CN115333992A

CN115333992A - Link resource optimization method based on standard PRP protocol

Info

Publication number: CN115333992A
Application number: CN202210963472.1A
Authority: CN
Inventors: 蒲涛; 赵全鑫; 雒祖宇; 张阳
Original assignee: Sichuan Netop Telecom Co ltd
Current assignee: Sichuan Netop Telecom Co ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2022-11-11
Anticipated expiration: 2042-08-11
Also published as: CN115333992B

Abstract

The invention discloses a link resource optimization method based on a standard PRP protocol, which comprises the following steps: in a communication flow of a PC terminal for handshaking link establishment through a PRP module and a network switching module, recording network switching module information of communication data in a communication link which preferentially reaches or does not make an error through the PRP module; and step two, in the process of data communication between the PC terminals, selecting the network link recorded with the network exchange module information through the PRP module to transmit data. The invention provides a link resource optimization method based on a standard PRP protocol, which optimizes and improves the communication flow among a PC terminal, a PRP module and a network exchange module in the existing standard PRP protocol flow, so that the data transmission is not carried out on the other link during communication under the condition of ensuring the smoothness of one transmission link, thereby reducing the condition of wasting link resources in the message transmission process.

Description

Link resource optimization method based on standard PRP protocol

Technical Field

The present invention relates to the field of data communications. More particularly, the present invention relates to a link resource optimization method based on a standard PRP protocol for use in a terminal device communication scenario.

Background

The PRP protocol is a redundancy protocol operating in a terminal device, one terminal device is connected to two networks independent of each other and having the same network topology, and the two networks operate in parallel. Because there is no direct connection between the two networks, if one of the networks fails, the other network will not be affected.

Taking fig. 2-3 as an example, in the standard PRP protocol, the messages in the ping process messages from PC1 to PC2 pass through a and B, respectively, and the specific flow includes: the PRP sending side copies one original information frame, adds a section of specific field (RCT) in two frames to form a PRP information frame, respectively sends out the PRP information frame from two ports of the PRP sending side (each port respectively corresponds to a switch A and a switch B), reaches the same PRP receiving side after passing through two independent switches A and B, after receiving the two PRP information frames from the two ports, the PRP receiving side can identify a certain PRP frame according to the MAC of a source (namely PC 1) and the frame serial number in the RCT, discards the later-arriving information frame, only reserves one first-arriving information frame, eliminates the specific field (RCT), reduces the original information to the original information, and transmits the original information to an upper layer (PC 2). Therefore, in the whole process of the PC1 ping the switch a, since the

lines

2 and 4 connected to the switch a and the

lines

3 and 5 connected to the switch B all transmit the related messages, when the

lines

2 and 4 connected to the switch a preferably arrive and there is no information error, the link resource waste is caused by the discarding of the transmitted messages on the

lines

3 and 5 connected to the switch B.

Disclosure of Invention

An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter.

To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a link resource optimization method based on a standard PRP protocol, including:

in a communication flow of a PC terminal for handshaking link establishment through a PRP module and a network switching module, recording network switching module information of communication data in a communication link which preferentially reaches or does not make an error through the PRP module;

and step two, in the process of data communication between the PC terminals, selecting the network link recorded with the network exchange module information through the PRP module to transmit data.

Preferably, in the step one, the IP of the network switching module on each network link is identified through a handshake link-building process, and the identification process is configured to include:

s1, a sending terminal PC sends an ARP request packet to a corresponding sending terminal PRP module;

s2, after receiving the ARP request packet, the PRP module at the sending end marks a mark field on the ARP request packet and sends the ARP request packet to network switching modules of different links;

s3, the network switching module in any link inquires the received ARP request packet to judge whether the receiver of the ARP request packet is the receiver of the ARP request packet, if so, the mark field in the ARP request packet is removed, and the ARP request packet is returned to the sending end PRP module;

and S4, the PRP module of the sending end records the information of the network switching module related to the transmission link in the transmission message and transmits the ARP request packet to the PC of the sending end.

Preferably, in the second step, the data communication between the PC terminals includes communication of a PING request packet between the sending terminal PC and the receiving terminal PC, and the communication method includes:

s5, after receiving the ARP request packet transmitted by the PRP module of the sending end, the PC of the sending terminal sends a corresponding PING request packet to the PRP module of the sending end;

s6, after receiving the PING request packet, the sending end PRP module matches the PING request packet with the information of the recording network switching module, if the matching is successful, the PING request packet is not processed, the PING request packet is sent out through the recorded network switching module port, and relevant information is not sent to the unrecorded network switching module port;

if the matching fails, the sending-end PRP module marks the corresponding PING request packet with an RCT field, and simultaneously sends related information to the unrecorded and recorded network switching module ports.

The invention at least comprises the following beneficial effects: in the existing standard PRP protocol flow, the communication flow of the PC terminal, the PRP module and the network exchange module is optimized and improved, so that the data transmission is not carried out on the other link during communication under the condition of ensuring the smoothness of one transmission link, and the condition of wasting link resources in the message transmission process is reduced.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic flow chart of communication between a PC terminal and a PRP switch after optimization and improvement of the invention;

FIG. 2 is a schematic communication flow diagram of a standard PRP protocol in the prior art;

fig. 3 is a schematic flow chart illustrating a variation of a PRP packet in a standard PRP protocol in the prior art.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.

