The disclosure provides a method for determining a configuration mismatch between a first device and a second device. During operation, a first device receives a plurality of Unidirectional Link Detection (UDLD) protocol messages from a second device. The first device is configured with a first interval configuration value corresponding to a frequency which the first device sends the UDLD protocol messages to the second device. The first device determines a second interval configuration value of the second device, which corresponds to a frequency which the second device sends the UDLD protocol messages to the first device. The first device determines that there is a configuration mismatch between the first device and the second device, and creates a log entry for the configuration mismatch, the log entry including the first and second interval configuration values.