CN112994929A - Network transmission method and system based on main and standby link switching - Google Patents
Network transmission method and system based on main and standby link switching Download PDFInfo
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- 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
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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- 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
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- 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
- H04L45/54—Organization of routing tables
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
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Abstract
The invention discloses a network transmission method and a system based on main and standby link switching, wherein the method comprises the following steps: judging whether the main link fails or not; if yes, switching to a disaster recovery link, wherein the disaster recovery link is formed by an ad hoc network device through a wireless access or a main access of a main link; selecting a path of the disaster recovery link, and carrying out network transmission based on the selected path; if not, switching to the main link for network transmission. When the main path is normal, network transmission is carried out through the main path, dependence on ad hoc network equipment is avoided, the stability of the main path is higher than that of a wireless path, and the handling performance and stability can be effectively improved; when the main channel has a fault, the network transmission is carried out through the self-networking equipment, so that the reliability of the network transmission is improved.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a network transmission method and a system based on active/standby link switching.
Background
Due to flexible networking, convenient use and large transmission bandwidth, the wireless ad hoc network device is often used for backup of a wired return link of a 2G \3G \4G base station. When the base station is damaged by natural disasters or accidents, wired links such as optical fibers and the like serving as return links of the base station can be damaged, and the base station can still ensure the smoothness of the return links after multi-hop relay through wireless ad hoc network equipment.
In order to optimize the optimal routing path, a wired link is wired when normal, a wireless ad hoc network is wired when a fault occurs, and the optimal routing is automatically selected. At this time, the ad hoc network device regards the wired path on the tunnel port as a part of the ad hoc network link connected with the neighbor device, and performs evaluation and path selection together with other wireless paths. The wired path will also transmit the signaling and routing messages of the ad hoc network, and encapsulate the ethernet data messages into ad hoc network message format in a tunnel mode for transmission so as to adapt to the ad hoc network protocol.
However, in this networking mode, data of both the wired path and the wireless path are transmitted through the ad hoc network device, which has a high requirement on the reliability of the ad hoc network device and the ad hoc network protocol thereof, and particularly for telecommunication-class devices such as a base station and core network devices, when the 3G, 4G and other network base station devices are connected, the requirement on the throughput rate during normal backhaul is high, so that the requirements on the reliability and the throughput performance of the ad hoc network device are very high, and as the data volume of network transmission is rapidly increased, the ad hoc network device is more and more difficult to meet the requirements on the reliability and the throughput performance.
Disclosure of Invention
In view of the above technical problems in the prior art, the present invention provides a network transmission method and system based on active/standby link switching, which improves throughput and reliability of network transmission by switching between an active link and a standby link.
The invention discloses a network transmission method based on main and standby link switching, which comprises the following steps:
judging whether the main link fails or not;
if yes, switching to a disaster recovery link, wherein the disaster recovery link is formed by an ad hoc network device through a wireless access or a main access of a main link;
selecting a path of the disaster recovery link, and carrying out network transmission based on the selected path;
if not, switching to the main link for network transmission.
Preferably, the primary link failure is detected by a bidirectional forwarding detection protocol or network quality analysis based technique.
Preferably, the switching of the main link and the standby link is performed through a router and a switch; connecting a main port of the router to a first virtual local area network of the switch; connecting the standby port of the router and the data network port of the ad hoc network device to a second virtual local area network of the switch; a tunnel network port of the self-organizing network equipment and a third virtual local area network connected to the switch are connected; the main path is connected to the convergence ports of the first virtual port and the third virtual port.
Preferably, the router is a BFD linkage router, and the switch is a two-layer switch.
Preferably, the ad hoc network device forms a wireless path through a wireless network.
Preferably, the method for switching the standby port and the main port by the router includes:
step 401: setting a main route for the main port and setting a standby route for the standby port;
step 402: judging whether the main link fails or not;
if yes, go to step 403: deleting the main route from the route table of the router, carrying out network transmission through the standby route, and executing step 402;
if not, go to step 404: and adding a main route in the routing table, and carrying out network transmission through the main route.
Preferably, the method for selecting the disaster-tolerant backup link path includes:
acquiring an available path of a disaster recovery link and a path passed by the path;
calculating the cost combination of each path according to the cost of the path;
and selecting the path according to the cost.
