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300-515 · Question #89

Which two differences must an engineer consider when choosing between Layer 2 and Layer 3 VPNs? (Choose two.)

The correct answer is B. VPLS is a Layer 2 VPN and MPLS/BGP VPN is a Layer 3 VPN. D. E-VPN is a Layer 2 VPN and IPsec is a Layer 3 VPN. VPLS vs. MPLS/BGP VPN: VPLS provides an Ethernet-based Layer 2 VPN service over an MPLS core, transparently extending customer VLAN domains. In contrast, MPLS/BGP VPNs operate at Layer 3, exchanging IP routes and using VRFs to segregate customer IP spaces. E-VPN vs. IPsec: EVPN…

Layer 2 VPNs

Question

Which two differences must an engineer consider when choosing between Layer 2 and Layer 3 VPNs? (Choose two.)

Options

  • AVPWS is a Layer 2 VPN and VLL in SVC mode is a Layer 3 VPN.
  • BVPLS is a Layer 2 VPN and MPLS/BGP VPN is a Layer 3 VPN.
  • CMPLS is a Layer 2 VPN and Frame Relay is a Layer 3 VPN.
  • DE-VPN is a Layer 2 VPN and IPsec is a Layer 3 VPN.
  • EDMVPN is a Layer 2 VPN and VPLS is a Layer 3 VPN.

How the community answered

(45 responses)
  • A
    2% (1)
  • B
    91% (41)
  • C
    2% (1)
  • E
    4% (2)

Explanation

VPLS vs. MPLS/BGP VPN: VPLS provides an Ethernet-based Layer 2 VPN service over an MPLS core, transparently extending customer VLAN domains. In contrast, MPLS/BGP VPNs operate at Layer 3, exchanging IP routes and using VRFs to segregate customer IP spaces. E-VPN vs. IPsec: EVPN is a modern Ethernet (Layer 2) VPN solution leveraging BGP for MAC route distribution, while IPsec creates secure Layer 3 tunnels by encapsulating and encrypting IP

Topics

#VPLS#VPWS#EVPN#Layer 2 vs Layer 3 VPN

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