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SRAM dumps causing intermittent disconnections on ESXi host

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Applies to

  • ONTAP 9
  • Multihop Brocade switch configuration
  • ESXi host

Issue

  • Frequent SRAM dumps on multiple ports causing disconnects on Esxi host.
  • EMS logs show:
Wed Sep 20 16:26:17 +0400 [Netapp04: fct_tpd_thread_7: scsitarget.fcp.dump:debug]: FCP target SRAM dump generated for adapter 3x, fct_tpd_check_hung_commands: Command termination hung. cmd:0xfffff81e7c951b40 (state=0xa, flags=0x2,ctio_sent=2/3, RecvExAddr=0x2a71, OX_ID=0x325b, RX_ID=0xffff, SID=0x5b0d17) 
Wed Sep 20 16:26:18 +0400 [Netapp04: fct_tpd_thread_7: callhome.fcp.sram.dump:error]: Call home for FCP SRAM DUMP.
  • Replacing cable and SFP on ONTAP ports does not fix the issue.
  • The SFPs are of optimal power on switch and ONTAP:
RXPower:    -0.8    dBm (827.5uW)
TXPower:    -0.1    dBm (983.4 uW)
  • Errdump logs on switch show timeouts:
2023/08/11-06:16:14, [AN-1014], 26175, FID 128, INFO, A, Frame timeout detected, tx port 23 rx port 11, sid b0b01, did 5b0d17, timestamp 2023-08-11 06:16:14 .
2023/08/11-06:16:14, [AN-1014], 26176, FID 128, INFO, A, Frame timeout detected, tx port 23 rx port 18, sid b1202, did 5b1900, timestamp 2023-08-11 06:16:14 .

 

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