2.  Since thin APs should be cheaper than fat ones, the exact ratio is going to depend on the number of APs deployed, declining toward 1.0 as the network gets large enough.  I'll assume you're referring only to capital purchase cost here; we expect to achieve savings in management/maintenance load on staff as well.
 
3. 
  d.  Stolen thin APs are paperweights.  Stolen fat APs may yield passwords and/or encryption keys, etc.
 
  We've deployed ~10 hotspots using fat APs, and are about to start rolling out a CBA solution across swaths of campus.
 
David Gillett
 


From: Zeller, Tom S [mailto:[EMAIL PROTECTED]
Sent: Friday, June 23, 2006 6:43 AM
To: [email protected]
Subject: [WIRELESS-LAN] Controller Architecture vs FAT APs

I would be interested in other opinions on the following analysis of this issue:

 

 

  1. Using AirWave’s AMP management platform has almost eliminated the management advantage of the controller-based architecture (CBA).  AMP monitors, reports, and updates Fat APs just fine.  Also, some CBAs don’t yet have a single management platform for multiple controllers.
  2. CBA is considerably more expensive, in the 1.5 – 2.0 x range compared to Fat APs
  3. The other advantages of CBA boil down to the following.  If others I’d like to hear.  And if these are fictitious, also of interest:
    1. Roaming, theoretically across an entire campus, without requiring a single vlan
    2. Significantly faster handoff between APs due to 802.1x keys on the controller, important for voice support.
    3. Automagic dense AP deployment from radio feedback to and adjustments from controller (or Meru’s approach).

 

Obviously I’m considering sticking with Fat APs for another few years and allowing the CBA products to mature, but  I ain’t got no religion here, and would welcome success/horror stories from large scale CBA deployments.

 

Tom Zeller

Indiana University

[EMAIL PROTECTED]

812-855-6214

 

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