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<li class="toctree-l2 current"><a class="current reference internal" href="#">Session Traffic</a><ul>
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<li class="breadcrumb-item"><a href="index.html">Access Protocols</a></li>
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<li class="breadcrumb-item active">Session Traffic</li>
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<section id="session-traffic">
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<span id="id1"></span><h1>Session Traffic<a class="headerlink" href="#session-traffic" title="Link to this heading"></a></h1>
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<p>The BNG Blaster can autogenerate bidirectional unicast
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session traffic for all addresses assigned to a session
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(IPv4, IPv6 and IPv6PD) and the corresponding network
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interface function.</p>
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<img alt="Session Traffic" src="../_images/bbl_session_traffic.png" />
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<p>This is a powerful tool to quickly verify that forwarding
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is correctly set up and working.</p>
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<div class="admonition note">
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<p class="admonition-title">Note</p>
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<p>All traffic sent from a network or a10nsp interfaces function
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is called downstream. All traffic sent from an access interface
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function is called upstream.</p>
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</div>
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<p>Those autogenerated traffic streams are named
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<code class="docutils literal notranslate"><span class="pre">session-ipv4</span></code>, <code class="docutils literal notranslate"><span class="pre">session-ipv6</span></code> and <code class="docutils literal notranslate"><span class="pre">session-ipv6pd</span></code>.</p>
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<img alt="BNG Blaster Interactive Session" src="../_images/bbl_interactive_session.png" />
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<section id="configuration">
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<h2>Configuration<a class="headerlink" href="#configuration" title="Link to this heading"></a></h2>
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<p>The following example shows how to enable session traffic.</p>
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<div class="highlight-json notranslate"><div class="highlight"><pre><span></span><span class="p">{</span>
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<span class="w"> </span><span class="nt">"session-traffic"</span><span class="p">:</span><span class="w"> </span><span class="p">{</span>
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<span class="w"> </span><span class="nt">"ipv4-pps"</span><span class="p">:</span><span class="w"> </span><span class="mi">1</span><span class="p">,</span>
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<span class="w"> </span><span class="nt">"ipv6-pps"</span><span class="p">:</span><span class="w"> </span><span class="mi">1</span><span class="p">,</span>
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<span class="w"> </span><span class="nt">"ipv6pd-pps"</span><span class="p">:</span><span class="w"> </span><span class="mi">1</span>
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<span class="w"> </span><span class="p">}</span>
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<span class="p">}</span>
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</pre></div>
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</div>
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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">"session-traffic"</span><span class="p">:</span><span class="w"> </span><span class="p">{}</span><span class="w"> </span><span class="p">}</span>
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</pre></div>
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</div>
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<table class="docutils align-default">
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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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</tr>
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</thead>
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<tbody>
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<tr class="row-even"><td><p><strong>autostart</strong></p></td>
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<td><div class="line-block">
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<div class="line">Automatically start session traffic as soon as the</div>
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<div class="line">corresponding session is established.</div>
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<div class="line">Default: true</div>
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</div>
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</td>
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</tr>
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<tr class="row-odd"><td><p><strong>ipv4-pps</strong></p></td>
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<td><div class="line-block">
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<div class="line">Autogenerate bidirectional IPv4 traffic</div>
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<div class="line">between a network interface and all sessions.</div>
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<div class="line">Default: 0 (disabled)</div>
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</div>
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</td>
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</tr>
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<tr class="row-even"><td><p><strong>ipv4-label</strong></p></td>
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<td><div class="line-block">
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<div class="line">Send downstream IPv4 traffic with the specified MPLS label.</div>
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<div class="line">Default: 0 (unlabeled)</div>
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</div>
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</td>
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</tr>
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<tr class="row-odd"><td><p><strong>ipv4-address</strong></p></td>
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<td><div class="line-block">
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<div class="line">Overwrite network interface IPv4 address.</div>
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<div class="line">Default: <cite>network interface address</cite></div>
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</div>
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</td>
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</tr>
