Question

What is an example of an overlay technology that might be featured in a Cisco SDN solution

Answer 1

An example of an overlay technology that might be featured in a Cisco Software-Defined Networking (SDN) solution is **Cisco Virtual Extensible LAN (VXLAN)**. VXLAN is used to encapsulate Layer 2 Ethernet frames within Layer 4 UDP packets, enabling the creation of virtualized Layer 2 networks over Layer 3 infrastructures. This technology is particularly valuable in multi-tenant environments or large data centers, as it allows for scalable and flexible network segmentation, enhancing workload mobility and improving resource utilization across virtualized networks. VXLAN facilitates the interconnection of virtual machines over geographically distributed data centers while maintaining their communication as if they were on the same local network.