CN110113258A - A kind of method and system using control plane chain circuit automatic protection data surface link - Google Patents
A kind of method and system using control plane chain circuit automatic protection data surface link Download PDFInfo
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- CN110113258A CN110113258A CN201910330550.2A CN201910330550A CN110113258A CN 110113258 A CN110113258 A CN 110113258A CN 201910330550 A CN201910330550 A CN 201910330550A CN 110113258 A CN110113258 A CN 110113258A
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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
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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Abstract
The present invention relates to a kind of method and systems using control plane chain circuit automatic protection data surface link, which comprises collects full mesh topology information by controller；The primary path that operation exchange between transmission node is established in data surface link establishes the backup path of operation exchange between transmission node；The backup path and control plane link are combined, building combining link；Detect the link failure situation of the primary path and backup path；Carry out primary path and backup path automatically according to link failure situation cuts movement.The new construction that the present invention passes through design transmission node equipment; then issuing flow entry in former control plane link circuit resource by controller is data surface primary path creation backup path; redundancy protecting to primary path in data surface link is provided; service communication is avoided because link failure interrupts, further improves the reliability of SDN network communication.
Description
Technical field
The invention belongs to telecommunication management facility technology fields, in particular to a kind of to utilize control plane chain circuit automatic protection data
The method and system of face link.
Background technique
Software defined network (Software Defined Network, SDN) technology is a kind of new network of Emulex network innovation framework,
It is a kind of mode for realizing network virtualization.It mainly include two class equipment: controller, transmission node in SDN.The core of SDN framework
Thought is want to separate the control plane (control plane) of the network equipment with data surface (data plane), transmission node
The control interface of open programmable carries out centralized control by transmission node of the centrally located controller to whole network, realizes
Network new function abundant, flexibly control and schedule network resources, meet fast-developing network demand.Wherein, control plane refers to
Network interconnection and relevant control behavior between controller and transmission node, data surface refer to network interconnection between transmission node and
Related data transmits behavior.The specific data transmission behavior of data surface will depend on the specific controlling behavior of control plane, lead to
Normal controller is controlled it by issuing data forwarding flow entry (flow table) into transmission node, and the process of issuing can
Follow some consensus standards promulgated, such as Openflow agreement, Netconf agreement, OVSDB agreement etc..Fig. 1 is that SDN is whole
Body structural schematic diagram.
SDN is there are two types of control mode: band control and with outer control.
With outer control, refer to that transmission node connects controller, multiple transmission nodes and control using independent control plane port
The connection of device processed needs an independent network to run.Under normal conditions, which realizes.
But due to needing to set up independent control torus network, tradition as shown in Figure 2 with outer control in existing SDN technology
SDN transmission node device structure schematic diagram, apparent disadvantage are to need to put into more network equipment resources and lattice chain
Road resource, and data surface and control plane respectively exclusively enjoy related network resources, the meeting so that data surface link once breaks down
Directly result in network interconnection and the failure of related data transfer capability between transmission node.
A kind of new SDN control mode is needed thus, data surface link is sufficiently avoided to break down, and leads to entire SDN
The case where framework is paralysed.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of method using control plane chain circuit automatic protection data surface link,
It is characterized in that, which comprises
Full mesh topology information is collected by controller；
The primary path that operation exchange between transmission node is established in data surface link, establishes industry between transmission node
The backup path of business exchange；
The backup path and control plane link are combined, building combining link；
Detect the link failure situation of the primary path and backup path；
Carry out primary path and backup path automatically according to link failure situation cuts movement.
Preferably, the full mesh topology information includes transmission node information, network port information and link interconnection information.
Preferably, the transmission node information includes bypass ports information corresponding with the network port.
Preferably, which is characterized in that the controller issues data forwarding flow entry to each biography by control plane
Node is sent to establish the primary path, the controller downlink protection flow entry establishes the backup path.
Preferably, according to the bypass ports pair of the network port corresponding informance of the primary path and the backup path
Information is answered to issue the link protection flow entry.
