A Layer 2 VPN (L2VPN) establishes a virtual private network connection at the data link layer (Layer 2) of the OSI model. It allows Ethernet frames or other Layer 2 protocols to be transported across an IP network, effectively extending a local area network (LAN) over a wide area network (WAN). L2VPNs are commonly used to connect geographically separated sites as if they were on the same LAN, enabling seamless communication and resource sharing. Examples include Ethernet VPN (EVPN) and Virtual Private LAN Service (VPLS).
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