Netgear XSM4324FS Software Administration Manual Software Version 12.x - Page 657
MLD Snooping, CLI: Con MLD Snooping
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M4300 Series and M4300-96X Fully Managed Switches MLD Snooping In IPv4, Layer 2 switches can use IGMP snooping to limit the flooding of multicast traffic by dynamically configuring Layer 2 interfaces so that multicast traffic is forwarded to only those interfaces associated with IP multicast address. In IPv6, MLD snooping performs a similar function. With MLD snooping, IPv6 multicast data is selectively forwarded to a list of ports that want to receive the data, instead of being flooded to all ports in a VLAN. This list is constructed by snooping IPv6 multicast control packets. MLD is a protocol used by IPv6 multicast routers to discover the presence of multicast listeners (nodes configured to receive IPv6 multicast packets) on its directly attached links and to discover which multicast packets are of interest to neighboring nodes. MLD is derived from IGMP; MLD version 1 (MLDv1) is equivalent to IGMPv2, and MLD version 2 (MLDv2) is equivalent to IGMPv3. MLD is a subprotocol of Internet Control Message Protocol version 6 (ICMPv6), and MLD messages are a subset of ICMPv6 messages, identified in IPv6 packets by a preceding Next Header value of 58. The switch can snoop on both MLDv1 and MLDv2 protocol packets and bridge IPv6 multicast data based on destination IPv6 multicast MAC addresses. The switch can be configured to perform MLD snooping and IGMP snooping simultaneously. CLI: Configure MLD Snooping 1. Enter the following commands. (Netgear Switch) #vlan da (Netgear Switch) (Vlan)#vlan 300 (Netgear Switch) (Vlan)#exit (Netgear Switch) #config (Netgear Switch) (Config)#interface 1/0/1 (Netgear Switch) (Interface 1/0/1)#vlan participation include 300 (Netgear Switch) (Interface 1/0/1)#vlan pvid 300 (Netgear Switch) (Interface 1/0/1)#exit (Netgear Switch) (Config)#interface 1/0/24 (Netgear Switch) (Interface 1/0/24)#vlan participation include 300 (Netgear Switch) (Interface 1/0/24)#vlan pvid 300 (Netgear Switch) (Interface 1/0/24)#exit (Netgear Switch) (Config)#exit (Netgear Switch) (Config)#set mld (Netgear Switch) (Config)#exit (Netgear Switch) #vlan database (Netgear Switch) (Vlan)#set mld 300 (Netgear Switch) (Vlan)#exit MLD 657 Software Administration Manual
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