Some way to send data from one FTP server to another without intermediary?

I'm trying to move a large amount of files from one CDN to another. I know that they have a very high-speed connection to each other, so what I'd like to do is connect them directly, but the only protocol I have access to with each is FTP. Is there any way to log into the current CDN and se开发者_Go百科nd their files to the other FTP? It seems like it should be possible, I just have no idea how to do it.

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FXP: see Wikipedia article. Powerful FTP clients are capable of doing this. From protocol point of view it's trivial.

BTW this question is probably offtopic here.