CN106656311A - Data link backup apparatus and method - Google Patents
Data link backup apparatus and method Download PDFInfo
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- CN106656311A CN106656311A CN201611161371.3A CN201611161371A CN106656311A CN 106656311 A CN106656311 A CN 106656311A CN 201611161371 A CN201611161371 A CN 201611161371A CN 106656311 A CN106656311 A CN 106656311A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
- H04B10/0775—Performance monitoring and measurement of transmission parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/27—Arrangements for networking
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0668—Management 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
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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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- 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
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/35—Switches specially adapted for specific applications
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computing Systems (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Cardiology (AREA)
- General Health & Medical Sciences (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention discloses a data link backup apparatus and method. The apparatus comprises a first microwave transmission device and a second microwave transmission device; a first packet transmission device and a second packet transmission device; a first switching unit separately connected with the first microwave transmission device and the first packet transmission device and used for automatically detecting communication conditions of a master link and a backup link and realizing automatic switch according to the communication conditions of the master link and the backup link; and a second switching unit separately connected with the second microwave transmission device and the second packet transmission device and used for automatically detecting communication conditions of the master link and the backup link and realizing automatic switch according to the communication conditions of the master link and the backup link. In order to prevent a conflict with a public network ring or a redundancy protocol, the switch adopts a protocol ring protocol to detect the communication of the links and convert the ports of the master link and the backup link, and when the master link is faulty, the master link and the backup link are automatically switched through an EBS switch, and thus the transmission efficiency is improved.
Description
Technical field
The present invention relates to the technical field of link backup, and in particular to data link back-up device and method.
Background technology
In backbone device connection, the connection of single link is easily achieved, but a simple failure will result in
The interruption of network.Therefore during real network is set up, in order to keep the stability of network, multiple stage group of switches into
In network environment, some backup connections are generally used, to improve vigorousness, the stability of network.
As shown in figure 1, for traditional data link standby system, it is micro- that 8 road ethernet data-links are respectively connecting to first
The service port of ripple transmission equipment and the first packet transfer device, Jing the first packet transfer device outfans are connected to by optical cable
Second packet transmission equipment input interface, by second packet transmission equipment 8 road Ethernet datas are restored, and second packet transmission sets
Standby service port is additionally coupled to respectively the second microwave transport equipment.In the present system, first, second microwave transport equipment is horse
Can Buddhist nun's microwave equipment, first and second packet transfer device be Huawei PTN (Packet Transport Network；Packet transmission
Net) equipment；The link that first and second packet transfer device is provided is active link, and first, second microwave transport equipment is used as standby
Link, as shown in Figure 2 and Figure 3, switch is user access networks switch in figure, and when optical cable normal work, data are by primary
Link is transmitted；When submarine optical fiber cable failure, manually the netting twine for being connected to the first packet transfer device need to be jumped to into first micro-
, so as to realize ethernet data-link backup manually, but there is following asking in the transmission of the enterprising row data of ripple transmission equipment
Topic, this manual recovery had not only consumed manpower but also had lost time.Network from find to interrupt to the time recovered it is not only partially long but also
Uncertain, the delay for causing data transfer is even lost.
In view of this, being badly in need of offer one kind can automatically detect active link and reserve link communication conditions, and active and standby line
Road can auto switching data link back-up device and method, replace artificial technical scheme.
The content of the invention
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention there is provided a kind of data link backup dress
Put, including the first microwave transport equipment and the second microwave transport equipment；The first packet transfer device connected by optical cable and the
Two packet transfer devices；Also include：
Be connected with the first microwave transport equipment and the first packet transfer device respectively and for automatically detection active link and
Reserve link communication conditions, and the first crosspoint for realizing automatically switching according to the communication conditions of primary, spare link；
Be connected with the second microwave transport equipment and second packet transmission equipment respectively and for automatically detection active link and
Reserve link communication conditions, and the second crosspoint for realizing automatically switching according to the communication conditions of primary, spare link.
It is described in such scheme
First crosspoint includes the service port pair with first microwave transport equipment and the first packet transfer device
Multiple first switches that should be arranged；
Second crosspoint includes the business end with second microwave transport equipment and second packet transmission equipment
Multiple second switch that mouth is correspondingly arranged；
The plurality of first switch and the plurality of second switch include realizing the data exchange of data exchange respectively
Unit and Auto-Sensing link open circuit situation and it is automatically performed the link switching unit of primary, spare link switching.
