Adaptive allocation of headroom in network devices
US9699095B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2015 |
| Grant date | Jul 4, 2017 |
| Priority date | — |
| Expiry date | May 31, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/104
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Communication apparatus includes multiple ports for connection to a packet data network. A memory contains, for each port, a respective first, fixed headroom allocation to hold packets received from the network through the port and to contain a shared headroom buffer, which is available to be shared among a plurality of the ports. Flow-control logic allocates to each of the ports, within the shared headroom buffer, a respective second, variable headroom allocation, which varies responsively to fill levels of the respective first headroom allocation and of the shared headroom buffer, thereby defining, for each of the ports, a respective total headroom allocation comprising the respective first and second headroom allocations. The logic is configured to apply flow-control operations in response to the packets received from the network through each port responsively to a total fill level of the respective total headroom allocation of the port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.