napalm vs netmiko: What are the differences?

Introduction

NAPALM and Netmiko are both Python libraries commonly used for network automation tasks. While they serve similar purposes, there are key differences between the two that set them apart in terms of functionality and features.

1. Connection Methods: NAPALM abstracts the connection methods to network devices by providing a single consistent interface, while Netmiko directly utilizes the SSH protocol for device connection management.

2. Vendor Support: NAPALM supports a wide range of networking vendors including Cisco, Juniper, Arista, and more, making it a versatile choice for multi-vendor environments. Netmiko is primarily focused on Cisco devices, although it can be extended to support other vendors through custom modifications.

3. Configuration management: NAPALM allows for easier configuration management through its unified and consistent API, making it simpler to work with configurations across different vendor devices. In contrast, Netmiko requires more manual coding for configuration tasks due to its less abstracted nature.

4. Validation and normalization: NAPALM provides built-in mechanisms for data validation and normalization, ensuring consistency and correctness in the data retrieved from network devices. Netmiko relies more on user input for validation and normalization, which can lead to inconsistencies in data handling.

5. Error Handling: NAPALM includes robust error handling mechanisms that help in identifying and resolving issues efficiently during network automation tasks. Netmiko, while also having error handling capabilities, may require more manual intervention in error resolution due to its lower level of abstraction.

6. Active Development: NAPALM has an active development community that regularly updates the library with new features and improvements, ensuring its relevance in the ever-evolving network automation landscape. Netmiko, while stable and widely used, may not receive updates and enhancements as frequently as NAPALM.

In Summary, NAPALM and Netmiko differ in connection methods, vendor support, configuration management, validation and normalization, error handling, and active development, making them distinct choices for network automation tasks based on specific requirements and preferences.