System and method to identify and communicate congested flows in a network fabric
US7957293B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 22, 2010 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Jan 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention provides a system and method for identifying and communicating congested paths throughout a network fabric. Briefly, the present invention augments the congestion management mechanism defined in ASI to allow for the communication of congested paths through the fabric, rather than the simple congested output port notification supported today through the use of DLLPs. Further, it also uses the communication mechanisms already defined in the ASI specification to implement this additional capability. Specifically, the present invention uses Transaction Layer Packets (TLPs) to communicate the information concerning congested flows throughout the network. This packet type allows the inclusion of much more information than DLLPs, allowing a more comprehensive and elegant solution to the issue of congestion management in an Advanced Switching network fabric.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.