Dale: I've heard from at least one vendor that a b/g radio with and 802.11n radio may operate within 802.3af power limits. But I've heard nothing absolutely definite so far and I anticipate that we'll know more by the end of the summer as these products move from short-run samples to production.
The whole 802.11n PoE and GigE port thing really puts most organizations into a pickle...they can cheat with using 100BaseT at the edge but if you really want to do full 802.11n on two radios it's going to necessitate a midspan, PoE injectors, or a new switch (and that will be at least a year away). If vendors can make an AP with an 802.11b/g radio and an 802.11n radio operate within 802.3af power limits that should give organizations the breathing room they need to upgrade their edge switching infrastructure over the next 3-5 years. Frank -----Original Message----- From: Dale W. Carder [mailto:[EMAIL PROTECTED] Sent: Tuesday, June 26, 2007 3:55 PM To: [email protected] Subject: Re: [WIRELESS-LAN] The strategic importance of 5GHz On Jun 25, 2007, at 11:57 AM, Enfield, Chuck wrote: > We currently only have one UTP cable to an AP location. > > The alternative is one GigE drop with either local power or > proprietary UTP > based power (including possible pre-standard 802.3at). One thing we did for the last 3 years is to pull siamese cable to each AP location, setting up the infrastructure in advance for a technology change. What will probably screw us as you mention is not enough PoE via 802.3af. Having an AP with bg on 2.4 and MIMO on 5 will probably require 802.3at. So in addition to replacing your AP's, you are now also forklifting your PoE switches... Dale ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
