H3C Technologies H3C S7500E Series Switches - Manual (Page 341)

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z Configure any IPv6 unicast routing protocol so that all devices in the domain are interoperable at
the network layer.
z Enable IPv6 multicast routing.
Enabling MLD Proxying
You can enable MLD proxying on the interface in the direction toward the root of the multicast
forwarding tree to make the device serve as an MLD proxy.
Follow these steps to enable MLD proxying:
To do… Use the command… Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
—
Enable the MLD proxying feature mld proxying enable
Required
Disabled by default
z Each device can have only one interface serving as the MLD proxy interface.
z You cannot enable MLD on interfaces with MLD proxying enabled. Moreover, only the mld
require-router-alert, mld send-router-alert, and mld version commands can take effect on
such interfaces.
z You cannot enable other IPv6 multicast routing protocols (such as IPv6 PIM-DM or IPv6 PIM-SM)
on interfaces with MLD proxying enabled, or vice versa. However, the source-lifetime,
source-policy, and ssm-policy commands configured in IPv6 PIM view can still take effect.
z You cannot enable MLD proxying on a VLAN interface with MLD snooping enabled, or vice versa.
Configuring IPv6 Multicast Forwarding on a Downstream Interface
Typically, only queriers are able to forward IPv6 multicast traffic while non-queriers have no forwarding
capabilities, to avoid duplicate multicast flows. It is the same on MLD proxy devices. Only the
downstream interfaces acting as a querier can forward IPv6 multicast traffic to downstream hosts.
However, when a downstream interface of a proxy device fails to win the querier election, you need to
enable IPv6 multicast forwarding on this interface.
Follow these steps to enable IPv6 multicast forwarding on a downstream interface
To do… Use the command… Remarks
Enter system view system-view —