[AusNOG] Switch Port Utilisation Monitoring

[Philip Loenneker]

You should be able to identify which ports have been in use over a period of time by clearing traffic counters at the start of your timeframe and then collecting the counter details at the end of the period. Those counters are usually available via SNMP, but clearing them may have to be done manually. Or you could collect the start value and do some maths. It really depends on how complex you want to make it and what tools you have available.

From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Tim Raphael
Sent: Thursday, 14 April 2016 1:28 PM
To: Paul Wilkins <paulwilkins369 at gmail.com>
Cc: <ausnog at lists.ausnog.net> <ausnog at lists.ausnog.net>
Subject: Re: [AusNOG] Switch Port Utilisation Monitoring

Lets assume I have SNMP available.

Will Cacti be able to tell me over (for example) a week how many and which switch ports are used?

- Tim




On 14 Apr 2016, at 11:27 AM, Paul Wilkins <paulwilkins369 at gmail.com<mailto:paulwilkins369 at gmail.com>> wrote:

MRTG and/or Cacti.
(Assuming a "managed" switch ie. SNMP)

Kind regards
Paul Wilkins

On 14 April 2016 at 13:20, Tim Raphael <raphael.timothy at gmail.com<mailto:raphael.timothy at gmail.com>> wrote:
Hi All,

I would like a tool that could tell me exactly how many switch ports are in use across a given time period.
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.

Also, as per usual, the cheaper (free?) the better!

Any ideas?

- Tim


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