发明授权
US06952424B1 Method and system for network processor scheduling outputs using queueing
失效
使用排队的网络处理器调度输出的方法和系统
- 专利标题: Method and system for network processor scheduling outputs using queueing
- 专利标题(中): 使用排队的网络处理器调度输出的方法和系统
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申请号: US09548912申请日: 2000-04-13
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公开(公告)号: US06952424B1公开(公告)日: 2005-10-04
- 发明人: Brian Mitchell Bass , Jean Louis Calvignac , Marco C. Heddes , Michael Steven Siegel , Fabrice Jean Verplanken
- 申请人: Brian Mitchell Bass , Jean Louis Calvignac , Marco C. Heddes , Michael Steven Siegel , Fabrice Jean Verplanken
- 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
- 代理商 Joscelyn G. Cockburn
- 主分类号: H04L12/28
- IPC分类号: H04L12/28 ; H04L12/56 ; H04L29/06
摘要:
A system and method of moving information units from a network processor toward a data transmission network in a prioritized sequence which accommodates several different levels of service. The present invention includes a method and system for scheduling the egress of processed information units (or frames) from a network processing unit according to stored priorities associated with the various sources of the information units. The priorities in the preferred embodiment include a low latency service, a minimum bandwidth, a weighted fair queueing and a system for preventing a user from continuing to exceed his service levels over an extended period. The present invention includes a weighted fair queueing system where the position of the next service in a best efforts system for using bandwidth which is not used by committed bandwidth is determined based on the length of the frame and the weight of the particular flow. A “back pressure” system keeps a flow from being selected if its output cannot accept an additional frame because the current level of that port queue exceeds a threshold.