Disaggregated integrated synchronous optical network and optical transport network switching system
AssigneeFujitsu Limited
InventorsBiaodong Cai, Richard Dunsmore
Life of this patent
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Abstract
Methods and systems of a disaggregated integrated synchronous optical network (SONET) and optical transport network (OTN) switching system that includes using plug-in universal (PIU) modules for OTN to Ethernet transceiving, SONET PIU modules for Ethernet to SONET transceiving, and an Ethernet fabric as a switching core are disclosed. An OTN over Ethernet module in each of the PIU modules and an Ethernet over SONET module in each of the SONET PIU modules may enable various SONET and OTN functionality to be realized using the Ethernet fabric which may include multiple Ethernet switches.
Claims18
A synchronous optical network (SONET) and optical transport network (OTN) switching system comprising:
- an Ethernet fabric;
- a first plug-in universal (PIU) module connected to a first optical data unit (ODU) path of an optical transport network (OTN) and connected to the Ethernet fabric to:
- receive a first ODU from the OTN via the first ODU path;
- convert the first ODU to a first Ethernet packet;
- and
- transmit the first Ethernet packet to the Ethernet fabric;
- and
- a first SONET PIU module connected to the Ethernet fabric and connected to a first synchronous transport signal (STS) path of a STS switch fabric to:
- receive the first Ethernet packet via the Ethernet fabric from the first PIU module from the first ODU path;
- convert the first Ethernet packet to a first SONET circuit;
- perform a pointer adjustment process on the first SONET circuit to align the first SONET circuit with a STS clock domain of the STS switch fabric;
- and
- transmit the first SONET circuit to the STS switch fabric via the first STS path.
A method comprising:
- receiving at a first plug-in universal (PIU) module of a synchronous optical network (SONET) and optical transport network (OTN) switching system a first optical data unit (ODU) from an OTN via a first ODU path of the OTN;
- converting the first ODU to a first Ethernet packet;
- transmitting the first Ethernet packet from the first PIU module to an Ethernet fabric of the SONET and OTN switching system;
- receiving at a first SONET PIU module of the SONET and OTN switching system the first Ethernet packet via the Ethernet fabric from the first PIU module from the first ODU path;
- converting the first Ethernet packet to a first SONET circuit;
- performing a pointer adjustment process on the first SONET circuit to align the first SONET circuit with a STS clock domain of the STS switch fabric;
- and
- transmitting the first SONET circuit from the first SONET PIU module to a synchronous transport signal (STS) switch fabric via a first STS path of the STS switch fabric.
Dependencies are inferred from the claim text.