300-320 · Question #88
Which option is an advanced WAN services design consideration for a multipoint architecture that connects two or more customer devices using Ethernet bridging techniques over an MPLS network?
The correct answer is A. VPLS. VPLS (Virtual Private LAN Service) is a Layer 2 MPLS-based VPN technology that emulates a LAN across a provider's MPLS network. It bridges Ethernet frames between multiple customer sites, making geographically dispersed locations appear as if they share the same local Ethernet…
Question
Which option is an advanced WAN services design consideration for a multipoint architecture that connects two or more customer devices using Ethernet bridging techniques over an MPLS network?
Options
- AVPLS
- BMetro Ethernet
- CMPLS
- DSONET/SDH
How the community answered
(25 responses)- A88% (22)
- B4% (1)
- C8% (2)
Explanation
VPLS (Virtual Private LAN Service) is a Layer 2 MPLS-based VPN technology that emulates a LAN across a provider's MPLS network. It bridges Ethernet frames between multiple customer sites, making geographically dispersed locations appear as if they share the same local Ethernet segment. This enables multipoint-to-multipoint connectivity. Metro Ethernet provides Ethernet connectivity but is not inherently MPLS-based bridging; MPLS itself is the transport technology; and SONET/SDH is a physical-layer circuit technology.
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