Invention Grant
- Patent Title: Flexible and scalable data link layer flow control for network fabrics
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Application No.: US13334116Application Date: 2011-12-22
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Publication No.: US09231870B2Publication Date: 2016-01-05
- Inventor: William J. Armstrong , Claude Basso , Chih-Jen Chang , Mircea Gusat , Jeffrey J. Lynch , Cyriel J. Minkenberg , Kenneth M. Valk
- Applicant: William J. Armstrong , Claude Basso , Chih-Jen Chang , Mircea Gusat , Jeffrey J. Lynch , Cyriel J. Minkenberg , Kenneth M. Valk
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Patterson & Sheridan, LLP
- Main IPC: G06F15/16
- IPC: G06F15/16 ; H04L12/801 ; H04L12/46 ; H04L12/825

Abstract:
A network fabric may divide a physical connection into a plurality of VLANs as defined by IEEE 802.1Q. Moreover, many network fabrics use Priority Flow Control to identify and segregate network traffic based on different traffic classes or priorities. Current routing protocols define only eight traffic classes. In contrast, a network fabric may contain thousands of unique VLANs. When network congestion occurs, network devices (e.g., switches, bridges, routers, servers, etc.) can negotiate to pause the network traffic associated with one of the different traffic classes. Pausing the data packets associated with a single traffic class may also stop the data packets associated with thousands of VLANs. The embodiments disclosed herein permit a network fabric to individually pause VLANs rather than entire traffic classes.
Public/Granted literature
- US20130166773A1 Flexible and scalable data link layer flow control for network fabrics Public/Granted day:2013-06-27
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