AirPort Management Utility 1.0: What‘s the meaning of my base station status?

AirPort Management Utility (AMU) reports the status of a list of known base stations. There are three common status messages: Unknown, Normal, and Offline.
Unknown
Normally, this only appears for a few seconds while the application gets the status information from the base station.

Normal
If the base station can be reached via TCP/IP, it is queried for name, contact, and description. "Normal" appears if the queried values are returned correctly.

Offline
This means the base station cannot be reached at the specified IP address.
Published Date: Oct 7, 2016