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Scheme for Providing Fair Port ID Allocation in a Switch Fabric

IP.com Disclosure Number: IPCOM000012667D
Original Publication Date: 2003-May-19
Included in the Prior Art Database: 2003-May-19

Publishing Venue

IBM

Abstract

A Fibrechannel Fabric may have the capability of assigning more than one address identifier (N_Port ID) to each N_Port to which it is attached. Additional N_Port IDs are assigned by the Fabric upon request from the attached N_Ports. Since the total number of N_Port IDs assignable by a Fabric is limited, a scheme which prevents any single N_Port from obtaining more than it's fair share of N_Port IDs is described. Use of the scheme described here also guarantees that each N_Port will be able to obtain a sufficient number of N_Port IDs in order to operate effectively.