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Dear 802.3ba Task Force, I would like to follow up to Howard Frazier's proposal for the 5 Criteria modification in the event we adopt an objective to support 40 Gb/s on 10 km of single mode fiber. The presentations in support of adding the objective have focused on switch-to-switch connections for the application of aggregating server traffic. Therefore, a proposal for the economic feasibility paragraph in question is: Presentations indicate that for the server market and computing applications, including server traffic aggregation, 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. This proposal would remove uncertainty over cost-sensitivity for 40GbE and 100GbE. I would also propose the following change to the broad market potential: Servers, high performance computing clusters, blade servers, storage area networks and network attached storage all currently make use of 1G and 10G Ethernet, with significant growth of 10G projected in ’07 and ’08. I/O bandwidth projections for server and computing applications, including server traffic aggregation, indicate that there will be a significant market potential for a 40 Gb/s Ethernet interface. These proposals are in line with the original justification for 40 GbE - to support computing applications, but just extends the usefulness of 40GbE to switch-to-switch connections. Regards, Jesse Simsarian Alcatel-Lucent Howard Frazier wrote: 7C35CA5BF82C834B84DF18440EDD677A22CC57@NT-SJCA-0752.brcm.ad.broadcom.com" type="cite">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 -- Jesse Simsarian Bell Laboratories, Alcatel-Lucent 791 Holmdel Rd. HOH L-277 Holmdel, NJ 07733-0400 (732)888-7040 jesses@alcatel-lucent.com |