Virtual Extensible LAN

Data Center Interconnection (DCI)

A method to connect different data centers seamlessly, treating them as a unified entity instead of individual centers.

Virtual Extensible LAN (VXLAN)

A technology designed to support up to 16 million virtual networks, allowing them to connect over a layer 3 network, making it routable.

VLAN (Virtual Local Area Network)

A network designed to span across multiple switches at layer 2 with a limitation of around 4,000 different virtual networks.

VXLAN Tunnel Endpoint (VTEP)

A network device that encapsulates and decapsulates the VXLAN packets to facilitate communication between virtual machines in different data centers.

VXLAN Network Identifier (VNI)

An identifier used to uniquely identify a VXLAN segment, allowing multiple virtual networks to be maintained within the same infrastructure.

Encapsulation in VXLAN

The process of wrapping an original frame with a VXLAN header within a UDP header and an IP header for transmission across networks.

Decapsulation in VXLAN

The process of removing the VXLAN header from the encapsulated frame upon reaching the destination, restoring the original ethernet frame.

IP addressing schemes

The specific arrangement and distribution of IP addresses used in different data centers, which may vary significantly.

Connectivity types in data centers

The various methods of connecting data centers, which can include fiber optics, metro ethernet, or copper-based connections.