公开(公告)号：DE60109027D1

公开(公告)日：2005-03-31

申请号：DE60109027

申请日：2001-03-30

Applicant: IBM

Inventor： GORTI KUMAR ,  HWANG DONGMING ,  JEFFERIES DEBS ,  SIEGEL STEVEN ,  SUDEEP KARTIK

IPC: H04L12/54 ,  H04L12/70 ,  H04Q11/04 ,  H04L12/56

Abstract: A method and system for controlling a plurality of sub-pipes in a computer network is disclosed. The computer network includes at least one switch. The plurality of sub-pipes utilizes the switch for transmitting traffic through the network. The method and system include allowing a minimum flow to be set for each of the plurality of sub-pipes and determining whether congestion exists for the pipe. The method and system also include controlling a flow in a sub-pipe of the plurality of sub-pipes only if congestion exists. Once congestion is determined to exist, the time set to control of sub-pipes is set significantly longer than for control over individual decreases or increases of the flows in sub-pipes. The flow is controlled such that the flow for the sub-pipe may be linearly increased if the flow for the sub-pipe of the plurality of sub-pipes is less than the minimum flow. The flow is also controlled such that the flow for the sub-pipe of the plurality of sub-pipes is exponentially decreased if the flow is greater than the minimum flow. In determining whether to increase or decrease the flow in a sub-pipe, a second definition of congestion may be used. Thus the traffic through the switch is stable.

公开(公告)号：DE60109027T2

公开(公告)日：2006-04-13

申请号：DE60109027

申请日：2001-03-30

Applicant: IBM

Inventor： GORTI KUMAR ,  HWANG DONGMING ,  JEFFERIES DEBS ,  SIEGEL STEVEN ,  SUDEEP KARTIK

IPC: H04L12/54 ,  H04L12/70 ,  H04Q11/04

Abstract: A method and system for controlling a plurality of sub-pipes in a computer network is disclosed. The computer network includes at least one switch. The plurality of sub-pipes utilizes the switch for transmitting traffic through the network. The method and system include allowing a minimum flow to be set for each of the plurality of sub-pipes and determining whether congestion exists for the pipe. The method and system also include controlling a flow in a sub-pipe of the plurality of sub-pipes only if congestion exists. Once congestion is determined to exist, the time set to control of sub-pipes is set significantly longer than for control over individual decreases or increases of the flows in sub-pipes. The flow is controlled such that the flow for the sub-pipe may be linearly increased if the flow for the sub-pipe of the plurality of sub-pipes is less than the minimum flow. The flow is also controlled such that the flow for the sub-pipe of the plurality of sub-pipes is exponentially decreased if the flow is greater than the minimum flow. In determining whether to increase or decrease the flow in a sub-pipe, a second definition of congestion may be used. Thus the traffic through the switch is stable.