Cisco® CCNA Exam Cram Notes : Controllers (Cisco DNA Center and WLC)

I. Networking Fundamentals

1. Explain role and function of network components

1.7 Controllers (Cisco DNA Center and WLC)

Cisco DNA Center is the network management and command center for Cisco DNA. With this platform, IT can respond to changes and challenges faster and more intelligently. The Cisco DNA Center is a complete network management platform with integrated tools for network management, automation, virtualization, analytics and assurance, security, and Internet of Things connectivity. The DNA Center dashboard provides an intuitive and simple overview of network health and clear drill-down menus for quickly identifying and remediating issues.

Some important points on Cisco DNA center

  • Cisco DNA Center is all about Automation

  • Cisco DNA Center is based on something called Intent-Based Networking

  • It is open and inclusive.

  • The Cisco DNA Center dashboard provides 360-degree visibility

  • We can vastly reduce deployment and provisioning times with Cisco DNA Center.

  • Cisco DNA Center takes the guesswork out of network performance capabilities

  • Cisco DNA Center detects and mitigates threats in real time.

  • Lower costs

WLC(Wireless LAN Controller): Wireless networks have become a necessity today. Many corporate environments require deployment of wireless networks on a large scale. Cisco has come up with the concept of the Cisco Unified Wireless Network (CUWN) solution, which helps make it easier to manage such large scale deployments. WLC is a device that assumes a central role in the CUWN. Traditional roles of access points, such as association or authentication of wireless clients, are done by the WLC. Access points, called Lightweight Access Points (LAPs) in the unified environment, register themselves with a WLC and tunnel all the management and data packets to the WLCs, which then switch the packets between wireless clients and the wired portion of the network. All the configurations are done on the WLC. LAPs download the entire configuration from WLCs and act as a wireless interface to the clients.

A wireless LAN (or WLAN) controller is used in combination with the Lightweight Access Point Protocol (LWAPP) to manage light-weight access points in large quantities by the network administrator or network operations center. The wireless LAN controller is part of the Data Plane within the Cisco Wireless Model.

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