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Network Calculator
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../cli/tcpdump/" class="md-nav__link">
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<span class="md-ellipsis">
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Network Monitoring
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../cli/quick/" class="md-nav__link">
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<span class="md-ellipsis">
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Quickstart Guide
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../cli/text-editor/" class="md-nav__link">
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<span class="md-ellipsis">
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Text Editor
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../cli/upgrade/" class="md-nav__link">
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<span class="md-ellipsis">
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Upgrading
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</span>
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</a>
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</li>
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</ul>
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</nav>
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</li>
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<li class="md-nav__item">
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<a href="../container/" class="md-nav__link">
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<span class="md-ellipsis">
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Docker Containers
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</span>
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</a>
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</li>
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<li class="md-nav__item md-nav__item--nested">
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<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_4" >
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<label class="md-nav__link" for="__nav_4" id="__nav_4_label" tabindex="0">
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<span class="md-ellipsis">
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Networking
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</span>
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<span class="md-nav__icon md-icon"></span>
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</label>
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<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_4_label" aria-expanded="false">
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<label class="md-nav__title" for="__nav_4">
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<span class="md-nav__icon md-icon"></span>
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Networking
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</label>
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<ul class="md-nav__list" data-md-scrollfix>
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<li class="md-nav__item">
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<a href="../networking/" class="md-nav__link">
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<span class="md-ellipsis">
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Network Configuration
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../qos/" class="md-nav__link">
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<span class="md-ellipsis">
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Quality of Service
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../eth-counters/" class="md-nav__link">
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<span class="md-ellipsis">
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RMON Counters
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../tunnels/" class="md-nav__link">
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<span class="md-ellipsis">
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Tunneling (L2/L3)
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../wifi/" class="md-nav__link">
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<span class="md-ellipsis">
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Wireless LAN (WiFi)
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</span>
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</a>
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</li>
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</ul>
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</nav>
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</li>
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<li class="md-nav__item md-nav__item--nested">
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<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_5" >
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<label class="md-nav__link" for="__nav_5" id="__nav_5_label" tabindex="0">
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<span class="md-ellipsis">
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Services
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</span>
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<span class="md-nav__icon md-icon"></span>
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</label>
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<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_5_label" aria-expanded="false">
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<label class="md-nav__title" for="__nav_5">
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<span class="md-nav__icon md-icon"></span>
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Services
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</label>
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<ul class="md-nav__list" data-md-scrollfix>
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<li class="md-nav__item">
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<a href="../discovery/" class="md-nav__link">
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<span class="md-ellipsis">
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Device Discovery
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../dhcp/" class="md-nav__link">
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<span class="md-ellipsis">
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DHCP Server
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</span>
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</a>
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</li>
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</ul>
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</nav>
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</li>
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<li class="md-nav__item md-nav__item--nested">
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<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_6" >
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<label class="md-nav__link" for="__nav_6" id="__nav_6_label" tabindex="0">
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<span class="md-ellipsis">
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System
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</span>
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<span class="md-nav__icon md-icon"></span>
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</label>
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<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_6_label" aria-expanded="false">
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<label class="md-nav__title" for="__nav_6">
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<span class="md-nav__icon md-icon"></span>
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System
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</label>
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<ul class="md-nav__list" data-md-scrollfix>
