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MetroCluster FC-VI Adapter is flapping

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Applies to

  • ONTAP 9
  • Fabric MetroCluster
  • Brocade backend switch

Issue

  • FC-VI adapter is flapping and is reporting errors in the EMS logs:
    ClusterA::> fcvi.qlgc.rmt.link.down: FC-VI adapter link to partner node over port 1a is down
    ClusterA::> fcvi.qlgc.rmt.link.down: FC-VI adapter link to partner node over port 1a is down
    ClusterA::> fcvi.qlgc.rmt.link.up: FC-VI adapter link to partner node over port 1a is up
    ClusterA::> fcvi.qlgc.rmt.link.down: FC-VI adapter link to partner node over port 1a is down
  • Loss of signal and link failure errors reported in porterrshow output on the brocade backend switch on the ISL port(s):
    porterrshow        :
              frames      enc    crc    crc    too    too    bad    enc   disc   link   loss   loss   frjt   fbsy  c3timeout  
           tx     rx      in    err    g_eof  shrt   long   eof     out   c3    fail    sync   sig                  tx    rx  
      21:   3.9g   4.1g   0      0      0      0      0      0      0      2.0k  27      0     27      0      0      0    140 
  • Possible performance impact on clients

 

 

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