Mld Snooping; Mld Snooping Introduction; Mld Snooping Configuration Task - SMC Networks ES4704BD Manual

Chassis core routing switch

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18.4 MLD Snooping

MLD, the Multicast Listener Discovery Protocol, is used to realize multicasting in the

IPv6. MLD is used by the network equipments such as routers which supports multicast

for multicast listener discovery, also used by listeners looking forward to join certain

multicast group informing the router to receive data packets from certain multicast

address, all of which are done through MLD message exchange. First the router send an

MLD Multicast listener Query message through a multicast address which can address

all the listeners (namely ff02::1). Once there is a listener who wishes to join the multicast

address, it will send a MLD Multicast listener Report back through the multicast address.

MLD Snooping is namely the MLD listening. The switch restricts the multicast traffic

from flooding through MLD Snooping, and forward the multicast traffic to ports associated

to multicast devices only. The switch listens to the MLD messages between multicast

routers and listeners, and maintains the multicast group forwarding list based on the

listening result. The switches forwards multicast packets according to the multicast

forwarding list

The switch realizes the MLD Snooping function while supporting MLD v2. This way,

the user can acquire IPv6 multicast with the switch.

1. Enable the MLD Snooping function

2. Configure the MLD Snooping

1. Enable the MLD Snooping function

ipv6 mld snooping

no ipv6 mld snooping

2. Configure MLD Snooping

Enable global MLD Snooping, the "no ipv6 mld

snooping" command disables the global MLD

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