Protocols and standards, Mld snooping configuration task list – H3C Technologies H3C WX3000E Series Wireless Switches User Manual

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MLD message Actions

Multicast-addres
s-specific query

In response to the MLD group-specific query for a certain IPv6 multicast group, the proxy
sends the report to the group out all router ports if the forwarding entry for the group still
contains a member port.

Report

When receiving a report for an IPv6 multicast group, the proxy looks up the multicast
forwarding table for the entry for the multicast group. If the forwarding entry is found with

the receiving port contained as a dynamic port in the outgoing port list, the proxy resets the

aging timer for the entry. If the forwarding entry is found but the outgoing port list does not
include the receiving port, the proxy adds the port to the outgoing port list as a dynamic

member port and starts an aging timer for it. If no forwarding entry is found, the proxy

creates the entry, adds the receiving port to the outgoing port list as a dynamic member port

and starts an aging timer for the port. Then, it sends a report to the group out all router ports.

Done

In response to a done message for an IPv6 multicast group, the proxy sends a
multicast-address-specific query for the group out the receiving port. After making sure that
no member port is contained in the forwarding entry for the IPv6 multicast group, the proxy

sends a done message for the group out all router ports.

Protocols and standards

RFC 4541, Considerations for Internet Group Management Protocol (IGMP) and Multicast Listener

Discovery (MLD) Snooping Switches

MLD snooping configuration task list

Task

Remarks

Configuring basic functions of
MLD snooping

Enabling MLD snooping

Required

Configuring the MLD snooping version

Optional