My client has 2 WFEs. I have seen that the web applications and sites that I create in 1 server are mirrored in another server. But if I try to access sites under those web apps from another wfe using that wfe url, they don't load even though they are present. They typically show an unauthorized error or show the login popup 3 times before showing unauthorized. Why does this happen? Also, if a server goes down, can I use another wfe to open the same site? How do I set this up? I need to do it for an existing web application.