Abstract :
The author proposes a solution for the allocation and balancing of resources to maximize available bandwidth shared among corporate users. Currently established broadband virtual private networks (BVPNs) based on asynchronous transfer mode (ATM) technology comprise ATM cross-connects (ATM-CCs) and a lot of intelligent customer premises equipment (CPE). The CPE, an intelligent ATM service switcher or ATM multiplexer, enables the corporate user to connect routers, private branch exchanges (PBXs), or codecs onto the ATM network. One fundamental characteristic of CPE is that it is capable of accumulating asynchronous and synchronous traffic which may belong to different corporate users´ sites. A typical example given of a BVPN configuration serving two corporate network users with four user sites each. In general, each user site needs to exchange asynchronous (connectionless) data streams for the inter-local area network (LAN) communication and synchronous (connection-oriented) data streams with constant bit rates for video/voice communication. The configuration and the performance aspects of inter-LAN communications employing a connectionless server (CLS) are discussed. The bandwidth allocation aspects of the BVPN having to convey synchronous and asynchronous traffic in an ATM environment without a CLS are discussed, including the bandwidth allocation algorithm. The important characteristics of the proposed algorithm is also summarised
Keywords :
LAN interconnection; asynchronous transfer mode; broadband networks; computer network management; network servers; performance evaluation; switching networks; telecommunication traffic; visual communication; voice communication; ATM cross-connects; ATM enterprise networks; ATM multiplexer; CPE; PBX; asynchronous traffic; asynchronous transfer mode; bandwidth allocation algorithm; broadband virtual private networks; codecs; connectionless server; customer premises equipment; data streams; intelligent ATM service switcher; interLAN communications; interlocal area network communication; performance management; private branch exchanges; resource allocation; routers; synchronous traffic; video/voice communication; Asynchronous transfer mode; Bandwidth; Channel allocation; Codecs; Intelligent networks; Multiplexing; Resource management; Streaming media; Telecommunication traffic; Virtual private networks;
