ii
Multicast group policy does not work ······················································································· 40
Configuring multicast routing and forwarding ········································ 41
Overview ·································································································································· 41
RPF check mechanism ········································································································· 41
Static multicast routes ·········································································································· 43
Multicast forwarding across unicast subnets ············································································· 44
Command and hardware compatibility···························································································· 45
Configuration task list·················································································································· 45
Enabling IP multicast routing ········································································································ 46
Configuring multicast routing and forwarding ··················································································· 46
Configuring static multicast routes ·························································································· 46
Specifying the longest prefix match principle············································································· 47
Configuring multicast load splitting ·························································································· 47
Configuring a multicast forwarding boundary ············································································ 47
Configuring static multicast MAC address entries ······································································ 48
Enabling multicast forwarding between sub-VLANs of a super VLAN ··················································· 49
Displaying and maintaining multicast routing and forwarding ······························································ 49
Configuration examples ··············································································································· 51
Changing an RPF route ········································································································ 51
Creating an RPF route ········································································································· 53
Multicast forwarding over a GRE tunnel ··················································································· 55
Multicast forwarding over ADVPN tunnels ················································································ 58
Troubleshooting multicast routing and forwarding ············································································· 64
Static multicast route failure··································································································· 64
Configuring IGMP ··········································································· 65
Overview ·································································································································· 65
IGMPv1 overview ················································································································ 65
IGMPv2 enhancements ········································································································ 66
IGMPv3 enhancements ········································································································ 67
IGMP SSM mapping ············································································································ 68
IGMP proxying ···················································································································· 69
IGMP support for VPNs ········································································································ 70
Protocols and standards ······································································································· 70
IGMP configuration task list ·········································································································· 71
Configuring basic IGMP features ··································································································· 71
Enabling IGMP ··················································································································· 71
Specifying an IGMP version ·································································································· 72
Configuring a static group member ························································································· 72
Configuring a multicast group policy ························································································ 72
Adjusting IGMP performance ········································································································ 73
Configuring IGMP query and response parameters ···································································· 73
Enabling fast-leave processing ······························································································ 75
Configuring IGMP SSM mappings ································································································· 76
Configuration prerequisites···································································································· 76
Configuration procedure ······································································································· 76
Configuring IGMP proxying ·········································································································· 76
Configuration prerequisites···································································································· 76
Enabling IGMP proxying ······································································································· 76
Enabling multicast forwarding on a non-querier interface ···························································· 77
Configuring multicast load splitting on an IGMP proxy ································································ 77
Enabling IGMP NSR ··················································································································· 78
Displaying and maintaining IGMP ·································································································· 78
IGMP configuration examples ······································································································· 79
Basic IGMP features configuration examples ············································································ 79
IGMP SSM mapping configuration example·············································································· 81
IGMP proxying configuration example ····················································································· 84
Troubleshooting IGMP ················································································································ 86
No membership information on the receiver-side router ······························································ 86
Inconsistent membership information on the routers on the same subnet ······································· 86
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