IGMP configuration task list ·········································································································································· 82

Configuring basic IGMP functions ······························································································································· 83

Enabling IGMP ······················································································································································ 83

Configuring IGMP versions ·································································································································· 83

Configuring static joining ····································································································································· 84

Configuring a multicast group filter ····················································································································· 84

Setting the maximum number of multicast groups that an interface can join ················································· 85

Adjusting IGMP performance ······································································································································· 85

Configuration prerequisites ·································································································································· 85

Configuring Router-Alert option handling methods ···························································································· 86

Configuring IGMP query and response parameters ·························································································· 87

Configuring IGMP fast-leave processing ············································································································ 89

Enabling the IGMP host tracking function ·········································································································· 89

Setting the DSCP value for IGMP messages ······································································································· 89

Configuring IGMP SSM mapping ································································································································ 90

Enabling SSM mapping ········································································································································ 90

Configuring SSM mappings ································································································································· 90

Configuring IGMP proxying ········································································································································· 90

Enabling IGMP proxying ······································································································································ 91

Configuring multicast forwarding on a downstream interface ········································································· 91

Displaying and maintaining IGMP ······························································································································· 92

IGMP configuration examples ······································································································································ 93

Basic IGMP functions configuration example ····································································································· 93

SSM mapping configuration example ················································································································ 95

IGMP proxying configuration example ··············································································································· 98

Troubleshooting IGMP ················································································································································· 100

No membership information on the receiver-side router ················································································· 100

Inconsistent memberships on routers on the same subnet ··············································································· 101

Configuring PIM ······················································································································································ 102

PIM overview ································································································································································ 102

PIM-DM overview ················································································································································ 102

PIM-SM overview ················································································································································· 105

Administrative scoping overview ······················································································································· 110

PIM-SSM overview ··············································································································································· 112

Relationships among PIM protocols ·················································································································· 113

Protocols and standards ····································································································································· 114

Configuring PIM-DM ···················································································································································· 114

PIM-DM configuration task list···························································································································· 114

Enabling PIM-DM ················································································································································· 115

Enabling state-refresh capability ························································································································ 115

Configuring state-refresh parameters ················································································································ 115

Configuring PIM-DM graft retry period ············································································································· 116

Configuring PIM-SM····················································································································································· 117

PIM-SM configuration task list ···························································································································· 117

Enabling PIM-SM ················································································································································· 118

Configuring an RP ··············································································································································· 118

Configuring a BSR ··············································································································································· 120

Configuring administrative scoping ·················································································································· 124

Configuring multicast source registration·········································································································· 126

Disabling the switchover to SPT ························································································································· 127

Configuring PIM-SSM ·················································································································································· 127

PIM-SSM configuration task list ·························································································································· 127

iii