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300-515 · Question #161
What is a key difference between Layer 2 VPNs and Layer 3 VPNs?
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Layer 2 VPNs
Question
What is a key difference between Layer 2 VPNs and Layer 3 VPNs?
Options
- ALayer 2 VPNs encapsulate Ethernet frames in MPLS packets, and Layer 3 VPNs use labeled BGP
- BLayer 2 VPNs require the use of a Layer 2 forwarding plane with per-site MAC learning, and Layer
- CLayer 2 VPNs can propagate VLAN tags across the MPLS network, and Layer 3 VPNs use BGP
- DLayer 2 VPNs provide Layer 2 transport using pseudowires, and Layer 3 VPNs abstract Layer 2
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Topics
#Layer 2 VPN#Layer 3 VPN#pseudowire#MPLS encapsulation