CN104301223B - The method and device that the label switched path of Virtual Private Network is established - Google Patents
The method and device that the label switched path of Virtual Private Network is established Download PDFInfo
- Publication number
- CN104301223B CN104301223B CN201310310157.XA CN201310310157A CN104301223B CN 104301223 B CN104301223 B CN 104301223B CN 201310310157 A CN201310310157 A CN 201310310157A CN 104301223 B CN104301223 B CN 104301223B
- Authority
- CN
- China
- Prior art keywords
- label
- address
- source
- target
- loopback mouth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
An embodiment of the present invention provides the method and device that the label switched path of Virtual Private Network VPN a kind of is established, the Virtual Private Network VPN includes：Source service provider network edge equipment PE and target service provider network edge device PE, the described method includes：The first loopback mouth IP address of the source PE configuration targets PE；When the source PE receives the label information that the target PE is sent, the second loopback mouth IP address of the target PE is extracted from the label information；If the first loopback mouth IP address is consistent with the second loopback mouth IP address, judge that the label switching path LSP of source PE to the target PE can use.The problem of embodiment of the present invention can prevent flow obstructed, since source PE to the LSP of target PE can be established in time, the problem of the loss of data packet can be reduced to greatest extent, prevent flow obstructed, more preferable experience sense is provided the user with, improves the service quality of service provider network.
Description
Technical field
The present invention relates to network communication technology field, more particularly to a kind of tag changeable path of Virtual Private Network VPN
The method and device that footpath is established.
Background technology
With the development of network technology, VPN（Virtual Private Network, virtual private networks）Increasingly by
To the favor of people, and MPLS（Multiprotocol Label Switching, multi protocol label exchange）VPN due to
Good scalability and higher flexibility, are one of VPN technologies quickly grown at present.But in the forwarding of VPN messages
During, due to the unreliability of network, any one node or a link break down, and can all cause the interruption of business,
In order to improve the reliability of network, the method through being protected frequently with path redundancy.
A kind of networking distribution map of Virtual Private Network with reference to shown in Fig. 1, the virtual private networks include CE
（Customer Edge, user network boundary device）, PE（Provider Edge, service provider network edge equipment）, with
And P (Provider, service provider network backbone equipment), employ BFD (Bidirectional for PE1
Forwarding Detection, two-way converting detection) and FRR (Fast ReRoute, quick heavy-route) protected, when
When PE2 breaks down, it can quickly be perceived by BFD mechanism and PE1 can be notified to switch over routed path using FRR in time.
The VPN route that CE2 is issued to CE1, passage path 1 and path 2 can be published to CE1.Wherein, path 1 is CE2-->
PE2-->P-->PE1, path 2 are CE2-->PE3-->P-->PE1.PE1 the two neighbouring devices can be obtained from PE2 and PE3
Path 1 and path 2, and path 1 can be arranged to main path, path 2 is arranged to standby path.Although can by BFD testing mechanisms
To accomplish the tangent using FRR（Standby path is switched to from main path）Time within 50ms, but after PE2 is restarted, uses
FRR carries out switchback（I.e. from standby path switchback main path）Can there is a situation where packet loss afterwards.
The content of the invention
The technical problem to be solved is that provide a kind of label switched path of Virtual Private Network VPN for the embodiment of the present invention
The method of foundation, to the Virtual Private Network VPN of recovery resource PE in time to target PE, therefore can be reduced to greatest extent
The loss of data packet, the problem of preventing flow obstructed, provides the user with more preferable experience sense, improves service provider network
Service quality.
Correspondingly, the embodiment of the present invention additionally provides the device that the label switched path of Virtual Private Network VPN is established.
