Configuration procedure ··························································································································· 47

Configuring IGMP proxying ······························································································································ 47

Enabling IGMP proxying ·························································································································· 48

Enabling multicast forwarding on a non-querier interface ········································································ 48

Configuring multicast load splitting on an IGMP proxy ············································································· 49

Configuring multicast access control ··············································································································· 49

Configuration prerequisites ······················································································································ 49

Enabling multicast access control ············································································································ 49

Configuring an IGMP user access policy ································································································· 50

Enabling per-session multicast forwarding ······························································································· 50

Configuring a VLAN-based static group member ····················································································· 51

Displaying and maintaining IGMP ···················································································································· 52

IGMP configuration examples ·························································································································· 52

Basic IGMP features configuration examples ·························································································· 52

IGMP SSM mapping configuration example ···························································································· 54

IGMP proxying configuration example ····································································································· 57

Multicast access control configuration example (for PPPoE) ··································································· 59

Multicast access control configuration example (for IPoE) ······································································ 63

Multicast access control configuration example (for Portal) ····································································· 68

Troubleshooting IGMP ····································································································································· 73

No membership information on the receiver-side router ·········································································· 73

Inconsistent membership information on the routers on the same subnet ··············································· 73

Configuring PIM ···························································································· 74

Overview ·························································································································································· 74

PIM-DM overview ····································································································································· 74

PIM-SM overview ····································································································································· 76

BIDIR-PIM overview ································································································································· 82

Administrative scoping overview ·············································································································· 85

PIM-SSM overview ··································································································································· 87

Relationship among PIM protocols ·········································································································· 88

PIM support for VPNs ······························································································································ 89

Protocols and standards ·························································································································· 89

Configuring PIM-DM ········································································································································ 89

PIM-DM configuration task list ················································································································· 90

Configuration prerequisites ······················································································································ 90

Enabling PIM-DM ····································································································································· 90

Enabling the state refresh feature ············································································································ 90

Configuring state refresh parameters ······································································································· 91

Configuring PIM-DM graft retry timer ······································································································· 91

Configuring PIM-SM ········································································································································· 92

PIM-SM configuration task list ·················································································································· 92

Configuration prerequisites ······················································································································ 92

Enabling PIM-SM ····································································································································· 92

Configuring an RP ···································································································································· 93

Configuring a BSR ··································································································································· 95

Configuring multicast source registration ································································································· 97

Configuring the switchover to SPT ··········································································································· 98

Configuring BIDIR-PIM ···································································································································· 98

BIDIR-PIM configuration task list ············································································································· 99

Configuration prerequisites ······················································································································ 99

Enabling BIDIR-PIM ································································································································· 99

Configuring an RP ·································································································································· 100

Configuring a BSR ································································································································· 102

Configuring PIM-SSM ···································································································································· 104

PIM-SSM configuration task list ············································································································· 104

Configuration prerequisites ···················································································································· 104

Enabling PIM-SM ··································································································································· 104

Configuring the SSM group range ·········································································································· 105

Configuring common PIM features ················································································································ 105