[c-nsp] Optical - rx power low warning
Sascha Pollok
sp at iphh.net
Thu Apr 30 02:22:09 EDT 2015
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.
>
> _______________________________________________
> cisco-nsp mailing list cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
More information about the cisco-nsp
mailing list