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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Intent-based network</span></span>
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<p><b>Intent-Based Networking (IBN)</b> is an approach to <a href="Network_management" title="Network management">network management</a> that shifts the focus from manually configuring individual devices to specifying desired outcomes or business objectives, referred to as "intents".<sup id="cite_ref-:0_1-0" class="reference"><a href="#cite_note-:0-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="Description">Description</h2></div>
<p>Rather than relying on low-level commands to configure the <a href="Computer_network" title="Computer network">network</a>, <a href="Network_administrator" title="Network administrator">administrators</a> define these high-level intents, and the network dynamically adjusts itself to meet these requirements.<sup id="cite_ref-:0_1-1" class="reference"><a href="#cite_note-:0-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> IBN simplifies the management of complex networks by ensuring that the <a href="Network_infrastructure" class="mw-redirect" title="Network infrastructure">network infrastructure</a> aligns with the desired operational goals. For example, an implementer can explicitly state a network purpose with a policy such as "Allow <a href="Host_(network)" title="Host (network)">hosts</a> A and B to communicate with X <a href="Bandwidth_(computing)" title="Bandwidth (computing)">bandwidth</a> capacity" without the need to understand the detailed mechanisms of the underlying devices (e.g. <a href="Switch" title="Switch">switches</a>), <a href="Network_topology" title="Network topology">topology</a> or <a href="Routing" title="Routing">routing</a> configurations.<sup id="cite_ref-:0_1-2" class="reference"><a href="#cite_note-:0-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="Architecture">Architecture</h2></div>
<p>Advances in <a href="Natural_language_understanding" title="Natural language understanding">Natural Language Understanding</a> (NLU) systems, along with neural network-based algorithms like <a href="Bidirectional_Encoder_Representations_from_Transformers" class="mw-redirect" title="Bidirectional Encoder Representations from Transformers">BERT</a>, <a href="RoBERTa" class="mw-redirect" title="RoBERTa">RoBERTa</a>, <a href="General_Language_Understanding_Evaluation" class="mw-redirect" title="General Language Understanding Evaluation">GLUE</a>, and ERNIE, have enabled the conversion of user queries into structured representations that can be processed by automated services.<sup id="cite_ref-:1_2-1" class="reference"><a href="#cite_note-:1-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> This capability is crucial for managing the increasing complexity of <a href="Network_service" title="Network service">network services</a>. Intent-Based Networking (IBN) leverages these advancements to simplify <a href="Network_management" title="Network management">network management</a> by abstracting <a href="Network_service" title="Network service">network services</a>, reducing operational complexity, and lowering costs.
</p><p>A proposed three-layered architecture integrates intent-based automation into network management systems. In the <b>business layer</b>, intents are based on <a href="Key_performance_indicators" class="mw-redirect" title="Key performance indicators">Key Performance Indicators</a> (KPIs) and <a href="Service-level_agreement" title="Service-level agreement">Service Level Agreements</a> (SLAs), reflecting business objectives.<sup id="cite_ref-:1_2-2" class="reference"><a href="#cite_note-:1-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> The <b>intent layer</b> evaluates and re-plans actions dynamically, where a <b>Knowledge</b> module abstracts and reasons about intents, while an <b>Agent</b> interfaces with network objects to execute actions.<sup id="cite_ref-:1_2-3" class="reference"><a href="#cite_note-:1-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> The <b>data layer</b> observes network objects, updates topology information, and interacts with the Knowledge and Agent modules to ensure accurate and timely responses to network changes. At the bottom, the <b>network layer</b> contains the physical infrastructure, transforming network data into a usable format for the intent layer to act upon.<sup id="cite_ref-:1_2-4" class="reference"><a href="#cite_note-:1-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
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</style><cite id="CITEREFUjcichBatesSanders2020" class="citation book cs1">Ujcich, Benjamin E.; Bates, Adam; Sanders, William H. (June 2020). <a rel="nofollow" class="external text" href="https://ieeexplore.ieee.org/document/9165519">"Provenance for Intent-Based Networking"</a>. <i>2020 6th IEEE Conference on Network Softwarization (NetSoft)</i>. IEEE. pp. <span class="nowrap">195–</span>199. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1109%2FNetSoft48620.2020.9165519">10.1109/NetSoft48620.2020.9165519</a>. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-1-7281-5684-2</bdi>.</cite></span>
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<li id="cite_note-:1-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-:1_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:1_2-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-:1_2-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-:1_2-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-:1_2-4"><sup><i><b>e</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFZeydanTurk2020" class="citation book cs1">Zeydan, Engin; Turk, Yekta (May 2020). <a rel="nofollow" class="external text" href="https://ieeexplore.ieee.org/document/9128422">"Recent Advances in Intent-Based Networking: A Survey"</a>. <i>2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring)</i>. IEEE. pp. <span class="nowrap">1–</span>5. <a href="Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1109%2FVTC2020-Spring48590.2020.9128422">10.1109/VTC2020-Spring48590.2020.9128422</a>. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-1-7281-5207-3</bdi>.</cite></span>
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