Re: [802.3BA] 5 Criteria mod to support 40 G on SMF
Before we dive into the power budget and spreadsheet, we should probably
investigate the best balance of reach and cost for 40Gb/s SMF for server
market and computing applications.
Economically, it probably doesn't make sense to do 40Gb/s SMF at 10km for
server and computing. 1km~2km should be more than sufficient.
Hong Liu
Google Inc.
-----Original Message-----
From: Howard Frazier [mailto:hfrazier@BROADCOM.COM]
Sent: Thursday, February 07, 2008 3:21 PM
To: STDS-802-3-HSSG@LISTSERV.IEEE.ORG
Subject: [802.3BA] 5 Criteria mod to support 40 G on SMF
Dear members of the IEEE 802.3ba Task Force,
I have reviewed our approved set of 5 Criteria responses
http://www.ieee802.org/3/ba/PAR/HSSG_5C_0707.pdf
looking for any material that will need to be changed in the event we adopt
an objective to support 40 Gb/s operation on 10 km of single mode fiber. In
my opinion, the responses will remain valid and complete, with one
exception.
On page 6 of the above referenced file, in our response to the Economic
Feasibility criterion, we state:
Presentations indicate that for the server market and
computing applications the optimized rate to provide
the best balance of performance and cost is 40 Gb/s.
For the network aggregation market and core networking
applications, the optimized rate offering the best
balance of performance and cost is 100 Gb/s.
If we adopt a 40 Gb/s SMF objective, then this response should be modified
along the lines of:
Presentations indicate that for the server market,
computing applications and some cost-sensitive
aggregation applications, the optimized rate to provide
the best balance of performance and cost is 40 Gb/s.
For the network aggregation market and core networking
applications, the optimized rate offering the best
balance of performance and cost is 100 Gb/s.
The change being the insertion of the words "some cost-sensitive aggregation
applications" in the first sentence.
I think that our previously approved responses for Broad Market Potential,
Compatibility, Distinct Identity, and Technical Feasibility will not require
any change in the event that we adopt an objective for 40 Gb/s operation on
SMF. I think that the proponents of the new objective will be able to
readily demonstrate this.
If you think I have over looked something else that might need to be
changed, please speak up, and please provide a proposed change.
Howard Frazier
Broadcom Corporation