It is described in such scheme
Data exchange unit includes chip 88E6097F；The data exchange unit is provided with least 4 road Ethernet interfaces, point
The data access port FE1 of ethernet link, active link port FE2, reserve link port FE3 and webmaster, tune Wei not connected
Examination port FE4；
Active link port FE2 arbitrarily connects the service port FE1～FE8 of packet transfer device；Reserve link port FE3
The arbitrarily service port FE1～FE8 of connection microwave transport equipment.
It is described in such scheme
Link switching unit includes realizing to first switch or the active link port FE2 of the second switch
The isolation of data message and between the FE3 of reserve link port, detecting link open circuit situation, and the EBS of the primary, spare link of control cut
Change and realize the chip AT91SAM9260 of the function of link backup.
It is described in such scheme
First switch or the second switch are using the detection of privately owned ring protocol realization connectivity of link and primary, spare
The conversion that link is used, constitute ring two switches possess identical ring mark ID, and ring in contain and also only one of which hand over
Change owner node, another is exchanged for transmission node；Host node timing sends heartbeat message, and from node the heartbeat message is forwarded；
The heartbeat message that the link switching unit judges are received, when active link breaks down, active link end
Mouth FE2 receives LINK DOWN or the heart beating of 3 loss, and the link switching unit enables reserve link port FE3 transmission numbers
According to and block active link port；
When active link port FE2 receives LINK UP or receives 3 subnormal heart beating, the link switching unit
Enable active link port FE2 and block reserve link port FE3.
In such scheme, the time of the primary, spare link switching is 4ms～50ms.
Present invention also offers a kind of data link backup method, comprises the following steps：
S1, receive user end send data extremely；
S2, the on off operating mode of system detection active link port, according to result of detection, automatically switch to active link port
Or reserve link port transmission data.
In the above-mentioned methods, it is described
Step S2 specifically includes following steps：
Host node timing sends heartbeat message, and the heartbeat message is forwarded to active link port from node；Judge to receive
The heartbeat message for arriving, if the heartbeat message content for receiving is LINK UP or 3 subnormal heart beatings, switches to active link end
Oral instructions transmission of data simultaneously blocks reserve link port；If heartbeat message content be LINK DOWN or 3 times loss heart beating, switch to
Reserve link port transmission data simultaneously block active link port.
In the above-mentioned methods, the host node is per second sends a heartbeat message.
In the above-mentioned methods, the time of primary, spare link switching is 4ms～50ms.
To prevent and public network ring or redundancy protocol conflict, this switch is connected the present invention using privately owned ring protocol realization link
The detection and the conversion of primary, spare link port of the general character, it is automatically complete by EBS switching switches when active link breaks down
Into the switching of active and standby link, so as to improve efficiency of transmission.
Description of the drawings
The topological diagram of the conventional data link standby system that Fig. 1 is provided for the present invention；
Fig. 2 is in schematic diagram during normal operating conditions for Fig. 1；
Fig. 3 is in schematic diagram during failure for Fig. 1 optical cables；
The topological diagram of the link backup switch that Fig. 4 is provided for the present invention；
Fig. 5 is in schematic diagram during normal operating conditions for Fig. 4；
Fig. 6 is in schematic diagram during failure for Fig. 4 optical cables；
The link backup switchboard panel schematic diagram that Fig. 7 is provided for the present invention；
Fig. 8 provides the flow chart of link backup exchange method for the present invention；
Fig. 9 is the flow chart for implementing step of S2 in Fig. 8.
Specific embodiment
To prevent and public network ring or redundancy protocol conflict, this switch is connected the present invention using privately owned ring protocol realization link
The detection and the conversion of primary, spare link port of the general character, it is automatically complete by EBS switching switches when active link breaks down
Into the switching of active and standby link, so as to improve efficiency of transmission.With reference to specific embodiment and Figure of description to the present invention
It is described in detail.
Above-described embodiment describes the specific works content of transmission data from left to right, and the present invention is standby to provide data link
Part device for bi-directional transfer of data device, due to the operation principle of bi-directional transfer of data it is identical, therefore in following embodiment
In, operation principle when transmitting from left to right to one transmission data of elaboration.