Preferably, carry out hop behavior or multi-hop behavior on the primary path, the backup path to primary path into
The redundancy protecting of row hop-by-hop.
Preferably, the backup path and control plane link are established by wavelength-division multiplex technique is combined link.
Preferably, the controller is that the primary path and the backup path cooperate and bind corresponding link event
Barrier detection session, detects link failure situation by link failure detection session.
Preferably, when the fault detection conversation report primary path failure, for the jump that link failure occurs, exchange
Business data flow automatically according to flow entry is switched to the one of corresponding backup path by plate to be jumped onto and protects.
A kind of system using control plane chain circuit automatic protection data surface link, the friendship including being connected to adjacent transmission node
Change the data surface link between plate, the primary path as operation exchange between transmission node；
And the bypass channel in the transmission node and combining module are set, the power board is logical by the bypass
Road is connected to the combining module, connection combining link between the combining module of the adjacent transmission node, by described
The backup path of bypass channel and the combining link as operation exchange between the transmission node；
Master control borad in the transmission node is connected with combining module, by being combined module for backup path and control plane chain
Road combining is connected to combining link.
Preferably, the power board includes the network port and bypass ports, between the power board of two adjacent groups transmission node
Data surface link is connected by the network port, power board connects bypass channel by bypass ports, and the bypass channel is connected to
It is combined module.
Preferably, the power board includes the network port of at least two groups, and the friendship of business datum is carried out by the network port
It changes.
Preferably, the power board includes the bypass ports of at least two groups, the bypass ports and the network port one
One is corresponding.
Preferably, the network port and bypass ports are all made of ethernet port.
Preferably, the combining module includes photoelectric conversion module, Wavelength division multiplexing module and combining port, the photoelectricity
Conversion module is connect with Wavelength division multiplexing module, Wavelength division multiplexing module connection combining port, the combining mould of two adjacent groups transmission node
Block passes through combining port connection combining link；
Photoelectric conversion module has two-way function, for carrying out the optical signal route of specific wavelength and the phase of Electrical signal lines
Mutually conversion；
The Wavelength division multiplexing module has two-way function, carries out mutually converting for a plurality of optical link and optical link.
Preferably, the bypass channel is arranged on backboard.
The beneficial effects of the present invention are:
1, then the present invention issues flow entry at former control plane by controller by the new construction of design transmission node equipment
Backup path is created for data surface primary path in link circuit resource, the redundancy protecting to primary path in data surface link is provided,
Service communication is avoided because link failure interrupts, further improves the reliability of SDN network communication；
2, in the new construction of present invention design SDN transmission node, increase bypass channel, the newly-increased bypass of power board on backboard
The bypass channel on backboard is accessed in port, and the bypass that the control port of master control borad is also changed on Bypass Control port access backboard is logical
Road；Secondly, increasing combining module, photoelectric conversion module, Wavelength division multiplexing module are included, it can be by bypass ports and Bypass Control port
Bypass channel be combined after transmit；
3, when fault detection conversation report primary path failure, for the jump that link failure occurs, the automatic root of power board
It business data flow is switched to the one of corresponding backup path according to flow entry jumps onto and protect, which cuts through journey and do not need
The participation of controller.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, right
Pointed structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 shows SDN overall structure diagram according to prior art；
Fig. 2 shows traditional SDN transmission node device structure schematic diagrams；
Fig. 3 shows the system using control plane chain circuit automatic protection data surface link；
Fig. 4 shows the flow chart of the invention using control plane chain circuit automatic protection data surface link；
Fig. 5 shows output setting after software model is handled according to a variety of inputs outside control of the invention
The schematic block diagram of user_failover type group table flag bit Flag；
Fig. 6 shows external software model process flow diagram of the invention；
Fig. 7 shows the access schematic diagram that the present invention breaks down when cutting protection.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention clearly and completely illustrated, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
A method of utilizing control plane chain circuit automatic protection data surface link, comprising:
Full mesh topology information is collected by controller, the full mesh topology information includes transmission node information, the network port
Information and link interconnection information, controller are based on SDN basic principle and collect full mesh topology information, including transmission node, network-side
The information such as mouth, link interconnection.In addition, transmission node also reports bypass ports information corresponding with the network port.
