I have a guest SSID configured in my WLC. I also have 2 ISE appliances (Primary/Secondary) that I use to do the web auth on my guest SSID.
In the config of my SSID (Security / Layer 3 / Web Policy), I selected "Web Auth Type: External" and I had to enter the URL of my ISE server. I used the primary ISE but if the primary fails, I have to manually change that URL to the secondary for web auth to continue to work. How can I automate this? Is there a way to configure a virtual IP address (like NAC CAS) for my 2 ISE?