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How to Assistance Future Traffic Development: New 800G Optics MSA

Ray Nering
Ray Nering, Product Supervisor, Transceiver Modules Team, Cisco

Composed by Ray Nering

Traffic across IP systems continues to grow, and networks continue steadily to evolve to control new traffic needs and patterns. It has been the situation always, and the industry includes a long background of developing new criteria through various organizations, like the IEEE and ITU, and through multi-source contract (MSA) groups. These requirements enable component suppliers, products manufacturers, and providers to interconnect and hyperlink networks as seamlessly as you possibly can together. The most recent MSA, QSFP-DD800, the building blocks for 800G Ethernet pluggable optics lays.

Over the past couple of years, the has been centered on 400GE standards. For 400GE programs, there exists a host of brand new MSAs, and the IEEE is rolling out a fresh Media Access Control (Mac pc), along with electrical and optical interfaces. Last year, there have been many announcements from system equipment providers about their next-era switches and routers with expanded capability and 400GE port capacity. As these next-gen techniques begin deployment, market standards companies and MSA groupings are needs to look at the next thing in speeds ahead.

Last September, the forming of the QSFP-DD800 MSA group was introduced. Created by Broadcom, Cisco, Finisar, Intel, Juniper, Molex, Marvell, and Samtec, the objective had been to leverage the cornerstone of high-rate pluggable modules – the QSFP form aspect – for 800G apps. Back in January, I wrote a weblog about the MSA team and its own motivations and programs for the brand new specification. Year on March 3 of the, the QSFP-DD800 MSA team launched its Rev.1.0 specification. The brand new form element specification is really a follow to the QSFP-DD specification. It does increase the data price of every of the eight lanes to 100Gbps and defines the 8-channel module cage and connector program. This new specification supports around 800Gbps within aggregate and is backward appropriate for all the QSFP-based modules.

Since this specification is really a follow to the QSFP-DD MSA, any necessity not defined in the QSFP-DD800 form aspect specification should default to the newest update of the QSFP-DD requirements on the QSFP-DD MSA website. One function of the brand new QSFP-DD800 requirements can be an updated paddle cards modified to aid 100Gb/s lanes but still keep backward compatibility across all the QSFP modules. It offers for additional warmth sinking surfaces also. The 1×1 cage design gets the exact same mechanical outline because the QSFP-DD 1&instances;1 connector/cage. A fresh cage 2×1 cabled connector/cage style is specified, where in fact the lower slot uses SMT connections to the PCB, and the high-speed lanes for top of the interface are carried through the cable connection, as shown in the figure below.

QSFP-DD800 2x1 Cabled top connector/cage
QSFP-DD800 2&moments;1 Cabled higher connector/cage

The QSFP-DD800 MSA styles shall accommodate all the package types currently configured in the QSFP-DD MSA, including Type 1, Type 2, and Type 2A.

In my own next blog, I’ll share developments inside 800G signaling standards. For the time being, you will find all Cisco optics solutions on our site.

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