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Reset occured on FCVI port xx

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metrocluster
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Applies to

  • ONTAP 9
  • MetroCluster FC
  • Fiber Channel Virtual Interface (FC-VI)
  • Brocade Switch

Issue

  • Node event logs indicate frequent FCVI port reset and bad frame on port received

FC-VI adapter: Received bad frame on port xx. Mailbox-1 = 24, Mailbox-2 = 1857. Resetting the port.

  • NetApp reports "Reset occured on FCVI port <>" and connected Brocade switch port has too many errors.
  • Porterrshow output reports  lot of errors including link fail,pcs error, c3 tx discards and loss sig errors.
    porterrshow        :
              frames      enc    crc    crc    too    too    bad    enc   disc   link   loss   loss   frjt   fbsy  c3timeout    pcs    uncor
           tx     rx      in    err    g_eof  shrt   long   eof     out   c3    fail    sync   sig                  tx    rx     err    err
    1:    1.0g   2.4g   0      0      0      0      0      0      0      2.5k  22.4k   0      8.9k   0      0    557      1     25.3k   0
  • Switchshow reports the port status as "online".

Index Port Address  Media Speed   State       Proto
==================================================
1   1   070100   id    16G     Online      FC  F-Port  50:0a:09:82:07:f4:xy:xx

 

  • Both RX and TX power as per sfpshow output shows as "Not Available" even though the port status is online.

=============
Port  1:
=============
RX Power    :   Not Available
TX Power    :   Not Available

 

  • Port flapping events reports under errdump log:

2023/12/28-18:05:40, [AN-1014], 14352, FID 128, INFO, switch, Frame timeout detected, tx port 1 rx port 1, sid ffffxx, did 701xx, timestamp 2023-12-28 18:05:40 .

  • Low Rx power is reported on the end device  sfp connected to the switch i.e NetApp , which indicated the issue to be upstream to NetApp i.e cable or the switch end sfp.
  • Cables testing showed cable is fine.

 

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