Large Capacity Multiplex-Port Brouter with SDH Interface for Regional PC Communication Network System

概要

論文の詳細を見る
This paper describes research on a cost-effective regional Personal-Computer (PC) communication network system based on Fiber-to-the-Home (FTTH) systems and examines its realization. A small scale prototype experimental system was developed and tested in a home-use trial. This paper specifically discusses a sophisticated system architecture with a newly developed multiplex-port brouter (bridging router) based on the experimental system. The system provides a LAN environment and group communication services to the customers. The Low-end Card (LEC), which provides the popular Ethernet interface (10Base-T), is set up in the subscriber household. The leased circuits are connected between the LEC and the brouter. The LEC and the brouter are controlled by the management server to function as a group communication system. The brouter, which has a multiplex subscriber-port interface, must accommodate many customers in a cost effective manner. This paper presents the system design of a multiplex-port brouter with an SDH/SONET interface. Two types of interface cards at 150 Mbit/s and 50Mbit/s are prepared making the system scalable. The brouter can accommodate up to 2,700 subscribers. The subscriber channel rate can be set from 64 Kbit/s to 1.5 Mbit/s. Ethernet packets from the PCs are transferred through each subscriber channel between the LEC and the brouter using the High-level Data Link Control (HDLC) protocol. Custom circuits are applied to achieve high-speed HDLC processing for the multiplexed signals. A group communication mechanism based on packet filtering via MAC addresses of PCs is also presented. The implementation of a group management function into the brouter and the customer-premises LEC is discussed in terms of subscriber traffic and the required complexity. The Ethernet packets are filtered by the brouter to eliminate all packets except those from/to members of the same group. The traffic reduction effect caused by the brouter is estimated from the experimental results.
1997-07-25

Large Capacity Multiplex-Port Brouter with SDH Interface for Regional PC Communication Network System

スポンサーリンク

概要

著者

関連論文

スポンサーリンク