It notices the bypass ports of power board and the network port is all logically ethernet port, difference is network
On panel, bypass ports are connected on backboard bypass channel for port.Therefore according to SDN basic principle, bypass ports and network-side
Mouth can be reported to controller by transmission node in the collecting topology stage.Only in the present invention, on transmission node wants additional
Report the corresponding informance of the network port and bypass ports, such as the corresponding bypass ports 1 of the network port 1, the corresponding bypass end of the network port 2
Mouth 2.
The primary path of operation exchange between transmission node is established in data surface link, controller is according to user to business
Planning, by combining link in control plane issue data forwarding flow entry to each transmission node, data forwarding flow entry
It is issued to the master control borad of each transmission node, master control borad determines the master of operation exchange between power board according to data forwarding flow entry
Use path；The backup path of operation exchange is established between transmission node, controller checks the network port that primary path uses,
And flow entry is protected according to the network port and the corresponding informance downlink of bypass ports, link protection flow entry is issued to each
The master control borad of transmission node, master control borad are controlled according to power board of the link protection flow entry to network node where master control borad
System, using the bypass channel of power board and the backup path of combining link establishment operation exchange, by backup path to business
The primary path of exchange carries out the redundancy protecting of hop-by-hop.
The backup path and control plane link are combined, building combining link, backup path and control plane link pass through
Wavelength-division multiplex technique building combining link.Specifically, the bypass channel and master control borad of backup path pass through photoelectric conversion module
Photoelectric conversion work is carried out, the optical signal for converting electrical signals to specific wavelength carries out independent transmission, later by individual transmission
The optical signal of specific wavelength is combined by Wavelength division multiplexing module and is transmitted in an optical link, and is transmitted to the wave of adjacent transmission node
Divide Multiplexing module；The Wavelength division multiplexing module of neighboring station carries out branch to single ray road, according to the wave of optical signal in single ray road
It is long to be divided into a plurality of circuit output, and export to corresponding photoelectric conversion module, optical signal is turned again by photoelectric conversion module
Electric signal is turned to, and electric signal is respectively sent to master control borad and power board.
Detect the link failure situation of the primary path and backup path.The controller is the primary path and institute
It states backup path cooperation and binds corresponding link failure detection session, link failure is detected by link failure detection session
Situation.When fault detection conversation reports primary path failure, for the jump that link failure occurs, power board is automatically according to stream
Business data flow is switched to the one of corresponding backup path by list item to be jumped onto and protects.
For above-mentioned control method, a kind of system using control plane chain circuit automatic protection data surface link is proposed, such as
Shown in Fig. 3, relative to traditional SDN network, firstly, increasing bypass channel on backboard, power board increases bypass ports access newly
Bypass channel on backboard, the control port of master control borad are also changed to the bypass channel on Bypass Control port access backboard；Secondly,
Increase combining module, includes photoelectric conversion module, Wavelength division multiplexing module, bypass ports and the bypass of Bypass Control port can be led to
Road transmits after being combined to be demultiplexed in receiving end again again.Wherein, photoelectric conversion module can be by the multichannel ether of bypass channel
Net electric signal is converted to multichannel Ethernet optical signal, and Wavelength division multiplexing module can be by multichannel Ethernet optical signal modulation to different
Optical wavelength on, be then unified in being transmitted in optical fiber link all the way, the Ethernet optical signal of different wave length is not interfere with each other, respectively
Sufficient transmission bandwidth is enjoyed, receiving end can also solve multichannel Ethernet optical signal from optical fiber link all the way.Increase combining
After module, combining port is provided by combining module and is used for network interconnection, wherein containing the network interconnection of control plane.