The invention also provides a system for realizing the network transmission method, which comprises a fault detection module, a link switching module and a path selection module,
the fault detection module is used for detecting whether the main link fails;
if a fault occurs, switching to a disaster recovery link through the link switching module, wherein the disaster recovery link is composed of ad hoc network equipment through a wireless access or a main access of a main link;
the path selection module is used for selecting a path of the disaster recovery link and carrying out network transmission based on the path;
and if the fault does not occur, switching to the main link for network transmission through the link switching module.
Preferably, the link switching module and the fault detection module are arranged on the BFD linkage router,
connecting a main port of the BFD linkage router to a first virtual local area network of a switch;
connecting a standby port of the BFD linkage router and a data network port of the ad hoc network equipment to a second virtual local area network of the switch;
a tunnel network port of the self-organizing network equipment and a third virtual local area network connected to the switch are connected;
the main path is connected to the convergence ports of the first virtual port and the third virtual port.
Preferably, the system of the present invention further includes a base station and a core network, the core network and the base station are respectively provided with the BFD link router, the ad hoc network device and the switch, and a main path is provided between the base station and the core network.
Compared with the prior art, the invention has the beneficial effects that: when the main path is normal, network transmission is carried out through the main path, dependence on ad hoc network equipment is avoided, the stability of the main path is higher than that of a wireless path, and the handling performance and stability can be effectively improved; when the main channel has a fault, the network transmission is carried out through the self-networking equipment, so that the reliability of the network transmission is improved.
Drawings
Fig. 1 is a flow chart of a network transmission method of the present invention;
fig. 2 is a flow chart of a method of selecting a disaster backup link path;
FIG. 3 is a logical block diagram of a router, switch, and ad hoc network device;
FIG. 4 is a flow chart of a method for a router to switch a backup port and a primary port;
FIG. 5 is a diagram of a network topology;
FIG. 6 is a logical block diagram of the system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention is described in further detail below with reference to the attached drawing figures:
a network transmission method based on active/standby link switching, as shown in fig. 1, the method includes:
step 101: and judging whether the main link fails. The failure Detection method for the main link is more, for example, the failure Detection method for the main link is based on a Bidirectional Forwarding Detection protocol (BFD) or a Network Quality analysis technique (NQA), but is not limited thereto.
If yes, go to step 102: and switching to a disaster recovery link, wherein the disaster recovery link is formed by the ad hoc network device through a wireless access and/or a main access of the main link, and executing step 103. The wireless unit of the ad hoc network device is used for forming a wireless path, and the tunnel network port of the ad hoc network device is connected to the main path of the main link and is used as a part of the ad hoc network. The main path may typically consist of standard commercial equipment such as optical fibers, optical transmission equipment, point-to-point microwave, switches, routers, etc.
Step 103: and selecting a path of the disaster recovery link, and carrying out network transmission based on the selected path. When the main link fails, the main link is switched to the disaster recovery link, and a proper path is selected from the ad hoc network formed by the ad hoc network equipment for network transmission.
If not, go to step 104: and switching to the main link for network transmission.
In the invention, when the main channel is normal, network transmission is carried out through the main channel, dependence on ad hoc network equipment is avoided, and the stability of the main channel is higher than that of a wireless channel, so that the throughput performance and stability can be effectively improved; when the main channel has a fault, the network transmission is carried out through the self-networking equipment, so that the reliability of the network transmission is improved.
For the sake of clarity of the description of the invention, the names used in the present invention are explained: BFD is a network protocol for detecting faults between two forwarding points, is a bidirectional forwarding detection mechanism, can provide millisecond detection, and can realize rapid detection of links, and BFD can realize rapid convergence of routes by linking with upper layer routing protocols, thereby ensuring the continuity of services, and has been widely applied to various network devices. The NQA is a real-time network performance detection and statistics technology, and can be used for carrying out statistics on network information such as response time, network jitter, packet loss rate and the like.
As shown in fig. 2, in step 103, the method for selecting a disaster recovery link path includes:
step 201: and acquiring available paths of the disaster recovery link and paths passed by the paths, wherein the paths comprise a main path or a wireless path, and the paths can also be a combination of the main path and the wireless path.
Step 202: and calculating the cost sum of each path according to the cost of the path.
Step 203: and selecting the path according to the cost.
The path costs of each base station or node are calculated and combined into an optimal path, and network transmission is carried out based on the optimal path. The cost of each path may be preset or may be calculated through a cost function, for example, the cost of the main path is set to 1, and the cost of the wireless path is set to 2, at this time, the main path is preferentially used for network transmission.
