Automating software validation of a GPON network

This paper presents the automation of a Gigabit Passive Optical Network (GPON) embedded software validation, which improves the coverage of tests and eliminates faults that may compromise system availability. A fault injection (FI) campaign based on a state machine model was performed emulating physical faults that automatically break down the communication between GPON network devices. Consequently, new failures were disclosed even after one-and-a-half year period using conventional test techniques.