Hi ,
Please aware about bug : <https://tools.cisco.com/bugsearch/bug/CSCvu61194> CSCvu61194 : AP 2800/3800 sends burst of RTS and BAR randomly leading to low client data rates Symptom: During normal operation, randomly we see bunch of RTS/BAR packets being sent from the AP to the client. This leads to lower data rates or packet drops in the network. Customers might also see quality degradation issues with Webex/Skype/MicrosoftTeams audio/video https://www.cisco.com/c/en/us/support/docs/wireless/wireless-lan-controller- software/200046-tac-recommended-aireos.html#anc10 Bug is fixed in 8.5.161.6 -> The CCO 8.10 releases, up through 8.10.122.0 is also effecting. Issue is fixed in 8.10MR2 Escalation code Regards, ICT Services Netwerkbeheer - draadloos Gertjan Scharloo ICT consultant _____ Universiteit van Amsterdam | Hogeschool van Amsterdam Leeuwenburg | kamer A10.20 Weesperzijde 190 | 1097 DZ Amsterdam Tel: +31(0)20 525 4885 Mobiel: +31(0) 61013-5880 <http://www.uva.nl/> www.uva.nl uva.nl/profile/g.scharloo https://time.is/nl/CET Je kunt mij ook bereiken via Skype for Business Van: The EDUCAUSE Wireless Issues Community Group Listserv <[email protected]> Namens Tariq Adnan Verzonden: Friday, July 24, 2020 4:18 AM Aan: [email protected] Onderwerp: [WIRELESS-LAN] Cisco 3800 AP code 8.10 wireless disconnections/drops Hello everyone, Just checking if anyone else is experiencing the wireless disconnection issues like us. So far we have received complaints from multiple sites where we have deployed 3800 model AP on 8.10.121.0. The 3800 on a different controller running code 8.5.161.4 seems to have no issue so far. The drop outs are very random and sometime would happen in the middle of a zoom meeting - very frustrating for students during lecture. I have raised a TAC case and we couldn't reproduce the issue during 1.5 hours troubleshooting session. I am suspecting below bug but unless we recreate the issue and take some logs, Cisco won't recommend any workaround or code upgrade: CSCvt22353 <https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fprotect-a u.mimecast.com%2Fs%2Fv4EjCL7EwMf43ozMc11Fat%3Fdomain%3Dtools.cisco.com&data= 02%7C01%7Cg.scharloo%40UVA.NL%7C75f61532a6344f78b6bc08d82f77cca8%7Ca0f1cacd6 18c4403b94576fb3d6874e5%7C1%7C0%7C637311538874423741&sdata=eOsW%2BbAAv45rHAp 5bNOcm5agsWHe3u2%2BSW2D5v1NHVE%3D&reserved=0> 2800/3800/4800/1560 APs not sending DHCP messages over the air >From bug details: "From AP debugs and OTA captures, we can see some traffic exchange, but at some point AP stops transmitting data frames over the air (could be DHCP, or ICMP, or other data traffic), affecting all clients connected at that time." Thanks, - Cheers, Kind regards, ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community <https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.educa use.edu%2Fcommunity&data=02%7C01%7Cg.scharloo%40UVA.NL%7C75f61532a6344f78b6b c08d82f77cca8%7Ca0f1cacd618c4403b94576fb3d6874e5%7C1%7C0%7C63731153887443373 4&sdata=mTatkIxEAJsyMge%2FMLsJeFYnNuftvkPy42C05YmgOeU%3D&reserved=0> ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community
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