To solve the above-mentioned problems, the embodiment of the invention discloses a kind of label switched path of Virtual Private Network VPN
The method of foundation, it is characterised in that the Virtual Private Network VPN includes：Source service provider network edge equipment PE and mesh
Service provider network edge equipment PE is marked, the described method includes：
The first loopback mouth IP address of the source PE configuration targets PE；
When the source PE receives the label information that the target PE is sent, the mesh is extracted from the label information
Mark the second loopback mouth IP address of PE；
If the first loopback mouth IP address is consistent with the second loopback mouth IP address, judge the source PE to target PE's
Label switching path LSP can use.
Preferably, the method further includes：
If the first loopback mouth IP address and the second loopback mouth IP address are inconsistent, the source PE to target PE is judged
Label switching path LSP it is unavailable.
Preferably, the label information is label mapping message label map, described when source PE receives the target PE
During the label information of transmission, the step of the second loopback mouth IP address that the target PE is extracted from the label information, includes：
The source PE receives the label map that the target PE is sent；The label map include the second loopback mouth IP
Address；
The session parameter for establishing LSP preset according to its source PE, extracts the second loopback mouth in the label map
IP address, and the first loopback mouth IP address that the second loopback mouth IP address is formerly configured with it is contrasted.
Preferably, the target PE is used to be sent to the label map using the autonomous label distribution mode DU in downstream
The source PE.
It is described the embodiment of the invention also discloses the method that the label switched path of Virtual Private Network VPN a kind of is established
Virtual Private Network VPN includes：Source service provider network edge equipment PE and target service provider network edge device PE,
Wherein, the source PE is used for the first loopback mouth IP address for configuring target PE；The described method includes：
The target PE sends label information to the source PE, and the source PE is used for from the label information described in extraction
The second loopback mouth IP address of target PE, and it is consistent with the second loopback mouth IP address in the first loopback mouth IP address, judge
The label switching path LSP of source PE to the target PE can use.
Preferably, the step of target PE sends label information to the source PE includes：
The second loopback mouth IP address of the target PE is write label mapping message label map by the target PE；
The label map are sent to the source PE by the target PE.
It is described the embodiment of the invention also discloses the device that the label switched path of Virtual Private Network VPN a kind of is established
Virtual Private Network VPN includes：Source service provider network edge equipment PE and target service provider network edge device PE,
Described device includes：
Positioned at the configuration module of source PE, for configuring the first loopback mouth IP address of target PE；
Positioned at the label information receiving module of source PE, during for receiving label information that the target PE is sent, from institute
State the second loopback mouth IP address that the target PE is extracted in label information；
Label switched path positioned at source PE can use determination module, if for the first loopback mouth IP address and the second ring
IP address of answering back is consistent, then judges that the label switching path LSP of source PE to the target PE can use.
Preferably, described device further includes：
Positioned at the unavailable determination module of the label switched path of source PE, if the first loopback mouth IP address and the second loopback
Mouth IP address is inconsistent, then judges that the label switching path LSP of source PE to the target PE are unavailable.
Preferably, the label information receiving module positioned at source PE includes：
Positioned at the receiving submodule of source PE, the label map sent for receiving the target PE；The label map
Include the second loopback mouth IP address；
Positioned at the extracting sub-module of source PE, for the session parameter of establishing LSP preset according to its, the label is extracted
The second loopback mouth IP address in map, and by the second loopback mouth IP address and its first loopback mouth IP formerly configured
Location is contrasted.
It is described the embodiment of the invention also discloses the device that the label switched path of Virtual Private Network VPN a kind of is established
Virtual Private Network VPN includes：Source service provider network edge equipment PE and target service provider network edge device PE；
Described device includes：
Positioned at the label information sending module of target PE, for sending label information to the source PE, the source PE is used for
Extract the second loopback mouth IP address of the target PE from the label information, and in the first loopback mouth IP address and the
Two loopback mouth IP address are consistent, judge that the label switching path LSP of source PE to the target PE can use；
Preferably, the second label switched path determination module includes：
Positioned at the write-in submodule of target PE, for the second loopback mouth IP address of the target PE to be write label
map；
Positioned at the sending submodule of target PE, for the label map to be sent to the source PE.
