EVPN (Ethernet Virtual Private Network) is a network technology that provides a flexible and efficient way to connect geographically dispersed sites within a data center or across wide area networks (WANs). EVPN uses the BGP (Border Gateway Protocol) control plane to enable the creation of virtual networks that support multi-tenancy, layer 2 and layer 3 connectivity, and seamless mobility of devices.
EVPN is particularly useful in modern data center environments and cloud networks where there is a need to efficiently connect and manage virtual machines, containers, and other resources across different sites. It supports features like MAC address learning, route distribution, and end-to-end Layer 2 and Layer 3 connectivity, allowing for secure and scalable communication.
One of the key advantages of EVPN is its ability to extend Layer 2 connectivity across data centers while maintaining Layer 3 routing integrity. This means that devices within different data centers can communicate as if they were on the same local network, without the limitations and complexities typically associated with traditional Layer 2 extension technologies. It also supports features like MAC mobility, where a device’s MAC address can be dynamically moved from one location to another without causing disruptions or requiring extensive reconfiguration. This makes it suitable for scenarios where devices need to move between different physical locations while maintaining connectivity.
So to sum up, it is a network technology that leverages BGP to provide efficient, scalable, and flexible connectivity between dispersed sites within data centers or across wide area networks. It is particularly well-suited for modern data center environments, cloud networks, and scenarios requiring seamless mobility and multi-tenancy support.