As shown in figure 4, the invention provides a kind of link backup switch, abbreviation microwave and optical fiber prepared auto restart technology, bag
Include：
First microwave transport equipment and the second microwave transport equipment；First microwave transport equipment and the second microwave transport equipment
For Marconi microwave transport equipment.
First packet transfer device and second packet transmission equipment；First packet transfer device and second packet transmission equipment
Connected by optical cable for Huawei's PTN device, and the first packet transfer device and second packet transmission equipment.
Be connected with the first microwave transport equipment and the first packet transfer device respectively and for automatically detection active link and
Reserve link communication conditions, and the first crosspoint 10 for realizing automatically switching according to the communication conditions of primary, spare link；
Be connected with the second microwave transport equipment and second packet transmission equipment respectively and for automatically detection active link and
Reserve link communication conditions, and the second crosspoint 20 for realizing automatically switching according to the communication conditions of primary, spare link；
First crosspoint 10 includes 8 the first switches 101.Second crosspoint 20 includes 8 second switch
201.All first switches 101 and second switch 201 include realizing respectively the data exchange unit of data exchange and automatically
Detect link open circuit situation and be automatically performed the link switching unit of primary, spare link switching.
Data exchange unit includes chip 88E6097F, realizes data exchange；Data exchange unit is provided with 4 road Ethernets
Interface, respectively connect ethernet link data access port FE1, active link port FE2, reserve link port FE3 and
Webmaster, debugging port FE4.After system electrification, all switches will be automatically performed initial configuration, dry without the need for resetting
In advance；All switches are designed for card insert type, using 4U Aluminum Alloy Chassis, at most provide 16 slots, and electric power system is the double electricity of 1+1
Source it is hot standby power supply and alternating current-direct current is optional.
The reserve link port FE3 of 8 the first switches 101 connects respectively the service port of the first microwave transport equipment
FE1～FE8, the active link port FE2 of 8 the first switches 101 connects respectively the service port of the first packet transfer device
FE1～FE8.
The reserve link port FE3 of 8 second switch 201 connects respectively the service port of the second microwave transport equipment
FE1～FE8, the active link port FE2 of 8 second switch 201 connects respectively the service port of second packet transmission equipment
FE1～FE8.
Link switching unit includes chip AT91SAM9260, realizes the active link port FE2 to switch and standby
The isolation of data message between link port FE3, detecting link open circuit situation, and the EBS for controlling primary, spare link
(Electric Braking System, electronic air brake) switches, and realizes the function of link backup；
When user data transports to data access port FE1, if when active link and the normal equal link of reserve link, link is cut
Changing unit will block reserve link port FE3, and the data between data access port FE1 and active link port FE2 normally turn
Send out transmission；When link switching unit detects active link port FE2 link failures, then link switching unit enables standby
Link simultaneously blocks active link port FE2, and now, user data will be by data access port FE1 and reserve link port FE3
Normal transmission between port.
The present embodiment can also can complete SNMP (Simple Network Management Protocol, Simple Network according to the demand of client
Management Protocol) management, WEB (WWW, World Wide Web) management and CLI I (command-line
Interface, Command Line Interface) management.
The concrete operating principle of the present embodiment is as follows：
As shown in Figure 5, Figure 6, to prevent public network and ring or redundancy protocol conflict, all first in the present embodiment exchange
The detection and turning that primary, spare link is used of machine 101 or second switch 201 using privately owned ring protocol realization connectivity of link
Change, to enable isolation group, two switches for constituting ring possess identical to active link port FE2 and reserve link port FE3
Contain and only one of which switched major node in ring mark ID, and ring, another is exchanged for transmission node.Host node timing 1 second
Transmission link connectedness probe messages, i.e. heartbeat message, from node this heartbeat message is forwarded.Link switching unit judges are received
Heartbeat message, when optical cable is connected as failure, active link port FE2 will receive LINK DOWN or 3 times loss the hearts
Jump, then link switching unit enables reserve link port FE3 transmission datas and blocks active link port；When active link port
When FE2 receives LINK UP or receives 3 subnormal heart beating, illustrate that now active link port FE2 recovers normal, link is cut
Change unit then to enable active link port FE2 and block reserve link port FE3；Above-mentioned link switching process abbreviation taking turn clock skill
Art.The present embodiment switch detects active link and reserve link communication conditions automatically, and is automatically performed by EBS handoff functionalities
The switching of primary, spare link, so as to improve efficiency of transmission.The time of primary, spare link switching is 4ms～50ms, most soon
4ms, most slow 50ms.
