The IEEE gears up for the next Ethernet standard

Completing an Ethernet specification takes years of effort. Just ask John D’Ambrosia of Futurewei who has spent the last 15 years chairing various IEEE Ethernet standards.

John D'Ambrosia

He oversaw the standardisation of 40/100 Gigabit Ethernet (GbE) and 200/400GbE and he is now chairing two IEEE Task Forces standards addressing 100 and 400 coherent Ethernet.

He is also the Chair of the group looking at new Ethernet applications (NEA) or to give it its full title, the IEEE 802.3 Industry Connections NEA Ad Hoc group.

D’Ambrosia is driving the development of the ‘Beyond 400 Gigabit’ Call-for-Interest work of the NEA group that will define the next Ethernet standard.

Click to read more ...

PCI Express back on track with latest specifications

Richard Solomon and Scott Knowlton are waiting for me in the lobby of a well-known Tel-Aviv hotel overseeing the sunlit Mediterranean Sea.  

Richard SolomonSolomon, vice chair of the PCI Special Interest Group (PCI-SIG), and Knowlton, its marketing working group co-chair, are visiting Israel to deliver a training event addressing the PCI Express (PCIe) high-speed serial bus standard. 

With over 750 member companies, PCI-SIG conducts several training events around the world each year. The locations are chosen where there is a concentration of companies and engineers undertaking PCIe designs. “These are chip, board and systems architects,” says Solomon. 

PCI-SIG has hit its stride after a prolonged quiet period. The group completed the PCIe 4.0 standard in 2017, seven years after it launched PCIe 3.0. The PCIe 4.0 doubles the serial bus speed and with the advent of PCIe 5.0, it will double again.

Click to read more ...

Stitching together disaggregated chips

The Optical Internetworking Forum (OIF) has begun work on a 112-gigabit electrical interface to connect chips in a multi-chip module.

The ultra-short-reach electrical interface for multi-chip modules adds to the OIF's ongoing CEI-112G project, started in August 2016, to develop a 112 gigabit-per-second (Gbps) serial electrical interface for next-generation optical modules. 

Source: Gazettabyte, OIF data. The year 2018 is an estimate.

Click to read more ...

FSAN unveils roadmap plans

Part 2: Next-generation passive optical networks

The Full Service Access Network (FSAN) has outlined its vision for fibre access networks for the coming decade. 

FSAN is an industry forum that includes over 20 operators and 70 members overall. The group identifies service requirements and develops optical access technologies that are passed to the International Telecommunication Union (ITU) for standardisation.

Source: FSAN

“One of the messages of the roadmap is that, in the immediate future, what FSAN wants to do is evolve the existing standards,” says Peter Dawes, FSAN NGPON co-chair. 

Click to read more ...

Choosing paths to future Gigabit Ethernet speeds

Industry discussions are being planned in the coming months to determine how Ethernet standards can be accelerated to better serve industry needs, including how existing work can be used to speed up the creation of new Ethernet speeds.

The y-axis shows the number of lanes while the x-axis is the speed per lane. Each red dot shows the Ethernet rate at which the signalling (optical or electrical) was introduced. One challenge that John D'Ambrosia highlights is handling overlapping speeds. "What do we do about 100 Gig based on 4x25, 2x50 and 1x100 and ensure interoperability, and do that for every multiple where you have a crossover?" Source: Dell

One catalyst for these discussions has been the progress made in the emerging 400 Gigabit Ethernet (GbE) standard which is now at the first specification draft stage.

“If you look at what is happening at 400 Gig, the decisions that were made there do have potential repercussions for new speeds as well as new signalling rates and technologies,” says John D’Ambrosia, chairman of the Ethernet Alliance.

Click to read more ...