Hi experts,
Sorry for replying to this older thread, but I’m really in need of some ideas to help resolve an ongoing issue.
The customer is running an R81.20 VSX environment. There are 5 VS instances with Identity Awareness (IC) enabled, and each VS is associated with two IDC Servers for redundancy. Each IDC Server, in turn, is connected to more than 40 Domain Controllers.
On the Security Gateway, running pep show pdp all shows that the number of users exceeds 40,000.

The customer relies heavily on Access Roles to control Internet access, so the stability of Identity Awareness is critical. However, they frequently report that during morning peak hours, a small number of users—who should already be authorized by Access Roles—are unable to access the Internet.
When checking the logs, we found that for the affected users, there is often a delay of more than 30 minutes between the time their PCs connect to the network after booting and the time their Identity login is successfully completed.
Over the past two years, we have opened countless support cases, but we still cannot guarantee stable behavior.
Are there any other approaches or best practices that could help improve this situation?