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How ARP Snapshot parameters behave based on the Attack Probability status?

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Applies to

Answer

  • Beginning with ONTAP 9.11.1 multiple parameters can control the ARP snapshot existence.
ontap911::> options arw*
arw.snap.create.interval.hours    4
arw.snap.create.interval.hours.post.max.count  8
arw.snap.max.count                6
arw.snap.max.retain.interval.days  5
arw.snap.new.extns.interval.hours  48
arw.snap.normal.retain.interval.hours  48
arw.snap.surge.interval.days      5
  • Above highlighted parameters behave dependent on attack probability.
  • If the attack probability is moderate , ARP snapshots will not be deleted based on these settings until the attack is resolved and the probability drops to none
  • For a detailed explanation of the logic, please refer directly to Understanding ARP snapshot protection and attack detection 

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