[c-nsp] Optical - rx power low warning

[Sascha Pollok]

Hi Mike!

the Alarm status comes from the SFP. Togehther with the crapp chars I would 
say some internal values got messed up maybe incl the thresholds for 
alarms. -16dbm should be fine.

Talk to the vendor.

Cheers
Sascha


Am 30. April 2015 08:09:27 schrieb Mike <mike-cisconsplist at tiedyenetworks.com>:

> I am bringing up a new link. This is on CWDM fiber with a supposedly
> 80km optic. Path is about 20 miles. I'm getting the following warning
> messages:
>
> *Apr 29 2015 22:29:09.851 PST: %SFF8472-3-THRESHOLD_VIOLATION: Te0/3: Rx
> power low warning; Operating value: -16.4 dBm, Threshold value: -15.8 dBm.
>
> The link is working fine without issue but I want to know what I'm
> looking at and wether it's worthwhile to do something about it?
>
> Also in my show inventory for this I get:
>
> NAME: "TenGigabitEthernet0/3", DESCR: "10GBASE-ER/EW"
> PID: scrambled gobblydegook  VID: scrambled
> crap , SN: INEAC0060007
>
>
>      The 'pid' and 'vid' values are all high bit chars undecipherable.
> Lastly, Im including the detail output in case any of these numbers make
> sense:
>
> sh int te0/3 transceiver
> ITU Channel not available (Wavelength not available),
> Transceiver is internally calibrated.
> If device is externally calibrated, only calibrated values are printed.
> ++ : high alarm, +  : high warning, -  : low warning, -- : low alarm.
> NA or N/A: not applicable, Tx: transmit, Rx: receive.
> mA: milliamperes, dBm: decibels (milliwatts).
>
>                                             Optical   Optical
>             Temperature  Voltage  Current   Tx Power  Rx Power
> Port       (Celsius)    (Volts)  (mA)      (dBm)     (dBm)
> ---------  -----------  -------  --------  --------  --------
> Te0/3        34.1       0.00      91.5       2.4     -16.4 -
>
> sh int te0/3 transceiver detail
>
> ITU Channel not available (Wavelength not available),
> Transceiver is internally calibrated.
> mA: milliamperes, dBm: decibels (milliwatts), NA or N/A: not applicable.
> ++ : high alarm, +  : high warning, -  : low warning, -- : low alarm.
> A2D readouts (if they differ), are reported in parentheses.
> The threshold values are calibrated.
>
>                                High Alarm  High Warn  Low Warn   Low Alarm
>             Temperature        Threshold   Threshold  Threshold Threshold
> Port       (Celsius)          (Celsius)   (Celsius)  (Celsius) (Celsius)
> ---------  -----------------  ----------  ---------  --------- ---------
> Te0/3        34.1                   74.0       70.0        0.0 -4.0
>
>                                High Alarm  High Warn  Low Warn   Low Alarm
>             Voltage            Threshold   Threshold  Threshold Threshold
> Port       (Volts)            (Volts)     (Volts)    (Volts) (Volts)
> ---------  -----------------  ----------  ---------  --------- ---------
> Te0/3        0.00                    N/A        N/A N/A        N/A
>
>                                High Alarm  High Warn  Low Warn   Low Alarm
>             Current            Threshold   Threshold  Threshold Threshold
> Port       (milliamperes)     (mA)        (mA)       (mA)       (mA)
> ---------  -----------------  ----------  ---------  --------- ---------
> Te0/3        91.5                    N/A        N/A N/A        N/A
>
>             Optical            High Alarm  High Warn  Low Warn   Low Alarm
>             Transmit Power     Threshold   Threshold  Threshold Threshold
> Port       (dBm)              (dBm)       (dBm)      (dBm) (dBm)
> ---------  -----------------  ----------  ---------  --------- ---------
> Te0/3         2.4                    6.9        3.9       -4.7 -7.7
>
>             Optical            High Alarm  High Warn  Low Warn   Low Alarm
>             Receive Power      Threshold   Threshold  Threshold Threshold
> Port       (dBm)              (dBm)       (dBm)      (dBm) (dBm)
> ---------  -----------------  ----------  ---------  --------- ---------
> Te0/3       -16.4         -          1.9       -1.0      -15.8 -18.8
>
>
> Thanks.
>
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