Cisco Identity Services Engine is available as an appliance or software that can run on VMware and each instance is called a node. Cisco ISE is made up of the following deployment nodes :
Policy Administration Node. This node enables admins to log into and configure policies and system-related configurations. Once configured, changes are pushed out to policy services nodes.
Monitoring Node. This node collects logs and generates reports. Events that happen within the ISE topology are logged to this node.
Policy Service Node. This node provides network access, provisioning, profiling, posture and guest access services.
pxGrid Node. This node exchanges context-based sensitive data from the Cisco ISE session directory with other ISE network systems and Cisco products. The pxGrid node enables ISE to transfer data to other software.
