Which LISP component accepts traffic from non-LISP sites destined for LISP sites to provide connectivity?
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Correct answer: PITR.
Why this is the answer
A Proxy Ingress Tunnel Router (PITR) is a LISP component that accepts IP packets from non-LISP sites (e.g., the traditional internet) and encapsulates them to forward to LISP sites. It acts as a gateway, providing connectivity for non-LISP hosts to reach LISP-enabled destinations. The map resolver is used by ITRs and ETRs to find EID-to-RLOC mappings. The map server stores EID-to-RLOC mappings and responds to map requests. A Proxy Egress Tunnel Router (PETR) is the LISP component that decapsulates traffic from LISP sites destined for non-LISP sites.
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