Is your backend (controllers - Radius) all jumbo frame clean? We've
seen issues
with large EAP-TLS packets getting fragmented.
We also had a specific OS8 release bug affecting AP-515s specifically,
but it seems
like we're in perpetual bug-chasing mode so I can't recall what version
that was.
(Probably 8.5 something)
(edit: I just saw the 8.5.0.13 in the subject. You may have to move
away from that..)
On 9/1/21 11:27 AM, Turner, Ryan H wrote:
This is a stab in the dark. With the University mostly shutdown since
the Spring of 2020 (=not operating in standard mode and most people
work from home), we got campus upgraded from 6.X to 8.X code base.
We’ve also installed many 515 series APs. We are getting a large
number of complaints in large classrooms that connecting to things
like eduroam takes a long time. Looking into the connection, we see
many incomplete RADIUS challenges. The general complaints are ‘we
come into the classroom, and for some folks it can take up to 5
minutes to get connected’. The odd thing is that our RADIUS
infrastructure is very large, polished and load shared, and we can see
no performance issues with any of the RADIUS servers. We have begun
reducing power in the large classrooms to make association issues
better, but so far that hasn’t changed much. We anticipate opening a
ticket with Aruba, soon. We do seem to see the most complaints in the
big classrooms. But I do keep going back to the RADIUS Challenges
incomplete. I know if no reason for those not to complete unless the
connection is broken midway.
Has anyone else seen something like this?
Ryan Turner
Head of Networking
Communication Technologies | Information Technology Services
r...@unc.edu <mailto:r...@unc.edu>
+1 919 445 0113 (Office)
+1 919 274 7926 (Mobile)
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Mike Davis
IT - University of Delaware - 302.831.8756
Newark, DE 19716 Email da...@udel.edu
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