CN107257300B - A kind of 4G access devices of wireless backup, system and method - Google Patents

A kind of 4G access devices of wireless backup, system and method Download PDF

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Publication number
CN107257300B
CN107257300B CN201710677197.6A CN201710677197A CN107257300B CN 107257300 B CN107257300 B CN 107257300B CN 201710677197 A CN201710677197 A CN 201710677197A CN 107257300 B CN107257300 B CN 107257300B
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China
Prior art keywords
private network
access devices
terminal
wire link
network server
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CN107257300A (en
Inventor
康灿荣
段学文
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Shenzhen city extension putel Technology Co. Ltd.
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Shenzhen City Extension Putel Technology Co Ltd
Guangzhou Da Da Communication Co Ltd
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Priority to CN201710677197.6A priority Critical patent/CN107257300B/en
Publication of CN107257300A publication Critical patent/CN107257300A/en
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06Management of faults, events, alarms or notifications
    • H04L41/0654Management of faults, events, alarms or notifications using network fault recovery
    • H04L41/0668Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46Interconnection of networks
    • H04L12/4641Virtual LANs, VLANs, e.g. virtual private networks [VPN]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00Arrangements for monitoring or testing data switching networks
    • H04L43/08Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0811Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity

Abstract

The invention discloses a kind of 4G access devices of wireless backup, including Layer2 switching unit, wire link detection unit, link switching unit and network management alarm unit;Layer2 switching unit, between access terminal and region convergence router;Wire link detection unit, if breaking down, sends fault-signal to link switching unit and network management alarm unit for detecting whether wire link breaks down;Link switching unit establishes Virtual Private Network for the wire link between terminal and private network server to be isolated, and between 4G access devices and the connection equipment of connection private network server;Network management alarm unit, into without existing private network network is transformed, is configured for transmitting alarm signal to network management platform by the Virtual Private Network without changing terminal, so that it may which to realize wireless backup, and it is few to inject capital into, and builds and maintenance workload is few.The invention also discloses a kind of wireless backup system and its methods.

Description

A kind of 4G access devices of wireless backup, system and method
Technical field
The present invention relates to the communication technologys, more particularly to a kind of 4G access devices of wireless backup, system and method.
Background technology
Private network as a kind of covering specific region, for the communication network of properties object service, because its can meet some industries, The communications such as department or internal institution organized, are kept the safety in production, dispatch control and widely disposed and used.Mesh Before, the existing private network disposed is typically by terminal and region aggregation gateway router connection communication, the signal warp of terminal transmission Private network server, then the network management platform by being connect with private network platform are transmitted to each by region convergence router and private network platform A equipment is monitored.
To improve the reliability and disaster ability to bear of link, need to increase link backup on the existing private network disposed Scheme, in the communications field, traditional link backup scheme usually has following two:
1, increase a new wire link.This mode not only needs to expend a large amount of fund cost, but also has additional It can also be constructed, safeguarded also all highly difficult by limitations such as resource, environment when line circuit.In addition, using double Wirelines be easy because Dependent failure characteristic and the case where break down simultaneously, improve the ineffective of the reliability of link.
2, the 4G routers for increasing by three layers of networking make circuit backup.This mode is that uplink is logical by Wireline and private network Letter, and downlink is to provide network access facility, and the communication function with private network is provided for terminal by three-layer routing mode.Due to very More private network projects, early period, network deployment was directly entered region convergence switch to terminal using two layers of GPON networks, if increased The 4G routers of three layers of networking make circuit, need to transform front end double layer network as three-layer network, while needing to re-start IP Address is planned, and completes the configuration modification of all terminals, and workload and cost are very huge.In addition, whole carrying out network It during transformation, when reconfiguring IP, can not be disposed on demand, then during carrying out the network rebuilding, the same area convergence is handed over Changing planes down all terminals connect all can not normal use.
Invention content
Based on this, the object of the present invention is to provide a kind of 4G access devices of wireless backup, have existing without transformation Some private network networks, without changing terminal configuration, infusion of financial resources is few, builds and maintenance workload is few, data have been effectively ensured The advantages of security and reliability.
