350-401 · Question #1051
Which technology is used as the basis for the Cisco SD-Access data plane?
The correct answer is C. VXLAN. Cisco SD-Access utilizes VXLAN as the foundational data plane encapsulation technology to extend Layer 2 segments over a Layer 3 network.
Question
Options
- ALISP
- B802.1Q
- CVXLAN
- DIPsec
How the community answered
(24 responses)- A4% (1)
- C96% (23)
Why each option
Cisco SD-Access utilizes VXLAN as the foundational data plane encapsulation technology to extend Layer 2 segments over a Layer 3 network.
LISP (Location/ID Separation Protocol) is utilized in Cisco SD-Access as the control plane technology for endpoint identification and mapping, not for data plane encapsulation.
802.1Q is the standard for VLAN tagging on Ethernet frames, primarily used in traditional Layer 2 networks, but not the underlying data plane encapsulation for the SD-Access fabric.
In Cisco SD-Access, VXLAN (Virtual Extensible LAN) is the primary data plane encapsulation protocol. It is used to create logical network overlays that segment user and device traffic into virtual networks that can span the underlying physical IP network.
IPsec is a security protocol used for encryption and authentication of IP packets, which can be applied to traffic but is not the fundamental encapsulation method for the SD-Access data plane itself.
Concept tested: Cisco SD-Access data plane technology
Source: https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sd-access-design-guide.html
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