CN108880766A - Signaling configuration method and device - Google Patents
Signaling configuration method and device Download PDFInfo
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- CN108880766A CN108880766A CN201710326426.XA CN201710326426A CN108880766A CN 108880766 A CN108880766 A CN 108880766A CN 201710326426 A CN201710326426 A CN 201710326426A CN 108880766 A CN108880766 A CN 108880766A
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- lsp
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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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
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0806—Configuration setting for initial configuration or provisioning, e.g. plug-and-play
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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
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- Computer Networks & Wireless Communication (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention provides a kind of signaling configuration method and devices, through the invention, receive controller and pass through the first configuration information that first path computing element communication protocol pcep is sent；It is that primary label-switched path lsp configures two-way signaling according to the first configuration information.Therefore, can solve controller in the related technology, how triggering terminal equipment is lsp the problem of establishing two-way signaling, is achieved the effect that through controller to the two-way signaling of terminal equipment configuration.
Description
Technical field
The present invention relates to the communications fields, in particular to a kind of signaling configuration method and device.
Background technique
Traditional computer communication network router, interchanger etc. are needed through network management manual configuration and management.With
The development of communication network technique, software defined network (Software Defined Network, referred to as SDN) are increasingly becoming and work as
The emphasis of preceding network is separated by control plane and forwarding surface, so that control plane realizes programmable, passes through SDN controller at present
Controlling legacy network devices becomes a kind of trend.
Equipment carries out two-way converting detection (Bidirectional Forwarding Detection, letter to tunnel at present
Referred to as BFD) detection when, in order to enable BFD detection send and receive packets path it is consistent, need to configure two-way signaling.SDN technology occur with
Before, it would be desirable to after device flag switching path (Label Switching Path, referred to as lsp) issues successfully, individually
Configure two-way signaling.But with the development of SDN technology, control plane and forwarding surface separation, controller is needed to issue to trigger lsp
With the configuration of two-way signaling.So operator needs a kind of method that can touch in equipment when controller issues tunnel configuration
The configuration for sending out signaling two-way, so that equipment carries out effective BFD detection to tunnel.At this stage, controller passes through netconf
Channel issues tunnel configuration, and passage path computing element communication protocol pcep agreement issues lsp information.But at this stage also not
It can be that lsp establishes two-way signaling by controller triggering terminal equipment.
Therefore, in the related technology to controller how triggering terminal equipment be lsp establish two-way signaling not yet introduce.
Summary of the invention
The embodiment of the invention provides a kind of signaling configuration method and device, at least to solve in the related technology, controller is such as
What triggering terminal equipment is the problem of lsp establishes two-way signaling.
According to one embodiment of present invention, a kind of signaling configuration method is provided, including：It receives controller and passes through first
The first configuration information that path computation element communication protocol pcep is sent；It is main tag changeable path according to first configuration information
Diameter lsp configures two-way signaling.
Optionally, the first predetermined bit is added in the presumptive area of the initialization initiate information of the first pcep
Position, wherein first predetermined bit position is for identifying first configuration information.
It optionally, is that the two-way signaling of the main lsp configuration includes according to first configuration information：Match according to described first
Confidence breath is that the main lsp configures two-way signaling, and creates the first reversed lsp for the main lsp, wherein described first is reversed
Lsp is identical as the path of the main lsp, contrary.
It optionally, is being after the main lsp configures two-way signaling according to first configuration information, the method is also wrapped
It includes：It receives the controller and passes through the second configuration information that the 2nd pcep is sent；It is that standby lsp matches according to second configuration information
Set two-way signaling.
Optionally, it is added with the second predetermined bit position in the presumptive area of the update update information of the 2nd pcep,
Wherein, second predetermined bit position is for identifying second configuration information.
It optionally, is that the two-way signaling of the standby lsp configuration includes according to second configuration information：Match according to described second
Confidence breath is that the standby lsp configures two-way signaling, and creates the second reversed lsp for the standby lsp, wherein described second is reversed
Lsp is identical as the standby path of lsp, contrary.
Optionally, at least one following information is also carried in the 2nd pcep：It is the standby lsp configuration for protecting
Two-way signaling protection information, wherein the protection information, for detecting that current lsp is switched to institute from the main lsp
In the case where stating standby lsp, the reversed lsp for triggering current lsp is switched to the described second reversed lsp from the described first reversed lsp.
According to another embodiment of the invention, a kind of signaling configuration method is provided, including：It is calculated by first path
Element communication agreement pcep sends the first configuration information to terminal, wherein first configuration information is for triggering the terminal
Two-way signaling is configured for primary label-switched path lsp.
Optionally, before sending first configuration information to the terminal by the first pcep, the method
Further include：It is added with the first predetermined bit position in the presumptive area of the initialization initiate information of the first pcep,
In, first predetermined bit position is for identifying first configuration information.
Optionally, first configuration information, being also used to trigger the terminal is that the main lsp creates the first reversed lsp,
Wherein, the described first reversed lsp is identical as the path of the main lsp, contrary.
Optionally, after sending first configuration information to the terminal by the first pcep, the method
Further include：Second configuration information is sent to the terminal by the 2nd pcep, wherein second configuration information is for touching
Sending out terminal described is that standby lsp configures two-way signaling.
Optionally, before sending second configuration information to the terminal by the 2nd pcep, the method
Further include：The second predetermined bit position is added in the presumptive area of the update update information of the 2nd pcep, wherein institute
The second predetermined bit position is stated for identifying second configuration information.
Optionally, second configuration information, being also used to trigger the terminal is that the standby lsp creates the second reversed lsp,
Wherein, the described second reversed lsp is identical as the standby path of lsp, contrary.
Optionally, at least one following information is also carried in the 2nd pcep：It is the standby lsp configuration for protecting
Two-way signaling protection information, wherein the protection information, for detecting that current lsp is switched to institute from the main lsp
In the case where stating standby lsp, the reversed lsp for triggering the current lsp of the terminal is switched to described second instead from the described first reversed lsp
To lsp.
