A set of virtual machines must be live migrated from a data center to a disaster recovery site. The data center and disaster recovery sites are connected through an Inter-Pod Network topology. The gat

VXLAN EVPN extends Layer 2 networks over a Layer 3 underlay, enabling seamless live migration of virtual machines between geographically dispersed data centers without changing their IP address or gateway. This allows the VMs to retain their network identity and connectivity after migration to the DR site.

FabricPath is a Cisco proprietary Layer 2 multipathing technology primarily designed for within-data-center environments to overcome Spanning Tree Protocol limitations, but it does not inherently support stretching Layer 2 across geographically separated sites with a consistent gateway.

FHRR (First Hop Redundancy Protocol) is a general term for protocols like HSRP or VRRP. While essential for gateway redundancy, FHRR alone does not provide the stretched Layer 2 connectivity required for seamless VM migration with a consistent gateway across sites.

VPLS (Virtual Private LAN Service) is an older MPLS-based technology that provides point-to-multipoint Layer 2 VPN services. While it can stretch Layer 2, VXLAN EVPN is the modern, more flexible, and widely adopted solution in Cisco Nexus data centers for this specific use case, especially considering the Inter-Pod Network topology.