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Methods and apparatus for randomly distributing traffic in a multi-path switch fabric

專利號(hào)
US10097479B1
公開日期
2018-10-09
申請(qǐng)人
Juniper Networks, Inc.(US CA Sunnyvale)
發(fā)明人
Philip A. Thomas; Sarin Thomas; Jean-Marc Frailong; Pradeep Sindhu
IPC分類
H04L12/947; H04L12/707; H04L12/935
技術(shù)領(lǐng)域
egress,switch,indicator,module,schedule,status,fabric,stage,data,port
地域: CA CA Sunnyvale

摘要

In some embodiments, an apparatus comprises a schedule module within a switch fabric system. At a first time, the schedule module is configured to access a list of status indicators associated with a group of egress port indicators. The list of status indicators includes a set of status indicators each of which has a value greater than a threshold. The schedule module is configured to randomly select a status indicator from the set of status indicators and configured to reduce the value of the selected status indicator. The schedule module is then configured to send the egress port indicator associated with the selected status indicator such that a data cell is sent from an egress port associated with that egress port indicator. At a second time, when the value of every status indicator from the list of status indicators is not greater than the threshold, the schedule module is configured to increase the value of every status indicator above the threshold.

說明書

FIG. 9 is a flow chart that illustrates a method for selecting an egress port from a list of egress ports to send a data cell, according to an embodiment. At 910, a list of status indicators associated with egress port indicators and a destination indicator can be accessed, where the list of status indicators includes a set of status indicators having a first value. Specifically, after a data cell is received at a switch module, a schedule module operatively coupled to the switch module can be configured to access a status indicator list. Each status indicator from the status indicator list is associated with an egress port indicator, which uniquely identifies an egress port of the switch module. The status indictor list is associated with a destination indicator, which can be determined from a destination identifier retrieved from the data cell. Furthermore, each status indicator from the status indicator list has a value, which is used to indicate the availability of the egress port associated with the status indicator for sending a data cell. Particularly, a set of status indicators from the status indicator list have a first value, which indicates the egress ports associated with this set of status indicators are available for sending a data cell.

權(quán)利要求

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