According to still another embodiment of the invention, a kind of signal deployment device is provided, including：Receiving module, for connecing
Admission controller passes through the first configuration information that first path computing element communication protocol pcep is sent；Configuration module is used for basis
First configuration information is that primary label-switched path lsp configures two-way signaling.
Optionally, the receiving module is also used to be that the main lsp configures two-way letter according to first configuration information
After order, receives the controller and pass through the second configuration information that the 2nd pcep is sent；And according to second configuration information
Two-way signaling is configured for standby lsp.
According to still another embodiment of the invention, a kind of signal deployment device is provided, including：Sending module, for leading to
It crosses first path computing element communication protocol pcep and sends the first configuration information to terminal, wherein first configuration information is used
It is that primary label-switched path lsp configures two-way signaling in triggering the terminal.
Optionally, the sending module is also used to matching by the first pcep to terminal transmission described first
After confidence breath, second configuration information is sent to the terminal by the 2nd pcep, wherein second configuration information is used
It is that standby lsp configures two-way signaling in triggering the terminal.
According to still another embodiment of the invention, a kind of storage medium is additionally provided.The storage medium is set as storage and uses
In the program code for executing following steps：It receives controller and passes through first path computing element communication protocol pcep is sent first
Configuration information；It is that primary label-switched path lsp configures two-way signaling according to first configuration information.
Optionally, storage medium is also configured to store the program code for executing following steps：First pcep's
It initializes and is added with the first predetermined bit position in the presumptive area of initiate information, wherein use first predetermined bit position
In mark first configuration information.
Optionally, storage medium is also configured to store the program code for executing following steps：Match according to described first
Confidence breath is that the two-way signaling of the main lsp configuration includes：It is that the main lsp configures two-way letter according to first configuration information
It enables, and creates the first reversed lsp for the main lsp, wherein the first reversed lsp is identical as the path of the main lsp, side
To opposite.
Optionally, storage medium is also configured to store the program code for executing following steps：According to described first
After configuration information configures two-way signaling for the main lsp, the method also includes：It receives the controller and passes through the 2nd pcep
The second configuration information sent；It is that standby lsp configures two-way signaling according to second configuration information.
Optionally, storage medium is also configured to store the program code for executing following steps：2nd pcep's
It updates and is added with the second predetermined bit position in the presumptive area of update information, wherein second predetermined bit position is for marking
Know second configuration information.
Optionally, storage medium is also configured to store the program code for executing following steps：Match according to described second
Confidence breath is that the two-way signaling of the standby lsp configuration includes：It is that the standby lsp configures two-way letter according to second configuration information
It enables, and creates the second reversed lsp for the standby lsp, wherein the second reversed lsp is identical as the standby path of lsp, side
To opposite.
Optionally, storage medium is also configured to store the program code for executing following steps：In 2nd pcep
Also carry at least one following information：For protecting the protection information of the two-way signaling for the standby lsp configuration, wherein institute
Protection information is stated, for triggering current lsp in the case where detecting that current lsp is switched to the standby lsp from the main lsp
Reversed lsp be switched to the described second reversed lsp from the described first reversed lsp.
According to still another embodiment of the invention, a kind of storage medium is additionally provided.The storage medium is set as storage and uses
In the program code for executing following steps：First, which is sent, to terminal by first path computing element communication protocol pcep matches confidence
Breath, wherein first configuration information is that primary label-switched path lsp configures two-way signaling for triggering the terminal.
Optionally, storage medium is also configured to store the program code for executing following steps：Passing through described first
Before pcep sends first configuration information to the terminal, the method also includes：In the initialization of the first pcep
The first predetermined bit position is added in the presumptive area of initiate information, wherein first predetermined bit position is for identifying
First configuration information.
Optionally, storage medium is also configured to store the program code for executing following steps：Described first matches confidence
Breath, being also used to trigger the terminal is that the main lsp creates the first reversed lsp, wherein the first reversed lsp and the master
The path of lsp is identical, contrary.
Optionally, storage medium is also configured to store the program code for executing following steps：Passing through described first
After pcep sends first configuration information to the terminal, the method also includes：By the 2nd pcep to the terminal
Send second configuration information, wherein second configuration information is that standby lsp configures two-way letter for triggering the terminal
It enables.
Optionally, storage medium is also configured to store the program code for executing following steps：Passing through described second
Before pcep sends second configuration information to the terminal, the method also includes：In the update of the 2nd pcep
The second predetermined bit position is added in the presumptive area of update information, wherein second predetermined bit position is for identifying institute
State the second configuration information.
Optionally, storage medium is also configured to store the program code for executing following steps：Described second matches confidence
Breath, being also used to trigger the terminal is the second reversed lsp of the standby lsp creation, wherein the second reversed lsp with it is described standby
The path of lsp is identical, contrary.
Optionally, storage medium is also configured to store the program code for executing following steps：In 2nd pcep
Also carry at least one following information：For protecting the protection information of the two-way signaling for the standby lsp configuration, wherein institute
Protection information is stated, for triggering the terminal in the case where detecting that current lsp is switched to the standby lsp from the main lsp
The reversed lsp of current lsp is switched to the described second reversed lsp from the described first reversed lsp.
