NG WDM equipment uses Ethernet frames to carry MPLS packets

Question

Options

• ATrue
• BFalse

• A
  75% (15)
• B
  25% (5)

Explanation

Option A is correct because NG WDM (Next Generation Wavelength Division Multiplexing) systems are packet-aware optical transport platforms that natively support Ethernet as a client-layer protocol - and MPLS packets are encapsulated inside Ethernet frames using EtherType 0x8847 (unicast) or 0x8848 (multicast) before being handed off to the optical layer. This Ethernet-over-OTN approach allows NG WDM equipment to bridge the IP/MPLS packet domain with the optical transport domain efficiently. Option B is wrong because it incorrectly assumes NG WDM carries raw MPLS directly or uses a different framing mechanism; the Ethernet encapsulation step is integral to how NG WDM integrates with router/switch infrastructure.

Memory tip: Think of Ethernet as the "envelope" and MPLS as the "letter inside" - NG WDM reads the envelope (Ethernet) to move the letter (MPLS) across the optical network. The "NG" in NG WDM signals packet awareness, which means Ethernet framing is always in the picture.

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