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<li class="md-nav__item">
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<a href="../boot/" class="md-nav__link">
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<span class="md-ellipsis">
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Boot Procedure
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../system/" class="md-nav__link">
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<span class="md-ellipsis">
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Configuration
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../hardware/" class="md-nav__link">
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<span class="md-ellipsis">
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Hardware Info & Status
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../management/" class="md-nav__link">
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<span class="md-ellipsis">
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Management
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../syslog/" class="md-nav__link">
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<span class="md-ellipsis">
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Syslog Support
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../upgrade/" class="md-nav__link">
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<span class="md-ellipsis">
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Upgrade
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</span>
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</a>
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</li>
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</ul>
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</nav>
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</li>
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<li class="md-nav__item md-nav__item--nested">
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<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_7" >
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<label class="md-nav__link" for="__nav_7" id="__nav_7_label" tabindex="0">
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<span class="md-ellipsis">
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Scripting
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</span>
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<span class="md-nav__icon md-icon"></span>
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</label>
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<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_7_label" aria-expanded="false">
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<label class="md-nav__title" for="__nav_7">
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<span class="md-nav__icon md-icon"></span>
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Scripting
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</label>
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<ul class="md-nav__list" data-md-scrollfix>
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<li class="md-nav__item">
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<a href="../scripting/" class="md-nav__link">
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<span class="md-ellipsis">
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Introduction
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../scripting-sysrepocfg/" class="md-nav__link">
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<span class="md-ellipsis">
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Legacy Scripting
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../scripting-prod/" class="md-nav__link">
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<span class="md-ellipsis">
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Production Testing
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</span>
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</a>
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</li>
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<li class="md-nav__item">
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<a href="../scripting-restconf/" class="md-nav__link">
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<span class="md-ellipsis">
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Remote RESTCONF
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</span>
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</a>
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</li>
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</ul>
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</nav>
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</li>
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<li class="md-nav__item md-nav__item--active md-nav__item--nested">
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<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8" checked>
|
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<label class="md-nav__link" for="__nav_8" id="__nav_8_label" tabindex="0">
|
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<span class="md-ellipsis">
|
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Developer's Corner
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</span>
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<span class="md-nav__icon md-icon"></span>
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</label>
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<h1 id="regression-testing-with-infamy">Regression Testing with Infamy<a class="headerlink" href="#regression-testing-with-infamy" title="Permanent link">¶</a></h1>
|
|
<p>Infix comes with a test suite that is intended to provide end-to-end
|
|
verification of supported features. Generally speaking, this means that
|
|
one or more DUTs are configured over NETCONF or RESTCONF; the resulting
|
|
network is then black-box tested by injecting and inspecting network
|
|
traffic at various points.</p>
|
|
<p>This document is intended to be a practical guide on how to run, develop
|
|
and debug tests. There is a separate document describing the <a href="../test-arch/">Test
|
|
System Architecture</a>.</p>
|
|
<h2 id="modes-of-testing">Modes of Testing<a class="headerlink" href="#modes-of-testing" title="Permanent link">¶</a></h2>
|
|
<h3 id="virtual-devices">Virtual Devices<a class="headerlink" href="#virtual-devices" title="Permanent link">¶</a></h3>
|
|
<p>By default, tests are run on a topology made up of virtual Infix nodes
|
|
using <a href="https://github.com/wkz/qeneth">Qeneth</a>. To run the full regression test suite: build Infix
|
|
for <code>x86_64</code>:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a>$ make x86_64_defconfig
|
|
<a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a>...
|
|
<a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a>$ make
|
|
<a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a>...
|
|
<a id="__codelineno-0-5" name="__codelineno-0-5" href="#__codelineno-0-5"></a>$ make test
|
|
<a id="__codelineno-0-6" name="__codelineno-0-6" href="#__codelineno-0-6"></a>...
|
|
</code></pre></div>
|
|
<h3 id="physical-devices">Physical Devices<a class="headerlink" href="#physical-devices" title="Permanent link">¶</a></h3>
|
|
<p>To run the tests on a preexisting topology from the host's network
|
|
namespace, specify the <code>host</code> <code>TEST_MODE</code>:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a>$ make TEST_MODE=host test
|
|
<a id="__codelineno-1-2" name="__codelineno-1-2" href="#__codelineno-1-2"></a>...
|
|
</code></pre></div>
|
|
<p>This typically used when testing on physical hardware. By default the
|
|
topology will be sourced from <code>/etc/infamy.dot</code>, but this can be
|
|
overwritten by setting the <code>TOPOLOGY</code> variable:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a>$ make TEST_MODE=host TOPOLOGY=~/my-topology.dot test
|
|
<a id="__codelineno-2-2" name="__codelineno-2-2" href="#__codelineno-2-2"></a>...
