You can also bring up the port by using these commands:
+ The "shutdown" interface configuration command followed by the "no shutdown" interface configuration command restarts the disabled port.
+ The "errdisable recovery cause ..." global configuration command enables the timer to automatically recover error-disabled state, and the "errdisable recovery interval interval" global configuration command specifies the time to recover error-disabled state.

The traditional use of the pull model, where the client requests data from the network does not scale when what you want is near real-time data. Moreover, in some use cases, there is the need to be notified only when some data changes, like interfaces status, protocol neighbors change etc.
Model-Driven Telemetry is a new approach for network monitoring in which data is streamed from network devices continuously using a push model and provides near real-time access to operational statistics.
Applications can subscribe to specific data items they need, by using standard-based YANG data models over NETCONF-YANG. Cisco IOS XE streaming telemetry allows to push data off of the device to an external collector at a much higher frequency, more efficiently, as well as data on-change streaming.