Controller : C9800-L (HA config)
Version : 17.9.5 (upgraded due to the DTLS issue from 17.6.5)
AP: C9120AXI
Software Version
17.9.5.47
Boot Version
1.1.2.4
Last Statistics Received
05/22/2024 10:02:26
Current Memory Usage (%)
43
Average Memory Usage (%)
43
Switch: 9300L 48 port POE
I have apparently one AP that keeps losing connectivity to the WLC and a couple less concerning that are a few weeks out. The one AP seems to drop randomly (I see it often happens during the working day) the DTLS connection. I cannot figure out why. Up time is consistent and client connectivity is impacted, but I lose them briefly from the controller and they rejoin.
Checked so far:
- Wireless configuration - using tool
- verified switch configuration (same as all other APs that work)
- Already have timers at 8/5
- All other APs are working fine
- Switchport shows no errors/swapped ports as well
- Did an ethernet line test with all pairs showing pass/good.
- Ran a pcap and packet trace with dump on WLC when DTLS session ends, and little to go on.
- Replaced the AP completely with a new unit.
- IOS was upgraded to 17.9.5
- Looked into CSCwa23659, but it should be resolved with this IOS.
Cisco C9800 AP disconnected due to max retransmission reached
