iii
Introduction to IGMPv1 ········································································································································· 81
Enhancements in IGMPv2····································································································································· 83
Enhancements in IGMPv3····································································································································· 83
IGMP SSM mapping ············································································································································· 85
IGMP proxying ······················································································································································ 86
IGMP support for VPNs ········································································································································ 87
Protocols and standards ······································································································································· 87
IGMP configuration task list ·········································································································································· 87
Configuring basic IGMP functions ······························································································································· 88
Enabling IGMP ······················································································································································ 88
Configuring IGMP versions ·································································································································· 89
Configuring static joining ····································································································································· 90
Configuring a multicast group filter ····················································································································· 90
Setting the maximum number of multicast groups that an interface can join ················································· 91
Adjusting IGMP performance ······································································································································· 91
Configuring Router-Alert option handling methods ···························································································· 91
Configuring IGMP query and response parameters ·························································································· 92
Configuring IGMP fast-leave processing ············································································································ 94
Enabling the IGMP host tracking function ·········································································································· 95
Configuring IGMP SSM mapping ································································································································ 96
Enabling SSM mapping ········································································································································ 96
Configuring SSM mappings ································································································································· 96
Configuring IGMP proxying ········································································································································· 97
Enabling IGMP proxying ······································································································································ 97
Configuring multicast forwarding on a downstream interface ········································································· 98
Displaying and maintaining IGMP ······························································································································· 98
IGMP configuration examples ···································································································································· 100
Basic IGMP functions configuration example ··································································································· 100
SSM mapping configuration example ·············································································································· 102
IGMP proxying configuration example ············································································································· 105
Troubleshooting IGMP ················································································································································· 107
No membership information on the receiver-side switch ················································································ 107
Inconsistent memberships on switches on the same subnet ············································································ 108
Configuring PIM ······················································································································································ 109
Overview ······································································································································································· 109
PIM-DM overview ················································································································································ 109
PIM-SM overview ················································································································································· 112
BIDIR-PIM overview ·············································································································································· 117
Administrative scoping overview ······················································································································· 120
PIM-SSM overview ··············································································································································· 122
Relationship among PIM protocols ···················································································································· 123
PIM support for VPNs ·········································································································································· 124
Protocols and standards ····································································································································· 124
Configuring PIM-DM ···················································································································································· 125
PIM-DM configuration task list···························································································································· 125
Configuration prerequisites ································································································································ 125
Enabling PIM-DM ················································································································································· 125
Enabling state-refresh capability ························································································································ 126
Configuring state-refresh parameters ················································································································ 127
Configuring PIM-DM graft retry period ············································································································· 127
Configuring PIM-SM····················································································································································· 128
PIM-SM configuration task list ···························································································································· 128
Configuration prerequisites ································································································································ 128
Enabling PIM-SM ················································································································································· 129
