CN113676405B - Load sharing-based rapid link master-slave switching distributed system and method - Google Patents
Load sharing-based rapid link master-slave switching distributed system and method Download PDFInfo
- Publication number
- CN113676405B CN113676405B CN202110947019.7A CN202110947019A CN113676405B CN 113676405 B CN113676405 B CN 113676405B CN 202110947019 A CN202110947019 A CN 202110947019A CN 113676405 B CN113676405 B CN 113676405B
- Authority
- CN
- China
- Prior art keywords
- link
- module
- data
- service
- distributed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
- H04L47/125—Avoiding congestion; Recovering from congestion by balancing the load, e.g. traffic engineering
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/80—Responding to QoS
Abstract
The invention belongs to the technical field of image communication, and particularly relates to a load sharing-based rapid link master-slave switching distributed system and method. The system comprises a distributed sending end node, a distributed receiving end node, network switching equipment and a service management node. Each transmitting end node and each receiving end node in the system can realize multilink backup; the load of the service data of each node is shared among multiple working links, so that the system flow is not multiplied, and the system cost and stability are not influenced; meanwhile, when the link on the node fails, the data layer of the node automatically realizes the balance of the service data on each available link without the participation of the service layer, thereby achieving the requirement of fast and seamless service data switching and reducing the influence of the audio/video service link switching on the sense of people.
Description
Technical Field
The invention belongs to the technical field of image communication, and particularly relates to a load sharing-based rapid link master-slave switching distributed system and method.
Background
In the communication field, in order to ensure reliable transmission of links, key node devices in a system are often required to support main and standby links, and when a main link fails, the standby link can maintain normal operation to ensure normal operation of the system. The link active-standby technology is widely applied to an image communication system, particularly a distributed audio and video system. Since the audio-video data can be directly perceived through human senses, the link is required to be as fast and seamless as possible in the switching process so as to minimize the influence on the human senses.
The existing processing method of the link master and standby of the distributed audio and video system is to send completely same audio and video data on two links of a sending end node, a receiving end node receives two identical audio and video data, and one of the two identical audio and video data is selected randomly to be decoded and displayed.
The principle of the link backup mode is simple, and when one link fails, the receiving end node can quickly detect and switch to the other link. However, this approach has the disadvantage of increasing the data bandwidth by two or even N times (N >2 if multi-link active/standby is considered), which greatly increases the capacity and load of the switching device, and thus the overall cost of the system.
Disclosure of Invention
The invention aims to further improve the defects of the main and standby link technologies of the existing distributed audio and video system, and provides a load sharing-based rapid main and standby link switching distributed system and method, so that the main and standby links of nodes in the distributed audio and video system do not need to occupy more system bandwidth, and the rapid switching performance of the original link backup mode is maintained.
In order to achieve the above object, the present invention provides a load sharing-based fast link active/standby switching distributed system, which includes a distributed sending end node, a distributed receiving end node, a service management node and a network switching device; the distributed sending end node, the distributed receiving end node and the service management node are connected with the network switching equipment through standard network link interfaces; wherein:
the service management node receives the link backup requirement of the user, performs link limit configuration on the distributed sending node and the distributed receiving node, receives link state report and link alarm of the distributed sending node and the distributed receiving node, and feeds back the notice to the user for timely processing;
the distributed sending end node comprises a data flow control module, a first upper layer service module, a data scheduling and distributing module and a plurality of first link transceiving modules; wherein:
the data flow control module is used for carrying out flow calculation according to the link limit configured by the service management node and the actual available link fed back by the first link transceiving module and providing a calculation result to the first upper-layer service module;
the first upper-layer service module outputs coded service data according to the flow limited by the data flow control module;
the data scheduling and distributing module is used for receiving the coded data of the first upper layer service module and uniformly distributing the coded data to each available first link transceiving module;
the first link transceiving module is used for immediately sending the data to the network switching equipment through a physical link after receiving the data of the data scheduling and distributing module, and forwarding the data to the distributed receiving end node by the network switching equipment;
the distributed receiving end node comprises a second upper layer service module, a data receiving and routing module, an effective link indicating module and a plurality of second link transceiving modules; wherein:
the second link transceiver module receives the coded data forwarded by the network switching equipment and immediately transmits the coded data to the data receiving and routing module;
the effective link indicating module is used for acquiring the state of each second link transceiver module and reporting the available condition to the data receiving and routing module;
the data receiving and routing module is used for carrying out link distribution and activation according to the link limit configured by the service management node and the actual available link fed back by the second link transceiving module and transmitting the activated link receiving data to the second upper-layer service module;
and the second upper layer service module acquires the coded service data of the data receiving and routing module, and performs decoding display.
