Packet transmission method and apparatus, device, and storage medium

A non-transitory computer-readable storage medium, wherein the storage medium stores at least one instruction, and the at least one instruction is loaded and executed by a processor, to enable a computer to:

• in response to determining that a second slave port of a network device is invalid or the second slave port does not exist, obtain, by a second master port of the network device, a second dataset by modifying a first dataset that comprises a timestamp carried in a first clock packet sent by a third master port and received by a first slave port and data generated by the first slave port based on the first clock packet, wherein the first slave port belongs to a first clock domain, and the second master port belongs to a second clock domain that has a different domainNumber from the first clock domain;
• and
• send a second clock packet based on the second dataset through the second master port, wherein a timestamp carried in the second clock packet is the timestamp carried in the first clock packet, and the first clock packet and the second clock packet each comprises a synchronization sync packet or a follow-up packet in a precision time protocol.