It is illustrated with the communication mode between two groups of transmission nodes (transmission node X and transmission node X+1), every group of transmission
It include one group of master control borad and n group power board (n is any positive integer) in node, master control borad is equipped with Bypass Control port 1 and side
Road control port 2, bypass ports and the network port are all provided on every group of power board, and bypass ports include bypass ports 1 and bypass end
Mouth 2, the network port includes the network port 1 and the network port 2.The power board of two adjacent groups transmission node passes through data surface link one
It is correspondingly connected with to one, illustratively, the network port 2 of the power board 1 of transmission node X passes through data surface link connection transmission node
The network port 2 of the network port 1 of the power board 1 of X+1, the power board n of transmission node X passes through data surface link connection transmission section
The network port 1 of the power board n of point X+1.
The bypass ports of power board are connected to the bypass channel being arranged on backboard, the Bypass Control port of master control borad and
The bypass channel of power board is connected to combining module, and combining is established between two groups of adjacent transmission nodes by being combined module
Link.Being combined module includes photoelectric conversion module, two groups of Wavelength division multiplexing module (WDM, Wavelength Division
Multiplexing) and two combine road ports, and bypass channel and Bypass Control port are connected to photoelectric conversion module, photoelectricity
Conversion module connects Wavelength division multiplexing module, and Wavelength division multiplexing module passes through combining port connection combining link.
Illustratively, the bypass ports 2 of the power board 1 of transmission node X pass sequentially through the bypass channel of transmission node X, light
Electrotransformation module, Wavelength division multiplexing module 2, combining port 2 are connected to transmission node X+1, and the combining port 2 of transmission node X according to
The secondary friendship that transmission node X+1 is connected to by the combining port 1 of transmission node X+1, Wavelength division multiplexing module 1, photoelectric conversion module
Change the bypass ports 1 of plate 1, with this construct transmission node X power board 1 and transmission node X+1 power board 1 between primary path
Backup path, to primary path carry out redundancy protecting.Wherein, the exchange of the power board 1 and transmission node X+1 of transmission node X
Backup path between plate 1 carries out Ethernet electric signal by photoelectric conversion module and wavelength is λ1Optical signal mutually turn
Change, wavelength λ1Optical signal by Wavelength division multiplexing module merge combining link transmission, and by Wavelength division multiplexing module will close
Optical signal behind road is isolated, and the corresponding ports of photoelectric conversion module are transmitted to.Likewise, the power board n of transmission node X is bypassed
Port 2 passes sequentially through the bypass channel of transmission node X, photoelectric conversion module, Wavelength division multiplexing module 2, combining port 2 are connected to biography
Send nodes X+1, and the combining port 2 of transmission node X successively by the combining port 1 of transmission node X+1, Wavelength division multiplexing module 1,
Photoelectric conversion module is connected to the bypass ports 1 of the power board 1 of transmission node X+1, with this construct power board 1 and power board 2 it
Between primary path backup path, to primary path carry out redundancy protecting.Wherein, the power board n and transmission node of transmission node X
Backup path between the power board n of X+1 carries out Ethernet electric signal by photoelectric conversion module and wavelength is λnOptical signal
Mutual inversion of phases, wavelength λnOptical signal merged by Wavelength division multiplexing module in combining link transmission, and pass through wavelength-division multiplex
Module isolates the optical signal after combining, is transmitted to the corresponding ports of photoelectric conversion module.
Two groups of Bypass Control ports of master control borad are connected to combining module, and are saved by the access of combining module with adjacent transmission
The combining link of point.Illustratively, the Bypass Control port 2 of the master control borad of transmission node X is multiple by photoelectric conversion module, wavelength-division
It is connected to the combining port 1 of transmission node X+1, and is passed sequentially through the wavelength-division multiplex of transmission node X+1 with module 2, combining port 2
Module 1, photoelectric conversion module are connected to the Bypass Control port 1 of the master control borad of transmission node X+1.Wherein, the master of transmission node X
It controls and Ethernet electric signal and wavelength is carried out as λ by photoelectric conversion module between plate and the master control borad of transmission node X+10Light letter
Number mutual inversion of phases, wavelength λ0Optical signal merged by Wavelength division multiplexing module in combining link transmission, and it is multiple by wavelength-division
The optical signal after combining is isolated with module, is transmitted to the corresponding ports of photoelectric conversion module.
