CN115695340A - Message forwarding method and device and electronic equipment - Google Patents
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Abstract
The invention provides a message forwarding method, a message forwarding device and electronic equipment, which relate to the technical field of communication networks, wherein the message forwarding method comprises the following steps: sending first strategy information to a head node of a message forwarding node, controlling the head node to copy a data message from the head node by using information corresponding to a plurality of message forwarding paths with the same tail node based on the first strategy information to obtain a redundant data message, and then sending the redundant data message to the tail node of the message forwarding node based on the plurality of message forwarding paths; and sending second strategy information to the tail node to control the tail node to deduplicate the redundant data message. The message forwarding method, the message forwarding device and the electronic equipment can provide reliable service with high certainty for a transmission link.
Description
Technical Field
The present invention relates to the field of communications network technologies, and in particular, to a method and an apparatus for forwarding a packet, and an electronic device.
Background
The SRv6 protocol provides a more flexible and efficient networking technology for the traditional private line service, and inserts a Segment Routing extension Header (SRH) containing a Segment ID (SID, segment ID) table into an IPv6 (i.e., version 6 of the internet protocol) message to implement the determined path forwarding, and can implement the service guarantee of bandwidth and delay through reasonable path planning and link resource reservation. With the spread of SRv6 technology in the industry vertical, high reliability, high availability is also considered a key requirement in the field of remote industrial automation. Although the active/standby link switching mechanism provided by the SRv6 protocol can provide a certain degree of reliability, it is difficult to provide a reliable service with high certainty because of any active/standby link switching delay. Therefore, there is a need to provide a method that can provide reliable services with a high degree of certainty for a transmission link.
Disclosure of Invention
The invention provides a message forwarding method, a message forwarding device and electronic equipment, which can provide reliable service with high certainty for a transmission link.
The invention provides a message forwarding method, which comprises the following steps:
sending first strategy information to a head node of a message forwarding node, controlling the head node to copy a data message from the head node by using information corresponding to a plurality of message forwarding paths with the same tail node based on the first strategy information to obtain a redundant data message, and then sending the redundant data message to the tail node of the message forwarding node based on the plurality of message forwarding paths;
and sending second strategy information to the tail node to control the tail node to deduplicate the redundant data message.
According to the message forwarding method provided by the invention, the message forwarding path is an SRv6 path, and the first policy information comprises indication information and information corresponding to a plurality of SRv6 paths with the same tail node;
the controlling, based on the first policy information, the head node to copy the data packet from the head node to obtain a redundant data packet by using information corresponding to multiple packet forwarding paths having the same tail node includes:
and controlling the head node to copy the data message from the head node according to the information corresponding to the plurality of SRv6 paths based on the indication information to obtain the redundant data message.
According to the packet forwarding method provided by the present invention, the controlling, based on the indication information, the head node to copy the data packet from the head node according to the information corresponding to the plurality of SRv6 paths to obtain the redundant data packet includes:
controlling the head node to copy the data message from the head node according to the number of SRv6 paths based on the indication information to obtain a plurality of data messages;
and adding a segment routing extension head of a segment ID table corresponding to the SRv6 path to each data message to obtain the redundant data message.
According to the message forwarding method provided by the invention, the total number of messages in the redundant data message is the same as the number of SRv6 paths in the first policy information.
According to the message forwarding method provided by the invention, each message forwarding path comprises at least two intermediate forwarding nodes, and each intermediate forwarding node is used for sending the redundant data message through a segment ID table or an IPv6 protocol.
According to the packet forwarding method provided by the present invention, the sending of the second policy information to the tail node to control the tail node to deduplicate the redundant data packet includes:
and sending second strategy information to the tail node to control the tail node to remove non-target data messages in the redundant data messages, wherein the target data messages are the data messages which arrive at the tail node first in the redundant data messages.
The invention also provides a message forwarding device, which comprises:
the first sending module is used for sending first strategy information to a head node of a message forwarding node, copying a data message from the head node to obtain a redundant data message by using information corresponding to a plurality of message forwarding paths with the same tail node based on the first strategy information, and sending the redundant data message to the tail node of the message forwarding node based on the plurality of message forwarding paths;
and the second sending module is used for sending second strategy information to the tail node so as to control the tail node to deduplicate the redundant data message.
