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Here is my report from the most recent IEEE 802.3 standards meeting, which was held in Dallas during the week of November 9.
The big news is that work on 50G Ethernet is now about to start. The 25G 802.3by project will soon be ending and plans are afoot for the team working on 802.3by to start thinking about 50G Ethernet.
The 802.3bs 400G project has adopted technology for 50G per lane operation. So it follows that 50G single-lane Ethernet PHYs should be created using this technology.
The first stage in creating an 802.3 standard is a call for interest (CFI) at an IEEE 802 plenary meeting. This was done at the recent meeting in Dallas with substantial interest being shown. When the consensus building presentation was made on the Tuesday night, over 100 people indicated that they would work on a 50G project.
As a result, two study groups have been approved to develop suitable objectives for 50G per lane Ethernet:
The first study group is expected to lead to a new project (task force) to develop 50G single-lane PHYs, while the second is likely to amend the 802.3bs 400G project’s objectives to include 100G and 200G PHYs based on 50G per lane technology. It makes sense to do this work in the 802.3bs task force because that project is already focused on developing PCS and PMA solutions for multi-lane PHYs. Also, adding 100G and 200G PHYs to 802.3bs will make it more relevant as the initial 400G market is expected to be small.
The single-lane 50Gbps consensus building presentation can be found here.
Once a study group completes its work, a task force is formed to write the standard. The draft standard goes through three cycles of review:
In addition I should report that progress is being made in automotive Ethernet, where there are five relevant projects: