In Huawei SD-WAN solution, which of the following networks does the management channel access the iMaster NCE WAN controller?

Question

Options

• ACampus network
• BUnderlay WAN network
• CLAN side network
• DOverlay network

• A
  13% (7)
• B
  75% (39)
• C
  4% (2)
• D
  8% (4)

Explanation

In Huawei SD-WAN, CPE devices must reach the iMaster NCE controller before the overlay is established - so the management channel relies on the Underlay WAN network (the physical transport links: internet, MPLS, 4G/5G). The underlay exists independently and provides the raw connectivity the controller needs to discover, authenticate, and configure each CPE.

Why the distractors are wrong:

• A (Campus network) and C (LAN side network) are internal networks local to a site - they have no direct path to the WAN controller, which resides centrally in the cloud or data center.
• D (Overlay network) is the logical tunnel layer that SD-WAN builds on top of the underlay. The controller must be reachable to create the overlay in the first place, so the management channel cannot depend on it.

Memory tip: Think of it as "ground before sky" - the underlay is the ground (physical WAN), the overlay is the sky (logical tunnels). Management must walk on the ground to build the sky, so the controller is always reached via the underlay.

No community discussion yet for this question.