Method and apparatus for synchronizing different communication ports

A non-transitory computer-readable storage medium storing instructions of a computer program for implementing a method of synchronization of a communication device comprising a first and second communication ports, each of the first and second communication port being associated with a respective first and second time system, the method comprising:

• a regular master synchronization process synchronizing regularly the first time system with an external synchronization server according to a time synchronization protocol;
• a regular slave synchronization process synchronizing regularly the second time system with the first-time system;
• detecting a loss of synchronization between the first and the second time system due to a link failure;
• determining which of the first and the second time system is desynchronized,
• wherein when it is determined that the first time system is desynchronized, then the first time system is synchronized with the second time system and when it is determined that the second time system is desynchronized, then the second time system is synchronized with the first time system.

A communication device comprising a first and second communication ports, each of the first and second communication port being associated with a respective first and second time system, the device comprising a hardware processor configured for:

• executing a regular master synchronization process synchronizing regularly the first time system with an external synchronization server according to a time synchronization protocol;
• executing a regular slave synchronization process synchronizing regularly the second time system with the first-time system;
• detecting a loss of synchronization between the first and the second time system due to a link failure;
• determining which of the first and the second time system is desynchronized,
• wherein when it is determined that the first time system is desynchronized, then the first time system is synchronized with the second time system and when it is determined that the second time system is desynchronized, then the second time system is synchronized with the first time system.