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Which statement is correct about the Edge1 device in this scenario?

Referring to the exhibit, PE1 and PE2 are acting as MPLS Layer 3 VPN PEs to provide the DCI between DC1 and DC2, which are IP Fabrics. Leaf 1 and Leaf 2 are QFX5100 Series devices acting as VXLAN Layer 2 Gateways using EVPN signaling for the same VXLAN segment.

Which statement is correct about the Edge1 device in this scenario?
A . Edge1 must be configured for MP-BGP using EVPN signaling.
B . Edge1 must be configured for MP-BGP using L3VPN signaling.
C . Edge1 must be configured for BGP labeled unicast on its PE1-facing interface.
D . Edge1’s routing table must contain an IP route to both Leaf1 and Leaf2.

Answer: D

Explanation:

Assumption here that the MPLS backbone network offers EVPN; this is the most fully-featured solution. This could also be achieved via C; BGP-LU shared with the provider, basically extending MPLS down to the Edge1+2 routers; this is less ‘risky’ for the MPLS backbone operator. B and D are ignoring EVPN/VXLAN components and refer to traditional Layer 3 IP routing.

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