I can confirm your goal is achievable just don't know about your particular 
implementation; for us, the RADIUS server is programmed to send a different 
value for the RADIUS attribute "Filter-Id" based on the successful 
authentication from various proxies.   With this information provided to the 
controller, the vLAN is set to a particular value.   This is the working bit of 
configuration in the aaa server-group on the controller...

 set vlan condition Filter-Id contains "eduroam-noncornell" set-value 1900
 set vlan condition Filter-Id contains "eduroam-cornell" set-value 1901

...that matches client to the vLAN with security premises expected for those 
clients.   

We utilize Aruba Networks for the Wi-Fi system and OSC Radiator for the RADIUS 
server.   We have clients utilizing eduroam here from Cornell as well as other 
participating institutions and the reciprocal is working out as well.    Hope 
this was helpful...


Dave Barr


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Cornell Information Technologies       http://www.cit.cornell.edu

David Barr - Information Technology Specialist  
Email: d...@cornell.edu
Phone:  607 255-4703

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-----Original Message-----
From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Jethro R Binks
Sent: Thursday, July 07, 2011 11:48 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] Proxim APs and 802.1X RADIUS VLAN assignment

Hello all,

I've been having problems using 802.1X authentication, or more 
specifically, assignment of VLANs based on the RADIUS attributes.

Goal is to have one SSID, "eduroam", to which both visitors and local 
users authenticate when using the wireless service.  Visitors remain in 
the VLAN to which the SSID is associated, and local users onsite are 
switched into a different VLAN based on attributes from the Radius server 
backend.

In brief:

I am running the latest v4.0.12 code (but had problems with previous 
versions too).

I believe I have followed to the letter the Proxim knowledgebase article 
(which was updated a while ago ("VLAN Assignment by RADIUS").

I have tested with a variety of clients (Windows laptop, Windows mobile, 
Apple i-things).

With no VLAN assignment (i.e., none of the Tunnel- attributes being sent 
by RADIUS), it usually works OK (sometimes with a couple of retries); but 
the local user remains in the "visitor" VLAN as expected.

With the VLAN assignment enabled, it will usually NOT work.  Once in a 
while you might get lucky and get connected to the right VLAN and get an 
address from DHCP, but it is very inconsistent and unreliable.  As far as 
I can surmise, the problem is likeliest to lie with the AP.

Since it does occasionally work, the basic infrastructure appears to be 
sound.

So, I'm reaching out there to find if there are any other people doing 
something this with Proxim APs (AP4000 in particular), to see if you have 
seen these problems with other vendor or found a fix.  Or, alternatively, 
maybe it isn't the AP, but something else you can suggest that might cause 
this inconsistent behaviour.

Thanks for any thoughts,

Jethro.

.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .
Jethro R Binks, Network Manager,
Information Services Directorate, University Of Strathclyde, Glasgow, UK

The University of Strathclyde is a charitable body, registered in
Scotland, number SC015263.

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