Is the gate of Ar-Rayyan mentioned in the noble Hadith one of the gates for entering Paradise, or is it a gate within Paradise?

The aforementioned Hadith is agreed upon, and the wording in Al-Bukhari is: "Indeed, in Paradise there is a gate called Ar-Rayyan, through which only those who fast will enter on the Day of Resurrection. No one else will enter through it. It will be said: 'Where are those who fasted?' So they will stand up, and no one else will enter through it. Once they have entered, it will be closed, and no one else will enter through it." This gate is one of the eight gates of Paradise.