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For those of you who were not in the 802.3bj task force meeting this morning, I wanted to make clear that I sent the message below in response to questions at the microphone this morning regarding whether auto-negotiation of FEC is needed or wanted for optics. Jeff From: Jeffery Maki All, In the NG 100G Optical Ethernet Study Group this week, the presentation http://www.ieee802.org/3/100GNGOPTX/public/jan12/traverso_01_0112_NG100GOPTX.pdf was made by Gary Nicholl with the key statement: If new PMD(s) employ FEC, preference is that it is mandatory –Low Latency FEC is preferred –Proliferation of FEC types is burdensome Auto-negotiation is not sought. The presence or lack of presence of FEC is considered to be a separate PMD. See slide 11 on how to manage FEC over various PMDs. Title slide with author list: More thoughts on FEC Jan-2012 Matt Traverso, Cisco Gary Nicholl, Cisco Jeffery Maki, Juniper Slide with broad list of system-centric supporters: Supporters •Joel Goergen, Cisco •Ted Sprague, Infinera •Scott Kipp, Brocade •Dan Dove, Applied Micro •John D’Ambrosia, Dell •Kapil Shrikhande, Dell Jeffery Maki Juniper Networks, Inc. |