Compared with prior art, the embodiment of the present invention includes advantages below：
In embodiments of the present invention, when the loopback mouth IP address of source PE configuration targets PE, built between source PE and target PE
Vertical association.The label information for carrying its loopback mouth IP address is sent to source PE by target PE, and source PE judges the loopback formerly configured
Whether the loopback mouth IP address of target PE of the mouth IP address with being extracted from label information is consistent, if unanimously, judging the source
The label switching path LSP of PE to target PE can use, the problem of with this to prevent flow obstructed, due to that can establish source PE in time
To the LSP of target PE, therefore the problem of the loss of data packet can be reduced to greatest extent, prevent flow obstructed, to user
More preferable experience sense is provided, improves the service quality of service provider network.
Brief description of the drawings
Fig. 1 is a kind of networking distribution map of Virtual Private Network；
Fig. 2 is the embodiment of the method 1 that the label switched path of Virtual Private Network VPN of the embodiment of the present invention a kind of is established
Step flow chart；
Fig. 3 is the embodiment of the method 2 that the label switched path of Virtual Private Network VPN of the embodiment of the present invention a kind of is established
Step flow chart；
Fig. 4 is the device embodiment 1 that the label switched path of Virtual Private Network VPN of the embodiment of the present invention a kind of is established
Structure diagram；
Fig. 5 is the device embodiment 2 that the label switched path of Virtual Private Network VPN of the embodiment of the present invention a kind of is established
Structure diagram.
Embodiment
To enable the above-mentioned purpose of the embodiment of the present invention, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings and
Embodiment is described in further detail the embodiment of the present invention.
One of the core concepts of the embodiments of the present invention is that source PE configures the loopback mouth IP address of target PE, when the source
When PE receives the label information that the target PE is sent, the loopback mouth IP of the target PE is extracted from the label information
Location, if the loopback mouth IP address being locally configured is consistent with the loopback mouth IP address that label information carries, judges the source
The LSP of PE to target PE can use, the problem of with this to prevent flow obstructed.
With reference to Fig. 2, the method that the label switched path of Virtual Private Network VPN of the embodiment of the present invention a kind of is established is shown
The step flow chart of embodiment 1, the Virtual Private Network VPN can include：Source service provider network edge equipment PE and
Target service provider network edge device PE, the method may include：
Step 101, the first loopback mouth IP address of the source PE configuration targets PE；
Under normal circumstances, at least two LSP in Virtual Private Network VPN, and wherein a LSP is arranged to main road
Footpath, other LSP are arranged to standby path.When the target PE failures in main path（down）When, source PE can switch to standby path.
After target PE is restarted, since service provider network core equipment P does not perceive the business of Virtual Private Network,
Corresponding processing cannot be made to private network business, causes source PE correctly to be established with target PE and is connected, cause both data
Bag ground is lasting to be lost, and the problem of flow is obstructed occurs.
In embodiments of the present invention, the loopback mouth IP address of target PE is being locally configured in source PE first, is preserved in local
On the loopback mouth IP address of target PE, the initial information as LSP between source PE and target PE.
Step 102, when the source PE receives the label information that the target PE is sent, carried from the label information
Take the second loopback mouth IP address of the target PE；
In one preferred embodiment of the invention, the step 102 can include：
Sub-step S11, the source PE receive the label map that the target PE is sent；The label map include
Two loopback mouth IP address；
Sub-step S12, the session parameter for establishing LSP preset according to its source PE, is extracted in the label map
Second loopback mouth IP address, and the second loopback mouth IP address and its first loopback mouth IP address formerly configured are carried out pair
Than.
In embodiments of the present invention, in order to allow private network business smoothly to walk the LSP between target PE and source PE, source PE exists
The loopback mouth IP address of target PE has been locally configured it, so when receiving the label map that multiple PE are sent, source PE can be according to
According to its preset session parameter for establishing LSP, extract the loopback mouth IP address in the label map that it is received, judge and which
LSP between a little PE can use.
