Data access method and apparatus, chip and computer storage medium

A chip, comprising:

• a storage unit, configured for storing one or more programs;
• and
• a processing unit, configured for executing the one or more programs to perform a data forwarding method for an Optical Transport Network (OTN), comprising:
• determining, according to a data switching request, an interface to be switched off and a target interface to be switched to, wherein the interface to be switched off and the target interface to be switched to send same data and comprise a same number of data ports;
• determining a data port to be switched off in the interface to be switched off and a target data port corresponding to the data port to be switched off in the target interface to be switched to by port polling;
• for each data port to be switched off and the corresponding target data port, in response to a detection that the data port to be switched off and the target data port reach respective timestamp jumping points, obtaining data from a second storage device;
• and
• forwarding the data to the OTN until switching of all data ports to be switched off in the interface to be switched off is completed, wherein the second storage device is configured to store data to be switched in the target data port.

A computer non-transitory computer-readable storage medium, storing a computer program which, when executed by a processing unit, causes the processing unit to perform a data forwarding method for an Optical Transport Network (OTN), comprising:

• determining, according to a data switching request, an interface to be switched off and a target interface to be switched to, wherein the interface to be switched off and the target interface to be switched to send same data and comprise a same number of data ports;
• determining a data port to be switched off in the interface to be switched off and a target data port corresponding to the data port to be switched off in the target interface to be switched to by port polling;
• for each data port to be switched off and the corresponding target data port, in response to a detection that the data port to be switched off and the target data port reach respective timestamp jumping points, obtaining data from a second storage device;
• and
• forwarding the data to the OTN until switching of all data ports to be switched off in the interface to be switched off is completed, wherein the second storage device is configured to store data to be switched in the target data port.