|
|
</code></pre></div>
|
|
<h3 id="make-run-devices"><code>make run</code> Devices<a class="headerlink" href="#make-run-devices" title="Permanent link">¶</a></h3>
|
|
<p>Some tests only require a single DUT. These can therefore be run
|
|
against an Infix image started from <code>make run</code>. This requires that the
|
|
instance is configured to use TAP networking.</p>
|
|
<p>When the instance is running, you can open a separate terminal and run
|
|
the subset of the test suite that can be mapped to it:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a>$ make TEST_MODE=run test
|
|
<a id="__codelineno-3-2" name="__codelineno-3-2" href="#__codelineno-3-2"></a>...
|
|
</code></pre></div>
|
|
<h2 id="interactive-usage">Interactive Usage<a class="headerlink" href="#interactive-usage" title="Permanent link">¶</a></h2>
|
|
<p>When developing and debugging tests, the overhead of repeatedly
|
|
setting up and tearing down the test environment can quickly start to
|
|
weigh you down. In these situation, you can start an interactive test
|
|
environment:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-4-1" name="__codelineno-4-1" href="#__codelineno-4-1"></a>$ make test-sh
|
|
<a id="__codelineno-4-2" name="__codelineno-4-2" href="#__codelineno-4-2"></a>Info: Generating topology
|
|
<a id="__codelineno-4-3" name="__codelineno-4-3" href="#__codelineno-4-3"></a>Info: Generating node YAML
|
|
<a id="__codelineno-4-4" name="__codelineno-4-4" href="#__codelineno-4-4"></a>Info: Generating executables
|
|
<a id="__codelineno-4-5" name="__codelineno-4-5" href="#__codelineno-4-5"></a>Info: Launching dut1
|
|
<a id="__codelineno-4-6" name="__codelineno-4-6" href="#__codelineno-4-6"></a>Info: Launching dut2
|
|
<a id="__codelineno-4-7" name="__codelineno-4-7" href="#__codelineno-4-7"></a>Info: Launching dut3
|
|
<a id="__codelineno-4-8" name="__codelineno-4-8" href="#__codelineno-4-8"></a>Info: Launching dut4
|
|
<a id="__codelineno-4-9" name="__codelineno-4-9" href="#__codelineno-4-9"></a>11:42:52 infamy0:test #
|
|
</code></pre></div>
|
|
<p>The example above uses the default mode (<code>qeneth</code>), but the <code>host</code> and
|
|
<code>run</code> modes also support the <code>test-sh</code> target.</p>
|
|
<p>It takes a little while to start up, but then we have a shell prompt
|
|
inside the container running Infamy. It's a very limited environment,
|
|
but it has enough to easily run single tests, connect to the virtual
|
|
devices, and <em>step</em> your code.</p>
|
|
<h3 id="running-subsets-of-tests">Running Subsets of Tests<a class="headerlink" href="#running-subsets-of-tests" title="Permanent link">¶</a></h3>
|
|
<p>Each test case is a separate executable, which can be run without
|
|
arguments:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-5-1" name="__codelineno-5-1" href="#__codelineno-5-1"></a>11:42:53 infamy0:test # ./case/infix_dhcp/dhcp_basic.py
|
|
</code></pre></div>
|
|
<p>To run a suite of tests, e.g., only the DHCP client tests, pass the
|
|
suite as an argument to <a href="https://github.com/rical/9pm">9PM</a>:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-6-1" name="__codelineno-6-1" href="#__codelineno-6-1"></a>11:42:53 infamy0:test # ./9pm/9pm.py case/infix_dhcp/infix_dhcp.yaml
|
|
</code></pre></div>
|
|
<p>To run the suite of all tests:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-7-1" name="__codelineno-7-1" href="#__codelineno-7-1"></a>11:42:53 infamy0:test # ./9pm/9pm.py case/all.yaml
|
|
</code></pre></div>
|
|
<h3 id="connecting-to-infamy">Connecting to Infamy<a class="headerlink" href="#connecting-to-infamy" title="Permanent link">¶</a></h3>
|
|
<p>The test system runs in a Docker container, so to get a shell prompt in
|
|
<em>another terminal</em> you need to connect to that container. Infamy comes
