In previous blog I described basics functional keys of the LISP and how it works for LISP-to-LISP site communication. In this part I am going to focus on how to interconnect LISP site to non LISP site. There is a challenge to provide communication between LISP and no LISP sites because they have completely separate database of connectivity information and use different control plane protocols. The whole idea behind the LISP is a separation of EID and RLOC so using any redistribution mechanism between LISP and non LISP site would contradict the entire purpose of LISP, which is locator and identifier separation.

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