CN111181766B - Redundant FC network system and method for realizing dynamic configuration of switch - Google Patents
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/084—Configuration by using pre-existing information, e.g. using templates or copying from other elements
- H04L41/0846—Configuration by using pre-existing information, e.g. using templates or copying from other elements based on copy from other elements
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/55—Prevention, detection or correction of errors
- H04L49/552—Prevention, detection or correction of errors by ensuring the integrity of packets received through redundant connections
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
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Abstract
The invention provides a redundant FC network system and a method for realizing dynamic configuration of a switch thereof, which mainly comprise the following steps: a first switch, a second switch, a communication node, wherein the communication node is redundantly connected with the first switch and the second switch respectively, the first and second switches establish a connection through a synchronous link and negotiate for a primary and a secondary switch and synchronize configuration data and dynamic data, after which, the main exchanger starts to receive the data request from the communication node and processes the reply, the standby exchanger forwards the received data request from the communication node to the main exchanger for processing, and the reply information of the main switch is transmitted to the corresponding communication node, when one of the configuration data or the dynamic data of the main switch is modified, immediately sending the data to the standby switch through the synchronous link to keep the data consistency on the main switch and the standby switch, various configurations of the switch can be dynamically issued to the switch through the nodes, and synchronization is automatically realized.
Description
Technical Field
The invention relates to a redundant FC network technology, in particular to a redundant FC network system and a method for realizing dynamic configuration of a switch thereof
Background
In an avionic environment, equipment nodes such as various processors, sensors and displays communicate among equipment through an FC-AE network. In order to provide safe and reliable communication, a redundancy mechanism is introduced into the FC-AE network, namely two FC switches which run independently and are backed up with each other are provided, and each node is provided with two ports which are respectively connected with the two switches.
During communication, data of each node is forwarded to two ports of the opposite node through the two switches, the opposite node performs redundancy processing after receiving two identical data, and when one of the paths has a problem, the other path can continue to work.
As shown in fig. 1, in such a redundant structure, since two switches are independent, the configuration data and the operation data on the two switches cannot be synchronized, so that some functions in the FC protocol cannot be implemented in such a structure. Such as: with explicit login function in the FC protocol, the node sends ELS FLOGI to the switch, which dynamically configures the communication address (FCID). There are various configurations (such as routing information, etc.) other than FCID, and the node card is also unable to configure the switch by means of request.
Therefore, in the redundant FC network system, all communication nodes and two switches can only be configured statically, and dynamic configuration is not supported.
The disadvantages of this solution are:
1) networking is very inflexible: after the channel configuration data is determined, each device cannot modify the physical position, and can only be inserted into a fixed switch port, and the network topology node is fixed.
2) Configuration modification is cumbersome: when a problem occurs in a port corresponding to each device, the port has to be modified, not only the local configuration but also the configurations of a plurality of counterpart nodes. After the configuration of each node is modified, the system needs to be restarted to achieve the effect. In addition, the configuration is manually performed on each node, and configuration errors are easy to occur.
Disclosure of Invention
The invention mainly aims to provide a redundant FC network system and a method for realizing dynamic configuration of switches thereof, so that data synchronization is realized among the switches, and the communication address FCID of each communication node can be dynamically acquired by initiating explicit login to the switches.
To achieve the above object, according to one aspect of the present invention, there is provided a redundant FC network system including: the system comprises a first switch, a second switch and communication nodes, wherein the communication nodes are respectively in redundant communication connection with the first switch and the second switch, the first switch and the second switch are connected through a synchronous link, a main switch and a standby switch are negotiated in communication, data and dynamic data are synchronously configured, and then the main switch starts to receive a data request from the communication nodes and processes a reply, wherein the data request comprises: the method comprises the steps that a login request and a data configuration request are displayed, wherein a standby switch forwards a received data request from a communication node to a main switch for processing through a synchronous link, and forwards reply information of the main switch to the corresponding communication node, and when one of configuration data or dynamic data of the main switch is modified, the configuration data or the dynamic data is sent to the standby switch through the synchronous link immediately so as to keep the consistency of the data on the main switch and the standby switch.
