Systems and methods for hardware accelerated metering for openflow protocol
US10084719B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2015 |
| Grant date | Sep 25, 2018 |
| Priority date | — |
| Expiry date | Jun 23, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/623
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A new approach is proposed that contemplates systems and methods to support hardware-based Quality of Service (QoS) operations, which offloads metering functionalities under OpenFlow protocol to a programmable hardware unit/block/component. The hardware unit supports several hardware implemented ports and each port supports multiple configurable queues for the packet flows through a network switch/chip/system. Specifically, the hardware unit includes a plurality of descriptor queues (DQs) configured to accept requests to send a plurality of packets from one or more CPU cores, and a plurality of condition and schedule modules configured to meter, schedule, and condition the packets through a hierarchy of scheduling queues under one or more metering constraints. The hardware unit is programmable to configure the byte-based and/or packet-based rate-limit for each of the packet flows with a calculated adjustment on allowed variations without requiring complex QoS algorithms to maintain the rate-limits of the flows.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.