Curious if the high mem utilization correlates to client count? (Both assoc and unassoc)
On Wed, Jun 2, 2021 at 11:38 AM Jonathan Oakden <j.p.oak...@lboro.ac.uk> wrote: > Not sure as yet as we have been too busy to get this over to TAC at the > moment since we identified the problem and came across this bug ID at the > end of last week. It’s certainly the closest match we can find. > > We can see that most of our 2801 APs sit at around 30-50% memory > utilisation, however around 6% of them (about 320) are currently above 60% > which is unusual. These appear to be climbing steadily at around 3-4% per > week as though there is a memory leak. > > We first spotted this when we got reports from students in a residence > saying they were connected to wifi but nothing was working. Looking at the > AP it was sat at 95% memory utilisation. Rebooting the AP restored service. > However, we then looked at nearby APs and could see them climbing as well. > It doesn’t appear to be all our APs but some unknown subsection of them. > > We only went to 8.10 as we had bought some 9105 APs. > > > > *From: *The EDUCAUSE Wireless Issues Community Group Listserv < > WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> on behalf of Lee H Badman < > 000000db5b77bd95-dmarc-requ...@listserv.educause.edu> > *Date: *Wednesday, 2 June 2021 at 16:30 > *To: *WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU < > WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> > *Subject: *Re: [WIRELESS-LAN] [EXTERNAL] [WIRELESS-LAN] Cisco 8540 Code > Recommendation, Based on Stability? > > That one’s interesting because it shows affected code is 8.5(140.0), and > only one case... is TAC agreeing it’s the same bug? Just curious. > > Lee Badman (mobile) > > > > On Jun 2, 2021, at 11:23 AM, Jonathan Oakden <j.p.oak...@lboro.ac.uk> > wrote: > > > > We are on 8.10.151 for the last couple of months here at Loughborough > University in England. We think we are being hit quite badly by this bug: > > https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvp31778 > > with around 6% of our 2802i APs being currently affected. > > It’s a really annoying bug too as to the user they appear to be connected > to Wi-Fi but they have no network activity at all. Also the APs seem fine > from a monitoring perspective unless you are either carefully monitoring > their memory usage, or they get so far out of memory that they appear to > lose their registration with the controller. > > As such, I really can’t recommend 8.10.151. > > > > *From: *The EDUCAUSE Wireless Issues Community Group Listserv < > WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> on behalf of Lee H Badman < > 000000db5b77bd95-dmarc-requ...@listserv.educause.edu> > *Date: *Wednesday, 2 June 2021 at 16:06 > *To: *WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU < > WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> > *Subject: *Re: [WIRELESS-LAN] [EXTERNAL] [WIRELESS-LAN] Cisco 8540 Code > Recommendation, Based on Stability? > > Thanks, Jason and Dennis. > > > > *Lee Badman* | Network Architect (CWNE#200) > > Information Technology Services > (NDD Group) > 206 Machinery Hall > 120 Smith Drive > <https://www.google.com/maps/search/120+Smith+Drive+%0D%0ASyracuse,+New+York+13244?entry=gmail&source=g> > Syracuse, New York 13244 > <https://www.google.com/maps/search/120+Smith+Drive+%0D%0ASyracuse,+New+York+13244?entry=gmail&source=g> > > *t* 315.443.3003 * e* lhbad...@syr.edu *w* its.syr.edu > > Campus Wireless Policy: > https://answers.syr.edu/display/network/Wireless+Network+and+Systems > > *SYRACUSE UNIVERSITY* > syr.edu > > > > *From:* The EDUCAUSE Wireless Issues Community Group Listserv < > WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> *On Behalf Of *Jason Mallon > *Sent:* Wednesday, June 2, 2021 10:58 AM > *To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > *Subject:* Re: [WIRELESS-LAN] [EXTERNAL] [WIRELESS-LAN] Cisco 8540 Code > Recommendation, Based on Stability? > > > > We are currently running 8.10.151 and have been for quite a few months > with no issues as of yet. Only two issues as of right now are a certain > devices not being able to connect, working with TAC on those. 8.10.130 and > 8.10.142 are covered in bugs. > > > > Thanks, > > *Jason Mallon* | Network Engineer III > > <image001.png> > > > > OIT > The University of Alabama > <https://www.ua.edu/>jemal...@ua.edu > > <image001.png> > > > > > > *From: *The EDUCAUSE Wireless Issues Community Group Listserv < > WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> on behalf of Lee H Badman < > 000000db5b77bd95-dmarc-requ...@listserv.educause.edu> > *Date: *Wednesday, June 2, 2021 at 9:40 AM > *To: *WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU < > WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> > *Subject: *[EXTERNAL] [WIRELESS-LAN] Cisco 8540 Code Recommendation, > Based on Stability? > > Hi all, > > > > After a tumultuous series of code versions, awhile back we settled on > 8.5.151.0 and hung on to it like grim death because it was very, very > reliable. > > > > Given that 8.5 code goes end-of-support at end of 2021, combined with > latest rounds of announced vulnerabilities, I’m looking for recommendations > in the 8.10 train based on wanting stability above all. We have 3800s and > 3700s currently, likely to stay that way through the next academic year. > > > > Has anyone found an 8.10. code version for the 8540 that supports the 3700 > and 3800 while providing good daily stability? > > > > Thanks, > > > > > > *Lee Badman* | Network Architect (CWNE#200) > > Information Technology Services > (NDD Group) > 206 Machinery Hall > 120 Smith Drive > <https://www.google.com/maps/search/120+Smith+Drive+%0D%0ASyracuse,+New+York+13244?entry=gmail&source=g> > Syracuse, New York 13244 > <https://www.google.com/maps/search/120+Smith+Drive+%0D%0ASyracuse,+New+York+13244?entry=gmail&source=g> > > *t* 315.443.3003 * e* lhbad...@syr.edu *w* its.syr.edu > > Campus Wireless Policy: > https://answers.syr.edu/display/network/Wireless+Network+and+Systems > <https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fanswers.syr.edu%2Fdisplay%2Fnetwork%2FWireless%2BNetwork%2Band%2BSystems&data=04%7C01%7Cjemallon%40ua.edu%7Cd061f040ff24484260e608d925d451b2%7C2a00728ef0d040b4a4e8ce433f3fbca7%7C0%7C0%7C637582416102360203%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=v0D%2F0ufRBcRF7qR6YbtZ84uox7986tTBQAEXL%2FD1tzU%3D&reserved=0> > > *SYRACUSE UNIVERSITY* > syr.edu > > > > ********** > Replies to EDUCAUSE Community Group emails are sent to the entire > community list. 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