Through the invention, controller is received by the first of first path computing element communication protocol pcep transmission with confidence
Breath；It is that primary label-switched path lsp configures two-way signaling according to the first configuration information.Since controller is used for by pcep transmission
Triggering terminal is that lsp configures the configuration information of two-way signaling, and terminal is allowed according to the configuration information to be label switched path
Lsp configures two-way signaling, therefore, can solve controller in the related technology how triggering terminal equipment is lsp and establish two-way letter
The problem of enabling achievees the effect that through controller to the two-way signaling of terminal equipment configuration.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is a kind of hardware block diagram of the mobile terminal of signaling configuration method of the embodiment of the present invention；
Fig. 2 is the flow chart one of signaling configuration method according to an embodiment of the present invention；
Fig. 3 is LSP Format Object schematic diagram according to an embodiment of the present invention；
Fig. 4 is LSPA Format Object schematic diagram according to an embodiment of the present invention；
Fig. 5 is the flowchart 2 of signaling configuration method according to an embodiment of the present invention；
Fig. 6 is operator's single domain network networking diagram according to an embodiment of the present invention；
Fig. 7 is that lsp according to an embodiment of the present invention actively issues flow chart；
Fig. 8 is pcep session establishment process according to an embodiment of the present invention；
Fig. 9 is the cross-domain network organizing figure of operator according to an embodiment of the present invention；
Figure 10 is that lsp according to an embodiment of the present invention passively issues flow chart；
Figure 11 is the structural block diagram one of signal deployment device according to an embodiment of the present invention；
Figure 12 is the structural block diagram two of signal deployment device according to an embodiment of the present invention.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.
Embodiment 1
Embodiment of the method provided by the embodiment of the present application 1 can be in mobile terminal, terminal or similar fortune
It calculates and is executed in device.For running on mobile terminals, Fig. 1 is a kind of movement of signaling configuration method of the embodiment of the present invention
The hardware block diagram of terminal.As shown in Figure 1, mobile terminal 10 may include one or more (only showing one in figure) processing
Device 102 (processing unit that processor 102 can include but is not limited to Micro-processor MCV or programmable logic device FPGA etc.),
Memory 104 for storing data and the transmitting device 106 for communication function.Those of ordinary skill in the art can be with
Understand, structure shown in FIG. 1 is only to illustrate, and does not cause to limit to the structure of above-mentioned electronic device.For example, mobile terminal 10
It may also include than shown in Fig. 1 more perhaps less component or with the configuration different from shown in Fig. 1.
Memory 104 can be used for storing the software program and module of application software, such as the signaling in the embodiment of the present invention
Corresponding program instruction/the module of method, the software program and module that processor 102 is stored in memory 104 by operation,
Thereby executing various function application and data processing, that is, realize above-mentioned method.Memory 104 may include high speed random storage
Device may also include nonvolatile memory, such as one or more magnetic storage device, flash memory or other are non-volatile solid
State memory.In some instances, memory 104 can further comprise the memory remotely located relative to processor 102, this
A little remote memories can pass through network connection to mobile terminal 10.The example of above-mentioned network includes but is not limited to internet, enterprise
Industry intranet, local area network, mobile radio communication and combinations thereof.
Transmitting device 106 is used to that data to be received or sent via a network.Above-mentioned network specific example may include
The wireless network that the communication providers of mobile terminal 10 provide.In an example, transmitting device 106 includes a Network adaptation
Device (Network Interface Controller, NIC), can be connected by base station with other network equipments so as to it is mutual
Networking is communicated.In an example, transmitting device 106 can be radio frequency (Radio Frequency, RF) module, use
In wirelessly being communicated with internet.
A kind of signaling configuration method one for running on above-mentioned mobile terminal is provided in the present embodiment, and Fig. 2 is according to this
The flow chart one of the signaling configuration method of inventive embodiments, as shown in Fig. 2, the process includes the following steps：
Step S202 receives controller by the first of first path computing element communication protocol pcep transmission with confidence
Breath；
Step S204 is that primary label-switched path lsp configures two-way signaling according to the first configuration information.
It through the above steps, is that lsp configures matching for two-way signaling since controller is sent by pcep for triggering terminal
Confidence breath, therefore allowing terminal to configure two-way signaling according to the configuration information for lsp can solve and control in the related technology
How triggering terminal equipment is the problem of lsp establishes two-way signaling to device processed, reaches two-way to terminal equipment configuration by controller
The effect of signaling.
Optionally, it is added with the first predetermined bit position in the presumptive area of the initialization initiate information of the first pcep,
Wherein, the first predetermined bit position is for identifying the first configuration information.
It optionally, is that the two-way signaling of the main lsp configuration includes according to first configuration information：Match according to described first
Confidence breath is that the main lsp configures two-way signaling, and creates the first reversed lsp for the main lsp, wherein described first is reversed
Lsp is identical as the path of the main lsp, contrary.
For example, following key message can be carried in the initiate message that controller is handed down to terminal device to trigger
Terminal device creates the two-way signaling of shielded main lsp：
1, the region Flag of LSP object defines a B bit in initiate message, indicates that controller requires terminal
Whether what equipment was established is two-way lsp.No matter active and standby lsp, when being handed down to terminal, require to carry this marker, such as Fig. 3 institute
Show, Fig. 3 is LSP Format Object schematic diagram according to an embodiment of the present invention.
2, it is carried in PROTECTION-ATTRIBUTE TLV in LSPA object in initiate message, needs to fill out P ratio
Two fields in special position and LSP Flags, as shown in figure 4, Fig. 4 is LSPA Format Object schematic diagram according to an embodiment of the present invention.
Wherein, if it is main path, P bit fills out 0, and if it is standby path, P bit fills out 1.LSP Flags fills out 0x08 (1+
1Unidirectional Protection)。
It optionally, is being after main lsp configures two-way signaling according to the first configuration information, method further includes：Receive control
Device passes through the second configuration information that the 2nd pcep is sent；It is that standby lsp configures two-way signaling according to the second configuration information.
Optionally, the second predetermined bit position is added in the presumptive area of the update update information of the 2nd pcep, wherein
Second predetermined bit position is for identifying the second configuration information.
For example, following key message can be carried in the update information that controller is handed down to terminal device to trigger end
End equipment creates the two-way signaling of shielded standby lsp：
1, the region Flag of LSP object defines a B bit in update information, indicates that controller requires terminal to set
Whether standby foundation is two-way lsp.No matter active and standby lsp, when being handed down to terminal, require to carry this marker, such as Fig. 3 institute
Show.
