DNA Centre is the primary control centre of SDA. GUI is the traditional means of accessing DNA Centre but it can also be accessed using REST API. This is based on HTTP/S and supports the same verbs - GET, POST etc. The body of the REST API call will be JSON or XML formatted. REST … Continue reading SDA – Network Programmability

Unicast - communicate with a specfic device. Broadcast - communicate with all devices whether they want to or not. Multicast - communicate with many devices but only those who are interested. L2 Anycast - "I don't care" - several devices may be able to respond to communication but I will enter a unicast conversation with … Continue reading SDA – Anycast Gateways

Encrypted traffic is a problem for analytics, firewall inspection and other security measures that need to look inside the packet to see if there is malicious intent. The workaround in traditional networks is to use a proxy to act as a man in the middle decrypting, inspecting and then re-encrypting which allows firewall inspection while … Continue reading SDA Services – Encrypted Traffic Analytics (ETA)

Heart of Cisco Security is ISE. How do you identify the user when they log into the network? Traditionally this is a username and password combination but can easily be undermined by someone having knowledge of those credentials via theft. Other factors can be used to determine whether a login is legitimate - for example, … Continue reading SDA Services – Network Security

Network Data Platform - Analytics Engine and Assurance Engine. Analytics is the action of taking data and storing it in a format that can be exploited by the Assurance Engine to get value from the information. The Analytics Engine collects data from a variety of sources such as SNMP, Syslog, Netflow and Streaming Telemetry. Data … Continue reading SDA Access – Network Analytics