In the invention, after the distributed sending end node receives the link limit configuration N, the data flow control module calculates the actual service flow:
(1) Acquiring the state of each first link transceiver module to obtain the total available link number K;
(2) If N < = K, informing the first upper-layer service module that the upper limit of the flow is N Pb, wherein Pb is the rated flow of the single link;
(3) And if N is larger than K, informing the first upper layer service module that the upper limit of the flow is K Pb, and reporting a link resource shortage alarm to the service management node.
In the invention, the data scheduling and distributing module monitors the state of each first link transceiver module, and evenly distributes service data to each available first link transceiver module in real time to realize load sharing of the service data; when a first link transceiver module is found to be in failure, the service data transmission queue of the link is immediately removed.
In the invention, after the distributed receiving end node receives the link limit configuration M, the data receiving routing module activates the link routing:
(1) The effective link indicating module acquires the state of each second link transceiver module to obtain the total available link number L;
(2) If M < = L, activating M links in the L effective links, and receiving the coded service data;
(3) And if M is greater than L, activating the L link and reporting a link resource shortage alarm to the service management node.
In the invention, the data receiving and routing module monitors the state of each activated second link transceiver module, and once a certain second link transceiver module is found to be in fault, the service data receiving queue of the link is removed and the backup effective second link transceiver module is activated.
The invention also provides a method for fast switching the main and standby link distributed systems based on the load sharing.
Compared with the prior art, the rapid link master-slave switching distributed system and method based on load sharing disclosed by the invention have the following beneficial effects:
1. the main and standby modes of the links are more flexible, and each node can be realized by multiple links;
2. the link main and standby system supports data volume load sharing among links, and the system flow multiplication and the system cost and stability are not influenced;
3. when the availability of the link changes, the data layer (namely the data scheduling and distributing module and the data flow control module of the sending end node, the data receiving and routing module and the effective link indicating module of the receiving end node) automatically realizes the balance of the service data on each link, and the service layer (namely the first upper service module of the sending end node and the second upper service module of the receiving end node) is not required to participate, so that the quick and seamless service data switching can be realized, and the influence of the audio and video service link switching on the senses of people is reduced.
Drawings
Fig. 1 is a block diagram of a fast primary/standby link switching distributed system based on load sharing.
Fig. 2 is a block diagram of a distributed sender node.
Fig. 3 is a flow chart of the operation of a distributed sender node.
Fig. 4 is a block diagram of a distributed receiver node.
Fig. 5 is a flow chart of the operation of a distributed receiver node.
Detailed Description
The invention is explained in further detail below with reference to the figures and examples.
Example 1
As shown in fig. 1, a load sharing-based fast active/standby link switching distributed system includes a distributed sending-end node, a distributed receiving-end node, a network switching device, and a service management node. The distributed sending end node, the distributed receiving end node and the service management node are connected with the network switching equipment through standard network link interfaces. The service management node is used for configuring and managing link quota for each distributed transmitting end node according to the main/standby mode of the link required by the user, and the receiving end node is connected with the network switching equipment through a network interface; the network switching equipment is connected with each distributed transmitting end node and each distributed receiving end node through a plurality of links to realize link route switching among the nodes; the distributed sending end node is connected with the network switching equipment through a plurality of links, and the distributed receiving end node is connected with the network switching equipment through a plurality of links. The following specifically describes the structures and workflows of the distributed sender node, distributed receiver node, and service management node.
