What is the purpose of the LISP routing and addressing architecture?

Question

Options

• AIt creates two entries for each network node, one for Its identity and another for its location on the
• BIt allows LISP to be applied as a network visualization overlay though encapsulation.
• CIt allows multiple Instances of a routing table to co-exist within the same router.
• DIt creates head-end replication used to deliver broadcast and multicast frames to the entire

• A
  93% (28)
• B
  3% (1)
• D
  3% (1)

Explanation

LISP Routing and Addressing Architecture

Why A is Correct: LISP (Locator/ID Separation Protocol) fundamentally separates a device's identity (Endpoint Identifier - EID) from its location (Routing Locator - RLOC), creating two distinct namespaces for each node. This separation solves scalability problems in routing by allowing a device to move locations without changing its identity, reducing the size of the global routing table.

Why the Distractors are Wrong:

• B describes LISP's encapsulation capability, which is a mechanism LISP uses, but not the core purpose of its routing and addressing architecture - LISP is also not primarily a "visualization" tool.
• C describes VRF (Virtual Routing and Forwarding), a completely separate technology that allows multiple routing table instances on one router.
• D describes head-end replication, which is associated with VXLAN or overlay multicast handling, not the fundamental purpose of LISP architecture.

Memory Tip: Think of LISP like a person's name vs. their home address - your name (EID) stays the same even if you move houses (RLOC changes). The word "LISP" itself hints at the separation: Locator/ID SeParation Protocol.

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