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Cisco ISE is a network admission control and access layer infrastructure, where people are connecting to network, and we assume they are trusted. Cisco ISE has improved the policy engine which handles the access layer infrastructure.

Cisco ISE works hand in hand with your network infrastructure and could be implemented as either Radius or Tacacs+ server. In order to authenticate different devices, 802.1x standard is used so the end points could talk to the switches using various protocols like EAP through the switches that deliver authentication information to Cisco Identity Services Engine.

Todays, software-defined networking (SDN) becomes more popular and meanwhile Cisco ACI changes the way we’ve traditionally thought about networking. In Traditional networking administrators use commands and to manage different devices locally. Cisco Application Centric Infrastructure (ACI) is a holistic architecture in the data center providing centralized automation and policy-driven application profiles. This solution delivers software flexibility with the scalability of hardware performance

Cisco Prime Infrastructure provides network monitoring which comprise a broad range of activities. Monitoring the network infrastructure our devices and In fact monitoring the network involves every aspect of ensuring that the network infrastructure is operating efficiently and is expected.their components  running