[OBS-3026] Wrong values for transceivers in Cisco 9500 - Observium

Details

Type: Vendor Bug
Resolution: Fixed
Priority: Trivial
Fix Version/s: None
Affects Version/s: Professional Edition
Component/s: Poller
Labels:
- cisco
- poller
Environment:
Cisco C9500-48Y4C, C9500-24Y4C, C9500-32C

Description

Obsevium are showing values for the transceivers incorrectly on Cisco Catalyst 9500.

Correct values:
Temp: 26.2c
Volt: 3.30v
Current: 17.9mA
Transmit: -6.5dBm
Receive: -23.1dBm

Values from Observium is in my screenshot.

This error makes my alerts on the transceivers pretty useless, looking forward for this being resolved.

Attachments

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dr11_debug_discovery.txt
2019/05/29 10:43 AM
1.26 MB
Tommy Jonsson
dr11_debug_poller.txt
2019/05/29 10:43 AM
17 kB
Tommy Jonsson
interface_values_twe2-0-17.txt
2019/05/29 10:48 AM
2 kB
Tommy Jonsson
interface_values.txt
2019/05/29 10:41 AM
2 kB
Tommy Jonsson
transceiver-stats.png
2019/05/29 08:57 AM
9 kB
Tommy Jonsson

Issue Links

relates to

OBS-3707 Values wrong for transceivers on Cisco ASR

Closed

Activity

[OBS-3026] Wrong values for transceivers in Cisco 9500

Tommy Jonsson added a comment - 2019/05/29 05:10 PM

Thanks!

I'll send Cisco a bugreport to get this fixed, I will inform you if/when they correct the bug.

Tommy Jonsson added a comment - 2019/05/29 05:10 PM Thanks! I'll send Cisco a bugreport to get this fixed, I will inform you if/when they correct the bug.

Mike Stupalov added a comment - 2019/05/29 02:06 PM

Hrm, when I looked more intently, I think error not in entSensorPrecision but in entSensorValue.

There seems as one character lost, ie current from console is 18.3, but entSensorValue.2213 = 18 (should be 183).

Mike Stupalov added a comment - 2019/05/29 02:06 PM Hrm, when I looked more intently, I think error not in entSensorPrecision but in entSensorValue . There seems as one character lost, ie current from console is 18.3, but entSensorValue.2213 = 18 (should be 183).

Mike Stupalov added a comment - 2019/05/29 01:30 PM

I added workaround in r9922.
(Device rediscovery required).

Please inform us if Cisco corrects this error.

Mike Stupalov added a comment - 2019/05/29 01:30 PM I added workaround in r9922. (Device rediscovery required). Please inform us if Cisco corrects this error.

Mike Stupalov added a comment - 2019/05/29 01:23 PM

Ok, I see error (in snmp output), see example for port twe2/0/17:

CISCO-ENTITY-SENSOR-MIB::entSensorType.2211 = celsius

CISCO-ENTITY-SENSOR-MIB::entSensorType.2212 = voltsDC

CISCO-ENTITY-SENSOR-MIB::entSensorType.2213 = amperes

CISCO-ENTITY-SENSOR-MIB::entSensorType.2214 = dBm

CISCO-ENTITY-SENSOR-MIB::entSensorType.2215 = dBm

CISCO-ENTITY-SENSOR-MIB::entSensorScale.2211 = units

CISCO-ENTITY-SENSOR-MIB::entSensorScale.2212 = units

CISCO-ENTITY-SENSOR-MIB::entSensorScale.2213 = milli

CISCO-ENTITY-SENSOR-MIB::entSensorScale.2214 = units

CISCO-ENTITY-SENSOR-MIB::entSensorScale.2215 = units

CISCO-ENTITY-SENSOR-MIB::entSensorPrecision.2211 = 1

CISCO-ENTITY-SENSOR-MIB::entSensorPrecision.2212 = 1

CISCO-ENTITY-SENSOR-MIB::entSensorPrecision.2213 = 1

CISCO-ENTITY-SENSOR-MIB::entSensorPrecision.2214 = 1

CISCO-ENTITY-SENSOR-MIB::entSensorPrecision.2215 = 1

CISCO-ENTITY-SENSOR-MIB::entSensorValue.2211 = 25

CISCO-ENTITY-SENSOR-MIB::entSensorValue.2212 = 3

CISCO-ENTITY-SENSOR-MIB::entSensorValue.2213 = 18

CISCO-ENTITY-SENSOR-MIB::entSensorValue.2214 = -6

CISCO-ENTITY-SENSOR-MIB::entSensorValue.2215 = -23

Here for example temperature sensor reports:

entSensorValue = 25
entSensorScale = units (in MIB description this equals to scale = 1)
entSensorPrecision = 1 (this value produce incorrect result scale)

MIB description for entSensorPrecision:
https://mibs.observium.org/mib/CISCO-ENTITY-SENSOR-MIB/#entSensorValue

This variable indicates the number of decimal

places of precision in fixed-point

sensor values reported by entSensorValue.

