#BROCADE SAN SWITCH RPORT ERROR HOW TO#
#BROCADE SAN SWITCH RPORT ERROR PLUS#

#BROCADE SAN SWITCH RPORT ERROR PLUS#

The 'too short' counter is an error statistics counter which is incremented whenever a frame, bounded by an SOF (Start of Frame) and EOF (End of Frame), 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., 38 bytes (not 48) including the SOF and EOF. This allows CRC frame with good EOF to be quickly traced to the originating port. When a CRC with a good EOF is detected the switch will increment the crc g_eof counter, it will tag the frame so no other port will count this CRC frame and forward the frame on. These errors are in the sum for the LLI errorsД¬RC with good EOF (End Of Frame) recieved. Statistically, enc out errors alone imply cable problems, the enc out and crc err in combination implies GBIC/SFP problems.

Frames that fail a CRC are noted but not modified and the destination device is responsible for rejecting and/or re-requesting the frame. For the purpose of CRC computation, the bit of the word-aligned four-byte field that corresponds to the first bit transmitted is the highest order bit. The CRC field shall be aligned on a word boundary. The CRC field shall be calculated on the Frame header and Data Field prior to encoding for transmission and after decoding upon reception. SOF (= Start-Of-Frame) and EOF (= End-Of-Frame) delimiters shall not be included in the CRC verification. The Cyclic Redundancy Check (CRC) is a four-byte field that shall immediately follow the Data Field and shall be used to verify the data integrity of the frame header and Data Field. These errors are in the sum for the LLI errors.ДЇrames with Cyclic Redundancy Check errors: (RX) The number of frames that have failed a Cyclic Redundancy Check. Reinitialization and reboots of associated Nx-port can also cause these errors. Minimum compliance with the link-bit error rate specification on a link continuously receiving frames would allow approximately one error every 20 minutes for 1 Gb/s. This counter is generally a zero value, although occasional errors may occur on a normal link and give a nonzero result. The number of 8b/10b encoding errors that have occurred inside frame boundaries. This number is a statistic that provides a baseline for the error counters.Д®ncoding errors inside frames: (RX). This number is a statistic that provides a baseline for the error counters.ДЇrames received: The number of frames transmitted by the port. РџСЂРёС‡РёРЅР°ДЇrames transmitted: The number of frames transmitted by the port.

One output line is displayed per port, and shows error counters in ones, thousands (the number is followed by k), or millions (the number is followed by m). This command displays an error summary for all ports.

#BROCADE SAN SWITCH RPORT ERROR HOW TO#

Interprets and explains the porterrshow output (port errors) of Brocade SAN switches and possible causes of the errors.ДЇor action to be taken when counters increase see the copy of the KB articleД¬onnectrix: How to troubleshoot Fibre Channel node to switch port or SFP communication problems by means of elimination?ДЇrames enc crc crc too too bad enc disc link loss loss frjt fbsy c3timeout pcs uncor How to Interpret the Brocade porterrshow output

Brocade san switch rport error