35.2.2.8.7 indicates that
“At the point when a Talker Advertise Declaration is transformed into a
Talker Failed Declaration, the Bridge making the transformation adds
information that indicates, to the Listeners registering the Talker Failed
Declaration, the cause of the failure, and the identity of the Bridge and
Bridge Port at which the failure occurred.”
No information is conveyed identifying the Bridge Port.
The "Bridge ID" (13.24.1) does not identify the port.
The Reservation Failure Code does not identify the port.