ii
Troubleshooting PIM snooping ························································································································ 42
PIM snooping does not work on a Layer 2 device ··················································································· 42
Configuring multicast VLANs ········································································ 43
Overview ·························································································································································· 43
Multicast VLAN configuration task list ·············································································································· 45
Configuring a sub-VLAN-based multicast VLAN ······························································································ 45
Configuration prerequisites ······················································································································ 45
Configuration guidelines ··························································································································· 45
Configuration procedure ··························································································································· 45
Configuring a port-based multicast VLAN ········································································································ 46
Configuration prerequisites ······················································································································ 46
Configuring user port attributes ················································································································ 46
Assigning user ports to a multicast VLAN ································································································ 46
Setting the maximum number of multicast VLAN forwarding entries ······························································· 47
Displaying and maintaining multicast VLANs ··································································································· 47
Multicast VLAN configuration examples ·········································································································· 48
Sub-VLAN-based multicast VLAN configuration example ······································································· 48
Port-based multicast VLAN configuration example ·················································································· 50
Configuring MLD snooping ··········································································· 54
Overview ·························································································································································· 54
Basic MLD snooping concepts ················································································································· 54
How MLD snooping works ······················································································································· 56
Protocols and standards ·························································································································· 57
MLD snooping configuration task list ··············································································································· 57
Configuring basic MLD snooping features ······································································································· 58
Enabling MLD snooping ··························································································································· 58
Specifying an MLD snooping version ······································································································· 58
Setting the maximum number of MLD snooping forwarding entries ························································ 59
Configuring MLD snooping port features ········································································································· 60
Setting aging timers for dynamic ports ····································································································· 60
Configuring static ports ···························································································································· 60
Configuring a port as a simulated member host ······················································································ 61
Enabling fast-leave processing ················································································································ 61
Disabling a port from becoming a dynamic router port ············································································ 62
Configuring the MLD snooping querier ············································································································ 63
Configuration prerequisites ······················································································································ 63
Enabling the MLD snooping querier ········································································································· 63
Configuring parameters for MLD queries and responses ········································································ 63
Configuring parameters for MLD messages ···································································································· 64
Configuration prerequisites ······················································································································ 64
Configuring source IPv6 addresses for MLD messages ·········································································· 65
Setting the 802.1p priority for MLD messages ························································································· 66
Configuring MLD snooping policies ················································································································· 66
Configuring an IPv6 multicast group policy ······························································································ 66
Configuring IPv6 multicast source port filtering ························································································ 67
Enabling dropping unknown IPv6 multicast data ····················································································· 67
Enabling MLD report suppression ············································································································ 68
Setting the maximum number of IPv6 multicast groups on a port ···························································· 68
Enabling IPv6 multicast group replacement ····························································································· 69
Displaying and maintaining MLD snooping ······································································································ 69
MLD snooping configuration examples ············································································································ 70
IPv6 group policy and simulated joining configuration example (for VLANs) ··········································· 70
Static port configuration example ············································································································· 72
MLD snooping querier configuration example ·························································································· 75
Troubleshooting MLD snooping ······················································································································· 78
Layer 2 multicast forwarding cannot function ··························································································· 78
IPv6 multicast group policy does not work ······························································································· 78
Configuring IPv6 PIM snooping ···································································· 79
Overview ·························································································································································· 79
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