In a possible preferred embodiment, the main switch and the standby switch mutually transmit periodic heartbeat frame monitoring each other through a synchronous link, and when one of the main switch and the standby switch is detected to be offline, the other switch is automatically switched to the main switch to enter an independent working state, so that service is provided for the communication node.
In a possible preferred embodiment, when the offline switch is online again, the two parties communicate again to negotiate out the main switch, the standby switch, the synchronous configuration data and the dynamic data, then the main switch starts to receive the data request from the communication node and processes the reply, the standby switch forwards the received data request from the communication node to the main switch for processing, and forwards the reply information of the main switch to the corresponding communication node, and when one of the configuration data or the dynamic data of the main switch is modified, the configuration data or the dynamic data is immediately sent to the standby switch through the synchronous link so as to maintain the consistency of the data on the main switch and the standby switch.
In order to achieve the above object, according to another aspect of the present invention, there is provided a method for implementing dynamic configuration of switches in a redundant FC network system, the method comprising:
s1, a synchronous link is established between the first and second switches for communication negotiation to form a main and a standby switch;
s2, the main and standby switches communicate with each other, and the data and dynamic data are synchronously configured;
s3 the method for the master switch to initiate acceptance of a data request from a corresponding node includes: explicit login request and data configuration request, and processing reply;
s4 the standby switch forwards the received data request from the communication node to the main switch for processing through the synchronous link, and forwards the reply information of the main switch to the corresponding communication node;
s5 when one of the configuration data or dynamic data of the main switch is modified, it is sent to the standby switch through the synchronous link to keep the data consistency on the main switch and the standby switch.
In a possible preferred embodiment, the data request comprises: at least one of an explicit login request or a data configuration request.
In a possible preferred embodiment, the steps further comprise: s6 the main and the backup exchanges transmit periodic heartbeat frames to each other through the synchronous link to monitor each other, when one of them is detected to be off-line, the other exchange automatically switches to the main exchange to enter an independent working state to provide service for the communication node.
In a possible preferred embodiment, the steps further comprise: s7 when the switch off-line goes on-line again in step S6, the two parties again communicate and negotiate out the main and standby switches to re-execute steps S1 to S5.
The redundant FC network system and the method for realizing the dynamic configuration of the switch thereof provided by the invention have the advantages that:
1) and the networking is flexible. The communication address FCID of each node can be dynamically acquired by initiating explicit login to the switch;
2) various configurations of the switches can be dynamically issued to the switches through the nodes, and synchronization can be automatically realized between the two switches.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a prior art communication structure of a redundant FC network system;
FIG. 2 is a schematic diagram of a communication structure of a redundant FC network system according to the present invention;
FIG. 3 is a flowchart of the method steps for implementing dynamic switch configuration for a redundant FC network according to the present invention;
FIG. 4 is a schematic diagram of a communication experiment structure of a redundant FC network system according to the present invention;
fig. 5 is a schematic diagram of UI interfaces for data transmission and display during a communication experiment of the redundant FC network system of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
Referring to fig. 1 to 4, in order to implement data synchronization between the switches, the present invention enables the communication address FCID of each communication node to be dynamically obtained by initiating explicit login to the switch.
To this end, from a first aspect, the present invention provides a redundant FC network system comprising: the system comprises a first switch, a second switch and a communication node, wherein the communication node is respectively connected with the first switch and the second switch in a redundant communication manner, and the first switch and the second switch are connected through a synchronous link.
And when one of the configuration data or the dynamic data of the main switch is modified, the configuration data or the dynamic data of the main switch is immediately sent to the standby switch through a synchronous link so as to keep the consistency of the data on the main switch and the standby switch.
In addition, in a preferred embodiment, the data request further includes: at least one of an explicit login request or a data configuration request, or a combination thereof.