A kind of 4G access devices of wireless backup, including Layer2 switching unit, wire link detection unit, link switching list Member and network management alarm unit;
The Layer2 switching unit, between access terminal and region convergence router, realize successively from terminal, two layers The wire link connection of crosspoint, region convergence router, private network platform to private network server;
The wire link detection unit, if breaking down, sends event for detecting whether wire link breaks down Hinder signal to the link switching unit and network management alarm unit;
The link switching unit, the fault-signal sent for receiving the wire link detection unit, and by terminal Wire link between private network server is isolated, and enables 4G networks, is established with the connection equipment for connecting private network server empty Quasi- dedicated network, so that terminal realizes the interaction of communication data with private network server by the Virtual Private Network;
The network management alarm unit, for transmitting alarm signal to network management platform by the Virtual Private Network;
When whether detection wire link breaks down, the wire link detection unit is specifically used for obtaining terminal respectively With the IP-MAC of region convergence router, and the IP-MAC for imitating terminal builds specific icmp packet, and will according to acl rule The specific icmp packet is sent to private network server via region convergence router and private network platform;The wire link detection Unit is additionally operable to receive the response message of private network server feedback, and does not receive the response report of private network server transmission in time-out Fault-signal is sent to the link switching unit and network management alarm unit by Wen Shi.
Compared with the prior art, the present invention is led to by accessing 4G access devices between terminal and region convergence router Crossing the 4G access devices ensures the Layer2 switching of the communication data of wire link between terminal and private network platform, and by terminal Specific ICMP detections packet is transmitted between private network platform, accurately to detect whether wire link breaks down, and in wired chain When road is broken down, the wireless backup that Virtual Private Network realizes terminal and private network platform is established by 4G access devices, is not necessarily to Existing private network network is transformed, so that it may which to realize wireless backup, and it is few to inject capital into, and builds and maintenance workload is few, effectively protect The security and reliability of data is demonstrate,proved.
Further, the wire link detection unit is additionally operable to whether detection wire link failure repairs, if wired chain Road fault restoration then sends repair signal to the link switching unit;The link switching unit is additionally operable to have described in reception The repair signal that wired link detection unit is sent, and Virtual Private Network and 4G networks are disconnected, and restore to set from terminal, 4G accesses The wire link connection of standby, region convergence router, private network platform to private network server;
When whether detection wire link failure repairs, the wire link detection unit is specifically used for through former wired link Specific icmp packet is sent to private network server, and receives the response message of private network server feedback;The wire link inspection Unit is surveyed when receiving the response message of the private network server transmitted respectively via wire link or Virtual Private Network, is sent Repair signal is to the link switching unit.
Further, Virtual Private Network and 4G networks are disconnected, when restoring wire link connection, the link switching list Member is specifically used for first deleting the IP address for being used on connection terminal network interface and connecting equipment connection, and then disconnects Virtual Private Network Network;It in connection equipment according to the Virtual Private Network of disconnection, is pushed and is route to private network with ospf protocol, deletion terminal is walked wireless When routing, the link switching unit be additionally operable to disconnect 4G networks, connect from terminal, 4G access devices, region convergence router, The wire link of private network platform to private network server connects.
The present invention also provides a kind of wireless backup system, including terminal, region convergence router, private network platform, webmaster are flat Platform and private network server;Terminal is connect with region convergence router;Region convergence router and the downlink of the private network platform connect It connects, the network management platform and private network server are connect with the uplink of the private network platform respectively, further include 4G access devices and company Connect equipment;
The 4G access devices are connected between the terminal and region convergence router, are realized successively from terminal, two layers of friendship Change the wire link connection of unit, region convergence router, private network platform to private network server;The connection equipment connects private network Platform and 4G wireless networks;
The 4G access devices detect whether the wire link breaks down, if breaking down, the 4G access devices Wire link between terminal and private network server is isolated, and enables 4G networks, 4G access devices with connect private network service Virtual Private Network is established between the connection equipment of device, is led to so that terminal is realized with private network server by the Virtual Private Network The interaction of letter data, and the 4G access devices transmit alarm signal by the Virtual Private Network to network management platform;
When whether detection wire link breaks down, the 4G access devices obtain terminal and region convergence routing respectively The IP-MAC of device, and the IP-MAC for imitating terminal builds specific icmp packet, and reported the specific ICMP according to acl rule Text is sent to private network server via the region convergence router and private network platform;The 4G access devices also receive private network clothes The response message for device feedback of being engaged in, and when time-out does not receive the response message of private network server transmission, judgement is broken down.