One) distributed sending end node
The distributed transmitting end node receives an audio and video original data stream of a user side, transmits the encoded data stream to the distributed receiving end node through a plurality of links after audio and video encoding, and designs a link to be equal to the number n of the first link transceiving modules, wherein the link comprises a working link and a backup link; the structure of the distributed transmitting end node is shown in fig. 2, and the main and standby link subsystems are completed by three parts, specifically, a service layer (a first upper service module), a data layer (a data scheduling and distributing module and a data flow control module) and a physical layer (a plurality of first link transceiver modules);
the first upper-layer service module outputs coded service data according to the flow limited by the data flow control module;
the data flow control module is used for carrying out flow calculation according to the link limit configured by the service management node and the actual available link fed back by the physical layer and providing a calculation result to the first upper-layer service module;
a data dispatching and distributing module for receiving the coding data of the first upper layer service module and uniformly distributing the coding data to each available first link transceiver module, wherein the number of the first link transceiver modules is equal to the number of the working links
The first link transceiving module is used for immediately transmitting the data to the network switching equipment through a physical link after receiving the data of the data scheduling and distributing module, and the data is forwarded to the distributed receiving end node by the network switching equipment;
fig. 3 shows a principle of link backup of a distributed sender node, and the specific method or steps thereof are as follows:
firstly, a service management node performs link quota configuration on a distributed sending end node according to a system backup requirement, namely the number of N is determined;
after the distributed sending end node receives the link limit configuration, the data flow control module calculates the actual service flow:
(1) Acquiring the state of each first link transceiver module to obtain the total available link number K;
(2) If N < = K, informing the first upper layer service module that the upper limit of the flow is N Pb (Pb is the rated flow of the single link);
(3) If N is larger than K, informing the first upper layer service module that the upper flow limit is K & ltPb & gt, and reporting a link resource shortage alarm to the service management node;
after receiving the flow limitation of the data flow control module, the first upper layer service module limits the total service data output flow;
the data scheduling and distributing module monitors the state of each first link transceiver module, and evenly distributes service data to each available first link transceiver module in real time to realize load sharing of the service data; once a failure of a first link transceiver module is found, a service data transmission queue of the link is removed immediately without the participation of a first upper-layer service module, so that the fast and efficient switching of the main link and the standby link is ensured.
Two) distributed receiving end node
And the distributed receiving end nodes receive the coded data on the plurality of links, and the coded data are decoded and then displayed uniformly. The number of designed links is equal to the number m of second link transceiver modules, the second link transceiver modules comprise working links and backup links, the structure of a distributed receiving end node is shown in fig. 4, and a main link subsystem and a standby link subsystem are completed by matching three parts, specifically, a service layer (a second upper service module), a data layer (a data receiving and routing module and an effective link indicating module) and a physical layer (a plurality of second link transceiver modules);
the second upper layer service module acquires the coded service data of the data receiving routing module, and performs decoding display;
the data receiving and routing module carries out link allocation and activation according to the link limit configured by the service management node and an actual available link fed back by the physical layer, and transmits activated link receiving data to the second upper-layer service module, wherein the activated link is a working link;
the effective link indicating module acquires the state of each second link transceiver module and reports the available condition to the data receiving routing module;
and the second link transceiver module immediately transmits the encoded data to the data receiving and routing module after receiving the encoded data forwarded by the network switching equipment.
Fig. 5 shows a principle of link backup of a distributed receiver node, where the specific method or steps are:
firstly, a service management node performs link quota configuration on a distributed receiving node according to a system backup requirement, namely the number of M is determined;
after the distributed receiving end node receives the link limit configuration, the data receiving routing module activates the link routing:
(1) The effective link indicating module acquires the state of each second link transceiver module to obtain the total available link number L;
(2) If M < = L, activating M links in the L effective links, and receiving the coded service data;
(3) If M is larger than L, activating L links, and reporting a link resource shortage alarm to a service management node;
the data receiving and routing module monitors the state of each activated second link transceiver module, and once a certain second link transceiver module is found to be in fault, the service data receiving queue of the link is removed immediately, and the backup effective second link transceiver module is activated without the participation of a second upper-layer service module, so that the high speed and the high efficiency of the switching of the main link and the standby link are ensured.
