What is a key feature of YANG?
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YANG (Yet Another Next Generation) is a modeling language used to define data models that are used to configure, monitor, and manage network devices. YANG was developed by the IETF (Internet Engineering Task Force) to provide a standardized way of modeling data and configuration information for network devices.
One of the key features of YANG is its support for reusable types and groupings. YANG allows developers to define custom data types and groupings that can be reused across different data models. This can greatly simplify the process of creating data models and make them more modular and reusable.
For example, suppose you are creating a data model for a network router that includes a number of different interfaces. Each interface may have a number of different configuration parameters, such as IP address, subnet mask, and MTU (Maximum Transmission Unit). Instead of defining these configuration parameters separately for each interface, you can define a grouping that includes all of the common parameters and reuse that grouping for each interface. This can greatly simplify the data model and make it easier to maintain and update over time.
In summary, one of the key features of YANG is its support for reusable types and groupings. This can greatly simplify the process of creating data models and make them more modular and reusable, which is important in network automation and management.