The chassis process (chassisd) could not obtain a media access control (MAC) address for the indicated fabric interface because of an internal error.
When a MAC address initialization failed for a fabric interface, it writes a message similar to the following:
CHASSISD_MAC_ADDRESS_FABRIC_ERR: Unable to allocate MAC address for fabric interface <device-id>
A failure has occurred and the MAC address initialization has failed for the fabric interface.
Examine the following output to help determine the cause of this message:
show log messages
show log chassisd
The device ID is identified in the error message.
Look for any related events that occurred at or just before the CHASSISD_MAC_ADDRESS_FABRIC_ERR message that may have contributed to this.