Three) service management node
The service management node is used as an interactive window between a user and the system device, generates a specific command according to a user operation instruction and issues the command to each unit in the system device so as to enable the units to work cooperatively to meet the use requirement of the user; the method specifically comprises the following steps:
receiving a user link backup requirement, and performing link quota on a distributed sending end node and a distributed receiving end node;
receiving link state reports and link alarms of distributed transmitting end nodes and distributed receiving end nodes; and the notification is fed back to the user for timely processing.
In the foregoing, in the active/standby switching distributed system provided in the embodiment, the active/standby link systems support data load sharing between links, so that system traffic is not multiplied, and system cost and stability are not affected; the main and standby modes of the links are more flexible, and each node can realize multi-link backup; when the availability of the link changes, the data layer automatically realizes the balance of the service data on each link without the participation of the service layer, thereby realizing the rapid and seamless service data switching and reducing the influence of the audio/video service link switching on the sense of people.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. A fast link master-standby switching distributed system based on load sharing is characterized by comprising a distributed sending end node, a distributed receiving end node, a service management node and a network switching device; the distributed sending end node, the distributed receiving end node and the service management node are connected with the network switching equipment through standard network link interfaces; wherein:
the service management node receives the link backup requirement of the user, performs link limit configuration on the distributed sending node and the distributed receiving node, receives link state report and link alarm of the distributed sending node and the distributed receiving node, and feeds back the notice to the user for timely processing;
the distributed sending end node comprises a data flow control module, a first upper layer service module, a data scheduling and distributing module and a plurality of first link transceiving modules; wherein:
the data flow control module is used for carrying out flow calculation according to the link limit configured by the service management node and the actual available link fed back by the first link transceiving module and providing a calculation result to the first upper-layer service module;
the first upper-layer service module outputs coded service data according to the flow limited by the data flow control module;
the data scheduling and distributing module is used for receiving the coded data of the first upper layer service module and uniformly distributing the coded data to each available first link transceiving module;
the first link transceiving module is used for immediately transmitting the data to the network switching equipment through the link after receiving the data of the data scheduling and distributing module, and the data is forwarded to the distributed receiving end node by the network switching equipment;
the distributed receiving end node comprises a second upper layer service module, a data receiving and routing module, an effective link indicating module and a plurality of second link transceiving modules; wherein:
the second link transceiver module receives the coded data forwarded by the network switching equipment and immediately transmits the coded data to the data receiving and routing module;
the effective link indicating module is used for acquiring the state of each second link transceiver module and reporting the available condition to the data receiving and routing module;
the data receiving and routing module is used for carrying out link distribution and activation according to the link limit configured by the service management node and the actual available link fed back by the second link transceiving module and transmitting the activated link receiving data to the second upper-layer service module;
the second upper layer service module acquires the coded service data of the data receiving and routing module, and performs decoding display; wherein:
after the distributed sending end node receives the link limit configuration N, the data flow control module calculates the actual service flow:
(1) Acquiring the state of each first link transceiver module to obtain the total available link number K;
(2) If N < = K, informing the first upper-layer service module that the upper limit of the flow is N Pb, wherein Pb is the rated flow of the single link;
(3) If N is greater than K, informing the first upper layer service module that the upper flow limit is KxPb, and reporting a link resource insufficiency alarm to the service management node;
after the distributed receiving end node receives the link quota configuration M, the data receiving routing module performs link routing activation:
(1) The effective link indicating module acquires the state of each second link transceiver module to obtain the total available link number L;
(2) If M < = L, activating M links in the L effective links, and receiving the coded service data;
(3) And if M is greater than L, activating the L link and reporting a link resource shortage alarm to the service management node.
2. The distributed system for rapid active-standby switching of links according to claim 1, wherein the data scheduling and distributing module monitors the status of each first link transceiver module, and evenly distributes the service data to each available first link transceiver module in real time to realize load sharing of the service data; when a first link transceiver module is found to be in fault, a service data sending queue of the link is immediately removed.