2, it is carried in PROTECTION-ATTRIBUTE TLV in LSPA object in update information, needs to fill out P bit
Position and two fields of LSP Flags, as shown in Figure 4.Wherein, if it is main path, P bit fills out 0, if it is standby path, P ratio
Special position fills out 1.LSP Flags fills out 0x08 (1+1Unidirectional Protection).
It optionally, is that the two-way signaling of the standby lsp configuration includes according to second configuration information：Match according to described second
Confidence breath is that the standby lsp configures two-way signaling, and creates the second reversed lsp for the standby lsp, wherein described second is reversed
Lsp is identical as the standby path of lsp, contrary.
Optionally, at least one following information is also carried in the 2nd pcep：It is the standby lsp configuration for protecting
Two-way signaling protection information, wherein the protection information, for detecting that current lsp is switched to institute from the main lsp
In the case where stating standby lsp, the reversed lsp for triggering current lsp is switched to the described second reversed lsp from the described first reversed lsp.
For example, in the main path lsp, tail node automatically creates reversed incoming tunnel, path when configuration signal is two-way
Consistent with main lsp, direction is different from main lsp；Meanwhile when flow passes through, if flow is switched to standby lsp from main lsp, instead
The reverse tunnel of standby lsp can be switched to from main lsp reverse tunnel automatically to tunnel.That is, above-mentioned protection information is for supporting lsp
When the refluence of routing head node is switched to over run tunnel (standby lsp), tail node, which also starts, is switched to over run tunnel (for the reversed of lsp
Tunnel) on.
A kind of signaling configuration method for running on above-mentioned mobile terminal is additionally provided in the present embodiment, and Fig. 5 is according to this
The flowchart 2 of the signaling configuration method of inventive embodiments, as shown in figure 5, the process includes the following steps：
Step S502 sends the first configuration information to terminal by first path computing element communication protocol pcep, wherein
First configuration information is that primary label-switched path lsp configures two-way signaling for triggering terminal.
Optionally, before sending the first configuration information to terminal by the first pcep, method further includes：In the first pcep
Initialization initiate information presumptive area in be added with the first predetermined bit position, wherein the first predetermined bit position is used for
Identify the first configuration information.
Optionally, first configuration information, being also used to trigger the terminal is that the main lsp creates the first reversed lsp,
Wherein, the described first reversed lsp is identical as the path of the main lsp, contrary.
Optionally, after sending the first configuration information to terminal by the first pcep, method further includes：Pass through second
Pcep sends the second configuration information to terminal, wherein the second configuration information is that standby lsp configures two-way signaling for triggering terminal.
Optionally, before sending the second configuration information to terminal by the 2nd pcep, method further includes：In the 2nd pcep
Update update information presumptive area in be added with the second predetermined bit position, wherein the second predetermined bit position is for identifying
Second configuration information.
Optionally, second configuration information, being also used to trigger the terminal is that the standby lsp creates the second reversed lsp,
Wherein, the described second reversed lsp is identical as the standby path of lsp, contrary.
Optionally, at least one following information is also carried in the 2nd pcep：It is the standby lsp configuration for protecting
Two-way signaling protection information, wherein the protection information, for detecting that current lsp is switched to institute from the main lsp
In the case where stating standby lsp, the reversed lsp for triggering the current lsp of the terminal is switched to described second instead from the described first reversed lsp
To lsp.
It is issued while it should be noted that controller can issue lsp information by pcep agreement in above-described embodiment
Two-way signaling information.It can be applied to data network communications and SDN technical field.
For example, carrying out issuing for lsp information by pcep agreement, i.e., by pcep agreement at present in SDN controller
Initiate message and update message in add association object and protect-tlv and realize active and standby lsp function.
When in order to realize that controller issues lsp information by pcep agreement, two-way signaling information can be issued simultaneously, pcep can be assisted
View is extended, and passes through purpose of the controller to the two-way signaling of device configuration to realize.That is, by being carried out to existing pcep agreement
Extension when realization issues lsp information to equipment by controller, while triggering the foundation of two-way signaling, and solution must not pass through control
The problem of device triggering two-way signaling of equipment processed is established.
It should be noted that the control provided by the invention for issuing two-way active/standby tunnel (being equivalent to lsp) based on SDN controller
Device system processed includes：
Topology Management module runs BGP-LS Routing Protocol by SDN controller and forwarding device, collects from forwarding device
Topology information manages the topology information in the domain SDN, provides and calculates road foundation；
Path calculation module, according to SDN controller topology information and certain constraint condition (such as bandwidth, path constraint
Deng) calculate business beginning and end optimal forward-path；
Tunnel module, management tunnel and lsp information issue tunnel to equipment by configuration distributing module according to business demand
Information and lsp information；
Configuration distributing module includes mainly the channel netconf and pcep protocol channel, according to business demand and path computing
The routing information that module calculates issues tunnel configuration by the channel netconf first, is then issued by pcep protocol channel
Lsp information.
The method that two-way active/standby tunnel based on SDN controller of the invention is realized includes the following steps：
The first step：The configurations for completing network mainly include planning to each network equipment and each interface of equipment
And IP address has been configured, correct line between each equipment, in each domain, IGP routing is got through.
Second step：SDN controller collects the topology information in institute's management domain by BGP-LS.
Third step：It is carried when topology information and service creation that the path calculation module of controller is collected according to controller
Calculation road constraint information (such as bandwidth, time delay, node includes or node excludes etc.), calculate optimal path.
4th step：The calculated optimal path information of tunnel module management PCE module, is handed down to by the channel netconf
Then lsp information is handed down to equipment by pcep protocol channel by equipment, while carrying in pcep agreement and establishing two-way signaling
Configuration information.
Fig. 6 is operator's single domain network networking diagram according to an embodiment of the present invention, as shown in fig. 6, using SDN controller pipe
Manage whole network, that is, dispose the seamless MPLS network of single domain using SDN controller, realize collecting topology, path computing, BGP/
PCEP configuration distributing, get through access device in domain to convergence device flow, and can be realized in domain activestandby tunnel protection and
The function of two-way signaling.
