Temperature monitoring

Eric Kuhnke eric.kuhnke at gmail.com
Fri Jul 14 05:59:24 CST 2017

If all that you require is temperature monitoring, I recommend going
through the SNMP MIBs and doing an snmpwalk of your devices to identify the
sensors at the air intake...  Unfortunately there are some devices which do
not have air intake sensors, but only a sensor somewhere generally in the
center of the motherboard. But other devices have temperature diodes nearly
everywhere. The attached chart example from an Arista 1U switch is a device
which is really good about identifying the location of the individual
sensors in the MIB.

When purchasing a temperature monitoring standalone device, I highly
recommend something that is capable of not only temperature sensors but
also highly useful things like relay controls, wire contacts for other
equipment alarms, contacts for things like door/cabinet opening sensors,
etc. With the right high-frequency snmp polling and trap setup you can use
such a thing for a great deal more than just temperature. I have seen
examples of the Tinycontrol v3 used by NOCs to grant third parties access
to POPs via remotely triggered relays and magnetic strike door locks.

Here's a couple of good examples:




On Thu, Jul 13, 2017 at 10:45 PM, Richard Holbo <holbor at sonss.net> wrote:

> http://tyconsystems.com/index.php/products/tycon-power/
> tpdin-monitor-web/751-tpdin-monitor-web2
> Is what I use in my cabinets. Has two temp sensors, one internal and one
> external.  I put the external near the AC cold air output so I can get a
> diff and know if the AC is on.  SNMP cacti graphs them nicely.  I use one
> of the voltage sensors to monitor the cabinet doors via reed switches. In
> remote mountain sites also use for battery/solar voltages and to monitor
> wall warts for Utility power loss.
> /rh
> On Thu, Jul 13, 2017 at 7:33 PM, Dovid Bender <dovid at telecurve.com> wrote:
> > All,
> >
> > We had an issue with a DC where temps were elevated. The one bit of
> > hardware that wasn't watched much was the one that sent out the initial
> > alert. Looking for recommendations on hardware that I can mount/hang in
> > each cabinet that is easy to set up and will alert us if temps go beyond
> a
> > certain point.
> >
> > TIA.
> >
> > Dovid
> >

More information about the NANOG mailing list