An ISP is evaluating options to provide IP mobility between two hosting centers located in two different cities approximately 100 km apart. The ISP wants to facilitate Layer 2 host migration between t

vPC (Virtual Port Channel) is a Cisco-specific technology for active-active EtherChannel within a single data center and is not designed for interconnecting geographically separated sites.

LISP (Locator/ID Separation Protocol) focuses primarily on IP mobility by decoupling endpoint identities from their routing locations but does not inherently provide scalable Layer 2 extension for host migration across sites and multi-tenancy as comprehensively as VXLAN EVPN.

OTV (Overlay Transport Virtualization) is a Cisco proprietary DCI technology for Layer 2 extension over Layer 3. While functional, VXLAN EVPN offers a more modern, standards-based, and highly scalable solution with an integrated Layer 2 and Layer 3 VPN control plane, making it generally preferred for large, multi-customer DCI deployments with IP mobility requirements.

VXLAN EVPN (Ethernet VPN) is a highly scalable and standards-based technology that encapsulates Layer 2 Ethernet frames within UDP packets to traverse a Layer 3 IP network, providing Layer 2 extension across data centers. EVPN leverages BGP as a control plane for efficient MAC and IP address advertisement, enabling seamless host mobility, robust multi-tenancy, and integrated Layer 3 routing between VXLAN segments, making it ideal for large-scale DCI with 500 customers and 100 VLANs each.