Further, the 4G access devices are additionally operable to whether detection wire link failure repairs, if wire link failure It repairs, then disconnects Virtual Private Network and 4G networks, and restore flat from terminal, 4G access devices, region convergence router, private network The wire link of platform to private network server connects;
Wherein, when whether detection wire link failure repairs, the 4G access devices are specifically used for passing through original line chain Road direction private network server sends specific icmp packet, and receives the response message of private network server feedback;If receiving difference Via the response message for the private network server that wire link or Virtual Private Network transmit, then the 4G access devices judgement is wired Link failure reparation;Otherwise, it is determined that wire link failure is not repaired.
The present invention also provides a kind of wireless backup methods, include the following steps:
Step 1:A 4G access devices are accessed between terminal and region convergence router, are realized by the 4G access devices It is connected successively from the wire link of terminal, 4G access devices, region convergence router, private network platform to private network server;
Step 2:Whether 4G access devices detection wire link breaks down, if breaking down, jumps to step 3;
Step 3:4G access devices are isolated by the wire link between terminal and private network server, and enable 4G networks, Virtual Private Network is established between 4G access devices and the connection equipment for connecting private network server, so that terminal and private network server The interaction of communication data is realized by the Virtual Private Network;
Step 4:4G access devices transmit alarm signal by the Virtual Private Network to network management platform;
In the step 2, the mode whether 4G access devices detection wire link breaks down includes:
Step 21:4G access devices obtain the IP-MAC of terminal and region convergence router respectively;
Step 22:The IP-MAC that 4G access devices imitate terminal builds specific icmp packet, and should according to acl rule Specific icmp packet is sent to private network server via region convergence router and private network platform;
Step 23:4G access devices receive the response message of private network server feedback, if time-out does not receive private network service When the response message that device is sent, then 4G access devices judge that the wire link breaks down.
Further, further comprising the steps of:
Step 5:Whether 4G access devices detection wire link failure repairs, if repairing, jumps to step 6;
Step 6:When 4G access devices detect wire link fault restoration, Virtual Private Network and 4G networks are disconnected, and Restore to connect from the wire link of terminal, 4G access devices, region convergence router, private network platform to private network server;
In the step 5, the mode whether 4G access devices detection wire link failure repairs includes:
Step 51:4G access devices send specific icmp packet by original wired link to private network server;
Step 52:4G access devices receive the response message of private network server feedback, if receiving respectively via wired chain Road or Virtual Private Network transmission private network server response message, then 4G access devices judge wire link fault restoration.
Compared with the prior art, the present invention is led to by accessing 4G access devices between terminal and region convergence router Crossing the 4G access devices ensures the Layer2 switching of the communication data of wire link between terminal and private network platform, and by terminal Specific ICMP detections packet is transmitted between private network platform, accurately to detect whether wire link breaks down, and in wired chain When road is broken down, the wireless backup that Virtual Private Network realizes terminal and private network platform is established by 4G access devices, is not necessarily to Existing private network network is transformed, so that it may which to realize wireless backup, and it is few to inject capital into, and builds and maintenance workload is few, effectively protect The security and reliability of data is demonstrate,proved.
In order to better understand and implement, the invention will now be described in detail with reference to the accompanying drawings.
Description of the drawings
Fig. 1 is the schematic diagram of wireless backup system in the embodiment of the present invention 1;
Fig. 2 is the flow chart of wireless backup system in the embodiment of the present invention 2;
Fig. 3 is the particular flow sheet of step 2 in Fig. 2;
Fig. 4 is the particular flow sheet of step 5 in Fig. 3;
Fig. 5 is the structural schematic diagram of 4G access devices in embodiment 3;
Fig. 6 is the circuit diagram of 4G access devices in embodiment 3.
Specific implementation mode
Embodiment 1
Referring to Fig. 1, its schematic diagram for wireless backup system in the embodiment of the present invention 1.The wireless backup system, including Terminal 1, region convergence router 2, private network platform 3, network management platform 4, private network server 5,4G access devices 6 and connection equipment 7. Terminal 1 is connect with region convergence router 2;Region convergence router 2 is connect with the downlink of the private network platform 3, the webmaster Platform 4 and private network server 5 are connect with the uplink of the private network platform 3 respectively.The 4G access devices 6 are connected to the terminal 1 Between region convergence router 2, realize successively from terminal 1, Layer2 switching unit, region convergence router 2, private network platform 3 Wire link to private network server 5 connects;The connection equipment 7 connects private network platform 3 and 4G wireless networks 8.
