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PowerScale OneFS 9.8.0.0 Web Administration Guide

Enable duplicate address detection (DAD)

You can configure OneFS to perform IPv6 DAD globally on the cluster. Separate configurations are required to enable DAD on Smartconnect Service IPs and on network pools.

Enable IPv6.

  1. Enable IPv6 if it is not already enabled.
    isi network external modify --ipv6-enabled true
  2. Enable DAD on the cluster.
    The following command enables DAD and specifies a DAD timeout value of 4 seconds. With this configuration, OneFS looks for duplicate addresses for 4 seconds before accepting connections on the IP.
    isi network external modify --ipv6-dad 4
    To enable DAD without a timeout, run the following command:
    isi network external modify --ipv6-dad enabled
    NOTE: Enabling DAD without specifying a timeout results in using the default timeout, which is 5 seconds.
  3. Optionally enable DAD on Smartconnect Service IPs.
    isi network external modify  --ipv6-ssip-perform-dad true
    NOTE:DAD must also be enabled on the cluster, as defined in step 2.
  4. Optionally enable DAD on a network pool.
    isi network pools modify groupnet0.subnet0.pool0  --ipv6-perform-dad true
    NOTE:DAD must also be enabled on the cluster, as defined in step 2.

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