MLD-Proxy

An MLD proxy is typically used for multicast IPTV on IPv6 Internet connections. Clients or IPTV set top boxes (STBs) on the local network send MLD messages to receive a specific TV channel. To this end, they join certain multicast groups and later leave them again. The router and/or MLD proxy receives the MLD messages and forwards them to the provider network and filters the groups, if required. The MLD proxy works for the local network with its clients.

An MLD proxy can also be used in simple multicast routing scenarios, for example via VPN, without having to use PIM. The configuration of the MLD proxy creates a static (tree) structure without alternative paths, redundancy or loop prevention. MLD proxies can be "cascaded" by connecting multiple routers in series.