Which feature of Aruba CX switches enables faster configuration rollbacks and stateful recovery?

The Checkpoint and Rollback feature in ArubaOS-CX is specifically designed for configuration management. It allows an administrator to save a snapshot of the current running configuration, known as a "checkpoint," before implementing changes. If the new configuration causes issues, the administrator can quickly revert the switch's running configuration to the previously saved checkpoint. This provides a fast and reliable method for configuration rollbacks and stateful recovery to a known-good operational state.

A. Virtual Switching Extension (VSX) is a high-availability and redundancy feature that virtualizes two separate switches into a single logical device, preventing downtime during failures or upgrades.
B. Network Analytics Engine (NAE) is a built-in framework for network monitoring and troubleshooting. It uses scripts to analyze events and can automate actions but is not a configuration versioning tool.
D. Multi-Chassis Link Aggregation (MC-LAG) is a general high-availability concept. Aruba's implementation is VSX, which provides link and chassis redundancy, not configuration rollback capabilities.

1. ArubaOS-CX 10.12 Fundamentals Guide, "Configuration management" chapter, "Checkpoints" section. It states, "The checkpoint feature allows you to save a snapshot of the running configuration. You can then roll back the running configuration to a previously saved checkpoint."

2. ArubaOS-CX 10.12 Virtual Switching Extension (VSX) Guide, "Introduction to VSX" chapter. This document describes VSX as a high-availability technology that provides redundancy for the connected devices.

3. ArubaOS-CX 10.12 Network Analytics Engine Guide, "Introduction to the Network Analytics Engine" chapter. This guide defines NAE as a tool that "provides the ability to monitor and troubleshoot the network by analyzing the events that are occurring on the switch."