The evolution from LAN/MAN to broadband ISDN

Abstract

High speed data communication is widely seen as one of the main driving forces towards broadband networks. Local Area Networks (LAN) are commonly used and the next generation of LANs, the Metropolitan Area Networks (MAN) are in the introductory phase. To serve short-term communication demands, the use of MANs is also planned in the public network. Broadband ISDN (BISDN), where first trials are expected within the next few years, will offer ideal means to interconnect both, LANs as well as MANS without any restrictions in dis- tance.This paper presents the evolutionary path for the interconnection of data communication systems (based on LANs) first via MAN and later on (as soon as available) via the BISDN. As the BISDN aims at the integration of a conne~ti~nles~ service with connection-oriented services, a smooth evolution can be expected. MANs emerge for these services to become a part of the BISDN, maintaining the already installed equipment.

Request rate control for QA services in DQDB/SMDS-ATM gateways

“…The different issues in interconnecting high-speed networks are discussed in References 1-7. The main challenge in DQDB-ATM internetting [8][9][10][11][12][13] is to support connectionless traffic effectively. A virtual connection has to be established in the ATM side before the connectionless data can be submitted.…”

Lan interconnection via ATM networks using the reverse multiplexing technique

“…Due to the bursty nature and high bandwidth requirement of LAN/MAN traffic streams, ATM networks, with or without connectionless servers, are considered to be suitable for such an application. There has been much [4,5,9,11,17,19] dedicated to this area using either point-to-point virtual channel connections between LAN gateways or the connectionless servers within the ATM networks. However, as pointed out by many researchers, the highly bursty nature of LAN traffic, especially for those streams generated by file transfer or image data transfer, has significant impacts on the Quality of Service of ATM networks.…”