Developed to allow host and module software implementers to use a common codebase across a variety of form factors, the SFP-DD MIS provides a set of core functions that all modules must implement and a set of optional features whose implementation is advertised in the module memory map. This approach allows host software implementers to read and react to optional module capability announcements while ensuring interoperability with all modules at a fundamental level.

SFP-DD MSA promoters include Alibaba, Broadcom, Cisco, Dell EMC, Finisar, HPE, Huawei, Intel, Juniper Networks, Lumentum, Mellanox, Molex and TE Connectivity. Collaborators include Accelink, Amphenol, AOI, Foxconn Interconnect Technology, Fourte, Genesis, Hisense, Infinera, Innolight, Maxim Integrated, Multilane, Nokia, Senko, Source Photonics, US Conec and ZTE.

A common feature of all SFP-DD MIS-compliant modules is that management data is transferred via a TWI, using a 256-byte addressable memory window, with mechanisms to dynamically page data from a much larger management memory space in the upper half of the host's addressable memory window. SFP-DD MIS-compliant pluggable modules are 2-lane module form factors.

"Working collectively with all MSA members, we are pleased to introduce the SFP-DD MIS," said Scott Sommers, MSA Founding Member and President. "With this new version, the MIS will enable the adoption of the SFP-DD form factor as the next generation of SFP-DD modules, connectors, and enclosure systems.".

Many MSA members will be showcasing SFP-DD at the upcoming European Conference on Optical Communication, September 23–25, in Dublin, Ireland. To download the SFP-DD management interface specification and diagrams, or to explore opportunities to become a contributing member, please visit the MSA website.