It mainly include being planned simultaneously to each network equipment and each interface of equipment firstly, completing the configurations of network
IP address is configured, correct line between each equipment, IGP routing is got through in domain, and specific flow chart is as shown in fig. 7, Fig. 7 is root
Flow chart is actively issued according to the lsp of the embodiment of the present invention.
Step 1：Start controller and equipment, then controller issues bgp to equipment by the channel netconf and pcep matches
Confidence breath, establishes the bgp connection and pcep session of controller and equipment.Last controller by with the forwarding device that manages below
Between enable BGP-LS agreement, collect institute's management domain in topology information.
Step 2：Before service creation, need to request tunnel module creation domain inner tunnel, at this time tunnel module request PCE module
Calculation road is carried out, optimal path end to end is calculated in domain.The optimal path that tunnel module is calculated according to PCE carries out tunnel in domain
Issuing for road configuration and issuing for LSP information.Tunnel configuration is issued by the channel netconf, after issuing successfully, using extension
Pcep agreement issues active and standby lsp information.
Step 3：Before issuing lsp information by pcep agreement, it is necessary first to which all devices establish pcep in controller and domain
Session.Pcep conversation establishing process is as shown in Figure 8.Then it is carried out by initiate message in pcep agreement and update message
Active and standby lsp is issued.Due to needing to realize two-way signaling on active and standby lsp, according to summary of the invention using the pcep agreement after extension.
Association object is carried i.e. in initiate message and protect-tlv issues main lsp, while extending association
Object and protect-tlv to carry two-way signaling information in message, and after being issued to equipment, equipment can parse the message simultaneously
Main lsp is created, while configuring two-way signaling.After equipment creates main lsp success, report message is returned to controller, controller is received
After the report message returned to equipment, tunnel module is notified, then tunnel module calls update message to issue standby lsp,
Association object and protect-tlv are equally carried in update message, at the same extend association object and
Protect-tlv to carry two-way signaling information in message, and after being issued to equipment, equipment can parse the message and create standby
Lsp, while configuring two-way signaling.
Step 4：Tunnel module issues carry the active and standby lsp information of two-way signaling to equipment success after, then business module
Creation business, domain internal channel are got through.
Fig. 9 is the cross-domain network organizing figure of operator according to an embodiment of the present invention, as shown in figure 9, using SDN controller pipe
Whole network is managed, i.e., disposes cross-domain seamless MPLS network using SDN hierarchical controller, is i.e. three D controllers of a H controller are real
Existing collecting topology, path computing, BGP/PCEP configuration distributing get through access ring Acc-PE1 equipment to core ring N-PE3 equipment
Flow, and can be realized the function of each domain activestandby tunnel protection and two-way signaling.
It mainly include being planned simultaneously to each network equipment and each interface of equipment firstly, completing the configurations of network
IP address is configured, correct line between each equipment, in each domain, IGP routing is got through, and specific flow chart is as shown in Figure 7.
Step 1：Start the D controller and equipment of H controller and each domain, then each domain controller is logical by netconf
Road issues bgp and pcep configuration information to equipment, establishes the bgp connection and pcep session of each domain controller and equipment.Finally
Each domain controller collects the topology letter in institute's management domain by enabling BGP-LS agreement between the forwarding device that manages below
Breath, the D controller in last each domain will be collected into topology information is reported to H controller.
Step 2：Business is created by H controller, before service creation, needs to request the tunnel module of each domain controller to create
Domain inner tunnel is built, tunnel module request PCE module carries out calculation road at this time, calculates in domain optimal path end to end.Tunnel mould
The optimal path that root tuber is calculated according to PCE carries out issuing for domain inner tunnel configuration and issuing for LSP information.Tunnel configuration passes through
The channel netconf issues, and after issuing successfully, issues active and standby lsp information using the pcep agreement of extension.
Step 3：Before issuing lsp information by pcep agreement, it is necessary first to which all devices establish pcep in controller and domain
Session.Pcep conversation establishing process is as shown in Figure 8.Then it is carried out by initiate message in pcep agreement and update message
Active and standby lsp is issued.Due to needing to realize two-way signaling on active and standby lsp, according to summary of the invention using the pcep agreement after extension.
Association object is carried i.e. in initiate message and protect-tlv issues main lsp, while extending association
Object and protect-tlv to carry two-way signaling information in message, and after being issued to equipment, equipment can parse the message simultaneously
Main lsp is created, while configuring two-way signaling.After equipment creates main lsp success, report message is returned to controller, controller is received
After the report message returned to equipment, tunnel module is notified, then tunnel module calls update message to issue standby lsp,
Association object and protect-tlv are equally carried in update message, at the same extend association object and
Protect-tlv to carry two-way signaling information in message, and after being issued to equipment, equipment can parse the message and create standby
Lsp, while configuring two-way signaling.
Step 4：Tunnel module issues carry the active and standby lsp information of two-way signaling to equipment success after, then business module
Creation business, cross-domain channel are got through.
As shown in figure 9, disposing cross-domain seamless MPLS network, i.e. three D controls of a H controller using SDN hierarchical controller
Device processed realizes collecting topology, and path computing, BGP/PCEP configuration distributing get through access ring Acc-PE1 equipment to core ring N-PE3
The flow of equipment, and can be realized the function of each domain activestandby tunnel protection and two-way signaling.
It mainly include being planned simultaneously to each network equipment and each interface of equipment firstly, completing the configurations of network
Configuring IP address, correct line between each equipment, in each domain, IGP routing is got through, and specific flow chart is as shown in Figure 10,
Figure 10 is that lsp according to an embodiment of the present invention passively issues flow chart.
Step 1：Start the D controller and equipment of H controller and each domain, then each domain controller is logical by netconf
Road issues bgp and pcep configuration information to equipment, establishes the bgp connection and pcep session of each domain controller and equipment.Finally
Each domain controller collects the topology letter in institute's management domain by enabling BGP-LS agreement between the forwarding device that manages below
Breath, the D controller in last each domain will be collected into topology information is reported to H controller.
