PMC's OTN Switching Complies with New OIF Protocol

PMC-Sierra's HyPHY family of OTN processors provide full architectural support of the Optical Internetworking Forum (OIF)’s new OTN-over-Packet-Fabric Protocol Implementation Agreement (IA).


The OIF IA defines a method for switching OTN streams, including the newly standardized ODU0 and ODUflex streams, over cell or packet switch fabric technology. This enables Packet Optical Transport Platforms (P-OTPs) to be based on a single fabric, which results in significantly simpler designs that consume less power and shelf space.


PMC said its HyPHY 20G and HyPHY 10G OTN processors provide a fully compliant implementation of the OIF IA via the Constant Bit Rate Interface (CBRI) and OTN Phase Signalling Algorithm (OPSA). CBRI, which is compliant with the Interlaken protocol, enables HyPHY to connect to a centralized packet/cell switch fabric and is capable of supporting hybrid packet/OTN switched line card designs (see Figure 1). OPSA provides for the segmentation, reassembly and frequency/phase encoding/decoding required to support OTN over a packet/cell fabric. The HyPHY 20G handles up to 40Gb/s of multi-service line-side traffic via 16-SFP, 2-XFP/SFP+, and 2-SFI-4.1 interfaces. In addition to P-OTP OTN switching line card applications, HyPHY also enables single-chip, low-power multi-service OTN muxponder and transponder line cards.
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