You might have started with using NetScaler Console for management and monitoring only, and later you might want to use other features such as pooled licensing and analytics. For that, you must transition from the built-in agent to an external agent.
The built-in agent supports only management and monitoring features. For other NetScaler Console features such as pooled licensing and analytics, you need an external agent. This document covers the steps for transitioning from an existing NetScaler Console built-in agent to an external hypervisor-based agent.