In one embodiment, the connection equipment 7 is wireless network cut-in convergent route.
The 4G access devices 6 are additionally operable to detect whether the wire link breaks down, if breaking down, the 4G connects Enter equipment 6 wire link between terminal 1 and private network server 5 is isolated, and enable 4G networks, in 4G access devices 6 and even It connects and establishes Virtual Private Network between the connection equipment 7 of private network server 5, so that terminal 1 is virtual by this with private network server 5 Dedicated network realizes the interaction of communication data, and the 4G access devices 6 are additionally operable to put down to webmaster by the Virtual Private Network Platform 4 transmits alarm signal.
When whether detection wire link breaks down, the 4G access devices 6 are specifically used for obtaining terminal 1 and area respectively The IP-MAC of domain convergence router 2;The 4G access devices 6 build specific also particularly useful for the IP-MAC for imitating terminal 1 Icmp packet, and be sent to the specific icmp packet via region convergence router 2 and private network platform 3 according to acl rule Private network server 5, and receive the response message of 5 feedback of private network server;If time-out does not receive the sound of the transmission of private network server 5 When answering message, then the 4G access devices 6 judge that the wire link breaks down.
The concrete mode for obtaining the IP-MAC of terminal 1 and region convergence router 2 is:The 4G access devices 6 are first distinguished To the ARP request packet that terminal 1 and 2 transmission source IP of region convergence router are 0.0.0.0, and terminal 1 is received respectively and region is converged The arp response message that poly- router 2 is fed back, terminal 1 and region convergence router 2 are obtained further according to the arp response message respectively IP-MAC.
In one embodiment, the 4G access devices 6 are additionally operable to whether detection wire link failure repairs, if failure is repaiied It is multiple, then Virtual Private Network and 4G networks are disconnected, and restore from terminal 1,4G access devices 6, region convergence router 2, private network The wire link of platform 3 to private network server 5 connects;
Wherein, when whether detection wire link failure repairs, the 4G access devices 6 are specifically used for passing through original line chain Road direction private network server 5 sends specific icmp packet, and receives the response message of the feedback of private network server 5;If receiving point The response message for the private network server 5 not transmitted via wire link or Virtual Private Network, the then judgement of 4G access devices 6 Wire link fault restoration;Otherwise, it is determined that wire link failure is not repaired.
It is in the concrete mode for disconnecting Virtual Private Network and 4G networks by 4G access devices 6:4G access devices 6 are deleted The IP address for being used on connection 1 network interface of terminal and connecting the connection of equipment 7, and then disconnect Virtual Private Network;Connect 7 basis of equipment The Virtual Private Network of disconnection is pushed to private network with ospf protocol and is route, and is deleted terminal 1 and is walked wireless routing;Then, 4G is accessed Equipment 6 disconnects 4G networks, connects from terminal 1,4G access devices 6, region convergence router 2, private network platform 3 to private network server 5 wire link connection.
Compared with the prior art, the present invention is led to by accessing 4G access devices between terminal and region convergence router Crossing the 4G access devices ensures the Layer2 switching of the communication data of wire link between terminal and private network platform, and by terminal Specific ICMP detections packet is transmitted between private network platform, accurately to detect whether wire link breaks down, and in wired chain When road is broken down, the wireless backup that Virtual Private Network realizes terminal and private network platform is established by 4G access devices, is not necessarily to Existing private network network is transformed, so that it may which to realize wireless backup, and it is few to inject capital into, and builds and maintenance workload is few, effectively protect The security and reliability of data is demonstrate,proved.
Embodiment 2
Referring to Fig. 2, its flow chart for wireless backup system in the embodiment of the present invention 2.The present invention also provides a kind of nothings Line backup method, includes the following steps:
Step 1:A 4G access devices are accessed between terminal and region convergence router, are realized by the 4G access devices It is connected successively from the wire link of terminal, 4G access devices, region convergence router, private network platform to private network server.
Before by 4G access devices access terminal and region convergence router, the 4G for pre-setting the 4G access devices matches It sets, the address configuration of VPN configurations and terminal and region convergence router, into without changing the connection of existing private network 4G access devices are accessed, realize wireless backup.
