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How to perform a cluster port loopback test for 2-node switchless clusters

Last Updated:

Applies to

  • FAS2520
  • FAS2552/2554 
  • FAS/AFF 8020/8040/8060/8080
  • FAS2620         
  • FAS2650/AFF-A200
  • FAS2720
  • FAS2750/AFF-A220
  • FAS8200/AFF-A300
  • FAS8300/AFF-A400
  • 2-node Switchless Cluster (TNSC)


This procedure is used to determine which motherboard is at fault for a 2-node switchless cluster that uses the on-board e0a/e0b ports when one or both of the cluster ports are flapping. For the purposes of the examples, the nodes will be Node_01 and Node_02.

Note that for nodes that do not use e0a/e0b for their cluster ports, the following procedure will need to be modified accordingly to refer to the correct in-use cluster ports on the respective nodes and available test ports as shown in the provided table.


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