The present invention proposes a kind of control of system using control plane chain circuit automatic protection data surface link for above structure
Method processed, the flow chart using control plane chain circuit automatic protection data surface link as shown in Figure 4.
Step 1: controller is based on SDN basic principle and collects full mesh topology information, including transmission node, the network port, chain
The information such as road interconnection.In addition, transmission node also reports bypass ports information corresponding with the network port.
It notices the bypass ports of power board and the network port is all logically ethernet port, difference is network
On panel, bypass ports are connected on backboard bypass channel for port.Therefore according to SDN basic principle, they can be received in topology
The collection stage is reported to controller by transmission node, and difference is that transmission node wants additional report network port and bypass ports
Corresponding informance, for example, the network port 1 corresponds to bypass ports 1, the corresponding bypass ports 2 of the network port 2.
Step 2: planning of the controller according to user to business issues data forwarding stream by the control plane in combining link
List item establishes the primary path in data surface to each transmission node, for business.
That is, controller issues data forwarding flow entry by being combined chain road direction master control borad, by master control borad to corresponding friendship
It changes plate and issues control, control the primary path for establishing business transmission between the power board between adjacent transmission node.Illustratively,
Controller issues number by the master control borad of master control borad and transmission node X+1 of the control towards transmission node X in combining link
According to forwarding flow entry.The network port 2 of the power board 1 of the master control borad control transmission node X of transmission node X is used as transmission node X
Power board 1 and transmission node X+1 power board 1 communication port, and transmission node X+1 master control borad control transmission node X+
The network port 1 of 1 power board 1 establishes transmission as the corresponding communication port communicated with the power board 1 of transmission node X with this
The primary path of the power board 1 of the power board 1 and transmission node X+1 of nodes X.It is passed likewise, the master control borad of transmission node X controls
Send the network port 2 of the power board n of nodes X as the communication of the power board n of the power board n and transmission node X+1 of transmission node X
Port, and transmission node X+1 master control borad control transmission node X+1 power board n the network port 1 as with transmission node X
Power board n communication correspondence communication port, with the power board n of this power board n and transmission node X+1 that establish transmission node X
Primary path.
Step 3: controller checks each network port that primary path uses, and according to pair of the network port and bypass ports
Answer information downlink protect flow entry, using bypass channel and combining link establishment backup path, to primary path carry out by
The redundancy protecting of jump.
Primary path may include hop behavior or multi-hop behavior, and backup path is to carry out stand-by protection to hop-by-hop.Such as
In Fig. 3, it is transmitted to transmission node x+1's from the sending of the network port 2 of the power board 1 of transmission node x in primary path
1 this jump of the network port of power board 1, corresponding one jumps in backup path are as follows: from the bypass end of the power board 1 of transmission node x
Mouth 2 issues the combining port 1 for being transmitted to the combining module of transmission node x+1 by the combining port 2 of bypass channel, combining module
Using the bypass ports 1 of bypass channel, power board 1.As shown in Figure 7.
Step 4: controller is the primary path of business, backup path configuration and binds corresponding link failure detection meeting
Words, link failure detection can be based on OAM (operation and maintenance management, Operation Administration and
Maintenance) agreement monitoring mechanism.
Step 5: when fault detection conversation reports primary path failure, for the jump that link failure occurs, power board is certainly
It is dynamic according to flow entry business data flow is switched to the one of corresponding backup path and jumps onto protect.The protection cuts through journey not
Need the participation of controller.