The invention also provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the message forwarding method.
The present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a message forwarding method as described in any of the above.
The present invention also provides a computer program product comprising a computer program which, when executed by a processor, implements any of the message forwarding methods described above.
According to the message forwarding method, the message forwarding device and the electronic equipment, the first strategy information is sent to the head node of the message forwarding node, the head node is controlled to copy the data message by using information corresponding to a plurality of message forwarding paths with the same tail node to obtain a redundant data message, the redundant data message is sent to the tail node of the message forwarding node based on the plurality of message forwarding paths, and then the tail node is used for removing the duplicate of the redundant data message. When the first-choice path has a fault, the control head node can realize high reliability and high availability of the logic transmission link through the main-standby link switching mechanism under the condition of not changing the intermediate forwarding node.
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In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a message forwarding method provided in the present invention;
fig. 2 is a schematic diagram of a policy control node and a packet forwarding node according to the present invention;
fig. 3 is a schematic structural diagram of a packet forwarding apparatus provided in the present invention;
fig. 4 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following describes a message forwarding method, a message forwarding device, and an electronic device according to the present invention with reference to fig. 1 to 4.
As shown in fig. 1, the method for forwarding a packet provided by the present invention includes:
It can be understood that the method provided by the present invention is applied to the policy control node 210 shown in fig. 2, and the policy control node 210 sends the policy to the packet forwarding node to control the packet forwarding node to forward the data packet.
The packet forwarding node includes a head node 220, an intermediate forwarding node 240, and a tail node 230. In the packet forwarding node, the head node 220, the intermediate forwarding node 240, and the tail node 230 are sequentially connected in communication.
The redundant data message contains a plurality of same data messages.
It is understood that after the head node 220 sends the redundant data packets to the tail node 230, the tail node 230 removes the duplicate data packets from the redundant data packets, and only one of the same data packets is reserved.
In some embodiments, the packet forwarding path is an SRv6 (i.e., segment routing of IPv 6) path, and the first policy information includes indication information and information corresponding to multiple SRv6 paths having the same tail node 230;
the controlling, based on the first policy information, the head node 220 to copy the data packet from the head node 220 to obtain a redundant data packet by using information corresponding to multiple packet forwarding paths having the same tail node 230 includes:
and controlling the head node 220 to copy the data packet from the head node 220 according to the information corresponding to the plurality of SRv6 paths based on the indication information, so as to obtain the redundant data packet.
It is understood that the first policy information may include, in addition to the multiple SRv6 paths, indication information of whether redundant transmission is enabled for data packet transmission of the policy.
When the first policy information includes the indication information, the head node 220 may be controlled to perform data packet replication for redundant transmission of data packets.
When the policy sent by the policy control node 210 does not include the above-mentioned indication information, the head node 220 does not need to start redundant transmission, and the head node 220 directly sends the received data packet to the tail node 230 after receiving the data packet sent by the policy control node 210.
Further, the first policy information further includes a screening condition, and the control head node 220 screens out, based on the screening condition, a data packet meeting the screening condition from the data packet received by the head node 220, and copies the data packet to implement redundant transmission.
In some embodiments, the controlling, based on the indication information, the head node 220 to copy the data packet from the head node 220 according to the information corresponding to the multiple SRv6 paths to obtain the redundant data packet includes:
controlling the head node 220 to copy the data messages from the head node 220 according to the number of SRv6 paths based on the indication information to obtain a plurality of data messages;
and adding a Segment Routing extension Header (SRH) of a Segment ID (namely, an identity identification number) table corresponding to the SRv6 path to each data message to obtain the redundant data message.
It is understood that the Segment ID table is also a SID (i.e., segment ID) table; the first policy information includes a plurality of SRv6 paths having the same end node 230, and the number of SRv6 paths can be determined based on information corresponding to the SRv6 paths in the first policy information.
And after the data message copying is finished, marking a segment routing extension head of a segment ID table corresponding to the SRv6 path in the first strategy information for each data message to obtain redundant data messages.
In some embodiments, the total number of packets in the redundant data packet is the same as the number of SRv6 paths in the first policy information.
