The earliest recollection of this bug is traced back to PAN-OS 11.0.3 - November 18, 2024. This bug is fixed in PAN-OS versions 11.0.3. Fixed an issue where the slot-1 data processor showed the status as down during an SNMP query. For more information: https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-release-notes/pan-os-11-0-3-known-and-addressed-issues/pan-os-11-0-3-addressed-issues