3Com 5500-EI PWR Install Manual page 335

1 Multicast Overview ······································································································································· 1
Multicast Overview ····································································································································· 1
Information Transmission in the Unicast Mode ·················································································· 1
Information Transmission in the Broadcast Mode·············································································· 2
Information Transmission in the Multicast Mode················································································ 3
Roles in Multicast ······························································································································· 3
Common Notations in Multicast·········································································································· 4
Advantages and Applications of Multicast·························································································· 5
Multicast Models ········································································································································ 5
Multicast Architecture································································································································· 6
Multicast Address ······························································································································· 6
Multicast Protocols ····························································································································· 9
Multicast Packet Forwarding Mechanism ································································································ 10
Implementation of the RPF Mechanism ··························································································· 11
RPF Check ······································································································································· 11
2 Common Multicast Configuration··············································································································· 1
Common Multicast Configuration··············································································································· 1
Enabling Multicast Packet Buffering··································································································· 1
Enabling Multicast Routing················································································································· 2
Configuring Limit on the Number of Routing Entries·········································································· 2
Configuring Suppression on the Multicast Source Port······································································ 3
Clearing Multicast Forwarding and Routing Entries ··········································································· 3
Configuring a Multicast MAC Address Entry ······················································································ 4
Configuring Dropping Unknown Multicast Packets ············································································ 5
Tracing a Multicast Path ····················································································································· 5
Displaying and Maintaining Common Multicast Configuration··································································· 5
3 IGMP Configuration ······································································································································ 1
IGMP Overview ·········································································································································· 1
IGMP Versions ··································································································································· 1
Work Mechanism of IGMPv1·············································································································· 1
Enhancements Provided by IGMPv2 ································································································· 3
Enhancements Provided by IGMPv3 ································································································· 3
IGMP Proxy ········································································································································ 5
Configuring IGMP······································································································································· 6
IGMP Configuration Task List ············································································································ 6
Enabling IGMP ··································································································································· 6
Configuring IGMP Version·················································································································· 7
Configuring Options Related to IGMP Query Messages···································································· 7
Configuring the Maximum Allowed Number of Multicast Groups······················································· 9
Configuring a Multicast Group Filter··································································································· 9
Configuring Simulated Joining·········································································································· 10
Configuring IGMP Proxy··················································································································· 11
Removing Joined IGMP Groups from an Interface ·········································································· 12
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