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Ethernet fabric protection in a disaggregated OTN switching system

  • US 10,178,453 B2
  • Filed: 01/30/2017
  • Issued: 01/08/2019
  • Est. Priority Date: 04/21/2016
  • Status: Active Grant
First Claim
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1. A method for Ethernet fabric protection,in an optical transport network (OTN) switch comprising:

  • an Ethernet fabric having a number M of Ethernet fabric planes, each of the M Ethernet fabric planes includes a corresponding Ethernet switch of M Ethernet switches; and

    a plurality of plug-in universal (PIU) modules each having M PIU ports including a first PIU module, wherein an ith PIU port of each of the plurality of PIU modules is connected to the ith Ethernet switch of the ith Ethernet fabric plane of the Ethernet fabric, the method comprising;

    assigning a variable i having a value ranging from 1 to M to denote the ith Ethernet fabric plane of the M Ethernet fabric planes, the ith Ethernet switch of the M Ethernet switches, and the ith PIU port of the M PIU ports, wherein M is greater than one;

    detecting, by the first PIU module, a fault condition associated with the ith PIU port of the first PIU module on the ith Ethernet fabric plane; and

    transmitting the fault condition to stop transmission of optical data unit (ODU) traffic from the plurality of PIU modules to the ith PIU port of the first PIU module.

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