The VxLAN Network Identifier (VNI) can scale to how many network segments?

The VxLAN Network Identifier (VNI) supports a total of 16 million unique identifiers. This is due to the 24-bit length of the VNI, which allows for a maximum of 2^24 distinct values. When considering network segmentation, this high number enables the creation of a vast number of virtual networks, making VxLAN highly scalable and suitable for large multi-tenant data center environments or cloud infrastructures.

With this scalability, organizations can effectively isolate and manage different workloads and applications across various departments or customers, providing flexibility and enhancing security. The ability to support such a large number of segments is one of the key advantages of VxLAN over older technologies, which had much lower limits, making it particularly well-suited for modern networking challenges.