In order to monitor the working conditions of the main switch and the standby switch and make backup work in time, the main switch and the standby switch mutually transmit periodic heartbeat frames through a synchronous link to monitor the other side, and when one side is detected to be offline, the other side is automatically switched to the main switch to enter an independent working state so as to provide service for the communication node.
And at the moment, if the off-line switch is on-line again, the two parties communicate again to negotiate out the main switch, the standby switch, the synchronous configuration data and the dynamic data, then the main switch starts to receive the data request of the self-communication node and processes the reply, the standby switch forwards the received data request of the self-communication node to the main switch for processing, and forwards the reply information of the main switch to the corresponding communication node, and after one of the configuration data or the dynamic data of the main switch is modified, the data is sent to the standby switch through the synchronous link immediately so as to keep the consistency of the data on the main switch and the standby switch.
Therefore, by the scheme, various configurations of the switch can be dynamically issued to the switch through the nodes, and synchronization can be automatically realized between the two switches, and on the other hand, the communication address FCID of each communication node can be dynamically acquired by initiating explicit login to the switch, so that the networking scheme adopting the technology is more flexible than the networking scheme adopting the prior art.
In addition, in order to better control the operation of the redundant FC network system, the present invention further provides a method for implementing dynamic configuration of switches in the redundant FC network system, as shown in fig. 3, the steps of which include:
s1, establishing synchronous link between the first and second exchangers for communication to negotiate out main and standby exchangers;
s2, the main and standby switches communicate with each other, and the data and dynamic data are synchronously configured;
s3, the main exchanger starts to receive the data request from the communication node and processes the reply;
s4 the standby switch forwards the received data request from the communication node to the main switch for processing, and forwards the reply information of the main switch to the corresponding communication node;
s5 when one of the configuration data or dynamic data of the main switch is modified, it is sent to the standby switch through the synchronous link to keep the data consistency on the main switch and the standby switch.
Wherein the data request comprises: at least one of an explicit login request or a data configuration request.
In addition, in order to monitor the working conditions of the main exchanger and the standby exchanger and make backup work in time, the steps further comprise: s6 the main and the backup exchanges transmit periodic heartbeat frames to each other through the synchronous link to monitor each other, when one of them is detected to be off-line, the other exchange automatically switches to the main exchange to enter an independent working state to provide service for the communication node.
At this time, if the offline switch is online again, the above steps further include step S7: that is, when the switch offline in step S6 comes online again, the two parties again communicate to negotiate out the master and backup switches to re-execute steps S1 to S5. Thereby forming a control loop.
Therefore, according to the scheme, various configurations of the switch can be dynamically issued to the switch through the nodes and can be automatically synchronized between the two switches, and on the other hand, the communication address FCID of each communication node can be dynamically acquired by initiating explicit login to the switch, so that the networking scheme adopting the technology is more flexible than the networking scheme adopting the prior art.
To illustrate the implementation manner of the above embodiment, as shown in fig. 4 to fig. 5, for example, the publish-subscribe communication is implemented on the redundant FC switching network, and after the communication node issues the subscription request to the switch and the switch dynamically establishes the node communication corresponding relationship, the two device communication nodes complete communication with each other.
As shown in fig. 4, after FC switch 1 and FC switch 2 establish a synchronous link, they negotiate with each other with FC switch 1 as the primary switch, FC switch 2 as the backup switch, the first node requests the main switch and the standby switch for Topic publishing by using Topic _1, Topc _2 and Topc _3, requests the main switch and the standby switch for Topic subscription by using Topic _4, Topc _5 and Topc _6, requests the main switch and the standby switch for Topic publishing by using Topic _4, Topc _5 and Topc _6, requests the main switch and the standby switch for subscription by using Topic _1, Topc _2 and Topc _3, when the main switch matches successfully, the response is carried out and is transmitted to the standby switch for redundant response, and the two nodes establish a communication link according to the response message, then, pictures, waveform data and character data are sent on the publishing topics respectively, as shown in fig. 5, so that the other end of the node receives and displays the pictures, the waveform data and the character data through the subscribing topics. In the experimental operation process, the two switchboards execute the restarting operation in turn, and the communication can be normal without interruption.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is to be limited only by the following claims, and their full scope and equivalents, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
It will be appreciated by those skilled in the art that, in addition to implementing the system, apparatus and various modules thereof provided by the present invention in the form of pure computer readable program code, the same procedures may be implemented entirely by logically programming method steps such that the system, apparatus and various modules thereof provided by the present invention are implemented in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system, the device and the modules thereof provided by the present invention can be considered as a hardware component, and the modules included in the system, the device and the modules thereof for implementing various programs can also be considered as structures in the hardware component; modules for performing various functions may also be considered to be both software programs for performing the methods and structures within hardware components.