After 4G access devices access terminal and region convergence router, the 4G access devices are by terminal and region convergence road Same VLAN is divided to by device, terminal is made directly to carry out Layer2 switching with private network server.
Step 2:Whether 4G access devices detection wire link breaks down, if breaking down, jumps to step 3.
In one embodiment, if 4G access devices detection wire link does not break down, terminal and private network server Between or communicated using wire link.
Referring to Fig. 3, its particular flow sheet for step 2 in Fig. 2.
In the step 2, the mode whether 4G access devices detection wire link breaks down includes:
Step 21:4G access devices obtain the IP-MAC of terminal and region convergence router respectively.
The mode for obtaining the IP-MAC of terminal and region convergence router includes:4G access devices are respectively to terminal and region Convergence router transmission source IP is the ARP request packet of 0.0.0.0;Terminal and region convergence router receive the ARP request respectively Packet, and respectively arp response message is fed back to 4G access devices;4G access devices obtain terminal respectively according to the arp response message With the IP-MAC of region convergence router.
Step 22:The IP-MAC that 4G access devices imitate terminal builds specific icmp packet, and should according to acl rule Specific icmp packet is sent to private network server via region convergence router and private network platform.
In one embodiment, it fills specific mark in the identifier fields of icmp packet and then is formed specific Icmp packet.
Step 23:4G access devices receive the response message of private network server feedback, if time-out does not receive private network service When the response message that device is sent, then 4G access devices judge that the wire link breaks down.
When 4G access devices time-out does not receive the response message of private network server transmission, illustrate 4G access devices and area The link connection between link connection or region convergence router and private network platform between the convergence router of domain is disconnected, I.e. terminal to the wire link between private network server breaks down.
Step 3:4G access devices are isolated by the wire link between terminal and private network server, and enable 4G networks, Virtual Private Network is established between 4G access devices and the connection equipment for connecting private network server, so that terminal and private network server The interaction of communication data is realized by the Virtual Private Network.
In one embodiment, connection equipment is a convergence router.The network interface of terminal will be connected on 4G access devices On come into force the IP address of convergence router, after starting 4G dialing, 4G access devices just establish the void with convergence router Quasi- dedicated network.It connects equipment and routing is pushed to private network platform by ospf protocol to the reverse route of Virtual Private Network.
Step 4:4G access devices transmit alarm signal by the Virtual Private Network to network management platform.
Step 5:Whether 4G access devices detection wire link failure repairs, if repairing, jumps to step 6.
In one embodiment, it is still used if wire link failure is not repaired, between terminal and private network server virtual Dedicated network interacts.
Referring to Fig. 4, its particular flow sheet for step 5 in Fig. 3.
In the step 5, the mode whether 4G access devices detection wire link failure repairs includes:
Step 51:4G access devices send specific icmp packet by original wired link to private network server;
Step 52:4G access devices receive the response message of private network server feedback, if receiving respectively via wired chain Road or Virtual Private Network transmission private network server response message, then 4G access devices judge wire link fault restoration.
Step 6:When 4G access devices detect wire link fault restoration, Virtual Private Network and 4G networks are disconnected, and Restore to connect from the wire link of terminal, 4G access devices, region convergence router, private network platform to private network server.
In the step 6, include in such a way that 4G access devices disconnect Virtual Private Network and 4G networks:4G accesses are set It is standby to delete the IP address for being used on connection terminal network interface and connecting equipment connection, and then disconnect Virtual Private Network;Connect equipment It according to the Virtual Private Network of disconnection, is pushed and is route to private network with ospf protocol, deleted terminal and walk wireless routing;Then, 4G Access device disconnects 4G networks, connects from terminal, 4G access devices, region convergence router, private network platform to private network server Wire link connection.
Compared with the prior art, the present invention is led to by accessing 4G access devices between terminal and region convergence router Crossing the 4G access devices ensures the Layer2 switching of the communication data of wire link between terminal and private network platform, and by terminal Specific ICMP detections packet is transmitted between private network platform, accurately to detect whether wire link breaks down, and in wired chain When road is broken down, the wireless backup that Virtual Private Network realizes terminal and private network platform is established by 4G access devices, is not necessarily to Existing private network network is transformed, so that it may which to realize wireless backup, and it is few to inject capital into, and builds and maintenance workload is few, effectively protect The security and reliability of data is demonstrate,proved.
