Abstract: This application discloses a packet processing method including: receiving a first packet that includes a DA field and an SRH, where the DA field includes at least one C-SID that is sequentially arranged; determining, depending on whether another C-SID is further included after a first C-SID corresponding to the first node in the at least one C-SID, whether a first processing flavor corresponding to the first C-SID indicates a movement operation or a replacement operation; and if the first processing flavor indicates a movement operation, moving a target field that is after the first C-SID and that is in the DA field, to enable the target field to cover the first C-SID in the DA field; or if the first processing flavor indicates a replacement operation, replacing the first C-SID in the DA field with a second C-SID in the SRH.

Abstract: A data processing method, a packet sending method, and an apparatus. The data processing method includes: a first device obtains a first periodicity parameter and a second periodicity parameter, where the first periodicity parameter is determined based on duration of transmitting a packet from a first network device to a second network device along a first path, and the second periodicity parameter is determined based on duration of transmitting a packet from the first network device to the second network device along a second path; and the first device determines a third periodicity parameter based on the first periodicity parameter and the second periodicity parameter, where the third periodicity parameter reflects a quantity of periodicities between a periodicity in which the first network device sends a data packet and a periodicity in which the second network device forwards the data packet.