Protocols And Standards; Mld Configuration Task List - H3C S5500-EI Configuration Manual

As shown in
Upstream interface—Also called the "proxy interface." A proxy interface is an interface on which
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MLD proxying is configured. It is in the direction toward the root of the multicast forwarding tree. An
upstream interface acts as a host that is running MLD, and is also called a "host interface."
Downstream interface—An interface that is running MLD and not in the direction toward the root of
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the multicast forwarding tree. A downstream interface acts as a router that is running MLD, and is
also called a "router interface."
A device with MLD proxying configured maintains a group membership database, which stores the
group memberships on all the downstream interfaces in this database. Each entry comprises the multicast
address, filter mode, and source list. Such an entry is a collection of members in the same multicast group
on each downstream interface.
A proxy device performs host functions on the upstream interface based on the database. It responds to
the queries according to the information in the database or sends join/leave messages when the
database changes. The proxy device performs router functions on the downstream interfaces by
participating in the querier election, sending queries, and maintaining memberships based on the
reports.

Protocols and standards

• RFC 2710, Multicast Listener Discovery (MLD) for IPv6
RFC 3810, Multicast Listener Discovery Version 2 (MLDv2) for IPv6
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RFC 4605, Internet Group Management Protocol (IGMP)/Multicast Listener Discovery (MLD)-Based
•
Multicast Forwarding ("IGMP/MLD Proxying")

MLD configuration task list

Task
Configuring basic MLD functions
Adjusting MLD performance
Figure 88, an MLD proxy device has the following types of interfaces:
Enabling MLD
Configuring the MLD version
Configuring static joining
Configuring an IPv6 multicast group filter
Setting the maximum number of IPv6 multicast
groups that an interface can join
Configuring Router-Alert option handling
methods
Configuring MLD query and response
parameters
Configuring MLD fast-leave processing
Enabling the MLD host tracking function
Setting the DSCP value for MLD messages
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Remarks
Required
Option
Optional
Optional
Optional
Optional
Optional
Optional
Optional
Optional