Network Automation high level - Ansible + Pytest

 
Configure topology using
Ansible + jinja 2 templting

Test using Pytest


ospf-lab/
├── ansible/
│   ├── inventory.yml
│   ├── playbook.yml
│   ├── group_vars/
│   │   └── all.yml
│   ├── host_vars/
│   │   ├── r1.yml
│   │   ├── r2.yml
│   │   └── r3.yml
│   └── templates/
│       └── ospf.j2
│
├── tests/
│   ├── conftest.py
│   └── test_ospf.py
│
└── requirements.txt

Cli paramiko, netmiko 

Netconf ncclient

Restconf request

Gnmi pygnmi

Yang pyang

Traffic gen

Spirent & ixia - control plane

TRex - only data (open source)

pytest -v, pytest -s , --log-cli-level=INFO

#import logging 

try to use module 

Parser

Scenario

Parser Used

NETCONF

XML (lxml, ncclient)

REST API

JSON

gNMI

JSON / Protobuf

Cisco CLI

Genie / pyATS

Multi-vendor CLI

TextFSM

Ansible

TextFSM

Legacy devices

Regex (last option)

For SP Role

“SP networks prioritize model-driven automation using NETCONF and gNMI, with CLI reserved for exceptional troubleshooting.”

For Enterprise Role

“Enterprise automation is hybrid—Ansible for config, Pytest for validation, and CLI parsing where APIs are unavailable.”