System and method to identify and communicate congested flows in a network fabric
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United States of America Patent
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Mar 2, 2010
Grant Date -
Dec 8, 2005
app pub date -
Jun 4, 2004
filing date -
Jun 4, 2004
priority date (Note) -
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Abstract
The invention provides a system and method for identifying and communicating congested paths throughout a network fabric. Briefly, the present invention augments the congestion management mechanism defined in ASI to allow for the communication of congested paths through the fabric, rather than the simple congested output port notification supported today through the use of DLLPs. Further, it also uses the communication mechanisms already defined in the ASI specification to implement this additional capability. Specifically, the present invention uses Transaction Layer Packets (TLPs) to communicate the information concerning congested flows throughout the network. This packet type allows the inclusion of much more information than DLLPs, allowing a more comprehensive and elegant solution to the issue of congestion management in an Advanced Switching network fabric.
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