Which two LISP components are supported?
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Correct answer: Proxy ETR, Egress Tunnel Router.
Why this is the answer
LISP (Location/ID Separation Protocol) uses several key components. An Egress Tunnel Router (ETR) is a LISP device that accepts IP packets from site-internal hosts, encapsulates them, and forwards them across the LISP infrastructure to an Ingress Tunnel Router (ITR). A Proxy ETR (PETR) functions as an ETR for non-LISP sites, allowing them to communicate with LISP sites. Route reflectors are BGP components, not LISP. HMAC is a cryptographic algorithm, not a LISP component. "Spoke" is a term often used in hub-and-spoke network topologies, not a specific LISP component.
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