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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 ············································································································································ 12
Introduction to VPN instances ······························································································································ 12
Multicast application in VPNs ······························································································································ 12
Configuring IGMP snooping ····································································································································· 14
Overview ········································································································································································· 14
Basic IGMP snooping concepts ··························································································································· 14
How IGMP snooping works ································································································································· 16
Protocols and standards ······································································································································· 17
IGMP snooping configuration task list ························································································································· 17
Configuring basic IGMP snooping functions ·············································································································· 18
Enabling IGMP snooping ····································································································································· 18
Specifying the IGMP snooping version ··············································································································· 19
Setting the maximum number of IGMP snooping forwarding entries ······························································ 20
Configuring parameters for IGMP queries and responses ··············································································· 20
Configuring IGMP snooping port functions ················································································································· 21
Setting aging timers for dynamic ports ··············································································································· 21
Configuring static ports ········································································································································· 22
Enabling IGMP snooping fast-leave processing ································································································· 22
Configuring IGMP snooping policies ··························································································································· 23
Configuring a multicast group filter ····················································································································· 23
Configuring multicast source port filtering ·········································································································· 24
Enabling dropping unknown multicast data ······································································································· 25
Enabling IGMP report suppression ······················································································································ 25
Setting the maximum number of multicast groups on a port ············································································ 26
Enabling the multicast group replacement function ··························································································· 26
Displaying and maintaining IGMP snooping ·············································································································· 27
IGMP snooping configuration examples ····················································································································· 28
Group policy configuration example ·················································································································· 28
Static port configuration example ······················································································································· 30
Troubleshooting IGMP snooping ·································································································································· 32
Layer 2 multicast forwarding cannot function ···································································································· 32
Multicast group filter does not work ···················································································································· 33
Configuring PIM snooping ········································································································································ 34
Overview ········································································································································································· 34
Configuring PIM snooping ············································································································································ 35
Displaying and maintaining PIM snooping ················································································································· 36
PIM snooping configuration example ·························································································································· 36
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