The access signal illustrated example to break down when cutting protection is as shown in Figure 7.Assuming that from transmission node x in primary path
Power board 1 the network port 2 issue be transmitted to transmission node x+1 power board 11 this jump of the network port occur link therefore
Barrier, fault detection conversation report fault message to power board, and power board is automatically according to data forwarding flow entry and link protection stream
List item configuration, switches in following backup path corresponding one for this jump of business data flow and jumps onto: from the friendship of transmission node x
The bypass ports 2 for changing plate 1 issue the combining mould for being transmitted to transmission node x+1 by the combining port 2 of bypass channel, combining module
Block is combined port 1 using the bypass ports 1 of bypass channel, power board 1.
It is that primary path creates backup path, and power board is directed to that above controller, which protects flow entry by downlink,
Business data flow is switched to the one of corresponding backup path automatically according to flow entry and jumps onto progress by the jump that link failure occurs
Protection, implements a kind of embodiment of technology are as follows: referring in SDN OpenFlow standard flow table agreement (1.1 or more version)
Fast_failover (fast failure is cut) type group table (group table), increase for OpenFlow agreement a kind of new
Type group table, the present embodiment are referred to as user_failover (the customized failure of user is cut) type group table.With fast_
Failover type group table is similarly: fast_failover type group table and user_failover type group table are all supported to take
With multiple action buckets (action buckets), and it can determine currently select to execute that wherein which is taken action according to certain criterion
Bucket.Unlike fast_failover type group table: fast_failover type group table is mainly supported according to port failure
Situation carries out selection and executes action bucket, and user_failover type group table is extended to can be customized according to external software
Fault type carries out selection and executes action bucket.
It is the group list item of user_failover type group table as shown in table 1, its Type is the user_ extended
Failover, each action bucket include the one Watch_failure abort situation and event for specified detection.In this example
In son, the corresponding primary path of action bucket 1 (issues) from the network port 2 of the power board 1 of transmission node x, and the action correspondence of bucket 2 is spare
Path (issues) from the bypass ports 2 of the power board 1 of transmission node x.The Watch_failure content of action bucket 1 is to detect
Data surface link is normal, and when data surface link fault-free, group table selection executes action bucket 1, i.e. transmitting data flow to Out_
Port is on the network port 2 of the power board 1 of transmission node x, into primary path.The Watch_failure content of action bucket 2
To detect data surface link failure, when detecting the failure, group table selection executes action bucket 2, i.e. transmitting data flow arrives
Out_port is in the bypass ports 2 of the power board 1 of transmission node x, into backup path.
The group list item (extended mode one) of 1 user_failover type group table of table
Since the group table of Openflow is to be examined successively whether Watch_failure content meets according to action bucket sequence,
It is always preferential under above-mentioned group of table extended mode to use action bucket 1 (primary path).When primary path failure, data flow is according to group
Table is switched in action bucket 2 (backup path) by automatic, when primary path restores, according to action bucket sequential data stream again by certainly
It is dynamic to switch back on primary path.
Under certain application scenarios, more diversified demand may be proposed to the active-standby path formula of falling butt, such as:
1, it requires when primary path failure, first checks a customer parameter " automatic cut is closed ", if switch is opened,
Then data flow is switched to backup path, does not otherwise occur to cut automatically；
2, when requiring to restore after primary path failure again, data flow first waits the regular hour to switch back to primary road again
On diameter, which is known as " delay and cut the time " (Wait_to_Revert time)；
3, when requiring to restore after primary path failure again, data flow can not necessarily be switched back on primary path, and
It is to be the primary path of falling switchback or rest on according to customer parameter switch " reversibility " (Revertiveness) decision
On backup path；
4, require user that can issue instruction manually, artificially specified data flow is forced to switch on primary path, or by
Pressure switches on backup path, which is known as " being switched to active/standby path manually " (Manual Revert to
Work/Protect Path) instruction.
At this point it is possible to take another embodiment are as follows: be the user_failover of second of extended mode as shown in table 2
The group list item of type group table, Watch_failure therein are substituted by Watch_flag, i.e., no longer according to fault verification action bucket
Whether execute, but check that the corresponding flag bit Flag of action bucket, Flag are 1 and execute this action bucket, Flag is not held then for 0
Row.The Flag can be configured by external software model, and above-mentioned diversified demand can be by external software
Increase more logics to realize, the flexibility ratio of function greatly improves.
