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Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) · Cisco
Select one answer.
Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.
LISP → Non-LISP: Proxy ETR (PETR) Non-LISP → LISP: Proxy ITR (PITR)
Correct Answer C The Proxy ITR (P-ITR) is the correct answer because it enables a non-LISP site to send traffic to a LISP site, which is the foundational step for communication between the two. The Proxy ETR (P-ETR), while important for LISP-to-non-LISP traffic, isn’t the primary component for enabling the initial communication from a non-LISP site, which is implied by the question’s focus. Cisco’s documentation supports this prioritization of the P-ITR for non-LISP-to-LISP integration.
Proxy ETR (PETR): A PETR is a LISP Infrastructure device that allows EIDs at LISP sites to successfully communicate with devices located at non-LISP sites