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Is disruptive changing the LIF's netmask?

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Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

  • ONTAP 9
  • Networking
  • CIFS
  • NFS

Answer

  • Regardless of whether the customer is using CIFS or NFS, changing the LIF's netmask  can potentially cause disruption to clients.
  • It depends on how the network and clients are configured.

Additional Information

  • If there are any clients or devices within the current subnet range /26 that have IP addresses outside the new subnet range /25, they may experience connectivity issues until their IP addresses are updated to fall within the new subnet range.
  • Clients that have IP addresses within the new subnet range should not be affected.
  • Below points to be considered:
    • How users are accessing the shares, is it via FQDN or IP ?
    • If users are accessing via FQDN, then that FQDN is pointing to how many IPs?
    •  If it points to multiple IPs, then remove the older which will be modified from the DNS and add the new IP to the DNS
NOTE:
  • Before making any changes, it's highly recommended to plan a maintenance window and communicate with affected clients to minimize disruption.
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