3. The distributed system for rapid active-standby switching of links according to claim 1, wherein the data receiving routing module monitors the status of each activated second link transceiver module, and once a failure of a second link transceiver module is found, the data receiving routing module removes the service data receiving queue from the link and activates the active second link transceiver module for backup.
4. A method for fast switching between main and standby links of a distributed system according to any one of claims 1 to 3, comprising a method for a distributed sending end node to implement link backup switching, the specific steps being as follows:
firstly, a service management node performs link quota configuration on a distributed sending end node according to a system backup requirement, namely the number of N is determined;
after the distributed sending end node receives the link limit configuration, the data flow control module calculates the actual service flow:
(1) Acquiring the state of each link transceiver module to obtain the total available link number K;
(2) If N < = K, informing the first upper-layer service module that the upper limit of the flow is N Pb, wherein Pb is the rated flow of the single link;
(3) If N is larger than K, informing the first upper layer service module that the upper flow limit is K & ltPb & gt, and reporting a link resource shortage alarm to the service management node;
after receiving the flow limitation of the data flow control module, the first upper layer service module limits the total service data output flow;
the data scheduling and distributing module monitors the state of each first link transceiver module, and evenly distributes service data to each available first link transceiver module in real time to realize load sharing of the service data; once a failure of a first link transceiver module is found, a service data transmission queue of the link is removed immediately without the participation of a first upper-layer service module, so that the fast and efficient switching of the main link and the standby link is ensured.
5. The method for rapidly switching between a main link and a standby link in a distributed system according to claim 4, comprising a method for the distributed receiving end node to implement the link backup switching, specifically comprising the following steps:
firstly, a service management node performs link quota configuration on a distributed receiving node according to a system backup requirement, namely the number of M is determined;
after the distributed receiving end node receives the link quota configuration, the data receiving routing module performs link routing activation:
(1) The effective link indicating module acquires the state of each second link transceiver module to obtain the total available link number L;
(2) If M < = L, activating M links in the L effective links, and receiving the coded service data;
(3) If M is larger than L, activating L links, and reporting a link resource shortage alarm to a service management node;
the data receiving and routing module monitors the state of each activated second link transceiver module, and once a certain second link transceiver module is found to be in fault, the service data receiving queue of the link is removed immediately, and the backup effective second link transceiver module is activated without the participation of a second upper-layer service module, so that the high speed and the high efficiency of the switching of the main link and the standby link are ensured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110947019.7A CN113676405B (en) | 2021-08-18 | 2021-08-18 | Load sharing-based rapid link master-slave switching distributed system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110947019.7A CN113676405B (en) | 2021-08-18 | 2021-08-18 | Load sharing-based rapid link master-slave switching distributed system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113676405A CN113676405A (en) | 2021-11-19 |
| CN113676405B true CN113676405B (en) | 2022-10-14 |
Family
ID=78543510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110947019.7A Active CN113676405B (en) | 2021-08-18 | 2021-08-18 | Load sharing-based rapid link master-slave switching distributed system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113676405B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023804A (en) * | 2012-12-18 | 2013-04-03 | 北京星网锐捷网络技术有限公司 | Method, device and network equipment for polymerization chain self-adaption flow load balance |
| CN103428103A (en) * | 2013-08-08 | 2013-12-04 | 杭州华三通信技术有限公司 | Link load control method and stacking device |
| CN105991426A (en) * | 2015-03-04 | 2016-10-05 | 中兴通讯股份有限公司 | Method and device for managing link in load sharing |
| CN108390820A (en) * | 2018-04-13 | 2018-08-10 | 华为技术有限公司 | Method, equipment and the system of load balancing |
