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Introduction to IP switching

Switching is a bottleneck for implementing a broadband end to end network. In a broadband network switching has to provide

Internet is viewed as the prototype for the future Information Superhighway. The current Internet technology has, however, a number of drawbacks including

A remarkable advantage provided by the Internet is isolation of the network from services by the IP layer.

For overcoming the switching capacity shortfall, it has been suggested that the Internet should be boosted by building its backbone using ATM technology. This has raised the issue of how to optimally put the IP -protocol on top of ATM. The Internet Engineering Task Force (IETF) and ATM-Forum have proposed solutions such as Classical IP over ATM, LAN emulation (LANE) and the Multi Protocol over ATM (MPOA). All of these solutions have their advantages and drawbacks.

Most recent solution to map IP on top of ATM comes from a small US company, IPSILON. After IPSILON a number of companies and individuals (CISCO - Tag switching, Toshiba, IBM and SITA - Juha Heinänen) have proposed other adaptive algorithms for the purpose of mapping ATM network resources dynamically to the current traffic profile.

The idea of IP switching has gained wide acceptance in the industry (Digital, LM Ericsson, Nokia etc.).

The COST 257 project initiated by VTT and our laboratory for 1997 will study the IPSILON solution mainly from the point of view of traffic theory.

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Sivua on viimeksi päivitetty 11.03.1997 13:45.
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