Transmit-buffer management for priority-based flow control
US8520522B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2010 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Jul 20, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/30
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network device operating in operating in a Priority Flow Control (PFC) mode receives a stream of packets for outputting on a particular port, assigns each packet in the stream of packets to one of multiple buffer queues associated with the port, and generates, based on the assigning, packet counts for the multiple buffer queues. The network device aggregates the packet counts for a group of particular buffer queues, of the multiple buffer queues, that are not subject to a PFC restriction, to create an unrestricted aggregated count. The network device determines whether the unrestricted aggregated count exceeds a flow-control threshold for the group of particular buffer queues and sends, to an upstream queue scheduler, a flow control signal when the unrestricted aggregated count exceeds a flow-control threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.