System and method to identify and communicate congested...

Details System and method to identify and communicate congested... System and method to identify and communicate congested...

2011-06-07

2011-06-07

Rao, Seema S (Department: 2462)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C370S392000, C370S412000

Reexamination Certificate

active

07957293

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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