Since we can't do 3af power with GigE, that one connection would
have to be
100Mb. If we're going to use two cables for power let's hope we'll
be given
the chance to use two data channels as well.
Chuck
-----Original Message-----
From: Tomo [mailto:[EMAIL PROTECTED]
Sent: Wednesday, June 27, 2007 4:14 AM
To: [email protected]
Subject: Re: [WIRELESS-LAN] The strategic importance of 5GHz
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
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