QuestionQ32

Campus and Branch WAN Design

Which overlay solution expands the Layer 2 network space across the WAN?

  • A EVPN-VXLAN
  • B IPsec
  • C GRE
  • D MC-LAG
Explanation

EVPN-VXLAN extends Layer 2 connectivity over an IP underlay and uses 24-bit VXLAN Network Identifiers (VNIs), expanding the available Layer 2 segment space from roughly 4,000 VLANs to 16 million VXLAN segments.

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