data models is definitely helping with the network
automation efforts and the scale limitations.
Configuration changes made on a single device can be
replicated across an entire network. Device-by-device
configuration is illustrated in Figure 15-2.
Figure 15-2 Network Managed on a Device-by-
Device Basis
Using a controller for network management and device-
by-device configuration are not mutually exclusive. A
controller can be used to globally configure devices,
while direct connection to devices can be helpful for
monitoring and ensuring that the changes made by the
controller do not create undesired behavior.
Chapter 8, “Cisco Enterprise Networking Management
Platforms and APIs,” provides an example of a network
controller with Cisco DNA Center. Cisco DNA Center can
be used to completely configure, manage, and monitor
networks. It can also be used to deploy SD-Access