Detecting if the switch is not ready for a failover event

This task describes using the switch LEDs to detect if the switch is not ready for the loss of a fabric module or for a failover from the active management module to the standby management module.

NOTE:

Although you can detect power supply failures by viewing the LEDs, you must use software commands to determine if the power supply redundancy is sufficient to power the chassis if a power supply fails.

Procedure
  1. Detect if the standby management module is shut down.

    If the standby management module is shut down, the LED states are as follows:

    • The standby management module health LED is Off.

    • The standby management state active (Actv) LED is Off.

    • The standby management state standby (Stby) LED is Off.

    • On the active management module in the Status Front Management Modules section, the LED for the standby management module is Off. For example, if the active management module is Management Module LED 5, Management Modules LED 6 is Off.

  2. Detect if the standby management module is in a transient state.

    If the standby management module is booting, updating, or in another transient state, the LED states are as follows:

    • The standby management module health LED is Slow Flash Green when the service operating system is running or during an operating system update.

    • The standby management module Booting LED is Slow Flash Green when the ArubaOS-CX operating system is booting.

    • The standby management state active (Actv) LED is Off.

    • The standby management state standby (Stby) LED is Off.

    • On the active management module in the Status Front Management Modules section, the LED for the standby management module is Slow Flash Green.

  3. Detect if a fabric module is shut down or not present.

    If a fabric module is shut down or not present, the LED states are as follows:

    • On the active management module, in the Status Rear section, the LED for the fabric module is Off.

    • On the rear display module, the LED for the fabric module is Off.

    • On the fabric module, the health LED is Off. However, the fabric module is behind fan 1 and is not directly visible.