|
|
with a helper script for this:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-8-1" name="__codelineno-8-1" href="#__codelineno-8-1"></a>$ ./test/shell
|
|
<a id="__codelineno-8-2" name="__codelineno-8-2" href="#__codelineno-8-2"></a>11:42:53 infamy0:test #
|
|
</code></pre></div>
|
|
<p>By default it connect to the latest started Infamy instance. If you for
|
|
some reason run multiple instances of Infamy the <code>shell</code> script takes an
|
|
optional argument "system", which is the hostname of the container you
|
|
want to connect to:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-9-1" name="__codelineno-9-1" href="#__codelineno-9-1"></a>$ ./test/shell infamy2
|
|
<a id="__codelineno-9-2" name="__codelineno-9-2" href="#__codelineno-9-2"></a>11:42:53 infamy2:test #
|
|
</code></pre></div>
|
|
<h3 id="connecting-to-a-dut">Connecting to a DUT<a class="headerlink" href="#connecting-to-a-dut" title="Permanent link">¶</a></h3>
|
|
<div class="admonition tip">
|
|
<p class="admonition-title">Tip</p>
|
|
<p>The <code>console</code> script uses <code>telnet</code> to connect to a port forwarded to
|
|
<code>localhost</code> by the Docker container. To exit Telnet, use Ctrl-] and
|
|
then 'q' followed by enter. This can be customized in <code>~/.telnetrc</code></p>
|
|
</div>
|
|
<p>All DUTs in a virtual Infamy topology are emulated in Qemu instances
|
|
managed by qeneth. If you want to watch what's happening on one of the
|
|
target systems, e.g., tail a log file or run <code>tcpdump</code> during the test,
|
|
there is another helper script in Infamy for this:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-10-1" name="__codelineno-10-1" href="#__codelineno-10-1"></a>$ ./test/console 1
|
|
<a id="__codelineno-10-2" name="__codelineno-10-2" href="#__codelineno-10-2"></a>Trying 127.0.0.1...
|
|
<a id="__codelineno-10-3" name="__codelineno-10-3" href="#__codelineno-10-3"></a>Connected to 127.0.0.1.
|
|
<a id="__codelineno-10-4" name="__codelineno-10-4" href="#__codelineno-10-4"></a>
|
|
<a id="__codelineno-10-5" name="__codelineno-10-5" href="#__codelineno-10-5"></a>Infix OS — Immutable.Friendly.Secure v23.11.0-226-g0c144da (console)
|
|
<a id="__codelineno-10-6" name="__codelineno-10-6" href="#__codelineno-10-6"></a>infix-00-00-00 login: admin
|
|
<a id="__codelineno-10-7" name="__codelineno-10-7" href="#__codelineno-10-7"></a>Password:
|
|
<a id="__codelineno-10-8" name="__codelineno-10-8" href="#__codelineno-10-8"></a>.-------.
|
|
<a id="__codelineno-10-9" name="__codelineno-10-9" href="#__codelineno-10-9"></a>| . . | Infix OS — Immutable.Friendly.Secure
|
|
<a id="__codelineno-10-10" name="__codelineno-10-10" href="#__codelineno-10-10"></a>|-. v .-| https://kernelkit.org
|
|
<a id="__codelineno-10-11" name="__codelineno-10-11" href="#__codelineno-10-11"></a>'-'---'-'
|
|
<a id="__codelineno-10-12" name="__codelineno-10-12" href="#__codelineno-10-12"></a>
|
|
<a id="__codelineno-10-13" name="__codelineno-10-13" href="#__codelineno-10-13"></a>Run the command 'cli' for interactive OAM
|
|
<a id="__codelineno-10-14" name="__codelineno-10-14" href="#__codelineno-10-14"></a>
|
|
<a id="__codelineno-10-15" name="__codelineno-10-15" href="#__codelineno-10-15"></a>admin@infix-00-00-00:~$
|
|
</code></pre></div>
|
|
<p>From here we can observe <code>dut1</code> freely while running tests.</p>
|
|
<p>Like the <code>shell</code> script, <code>console</code> takes an optional "system" argument
|
|
in case you run multiple instances of Infamy:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-11-1" name="__codelineno-11-1" href="#__codelineno-11-1"></a>$ ./test/console 1 infamy2
|
|
<a id="__codelineno-11-2" name="__codelineno-11-2" href="#__codelineno-11-2"></a>...