Specifically, target PE carries loopback mouth IP address using the extended field of label map and sends to source PE, source PE from
The loopback mouth IP address of target PE is extracted in the extended field of the label map.
Wherein, label mapping message Label map forms are as follows：
The extension message of label mapping message Label map is as follows：
Type Length Value
0x3FFE("egress node address") 4 egress’s ip
Specifically, when when source, PE receives Label map, source PE extracts target from the extended field of Label map
The loopback mouth IP address of PE, i.e. egress ' s ip, with loopback mouth IP address egress ' the s ip of target PE that formerly configure into
Row compares.
In one preferred embodiment of the invention, the target PE is used to use the autonomous label distribution mode DU in downstream will
The label mapping message label map are sent to the source PE.
In practice, the autonomous label distribution mode in downstream can be used（DU, Downstream Unsolicited）,
I.e. for a specific FEC（Forwarding Equivalence Class, forwarding equivalence class）, upstream device need not be from upper
Swimming equipment acquisition label request message can be into row label autonomous distribution and distribution.For the embodiment of the present invention, you can
Made by target PE and label map are distributed into specific FEC（That is label binding）Decision, target PE make decision after will
Label map are sent to corresponding source PE.
Step 103, if the first loopback mouth IP address is consistent with the second loopback mouth IP address, the source PE is judged extremely
The label switching path LSP of target PE can use.
In embodiments of the present invention, when source PE extracts the loopback mouth IP of target PE from the extended field of Label map
During address, if the loopback mouth IP address of target PE is consistent with the loopback mouth IP address that source PE is configured, illustrate that source PE's is virtual
The business of dedicated network can walk the LSP between target PE.The tag changeable path of Virtual Private Network VPN is so completed in time
The connection of footpath LSP, can reduce the loss of data packet to greatest extent, carry out more preferable experience sense to user.
For the embodiment of the present invention is simultaneously for service provider, the link that can also be saved between source PE and target PE is opened
Pin, while networking can be simplified.
In one preferred embodiment of the invention, the method can also include：
If the first loopback mouth IP address and the second loopback mouth IP address are inconsistent, the source PE to target PE is judged
Label switching path LSP it is unavailable.
In the concrete realization, if the loopback mouth IP address for the PE that source PE is extracted from Label map, the ring of the PE is found
IP address of answering back and the loopback mouth IP address that source PE is configured are inconsistent, then illustrate that the business of the Virtual Private Network of source PE cannot
Walk and the LSP between the PE.
With reference to Fig. 3, the method that the label switched path of Virtual Private Network VPN of the embodiment of the present invention a kind of is established is shown
The step flow chart of embodiment 2, the Virtual Private Network VPN can include：Source service provider network edge equipment PE and
Target service provider network edge device PE, the method may include：
Target PE described in step 201 sends label information to the source PE, and the source PE is used for from the label information
The second loopback mouth IP address of the target PE is extracted, and in the first loopback mouth IP address and the second loopback mouth IP address one
Cause, judge that the label switching path LSP of source PE to the target PE can use
In a kind of preferred embodiment of the embodiment of the present invention, the step 201 can include：
The second loopback mouth IP address of the target PE is write label mapping message by sub-step S21, the target PE
label map；
The label map are sent to the source PE by sub-step S22, the target PE.
In the concrete realization, when target PE restarts, main path is switched back into from standby path, in order to be built again with source PE
Vertical connection, target PE carry loopback mouth IP address using label map and send to source PE, from the label map after source PE receptions
In extract the loopback mouth IP address of target PE, if the loopback port address for the target PE that source PE is formerly configured is taken with label map
The loopback mouth IP address of band is consistent, represents that the LSP between target PE and source PE can use, so completes Virtual Private Network in time
The connection of VPN, can reduce the loss of data packet to greatest extent, carry out more preferable experience sense to user.
