300-420 Question #190: Real Exam Question with Answer & Explanation

The correct answer is B: host tracking databasepolicy. In a Cisco SD-Access architecture, the Control Plane node uses LISP to manage host location information and provide mapping services across the fabric.

Advanced Enterprise Campus Networks

Question

Which two functions does the control plane node provide in a Cisco SD-Access architecture? (Choose two.)

Options

ALISP proxy ETR
Bhost tracking databasepolicy
Cmapping
Dmap server
Eendpoint registration

Explanation

In a Cisco SD-Access architecture, the Control Plane node uses LISP to manage host location information and provide mapping services across the fabric.

Common mistakes.

A. LISP proxy ETR (PxETR) is a data plane function typically performed by a fabric border node to route traffic to and from non-LISP domains.
C. While the control plane orchestrates policy application, 'policy mapping' is a general term; the specific core LISP functions of the control plane are related to host tracking and map services.
E. Endpoint registration is a function performed by the fabric edge nodes (ETRs) when they send host reachability information to the Control Plane node (Map-Server).

Concept tested. Cisco SD-Access Control Plane roles (LISP Map-Server/HTDB)

Reference. https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html#_concept_sd_access_network_roles

Topics

#Cisco SD-Access#Control Plane Node#LISP#Campus Fabric

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