Example 1
As shown in fig. 3, the active/standby link switching may be performed by a router and a switch:
a first virtual network VLAN1 connecting the primary port of router 1 to switch 2;
connecting the backup port of the router 1 and the data network port of the ad hoc network device 3 to the second virtual network VLAN2 of the switch 2;
a tunnel portal of ad hoc network device 3 and a third virtual network VLAN3 connected to switch 2;
the main path 4 is connected to the aggregation port Trunk of the first virtual network VLAN1 and the third virtual network VLAN 3.
The main port of the router 1 is connected to the switch 2 through a first virtual network VLAN1, and then connected to the main path 4 through a Trunk port Trunk to form a main link; the standby port of the router is connected with the data network port of the ad hoc network device through a second virtual network VLAN2, the ad hoc network device forms a wireless channel through a wireless network, the ad hoc network device is connected with the main channel through a tunnel network port and a third virtual network VLAN3, multiplexing of the main channel is carried out, and a disaster recovery standby link is formed. The router switches the main link and the standby link by switching the main port and the standby port or the interface address thereof, namely, the main link or the disaster recovery link is switched. And the virtual networks are distinguished through different VLANs so as to distinguish interface addresses of different IP network segments.
VLANs are known as virtual local area networks, and in a shared network, one physical segment is a broadcast domain. In a switched network, the broadcast domain may be a virtual network segment consisting of a set of arbitrarily selected layer-two network addresses (MAC addresses). The exchanger divides VLAN according to MAC address of the work station, VLAN is a kind of agreement proposed for solving broadcast problem and security of the Ethernet, it has increased VLAN header on the basis of Ethernet frame, divide users into smaller workgroup with VLAN ID, limit the users among different workgroups to visit each other, every workgroup is a virtual local area network. The virtual local area network has the advantages of limiting the broadcasting range, forming a virtual working group and dynamically managing the network. The Trunk function is to aggregate a plurality of physical ports of a switch together to form a logical physical port.
In the invention, the ports in the same virtual local area network can carry out data broadcasting, the ports of different virtual local area networks are mutually shielded, and the VLAN can be set through the IP address range of the interface or the port.
In a specific embodiment, the router is a BFD link router, and the switch is a two-layer switch. And the BFD linkage router and the two-layer exchanger form a three-layer exchanger. The selection of the main link and the disaster recovery link is performed by the BFD in cooperation with the policy routing, but is not limited thereto, and the selection may also be performed by a dynamic routing, for example, if the cost of a port or a path corresponding to the disaster recovery link is set to be higher, the dynamic routing protocol may automatically select a normal link with a low cost. However, the stability of the dynamic routing protocol is not high, the requirements on the performance and the function of the switching device are also high, and in addition, when the switching is performed to the disaster recovery link, the dynamic routing protocol consumes the precious bandwidth of the disaster recovery link. The other side reason of using the BFD linkage route is that most base station equipment and a core network support BFD, and the use cost is reduced. The BFD router is not limited to an independent device, and may be a board card or a module.
As shown in fig. 4, the method for switching the standby port and the primary port by the router includes:
step 401: a primary route is set for the primary port and a backup route is set for the backup port.
Step 402: and judging whether the main link fails.
If yes, go to step 403: deleting the main route from the route table of the router, carrying out network transmission through the standby route, and executing step 402;
if not, go to step 404: a master route is added to the routing table, network transmission is performed through the master route, and step 402 is performed.
Example 2
In a specific network, a network topology structure is shown in fig. 5, and includes a core network 11 and a plurality of base stations, where the core network 11 and the plurality of base stations are respectively provided with a BFD link router, a two-layer switch and an ad hoc network device, a main path adopts a wired path, when a fault occurs in the wired path 124 of the base station 12, the BFD link router 121 detects the fault, switches to a standby port, sends data to an adjacent ad hoc network device 123 through the two-layer switch 122, and selects a path of a disaster recovery backup link according to a cost: ad hoc network device 123-ad hoc network device 133 of base station 13-wired path 134-ad hoc network device 113-core network 11, through which network transmission is performed with core network 11.
For the base station 14, the wired path 144 is not damaged, and the wired path 144 is used for network transmission with the core network 11. For the base station 13, the wired path 134 has no fault, so the wired path 134 of the main link is still used for network transmission with the core network 1; at this time, the wired path 134 serves as the disaster recovery link of the base station 13 at the same time, and thus one base station maintains the main link and the disaster recovery link at the same time.
