Optical power value transmission method and system, and related device

An optical power value transmission method, wherein the method comprises:

• receiving, by a network device, a second output power value from an upstream network device by a second optical fiber, wherein the second output power value is a power value of an optical signal, and is obtained on an output port of the upstream network device, and the second optical fiber is connected between an input port of the network device and the upstream network device;
• determining, by the network device based on the input port and optical multiplexing section link information, that the network device is a target network device indicated by the optical multiplexing section link information, wherein the optical multiplexing section link information is useable to indicate an optical fiber connection relationship between two adjacent network devices between a source network device and the target network device, an optical multiplexing section comprises the two adjacent network devices, the source network device and the target network device, and the source network device and the target network device are located in different data communication networks (DCN);
• and
• obtaining, by the network device on the input port, an input power value of the optical signal, wherein the receiving, by the network device, the second output power value from the upstream network device by the second optical fiber comprises:
• receiving, by the network device, a second optical supervisory channel (OSC) by the second optical fiber, wherein the second OSC includes a data frame that occupies a target bandwidth of the second OSC, and the data frame includes the second output power value, and the target bandwidth fails to be occupied by a DCN channel.

A network device, comprising:

• a processor,
• a non-transitory memory, and
• a transmitter, wherein
• the non-transitory memory, the processor and the transmitter are connected together, the non-transitory memory is configured to store non-transitory instructions, and in response to the non-transitory instructions being executed by the processor, cause the network device to perform operations comprising:
• obtain optical multiplexing section link information, wherein the optical multiplexing section link information is useable to indicate an optical fiber connection relationship between two adjacent network devices between the source network device and a target network device, an optical multiplexing section comprises the two adjacent network devices, the source network device and the target network device, and the source network device and the target network device are located in different data communication networks (DCN);
• determine a first output port of the source network device based on the optical multiplexing section link information, wherein the first output port is connected to a downstream network device by a first optical fiber, and the downstream network device is connected to the source network device, and is indicated by the optical multiplexing section link information;
• obtain, on the first output port, a first output power value of an optical signal;
• and
• send the first output power value to the downstream network device by the first optical fiber, wherein in response to the non-transitory instructions being executed by the processor, that cause the network device to send the first output power value to the downstream network device by the first optical fiber comprises the processor being further configured to execute the non-transitory instructions that further cause the network device to perform operations further comprising:
• send a first optical supervisory channel (OSC) by the first optical fiber, wherein the first OSC includes a data frame that occupies a target bandwidth of the first OSC, and the data frame includes the first output power value, and the target bandwidth fails to be occupied by a DCN channel.