Embodiment 3
Referring to Fig. 5, its structural schematic diagram for 4G access devices in embodiment 3.The present invention also provides a kind of wireless standby The 4G access devices of part include Layer2 switching unit 01, wire link detection unit 02, link switching unit 03 and network management alarm Unit 04.
The Layer2 switching unit 01, between access terminal and region convergence router, realizing successively from terminal, two The wire link connection of layer crosspoint, region convergence router, private network platform to private network server.
The wire link detection unit 02, if breaking down, is sent for detecting whether wire link breaks down Fault-signal is to the link switching unit 03 and network management alarm unit 04.
When whether detection wire link breaks down, the wire link detection unit 02 is specifically used for obtaining respectively eventually The IP-MAC at end and region convergence router.
The link switching unit 03, the fault-signal sent for receiving the wire link detection unit 02, and will Wire link between terminal and private network server is isolated, and enable 4G networks, 4G access devices with connect private network server Connection equipment between establish Virtual Private Network so that terminal and private network server are communicated by Virtual Private Network realization The interaction of data.
The network management alarm unit 04, for transmitting alarm signal to network management platform 09 by the Virtual Private Network.Institute It states network management alarm unit and alarm signal is sent to network management platform using SNMP TRAP agreements, network management platform then by sending barrier automatically Function sends failure notification to webmaster personnel.
Wherein, when whether detection wire link breaks down, the wire link detection unit 02 is specifically used for difference The IP-MAC of terminal and region convergence router is obtained, and imitates the specific icmp packet of IP-MAC structures of terminal, and according to The specific icmp packet is sent to private network server by acl rule via region convergence router and private network platform;It is described to have Wired link detection unit 02 is additionally operable to receive the response message of private network server feedback, and does not receive private network server in time-out When the response message of transmission, fault-signal is sent to the link switching unit and 03 and network management alarm unit 04.
The mode for obtaining the IP-MAC of terminal and region convergence router is:The wire link detection unit 02 is first distinguished To the ARP request packet that terminal and region convergence router transmission source IP are 0.0.0.0, then terminal and region convergence road are received respectively The arp response message fed back by device, finally obtains the IP- of terminal and region convergence router respectively according to the arp response message MAC。
In one embodiment, the wire link detection unit 02 is additionally operable to whether detection wire link failure repairs, If fault restoration, repair signal is sent to the link switching unit 03.Wherein, whether repaired in detection wire link failure When, the wire link detection unit 02 is specifically used for sending specific ICMP reports to private network server by original wired link Text, and receive the response message of private network server feedback;The wire link detection unit 02 is receiving respectively via wired When the response message of link or the private network server of Virtual Private Network transmission, repair signal is sent to the link switching unit 03。
The link switching unit 03 is additionally operable to receive the repair signal that the wire link detection unit 02 is sent, and disconnects Virtual Private Network and 4G networks, and restore to take from terminal, 4G access devices, region convergence router, private network platform to private network The wire link connection of business device.
Wherein, it disconnects Virtual Private Network and the mode of 4G networks is, the link switching unit 03 first deletes connection eventually The IP address for being used on the network interface of end and connecting equipment connection, and then disconnect Virtual Private Network;In connection equipment according to disconnection Virtual Private Network is pushed to private network with ospf protocol and is route, when deletion terminal walks wireless routing, the link switching unit 03 disconnects 4G networks again, and connection has from terminal, 4G access devices, region convergence router, private network platform to private network server Wired link connects.
Referring to Fig. 6, its circuit diagram for 4G access devices in embodiment 3.
In one embodiment, the Layer2 switching unit 01 is an exchange chip, model AR8337;Wire link Detection unit 02, link switching unit 03 and network management alarm unit 04 are integrated in central processing unit, model AR9344;Its The ports P1 of middle exchange chip are connect with region convergence router, and the ports P2-P5 of exchange chip are separately connected terminal, exchange core The ports P6 of piece connect SFP interface devices;The ports P0 of exchange chip are connect with central processing unit, and central processing unit passes through MDIO Interface configures exchange chip.The USB interface of central processing unit connects a 4G modules, and by the 4G modules be separately connected SIM card, 4G antennas and GPS antenna;The RF2G interfaces of central processing unit connect WiFi antennas;Central processing unit is also connected with NOR FLASH moulds The peripheral equipments such as block, DDR2 modules, power module, reseting module.
