CHAPTER 1
Data models
Data modeling is standard based approach to model configuration and operational data in networking devices.
Using data models, customers can automate and simplify network wide visibility and configuration.
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Data Models - Programmatic and Standards-based Configuration , page 1
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YANG model, page 2
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Supported YANG models, page 4
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Introduction to NETCONF , page 4
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gRPC, page 7
Data Models - Programmatic and Standards-based Configuration
Cisco IOS XR software supports the automation of configuration of multiple routers across the network using
Data models. Configuring routers using data models overcomes drawbacks posed by traditional router
management techniques.
CLIs are widely used for configuring a router and for obtaining router statistics. Other actions on the router,
such as, switch-over, reload, process restart are also CLI-based. Although, CLIs are heavily used, they have
many restrictions.
Customer needs are fast evolving. Typically, a network center is a heterogenous mix of various devices at
multiple layers of the network. Bulk and automatic configurations need to be accomplished. CLI scraping is
not flexible and optimal. Re-writing scripts many times, even for small configuration changes is cumbersome.
Bulk configuration changes through CLIs are error-prone and may cause system issues. The solution lies in
using data models - a programmatic and standards-based way of writing configurations to any network device,
replacing the process of manual configuration. Data models are written in a standard, industry-defined language.
Although configurations using CLIs are easier (more human-friendly), automating the configuration using
data models results in scalability.
Cisco IOS XR supports the YANG data modeling language. YANG can be used with Network Configuration
Protocol (NETCONF) to provide the desired solution of automated and programmable network operations.
Data Models Configuration Guide for Cisco NCS 1001
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