Step 2：After controller and the success of the pcep session establishment of equipment, device request controller creates active/standby tunnel, first
First, equipment sends request message to controller by the channel pcep, after controller receives the request message of equipment transmission,
It parses the message and notifies the main lsp of tunnel module creation, call PCE module to carry out path computing after tunnel module is notified,
The optimal path between node is calculated, good optimal path is then offered into tunnel module, then tunnel module calls pcep mould
The reply message of block carries out issuing for main lsp.Association object and protect-tlv are carried in reply message, simultaneously
Extension association object and protect-tlv to carry two-way signaling information, after being issued to equipment, equipment in message
It can parse the message and create main lsp, while configuring two-way signaling.After equipment creates main lsp success, equipment is then to control
Device sends request message, after controller receives the request message that equipment is returned, notifies tunnel module, then tunnel module
PCE module carries out standby path computing, and calculates optimal path, then offers tunnel module, finally, tunnel module calls pcep association
The reply message of view issues standby lsp to equipment, equally to carry association object and protect- in reply message
Tlv, while extending association object and protect-tlv to carry two-way signaling information in message, it is issued to equipment
Afterwards, equipment can parse the message and create standby lsp, while configure two-way signaling.
Step 3：Tunnel module issues carry the active and standby lsp information of two-way signaling to equipment success after, then business module
Creation business, cross-domain channel are got through.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation
The method of example can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but it is very much
In the case of the former be more preferably embodiment.Based on this understanding, technical solution of the present invention is substantially in other words to existing
The part that technology contributes can be embodied in the form of software products, which is stored in a storage
In medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be mobile phone, calculate
Machine, server or network equipment etc.) execute method described in each embodiment of the present invention.
Embodiment 2
A kind of signal deployment device is additionally provided in the present embodiment, and the device is real for realizing above-described embodiment and preferably
Mode is applied, the descriptions that have already been made will not be repeated.As used below, the soft of predetermined function may be implemented in term " module "
The combination of part and/or hardware.Although device described in following embodiment is preferably realized with software, hardware, or
The realization of the combination of software and hardware is also that may and be contemplated.
Figure 11 is the structural block diagram one of signal deployment device according to an embodiment of the present invention, as shown in figure 11, the device packet
It includes：
Receiving module 112, pass through first path computing element communication protocol pcep transmission for receiving controller first
Configuration information；
Configuration module 114 is connected to above-mentioned receiving module 112, for being main tag changeable path according to the first configuration information
Diameter lsp configures two-way signaling.
Optionally, receiving module 112 are also used to be after main lsp configures two-way signaling, to connect according to the first configuration information
Admission controller passes through the second configuration information that the 2nd pcep is sent；And two-way letter is configured for standby lsp according to the second configuration information
It enables.
Figure 12 is the structural block diagram two of signal deployment device according to an embodiment of the present invention, as shown in figure 12, the device packet
It includes：
Sending module 122 matches confidence for sending first to terminal by first path computing element communication protocol pcep
Breath, wherein the first configuration information is that primary label-switched path lsp configures two-way signaling for triggering terminal.
Optionally, sending module 122 are also used to after sending the first configuration information to terminal by the first pcep, are led to
It crosses the 2nd pcep and sends the second configuration information to terminal, wherein the second configuration information is that standby lsp configuration is two-way for triggering terminal
Signaling.
It should be noted that above-mentioned modules can be realized by software or hardware, for the latter, Ke Yitong
Following manner realization is crossed, but not limited to this：Above-mentioned module is respectively positioned in same processor；Alternatively, above-mentioned modules are with any
Combined form is located in different processors.
Embodiment 3
The embodiments of the present invention also provide a kind of storage mediums.Optionally, in the present embodiment, above-mentioned storage medium can
To be arranged to store the program code for executing following steps：
S1 receives controller and passes through the first configuration information that first path computing element communication protocol pcep is sent；
S2 is that primary label-switched path lsp configures two-way signaling according to the first configuration information.
Optionally, storage medium is also configured to store the program code for executing following steps：
The first predetermined bit position is added in the presumptive area of the initialization initiate information of S1, the first pcep, wherein
First predetermined bit position is for identifying the first configuration information.
Optionally, storage medium is also configured to store the program code for executing following steps：
S1 is that the two-way signaling of the main lsp configuration includes according to first configuration information：Match confidence according to described first
Breath is that the main lsp configures two-way signaling, and creates the first reversed lsp for the main lsp, wherein the first reversed lsp with
The path of the main lsp is identical, contrary.
Optionally, storage medium is also configured to store the program code for executing following steps：Match according to first
Confidence breath is after main lsp configures two-way signaling, and method further includes：
S1 receives controller and passes through the second configuration information that the 2nd pcep is sent；
S2 is that standby lsp configures two-way signaling according to the second configuration information.
Optionally, storage medium is also configured to store the program code for executing following steps：
The second predetermined bit position is added in the presumptive area of the update update information of S1, the 2nd pcep, wherein second
Predetermined bit position is for identifying the second configuration information.
Optionally, storage medium is also configured to store the program code for executing following steps：
S1 is that the two-way signaling of the standby lsp configuration includes according to second configuration information：Match confidence according to described second
Breath is that the standby lsp configures two-way signaling, and is the second reversed lsp of the standby lsp creation, wherein the second reversed lsp and
The path of the standby lsp is identical, contrary.
Optionally, storage medium is also configured to store the program code for executing following steps：
At least one following information is also carried in S1, the 2nd pcep：It is the double of the standby lsp configuration for protecting
To the protection information of signaling, wherein the protection information, for detect current lsp from the main lsp and be switched to it is described standby
In the case where lsp, the reversed lsp for triggering current lsp is switched to the described second reversed lsp from the described first reversed lsp.