|
|
</code></pre></div>
|
|
<p>You can also connect to the console of a DUT from within a <code>shell</code>:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-12-1" name="__codelineno-12-1" href="#__codelineno-12-1"></a>$ ./test/shell
|
|
<a id="__codelineno-12-2" name="__codelineno-12-2" href="#__codelineno-12-2"></a>11:42:54 infamy0:test # qeneth status
|
|
<a id="__codelineno-12-3" name="__codelineno-12-3" href="#__codelineno-12-3"></a>11:42:54 infamy0:test # qeneth console dut1
|
|
<a id="__codelineno-12-4" name="__codelineno-12-4" href="#__codelineno-12-4"></a>login: admin
|
|
<a id="__codelineno-12-5" name="__codelineno-12-5" href="#__codelineno-12-5"></a>password: *****
|
|
<a id="__codelineno-12-6" name="__codelineno-12-6" href="#__codelineno-12-6"></a>admin@infix-00-00-00:~$
|
|
</code></pre></div>
|
|
<div class="admonition tip">
|
|
<p class="admonition-title">Tip</p>
|
|
<p>Disconnect from the qeneth console by bringing up the old Telnet
|
|
"menu" using Ctrl-], compared to standard Telnet this is the BusyBox
|
|
version so you press 'e' + enter instead of 'q' to quit.</p>
|
|
</div>
|
|
<h3 id="attaching-to-macvlans">Attaching to MACVLANs<a class="headerlink" href="#attaching-to-macvlans" title="Permanent link">¶</a></h3>
|
|
<p>To fully isolate the host's interfaces from one another, many tests
|
|
will stack a MACVLAN on an interface, which is then placed in a
|
|
separate network namespace.</p>
|
|
<p>It is often useful to attach to those namespaces, so that you can
|
|
interactively inject traffic into the test setup.</p>
|
|
<p>First, connect to the Infamy instance in question:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-13-1" name="__codelineno-13-1" href="#__codelineno-13-1"></a>$ ./test/shell
|
|
<a id="__codelineno-13-2" name="__codelineno-13-2" href="#__codelineno-13-2"></a>11:43:19 infamy0:test #
|
|
</code></pre></div>
|
|
<p>Then, attach to the MACVLAN namespace by running the <code>nsenter</code> helper
|
|
script from the test directory, supplying the base interface name as
|
|
the first argument:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-14-1" name="__codelineno-14-1" href="#__codelineno-14-1"></a>11:43:19 infamy0:test # ./nsenter d1b
|
|
<a id="__codelineno-14-2" name="__codelineno-14-2" href="#__codelineno-14-2"></a>11:43:20 infamy0(d1b):test #
|
|
</code></pre></div>
|
|
<p>By default, an interactive shell is started, but you can also supply
|
|
another command:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-15-1" name="__codelineno-15-1" href="#__codelineno-15-1"></a>11:43:19 infamy0:test # ./nsenter d1b ip -br addr
|
|
<a id="__codelineno-15-2" name="__codelineno-15-2" href="#__codelineno-15-2"></a>lo UNKNOWN 127.0.0.1/8 ::1/128
|
|
<a id="__codelineno-15-3" name="__codelineno-15-3" href="#__codelineno-15-3"></a>iface@if7 UP 10.0.0.1/24 fe80::38d0:88ff:fe77:b7cd/64
|
|
</code></pre></div>
|
|
<p>You can now freely debug the network activity of your test and the
|
|
responses from the DUT.</p>
|
|
<h3 id="using-the-python-debugger">Using the Python Debugger<a class="headerlink" href="#using-the-python-debugger" title="Permanent link">¶</a></h3>
|
|
<p>The built in <code>breakpoint()</code> function in Python is very useful when you
|
|
want to run a test case to a certain point at which you might want to
|
|
interactively inspect either the test's or the device's state.</p>
|
|
<p>Simply insert a call to <code>breakpoint()</code> at the point of interest in
|
|
your test and run it as normal. Once Python executes the call, it will
|
|
drop you into the Python debugger:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-16-1" name="__codelineno-16-1" href="#__codelineno-16-1"></a>11:42:58 infamy0:test # ./case/infix_dhcp/dhcp_basic.py
|
|
<a id="__codelineno-16-2" name="__codelineno-16-2" href="#__codelineno-16-2"></a># Starting (2024-02-10 11:42:59)
|
|
<a id="__codelineno-16-3" name="__codelineno-16-3" href="#__codelineno-16-3"></a># Probing dut1 on port d1a for IPv6LL mgmt address ...
