Secure Boot

The status of the boot image verification can be monitored in the operating system.

Switch Engine

The Trusted Delivery field in the output of the show switch and show system commands in Switch Engine displays the status of the boot image verification. For example:

5520-24X-EXOS.2 # sh switch
SysName:          5520-24X-EXOS
SysLocation:
SysContact:       https://www.extremenetworks.com/support/
System MAC:       00:04:96:F2:F8:00
System Type:      5520-24X-EXOS
SysHealth check:  Enabled (Normal)
Recovery Mode:    All
System Watchdog:  Enabled
Trusted Delivery: Boot Image Verified
Current Time:     Mon Jul 27 19:35:03 2020
Timezone:         [Auto DST Disabled] GMT Offset: 0 minutes, name is UTC.
Boot Time:        Mon Jul 27 19:31:50 2020

Trusted delivery can only be in one of two states:

Boot Image Verified
Boot Image Verification Failed

Secure Boot Troubleshooting

When there is a secure boot validation failure, the switch is booted to a recovery stage or halts. Contact GTAC for assistance with recovering the switch.