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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

The first switch-fabric plane 704 contains a three-stage switch fabric, similar to the three-stage switch fabric 200 described above with respect to FIG. 2. Specifically, the first switch-fabric plane 704 includes switch modules 713 of a second stage of the switch fabric 700, switch modules 714 of a third stage of the switch fabric 700, and switch modules 715 of a fourth stage of the switch fabric 700. Said another way, switch modules 713, switch modules 714 and switch modules 715 collectively define a portion of a five-stage switch fabric that is located on the first switch-fabric plane 704. Switch modules 712 of a first stage and switch modules 716 of a fifth stage of the switch fabric 700 are not included on the first switch-fabric plane 704. Switch modules 712, switch modules 713, switch modules 714, switch modules 715 and switch module 716 collectively define the five-stage switch fabric 700.

權(quán)利要求

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