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Virtual Extensible LAN
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Data Link Layer — Security & VPN
Protocol Overview
Full Name
Virtual Extensible LAN
Abbreviation
VXLAN
OSI Layer
Data Link Layer
Category
Security & VPN
Default Port
4789
RFC
RFC 7348
About VXLAN
Network virtualization overlay encapsulating Layer 2 frames within UDP. Extends VLANs across Layer 3 boundaries, supporting up to 16 million logical networks for large cloud deployments.
Data Link Layer
Security & VPN
Port 4789
Standards Reference
VXLAN is defined in RFC 7348, published by the Internet Engineering Task Force (IETF). RFCs are the official standards documents for internet protocols and are freely available for public review.