When detecting that the wired path 124 is restored to normal, the BFD router of the base station 12 is connected to the VLAN1 through the main port, and performs network transmission with the core network 11 through the wired path 124.
The present invention also provides a system for implementing the network transmission method, as shown in fig. 6, including a failure detection module 21, a link switching module 22 and a path selection module 23,
the failure detection module 21 is configured to detect whether a main link fails;
if a fault occurs, switching to a disaster recovery link through a link switching module 22, wherein the disaster recovery link is composed of ad hoc network equipment through a wireless access or a main access of a main link;
the path selection module 23 is configured to select a path of the disaster recovery link, and perform network transmission based on the path;
if no fault occurs, the link is switched to the main link for network transmission through the link switching module 22.
The link switching module and the fault detection module may be disposed on the BFD coordinated router, as shown in fig. 3, and connect a main port of the BFD coordinated router to a first virtual local area network of the switch; connecting a standby port of the BFD linkage router and a data network port of the ad hoc network equipment to a second virtual local area network of the switch; a tunnel network port of the self-organizing network equipment and a third virtual local area network connected to the switch are connected; the main path is connected to the convergence ports of the first virtual port and the third virtual port. And detecting the fault condition of the main link through the BFD linkage router, and switching the main port and the standby port according to the fault condition.
As shown in fig. 5, the system further includes a base station and a core network, the core network and the base station are respectively provided with the BFD link router, the ad hoc network device and the switch, and a main path is provided between the base station and the core network.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A network transmission method based on active/standby link switching is characterized in that the method comprises the following steps:
judging whether the main link fails or not;
if yes, switching to a disaster recovery link, wherein the disaster recovery link is formed by an ad hoc network device through a wireless access or a main access of a main link;
selecting a path of the disaster recovery link, and carrying out network transmission based on the selected path;
if not, switching to the main link for network transmission.
2. The network transmission method according to claim 1, wherein the primary link failure is detected by a bidirectional forwarding detection protocol or a network quality analysis technique.
3. The network transmission method according to claim 1, wherein switching of the main and standby links is performed by a router and a switch;
connecting a main port of the router to a first virtual local area network of the switch;
connecting the standby port of the router and the data network port of the ad hoc network device to a second virtual local area network of the switch;
a tunnel network port of the self-organizing network equipment and a third virtual local area network connected to the switch are connected;
the main path is connected to the convergence ports of the first virtual port and the third virtual port.
4. The network transmission method according to claim 3, wherein the router is a BFD link router and the switch is a two-layer switch.
5. The network transmission method according to claim 3, wherein the ad hoc network device constitutes a radio path through a wireless network.
6. The network transmission method according to claim 3, wherein the method for switching the standby port and the primary port by the router comprises:
step 401: setting a main route for the main port and setting a standby route for the standby port;
step 402: judging whether the main link fails or not;
if yes, go to step 403: deleting the main route from the route table of the router, carrying out network transmission through the standby route, and executing step 402;
if not, go to step 404: and adding a main route in the routing table, and carrying out network transmission through the main route.
7. The network transmission method according to claim 1, wherein the method of selecting the disaster-tolerant backup link path comprises:
acquiring an available path of a disaster recovery link and a path passed by the path;
calculating the cost combination of each path according to the cost of the path;
and selecting the path according to the cost.
8. A system for implementing the network transmission method according to any one of claims 1 to 7, comprising a failure detection module, a link switching module and a path selection module,
the fault detection module is used for detecting whether the main link fails;
if a fault occurs, switching to a disaster recovery link through the link switching module, wherein the disaster recovery link is composed of ad hoc network equipment through a wireless access or a main access of a main link;
the path selection module is used for selecting a path of the disaster recovery link and carrying out network transmission based on the path;
and if the fault does not occur, switching to the main link for network transmission through the link switching module.
9. The system of claim 8, wherein the link switching module and the failure detection module are disposed on a BFD gang router,
connecting a main port of the BFD linkage router to a first virtual local area network of a switch;
connecting a standby port of the BFD linkage router and a data network port of the ad hoc network equipment to a second virtual local area network of the switch;
a tunnel network port of the self-organizing network equipment and a third virtual local area network connected to the switch are connected;
the main path is connected to the convergence ports of the first virtual port and the third virtual port.
