Coupling facility for receiving commands from plurality of hosts for activating selected connection paths to I/O devices and maintaining status thereof
US5463736A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1994 |
| Grant date | Oct 31, 1995 |
| Priority date | — |
| Expiry date | Oct 18, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/90344
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A message path mechanism in a network having central processing complexes (CPCs) joined by message paths to a coupling facility. The coupling facility locates message paths for sending messages from one CPC to another and for sending messages between the coupling facility and one or more of the CPCs. A message path status table is provided having an entry for each of the message paths. Each entry has an indicator indicating whether its message path is active or inactive. multiple connections between the coupling facility and systems in the CPCs are registered in the coupling facility. Also provided is a mechanism for validating that each message path is connected properly such that if a message path is disconnected and then reconnected to a CPC, the validation mechanism insures that the message path has been reconnected correctly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.