Hi, Here is something I came across.. https://community.cisco.com/t5/wireless-and-mobility/transitioning-between-2-4-and-5-0-on-the-same-ssid/td-p/2921943
Hope this helps. Yahya Jaber. Sr. Wireless Engineer IT Network & Communications - Engineering Building 14, Level 3, Rm 308-WS07 KAUST 23955-6900 Thuwal, KSA Email yahya.ja...@kaust.edu.sa<mailto:yahya.ja...@kaust.edu.sa> Office +966 (0) 12 8081237 Mobile +966 (0) 558697555 On Call Rotation Mobile: +966 54 470 1177 From: The EDUCAUSE Wireless Issues Community Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Gray, Sean Sent: Wednesday, October 23, 2019 19:21 To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: [WIRELESS-LAN] Android 10 Weirdness - Cisco Hi Gang, I'm not sure how much of a problem this is on our network, and I haven't spoken with Cisco TAC yet. But I wanted to share what I have seen from a client, in case anyone else has seen the same issue. We are running 8.8.125.0 on a HA pair of 5520s We have an Android cell phone, running Android 10, that is reported to be disconnecting from the network. When I run a debug I see the following behaviour: * Client associates to an 1815w in Student Residence * Client performs an intra-roam on the AP from 2.4Ghz to 5GHz, or vice versa * WLC sends an EAP-Identity-Request * Client doesn't respond * Client session is timed out and client is de-authed This dance seems to repeat whenever an intra roam occurs and has only been noticed/reported when they are associated to an 1815w New associations are fine. Has anyone seen this before? Could it be related to this being a sleepy client? Client goes to sleep, but the WLC fails to correctly define it and responds as if the client is just being unresponsive? Could it be another AireOS bug? Is this just a client side bug? Thanks Sean Sean Gray | B.Sc (Hons) Voice, Collaboration & Wireless Network Analyst ITS, University of Lethbridge ********** 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 ********** 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