<div dir="ltr"><div><br></div>Define "used".<div><br></div><div>Link up or actually carrying (meaningful) traffic?<br><br>For the former, you'd want to capture events as they happen, typically via snmp traps. Then just look at how many reported a link up trap (including those that havent reported link down since the last interval).</div><div><br></div><div>For the latter, a raw packet count might suffice, but you'll have difficulty differentiating idle/keepalive traffic if the amount is low.<br><br>Personally, I'd go with snmp traps/polls injected into Prometheus, but many people havent the time or inclination to change their mindset into vector/timeseries based systems (despite the advantages).</div><div><br>BB</div><div><br><div class="gmail_quote"><div dir="ltr">On Thu, Apr 14, 2016 at 1:28 PM Tim Raphael <<a href="mailto:raphael.timothy@gmail.com">raphael.timothy@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div>Lets assume I have SNMP available.</div><div><br></div><div>Will Cacti be able to tell me over (for example) a week how many and which switch ports are used?</div></div><div style="word-wrap:break-word"><div><br></div><div>- Tim</div></div><div style="word-wrap:break-word"><div><br></div><div><br></div><div><br></div><br><div><blockquote type="cite"><div>On 14 Apr 2016, at 11:27 AM, Paul Wilkins <<a href="mailto:paulwilkins369@gmail.com" target="_blank" class="cremed">paulwilkins369@gmail.com</a>> wrote:</div><br><div><div dir="ltr"><div><div>MRTG and/or Cacti.<br><br></div><div>(Assuming a "managed" switch ie. SNMP)<br></div><div><br></div>Kind regards<br><br></div>Paul Wilkins<br></div><div class="gmail_extra"><br><div class="gmail_quote">On 14 April 2016 at 13:20, Tim Raphael <span dir="ltr"><<a href="mailto:raphael.timothy@gmail.com" target="_blank" class="cremed">raphael.timothy@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi All,<br>
<br>
I would like a tool that could tell me exactly how many switch ports are in use across a given time period.<br>
This is an enterprise environment so it’s not just the case of taking a snapshot in time, devices turn on and off so I’d want something that could monitor the port counts for a week or so and spit out a report.<br>
<br>
Also, as per usual, the cheaper (free?) the better!<br>
<br>
Any ideas?<br>
<br>
- Tim<br>
<br>
<br>
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