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28 NTU Optical Network Terminals
The bri blocks are the objects of the 2nd level and operate as bridges between the LAN and WAN
interfaces to include the interface into one group. The br1 block is connected to the veip0.1 interface, which
operates in the PPPoE mode, and to the eth0 port. The br2, br3 blocks operate as a bridge, which allows
transparent traffic transmission to the LAN ports of the router.
The eth0..1 blocks represent LAN interfaces for connection of subscriber’s equipment.
Fig. 17—Architecture of the Device Configured for Triple Play Model 2 Services
The difference between the models is the GEM4095 block, which is a logical terminal of the GEM port for
broadcasting. It broadcasts traffic downstream. Broadcast packets are sent from the GEM4095 block to
WANConnectionDevice and then are further transmitted to bri according to VLAN ID.
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