Televes OLT 769401, User Manual

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Up to 4096 configured Groups (Group List)
Up to1024 pairs of simultaneous Active Groups and Sources.
Up to 40 different Multicast Services
Up to 128 ONUs.
Up to 512 IGMP Clients per GPON port.
Up to 8 devices (eg. Setop boxes) per port GPON port
Up to 8 devices (eg. Setop boxes) per port Gbe port
2.8.2.2 IGMP Snooping/Proxy
The OLT system provides IP Multicast features by implementing an IGMP Proxy mechanism. For each Multicast Service it is defined the VLAN of the
client side and the VLAN that transports the IP Multicast Groups, so that all the IGMP packets with these VLANs are intercepted and delivered to
the processor to perform the following actions:
The first Join for a certain Group received from the client side will be translated to a Join on the Network side, using the OLT
Source MAC and Source IP;
The last Leave for a certain group received from the client side will be translated to a Leave on the Network side, using OLT
Source MAC and Source IP;
The OLT transmits periodical IGMP General Queries to the client side using the Multicast VLAN;
The OLT answers to IGMP General Queries received from the Network with all Multicast Groups active in the system
(requested by the clients and statically configured).
The OLT supports Static Multicast Groups, so that these groups are always present in the GPON interfaces even if no client demanded that Multicast
group. The OLT answers to the upstream Queries as these Groups are always in the OLT.