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…
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)- A2% (1)
- B91% (41)
- C2% (1)
- E4% (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
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