300-420 · Question #243
In a Cisco SD-Access fabric, which node facilitates connectivity between the fabric and networks external to the fabric?
The correct answer is D. border. In Cisco SD-Access, the border node is the demarcation point between the fabric overlay and external networks, handling policy translation and routing hand-off.
Question
In a Cisco SD-Access fabric, which node facilitates connectivity between the fabric and networks external to the fabric?
Options
- Aintermediate
- Bedge
- Ccontrol plane
- Dborder
How the community answered
(37 responses)- A3% (1)
- B5% (2)
- D92% (34)
Why each option
In Cisco SD-Access, the border node is the demarcation point between the fabric overlay and external networks, handling policy translation and routing hand-off.
Intermediate is not a defined node role in the Cisco SD-Access fabric architecture.
Edge nodes connect end-user devices and endpoints into the fabric but do not provide connectivity to networks outside the fabric.
Control plane nodes run the LISP map-server and map-resolver functions for endpoint registration and lookup within the fabric, not external connectivity.
Border nodes sit at the edge of the SD-Access fabric and connect it to external Layer 3 networks such as the internet, data center, or traditional campus segments. They translate fabric policies and LISP/VXLAN encapsulation into standard routing protocols understood by external devices, making them the sole point of external connectivity.
Concept tested: SD-Access fabric node roles - border node
Source: https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html
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