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What the BMC does

The BMC command line interface (CLI) commands enable you to remotely access and administer the storage system and diagnose error conditions. Also, the BMC extends AutoSupport capabilities by sending alerts and notifications through an AutoSupport message.

The BMC provides the following remote management capabilities for the storage system. You use the BMC CLI commands to perform the following tasks:
  • Administer the storage system using the Data ONTAP CLI by using the BMC’s system console redirection feature
  • Access the storage system and diagnose error conditions, even if the storage system has failed, by performing the following tasks:
    • View the storage system console messages, captured in the BMC's system console log
    • View storage system events, captured in the BMC's System Event Log
    • Initiate a storage system core dump
    • Power-cycle the storage system (or turn it on or off)
  • Monitor environmental and non-environmental sensors for the controller module and the NVMEM battery.
  • Switch between the primary and the backup firmware hubs to assist in bootup and recovery from a corrupted image in the storage system’s primary firmware hub.

The BMC extends AutoSupport capabilities by sending alerts and “down system” or “down filer” notifications through an AutoSupport message when the storage system goes down, regardless of whether the storage system can send AutoSupport messages. Other than generating these messages on behalf of a system that is down, and attaching additional diagnostic information to AutoSupport messages, the BMC has no effect on the storage system’s AutoSupport functionality. The system’s AutoSupport behavior is the same as it would be without BMC installed. The AutoSupport configuration settings and message content behavior of the BMC are inherited from Data ONTAP.

The BMC supports the SSH protocol for CLI access from UNIX clients and PuTTY for CLI access from PC clients. Telnet and RSH are not supported. These protocols are not available on the BMC, and system options to enable or disable them have no effect on the BMC.

Note: The BMC ignores the ssh.idle.timeout option and the console.timeout option. The settings for these options do not have any effect on the BMC.