The embodiments of the present invention also provide a kind of storage mediums.Optionally, in the present embodiment, above-mentioned storage medium can
To be arranged to store the program code for executing following steps：
S1 sends the first configuration information to terminal by first path computing element communication protocol pcep, wherein first matches
Confidence breath is that primary label-switched path lsp configures two-way signaling for triggering terminal.
Optionally, storage medium is also configured to store the program code for executing following steps：Passing through first
Before pcep sends the first configuration information to terminal, method further includes：
S1 is added with the first predetermined bit position in the presumptive area of the initialization initiate information of the first pcep,
In, the first predetermined bit position is for identifying the first configuration information.
Optionally, storage medium is also configured to store the program code for executing following steps：
S1, first configuration information, being also used to trigger the terminal is that the main lsp creates the first reversed lsp,
In, the first reversed lsp is identical as the path of the main lsp, contrary.
Optionally, storage medium is also configured to store the program code for executing following steps：Passing through first
After pcep sends the first configuration information to terminal, method further includes：
S1 sends the second configuration information to terminal by the 2nd pcep, wherein the second configuration information is for triggering terminal
Standby lsp configures two-way signaling.
Optionally, storage medium is also configured to store the program code for executing following steps：Passing through second
Before pcep sends the second configuration information to terminal, method further includes：
S1 is added with the second predetermined bit position in the presumptive area of the update update information of the 2nd pcep, wherein the
Two predetermined bit positions are for identifying the second configuration information.
Optionally, storage medium is also configured to store the program code for executing following steps：
S1, second configuration information, being also used to trigger the terminal is that the standby lsp creates the second reversed lsp,
In, the second reversed lsp is identical as the standby path of lsp, contrary.
Optionally, storage medium is also configured to store the program code for executing following steps：
At least one following information is also carried in S1, the 2nd pcep：It is the double of the standby lsp configuration for protecting
To the protection information of signaling, wherein the protection information, for detect current lsp from the main lsp and be switched to it is described standby
In the case where lsp, the reversed lsp for triggering the current lsp of the terminal is switched to described second reversely from the described first reversed lsp
lsp.Optionally, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only memory (ROM, Read-
Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic or disk etc.
The various media that can store program code.
Optionally, in the present embodiment, processor is executed according to program code stored in storage medium：In this implementation
In example, processor is executed according to program code stored in storage medium：It receives controller and passes through first path computing element
The first configuration information that communication protocol pcep is sent；It is that primary label-switched path lsp configuration is double according to first configuration information
To signaling.
Optionally, in the present embodiment, processor is executed according to program code stored in storage medium：Described first
The first predetermined bit position is added in the presumptive area of the initialization initiate information of pcep, wherein the described first predetermined ratio
Special position is for identifying first configuration information.
Optionally, in the present embodiment, processor is executed according to program code stored in storage medium：According to described
First configuration information is that the two-way signaling of the main lsp configuration includes：It is that the main lsp configuration is double according to first configuration information
The first reversed lsp is created to signaling, and for the main lsp, wherein the path phase of the first reversed lsp and the main lsp
Together, contrary.
Optionally, in the present embodiment, processor is executed according to program code stored in storage medium：According to institute
After the first configuration information is stated as the two-way signaling of the main lsp configuration, the method also includes：The controller is received by the
The second configuration information that two pcep are sent；It is that standby lsp configures two-way signaling according to second configuration information.
Optionally, in the present embodiment, processor is executed according to program code stored in storage medium：Described second
The second predetermined bit position is added in the presumptive area of the update update information of pcep, wherein second predetermined bit position
For identifying second configuration information.
Optionally, in the present embodiment, processor is executed according to program code stored in storage medium：According to described
Second configuration information is that the two-way signaling of the standby lsp configuration includes：It is that the standby lsp configuration is double according to second configuration information
The second reversed lsp is created to signaling, and for the standby lsp, wherein the path phase of the second reversed lsp and the standby lsp
Together, contrary.
Optionally, in the present embodiment, processor is executed according to program code stored in storage medium：Described second
At least one following information is also carried in pcep：For protecting the protection information of the two-way signaling for the standby lsp configuration,
In, the protection information, in the case where detecting that current lsp is switched to the standby lsp from the main lsp, triggering to be worked as
The reversed lsp of preceding lsp is switched to the described second reversed lsp from the described first reversed lsp.Optionally, in the present embodiment, it handles
Device is executed according to program code stored in storage medium：It is sent out by first path computing element communication protocol pcep to terminal
Send the first configuration information, wherein first configuration information is that primary label-switched path lsp configuration is double for triggering the terminal
To signaling.
Optionally, in the present embodiment, processor is executed according to program code stored in storage medium：Passing through
It states before the first pcep sends first configuration information to the terminal, the method also includes：The first pcep's
It initializes and is added with the first predetermined bit position in the presumptive area of initiate information, wherein use first predetermined bit position
In mark first configuration information.
Optionally, in the present embodiment, processor is executed according to program code stored in storage medium：Described first
Configuration information, being also used to trigger the terminal is that the main lsp creates the first reversed lsp, wherein the first reversed lsp with
The path of the main lsp is identical, contrary.
Optionally, in the present embodiment, processor is executed according to program code stored in storage medium：Passing through
It states after the first pcep sends first configuration information to the terminal, the method also includes：By the 2nd pcep to institute
It states terminal and sends second configuration information, wherein second configuration information is that standby lsp configuration is double for triggering the terminal
To signaling.
Optionally, in the present embodiment, processor is executed according to program code stored in storage medium：Passing through
It states before the 2nd pcep sends second configuration information to the terminal, the method also includes：The 2nd pcep's
It updates and is added with the second predetermined bit position in the presumptive area of update information, wherein second predetermined bit position is for marking
Know second configuration information.
Optionally, in the present embodiment, processor is executed according to program code stored in storage medium：Described second
Configuration information, being also used to trigger the terminal is that the standby lsp creates the second reversed lsp, wherein the second reversed lsp and
The path of the standby lsp is identical, contrary.
