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Configuring MLD Proxy
ipv6 mld-proxy
Copyright © 2010, Juniper Networks, Inc.
Figure 20: Upstream and Downstream Interfaces
As described in "Overview" on page 180, hosts interact with the router through the exchange
of MLD messages. Similarly, when you configure MLD proxy, the router interacts with the
router on its upstream interface through the exchange of MLD messages. However, when
acting as the proxy, the router performs the host portion of the MLD task on the upstream
interface as follows:
When queried, sends multicast listener reports to the group.
When one of its hosts joins a multicast address group to which none of its other hosts
belong, sends unsolicited multicast listener reports to that group.
When the last of its hosts in a particular multicast group leaves, the group sends either
an unsolicited multicast listener done report to the all-routers address (FF02::2) for
MLDv1 or an MLDv2 multicast listener report to the all-MLDv2 routers address (FF02::16).
To configure a downstream interface, enable MLD on that interface. To configure MLD
proxy on the router, complete the following tasks:
Enable IPv6 multicast.
1.
Identify the interface that you want to act as the upstream interface.
2.
Enable MLD proxy on that interface.
3.
(Optional) Specify how often the router should send unsolicited reports to routers on
4.
the upstream interface.
Use to enable MLD proxy on an interface.
The interface for which you enable MLD proxy is the upstream interface.
NOTE: You can enable only one upstream interface.
Chapter 6: Configuring Multicast Listener Discovery
205
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