From: Leigh Porter (no email)
Date: Wed Dec 12 2007 - 07:25:41 EST
Another nice feature would be cheap cheap optics with say 500M-1KM reach
for inter-floor connects.
-- Leigh Robert E. Seastrom wrote: > A practical question here: does anyone know offhand if 4km reach is > adequate for interbuilding access (i.e., DC[124] to DC3) access at > Equinix Ashburn, including worst-case interior wiring and cross > connects? I'm thinking that's cutting it close. The enterprise > people are substantially less likely to find themselves with a lot of > interconnections in a GCE (Ginormous Campus Environment) than we are, > and I suspect that skews the 90% number a bit. Folks who are more > familiar with the layout of other facilities may wish to chime in here. > > ---Rob > > Bora Akyol <> writes: > > >> IEEE is seeking feedback from network operators etc on the reach >> requirements for 40GE & 100GE. >> >> If you have direct feedback to give, please contact Chris Cole directly >> (email address below). >> >> This is very important as it will directly impact how much you pay for those >> soon to be cherished 40 & 100 GE hardware in the future. I believe >> information on how many patch panel connections you expect the links to go >> through is also highly valued. >> >> Regards >> >> Bora >> >> >> From: Chris Cole <> >> Subject: Re: [HSSG] Reach Ad Hoc >> To: <> >> Date: Tue, 11 Dec 2007 16:21:31 -0800 >> Reply-To: Chris Cole <> >> >> During the November HSSG meeting, optics vendors made a presentation >> proposing changing the 10km reach objective to 3km or 4km. One of my >> motivations for working on the proposal was informal input from a number >> of 100GE end users that >90% of their data center and short interconnect >> needs would be met by a reach objective less then 4km (versus 10km.) >> With such a reach distribution, a 4km or less optimized reach objective >> would result in overall cost savings. >> >> As part of the HSSG effort to review this proposal, numerous requests, >> both informal as well as from the HSSG chair and Reach Ad Hoc chair, >> have been made for contributions to quantify the 10km and under reach >> distribution. While the optics vendors as suppliers can accurately >> represent the relative costs of optics alternatives, they can not >> represent end user requirements. >> >> To date, we have seen no end user presentation or data supporting >> changing the 10km reach objective to 4km or less. Unless such >> contributions are forthcoming, it is likely that there will be no >> motivation to make the change. This sentiment can be seen in the 12/7 >> Reach Ad Hoc conference call minutes. >> >> I would encourage any HSSG participant that views their volume 100GE SMF >> needs as better met by a 4km or shorter reach objective to make a >> contribution containing reach distribution data in support of this >> position. Otherwise we will move forward with the existing approved >> objectives. >> >> Chris >> >> ________________________________________ >> >> From: Andy Moorwood [mailto:] >> Sent: Tuesday, December 11, 2007 6:03 AM >> To: >> Subject: [HSSG] Reach Ad Hoc >> >> Colleagues, the meeting notes from our call last week are now posted on >> the IEEE website >> http://www.ieee802.org/3/hssg/public/reach/MeetingNotes_r1_1207.pdf >> Thank you for your contributions >> Andy >> >> ---------- >>
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