HP MSR2000/3000/4000 Router Series IP Multicast Configuration Guide

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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 ······························································································································ 13
Configuring IGMP snooping ····································································································································· 14
Feature and hardware compatibility ···························································································································· 14
Overview ········································································································································································· 14
Basic IGMP snooping concepts ··························································································································· 15
How IGMP snooping works ································································································································· 16
Protocols and standards ······································································································································· 18
IGMP snooping configuration task list ························································································································· 18
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 ································································································· 23
Configuring IGMP snooping policies ··························································································································· 23
Configuring a multicast group filter ····················································································································· 23
Setting the maximum number of multicast groups on a port ············································································ 24
Enabling the multicast group replacement function ··························································································· 25
Displaying and maintaining IGMP snooping ·············································································································· 25
Static port configuration example ································································································································ 27
Network requirements ··········································································································································· 27
Configuration procedure ······································································································································ 28
Verifying the configuration ··································································································································· 29
Troubleshooting IGMP snooping ·································································································································· 30
Layer 2 multicast forwarding cannot function ···································································································· 30
Configuring multicast routing and forwarding ········································································································· 31
Overview ········································································································································································· 31
RPF check mechanism ··········································································································································· 31
Static multicast routes ············································································································································ 33
Multicast forwarding across unicast subnets ······································································································ 35
Configuration task list ···················································································································································· 35
Enabling IP multicast routing ········································································································································· 36