In order to make those skilled in the art further appreciate that the embodiment of the present invention, for a specific example
The label switched path Establishing process of bright Virtual Private Network VPN.
1, source PE carry out the relevant configuration of the quick heavy-route FRR of Virtual Private Network VPN, wherein, it also provided target
The LSP of Virtual Private Network VPN is established in the loopback mouth IP address of PE, networking；
2, the target PE in public network are followed label switching protocol LDP and are sent using the autonomous label distribution mode DU in downstream
Label information, i.e. downstream plant are actively to upstream plant distribution label map；
3, target PE utilize the extended field of label map, carry loopback mouth IP address (i.e. LSR-ID, route-id) and arrive
Source PE；
4, source PE check that its loopback mouth IP address being locally configured extends word with label map after label map are received
Whether the loopback mouth IP address entrained by section is identical, if identical, then it represents that the flow of source PE can be by between target PE
LSP walk public network, if it is not the same, then represent source PE flow public network cannot be walked by the LSP between target PE.
It should be noted that for embodiment of the method, in order to be briefly described, therefore it is all expressed as to a series of action group
Close, but those skilled in the art should know, the application and from the limitation of described sequence of movement, because according to this Shen
Please, some steps can use other orders or be carried out at the same time.Secondly, those skilled in the art should also know, specification
Described in embodiment belong to preferred embodiment, necessary to involved action not necessarily the application.
With reference to Fig. 4, the device that the label switched path of Virtual Private Network VPN of the embodiment of the present invention a kind of is established is shown
The structure diagram of embodiment, the Virtual Private Network VPN can include：Source service provider network edge equipment PE and target
Service provider network edge equipment PE, described device can include：
Positioned at the configuration module 301 of source PE, for configuring the first loopback mouth IP address of target PE；
Positioned at the label information receiving module 302 of source PE, during for receiving label information that the target PE is sent, from
The second loopback mouth IP address of the target PE is extracted in the label information；
Label switched path positioned at source PE can use determination module 303, if for the first loopback mouth IP address and the
Two loopback mouth IP address are consistent, then judge that the label switching path LSP of source PE to the target PE can use.
In one preferred embodiment of the invention, described device can also include：
Positioned at the unavailable determination module of the label switched path of source PE, if the first loopback mouth IP address and the second loopback
Mouth IP address is inconsistent, then judges that the label switching path LSP of source PE to the target PE are unavailable.
In one preferred embodiment of the invention, the label information positioned at source PE receives 302 modules and can include：
Positioned at the receiving submodule of source PE, the label map sent for receiving the target PE；The label map
Include the second loopback mouth IP address；
Positioned at the extracting sub-module of source PE, for the session parameter of establishing LSP preset according to its, the label is extracted
The second loopback mouth IP address in map, and by the second loopback mouth IP address and its first loopback mouth IP formerly configured
Location is contrasted.
In a kind of preferred embodiment of the embodiment of the present invention, the target PE is used to use the autonomous label distribution side in downstream
The label map are sent to the source PE by formula DU.
With reference to Fig. 5, the dress that the label switched path of Virtual Private Network VPN of the embodiment of the present invention a kind of is established is shown
The structure diagram of embodiment is put, the Virtual Private Network VPN can include：Source service provider network edge equipment PE and mesh
Service provider network edge equipment PE is marked, described device can include：
Positioned at the label information sending module 401 of target PE, for sending label information to the source PE, the source PE is used
In the second loopback mouth IP address that the target PE is extracted from the label information, and the first loopback mouth IP address with
Second loopback mouth IP address is consistent, judges that the label switching path LSP of source PE to the target PE can use；
In a kind of preferred embodiment of the embodiment of the present invention, the second label switched path determination module 401 can wrap
Include：
Positioned at the write-in submodule of target PE, for the second loopback mouth IP address of the target PE to be write label mapping
Message label map；
Positioned at the sending submodule of target PE, for the label map to be sent to the source PE.