|
|
<a id="__codelineno-16-4" name="__codelineno-16-4" href="#__codelineno-16-4"></a># Connecting to mgmt IP fe80::ff:fe00:0%d1a:830 ...
|
|
<a id="__codelineno-16-5" name="__codelineno-16-5" href="#__codelineno-16-5"></a>ok 1 - Initialize
|
|
<a id="__codelineno-16-6" name="__codelineno-16-6" href="#__codelineno-16-6"></a>> /home/jocke/src/infix/test/case/infix_dhcp/dhcp_basic.py(44)<module>()
|
|
<a id="__codelineno-16-7" name="__codelineno-16-7" href="#__codelineno-16-7"></a>(Pdb)
|
|
</code></pre></div>
|
|
<p>At this point you have full access to the test's state, but it is also
|
|
an opportunity to inspect the state of the DUTs (e.g. via their
|
|
console or over SSH).</p>
|
|
<p>It is also possible to run a test under Pdb from the get-go, if you
|
|
want to setup breakpoints without modifying the source, or simply step
|
|
through the code:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-17-1" name="__codelineno-17-1" href="#__codelineno-17-1"></a>11:42:58 infamy0:test # python -m pdb case/infix_dhcp/dhcp_basic.py
|
|
</code></pre></div>
|
|
<h3 id="deterministic-topology-mappings">Deterministic Topology Mappings<a class="headerlink" href="#deterministic-topology-mappings" title="Permanent link">¶</a></h3>
|
|
<p>By default, mappings from logical to physical topologies are not
|
|
stable across test case executions. This can be very frustrating when
|
|
debugging a failing test, since logical nodes are suffled around
|
|
between phyical nodes. In such cases, supplying a <code>PYTHONHASHSEED</code>
|
|
variable (set to any 32-bit unsigned integer) when launching the test
|
|
environment will make sure that topology mappings are deterministic:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-18-1" name="__codelineno-18-1" href="#__codelineno-18-1"></a>$ make PYTHONHASHSEED=0 test-sh
|
|
</code></pre></div>
|
|
<p>If a seed is not supplied, a random value is chosen. This seed is
|
|
logged by the <code>meta/reproducible.py</code> test case when running a test
|
|
suite:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-19-1" name="__codelineno-19-1" href="#__codelineno-19-1"></a>$ make test
|
|
<a id="__codelineno-19-2" name="__codelineno-19-2" href="#__codelineno-19-2"></a>Info: Generating topology
|
|
<a id="__codelineno-19-3" name="__codelineno-19-3" href="#__codelineno-19-3"></a>Info: Generating node YAML
|
|
<a id="__codelineno-19-4" name="__codelineno-19-4" href="#__codelineno-19-4"></a>Info: Generating executables
|
|
<a id="__codelineno-19-5" name="__codelineno-19-5" href="#__codelineno-19-5"></a>Info: Launching dut1
|
|
<a id="__codelineno-19-6" name="__codelineno-19-6" href="#__codelineno-19-6"></a>Info: Launching dut2
|
|
<a id="__codelineno-19-7" name="__codelineno-19-7" href="#__codelineno-19-7"></a>Info: Launching dut3
|
|
<a id="__codelineno-19-8" name="__codelineno-19-8" href="#__codelineno-19-8"></a>Info: Launching dut4
|
|
<a id="__codelineno-19-9" name="__codelineno-19-9" href="#__codelineno-19-9"></a>9PM - Simplicity is the ultimate sophistication
|
|
<a id="__codelineno-19-10" name="__codelineno-19-10" href="#__codelineno-19-10"></a>
|
|
<a id="__codelineno-19-11" name="__codelineno-19-11" href="#__codelineno-19-11"></a>Starting test 0002-reproducible.py
|
|
<a id="__codelineno-19-12" name="__codelineno-19-12" href="#__codelineno-19-12"></a>2024-05-03 10:40:30 # Starting (2024-05-03 10:40:30)
|
|
<a id="__codelineno-19-13" name="__codelineno-19-13" href="#__codelineno-19-13"></a>2024-05-03 10:40:30 # Specify PYTHONHASHSEED=3773822171 to reproduce this test environment
|
|
<a id="__codelineno-19-14" name="__codelineno-19-14" href="#__codelineno-19-14"></a>2024-05-03 10:40:30 ok 1 - $PYTHONHASHSEED is set
|
|
<a id="__codelineno-19-15" name="__codelineno-19-15" href="#__codelineno-19-15"></a>2024-05-03 10:40:30 # Exiting (2024-05-03 10:40:30)
|