| CN109391488A (en) * | 2017-08-08 | 2019-02-26 | 北京亿阳信通科技有限公司 | A kind of link management method and system for SDN network |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433729C (en) * | 2006-07-25 | 2008-11-12 | 华为技术有限公司 | Load sharing apparatus and method for realizing multi-chain circuit transmission |
| CN101404622B (en) * | 2008-11-07 | 2011-03-23 | 重庆邮电大学 | Wireless internet congestion control method based on multi-path load balancing and controller thereof |
| US9992102B2 (en) * | 2015-08-28 | 2018-06-05 | Ciena Corporation | Methods and systems to select active and standby ports in link aggregation groups |
| CN108075980A (en) * | 2016-11-17 | 2018-05-25 | 中兴通讯股份有限公司 | A kind of control method of forward-path, device and control device |
| CN108259372A (en) * | 2016-12-28 | 2018-07-06 | 天津岩石科技有限公司 | A kind of multi-link load balance system and method |
| US10164873B1 (en) * | 2017-06-01 | 2018-12-25 | Ciena Corporation | All-or-none switchover to address split-brain problems in multi-chassis link aggregation groups |
| CN107483239A (en) * | 2017-08-07 | 2017-12-15 | 深圳供电规划设计院有限公司 | A kind of electric power communication transmission network reliability determines method |
| CN110661702B (en) * | 2018-06-28 | 2022-09-13 | 中兴通讯股份有限公司 | Link backup method and device and computer readable storage medium |
| CN110224875A (en) * | 2019-06-27 | 2019-09-10 | 湖北鑫英泰***技术股份有限公司 | A kind of multichannel main/slave link fast switch over method and system |
| CN112996046B (en) * | 2021-02-04 | 2022-07-12 | 邦彦技术股份有限公司 | Load dynamic sharing processing method, network architecture and equipment |
-
2021
- 2021-08-18 CN CN202110947019.7A patent/CN113676405B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023804A (en) * | 2012-12-18 | 2013-04-03 | 北京星网锐捷网络技术有限公司 | Method, device and network equipment for polymerization chain self-adaption flow load balance |
| CN103428103A (en) * | 2013-08-08 | 2013-12-04 | 杭州华三通信技术有限公司 | Link load control method and stacking device |
| CN105991426A (en) * | 2015-03-04 | 2016-10-05 | 中兴通讯股份有限公司 | Method and device for managing link in load sharing |
| CN109391488A (en) * | 2017-08-08 | 2019-02-26 | 北京亿阳信通科技有限公司 | A kind of link management method and system for SDN network |
| CN108390820A (en) * | 2018-04-13 | 2018-08-10 | 华为技术有限公司 | Method, equipment and the system of load balancing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113676405A (en) | 2021-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101378334B (en) | Communication method based on dual-network redundant universal network model | |
| CN102724030A (en) | Stacking system with high reliability | |
| CN105072021B (en) | A kind of message forwarding method of dispatch automated system cross-network segment | |
| CN102685928B (en) | Information processing method of internet of things, base station and system of internet of things | |
| CN1937782B (en) | Frame device and its message transmitting method | |
| CN103166800B (en) | Message transmission method for dual-network redundant message bus in cross failure | |
| CN110795280A (en) | Remote double-activity disaster recovery system based on mysql asynchronous and bidirectional | |
| CN105897472B (en) | The data processing system of business continuance protection is provided | |
| CN208227042U (en) | A kind of real-time automatic fault warning device of server | |
| CN102238069B (en) | Data processing method and device for link switching process | |
| CN103036724A (en) | State information transmission method and network equipment and combination equipment | |
| CN113676405B (en) | Load sharing-based rapid link master-slave switching distributed system and method | |
| CN105302649A (en) | Disaster recovery backup method and system | |
| CN112118068B (en) | State monitoring method, device, equipment and storage medium of forwarding network | |
| CN106533771A (en) | Network device and control information transmission method | |
| CN100571219C (en) | A kind of load balancing router and the equipment, the method that realize load balancing | |
| CN113497724B (en) | Communication system and communication method of modularized multi-level converter | |
| JP3123944B2 (en) | Duplication of monitoring data in network management system | |
| US10492246B2 (en) | Method and communications system for speech communication | |
| CN102546995B (en) | Data distribution processing method and device | |
| CN102271045A (en) | Virtual private network (VPN)-instance-based inter-equipment backup method, equipment and system | |
| CN105704422B (en) | A kind of video conference group network system and its method | |
| CN211457141U (en) | Device for automatically switching one server and multiple servers | |
| CN113190183B (en) | Storage cluster device and equipment mounting method | |
| CN202085182U (en) | Bandwidth distribution device for node |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |