NAPALM vs ONOS

NAPALM is a free Python library for automating network devices from multiple vendors through a shared API. It connects to devices, changes configurations, and retrieves operational data. Its core drivers cover Arista EOS, Cisco IOS, Cisco IOS-XR, Cisco NX-OS, and Juniper JunOS, with additional community drivers. Configuration methods include replace, merge, compare, commit-confirm, and rollback, although availability depends on the platform. Getters can return device facts, configurations, interface information, BGP neighbors, and environment data, with coverage varying by driver. For validation, NAPALM can compare live device state against YAML expectations and create a compliance report. The project identifies integrations with Ansible, SaltStack, and StackStorm. Installation uses `pip install napalm`, which includes the currently available core drivers. Version 5.1.0 and later supports Python 3.9 and later. It is self-hosted, licensed under Apache-2.0, and free at free. Documentation advises checking platform-specific caveats before use.

ONOS is an open-source software-defined networking platform that provides a control plane for managing network components and running communication-service modules. Its µONOS architecture supports device configuration, monitoring and maintenance, forwarding-plane programming, topology validation, and fine-grained performance metrics. A symmetric cluster of identical instances distributes work across servers and is designed to handle instance failures; the architecture is described as highly available and dynamically scalable. Control and configuration interfaces include P4/P4Runtime, gNMI/OpenConfig, and gNOI, with gRPC connecting modular microservices. OpenFlow is the primary southbound protocol, and OVSDB, NETCONF, and SNMP are also named for device configuration. The microservices are designed for cloud and data center infrastructure using Kubernetes, with Docker images and Helm charts listed as deployment tools. A cloud-native web GUI uses Angular and gRPC Web to access backend modules. ONOS is free and published under the Apache License 2.0. It is aimed mainly at service-provider networks, with data-center and campus networks also identified as possible uses. Production downloads are recommended as a release tar.gz package or Docker image; the listed LTS release is X-Wing 2.7.0, dated July 16, 2021.