Browse Prior Art Database

Link Error Statics Gathering Mechanism

IP.com Disclosure Number: IPCOM000010985D
Original Publication Date: 2003-Feb-06
Included in the Prior Art Database: 2003-Feb-06

Publishing Venue

IBM

Abstract

Serial optical communications link errors are typically monitored using interrupts to microprocessors. This works well when a microprocessor is dedicated to the link, but in hardware state machine driven links (InterSystem Channel (ISC) used in zSeries z900 processors and InfiniBand channel adapters and switches), a new approach is required. This invention describes hardware state machines required to gather link error statistics with minimal processor involvement.