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Network Automation: NETCONF, YANG & Ansible

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From screen-scraping to structured APIs

Traditional network automation scraped CLI output with regex — fragile, vendor-specific, and hard to scale. Modern automation uses structured interfaces: NETCONF/YANG for configuration management and gNMI for telemetry streaming.

The shift: instead of sending interface GigabitEthernet0/0 commands, you send structured XML/JSON describing the desired state, and the device validates it against a YANG schema before applying.

Packets in motion — click to inspect:

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