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ClusterIfIslDownWarn_Alert for MCC IP ISL port

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Category:
fabric-interconnect-and-management-switches
Specialty:
MetroCluster
Last Updated:

Applies to

Issue

  • Each side of the MCC IP, reporting weekly Cluster Switch Health Alerts. Example: 
[node_name-A-01: mgwd: callhome.hm.alert.major:alert]: Call home for Health Monitor process cshm: ClusterIfIslDownWarn_Alert[switch1-sideA(FDO0123456AB)/Ethernet1/16].
 
[node_name-B-01: mgwd: callhome.hm.alert.major:alert]: Call home for Health Monitor process cshm: ClusterIfIslDownWarn_Alert[switch1-sideB(FDO3456789AC)/Ethernet1/16].
  • System health alert show output example:
Monitor ethernet-switch
Alert ID ClusterIfIslDownWarn_Alert
Alerting Resource switch1-sideA(FDO0123456AB)/Ethernet1/16
Subsystem Switch-Health
Perceived Severity Major
Probable Cause Cable_tamper
Description The cable used to connect switch "switch1-sideA(FDO0123456AB)/Ethernet1/16" to the ISL port might be faulty. For the port-channel, please check each individual link.
  • Both switches reporting Link not connected, for that port. Example:
switch1-sideA# show interface brief
Ethernet VLAN    Type Mode   Status  Reason                 Speed     Port Interface  Ch #
--------------------------------------------------------------------------------
Eth1/16  1       eth  trunk  down    Link not connected      auto(D)  10
 
switch1-sideB# show interface brief
Ethernet VLAN    Type Mode   Status  Reason                 Speed     Port Interface  Ch #
--------------------------------------------------------------------------------
Eth1/16  1       eth  trunk  down    Link not connected       auto(D) 10
  • The issue remains after the QSFPs re-seated
  • The issue remains after the cables been replaced

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