Optionally, in the present embodiment, processor is executed according to program code stored in storage medium：Described second
At least one following information is also carried in pcep：For protecting the protection information of the two-way signaling for the standby lsp configuration,
In, the protection information, for triggering institute in the case where detecting that current lsp is switched to the standby lsp from the main lsp
The reversed lsp for stating the current lsp of terminal is switched to the described second reversed lsp from the described first reversed lsp.
Optionally, the specific example in the present embodiment can be with reference to described in above-described embodiment and optional embodiment
Example, details are not described herein for the present embodiment.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein
Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (18)
1. a kind of signaling configuration method, which is characterized in that including：
It receives controller and passes through the first configuration information that first path computing element communication protocol pcep is sent；
It is that primary label-switched path lsp configures two-way signaling according to first configuration information.
2. the method according to claim 1, wherein the initialization initiate information of the first pcep is pre-
Determine in region added with the first predetermined bit position, wherein first predetermined bit position is for identifying first configuration information.
3. according to the method described in claim 2, it is characterized in that, being that the main lsp is configured according to first configuration information
Two-way signaling includes：
It is that the main lsp configures two-way signaling, and creates the first reversed lsp for the main lsp according to first configuration information,
Wherein, the described first reversed lsp is identical as the path of the main lsp, contrary.
4. method according to claim 1 or 3, which is characterized in that be the main lsp according to first configuration information
After configuring two-way signaling, the method also includes：
It receives the controller and passes through the second configuration information that the 2nd pcep is sent；
It is that standby lsp configures two-way signaling according to second configuration information.
5. according to the method described in claim 4, it is characterized in that, the fate of the update update information of the 2nd pcep
The second predetermined bit position is added in domain, wherein second predetermined bit position is for identifying second configuration information.
6. according to the method described in claim 5, it is characterized in that, being that the standby lsp is configured according to second configuration information
Two-way signaling includes：
It is that the standby lsp configures two-way signaling, and creates the second reversed lsp for the standby lsp according to second configuration information,
Wherein, the described second reversed lsp is identical as the standby path of lsp, contrary.
7. according to the method described in claim 6, it is characterized in that, also carried in the 2nd pcep following information at least it
One：
For protecting the protection information of the two-way signaling for the standby lsp configuration, wherein the protection information, for detecting
In the case where being switched to the standby lsp to current lsp from the main lsp, the reversed lsp for triggering current lsp is anti-from described first
The described second reversed lsp is switched to lsp.
8. a kind of signaling configuration method, which is characterized in that including：
The first configuration information is sent to terminal by first path computing element communication protocol pcep, wherein first configuration
Information is that primary label-switched path lsp configures two-way signaling for triggering the terminal.
9. according to the method described in claim 8, it is characterized in that, by the first pcep to the terminal send described in
Before first configuration information, the method also includes：
The first predetermined bit position is added in the presumptive area of the initialization initiate information of the first pcep, wherein
First predetermined bit position is for identifying first configuration information.
10. according to the method described in claim 9, it is characterized in that, first configuration information, is also used to trigger the terminal
The first reversed lsp is created for the main lsp, wherein the first reversed lsp is identical as the path of the main lsp, direction phase
Instead.
11. the method according to claim 8 or 10, which is characterized in that sent out by the first pcep to the terminal
After sending first configuration information, the method also includes：
The second configuration information is sent to the terminal by the 2nd pcep, wherein second configuration information is described for triggering
Terminal is that standby lsp configures two-way signaling.
12. according to the method for claim 11, which is characterized in that sending institute to the terminal by the 2nd pcep
Before stating the second configuration information, the method also includes：
The second predetermined bit position is added in the presumptive area of the update update information of the 2nd pcep, wherein described
Second predetermined bit position is for identifying second configuration information.
13. according to the method for claim 12, which is characterized in that second configuration information is also used to trigger the end
End is that the standby lsp creates the second reversed lsp, wherein the second reversed lsp is identical as the standby path of lsp, direction phase
Instead.
14. according to the method for claim 13, which is characterized in that also carry following information at least in the 2nd pcep
One of：
For protecting the protection information of the two-way signaling for the standby lsp configuration, wherein the protection information, for detecting
In the case where being switched to the standby lsp to current lsp from the main lsp, the reversed lsp of the current lsp of the terminal is triggered from institute
It states the first reversed lsp and is switched to the described second reversed lsp.
15. a kind of signal deployment device, which is characterized in that including：
Receiving module matches confidence by the first of first path computing element communication protocol pcep transmission for receiving controller
Breath；
Configuration module, for being that primary label-switched path lsp configures two-way signaling according to first configuration information.
16. device according to claim 15, which is characterized in that the receiving module is also used to according to described first
Configuration information is to receive the second configuration that the controller is sent by the 2nd pcep after the main lsp configures two-way signaling
Information；And two-way signaling is configured for standby lsp according to second configuration information.
17. a kind of signal deployment device, which is characterized in that including：
Sending module, for sending the first configuration information to terminal by first path computing element communication protocol pcep, wherein
First configuration information is that primary label-switched path lsp configures two-way signaling for triggering the terminal.
18. device according to claim 17, which is characterized in that the sending module is also used to by described first
After pcep sends first configuration information to the terminal, second is sent to the terminal by the 2nd pcep and matches confidence
Breath, wherein second configuration information is that standby lsp configures two-way signaling for triggering the terminal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710326426.XA CN108880766A (en) | 2017-05-10 | 2017-05-10 | Signaling configuration method and device |
| PCT/CN2018/085559 WO2018205884A1 (en) | 2017-05-10 | 2018-05-04 | Signalling configuration method and apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710326426.XA CN108880766A (en) | 2017-05-10 | 2017-05-10 | Signaling configuration method and device |
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| CN114650241A (en) * | 2020-12-21 | 2022-06-21 | 中国移动通信有限公司研究院 | Tunnel path fault detection method, control method, device and communication node |
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Application publication date: 20181123 |