What is true about VSX?

VSX, or Virtual Switching eXtension, is a technology that allows for the creation of a virtual switch across multiple physical switch devices. A crucial aspect of VSX is that it keeps the control planes of the switch members separate. This separation is significant because it provides enhanced reliability and availability; if one switch experiences issues, the other one can continue to operate independently and maintain network stability.

This architecture enables faster failover and redundancy, as each switch processes control traffic on its own control plane, thus ensuring that the switches are not dependent on a single control point. This independence is part of what allows VSX to deliver high availability characteristics essential for modern network environments, especially in scenarios where uptime is critical.

The other options involve characteristics or limitations of VSX that do not align with its operational principles. For example, VSX is not limited to small branch deployments nor is it restricted to specific models like the 6300F. Additionally, while VSX does have certain configurations for static port switches, the concept of needing VSX-plus for stacking is not applicable to all scenarios, indicating different implementations based on the specific hardware and software version. These distinctions highlight the robustness of VSX in providing flexibility and high availability in various deployment scenarios.