The invention provides a link resource optimization method based on a standard PRP protocol, which comprises the following steps:

and step two, in the process of data communication between the PC terminals, selecting the network link recorded with the network exchange module information through the PRP module to transmit data. In the scheme, the communication flow of the PC terminal, the PRP module and the network switching module (switch) is optimized and improved, so that the PRP has a judgment processing function, a communication link with data arriving preferentially or without errors is selected as a preset communication link in the communication process, and a medium network switching module of the unselected communication link does not have a large number of data packets to be transmitted from the medium network switching module, and the link resource is saved.

In conjunction with the standard PRP protocol flow of fig. 2, the method for optimizing and improving the communication flow of the PC terminal, the PRP module and the network switching module according to the present invention is configured to include:

1. in the management of the IP addresses of the switch a and the switch B by the PC terminal, the process is configured to include:

1. PC1 sends ARP Request message to PRP, the message has no RCT field;

2. in the processing process, when the message reaches the sending end PRP from the PC1, the sending end PRP copies the original message and marks RCT fields of the A and B switches, wherein the RCT fields comprise Sequence Number, LSDU size, lan Number and PRP Suffixg;

wherein, the Sequence Number is a 16-bit frame Sequence Number, and the Sequence numbers of the original frame and the copy frame are consistent and will increase with the sending of the PRP frame;

LSDU size is 12-bit Payload size, identifying the total byte size of Payload field + RCT field;

lan Id is a 4-bit subnet ID, and respectively represents two independent subnets;

the PRP Suffixg is a 16-bit PRP information frame suffix, and after the RCT field is marked on the two messages, the message with the LAN Id of A is sent through the switch A; the message with the LAN Id of B is sent through the switch B, and the communication system has a unique network link redundancy backup mechanism in this way;

3. the switch A receives the message and then forwards the message, and meanwhile, the switch A finds that the ARP Request IP address is that the switch A receives and processes the message and then sends an ARP Response message to the PRP on the link 2, and the message has no RCT field;

the switch B receives the ARP Request IP address, if not, forwards the ARP Request IP address, and directly discards the ARP Request message.

4. When PRP receives message without RCT field from link 2, recording MAC, IP information and source port (i.e. MAC and IP information of switch A and port connected to link 2) of the message and transmitting the message to PC1 via link 1;

secondly, in the ping process processing of the PC1 to A and B, the flow comprises the following steps:

1. the PC1 receives and processes the message, and then sends a PING Request message;

2. when the message is sent to the PRP, the PRP checks the message to be matched with the previously recorded MAC and IP information, if the matching is successful, the message is not processed and is directly sent out from the recorded port, and at the moment, the message is sent out through the link 2 and cannot be sent on the link 3, so that the link bandwidth resource is saved.

If the matching fails, the sending end PRP module marks the corresponding PING request packet with an RCT field and sends message information to a link 2 and a link 3;

specifically, the flow of its work may include:

1. PC1 sends ARP Request message to PRP, the message has no RCT field;

2. the PRP marks RCT field on the message and then respectively sends out from the link 2 and the link 3;

3. after receiving the message, the switch A finds that the ARP Request IP address is the ARP Request IP address, then sends an ARP Response message to the PRP on the link 2 after receiving and processing the message, and the message has no RCT field;

4. after receiving the message, the switch B finds that the ARP Request IP address is not the ARP Request message and directly discards the ARP Request message;

5. when receiving a message without an RCT field transmitted by a link 2, the PRP records MAC and IP information and source ports (namely the MAC and IP information of a switch A and a port connected with the link 2) of the message and transmits the message to a PC1 through a link 1;

6. PC1 receives and processes the message, and then sends a PING Request message;

7. when the message is sent to the PRP, the PRP checks that the message is matched with the previously recorded MAC and IP information, if the matching is successful, the message is not processed and is directly sent out from the recorded port, and at the moment, the message is sent out through the link 2 and is not sent out on the link 3, so that the link bandwidth resource is saved. If the matching is not successful, the RCT field is marked on the message and then the message is respectively sent from the link 2 and the link 3.

It can be seen from the above flow that the present invention effectively reduces the traffic sent to the switch in the PRP link, and saves link resources.

The above scheme is merely illustrative of a preferred example, and is not limiting. In the implementation of the invention, appropriate replacement and/or modification can be carried out according to the requirements of users.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.

Claims

1. A method for optimizing link resources based on a standard PRP protocol is characterized by comprising the following steps:

in the communication process of handshaking link establishment of a PC terminal through a PRP module and a network switching module, the PRP module records the information of the network switching module in a communication link where communication data preferentially arrives or does not have errors;

2. The method for optimizing link resources according to claim 1, wherein in step one, the identification procedure of the IP of the network switching module on each network link is performed through a handshake link-building procedure, and the identification procedure is configured to include:

3. The method for optimizing link resources based on a standard PRP protocol according to claim 2, wherein in the step two, the data communication between the PC terminals includes a communication of a PING request packet between the sending terminal PC and the receiving terminal PC, and the communication mode is configured to include: