: Unlike VXLAN's fixed header, GENEVE uses a variable-length options header with a Type-Length-Value (TLV) format. This allows tunnel endpoints to exchange custom metadata, which is critical for systems like Open Virtual Network (OVN) .
: It utilizes a 24-bit Virtual Network Identifier (VNI) to isolate traffic, supporting up to 16 million unique virtual segments.
: Formally defined in RFC 8926 , it is the default tunnel protocol for modern cloud networking stacks like Open vSwitch (OVS) . Linux Implementation
The Linux kernel provides native support for GENEVE through the ip link command suite. Setting up GENEVE tunnel in Linux with TC | by Chen Dar