Troubleshooting IGMP snooping ·································································································································· 43
Appendix ········································································································································································ 44
Configuring multicast VLANs ····································································································································· 45
Overview ········································································································································································· 45
Configuration guidelines ······································································································································ 47
Configuration procedure ······································································································································ 47
Configuration prerequisites ·································································································································· 48
Overview ········································································································································································· 57
RPF check mechanism ··········································································································································· 57
Static multicast routes ············································································································································ 59
Multicast traceroute ··············································································································································· 61
Configuration task list ···················································································································································· 62
Enabling IP multicast routing ········································································································································· 62
Tracing a multicast path ······································································································································· 65
Configuration examples ················································································································································ 66
Changing an RPF route ········································································································································· 66
Creating an RPF route ··········································································································································· 68
Static multicast route failure ································································································································· 74
Configuring IGMP ······················································································································································ 76
Overview ········································································································································································· 76
IGMP versions ························································································································································ 76
Introduction to IGMPv1 ········································································································································· 76
Enhancements in IGMPv2····································································································································· 78
Enhancements in IGMPv3····································································································································· 78
IGMP SSM mapping ············································································································································· 80
IGMP proxying ······················································································································································ 81
Protocols and standards ······································································································································· 82
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