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[E-impact] Re: Digging into the source of SNMP data

Romain Jacob <jacobr@ethz.ch> Thu, 07 November 2024 20:01 UTC

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Date: Thu, 07 Nov 2024 21:01:45 +0100
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To: Toerless Eckert <tte@cs.fau.de>
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From: Romain Jacob <jacobr@ethz.ch>
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Subject: [E-impact] Re: Digging into the source of SNMP data
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Hi Toerless

> I wonder if questions like this might now be more appropriate to thegreen@ietf.org
> WG mailing list given how that one seems to be mostly around instrumenting
> routers with such measurement options. Cc'ed.
Good point, thanks for forwarding.
> Which router product/model are you using , and which MIB OIDs are you using ?

In that particular case, that's a Cisco 8201-32FH. I am not entirely 
sure about the exact MIB since I'm not collecting the data myself. Simon 
Leinen, from SWITCH, put this together (Many thanks again, Simon!).

AFAIU, the relevant MIB entries can be read from this file [1].

Cheers, -- Romain

[1] 
https://github.com/sleinen/snmp-session/blob/master/test/get-cisco-power-usage.pl 


> I remember from the past routers with separate environmental support hardware,
> so i would not want to exclude that there may be different sources of truth.
>
> Cheers
>      Toerless
>
> On Thu, Nov 07, 2024 at 05:29:25PM +0100, Romain Jacob wrote:
>> Hello everyone,
>>
>> I have access to power data collected via SNMP. The numbers do not match the
>> sensor data that I can get manually from the router with commands like `sh
>> env all` or similar, which makes me wonder where the power data that I get
>> from SNMP comes from, or how it is preprocessed before it is piped to SNMP.
>>
>> If some of you have any clues or pointers, I'd be very interested :-)
>>
>> Thanks,
>>
>> -- 
>> Romain JACOB
>> Postdoctoral Researcher
>> ETH Zurich
>> Networked Systems Group (NSG)
>> Lead: Prof. Laurent Vanbever
>> www.romainjacob.net  <https://www.romainjacob.net/>
>> @RJacobPartner<https://twitter.com/RJacobPartner>
>> @jacobr@discuss.systems<https://discuss.systems/@jacobr>
>> Gloriastrasse 35, ETZ G84
>> 8092 Zurich
>> +41 7 68 16 88 22
>
>
>> -- 
>> E-impact mailing list --e-impact@ietf.org
>> To unsubscribe send an email toe-impact-leave@ietf.org
>
-- 
Romain JACOB
Postdoctoral Researcher
ETH Zurich
Networked Systems Group (NSG)
Lead: Prof. Laurent Vanbever
www.romainjacob.net <https://www.romainjacob.net/>
@RJacobPartner <https://twitter.com/RJacobPartner>
@jacobr@discuss.systems <https://discuss.systems/@jacobr>
Gloriastrasse 35, ETZ G84
8092 Zurich
+41 7 68 16 88 22

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