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MAC IDs flapping due incorrect IFGRP mode

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Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

  • ONTAP 9
  • Interface Group (IFGRP)

Issue

  • When connectivity between the data switches and the Storage server was enabled, MAC IDs start flopping with messages like:
33533863: 37327259: Sep 29 00:00:00 EDT: %C4K_EBM-4-HOSTFLAPPING: Host xx:xx:xx:xx:xx:xx in vlan xx is moving from port Gi8/8 to port Po1
33533864: 37327260: Sep 29 00:00:00 EDT: %C4K_EBM-4-HOSTFLAPPING: Host xx:xx:xx:xx:xx:xx in vlan xx is moving from port Po1 to port Gi8/7
33533865: 37327261: Sep 29 00:00:00 EDT: %C4K_EBM-4-HOSTFLAPPING: Host xx:xx:xx:xx:xx:xx in vlan xx is moving from port Po1 to port Gi8/8
  • The NetApp ports connected to the switches are part of an IFGRP
  • IFGRP is configured as multimode
  • On the switch side, port aggregation is not configured

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