Methods and apparatus for randomly distributing traffic in a multi-path switch fabric
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.
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It should be understood that the random selection of a particular stage switch module will be performed for the set of stage switch modules that allow for delivery of a data cell to its destination, and will exclude remaining stage switch modules from which deliver of the data cell to its destination is not possible. For example, if a destination can be reached from certain third stage switch modules 216 but not other third stage switch modules 216, then the second stage switch module 214 performing random selection can randomly select from those certain third stage switch modules 216 but exclude the others.
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