Im seeing this way to many places for it to be a client side issue…
I have quite a few APs that serve wifi customers at hotels…We are seeing many times where someone will continously keep trying to reconnect over a period of serval hours..
all we see in the logs is:
Extensive data loss..
and then a connection 3-10 seconds later…
and extensive data loss again.
SOme of these are on APs where the client has a -70 to -85 signal…anything less i write off as true extensive data loss
We mostly have 8602 radios, but have seen this on cm9’s we have too…MT versions on all APs is greater than 2.9.25
I mean it s a pretty big issue when i have clients who call in and cant seem to connect to my APs but have no issues at home, or when i send them to another location where there is a cheap Linksys wifi Router…
extensive data loss is not a very helpful log message in this sistuation..i can understand it when i’m dealing with someone and a -90 or worst RSSI.