For your case, entSensorPrecision must be 0, but device report it as 1.

As I see you use latest firmware version 16.11.1, you need write to Cisco TAC about this trouble.

Mike Stupalov added a comment - 2019/05/29 01:23 PM Ok, I see error (in snmp output), see example for port twe2/0/17: CISCO-ENTITY-SENSOR-MIB::entSensorType.2211 = celsius CISCO-ENTITY-SENSOR-MIB::entSensorType.2212 = voltsDC CISCO-ENTITY-SENSOR-MIB::entSensorType.2213 = amperes CISCO-ENTITY-SENSOR-MIB::entSensorType.2214 = dBm CISCO-ENTITY-SENSOR-MIB::entSensorType.2215 = dBm CISCO-ENTITY-SENSOR-MIB::entSensorScale.2211 = units CISCO-ENTITY-SENSOR-MIB::entSensorScale.2212 = units CISCO-ENTITY-SENSOR-MIB::entSensorScale.2213 = milli CISCO-ENTITY-SENSOR-MIB::entSensorScale.2214 = units CISCO-ENTITY-SENSOR-MIB::entSensorScale.2215 = units CISCO-ENTITY-SENSOR-MIB::entSensorPrecision.2211 = 1 CISCO-ENTITY-SENSOR-MIB::entSensorPrecision.2212 = 1 CISCO-ENTITY-SENSOR-MIB::entSensorPrecision.2213 = 1 CISCO-ENTITY-SENSOR-MIB::entSensorPrecision.2214 = 1 CISCO-ENTITY-SENSOR-MIB::entSensorPrecision.2215 = 1 CISCO-ENTITY-SENSOR-MIB::entSensorValue.2211 = 25 CISCO-ENTITY-SENSOR-MIB::entSensorValue.2212 = 3 CISCO-ENTITY-SENSOR-MIB::entSensorValue.2213 = 18 CISCO-ENTITY-SENSOR-MIB::entSensorValue.2214 = -6 CISCO-ENTITY-SENSOR-MIB::entSensorValue.2215 = -23 Here for example temperature sensor reports: entSensorValue = 25 entSensorScale = units (in MIB description this equals to scale = 1) entSensorPrecision = 1 (this value produce incorrect result scale) MIB description for entSensorPrecision: https://mibs.observium.org/mib/CISCO-ENTITY-SENSOR-MIB/#entSensorValue This variable indicates the number of decimal places of precision in fixed-point sensor values reported by entSensorValue. For your case, entSensorPrecision must be 0 , but device report it as 1. As I see you use latest firmware version 16.11.1, you need write to Cisco TAC about this trouble.

Tommy Jonsson added a comment - 2019/05/29 10:43 AM

Allright, I've attached the files, the wrong values are for all transceivers, not just the one that I posted.

Tommy Jonsson added a comment - 2019/05/29 10:43 AM Allright, I've attached the files, the wrong values are for all transceivers, not just the one that I posted.

Mike Stupalov added a comment - 2019/05/29 09:54 AM

And pls show real values for sample interface from device console:

sh interfaces <interface> transceiver detail

Mike Stupalov added a comment - 2019/05/29 09:54 AM And pls show real values for sample interface from device console: sh interfaces <interface> transceiver detail

Mike Stupalov added a comment - 2019/05/29 09:49 AM

Yah, as most often it is for certain an error in a firmware (ios).

Please attach debug for:

./discovery.php -d -m sensors -h <device>

./poller.php -r -d -m os -h <device>

Mike Stupalov added a comment - 2019/05/29 09:49 AM Yah, as most often it is for certain an error in a firmware (ios). Please attach debug for: ./discovery.php -d -m sensors -h <device> ./poller.php -r -d -m os -h <device>

People

Assignee:: Mike Stupalov

Reporter:: Tommy Jonsson

Votes:: 0 Vote for this issue

Watchers:: 2 Start watching this issue

Dates

Created:: 2019/05/29 09:05 AM

Updated:: 2021/04/05 10:26 PM

Resolved:: 2019/05/29 01:30 PM