Thursday, 27 February 2014

IOS in-flight upgrade on ASA failover pair


IOS in-flight upgrade on ASA failover pair


  1. Copy new OS to flash on both primary and secondary
  2. Force primary to be active and reload the standby/secondary
  3. After back up, force standby/secondary to active status
  4. Reload primary which is currently in standby status
  5. After back up, restore active status to desired unit (s)


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