As shown in fig. 7, the link backup switchboard panel schematic diagram provided for the present invention, is described in detail below panel subscript
The meaning of note symbol：
Model FE-129B is respectively plug in tray link backup switch and Table top type link backup switch with FE-119B.
Display lamp is illustrated (from top to bottom)：
Power supply --- power supply indicator, green, power input is normally often bright, and power input is gone out or flashed often extremely.
Operation --- system operation display lamp, green, system normally runs the second of time and dodges (going out 1 second within bright 1 second), during system exception
It is often bright or often go out.
Master port --- master port forwarding state display lamp, green, port is often bright in forwarding state, in obstruction shape
State is gone out often.
Standby port --- standby port forwarding state display lamp, green, port is often bright in forwarding state, in obstruction shape
State is gone out often.
Protection port indicates：(port position number：1)
Activity 1 --- port ACTIVE state display lamp, green, has message to flash when forwarding, and forwards often without message
Go out.
Link 1 --- port LINK status indicator lamps, green, link is normal often bright, and link is abnormal to go out or flash often.
Master port is indicated：(port position number：2)
Activity 2 --- port ACTIVE state display lamp, green, has message to flash when forwarding, and forwards often without message
Go out.
Link 2 --- port LINK status indicator lamps, green, link is normal often bright, and link is abnormal to go out or flash often.
Standby port indicates：(port position number：3)
Activity 3 --- port ACTIVE state display lamp, green, has message to flash when forwarding, and forwards often without message
Go out.
Link 3 --- port LINK status indicator lamps, green, link is normal often bright, and link is abnormal to go out or flash often.
Debugging port indicates：(port position number：4)
Activity 4 --- port ACTIVE state display lamp, green, has message to flash when forwarding, and forwards often without message
Go out.
Link 4 --- port LINK status indicator lamps, green, link is normal often bright, and link is abnormal to go out or flash often.
Dial-up operation instruction：
Two toggle switch are had, is applied in combination, be described as follows：(from top to bottom)
ON OFF --- hand-operated forced use master port (port position number：2)；
OFF ON --- it is hand-operated forced using standby port (port position number：3)；
ON ON or OFF OFF --- programme-control, is selected using master port or standby port by Automatic Program；
It should be noted that：It is hand-operated forced using certain Single port when, another port will be into resting state, programme-control work(
Can close, the hand-operated forced port for using is active normally forwarding report.
As shown in figure 8, the data link backup method based on said apparatus also provided for the present invention, including following step
Suddenly：
S1, receive user end send data extremely.
S2, the on off operating mode of system detection active link port, according to result of detection, automatically switch to active link port
Or reserve link port transmission data.
As shown in figure 9, above-mentioned steps S2 specifically include following steps：
S21, host node timing transmission link connectedness probe messages, i.e. heartbeat message；
S22, this heartbeat message is forwarded from node to active link port.The present embodiment is per second to send a connectivity of link
Probe messages；
The heartbeat message that S23, judgement are received, if the heartbeat message content for receiving is LINK UP or the 3 subnormal hearts
Jump, then turn S24；If heartbeat message content is LINK DOWN or the heart beating of 3 loss, turn S25.
S24, reserve link port is switched to active link port transmission data and blocked, and turn S22.
S25, active link port is switched to reserve link port transmission data and blocked, and turn S22.
Above-mentioned whole link switching step abbreviation taking turn clock technology, the primary, spare link in data link backup method is cut
The time changed is 4ms～50ms, most fast 4ms, most slow 50ms.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the knot made under the enlightenment of the present invention
Structure change, it is every with of the invention with same or like technical scheme, each fall within protection scope of the present invention.
Claims (10)
1. data link back-up device, it is characterised in that including the first microwave transport equipment and the second microwave transport equipment；Pass through
First packet transfer device and second packet transmission equipment of optical cable connection；Also include：
It is connected with the first microwave transport equipment and the first packet transfer device respectively and for automatically detection active link and standby
Link communication situation, and the first crosspoint for realizing automatically switching according to the communication conditions of primary, spare link；
It is connected with the second microwave transport equipment and second packet transmission equipment respectively and for automatically detection active link and standby
Link communication situation, and the second crosspoint for realizing automatically switching according to the communication conditions of primary, spare link.