It can be understood that the head node 220 duplicates the data packet that meets the filtering condition in the first policy information, and the quantity of the duplicated duplicates is equal to the quantity of the SRv6 paths in the first policy information issued by the policy control node 210 minus one, that is, the quantity of the duplicated data packet is equal to the quantity of the SRv6 paths in the first policy information.
In some embodiments of the present invention, the,
each packet forwarding path includes at least two intermediate forwarding nodes 240, and each intermediate forwarding node 240 is configured to send the redundant data packet through a segment ID table or an IPv6 protocol.
It is understood that the packet forwarding node includes multiple sets of intermediate forwarding nodes 240, and the number of each set of intermediate forwarding nodes 240 is 1 or more. Each set of intermediate forwarding nodes 240 corresponds to one SRv6 path.
The intermediate forwarding node 240 supports the SRv6 protocol or supports only the IPv6 protocol. If the intermediate forwarding node 240 supports the SRv6 protocol, the intermediate forwarding node 240 forwards the redundant data packet to the tail node 230 according to the indication of the SID label in the segment routing extension header; if the intermediate forwarding node 240 only supports the IPv6 protocol, the intermediate forwarding node 240 forwards the redundant data packet to the tail node 230 according to the IPv6 protocol.
In some embodiments, the sending the second policy information to the tail node 230 to control the tail node 230 to deduplicate the redundant data packet includes:
sending second policy information to the tail node 230 to control the tail node 230 to remove non-target data packets in the redundant data packets, where a target data packet is a data packet that first arrives at the tail node 230 in the redundant data packets.
It can be understood that, when the tail node 230 receives the second policy information issued by the policy control node 210, the deduplication is performed on all redundant data packets from the target head node 220. Specifically, the tail node 230 directly strips off the segment routing extension header according to the indication of the local segment ID table, and forwards the data packet that arrives first. When other data messages arrive, the discarding action is executed, and the data messages are not forwarded.
Furthermore, the same message in the redundant data message can be identified based on the hash operation identification, the unique identification and other modes, and the non-target data message in the same data message is removed after the same data message is identified.
In summary, the message forwarding method provided by the present invention includes: sending first strategy information to a head node of a message forwarding node, copying a data message from the head node to obtain a redundant data message by using information corresponding to a plurality of message forwarding paths with the same tail node based on the first strategy information, and sending the redundant data message to the tail node of the message forwarding node based on the plurality of message forwarding paths; and sending second strategy information to the tail node to control the tail node to deduplicate the redundant data message.
In the message forwarding method provided by the invention, the first strategy information is sent to the head node of the message forwarding node, the head node is controlled to copy the data message by using the information corresponding to the plurality of message forwarding paths with the same tail node to obtain the redundant data message, the redundant data message is sent to the tail node of the message forwarding node based on the plurality of message forwarding paths, and then the tail node is used for carrying out duplicate removal on the redundant data message. When the first-selected path fails, the control head node can realize high reliability and high availability of the logic transmission link through the main/standby link switching mechanism under the condition of not changing the intermediate forwarding node.
The following describes the message forwarding apparatus provided in the present invention, and the message forwarding apparatus described below and the message forwarding method described above may be referred to correspondingly.
As shown in fig. 3, the present invention further provides a message forwarding apparatus 300, including:
a first sending module 310, configured to send first policy information to a head node of a packet forwarding node, control the head node to copy a data packet from the head node to obtain a redundant data packet by using information corresponding to multiple packet forwarding paths having the same tail node based on the first policy information, and send the redundant data packet to the tail node of the packet forwarding node based on the multiple packet forwarding paths;
a second sending module 320, configured to send second policy information to the tail node, so as to control the tail node to deduplicate the redundant data packet.
The electronic device, the computer program product, and the storage medium provided in the present invention are described below, and the electronic device, the computer program product, and the storage medium described below may be referred to in correspondence with the above-described message forwarding method.
Fig. 4 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 4: a processor (processor) 410, a communication Interface 420, a memory (memory) 430 and a communication bus 440, wherein the processor 410, the communication Interface 420 and the memory 430 are communicated with each other via the communication bus 440. The processor 410 may invoke logic instructions in the memory 430 to perform a message forwarding method comprising:
sending first strategy information to a head node of a message forwarding node, copying a data message from the head node to obtain a redundant data message by using information corresponding to a plurality of message forwarding paths with the same tail node based on the first strategy information, and sending the redundant data message to the tail node of the message forwarding node based on the plurality of message forwarding paths;
and sending second strategy information to the tail node to control the tail node to deduplicate the redundant data message.
