Abstract
The desire to switch ATM cells at high speed and forward data packets in a connectionless (CL) manner poses a challenging architectural difficulty that has not yet been satisfactorily resolved. This difficulty is mainly dire to lack of a packet concept in ATM switches - a packet is a level-3 abstraction. totally hidden from the switch. Switch-Borne Renter (SBR) is a proposed switch/router architecture that makes if possible to switch CL packets at very high speed using ATM technology. This paper introduces SBR and compares its performance with of her forwarding methods using a simulator. Compared to other methods, SBR allows for a significantly smaller number of open/close VC operations per second, has less buffering requirement, and achieves higher throughput. The same results hold using a real-life Internet packet trace as well as using traffic drawn from a synthetic workload generator.