2. data link back-up device as claimed in claim 1, it is characterised in that described
First crosspoint includes set corresponding with the service port of first microwave transport equipment and the first packet transfer device
Multiple first switches put；
Second crosspoint includes the service port pair with second microwave transport equipment and second packet transmission equipment
The multiple second switch that should be arranged；
The plurality of first switch and the plurality of second switch include realizing the data exchange unit of data exchange respectively
With Auto-Sensing link open circuit situation and it is automatically performed the link switching unit of primary, spare link switching.
3. data link back-up device as claimed in claim 2, it is characterised in that described
Data exchange unit includes chip 88E6097F；The data exchange unit is provided with least 4 road Ethernet interfaces, respectively
The data access port FE1 of connection ethernet link, active link port FE2, reserve link port FE3 and webmaster, debugging end
Mouth FE4；
Active link port FE2 arbitrarily connects the service port FE1～FE8 of packet transfer device；FE3 is any for reserve link port
Service port FE1～the FE8 of connection microwave transport equipment.
4. data link back-up device as claimed in claim 2, it is characterised in that described
Link switching unit includes realizing the active link port FE2 to first switch or the second switch and standby
With the isolation of data message between link port FE3, detecting link open circuit situation, and control primary, spare link EBS switchings and
Realize the chip AT91SAM9260 of the function of link backup.
5. data link back-up device as claimed in claim 4, it is characterised in that described
The detection and primary, spare link of first switch or the second switch using privately owned ring protocol realization connectivity of link
The conversion for using, constitute ring two switches possess identical ring mark ID, and ring in contain and also only one of which exchange master
Node, another is exchanged for transmission node；Host node timing sends heartbeat message, and from node the heartbeat message is forwarded；
The heartbeat message that the link switching unit judges are received, when active link breaks down, active link port FE2
LINK DOWN or the heart beating of 3 loss are received, the link switching unit enables reserve link port FE3 transmission data simultaneously
Obstruction active link port；
When active link port FE2 receives LINK UP or receives 3 subnormal heart beating, the link switching unit is enabled
Active link port FE2 simultaneously blocks reserve link port FE3.
6. data link back-up device as claimed in claim 2, it is characterised in that the switching of the primary, spare link when
Between be 4ms～50ms.
7. data link backup method, it is characterised in that comprise the following steps：
S1, receive user end send data extremely；
S2, the on off operating mode of system detection active link port, according to result of detection, automatically switch to active link port or standby
Use link port transmission data.
8. data link backup method as claimed in claim 7, it is characterised in that described
Step S2 specifically includes following steps：
Host node timing sends heartbeat message, and the heartbeat message is forwarded to active link port from node；What judgement was received
Heartbeat message, if the heartbeat message content for receiving is LINK UP or 3 subnormal heart beatings, switches to active link port and passes
Transmission of data simultaneously blocks reserve link port；If heartbeat message content is LINK DOWN or the heart beating of 3 loss, switch to standby
Link port transmission data simultaneously blocks active link port.
9. data link backup method as claimed in claim 8, it is characterised in that described
Host node is per second to send a heartbeat message.
10. data link backup method as claimed in claim 8, it is characterised in that the time of primary, spare link switching is
4ms～50ms.
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|---|---|---|---|
| CN201611161371.3A CN106656311A (en) | 2016-12-15 | 2016-12-15 | Data link backup apparatus and method |
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|---|---|---|---|
| CN201611161371.3A CN106656311A (en) | 2016-12-15 | 2016-12-15 | Data link backup apparatus and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107395271A (en) * | 2017-09-15 | 2017-11-24 | 南方电网科学研究院有限责任公司 | The method and system of fiber link UNICOM state instruction |
| CN110912839A (en) * | 2019-12-24 | 2020-03-24 | 北京东土军悦科技有限公司 | Main and standby switch detection method, system, terminal and storage medium |
| CN112311618A (en) * | 2019-08-02 | 2021-02-02 | 北京东土科技股份有限公司 | Test method and test equipment of network switching equipment |
| CN112954722A (en) * | 2021-01-26 | 2021-06-11 | 深圳震有科技股份有限公司 | System and method for rapidly switching 5G UPF (unified power flow) main link and standby link |
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