Error message: "Warning-Missing HA peer serial number"
12224
Created On 08/28/21 01:21 AM - Last Modified 03/12/22 05:05 AM
Symptom
After upgrade to Panorama in HA to PAN-OS 10.0 release, the following warning message appears on the active Panorama device.
"Warning-Missing HA peer serial number"
Environment
- Any Panorama.
- High-Availability(HA) configured.
- PAN-OS 10.0 and above.
Cause
New feature introduced in PAN-OS 10 requires the Peer HA serial number to be entered when HA is configured on Panorama. Refer to Changes To the Default Behavior.
Resolution
- Enter the Panorama HA peer serial number to reduce your attack surface against brute force attacks on the Panorama IP as documented in Step 2.4.
- Commit the configuration.
Note: This is optional. Although the warning message is seen, the commit process is not blocked.
- You can either ignore the message or add the serial numbers in the High Availability section to stop receiving the warning. Here is how you add the serial number.
GUI: Panorama > High-Availability > Setup, then add peer serial number for both Panorama devices.