Compared with the prior art, the present invention is led to by accessing 4G access devices between terminal and region convergence router Crossing the 4G access devices ensures the Layer2 switching of the communication data of wire link between terminal and private network platform, and by terminal Specific ICMP detections packet is transmitted between private network platform, accurately to detect whether wire link breaks down, and in wired chain When road is broken down, the wireless backup that Virtual Private Network realizes terminal and private network platform is established by 4G access devices, is not necessarily to Existing private network network is transformed, so that it may which to realize wireless backup, and it is few to inject capital into, and builds and maintenance workload is few, effectively protect The security and reliability of data is demonstrate,proved.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention Range.

Claims (10)

1. a kind of 4G access devices of wireless backup, it is characterised in that:Including Layer2 switching unit, wire link detection unit, Link switching unit and network management alarm unit;
The Layer2 switching unit, between access terminal and region convergence router, realizing successively from terminal, Layer2 switching The wire link connection of unit, region convergence router, private network platform to private network server;
The wire link detection unit, if breaking down, sends failure letter for detecting whether wire link breaks down Number arrive the link switching unit and network management alarm unit;
The link switching unit, the fault-signal sent for receiving the wire link detection unit, and by terminal and specially Wire link isolation between network server, and 4G networks are enabled, it is established with the connection equipment for connecting private network server virtual special With network, so that terminal passes through the interaction that the Virtual Private Network realizes communication data with private network server;
The network management alarm unit, for transmitting alarm signal to network management platform by the Virtual Private Network;
When whether detection wire link breaks down, the wire link detection unit is specifically used for obtaining terminal and area respectively The IP-MAC of domain convergence router, and the IP-MAC for imitating terminal builds specific icmp packet, and according to acl rule by the spy Fixed icmp packet is sent to private network server via region convergence router and private network platform;The wire link detection unit It is additionally operable to receive the response message of private network server feedback, and the response message of private network server transmission is not received in time-out When, fault-signal is sent to the link switching unit and network management alarm unit.
2. the 4G access devices of wireless backup according to claim 1, it is characterised in that:The wire link detection unit It is additionally operable to whether detection wire link failure repairs, if wire link fault restoration, sends repair signal and cut to the link Change unit;The link switching unit is additionally operable to receive the repair signal that the wire link detection unit is sent, and disconnects void Quasi- dedicated network and 4G networks, and restore from terminal, 4G access devices, region convergence router, private network platform to private network service The wire link of device connects;
Whether when detecting wire link failure and repairing, the wire link detection unit is specifically used for through former wired link to special Network server sends specific icmp packet, and receives the response message of private network server feedback;The wire link detection is single Member sends and repairs when receiving the response message of the private network server transmitted respectively via wire link or Virtual Private Network Signal is to the link switching unit.
3. the 4G access devices of wireless backup according to claim 1, it is characterised in that:Disconnect Virtual Private Network and 4G networks, restore wire link connection when, the link switching unit be specifically used for first delete connection terminal network interface on for The IP address of equipment connection is connected, and then disconnects Virtual Private Network;In connection equipment according to the Virtual Private Network of disconnection, use Ospf protocol is pushed to private network and is route, and when deletion terminal walks wireless routing, the link switching unit is additionally operable to disconnect 4G nets Network is connected and is connected from the wire link of terminal, 4G access devices, region convergence router, private network platform to private network server.
4. a kind of wireless backup system, including terminal, region convergence router, private network platform, network management platform and private network server; Terminal is connect with region convergence router;Region convergence router is connect with the downlink of the private network platform, the network management platform It is connect respectively with the uplink of the private network platform with private network server, it is characterised in that:Further include that 4G access devices and connection are set It is standby;
The 4G access devices are connected between the terminal and region convergence router, are realized successively from terminal, 4G access devices Layer2 switching unit, region convergence router, private network platform to private network server wire link connection;The connection equipment Connect private network platform and 4G wireless networks;
The 4G access devices detect whether the wire link breaks down, if breaking down, the 4G access devices will be whole End is isolated with the wire link between private network server, and enables 4G networks, 4G access devices with connect private network server Virtual Private Network is established between connection equipment, so that terminal communicates number with private network server by Virtual Private Network realization According to interaction, and the 4G access devices by the Virtual Private Network to network management platform transmit alarm signal;
Whether when detecting wire link and breaking down, the 4G access devices obtain terminal and region convergence router respectively IP-MAC, and the IP-MAC for imitating terminal builds specific icmp packet, and passed through the specific icmp packet according to acl rule Private network server is sent to by the region convergence router and private network platform;The 4G access devices also receive private network server The response message of feedback, and when time-out does not receive the response message of private network server transmission, judgement is broken down.
