Cisco Nexus (NX-OS)

Device type

Netmiko device_type: cisco_nxos

Set vendor: nexus in devices.csv.

Command files

Nexus devices share the config/cisco/ command files and validation patterns — no separate folder needed. Commands that only exist on one platform are safe to mix in the same file: a command invalid on the connected platform returns % Invalid input and is handled gracefully by read-only tasks.

The built-in health check (--healthcheck) already includes NX-OS commands:

show system resources
show vpc brief

Health check coverage

Metric	Source
CPU %	show system resources — computed as 100 - idle
Memory %	show system resources — used / total
Virtual chassis	show vpc brief — peer status + keep-alive status

A vPC peer that is not ok or a keep-alive that is not alive reports the device as DEGRADED → CRIT in the health report.

Differences from IOS

• No enable secret needed in most deployments — NX-OS users land at privileged exec.
• Config save is copy running-config startup-config (not write memory).
• Stack detection (show switch) does not apply; Nexus pairing is vPC, covered above.