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Browse Prior Art Database

Request Hierarchy in a Closed Ring Environment

IP.com Disclosure Number: IPCOM000045427D
Original Publication Date: 1983-Mar-01
Included in the Prior Art Database: 2005-Feb-07

Publishing Venue

IBM

Related People

Authors:
Lanier, CS Maxwell, HM McKay, RE Weiss, L [+details]

Abstract

In certain distributed data processing systems, data processing stations such as A-H (see illustration) intercommunicate on a peer to peer basis in closed-ring network structures. Communications are structured in frames recognizable (from header information) as service request frames and data frames. Frames which are directed to specific destinations are either received at the destination station, and so indicated by an ackowledgement frame passed along the ring, or refused (negatively acknowledged as unreceivable) because of traffic build-up, etc., or returned without any response. Frames returned without response are removed from the ring by the transmitting station and may be subsequently regenerated and retransmitted under software control. Frames which are negatively acknowledged may be similarly retransmitted.