Zte ZXR10 5900E Product Description page 108

ZXR10 5900E Product Description
As one of the key technologies of ZTE IPTV system architecture, controllable multicast is
mainly implemented at broadband access network side. The device implementing
multicast control policy (BRAS,DSLAM or switch) is called multicast controlling point. As
the terminating point of user multicast IGMP request, multicast controlling point decides
whether to duplicate multicast traffic to user port based on corresponding IGMP request
and control policy. The nearer multicast controlling point gets to the user, the more
network bandwidth can be saved. As a key device implementing multicast control policy,
multicast control point needs to support the following features: IGMP V1/V2, IGMP
Snooping, IGMP Filter, IGMP Proxy, IGMP Fast leave, MVR（Multicast VLAN Register）,
SGR（Static Group Register）, UGAC（User Group Access Control）, and UGAR（User
Group Access Record）. User demanding authorities are controlled by rules and channel
binding.
As shown in Figure, multicast controlling point is configured on aggregation device
ZXR10 5900E. It can establish multicast forwarding table items based on IGMP packets
to implement user access control configuration so as to implement preview, play control
of the channel and to implement IPTV demands of the users.
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