The group list item (extended mode two) of 2 user_failover type group table of table
After external software model is handled according to a variety of inputs, output setting user_failover type group table
The schematic block diagram of flag bit Flag is as shown in Figure 5: outside control software incoming event include detect data link failure with
And detect that data link is restored, the input parameter of external software model include it is automatic fall cut close, delay cut the time,
The instruction input of reversibility, outside control software includes being switched to primary path manually, being switched to backup path manually, external
Software model passes through above-mentioned input, determines output setting user_failover type group table, user_failover type
Group table includes Flag1 and Flag2.
The process flow diagram of the external software model of above-mentioned diversified demand as shown in fig. 6, wherein Flag1 set 1,
Flag2 sets 0 representative selection primary path, and Flag1 sets 0, Flag2 and sets 1 representative selection backup path.
Judge whether to be switched to backup path manually when Flag1 sets 1, Flag2 sets 0, if judging to be switched to manually spare
Path then carries out Flag1 and sets the operation that 0, Flag2 sets 1；If Flag1 sets 1, Flag2 when setting 0, judgement be not be switched to manually it is standby
With path, then detection data link whether failure；When detecting that data link breaks down, detection is automatic to fall whether to cut pass
It opens, and when detecting automatic incision pass to open, progress Flag1 sets the operation that 0, Flag2 sets 1.
It is set after 0, Flag2 sets 1 executing Flag1, judges whether to execute and be switched to primary path manually；It is fallen manually in judgement
When being switched to primary path, executes Flag1 and set the operation that 1, Flag2 sets 0, when judging without being switched to primary path manually,
Whether detection data link restores normal；When detecting that data link does not recover to normal, execute again Flag1 set 0,
Flag2 sets 1 operation, and when detecting that data link is restored to normal, detection is automatic to fall to cut whether pass opens；It is detecting
Automatically after incision pass is not switched on, Flag1 is executed again and sets the operation that 0, Flag2 sets 1, and detecting that incision pass is beaten automatically
After opening, whether detection reversibility is 1；When reversibility is not 1, Flag1 is executed again and sets the operation that 0, Flag2 sets 1, and
When detecting that reversibility is 1, detection, which is delayed, cuts whether the time is 0；Detect delay cut the time be 0 when, execute
Flag1 sets the operation that 1, Flag2 sets 0, and waits the corresponding time detecting to delay when to cut the time not be 0, and execute Flag1
Set the operation that 1, Flag2 sets 0.
In traditional SDN, controller issues data forwarding flow entry to the master control borad of transmission node, master control by control plane
Plate is configured in power board, controls data transmission behavior of the power board on data surface, for example specify the list of some business
It slips a line are as follows: the business data flow is issued from the network port 2 of the power board 1 of transmission node x, is transmitted to the friendship of transmission node x+1
Change the network port 1 of plate 1；When specifying multiple hop behaviors of the business to form multi-hop behavior, that is, the business is specified in SDN
In a transmitting path (path).
In the present invention, while controller is that sending down service data forwarding flow entry establishes transmitting path, also issue corresponding
Link protection flow entry, backup path is created in former control plane link circuit resource (now be combining link), utilizes control plane chain
Road resource provides the redundancy protecting to primary path in data surface link.
Although the present invention is described in detail referring to the foregoing embodiments, those skilled in the art should manage
Solution: it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (16)
1. a kind of method using control plane chain circuit automatic protection data surface link, which is characterized in that the described method includes:
Full mesh topology information is collected by controller；
The primary path that operation exchange between transmission node is established in data surface link establishes business friendship between transmission node
The backup path changed；
The backup path and control plane link are combined, building combining link；
Detect the link failure situation of the primary path and backup path；
Carry out primary path and backup path automatically according to link failure situation cuts movement.