For device embodiment, since it is substantially similar to embodiment of the method, so description is fairly simple, it is related
Part illustrates referring to the part of embodiment of the method.
Each embodiment in this specification is described by the way of progressive, what each embodiment stressed be with
The difference of other embodiment, between each embodiment identical similar part mutually referring to.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, apparatus or computer program
Product.Therefore, the application can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the application can use the computer for wherein including computer usable program code in one or more
The computer program production that usable storage medium is implemented on (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is with reference to the flow according to the method for the embodiment of the present application, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or square frame in journey and/or square frame and flowchart and/or the block diagram.These computer programs can be provided
Instruct all-purpose computer, special purpose computer, it is embedding go out formula processor or other programmable data processing devices processor to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices, which produces, to be used in fact
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided and is used for realization in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a square frame or multiple square frames.
Although having been described for the preferred embodiment of the application, those skilled in the art once know basic creation
Property concept, then can make these embodiments other change and modification.So appended claims be intended to be construed to include it is excellent
Select embodiment and drop out all change and modification of the application scope.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only include that
A little key elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except also there are other identical element in the process, method, article or apparatus that includes the element.
The method that the label switched path of the Virtual Private Network VPN provided above the embodiment of the present invention a kind of is established
And device, it is described in detail, specific case used herein carries out the principle and embodiment of the embodiment of the present invention
Illustrate, the explanation of above example is only intended to help to understand the method and its core concept of the embodiment of the present invention；It is meanwhile right
In those of ordinary skill in the art, according to the thought of the embodiment of the present invention, can in specific embodiments and applications
There is change part, in conclusion this specification content should not be construed as the limitation to the embodiment of the present invention.
Claims (9)
1. the method that the label switched path of Virtual Private Network VPN a kind of is established, it is characterised in that the Virtual Private Network
VPN includes：Source service provider network edge equipment PE and target service provider network edge device PE, the method bag
Include：
The first loopback mouth IP address of the source PE configuration targets PE；
When the source PE receives the label information that the target PE is sent, the target PE is extracted from the label information
The second loopback mouth IP address, receive the label map that the target PE sends including the source PE；The label
Map includes the second loopback mouth IP address；The session parameter for establishing LSP preset according to its source PE, extracts the label
The second loopback mouth IP address in map, and by the second loopback mouth IP address and its first loopback mouth IP formerly configured
Location is contrasted；Wherein described label information is label mapping message label map；
If the first loopback mouth IP address is consistent with the second loopback mouth IP address, the label of the source PE to target PE is judged
Switching path LSP can be used.
2. according to the method described in claim 1, it is characterized in that, further include：
If the first loopback mouth IP address and the second loopback mouth IP address are inconsistent, the mark of the source PE to target PE is judged
It is unavailable to sign switching path LSP.
3. according to the method described in claim 1, it is characterized in that, the target PE is used to use the autonomous label distribution side in downstream
The label map are sent to the source PE by formula DU.
4. the method that the label switched path of Virtual Private Network VPN a kind of is established, it is characterised in that the Virtual Private Network
VPN includes：Source service provider network edge equipment PE and target service provider network edge device PE, wherein, the source
PE is used for the first loopback mouth IP address for configuring target PE；The described method includes：
The target PE sends label information to the source PE, and the source PE is used to extract the target from the label information
The second loopback mouth IP address of PE, and it is consistent with the second loopback mouth IP address in the first loopback mouth IP address, described in judgement
The label switching path LSP of source PE to target PE can use, and the label of the target PE transmissions is received including the source PE
map；The label map include the second loopback mouth IP address；The session for establishing LSP ginseng preset according to its source PE
Number, extracts the second loopback mouth IP address in the label map, and the second loopback mouth IP address is formerly configured with it
The first loopback mouth IP address contrasted；Wherein described label information is label mapping message label map.
5. according to the method described in claim 4, it is characterized in that, the target PE sends the step of label information to the source PE
Suddenly include：
The second loopback mouth IP address of the target PE is write label mapping message label map by the target PE；
The label map are sent to the source PE by the target PE.
