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<div class="section" id="module-pyroute2.ndb.objects.route">
<span id="routes-management"></span><span id="ndbroutes"></span><h1>Routes management<a class="headerlink" href="#module-pyroute2.ndb.objects.route" title="Permalink to this headline">¶</a></h1>
<div class="section" id="simple-routes">
<h2>Simple routes<a class="headerlink" href="#simple-routes" title="Permalink to this headline">¶</a></h2>
<p>Ordinary routes management is really simple:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">(</span><span class="n">ndb</span> <span class="c1"># create a route</span>
<span class="o">.</span><span class="n">routes</span>
<span class="o">.</span><span class="n">create</span><span class="p">(</span><span class="n">dst</span><span class="o">=</span><span class="s1">'10.0.0.0/24'</span><span class="p">,</span> <span class="n">gateway</span><span class="o">=</span><span class="s1">'192.168.122.1'</span><span class="p">)</span>
<span class="o">.</span><span class="n">commit</span><span class="p">())</span>
<span class="p">(</span><span class="n">ndb</span> <span class="c1"># retrieve a route and change it</span>
<span class="o">.</span><span class="n">routes</span><span class="p">[</span><span class="s1">'10.0.0.0/24'</span><span class="p">]</span>
<span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s1">'gateway'</span><span class="p">,</span> <span class="s1">'192.168.122.10'</span><span class="p">)</span>
<span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s1">'priority'</span><span class="p">,</span> <span class="mi">500</span><span class="p">)</span>
<span class="o">.</span><span class="n">commit</span><span class="p">())</span>
<span class="p">(</span><span class="n">ndb</span> <span class="c1"># remove a route</span>
<span class="o">.</span><span class="n">routes</span><span class="p">[</span><span class="s1">'10.0.0.0/24'</span><span class="p">]</span>
<span class="o">.</span><span class="n">remove</span><span class="p">()</span>
<span class="o">.</span><span class="n">commit</span><span class="p">())</span>
</pre></div>
</div>
</div>
<div class="section" id="multiple-routing-tables">
<h2>Multiple routing tables<a class="headerlink" href="#multiple-routing-tables" title="Permalink to this headline">¶</a></h2>
<p>But Linux systems have more than one routing table:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="nb">set</span><span class="p">((</span><span class="n">x</span><span class="o">.</span><span class="n">table</span> <span class="k">for</span> <span class="n">x</span> <span class="ow">in</span> <span class="n">ndb</span><span class="o">.</span><span class="n">routes</span><span class="o">.</span><span class="n">summary</span><span class="p">()))</span>
<span class="go">{101, 254, 255, 5001, 5002}</span>
</pre></div>
</div>
<p>The main routing table is 254. All the routes people mostly work with are
in that table. To address routes in other routing tables, you can use dict
specs:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">(</span><span class="n">ndb</span>
<span class="o">.</span><span class="n">routes</span>
<span class="o">.</span><span class="n">create</span><span class="p">(</span><span class="n">dst</span><span class="o">=</span><span class="s1">'10.0.0.0/24'</span><span class="p">,</span> <span class="n">gateway</span><span class="o">=</span><span class="s1">'192.168.122.1'</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="mi">101</span><span class="p">)</span>
<span class="o">.</span><span class="n">commit</span><span class="p">())</span>
<span class="p">(</span><span class="n">ndb</span>
<span class="o">.</span><span class="n">routes</span><span class="p">[{</span><span class="s1">'table'</span><span class="p">:</span> <span class="mi">101</span><span class="p">,</span> <span class="s1">'dst'</span><span class="p">:</span> <span class="s1">'10.0.0.0/24'</span><span class="p">}]</span>
<span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s1">'gateway'</span><span class="p">,</span> <span class="s1">'192.168.122.10'</span><span class="p">)</span>
<span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s1">'priority'</span><span class="p">,</span> <span class="mi">500</span><span class="p">)</span>
<span class="o">.</span><span class="n">commit</span><span class="p">())</span>
<span class="p">(</span><span class="n">ndb</span>
<span class="o">.</span><span class="n">routes</span><span class="p">[{</span><span class="s1">'table'</span><span class="p">:</span> <span class="mi">101</span><span class="p">,</span> <span class="s1">'dst'</span><span class="p">:</span> <span class="s1">'10.0.0.0/24'</span><span class="p">}]</span>
<span class="o">.</span><span class="n">remove</span><span class="p">()</span>
<span class="o">.</span><span class="n">commit</span><span class="p">())</span>
</pre></div>
</div>
</div>
<div class="section" id="route-metrics">
<h2>Route metrics<a class="headerlink" href="#route-metrics" title="Permalink to this headline">¶</a></h2>
<p><cite>route[‘metrics’]</cite> attribute provides a dictionary-like object that
reflects route metrics like hop limit, mtu etc:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="c1"># set up all metrics from a dictionary</span>
<span class="p">(</span><span class="n">ndb</span>
<span class="o">.</span><span class="n">routes</span><span class="p">[</span><span class="s1">'10.0.0.0/24'</span><span class="p">]</span>
<span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s1">'metrics'</span><span class="p">,</span> <span class="p">{</span><span class="s1">'mtu'</span><span class="p">:</span> <span class="mi">1500</span><span class="p">,</span> <span class="s1">'hoplimit'</span><span class="p">:</span> <span class="mi">20</span><span class="p">})</span>
<span class="o">.</span><span class="n">commit</span><span class="p">())</span>
<span class="c1"># fix individual metrics</span>
<span class="p">(</span><span class="n">ndb</span>
<span class="o">.</span><span class="n">routes</span><span class="p">[</span><span class="s1">'10.0.0.0/24'</span><span class="p">][</span><span class="s1">'metrics'</span><span class="p">]</span>
<span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s1">'mtu'</span><span class="p">,</span> <span class="mi">1500</span><span class="p">)</span>
<span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s1">'hoplimit'</span><span class="p">,</span> <span class="mi">20</span><span class="p">)</span>
<span class="o">.</span><span class="n">commit</span><span class="p">())</span>
</pre></div>
</div>
</div>
<div class="section" id="mpls-routes">
<h2>MPLS routes<a class="headerlink" href="#mpls-routes" title="Permalink to this headline">¶</a></h2>
<p>See here: <a class="reference internal" href="mpls.html#mpls"><span class="std std-ref">MPLS howto</span></a></p>
</div>
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<h3><a href="index.html">Table of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">Routes management</a><ul>
<li><a class="reference internal" href="#simple-routes">Simple routes</a></li>
<li><a class="reference internal" href="#multiple-routing-tables">Multiple routing tables</a></li>
<li><a class="reference internal" href="#route-metrics">Route metrics</a></li>
<li><a class="reference internal" href="#mpls-routes">MPLS routes</a></li>
</ul>
</li>
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