Netmiko vs NAPALM vs Nornir: Which Should You Use?
Connection driver, abstraction layer, and execution framework — not rivals.
Netmiko, NAPALM, and Nornir get compared as competitors, but they sit at different layers. Understanding the stack tells you when to reach for each.
The comparison
- Netmiko — SSH connection handler. Sends commands, returns text. Great for screen-scraping any CLI device when you just need raw output.
- NAPALM — vendor abstraction. Returns structured, normalized data (getters) and supports config merge/replace with rollback. Best when you want vendor-neutral data and safe config ops.
- Nornir — execution framework. Inventory, concurrency, and task orchestration in pure Python. It runs Netmiko or NAPALM tasks across thousands of devices in parallel.
How they layer
Nornir orchestrates; NAPALM normalizes; Netmiko connects. A common production pattern: Nornir for inventory and concurrency, NAPALM for getters and config replace, Netmiko as the fallback driver for devices NAPALM doesn't cover.
from nornir import InitNornir from nornir_napalm.plugins.tasks import napalm_get nr = InitNornir(config_file="config.yaml") result = nr.run(task=napalm_get, getters=["bgp_neighbors"])
Choosing
One device, quick check → Netmiko. Vendor-neutral structured data or safe config replace → NAPALM. Fleet-wide parallel runs → Nornir wrapping the other two.
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