https://vlan51.com/tags/alarms/Recent content in Alarms on vlan51Hugoen-gbThu, 01 Jan 2015 00:00:00 +0000https://vlan51.com/imc/link-flap-alarms/Thu, 01 Jan 2015 00:00:00 +0000https://vlan51.com/imc/link-flap-alarms/<p>IMC raises this alarm when a port flaps:</p> <div class="code"> <div class="code-bar"><span>cli</span><button class="copy" type="button" aria-label="Copy to clipboard">Copy</button></div><pre><code>iMC alarm system found event (Link UP) and event (Link DOWN) had 3 intermittent failures from &lt;date/time&gt; to &lt;date/time&gt;</code></pre></div> <h2 id="investigate-before-tuning">Investigate before tuning <a class="anchor" href="#investigate-before-tuning" aria-label="Link to this section">#</a></h2> <p>Don&rsquo;t dismiss link flaps. Find the device and port in the alarm, log into the switch, and check the log (newest first on ArubaOS-Switch):</p> <div class="code"> <div class="code-bar"><span>cli</span><button class="copy" type="button" aria-label="Copy to clipboard">Copy</button></div><pre><code>show logging -r</code></pre></div> <p>Look for errors like this one, which point to a real physical problem you need to fix:</p>