Hi,
We are facing an issue where all guest clients are taking too long time (2 or 3 minutes) to load the web portal, or simply fail to load it in the first try. Then after the first try, everything works fine if clients disconnect and connect againt, and they are able to load the web portal pretty fast. When we detect the issue in the first try, I cannot see any traffic reaching the ISE, and if I try to ping the client from the local router, I cannot reach the client, despite of the client getting an IP address from DHCP server (which is the local router).
Are you aware of a bug or some parameter which could bring this issue?
The Guest WLAN is configured in Local Switching, and redirect ACL is correctly configured according to the lastest section in this guide:
https://community.cisco.com/t5/security-documents/ise-and-catalyst-9800-series-integration-guide/ta-p/3753060#toc-hId-186721248
Thanks.
EDIT: Adding more information:
C9800-CL - IOS: 7.3.3
AP1832I
Comparing the WLC debugs, the output is the same when it fails, compate to when it works fine.
Currently checking the issue with the TAC but without success.
