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

專利號
US10097479B1
公開日期
2018-10-09
申請人
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

In the embodiment shown in FIG. 5, instead of data cells associated with each unique destination indicator being provided with a unique status indicator list or credit value list from schedule table 500, data cells associated with multiple destination indicators can be provided with the same status indicator list or credit value list. As a result, an egress port is selected for sending a data cell associated with any of the multiple destination indicators, based on the same status indicator list or credit value list provided from schedule table 500. For example, as shown in FIG. 5, an egress port is selected for sending a data cell associated with destination indicator 1, destination indicator 2, or destination indicator 3, based on status indicator list 521 having the value of “0|1|1| . . . |0” or a credit value list (not shown in FIG. 5) that is stored in the first entry of schedule table 500.

權(quán)利要求

1
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