Dell PowerSwitch S4112F-ON EMC SmartFabric OS10 User Guide Release 10.5.1 - Page 846
Multicast Listener Discovery Protocol, MLD snooping
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Example (with VLAN) Supported Releases vlan3035 vlan3036 vlan3037 vlan3038 vlan3039 vlan3040 vlan3041 vlan3042 vlan3043 vlan3044 vlan3045 vlan3046 vlan3047 vlan3048 vlan3049 vlan3050 vlan3051 vlan3052 --more-- port-channel31 port-channel31 port-channel31 port-channel31 port-channel31 port-channel31 port-channel31 port-channel31 port-channel31 port-channel31 port-channel31 port-channel31 port-channel31 port-channel31 port-channel31 port-channel31 port-channel31 port-channel31 OS10# show ip igmp snooping mrouter vlan 3031 Interface Router Ports vlan3031 port-channel31 10.4.0E(R1) or later Multicast Listener Discovery Protocol IPv6 networks use Multicast Listener Discovery (MLD) Protocol to manage multicast groups. OS10 supports MLDv1and MLDv2 to manage the multicast group memberships on IPv6 networks. MLD snooping MLD snooping enables switches to use the information in MLD packets and generate a forwarding table that associates ports with multicast groups. When switches receive multicast frames, they forward them to their intended receivers. OS10 supports MLD snooping on VLAN interfaces. Effective with OS10 release 10.4.3.0, MLD snooping is enabled by default. Configure MLD snooping ● Enable MLD snooping globally with the ipv6 mld snooping enable command in the CONFIGURATION mode. This command enables both MLDv2 and MLDv1 snooping on all VLAN interfaces. ● (Optional) You can disable MLD snooping on specific VLAN interfaces using the no ipv6 mld snooping command in the VLAN INTERFACE mode. ● (Optional) Multicast flood control is enabled by default. To disable the multicast flood restrict feature, use the no multicast snooping flood-restrict command in CONFIGURATION mode. To reenable the feature globally, use the ip igmp snooping enable command in CONFIGURATION mode. ● In a network, the snooping switch is connected to a multicast Router that sends MLD queries. On a Layer 2 network that does not have a multicast router, you can configure the snooping switch to act as querier. Use the ipv6 mld snooping querier command in the VLAN INTERFACE mode to send the queries. ● OS10 learns the multicast router interface dynamically based on the interface on which MLD membership query is received. To assign a multicast router interface statically, use the ipv6 mld snooping mrouter interface interface- type command in VLAN INTERFACE mode. ● (Optional) Configure the MLD version using the ipv6 mld version version-number command in the VLAN INTERFACE mode. ● (Optional) The fast leave option allows the MLD snooping switch to remove an interface from the multicast group immediately on receiving the leave message. Enable fast leave with the ipv6 mld snooping fast-leave command in VLAN INTERFACE mode. 846 Multicast
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