Clock transmission method and related device

An optical transport network (OTN) device, comprising:

• a memory, configured to store computer-executable program code;
• and
• at least one processor, coupled to the memory, wherein
• the program code comprises one or more instructions, and when executed by the at least one processor, the one or more instructions cause the at least one processor to perform the following:
• obtaining a first optical channel data unit (ODU) container;
• performing phase discrimination on an obtained first clock and a first ODU clock of the OTN device, to generate a first phase discrimination (PD) value;
• inserting the first PD value into an overhead of the first ODU container;
• encapsulating the first ODU container into a second ODU container, wherein a rate of the second ODU container is higher than a rate of the first ODU container;
• and
• sending the second ODU container.

An optical transport network (OTN) device, comprising:

• a memory, configured to store computer-executable program code;
• and
• at least one processor, coupled to the memory, wherein
• the program code comprises one or more instructions, and when executed by the at least one processor, the one or more instruction cause the at lease one processor to perform the following:
• receiving a second optical channel data unit (ODU) container;
• obtaining a second ODU clock of the second ODU container;
• performing phase discrimination on the second ODU clock and a second clock of the OTN device, to generate a fourth phase discrimination (PD) value;
• performing a difference calculation on the fourth PD value and a third PD value borne in the second ODU container, to obtain a fifth PD value, wherein the third PD value is obtained after a difference calculation is performed on a first PD value and a second PD value, the second PD value is generated after phase discrimination is performed on a first ODU clock and the second ODU clock, the first PD value is obtained after phase discrimination is performed on a first clock and the first ODU clock, the first ODU clock is an ODU clock of a generation end of the first PD value, and the first clock is obtained by the generation end;
• and
• adjusting the second clock as the first clock based on the fifth PD value, and output the first clock.