5V0-42.21 · Question #10
Which port is used for communication between VMware SD-WAN Edge and Orchestrator if there are no tunnels established to the Gateways?
The correct answer is B. TCP 80. TCP 80 is the fallback communication port that VMware SD-WAN Edges use to reach the Orchestrator when no VCMP tunnels to Gateways have been established - this covers the bootstrap phase or any scenario where Gateway connectivity is unavailable, allowing the Edge to still…
Question
Which port is used for communication between VMware SD-WAN Edge and Orchestrator if there are no tunnels established to the Gateways?
Options
- AUDF 2426
- BTCP 80
- CTCP 443
- DUDP 500
How the community answered
(65 responses)- A8% (5)
- B86% (56)
- C2% (1)
- D5% (3)
Explanation
TCP 80 is the fallback communication port that VMware SD-WAN Edges use to reach the Orchestrator when no VCMP tunnels to Gateways have been established - this covers the bootstrap phase or any scenario where Gateway connectivity is unavailable, allowing the Edge to still receive configuration and management traffic directly.
Why the distractors are wrong:
- UDP 2426 is the VCMP (VeloCloud Multipath Protocol) port used for Edge-to-Gateway data plane tunnels - not Edge-to-Orchestrator management traffic.
- TCP 443 is used for HTTPS access to the Orchestrator UI by administrators, not for the Edge management channel in this specific no-tunnel scenario.
- UDP 500 is the IKE/IPsec port for key exchange in VPN tunnels - unrelated to Orchestrator management communication.
Memory tip: Think "80 = before tunnels begin." Port 80 (HTTP) feels like the most "basic" fallback, and that's exactly when it's used - when the Edge hasn't yet bootstrapped its secure tunnel infrastructure and needs a simple path to phone home to the Orchestrator.
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