In addition, the logic instructions in the memory 430 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention or a part thereof which substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, where the computer program product includes a computer program, the computer program can be stored on a non-transitory computer readable storage medium, and when the computer program is executed by a processor, a computer can execute the message forwarding method provided by the above methods, and the method includes:
sending first strategy information to a head node of a message forwarding node, copying a data message from the head node to obtain a redundant data message by using information corresponding to a plurality of message forwarding paths with the same tail node based on the first strategy information, and sending the redundant data message to the tail node of the message forwarding node based on the plurality of message forwarding paths;
and sending second strategy information to the tail node to control the tail node to deduplicate the redundant data message.
In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, the computer program being implemented by a processor to execute the message forwarding method provided by the above methods, the method including:
sending first strategy information to a head node of a message forwarding node, controlling the head node to copy a data message from the head node by using information corresponding to a plurality of message forwarding paths with the same tail node based on the first strategy information to obtain a redundant data message, and then sending the redundant data message to the tail node of the message forwarding node based on the plurality of message forwarding paths;
and sending second strategy information to the tail node to control the tail node to deduplicate the redundant data message.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on the understanding, the above technical solutions substantially or otherwise contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A message forwarding method is characterized by comprising the following steps:
sending first strategy information to a head node of a message forwarding node, copying a data message from the head node to obtain a redundant data message by using information corresponding to a plurality of message forwarding paths with the same tail node based on the first strategy information, and sending the redundant data message to the tail node of the message forwarding node based on the plurality of message forwarding paths;
and sending second strategy information to the tail node to control the tail node to deduplicate the redundant data message.
2. The message forwarding method according to claim 1, wherein the message forwarding path is an SRv6 path, and the first policy information includes indication information and information corresponding to multiple SRv6 paths having the same tail node;
the controlling, based on the first policy information, the head node to copy the data packet from the head node to obtain a redundant data packet by using information corresponding to a plurality of packet forwarding paths having the same tail node includes:
and controlling the head node to copy the data message from the head node according to the information corresponding to the plurality of SRv6 paths based on the indication information to obtain the redundant data message.
3. The message forwarding method according to claim 2, wherein the controlling, based on the indication information, the head node to copy the data message from the head node according to the information corresponding to the plurality of SRv6 paths to obtain the redundant data message comprises:
controlling the head node to copy the data message from the head node according to the number of SRv6 paths based on the indication information to obtain a plurality of data messages;
and adding a segment routing extension head of a segment ID table corresponding to the SRv6 path on each data message to obtain the redundant data message.
4. The packet forwarding method according to claim 3, wherein the total number of packets in the redundant packet is the same as the number of SRv6 paths in the first policy information.
5. The packet forwarding method according to claim 1, wherein each packet forwarding path comprises at least two intermediate forwarding nodes, and each intermediate forwarding node is configured to send the redundant data packet through a segment ID table or an IPv6 protocol.
6. The packet forwarding method according to any of claims 1 to 5, wherein the sending second policy information to the tail node to control the tail node to deduplicate the redundant data packet comprises:
and sending second strategy information to the tail node to control the tail node to remove non-target data messages in the redundant data messages, wherein the target data messages are the data messages which arrive at the tail node first in the redundant data messages.
7. A message forwarding apparatus, comprising:
the first sending module is used for sending first strategy information to a head node of a message forwarding node, controlling the head node to copy a data message from the head node by using information corresponding to a plurality of message forwarding paths with the same tail node based on the first strategy information to obtain a redundant data message, and then sending the redundant data message to the tail node of the message forwarding node based on the plurality of message forwarding paths;
and the second sending module is used for sending second strategy information to the tail node so as to control the tail node to deduplicate the redundant data message.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the message forwarding method according to any one of claims 1 to 6 when executing the program.
9. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements the message forwarding method according to any one of claims 1 to 6.
10. A computer program product comprising a computer program, characterized in that the computer program realizes the steps of the message forwarding method according to any one of claims 1 to 6 when executed by a processor.
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