Buffering registered state change notifications to reduce traffic during large fabric changes
US7633881B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2005 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | May 18, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/505
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The buffering of RSCN frames is disclosed so that RSCN traffic can be reduced. At the start of a state change notification period, a timer is started. A state change manager buffers state changes in a register that holds a pending RSCN frame by storing the address of each changed device. When a new state change is received, the address of the corresponding device is compared against each of the addresses currently stored in the buffered RSCN frame. If a duplicate address is found, the searching process ends. If no duplicate address is found, then the new address is added to the next available 32-bit field in the buffered RSCN frame. When a specified number of state changes have been received, or a specified amount of time has elapsed, the RSCN frame is sent to each initiator that had previously registered to receive state changes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.