Tim,  you are correct that for SSIDs with a foreign and anchor controller,
all authentication is performed through the anchor.  So, does the AAA piece
need to be configured on the foreign controller?  No.   So, why configure
AAA on the foreign WLC?  In this case, it was already in there from a
previous requirement.  It doesn't hurt (in this case) to add it.  And, there
are several things which must be configured the same on both the anchor and
the foreign WLCs (but not everything.)  Would you be marked for having it or
not having it?  No.

 

Sorry for any confusion that that caused.

 

Jason Boyers - CCIE #26024 (Wireless)
Technical Instructor - IPexpert
 <mailto:[email protected]> [email protected]



 

From: [email protected]
[mailto:[email protected]] On Behalf Of
Silverline,Tim
Sent: Sunday, February 20, 2011 5:20 PM
To: [email protected]
Subject: [CCIE Wireless] Question on Lab 5.5

 

In Lab 5.5 part 2 - it asks to configure a Guest2 SSID using RADIUS auth
against AD.

 

In the solution guide it goes through the steps of configuring the RADIUS
server details on both the local controller AND the anchor controller.

 

Through some testing today it seems that the configuration on the local
controller is not necessary.

 

I was trying to do Local EAP-FAST authentication today and it occurred to me
how silly it would be if you had to configure the users on every single
controller in order for it to work properly so I just deleted the config
from the local and left only on anchor and it still continued to
authenticate successfully.

 

Since all of the authentication is apparently handled by the anchor
controller - and not at all by the local controller - what is the benefit of
configuring it on the local controller as well?

 

Am I missing something here?

 

Thanks in advance for your feedback.

Tim Silverline, CCIE #18490, CISSP

World Wide Technology, Inc. 
Consulting Systems Engineer 

 

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