The log “chatter: lat_client_add(422): Failed to add client” is documented in CSCvv78366. The release notes for 8.10.151 say that it is resolved, but it is not. From the troubleshooting I’ve done, even on MR5, it appears this bug is purely cosmetic. I have not had issues connecting to APs experiencing this bug when I have tested. The biggest issue with this bug is all the trash that is generating.
Hector Rios, UT Austin From: The EDUCAUSE Wireless Issues Community Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> On Behalf Of Mathieu Sturm Sent: Tuesday, June 8, 2021 2:03 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] [EXTERNAL] [WIRELESS-LAN] Cisco 8540 Code Recommendation, Based on Stability? Hello all, We were struggling with this issue as well on version 8.10.130.0. We created a tac case (SR 690110031) last year but due to covid and lockdowns we couldn’t reproduce the issue. We only saw these issues on places where there was a lot of clients/roaming. On these ap’s the logs were filled with “chatter: lat_client_add(422): Failed to add client”. Not sure if this was related though. We only saw this issue on newer ap’s (2800/3800 and 9120’s). No fix so far (and apparently not even in 8.10.151). Cisco pointed us to bug id CSCvv78719 and we had to disable MU-MIMO. We weren’t able to verify this fix. Regards Mathieu Sturm Hoofdmedewerker Netwerkbeheer [https://www.hogent.be/www/assets/Image/logo2018.png] Directie Financiën, Infrastructuur en IT Afdeling Netwerkbeheer Campus Schoonmeerssen - Gebouw B Lokaal B0.75 Valentin Vaerwyckweg 1 - 9000 Gent +32 9 243 35 23 www.hogent.be<https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.hogent.be%2F&data=02%7C01%7Cmathieu.sturm%40hogent.be%7C86879fbc6e8c49ab13ff08d67ac4edef%7C5cf7310e091a4bc5acd726c721d4cccd%7C1%7C0%7C636831383554731873&sdata=8NfYjNEE4XDViDT6wMtCYFa0cY8g5CXqS9kf7VtYBcU%3D&reserved=0> Van: The EDUCAUSE Wireless Issues Community Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> Namens Jonathan Oakden Verzonden: woensdag 2 juni 2021 17:38 Aan: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Onderwerp: Re: [WIRELESS-LAN] [EXTERNAL] [WIRELESS-LAN] Cisco 8540 Code Recommendation, Based on Stability? 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<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> on behalf of Lee H Badman <000000db5b77bd95-dmarc-requ...@listserv.educause.edu<mailto:000000db5b77bd95-dmarc-requ...@listserv.educause.edu>> Date: Wednesday, 2 June 2021 at 16:30 To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto: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<mailto: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<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbst.cloudapps.cisco.com%2Fbugsearch%2Fbug%2FCSCvp31778&data=04%7C01%7Cmathieu.sturm%40HOGENT.BE%7C773a0b9ace374aadd25d08d925dc83d4%7C5cf7310e091a4bc5acd726c721d4cccd%7C1%7C0%7C637582451303687383%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=GKzgZL5hqtw%2BMtgghMUPe7aX1SFkCMhCIpdReyqGGUU%3D&reserved=0> 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<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> on behalf of Lee H Badman <000000db5b77bd95-dmarc-requ...@listserv.educause.edu<mailto:000000db5b77bd95-dmarc-requ...@listserv.educause.edu>> Date: Wednesday, 2 June 2021 at 16:06 To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto: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 Syracuse, New York 13244 t 315.443.3003 e lhbad...@syr.edu<mailto:lhbad...@syr.edu> w its.syr.edu Campus Wireless Policy: https://answers.syr.edu/display/network/Wireless+Network+and+Systems<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fanswers.syr.edu%2Fdisplay%2Fnetwork%2FWireless%2BNetwork%2Band%2BSystems&data=04%7C01%7Cmathieu.sturm%40HOGENT.BE%7C773a0b9ace374aadd25d08d925dc83d4%7C5cf7310e091a4bc5acd726c721d4cccd%7C1%7C0%7C637582451303687383%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=fM0RnC0g%2Bv%2BCf%2FNH0jISNysunJvP6HRVoq4ZcWGqmVc%3D&reserved=0> SYRACUSE UNIVERSITY syr.edu From: The EDUCAUSE Wireless Issues Community Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> On Behalf Of Jason Mallon Sent: Wednesday, June 2, 2021 10:58 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto: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://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ua.edu%2F&data=04%7C01%7Cmathieu.sturm%40HOGENT.BE%7C773a0b9ace374aadd25d08d925dc83d4%7C5cf7310e091a4bc5acd726c721d4cccd%7C1%7C0%7C637582451303697377%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=df3leAEBCH%2BgfZ6enVHNNdkNYbqyjUIZoQVvK5GomV8%3D&reserved=0>jemal...@ua.edu<mailto:jemal...@ua.edu> <image001.png> From: The EDUCAUSE Wireless Issues Community Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> on behalf of Lee H Badman <000000db5b77bd95-dmarc-requ...@listserv.educause.edu<mailto:000000db5b77bd95-dmarc-requ...@listserv.educause.edu>> Date: Wednesday, June 2, 2021 at 9:40 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto: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? 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