From the course: Cisco CCNA (200-301) Cert Prep: 3 Security, Automation, and Programmability

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DNS Center and SDA

DNS Center and SDA

- Cisco DNA Center is purchased preinstalled on a hardware appliance, and is the heart of Cisco's SDA product. The Northbound interface has a comprehensive GUI for administrators, as well as a REST API, which will be discussed in a following chapter. The Southbound interface supports legacy devices with Telnet, SSH, and SNMP, while also supporting newer systems via NETCONF and RESTCONF. SDA's intent-based network is most clearly demonstrated with ACLs. As a network grows, so can an ACL based on what it's filtering requirements may be at the time. Generally, as these lists grow, new entries are simply appended to the end and old, forgotten entries sit at the top. Troubleshooting these lists, or attempting to clean them can be problematic as they get bigger, and their original purpose becomes more obtuse. Using DNA Center, an engineer can create policies for various types of traffic, not even knowing the underlying IP addressing being used. The purpose of each policy can be clearly…

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