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Introduction xxx
Chapter 1 Foundations of NetDevOps 1 Traditional Network Operations 2 Software Development Methodologies 11 NetDevOps 14 Comparing Network Automation Tools 21 The Modern Network Engineer Toolkit 22 CI/CD 32 Summary 35 References 36
Chapter 2 Installing and Upgrading pyATS 37 Installing pyATS 37 Upgrading pyATS 42 Troubleshooting pyATS 45 Summary 47
Chapter 3 Testbeds 49 What Is YAML? 49 What Is a Testbed? 51 Device Connection Abstractions 60 Testbed Validation 63 Dynamic Testbeds 66 Intent-based Networking with Extended Testbeds 68 Summary 70
Chapter 4 AEtest Test Infrastructure 73 Getting Started with AEtest 74 Testscript Structure 75 AEtest Object Model 82 Runtime Behavior 85 Test Results 88 Processors 91 Data-Driven Testing 94 Running Testscripts 108 Testscript Flow Control 117 Reporting 126 Debugging 133 Summary 134
Chapter 5 pyATS Parsers 137 Vendor-Agnostic Automation 138 pyATS learn 139 pyATS Parsers 146 Parsing at the CLI 148 Parsing with Python 159 Dictionary Query 160 Differentials 162 Summary 167
Chapter 6 Test-Driven Development 169 Introduction to Test-Driven Development 170 Applying Test-Driven Development to Network Automation 172 Introduction to pyATS 174 The pyATS Framework 175 Summary 187 Endnotes 188
Chapter 7 Automated Network Documentation 189 Introduction to pyATS Jobs 190 Running pyATS Jobs from the CLI 196 pyATS Job CLI Logs 199 pyATS Logs HTML Viewer 203 Jinja2 Templating 205 Business-Ready Documents 206 Summary 232 References 232
Chapter 8 Automated Network Testing 233 An Approach to Network Testing 234 Software Version Testing 235 Interface Testing 243 Neighbor Testing 259 Reachability Testing 262 Intent Validation Testing 267 Feature Testing 271 Summary 276
Chapter 9 pyATS Triggers and Verifications 279 Genie Objects 279 Genie Harness 282 Verifications 286 Triggers 290 Trigger and Verification Example 296 Summary 301
Chapter 10 Automated Configuration Management 303 Intent-Based Network Configuration 303 Generating Configurations with pyATS 304 Configuring Devices with pyATS 309 Summary 320
Chapter 11 Network Snapshots 321 Network Profiling 321 Comparing Network State 324 Polling Expected State 332 Robot Framework with Genie 333 Summary 335 References 335
Chapter 12 Recordings, Playbacks, and Mock Devices 337 Recording pyATS jobs 337 Playback Recordings 341 Mock Devices 342 Mock Device CLI 344 Summary 345
Chapter 13 Working with Application Programming Interfaces (API) 347 pyATS APIs 347 REST Connector 353 YANG Connector 385 gNMI 389 Summary 395
Chapter 14 Parallel Call (pcall) 397 Scaling Performance 397 Parallel Call (pcall) 400 Performance Comparison 406 Summary 409
Chapter 15 pyATS Clean 411 Getting Started 411 Clean YAML 423 Clean Execution 436 Developing Clean Stages 443 Summary 456
Chapter 16 pyATS Blitz 459 Blitz YAML 459 Blitz Usage 481 Blitz Development 481 Custom Blitz Actions 481 Custom Blitz Sections 482 Useful Tips 483 Summary 484
Chapter 17 Chatbots with Webex 485 Integrating pyATS with Webex 486 pyATS Job Integration 487 pyATS Health Check Integration 489 Adaptive Cards 490 Customized Job Notifications 492 Summary 502
Chapter 18 Running pyATS as a Container 503 Introduction to Containers 504 pyATS Official Docker Container 506 pyATS Image Builder 507 Building a pyATS Image from Scratch 510 Summary 513
Chapter 19 pyATS Health Check 515 Health Checks 515 Custom Health Checks 517 Health Check Usage 523 Summary 525
Chapter 20 XPRESSO 527 Installing XPRESSO 529 Getting Started with XPRESSO 536 Transforming a pyATS Job into XPRESSO 538 Summary 556
Chapter 21 CI/CD with pyATS 557 What Is CI/CD? 557 CI/CD In NetDevOps 560 NetDevOps Scenario 562 NetDevOps in Action 565 What''s Next? 572 Summary 573
Chapter 22 Robot Framework 575 What Is the Robot Framework? 575 Getting Started with Robot Framework 576 Robot Integration with pyATS 582 Summary 590
Chapter 23 Leveraging Artificial Intelligence in pyATS 591 OpenAI API 597 Retrieval Augmented Generation with LangChain 612 Rapid Prototyping with Streamlit 621 Summary 631 Appendix A Writing Your Own Parser 633 Appendix B Secret Strings 651 9780138031671, TOC, 6/5/2024