Jgreen
Thanks for your comment.
>>Were you able to correlate the "Maximum retries" message with the clients that were having problems?
No, it was due to 802.1x enabled on config even though clients are not 802.1x disabled. It may be not related to the issue.
I checked old log. The users were on the user table as well as station table. So they might now be deleted.
But I need to double check because worker might not take the log in correct timing.
I opened SR, but they just said to set some user debug to reoccur. We have not reproduced it since then because they added session acl to prevent it. So the case was stuck.
I asked to upgrade to 6.x to isolate the issue as one DHCP offer bug was fixed.
Regards
Simon