On Fri, Feb 28, 2014 at 04:31:54PM +0100, Benny Amorsen wrote: > Mikael Abrahamsson <swm...@swm.pp.se> writes: > > > When 40GE and 100GE was standardized it was taken for granted that > > 40GE would be used to connect servers and perhaps a little > > inter-building backhaul, because of that only up to 10km was > > standardized. > > Just in case any vendors read this list: > > There is a market for 40km 40G optics! Even non-standard.
The IEEE has a task force that is defining the specs for long distance 40 Gb/s, "40GBASE-ER4" http://grouper.ieee.org/groups/802/3/bm/index.html ---------- 5.2.b. Scope of the project: This project is to specify additions to and appropriate modifications of IEEE Std 802.3 to add 100 Gb/s Physical Layer (PHY) specifications and management parameters, using a four-lane electrical interface for operation on multimode and single-mode fiber optic cables, and to specify optional Energy Efficient Ethernet (EEE) for 40 Gb/s and 100Gb/s operation over fiber optic cables. In addition, to add 40 Gb/s Physical Layer (PHY) specifications and management parameters for operation on extended reach (> 10 km) single-mode fiber optic cables. ---------- Looks like Finisar has a transceiver under development: http://www.lightwaveonline.com/articles/2013/09/finisar-shows-off-cfp4-optical-transceiver-at-ecoc.html -Charles Charles E. Spurgeon University of Texas at Austin / ITS Networking c.spurg...@its.utexas.edu / 512.475.9265 _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/