300-420 Question #303: Real Exam Question with Answer & Explanation

The correct answer is A: border nodes. In an SD-Access fabric, border nodes are responsible for connecting the fabric to external networks and handling traffic routing in and out of the fabric.

Advanced Enterprise Campus Networks

Question

Which component of the SD-Access fabric is responsible for communicating with networks that are external to the fabric?

Options

Aborder nodes
Bcontrol plane nodes
Cintermediate nodes
Dedge nodes

Explanation

In an SD-Access fabric, border nodes are responsible for connecting the fabric to external networks and handling traffic routing in and out of the fabric.

Common mistakes.

B. Control plane nodes (based on LISP) manage the mapping of endpoint identifiers (EIDs) to routing locators (RLOCs) within the fabric, but they do not directly communicate with external networks for traffic forwarding.
C. 'Intermediate nodes' is not a standard architectural component within the Cisco SD-Access fabric design.
D. Edge nodes connect end devices to the fabric, handle host registration, and provide ingress policy enforcement, but they are not primarily responsible for external network communication.

Concept tested. SD-Access fabric components and roles

Reference. https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Campus/sda_design_guide/cda_design_guide/ch2_sda_fabric_design.html

Topics

#SD-Access#Border Node#Fabric Architecture#External Connectivity

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