Packet transmission method and apparatus, device, and storage medium
This application discloses a packet transmission method and apparatus, a device, and a storage medium, and relates to the field of communication technologies. The method includes: in response to that a second slave port of a network device is invalid or the second slave port does not exist, a second master port of the network device obtains a second dataset, where the second dataset is obtained by modifying a first dataset, and the first dataset includes a timestamp carried in a first clock packet received by a first slave port and data generated by the first slave port based on the first clock packet. The network device sends a second clock packet based on the second dataset through the second master port, where a timestamp carried in the second clock packet is the timestamp carried in the first clock packet.
1 . A packet transmission method, wherein the method comprises:
in response to determining that a second slave port of a network device is invalid or the second slave port does not exist, obtaining, 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
sending, by the network device, 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.
2 . The method according to claim 1 , wherein the obtaining the second dataset further comprises:
receiving, by the second master port, the first dataset; and
modifying the first dataset based on information about the second clock domain to obtain the second dataset.
3 . The method according to claim 2 , wherein the first dataset comprises a domainNumber, the modifying further comprising:
modifying a value of the domain Number of the first dataset to a domainNumber of the second clock domain.
4 . The method according to claim 2 , wherein the first dataset comprises a domain name, a local port number, a synchronization receipt time, a source port identity, and a log message interval, the modifying further comprising:
modifying a value of the domain name of the first dataset to a domain name of the second clock domain;
modifying a value of the local port number to a first value;
modifying a value of the synchronization receipt time to a second value;
modifying a clock identity in the source port identity to a clock identity of the second clock domain;
modifying a port number in the source port identity to a third value; and
modifying the log message interval to a time interval at which a ClockMaster of the second clock domain sends a packet.
5 . The method according to claim 1 , wherein an interworking function (IWF) is comprised between the second master port and the first slave port, the method further comprising:
modifying, by the IWF, the first dataset based on information about the second clock domain to obtain the second dataset; and
receiving, by the second master port, the second dataset sent by the IWF.
6 . The method according to claim 1 , wherein the network device comprises a second switch, the method further comprising:
obtaining, by the second master port, the second dataset based on control of the second switch and the first dataset corresponding to the first slave port.
7 . The method according to claim 6 , wherein the network device further comprises a first switch, and a first master port belongs to the first clock domain, the method further comprising:
in response to determining that the first slave port exists and is valid, sending, by the first master port, a fourth clock packet based on control of the first switch and the first dataset corresponding to the first slave port, wherein the fourth clock packet comprises a sync packet or a follow_up packet in the precision time protocol; and
in response to determining that the first slave port is invalid or the first slave port does not exist, and the second slave port exists and is valid, sending, by the first master port, a fifth clock packet based on a control of the first switch and a third dataset corresponding to the second slave port, wherein the fifth clock packet comprises a sync packet or a follow_up packet in the precision time protocol.
8 . The method according to claim 1 , wherein the network device comprises a second switch, the method further comprising:
in response to determining that the second slave port exists and is valid, and the second slave port belongs to the second clock domain, sending, by the second master port, a third clock packet based on a control of the second switch and a third dataset corresponding to the second slave port, wherein the third clock packet comprises a sync packet or a follow_up packet in the precision time protocol.
9 . The method according to claim 1 , wherein before the obtaining, the method further comprises:
receiving, by the first slave port, the first clock packet sent by the third master port, wherein the third master port corresponds to the first clock domain of a clock source device of the network device;
obtaining, based on the received first clock packet, the data generated based on the first clock packet; and
generating the first dataset based on the timestamp carried in the first clock packet and the data generated based on the first clock packet.
10 . A packet transmission apparatus, comprising:
a processor;
a memory storing program instructions, which, when executed by the processor, cause the apparatus 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.
11 . The apparatus according to claim 10 , wherein the program instructions further cause the apparatus to:
receive, by the second master port, the first dataset; and
modify the first dataset based on information about the second clock domain, to obtain the second dataset.
12 . The apparatus according to claim 11 , wherein the first dataset comprises a domainNumber, and wherein the apparatus is further configured to:
modify a value of the domain Number of the first dataset to a domainNumber of the second clock domain of the network device.
13 . The apparatus according to claim 11 , wherein the first dataset comprises a domain name, a local port number, a synchronization receipt time, a source port identity, and a log message interval; and the apparatus is further configured to:
modify a value of the domain name of the first dataset to a domain name of the second clock domain;
modify a value of the local port number to a first value;
modify a value of the synchronization receipt time to a second value;
modify a clock identity in the source port identity to a clock identity of the second clock domain;
modify a port number in the source port identity to a third value; and
modify the log message interval to a time interval at which a ClockMaster of the second clock domain sends a packet.
14 . The apparatus according to claim 10 , wherein an interworking function (IWF) is comprised between the second master port and the first slave port, the apparatus further configured to:
modify, by the IWF, the first dataset based on information about the second clock domain to obtain the second dataset; and
receive, by the second master port, the second dataset sent by the IWF.
15 . The apparatus according to claim 10 , wherein the network device comprises a second switch; and wherein the apparatus is further configured to:
obtain, by the second master port, the second dataset based on control of the second switch and the first dataset corresponding to the first slave port.
16 . The apparatus according to claim 15 , wherein the network device further comprises a first switch, a first master port belongs to the first clock domain, and wherein the apparatus is further configured to:
in response to determining that the first slave port exists and is valid, send, by the first master port, a fourth clock packet based on control of the first switch and the first dataset corresponding to the first slave port, wherein the fourth clock packet comprises a sync packet or a follow_up packet in the precision time protocol; and
in response to determining that the first slave port is invalid or the first slave port does not exist, and the second slave port exists and is valid, send, by the first master port, a fifth clock packet based on a control of the first switch and a third dataset corresponding to the second slave port, wherein the fifth clock packet comprises a sync packet or a follow_up packet in the precision time protocol.
17 . The apparatus according to claim 10 , wherein the network device comprises a second switch, and wherein the apparatus is further configured to:
in response to determining that the second slave port exists and is valid, and the second slave port belongs to the second clock domain, send, by the second master port, a third clock packet based on a control of the second switch and a third dataset corresponding to the second slave port, wherein the third clock packet comprises a sync packet or a follow_up packet in the precision time protocol.
18 . The apparatus according to claim 10 , wherein the apparatus is further configured to:
receive, by the first slave port, the first clock packet sent by the third master port, wherein the third master port corresponds to the first clock domain of a clock source device of the network device;
obtain, based on the received first clock packet, the data generated based on the first clock packet; and
generate the first dataset based on the timestamp carried in the first clock packet and the data generated based on the first clock packet.
19 . 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.
20 . The non-transitory computer-readable storage medium of claim 19 , wherein the computer is further to:
receive, by the second master port, the first dataset; and
modify the first dataset based on information about the second clock domain to obtain the second dataset.