AP monitoring

[AlexKlmv]

Hello everybody!
WLC 5508 controller

Please advize how to more competently monitor a specific access point for falling off clients and establish this with the cause of the failure.
Sometimes clients fall off a specific AP, there is an assumption that a bad signal.
I want to understand the reason why the access point falls off.
What are the options? Is it possible to dump a point? or perhaps with snmp ?! In syslog I did not see any entries on this score

[patoberli · Accepted solution]

If a client leaves an AP, an SNMP trap similar to this is generated:

Client Disassociated: MACAddress:d8:c4:6a:xx:xx:xx, Base Radio MAC:00:ea:bd:xx:xx:xx, Slot:1, Username:xxxxxxxx, IP Address:x.x.x.132, Reason:Un-specified reason, ReasonCode:1, TxPkts:0l, TxBytes:0l, RxPkts:0l, RxBytes:0l

So you could send those to a trap receiver and filter them.

Another way is to debug a client mac address and have him roam to and away from the affected AP in the hope of the error happening at that time. Debug commands: https://www.cisco.com/c/en/us/support/docs/wireless/aironet-1200-series/100260-wlc-debug-client.html

Besides this, have you already restarted the AP? This can fix various issues. Make sure to remove power for 10+ seconds to clear out all buffer chips.

Of course, if it's a signal problem, check the associated clients and their signal quality for hints.