Which two LISP infrastructure elements are needed to support LISP to non-LISP internetworking? (Choose two)

IT Questions BankCategory: CCNPWhich two LISP infrastructure elements are needed to support LISP to non-LISP internetworking? (Choose two)
Which two LISP infrastructure elements are needed to support LISP to non-LISP internetworking? (Choose two) 1ITExamAnswers Staff asked 1 month ago
Question:
Which two LISP infrastructure elements are needed to support LISP to non-LISP internetworking? (Choose two)

  • A. PETR
  • B. PITR
  • C. MR
  • D. MS
  • E. ALT

Explanation: In this question we suppose that we only need to send packets from LISP site to non-LISP site successfully. We don‘t care about the way back (if we care about the way back then all PETR, PITR, MS & MR are needed).

Proxy Egress Tunnel Router (PETR): A LISP device that de-encapsulates packets from LISP sites to deliver them to non-LISP sites.

Which two LISP infrastructure elements are needed to support LISP to non-LISP internetworking? (Choose two) 2

When the xTR in LISP Site 1 want to sends traffic to Non-LISP site, the ITR (not PETR) needs a Map Resolver (MR) to send Map Request to. When the ITR (the xTR in LISP Site 1 in the figure above) receives negative MAP-Reply packet from MR, it caches that prefix and map it to the PETR.

Good reference: Here

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