Any chance you could be experiencing the issues outlined in today's advisory?
https://mail.google.com/mail/u/0?ui=2&ik=b16ec71188&attid=0.1&permmsgid=msg-f:1709803220174325554&th=17ba70f8464f4732&view=att&disp=inline On Thu, Sep 2, 2021 at 10:20 AM Enfield, Chuck <[email protected]> wrote: > Between 5k and 6k clients on a 7240xm is where we started seeing problems. > Lighter loaded controllers were OK. > ------------------------------ > *From:* "Street, Chad A" <[email protected]> > *Sent:* Thursday, September 2, 2021 11:03 AM > *To:* [email protected] > *Subject:* Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else > seeing any issues in the fall with large classrooms and delayed connection > times (Aruba 8.5.0.13) > > We are a balanced cluster, notes about load below: > > > "I’m also noticing that there are much fewer clients on this controller, > and that ratio doesn’t seem to be improving." > > To this point, the action we took that seemed to help the most was > adjusting our active client load balancing threshold. We dropped it > significantly to force clients to balance across controllers. Once we got > below ~5000 active clients per controller, we stopped seeing the mass > client connection issues. > > We still have a controller that hasn't taken significant load, but now > that we've been running without major issues for the past few days, we're > reluctant to touch the setting again. > ------------------------------ > *From:* The EDUCAUSE Wireless Issues Community Group Listserv < > [email protected]> on behalf of Rob Harris < > [email protected]> > *Sent:* Thursday, September 2, 2021 10:59 AM > *To:* [email protected] < > [email protected]> > *Subject:* Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else > seeing any issues in the fall with large classrooms and delayed connection > times (Aruba 8.5.0.13) > > > For those of you who have experienced this, what was your user load and > how were your clusters operating (balancing, active/standby) ? > > > > I wonder if there’s a threshold.. > > > > Thx! > > > > *From:* The EDUCAUSE Wireless Issues Community Group Listserv < > [email protected]> *On Behalf Of *Smith, Nayef > *Sent:* Thursday, September 2, 2021 10:20 AM > *To:* [email protected] > *Subject:* Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else > seeing any issues in the fall with large classrooms and delayed connection > times (Aruba 8.5.0.13) > > > > > > > > "I’m also noticing that there are much fewer clients on this controller, > and that ratio doesn’t seem to be improving." > > > > To this point, the action we took that seemed to help the most was > adjusting our active client load balancing threshold. We dropped it > significantly to force clients to balance across controllers. Once we got > below ~5000 active clients per controller, we stopped seeing the mass > client connection issues. > > > > We still have a controller that hasn't taken significant load, but now > that we've been running without major issues for the past few days, we're > reluctant to touch the setting again. > > > > > > Nayef Z. Smith | *Network Services* | Voice: 404-727-6019 > > > > > > ------------------------------ > > *From:* The EDUCAUSE Wireless Issues Community Group Listserv < > [email protected]> on behalf of Davis, Jonathan Alan < > [email protected]> > *Sent:* Thursday, September 2, 2021 9:27 AM > *To:* [email protected] < > [email protected]> > *Subject:* Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else > seeing any issues in the fall with large classrooms and delayed connection > times (Aruba 8.5.0.13) > > > > Lee, don’t you bring your bad Cisco-juju to this conversation! :-) > > > > Now that Lee has been properly handled, this is probably a great > opportunity to say ‘hello’ to the greater list. > > > > Hello! > > > > Last night, we (UNC) restarted the controller used to test the firewall > policy. Despite Aruba’s advisory, we’ve been led to believe that restarting > STM may not be enough, and restarting the whole controller may be required > to resolve high STM CPU utilization. > > > > This morning we are keeping a close eye on that controller. While STM is > surging well past 100%, it seems to be averaging much closer to 95%. > > > > However… > > We also only have about 7,000 users connected across the cluster. It will > be interesting to see what happens as the day progresses and students wake > up and migrate from the ResNET cluster to the Campus cluster. > > I’m also noticing that there are much fewer clients on this controller, > and that ratio doesn’t seem to be improving. > > > > I’ll update as we progress through this. > > > > JD > > -- > > Jonathan Davis > > Wireless Architect > > The University of North Carolina at Chapel Hill > > [email protected] > > +1 336 279 3355 (Mobile) > ------------------------------ > > *From:* The EDUCAUSE Wireless Issues Community Group Listserv < > [email protected]> on behalf of Lee H Badman < > [email protected]> > *Sent:* Thursday, September 2, 2021 9:06:33 AM > *To:* [email protected] < > [email protected]> > *Subject:* Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else > seeing any issues in the fall with large classrooms and delayed connection > times (Aruba 8.5.0.13) > > > > But you tested in your lab, right? I love that one… put new code on a > couple of APs, or even a few dozen. That’s supposed to somehow indicate > what will happen at bigger load… and also maybe implies the vendor didn’t > do their own “similar lab testing”… > > “You should have tested before upgrading the whole environment…” how do > you REALLY do that? And should you really have to? Just pondering the > general state of things. > > > On Sep 2, 2021, at 08:59, Enfield, Chuck <[email protected]> wrote: > > > > That's been my experience for years. The network works great when > there are no students around. My working theory is that students emit RF > interference, but research ethics won’t let me run the tests, so we'll > never know for sure. > > > > -----Original Message----- > > From: The EDUCAUSE Wireless Issues Community Group Listserv < > [email protected]> On Behalf Of Patrick McEvilly > > Sent: Thursday, September 2, 2021 8:56 AM > > To: [email protected] > > Subject: Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else > seeing any issues in the fall with large classrooms and delayed connection > times (Aruba 8.5.0.13) > > > > Speaking from experience, I would be very concerned. We had no issues > until students returned and we went downhill from there. > > > > > > On 9/2/21, 8:50 AM, "The EDUCAUSE Wireless Issues Community Group > Listserv on behalf of Rob Harris" <[email protected] on > behalf of [email protected]> wrote: > > > > Has anyone seen any details regarding what they consider "Large" > environments? We upgraded during the break, but both before and after > versions are affected. We didn't notice this happening before, should we be > concerned now? > > > > The "dropped" is 0 and the stm cpu usage is in single digits, but > client count is really low (they come back this weekend as well), could we > be in the clear? > > > > (asked the SE team and opened a tac call, same questions to them) > > > > thx > > > > -----Original Message----- > > From: The EDUCAUSE Wireless Issues Community Group Listserv < > [email protected]> On Behalf Of Jason Healy > > Sent: Thursday, September 2, 2021 8:45 AM > > To: [email protected] > > Subject: Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else > seeing any issues in the fall with large classrooms and delayed connection > times (Aruba 8.5.0.13) > > > > CAUTION: This email originated from outside The Culinary Institute of > America. Do not click links or open attachments unless you recognize the > sender and know the content is safe. > > > > FWIW, Aruba just posted an advisory regarding this issue: > > > > Aruba Support Advisory ARUBA-SA-20210901-PLVL04, "Wi-Fi Client > Connectivity Failures in Large Client Environments" > > > > Good luck to those of you hit by this. My students start coming back > this weekend so I'll be watching this closely! > > > > Jason > > ********** > > Replies to EDUCAUSE Community Group emails are sent to the entire > community list. 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