2. the method according to claim 1 using control plane chain circuit automatic protection data surface link, which is characterized in that institute
Stating full mesh topology information includes transmission node information, network port information and link interconnection information.
3. the method according to claim 2 using control plane chain circuit automatic protection data surface link, which is characterized in that institute
Stating transmission node information includes bypass ports information corresponding with the network port.
4. the method according to any one of claims 1 to 3 using control plane chain circuit automatic protection data surface link,
Be characterized in that, the controller by control plane issue data forwarding flow entry establish to each transmission node it is described primary
Path, the controller downlink protection flow entry establish the backup path.
5. the method according to claim 4 using control plane chain circuit automatic protection data surface link, which is characterized in that root
The chain is issued according to the network port corresponding informance of the primary path and the bypass ports corresponding informance of the backup path
Protect flow entry in road.
6. the method according to claim 1 using control plane chain circuit automatic protection data surface link, which is characterized in that institute
It states and carries out hop behavior or multi-hop behavior on primary path, the backup path carries out the redundancy protecting of hop-by-hop to primary path.
7. the method according to claim 1 using control plane chain circuit automatic protection data surface link, which is characterized in that institute
It states backup path and control plane link and combining link is established by wavelength-division multiplex technique.
8. the method according to claim 1 using control plane chain circuit automatic protection data surface link, which is characterized in that institute
It states controller to be the primary path and backup path cooperation and bind corresponding link failure detection session, passes through chain
Road fault detection conversation detects link failure situation.
9. the method according to claim 8 using control plane chain circuit automatic protection data surface link, which is characterized in that institute
When stating fault detection conversation report primary path failure, for the jump that link failure occurs, power board is automatically according to flow entry
It business data flow is switched to the one of corresponding backup path jumps onto and protect.
10. a kind of system using control plane chain circuit automatic protection data surface link, which is characterized in that including being connected to adjacent biography
Send the data surface link between the power board of node, the primary path as operation exchange between transmission node；
And the bypass channel in the transmission node and combining module are set, the power board is connected by the bypass channel
It is connected to the combining module, connection combining link, passes through the bypass between the combining module of the adjacent transmission node
The backup path of channel and the combining link as operation exchange between the transmission node；
Master control borad in the transmission node is connected with combining module, is closed backup path and control plane link by combining module
Road is connected to combining link.
11. the system according to claim 10 using control plane chain circuit automatic protection data surface link, which is characterized in that
The power board includes the network port and bypass ports, is connected between the power board of two adjacent groups transmission node by the network port
Data surface link, power board connect bypass channel by bypass ports, and the bypass channel is connected to combining module.
12. the system according to claim 11 using control plane chain circuit automatic protection data surface link, which is characterized in that
The power board includes the network port of at least two groups, and the exchange of business datum is carried out by the network port.
13. the system according to claim 12 using control plane chain circuit automatic protection data surface link, which is characterized in that
The power board includes the bypass ports of at least two groups, and the bypass ports and the network port correspond.
14. the system according to claim 11 using control plane chain circuit automatic protection data surface link, which is characterized in that
The network port and bypass ports are all made of ethernet port.
15. being using control plane chain circuit automatic protection data surface link described in 0~14 any one according to claim 1
System, which is characterized in that the combining module includes photoelectric conversion module, Wavelength division multiplexing module and combining port, the photoelectricity
Conversion module is connect with Wavelength division multiplexing module, Wavelength division multiplexing module connection combining port, the combining mould of two adjacent groups transmission node
Block passes through combining port connection combining link；
Photoelectric conversion module has two-way function, for carrying out the optical signal route of specific wavelength and mutually turning for Electrical signal lines
It changes；
The Wavelength division multiplexing module has two-way function, carries out mutually converting for a plurality of optical link and optical link.
16. being using control plane chain circuit automatic protection data surface link described in 0~14 any one according to claim 1
System, which is characterized in that the bypass channel is arranged on backboard.
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| CN110113258B (en) | 2024-03-26 |
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