System and method for synchronizing switch fabric backplane link management credit counters
US7304987B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2003 |
| Grant date | Dec 4, 2007 |
| Priority date | — |
| Expiry date | Dec 21, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/503
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method are provided for resynchronizing backplane link management credit counters in a packet communications switch fabric. The method comprises: at an input port card ingress port, accepting information packets including cells and cell headers with destination information; modifying the destination information in the received cell headers; routing information packets between the input port card and output port cards on backplane data links through an intervening crossbar; at the input port card, maintaining a credit counter for each output port card channel; decrementing the counter in response to transmitting cells from the input port card; generating credits in response to transmitting cells from an output port card channel; sending the generated credits to increment the counter, using the modified destination information; and, using the generated credit flow to resynchronize the credit counter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.