A broad-band packet switch for multi-service communications

An investigation is presented of the performance, for multiservice traffic, of a high-capacity, fast packet switch based on a nonbuffered, multistage interconnection network, implemented from identical LSI switching elements. It is shown that for an implementation operating at 30 Mb/s, switches with a total traffic capacity of up to 50 Gb/s can be constructed. If the voice class traffic load is limited on each switch port to a maximum of 80% of saturation, a maximum delay across the switch of on the order of 200 μs can be guaranteed, for every voice-class connection, regardless of the total traffic load on the switch