user6916976 wrote:Has anything changed in that time frame?
These clients previously worked without issue but starting last week ...
... snip ...
rukbat wrote:Given that this started after a maintenance night I'm sure you are correct and something changed. However there are no changes in the maintenance plan that could cause this and nobody will own up to any additional changes. This leaves it to me to try to find what is causing the failure so I can get it corrected.
Has anything changed in that time frame?
Any physical changes such as office-moves? new hires? lay-offs?
Could there have been any modifications to the networking hardware such as lengthening the cabling? Is it possible to re-route the subnet to different switches or to different posts on the switches? You might consider snooping the traffic to watch how it traverses the paths to the LDAP server.
If there are other systems on the subnet, do they experience any sort of timeouts ( even if it is to unrelated tasks such as database access or surfing to the Intranet/Internet ) ?
... just random thoughts from a hardware perspective.