In addition, all or part of the steps of the method according to the above embodiments may be implemented by a program instructing related hardware, where the program is stored in a storage medium and includes several instructions to enable a single chip, a chip, or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. 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 various media capable of storing program codes.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (6)
1. A redundant FC network system, comprising: the system comprises a first exchanger, a second exchanger and a communication node, wherein the communication node is respectively connected with the first exchanger and the second exchanger in a redundant communication mode, the first exchanger and the second exchanger are connected through a synchronous link, a main exchanger and a standby exchanger are negotiated in a communication mode, data and dynamic data are synchronously configured, and then the main exchanger starts to receive a data request from the communication node and processes a reply, wherein the data request comprises: the method comprises the steps that a login request and a data configuration request are displayed, wherein a standby switch forwards a received data request from a communication node to a main switch for processing through a synchronous link, and forwards reply information of the main switch to the corresponding communication node, and when one of configuration data or dynamic data of the main switch is modified, the configuration data or the dynamic data is sent to the standby switch through the synchronous link immediately so as to keep the consistency of the data on the main switch and the standby switch.
2. The redundant FC network system of claim 1, wherein the master and backup switches mutually transmit periodic heartbeat frames to monitor each other through a synchronous link, and when one of the master and backup switches is detected to be offline, the other switch to the master switch automatically enters an independent working state to provide service to the communication node.
3. The redundant FC network system of claim 2, wherein when the offline switch is online again, the two parties communicate again to negotiate the primary and backup switches and the synchronous configuration data and dynamic data, then the primary switch starts to receive the data request from the communication node and processes the reply, the backup switch forwards the received data request from the communication node to the primary switch for processing, and forwards the reply information of the primary switch to the corresponding communication node, and when one of the configuration data or the dynamic data of the primary switch is modified, the data is sent to the backup switch through the synchronous link immediately to maintain the consistency of the data on the primary and backup switches.
4. A method for implementing dynamic configuration of switches in a redundant FC network system according to any one of claims 1 to 3, comprising the steps of:
s1, a synchronous link is established between the first and second switches for communication negotiation to form a main and a standby switch;
s2, the main exchanger and the standby exchanger communicate data, and the data and the dynamic data are configured synchronously;
s3 the method for the master switch to initiate acceptance of a data request from a corresponding node includes: explicit login request and data configuration request, and processing reply;
s4 the standby switch forwards the received data request from the communication node to the main switch for processing through the synchronous link, and forwards the reply information of the main switch to the corresponding communication node;
s5, when one of the configuration data or the dynamic data of the main switch is modified, the configuration data or the dynamic data is sent to the standby switch through the synchronous link to keep the data consistency on the main switch and the standby switch.
5. The method for implementing dynamic configuration of switches in a redundant FC network system of claim 4 wherein the steps further comprise: s6 the main and standby switches transmit periodic heartbeat frames to each other through the synchronous link to monitor each other, when one of them is detected to be off-line, the other one switches to the main switch automatically to enter an independent working state to provide service for the communication node.
6. The method for implementing dynamic configuration of switches in a redundant FC network system of claim 5 wherein the steps further comprise: s7 when the switch off-line goes on-line again in step S6, the two parties again communicate and negotiate out the master and standby switches to re-execute steps S1 to S5.
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