Andrew-

 

I noticed this too, it was like if the SFP was inserted, it’d still throw an error because the transceiver tx/rx limits were technically still out of spec. There needs to be logic to check for the interface status first, then disable the thresholds/alerts if down.

 

I had just considered removing optics for ports that were shut, but kinda annoying for sure.

 

 

Adam Ward

Systems Engineer

Shamrock Trading Corporation

Office Phone/Fax: (913) 310-2247

Email: award@rtsfinancial.com

Website: www.shamrocktradingcorp.com

 

From: observium <observium-bounces@observium.org> on behalf of Andrew Lemin via observium <observium@observium.org>
Reply-To: Observium <observium@observium.org>
Date: Friday, March 22, 2019 at 10:46 AM
To: Andrew Lemin via observium <observium@observium.org>
Cc: Andrew Lemin <AndrewL@4d-dc.com>
Subject: [Observium] Low dbm sensor alerts for shutdown interfaces

 

Hi,

 

Has anyone else seen the issue where after enabling an alert checker for transceiver optics with sensor_value greater @sensor_limit and sensor_value less @sensor_limit_low, alerts are still received for shutdown interfaces?

 

For example, on a cisco switch when running ‘show interfaces transceiver detail’, we can see;

           Optical            High Alarm  High Warn  Low Warn   Low Alarm

           Receive Power      Threshold   Threshold  Threshold  Threshold

Port       (dBm)              (dBm)       (dBm)      (dBm)      (dBm)

Te1/1/25   -40.0                 1.9        -1.0        -9.9      -13.9

Te2/1/1    -40.0                 1.9        -1.0        -9.9      -13.9

Etc..

 

Te1/1/25                       admin down     down

Te2/1/1                        admin down     down

Etc

 

The sensors page shows the correct thresholds etc, but shows the interface in Red (and hence is generating alerts through the checker), rather than grey (as the port is shutdown and has no fibre connected – hence -40dbm.).

cid:image001.png@01D4E0C6.4F698990

 

The same port on the Ports page does show the interface as being grey/shutdown

cid:image002.png@01D4E0C6.4F698990

 

Have no idea how to resolve this and stop getting transceiver alerts for shutdown interfaces? This sounds like a potential bug?

 

Thanks, Andy.

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