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<tr class="row-even"><td><p><strong>ipv6-pps</strong></p></td>
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<td><div class="line-block">
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<div class="line">Generate bidirectional IPv6 traffic</div>
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<div class="line">between a network interface and all sessions.</div>
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<div class="line">Default: 0 (disabled)</div>
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</div>
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</td>
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</tr>
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<tr class="row-odd"><td><p><strong>ipv6-label</strong></p></td>
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<td><div class="line-block">
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<div class="line">Send downstream IPv6 traffic with the specified MPLS label.</div>
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<div class="line">Default: 0 (unlabeled)</div>
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</div>
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</td>
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</tr>
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<tr class="row-even"><td><p><strong>ipv6-address</strong></p></td>
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<td><div class="line-block">
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<div class="line">Overwrite network interface IPv6 address</div>
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<div class="line">Default: <cite>network interface address</cite></div>
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</div>
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</td>
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</tr>
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<tr class="row-odd"><td><p><strong>ipv6pd-pps</strong></p></td>
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<td><div class="line-block">
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<div class="line">Generate bidirectional IPv6PD (delegated prefix) traffic</div>
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<div class="line">between a network interface and all sessions.</div>
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<div class="line">Default: 0 (disabled)</div>
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</div>
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</td>
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</tr>
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</tbody>
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</table>
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<p>This traffic is generated between the session and a network
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interface. In case of multiple network interfaces, the preferred
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network interfaces can be selected using the <code class="docutils literal notranslate"><span class="pre">network-interface</span></code>
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option in the corresponding access configuration.</p>
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</section>
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<section id="verification">
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<h2>Verification<a class="headerlink" href="#verification" title="Link to this heading"></a></h2>
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<p>The final report includes detailed information
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for session traffic.</p>
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<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>Session Traffic (Global):
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------------------------------------------------------------------------------
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Config:
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PPS IPv4: 1
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PPS IPv6: 1
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PPS IPv6PD: 1
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Verified Traffic Flows: 96000/96000 (100.00%)
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Downstream IPv4: 16000
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Downstream IPv6: 16000
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Downstream IPv6PD: 16000
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Upstream IPv4: 16000
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Upstream IPv6: 16000
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Upstream IPv6PD: 16000
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Violations: >1s >1s-2s >2s-3s >3s
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Downstream IPv4: 12278 ( 12.79%) 3071 3040 6167
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Downstream IPv6: 12252 ( 12.76%) 3185 2900 6167
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Downstream IPv6PD: 12306 ( 12.82%) 3123 2978 6205
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Upstream IPv4: 12314 ( 12.83%) 3104 3033 6177
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Upstream IPv6: 12252 ( 12.76%) 3184 2891 6177
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Upstream IPv6PD: 12361 ( 12.88%) 3178 2957 6226
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Total: 73763 ( 76.84%) 18845 17799 37119
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First Sequence Received: MIN AVG MAX
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Downstream IPv4 1 ( 1.00s) 9 ( 9.00s) 64 (64.00s)
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Downstream IPv6 1 ( 1.00s) 9 ( 9.00s) 64 (64.00s)
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Downstream IPv6PD 1 ( 1.00s) 9 ( 9.00s) 64 (64.00s)
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Upstream IPv4 1 ( 1.00s) 9 ( 9.00s) 64 (64.00s)
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Upstream IPv6 1 ( 1.00s) 9 ( 9.00s) 64 (64.00s)
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Upstream IPv6PD 1 ( 1.00s) 9 ( 9.00s) 64 (64.00s)
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</pre></div>
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</div>
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<p>The <code class="docutils literal notranslate"><span class="pre">First</span> <span class="pre">Sequence</span> <span class="pre">Number</span> <span class="pre">Received</span></code> is used to measure the forwarding
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convergence. The session traffic starts automatically as soon as the session
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is established using the rate configured. All traffic flows in the BNG Blaster
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start with the 64bit sequence number 1. Assuming the first sequence number
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received for a given flow is 5 and the configured rate is 1 PPS, this would
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mean that it took between 4 and 5 seconds until forwarding is working.</p>
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</section>
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