OSFP transceiver
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The OSFP transceiver MSA is a fiber optic pluggable module standard intended for 400Gbps fiber optic links between network equipment. It implements 8 x 50 Gbps electrical data lanes. It is a slightly larger version of the QSFP format currently used for 100 gigabit ethernet. The standard was announced on November 15th, 2016. [1]
This is a standard for OSI layer 1 interconnections and should not be confused with the similarly named OSPF routing protocol.