5. wireless backup system according to claim 4, it is characterised in that:The 4G access devices are additionally operable to detect wired Whether link failure is repaired, if wire link fault restoration, disconnects Virtual Private Network and 4G networks, and restore from terminal, The wire link connection of 4G access devices, region convergence router, private network platform to private network server;
Wherein, detect wire link failure whether repair when, the 4G access devices be specifically used for by original wired link to Private network server sends specific icmp packet, and receives the response message of private network server feedback;If receive respectively via The response message of wire link or the private network server of Virtual Private Network transmission, then the 4G access devices judge wire link Fault restoration;Otherwise, it is determined that wire link failure is not repaired.
6. wireless backup system according to claim 5, it is characterised in that:The connection equipment is for providing from 4G networks The interface of private network platform is accessed, and contains authentication and the encrypted Virtual Private Network of data for providing, and is used for foundation The routing that the state of Virtual Private Network is changed using OSPF to private network platform push terminal.
7. a kind of wireless backup method, it is characterised in that:Include the following steps:
Step 1:A 4G access devices are accessed between terminal and region convergence router, are realized successively by the 4G access devices From terminal, the wire link of the Layer2 switching unit of 4G access devices, region convergence router, private network platform to private network server Connection;
Step 2:Whether 4G access devices detection wire link breaks down, if breaking down, jumps to step 3;
Step 3:4G access devices are isolated by the wire link between terminal and private network server, and enable 4G networks, are connect in 4G Enter and establish Virtual Private Network between equipment and the connection equipment for connecting private network server, so that terminal passes through with private network server The Virtual Private Network realizes the interaction of communication data;
Step 4:4G access devices transmit alarm signal by the Virtual Private Network to network management platform;
In the step 2, the mode whether 4G access devices detection wire link breaks down includes:
Step 21:4G access devices obtain the IP-MAC of terminal and region convergence router respectively;
Step 22:The IP-MAC that 4G access devices imitate terminal builds specific icmp packet, and according to acl rule that this is specific Icmp packet be sent to private network server via region convergence router and private network platform;
Step 23:4G access devices receive the response message of private network server feedback, if time-out does not receive private network server hair When the response message sent, then 4G access devices judge that the wire link breaks down.
8. wireless backup method according to claim 7, it is characterised in that:It is further comprising the steps of:
Step 5:Whether 4G access devices detection wire link failure repairs, if repairing, jumps to step 6;
Step 6:When 4G access devices detect wire link fault restoration, Virtual Private Network and 4G networks are disconnected, and restore It is connected from the wire link of terminal, 4G access devices, region convergence router, private network platform to private network server;
In the step 5, the mode whether 4G access devices detection wire link failure repairs includes:
Step 51:4G access devices send specific icmp packet by original wired link to private network server;
Step 52:4G access devices receive the response message of private network server feedback, if receive respectively via wire link or Virtual Private Network transmission private network server response message, then 4G access devices judge wire link fault restoration.
9. wireless backup method according to claim 8, it is characterised in that:In step 21,4G access devices respectively to Terminal and the ARP request packet that region convergence router transmission source IP is 0.0.0.0, and terminal and region convergence routing are received respectively The arp response message of device feedback, and the IP-MAC of terminal and region convergence router is obtained according to the arp response message respectively.
10. wireless backup method according to claim 8, it is characterised in that:In the step 6, pass through 4G access devices Disconnection Virtual Private Network and the mode of 4G networks include:4G access devices, which are deleted, to be used on connection terminal network interface and connect equipment The IP address of connection, and then disconnect Virtual Private Network;Equipment is connected according to the Virtual Private Network of disconnection, with ospf protocol to Private network push routing, deletes terminal and walks wireless routing;4G access devices disconnect 4G networks again, connect and are set from terminal, 4G accesses The wire link connection of standby, region convergence router, private network platform to private network server.
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