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<div class="highlight-json notranslate"><div class="highlight"><pre><span></span><span class="p">{</span><span class="w"> </span><span class="nt">"igmp"</span><span class="p">:</span><span class="w"> </span><span class="p">{}</span><span class="w"> </span><span class="p">}</span><span class="w"></span>
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</pre></div>
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</div>
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<table class="colwidths-given docutils align-default">
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<colgroup>
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<col style="width: 25%" />
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<col style="width: 50%" />
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<col style="width: 25%" />
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</colgroup>
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<thead>
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<tr class="row-odd"><th class="head"><p>Attribute</p></th>
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<th class="head"><p>Description</p></th>
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<th class="head"><p>Default</p></th>
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</tr>
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</thead>
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<tbody>
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<tr class="row-even"><td><p><cite>autostart</cite></p></td>
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<td><p>Automatically join after session is established</p></td>
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<td><p>true</p></td>
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</tr>
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<tr class="row-odd"><td><p><cite>version</cite></p></td>
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<td><p>IGMP protocol version (1, 2 or 3)</p></td>
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<td><p>3</p></td>
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</tr>
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<tr class="row-even"><td><p><cite>combined-leave-join</cite></p></td>
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<td><p>Combine leave and join records within a single IGMPv3 report</p></td>
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<td><p>true</p></td>
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</tr>
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<tr class="row-odd"><td><p><cite>start-delay</cite></p></td>
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<td><p>Delay between session established and initial IGMP join in seconds</p></td>
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<td><p>1</p></td>
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</tr>
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<tr class="row-even"><td><p><cite>group</cite></p></td>
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<td><p>Multicast group base address (e.g. 239.0.0.1)</p></td>
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<td><p>0.0.0.0 (disabled)</p></td>
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</tr>
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<tr class="row-odd"><td><p><cite>group-iter</cite></p></td>
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<td><p>Multicast group iterator</p></td>
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<td><p>0.0.0.1</p></td>
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</tr>
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<tr class="row-even"><td><p><cite>group-count</cite></p></td>
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<td><p>Multicast group count</p></td>
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<td><p>1</p></td>
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</tr>
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<tr class="row-odd"><td><p><cite>source</cite></p></td>
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<td><p>Multicast source address (e.g. 1.1.1.1)</p></td>
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<td><p>0.0.0.0 (ASM)</p></td>
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</tr>
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<tr class="row-even"><td><p><cite>zapping-interval</cite></p></td>
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<td><p>IGMP channel zapping interval in seconds</p></td>
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<td><p>0 (disabled)</p></td>
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</tr>
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<tr class="row-odd"><td><p><cite>zapping-count</cite></p></td>
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<td><p>Define the amount of channel changes before starting view duration</p></td>
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<td><p>0 (disabled)</p></td>
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</tr>
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<tr class="row-even"><td><p><cite>view-duration</cite></p></td>
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<td><p>Define the view duration in seconds</p></td>
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<td><p>0 (disabled)</p></td>
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</tr>
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<tr class="row-odd"><td><p><cite>send-multicast-traffic</cite></p></td>
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<td><p>Generate multicast traffic</p></td>
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<td><p>false</p></td>
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</tr>
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<tr class="row-even"><td><p><cite>multicast-traffic-length</cite></p></td>
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<td><p>Multicast traffic IP length</p></td>
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<td><p>76</p></td>
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</tr>
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<tr class="row-odd"><td><p><cite>multicast-traffic-tos</cite></p></td>
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<td><p>Multicast traffic TOS priority</p></td>
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<td><p>0</p></td>
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</tr>
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<tr class="row-even"><td><p><cite>network-interface</cite></p></td>
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<td><p>Multicast traffic source interface</p></td>
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<td></td>
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</tr>
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<tr class="row-odd"><td><p><cite>max-join-delay</cite></p></td>
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<td><p>Maximum join delay in milliseconds</p></td>
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<td><p>0 (disabled)</p></td>
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</tr>
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</tbody>
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</table>
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<p>Per default join and leave requests are send using dedicated reports.
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The option <code class="docutils literal notranslate"><span class="pre">combined-leave-join</span></code> allows the combination of leave and
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join records within a single IGMPv3 report using multiple group records.
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This option is applicable to IGMP version 3 only!</p>
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<p>If <code class="docutils literal notranslate"><span class="pre">send-multicast-traffic</span></code> is true, the BNG Blaster generates multicast
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traffic on the network interface based on the specified group and source
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attributes mentioned before. This traffic includes some special signatures
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for faster processing and more detailed analysis.</p>
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<p>If group is set to 293.0.0.1 with group-iter of 0.0.0.2, source 1.1.1.1
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and group-count 3 the result are the following three groups (S.G)
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1.1.1.1,239.0.0.1, 1.1.1.1,239.0.0.3 and 1.1.1.1,239.0.0.5.</p>
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<p>If <code class="docutils literal notranslate"><span class="pre">max-join-delay</span></code> is configured, the final report includes how often
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the measured join delay is above the configured threshold here.</p>
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