[c-nsp] ASR9000 and polling altitude

[Tom Hill]

On 2026-02-23 15:20, Hank Nussbacher via cisco-nsp wrote:
> ASR9000s report altitude (admin show environ) .  I have checked 
> CISCO-ENTITY-SENSOR-MIB and have not been able to see where I can poll 
> this number.
> 
> Anyone know how to poll?

I was under the impression that the altitude setting was manual, and was 
intended to help the system vary the fan speeds in line with the 
altitude.

There's something in the back of my brain about a bug wherein the fan 
curve wasn't quite optimised for certain hardware configurations, and so 
the workaround was to set the altitude to some higher number in order to 
force the fan curve to step-up (which could also then blow your PSU 
budget :))

But, this was all some time ago; perhaps it has changed in use?

Tom