How do I support an SP that requires an IdP-first setup?

[Tom Scavo]

On Tue, Dec 20, 2011 at 6:47 PM, Jason Holland <jholland at olp.net> wrote:
> I have an SP that instructs to have an IdP-first setup where the user
> would visit the IdP first to authenticate then be redirected to the SP.
> I couldn't find any documentation on this. Does Shibboleth support this
> setup?

https://wiki.shibboleth.net/confluence/display/SHIB2/IdPUnsolicitedSSO

HTH,
Tom