A customer wants to deploy a Layer 2 extension over a transport infrastructure for multiple data centers. The data center technology should support a localized Layer 3 gateway, a separate flooding dom

Pseudowire is a point-to-point Layer 2 circuit emulation technology that typically does not offer advanced features like localized L3 gateways or separate flooding domains across multiple data centers.

VXLAN EVPN (Virtual Extensible LAN Ethernet VPN) is a scalable DCI technology that supports Layer 2 extension with localized Layer 3 gateways (Anycast Gateway), separate flooding domains per VXLAN Network Identifier (VNI), and provides STP isolation through its BGP EVPN control plane.

E-Line is a point-to-point Ethernet service from a service provider and lacks the features for a localized Layer 3 gateway, separate flooding domains, and STP isolation across multiple data centers.

E-LAN is a multipoint-to-multipoint Ethernet service, but it typically extends a single Layer 2 domain across sites, which would not provide separate flooding domains or STP isolation per data center.