Would you be able to elaborate on the improvements you did over the summer? We have a similar setup with regards to the backend, although ours is just freeradius -> ldap without the F5. Our usage levels are just a bit higher than yours but we're receiving lots of user reports of the inability to authenticate but nothing consistent enough to isolate and test repeatedly.
Thanks, Brandon -----Original Message----- From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:[email protected]] On Behalf Of Wang, Yu Sent: Wednesday, August 27, 2014 3:15 PM To: [email protected] Subject: Re: [WIRELESS-LAN] Authentication failures at peak times (Cisco) Where are all your user accounts hosted? What kind of user database that serves the wireless system? Do you have a rough number of how many concurrent users at peak time? We had peak time wireless authentication failure issues in the past Spring semester. We did performance tests in the summer and found out it was the backend (F5 + LDAP). We did improvements in the summer and we have not seen the issue in the first three days of Fall semester. Yesterday's wireless usage set a new record with over 32k unique users and over 15k concurrent users. We use Aruba wireless with 802.1X, WPA2-Ent, PEAP, MSCHAPv2 + freeradius + F5 + ldap. It's different than yours but from the error you mentioned, it's likely the backend was congested. Yu Wang ____________________________ Network Architect Information Technology Services The Florida State University 850-645-6810 [email protected] -----Original Message----- From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:[email protected]] On Behalf Of Eric T. Barnett Sent: Wednesday, August 27, 2014 2:12 PM To: [email protected] Subject: [WIRELESS-LAN] Authentication failures at peak times (Cisco) We've got a relatively small deployment compared to many on this list, but we've run into a problem we just can't put our finger on. We're using 5508s and ISE as a RADIUS server and we're having HUGE latencies on WPA2-Enterprise PEAP authentication. There's times when almost no one can authenticate. What's really weird is that the controllers show "AAA Authentication Error" when this happens even though the username and password is correct. None of the devices seem distressed and there's no network problems we can see. Anyone ever seen this before or have any ideas how to troubleshoot? TAC so far has been not incredibly useful but they have only been on the case for a day or so now. I can hear my users sharpening the pitchforks... Thanks, Eric Barnett Wireless Administrator Information and Technology Services Arkansas State University 870 680 4243 ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
