast protocols ··················································································································································· 9
Multicast packet forwarding mechanism ····················································································································· 11
Multicast support for VPNs ············································································································································ 11
Introduction to VPN instances ······························································································································ 11
Multicast application in VPNs ······························································································································ 12
Configuring IGMP snooping ····································································································································· 13
Overview ········································································································································································· 13
Basic IGMP snooping concepts ··························································································································· 13
How IGMP snooping works ································································································································· 15
Protocols and standards ······································································································································· 16
Feature and hardware compatibility ···························································································································· 16
IGMP snooping configuration task list ························································································································· 16
Configuring basic IGMP snooping functions ·············································································································· 17
Enabling IGMP snooping ····································································································································· 17
Specifying the IGMP snooping version ··············································································································· 18
Setting the maximum number of IGMP snooping forwarding entries ······························································ 19
Configuring IGMP snooping port functions ················································································································· 19
Setting aging timers for dynamic ports ··············································································································· 19
Configuring static ports ········································································································································· 20
Configuring a port as a simulated member host ······························································································· 21
Enabling IGMP snooping fast-leave processing ································································································· 21
Disabling a port from becoming a dynamic router port ··················································································· 22
Configuring an IGMP snooping querier ······················································································································ 23
Configuration prerequisites ·································································································································· 23
Enabling IGMP snooping querier ························································································································ 23
Configuring parameters for IGMP queries and responses ··············································································· 23
Configuring parameters for IGMP messages ·············································································································· 24
Configuration prerequisites ·································································································································· 24
Configuring source IP addresses for IGMP messages ······················································································· 24
Setting the 802.1p precedence for IGMP messages ························································································ 25
Configuring IGMP snooping policies ··························································································································· 26
Configuring a multicast group filter ····················································································································· 26
Configuring multicast source port filtering ·········································································································· 27
Enabling dropping unknown multicast data ······································································································· 27
Enabling IGMP report suppression ······················································································································ 28
Setting the maximum number of multicast groups on a port ············································································ 28
Enabling the multicast group replacement function ··························································································· 29
Displaying and maintaining IGMP snooping ·············································································································· 30
IGMP snooping configuration examples ····················································································································· 31
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