10. The system according to claim 9, further comprising a base station and a core network, wherein the base station and the core network are respectively provided with the BFD coordinated router, the ad hoc network device and the switch, and a main path is provided between the base station and the core network.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116566479A (en) * | 2023-07-10 | 2023-08-08 | 广东电网有限责任公司佛山供电局 | Data transmission system, method, equipment and medium of distribution line |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1816035A (en) * | 2005-02-02 | 2006-08-09 | 华为技术有限公司 | Master-spare transmission route realizing method based on data telecommunication network |
| US7093027B1 (en) * | 2002-07-23 | 2006-08-15 | Atrica Israel Ltd. | Fast connection protection in a virtual local area network based stack environment |
| CN101657031A (en) * | 2009-08-27 | 2010-02-24 | 杭州华三通信技术有限公司 | Communication method of wireless mesh network and movable access point |
| CN102546222A (en) * | 2010-12-07 | 2012-07-04 | 中国电信股份有限公司 | Backup system and fault detection and processing method |
| CN105227904A (en) * | 2015-08-26 | 2016-01-06 | 深圳市信锐网科技术有限公司 | Data transmission method, device and web camera |
| CN105744549A (en) * | 2016-02-03 | 2016-07-06 | 宇龙计算机通信科技(深圳)有限公司 | Transmission path switching method, terminal and system |
| CN106954243A (en) * | 2017-04-12 | 2017-07-14 | 江苏中科羿链通信技术有限公司 | Route implementation method based on wireless chain network |
| US20180302807A1 (en) * | 2015-04-15 | 2018-10-18 | Nokia Solutions And Networks Oy | Self-Organizing Network Concepts for Small Cells Backhauling |
| CN111641557A (en) * | 2020-06-02 | 2020-09-08 | 西安电子科技大学 | Minimum cost backup path method for delay tolerant network |
| CN111711535A (en) * | 2020-06-03 | 2020-09-25 | 广州维德科技有限公司 | Multi-standard integrated communication system |
-
2021
- 2021-02-04 CN CN202110158553.XA patent/CN112994929A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7093027B1 (en) * | 2002-07-23 | 2006-08-15 | Atrica Israel Ltd. | Fast connection protection in a virtual local area network based stack environment |
| CN1816035A (en) * | 2005-02-02 | 2006-08-09 | 华为技术有限公司 | Master-spare transmission route realizing method based on data telecommunication network |
| CN101657031A (en) * | 2009-08-27 | 2010-02-24 | 杭州华三通信技术有限公司 | Communication method of wireless mesh network and movable access point |
| CN102546222A (en) * | 2010-12-07 | 2012-07-04 | 中国电信股份有限公司 | Backup system and fault detection and processing method |
| US20180302807A1 (en) * | 2015-04-15 | 2018-10-18 | Nokia Solutions And Networks Oy | Self-Organizing Network Concepts for Small Cells Backhauling |
| CN105227904A (en) * | 2015-08-26 | 2016-01-06 | 深圳市信锐网科技术有限公司 | Data transmission method, device and web camera |
| CN105744549A (en) * | 2016-02-03 | 2016-07-06 | 宇龙计算机通信科技(深圳)有限公司 | Transmission path switching method, terminal and system |
| CN106954243A (en) * | 2017-04-12 | 2017-07-14 | 江苏中科羿链通信技术有限公司 | Route implementation method based on wireless chain network |
| CN111641557A (en) * | 2020-06-02 | 2020-09-08 | 西安电子科技大学 | Minimum cost backup path method for delay tolerant network |
| CN111711535A (en) * | 2020-06-03 | 2020-09-25 | 广州维德科技有限公司 | Multi-standard integrated communication system |
Non-Patent Citations (3)
| Title |
|---|
| YANG JIANJUN; FENG BIN; LIU YINGKUN: "Method for Optimizing the Wire Bonding Shape by the RF Simulation Software", 《MICRONANOELECTRONIC TECHNOLOGY》 * |
| 周永塔: "基于链路稳定性的Ad Hoc网络多播路由协议仿真与分析", 《信息技术与网络安全》 * |
| 陈力云: "重庆高速公路收费网络备用数据链路方案设计", 《中国交通信息化》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116566479A (en) * | 2023-07-10 | 2023-08-08 | 广东电网有限责任公司佛山供电局 | Data transmission system, method, equipment and medium of distribution line |
| CN116566479B (en) * | 2023-07-10 | 2023-12-01 | 广东电网有限责任公司佛山供电局 | Data transmission system, method, equipment and medium of distribution line |
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