No portal authentication page is pushed for users
Symptom
When a user is redirected to the IMC portal authentication server, no portal authentication page or error message is prompted for the user. The login page is blank.
Analysis
The key configured on the portal access device and that configured on the portal authentication server are inconsistent. As a result, packet verification fails, and the portal authentication server refuses to push the authentication page.
Solution
Use the display portal server command on the access device to check whether a key is configured for the portal authentication server.
If no key is configured, configure the right key.
If a key is configured, use the ip or ipv6 command in the portal authentication server view to correct the key, or correct the key configured for the access device on the portal authentication server.