Cisco SD-WAN Orchestration Plane Functions

300-420 By islever Editorial Last updated

Describe Cisco SD-WAN architecture (orchestration plane, management plane, control plane, data plane, on-boarding and provisioning, security)

Short answer

BC The Cisco SD-WAN orchestration plane provides primary authentication and facilitates NAT traversal through the vBond orchestrator.

Question

Which two functions are provided by the Cisco SD-WAN orchestration plane? (Choose two.)
  1. centralized provisioning
  2. primary authentication point Correct Answer
  3. NAT traversal facilitation Correct Answer
  4. Zero Touch Provisioning
  5. troubleshooting and monitoring

Key Takeaways

The trap is confusing the Management Plane (provisioning/monitoring) with the Orchestration Plane (bootstrap/auth/NAT). Remember vBond does auth and NAT help.

Identify the two key functions of the Cisco SD-WAN orchestration plane: primary authentication and NAT traversal facilitation.

Common mistake: Candidates often choose Zero Touch Provisioning (D) because it involves the orchestration plane. However, ZTP is an end-to-end process; the specific architectural function of the orchestration plane is facilitating this via auth and NAT traversal.

Expert Analysis

The Cisco SD-WAN architecture is divided into four planes: Management, Control, Data, and Orchestration. The Orchestration Plane is primarily handled by the vBond orchestrator. Its main role is to bootstrap the other controllers (vManage and vSmart) and the WAN Edge routers into the fabric.

According to Cisco's official design guides, the vBond orchestrator performs two critical initial functions:

  1. Authentication: It acts as the first point of contact for all devices, verifying their certificates and identity before allowing them to join the network.
  2. NAT Traversal Facilitation: Because vBond has a public IP address, it helps NATed devices discover each other's public endpoints using the STUN protocol, enabling connectivity across Network Address Translation boundaries.

While Zero Touch Provisioning (ZTP) involves the orchestration plane (as the device contacts vBond during boot), ZTP itself is a broader onboarding workflow that includes configuration download from vManage. Therefore, ZTP is not listed as a discrete function of the orchestration plane in the same way authentication and NAT traversal are defined in the architecture documentation. Options A, D, and E belong to the Management Plane (vManage handles provisioning, troubleshooting, and monitoring).

Comments in the source material show confusion between B/C and B/D. However, the authoritative Cisco CVD explicitly lists 'First point of authentication' and 'Facilitates NAT traversal' as the characteristics of the vBond/orchestration plane.

Official Reference

https://www.cisco.com/c/en/us/td/docs/solutions/CVD/SDWAN/cisco-sdwan-design-guide.html

This link opens the official vendor documentation in a new tab.

Exam Strategy

When asked about SD-WAN planes, map the controller names to their responsibilities: vManage = Management, vSmart = Control, vBond = Orchestration. For vBond specifically, remember it handles the 'handshake': Authentication and NAT Traversal. Do not confuse these with data plane features or management tasks like policy definition.

Frequently Asked Questions

What is the role of the vBond orchestrator?

The vBond orchestrator authenticates devices and facilitates NAT traversal, helping devices discover each other's public IPs to establish secure tunnels.

Is Zero Touch Provisioning part of the orchestration plane?

ZTP uses the orchestration plane for initial discovery, but ZTP itself is a multi-step process involving the management plane. The specific functions of the orchestration plane are authentication and NAT traversal.

More 300-420 FAQ →

Community Votes

B
50%
C
38%
D
12%

50% of anonymous learners picked answer B. Votes are pick records left by other test-takers — they are not the verified answer.

Discussion 7 contributions

Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.

From public community threads 7

  1. PicoOstrava 👍 5
    As per cisco u:The main characteristics of Cisco vBond orchestrator are: Orchestrates connectivity First point of authentication Distributes list of vSmarts and vManage to all WAN Edge routers Facilitates NAT traversal Requires public IP address (could sit behind 1:1 NAT)
  2. CCNPWILL 👍 5
    Correct. B and C are responsibilities of the vBond which handles orchestration.
  3. GustavoF 👍 3
    B and C are correct. https://www.cisco.com/c/en/us/td/docs/solutions/CVD/SDWAN/cisco-sdwan-design-guide.html
  4. Pminiakhmetov 👍 2
    ChatGPT says that BC correct. Link https://www.cisco.com/c/en/us/td/docs/solutions/CVD/SDWAN/cisco-sdwan-design-guide.html tell that correct answer is B and D. NAT Traversal Facilitator correspond to Data Plane, not Orchestration Plane
  5. Pminiakhmetov 👍 2
    I think B and D are correct
Show 2 more comments
  1. G_Singh12 👍 1
    Just to add to my last comment, While Zero Touch Provisioning (ZTP) communicates with the orchestration plane to discover where its specific controllers live, ZTP itself is an overall onboarding framework rather than a discrete function belonging strictly to the orchestration layer.
  2. muffedtrims 👍 1
    NAT traversal is part of the data plan. Correct answer is B & D Orchestration plane provides authentication and ZTP

Reader comments & corrections

No reader corrections yet — spotted an error or have a note? Share it below.

Log in to comment, report an error, or add a note about this question.

POV Report Builds the Customer Platform During Discovery

S-grade

VPLS design for sites sharing one IP subnet

S-grade

Inter-VN Communication in Cisco SD-WAN Architecture

S-grade

Advertising a Default Route from Core to Aggregation to Hide Instability

S-grade

Practice All 300-420 Questions

Access 150 questions with complete answers and detailed explanations.

View Full 300-420 Practice Test →

← Back to 300-420 Study Guide