Ethernet fabric protection in a disaggregated OTN switching system
First Claim
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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Accused Products
Abstract
Methods and systems for Ethernet fabric protection in a disaggregated OTN switching system that include PIU modules each having multiple ports for OTN to Ethernet transceiving and an Ethernet fabric as a switching core are disclosed. An OTN over Ethernet module in each of the PIU modules may enable various OTN functionality to be realized using the Ethernet fabric which may include multiple Ethernet switches. A first PIU module may detect a fault condition on an Ethernet fabric plane of the Ethernet fabric. In response to the detection, the OTN switching system may transmit the fault condition to other PIU modules to redirect optical data unit traffic away from the fault on the Ethernet fabric plane.
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Citations
20 Claims
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An OTN switch comprising:
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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; a plurality of 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, and wherein 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, the first PIU module to detect a fault condition associated with the ith PIU port of the first PIU module on the ith Ethernet fabric plane; and the OTN switch to transmit the fault condition to stop transmission of ODU traffic from the plurality of PIU modules to the ith PIU port of the first PIU module. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification