The Airwave webinar (for which a link was sent round last week) mentioned that some vendors are looking at providing two Ethernet sockets on MIMO / 802.11n Access Points, so they could draw 2 x 802.3af power connections and one live Ethernet connection.
_________________________________ Tomo | Senior Network & Telecommunications Infrastructure Engineer Direct line: +44 (0)20 7000 7777 | Email: [EMAIL PROTECTED] www.london.edu > -----Original Message----- > From: Frank Bulk - iNAME [mailto:[EMAIL PROTECTED] > Sent: 27 June 2007 02:32 > To: [email protected] > Subject: Re: [WIRELESS-LAN] The strategic importance of 5GHz > > 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/. > > ______________________________________________________________________ > > This email has been scanned by the MessageLabs Email Security System > on behalf of the London Business School community. > For more information please visit http://www.messagelabs.com/email > ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System on behalf of the London Business School community. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