|
<a id="__codelineno-19-16" name="__codelineno-19-16" href="#__codelineno-19-16"></a>2024-05-03 10:40:30 1..1
|
|
<a id="__codelineno-19-17" name="__codelineno-19-17" href="#__codelineno-19-17"></a>...
|
|
</code></pre></div>
|
|
<p>This is useful because this value can then be used to rerun a test (or
|
|
the whole suite) with identical topology mappings:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-20-1" name="__codelineno-20-1" href="#__codelineno-20-1"></a>$ make PYTHONHASHSEED=3773822171 TESTS=case/ietf_system/hostname.py test
|
|
</code></pre></div>
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<h3 id="deterministic-transport-protocol">Deterministic Transport Protocol<a class="headerlink" href="#deterministic-transport-protocol" title="Permanent link">¶</a></h3>
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<p>By default, the communication transport protocol (NETCONF/RESTCONF) is
|
|
chosen randomly. If you supply a <code>PYTHONHASHSEED</code> as described above,
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|
you get the same protocol used for that hash. But if you want to choose
|
|
the protocol, add extra arguments to Infamy:</p>
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|
<div class="highlight"><pre><span></span><code><a id="__codelineno-21-1" name="__codelineno-21-1" href="#__codelineno-21-1"></a>$ make INFAMY_EXTRA_ARGS="--transport=restconf" TESTS=case/ietf_system/hostname.py test
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</code></pre></div>
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<p>or, when running interactively:</p>
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<div class="highlight"><pre><span></span><code><a id="__codelineno-22-1" name="__codelineno-22-1" href="#__codelineno-22-1"></a>$ make test-sh
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<a id="__codelineno-22-2" name="__codelineno-22-2" href="#__codelineno-22-2"></a>09:08:17 infamy0:test # ./9pm/9pm.py -o"--transport=restconf" case/ietf_system/hostname.py
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</code></pre></div>
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<h3 id="test-specification">Test specification<a class="headerlink" href="#test-specification" title="Permanent link">¶</a></h3>
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<p>The test specification is automaticly generated from the test cases,
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this puts some constraints on the test cases:</p>
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<p>All test cases must be written so that it can be understandable with
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only the steps so the result can be reproduced manually. E.g., instead
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of <code>set ip address on the interface</code> it should be more human readable,
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for example:</p>
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<div class="highlight"><pre><span></span><code><a id="__codelineno-23-1" name="__codelineno-23-1" href="#__codelineno-23-1"></a><span class="n">test</span><span class="o">.</span><span class="n">step</span><span class="p">(</span><span class="s2">"Set IPv4 address on the interface dut:cross"</span><span class="p">)</span>
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<a id="__codelineno-23-2" name="__codelineno-23-2" href="#__codelineno-23-2"></a><span class="n">test</span><span class="o">.</span><span class="n">step</span><span class="p">(</span><span class="s2">"Verify the IP address is set on dut:cross"</span><span class="p">)</span>
|
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</code></pre></div>
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<p>where <em>dut</em>, <em>cross</em> and the IPv4 address could be found inside the
