Enc_out errors and crc_err together imply a GBIC/SFP problem.Statistically, enc_out errors on their own imply a cable/connector problem. It indicates a problem if it increments faster than the link-bit error rate allows, approximately once every 20 minutes for 1 Gbit/s.If this encoding is corrupted or an error is detected, enc_out is generated. 8bit/10bit encoding errors occurred in words (ordered sets) outside of the FC frame.If such a re-alignment occurs, detection of the resulting error condition is dependent upon higher level functions (such as invalid CRC or missing EOF).After a loss of synchronization error, continuous-mode alignment allows the receiver to re-establish word alignment at any point in the incoming bit stream while the receiver is operational.This could be caused by the transmitter or an unreliable link.38 bytes (not 48) including the SOF and EOF.
#Hp switch general transmit failure plus#
The too_short error statistics counter is incremented whenever a frame, bounded by an SOF and EOF is received, and the number of words between the SOF and EOF is less than 7 words (6 words header plus 1 word CRC), i.e.If an eof is corrupted or data generation is incorrect, a too_long error is reported.FC frames are 2148 bytes maximum (frames that were longer than the FC maximum - SOF+header+2112bytes+CRC+EOF).Generally speaking CRC_errs indicates an issue with the SFP.Therefore, it is important to know to what connection is being made and what is to be expected of this connection.This loop initialization may not be noticeable from ONTAP.ENC_out may be seen on loops connecting to a fabric (FMC for example) if a disk is changed or the loop initializes for any other reason. CRC and ENC_IN are pointing to a SFP and/or ASIC issue. Statistically, crc_err and enc_out errors together imply a GBIC/SFP problem.Receiving port uses the same formula to check and compare. A mathematical formula generates counters at sending port.This measured ratio is affected by many factors including: signal to noise, distortion, and jitter.The ratio of how many bits received in error over the number of total bits received is the BER.The BER is calculated by comparing the transmitted sequence of bits to the received bits and counting the number of errors.The Bit Error Rate (BER) formula is BER= Nerr/Nbits. Everything hitting the wire is encoded using 8/10b encoding.Reinitialization/reboots of the associated Nx-port can also cause these errors.Minimum compliance with the link bit error rate specification on a link continuously receiving frames would cause approximately one error every 20 minutes.Words inside of frames are encoded, if this encoding is corrupted or an error is detected, enc_in is generated.8bit/10bit encoding errors inside frame.The output displays a message similar to the following:įrames enc crc crc too too bad enc disc link loss loss frjt fbsy c3timeout For proper analysis, the stats for the ports should be cleared ( portstatsclear or statsclear) and the switch should be run for some time to see what errors are currently accumulating, if any.Errors in porterrshow are cumulative since the last time errors were cleared.
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