- 专利标题: Flexible and scalable data link layer flow control for network fabrics
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申请号: US13334116申请日: 2011-12-22
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公开(公告)号: US20130166773A1公开(公告)日: 2013-06-27
- 发明人: William J. Armstrong , Claude Basso , Chih-Jen Chang , Mircea Gusat , Jeffrey J. Lynch , Cyriel J. Minkenberg , Kenneth M. Valk
- 申请人: William J. Armstrong , Claude Basso , Chih-Jen Chang , Mircea Gusat , Jeffrey J. Lynch , Cyriel J. Minkenberg , Kenneth M. Valk
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 主分类号: G06F15/16
- IPC分类号: G06F15/16
摘要:
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.