|
|
logical topology for the test.</p>
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|
<p>Each test case must begin with the test name followed by a empty line
|
|
and the description of the test. For example:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-24-1" name="__codelineno-24-1" href="#__codelineno-24-1"></a>"""
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<a id="__codelineno-24-2" name="__codelineno-24-2" href="#__codelineno-24-2"></a>Set hostname
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<a id="__codelineno-24-3" name="__codelineno-24-3" href="#__codelineno-24-3"></a>
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|
<a id="__codelineno-24-4" name="__codelineno-24-4" href="#__codelineno-24-4"></a>Verify that it it possible to change hostname
|
|
<a id="__codelineno-24-5" name="__codelineno-24-5" href="#__codelineno-24-5"></a>"""
|
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</code></pre></div>
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<p>The test specifaction can be genererated with:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-25-1" name="__codelineno-25-1" href="#__codelineno-25-1"></a>$ make test-spec
|
|
<a id="__codelineno-25-2" name="__codelineno-25-2" href="#__codelineno-25-2"></a>...
|
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</code></pre></div>
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<h3 id="test-development">Test Development<a class="headerlink" href="#test-development" title="Permanent link">¶</a></h3>
|
|
<p>For adding a new test to the automated regression test suite, it's best
|
|
to start by reviewing an existing test case.</p>
|
|
<p>All tests are located in the <code>infix/test/case</code> repository and are
|
|
grouped by the features they verify. For example,
|
|
<code>infix/test/case/infix_services</code> contains tests for various Infix
|
|
services, such as LLDP and mDNS.</p>
|
|
<p>While test grouping is flexible, each test should be placed in a
|
|
logically relevant category.</p>
|
|
<p>When creating a new test group, add it to <code>infix/test/case/all.yaml</code>, to
|
|
enable it to run as a <a href="#running-subsets-of-tests">subset of the test
|
|
suite</a>:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-26-1" name="__codelineno-26-1" href="#__codelineno-26-1"></a>- name: infix-services
|
|
<a id="__codelineno-26-2" name="__codelineno-26-2" href="#__codelineno-26-2"></a> suite: infix_services/infix_services.yaml
|
|
</code></pre></div>
|
|
<p>A new test (e.g., lldp_enable_disable) should be added to the
|
|
corresponding test group .yaml file, such as
|
|
<code>infix/test/cases/infix_services.yaml</code>:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-27-1" name="__codelineno-27-1" href="#__codelineno-27-1"></a>- name: lldp_enable_disable
|
|
<a id="__codelineno-27-2" name="__codelineno-27-2" href="#__codelineno-27-2"></a> case: lldp_enable_disable/test.py
|
|
</code></pre></div>
|
|
<p>It is necessary to include the test in
|
|
<code>infix/test/case/infix_services/Readme.adoc</code> to ensure proper test
|
|
specification generation:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-28-1" name="__codelineno-28-1" href="#__codelineno-28-1"></a>include::lldp_enable_disable/Readme.adoc[]
|
|
</code></pre></div>
|
|
<p>Each test case should have its own directory under,
|
|
<code>infix/test/case/infix_services</code>, containing:</p>
|
|
<ul>
|
|
<li><code>test.py</code> - the test script</li>
|
|
<li><code>topology.dot</code> - the logical topology definition.</li>
|
|
</ul>
|
|
<p>When the <a href="#test-specification">test specification</a> is generated,
|
|
<code>topology.svg</code> and <code>Readme.adoc</code> should also be created.</p>
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