6. the device that the label switched path of Virtual Private Network VPN a kind of is established, it is characterised in that the Virtual Private Network
VPN includes：Source service provider network edge equipment PE and target service provider network edge device PE, described device bag
Include：
Positioned at the configuration module of source PE, for configuring the first loopback mouth IP address of target PE；
Positioned at the label information receiving module of source PE, during for receiving label information that the target PE is sent, from the mark
The second loopback mouth IP address of the target PE is extracted in label information, including：Positioned at the receiving submodule of source PE, for connecing
Receive the label map that the target PE is sent；The label map include the second loopback mouth IP address；Positioned at carrying for source PE
Submodule is taken, for the session parameter of establishing LSP preset according to its, extracts the second loopback mouth IP in the label map
Address, and the first loopback mouth IP address that the second loopback mouth IP address is formerly configured with it is contrasted；It is wherein described
Label information is label mapping message label map；
Label switched path positioned at source PE can use determination module, if for the first loopback mouth IP address and the second loopback mouth
IP address is consistent, then judges that the label switching path LSP of source PE to the target PE can use.
7. device according to claim 6, it is characterised in that described device further includes：
Positioned at the unavailable determination module of the label switched path of source PE, if the first loopback mouth IP address and the second loopback mouth IP
Address is inconsistent, then judges that the label switching path LSP of source PE to the target PE are unavailable.
8. the device that the label switched path of Virtual Private Network VPN a kind of is established, it is characterised in that the Virtual Private Network
VPN includes：Source service provider network edge equipment PE and target service provider network edge device PE, wherein, the source
PE is used for the first loopback mouth IP address for configuring target PE；Described device includes：
Positioned at the label information sending module of target PE, for sending label information to the source PE, the source PE is used for from institute
The second loopback mouth IP address that the target PE is extracted in label information is stated, and in the first loopback mouth IP address and the second ring
IP address of answering back is consistent, judges that the label switching path LSP of source PE to the target PE can use, and is received including the source PE
The label map that the target PE is sent；The label map include the second loopback mouth IP address；The source PE is according to it
The preset session parameter for establishing LSP, extracts the second loopback mouth IP address in the label map, and by second ring
The first loopback mouth IP address that IP address of answering back formerly is configured with it is contrasted；Wherein described label information disappears for label mapping
Cease label map.
9. device according to claim 8, it is characterised in that further include：Second label switched path determination module, bag
Include：
Positioned at the write-in submodule of target PE, for the second loopback mouth IP address of the target PE to be write label map；
Positioned at the sending submodule of target PE, for the label map to be sent to the source PE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310310157.XA CN104301223B (en) | 2013-07-19 | 2013-07-19 | The method and device that the label switched path of Virtual Private Network is established |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310310157.XA CN104301223B (en) | 2013-07-19 | 2013-07-19 | The method and device that the label switched path of Virtual Private Network is established |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104301223A CN104301223A (en) | 2015-01-21 |
| CN104301223B true CN104301223B (en) | 2018-05-15 |
Family
ID=52320796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310310157.XA Active CN104301223B (en) | 2013-07-19 | 2013-07-19 | The method and device that the label switched path of Virtual Private Network is established |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104301223B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101651582A (en) * | 2009-09-24 | 2010-02-17 | 中兴通讯股份有限公司 | Method and system for detecting link connectivity of multi-protocol label switching (MPLS) network |
| US8339973B1 (en) * | 2010-09-07 | 2012-12-25 | Juniper Networks, Inc. | Multicast traceroute over MPLS/BGP IP multicast VPN |
| CN103166852A (en) * | 2013-03-06 | 2013-06-19 | 杭州华三通信技术有限公司 | Traceroute method for label switched paths (LSP) in multi-protocol label switching (MPLS) network and routing equipment |
-
2013
- 2013-07-19 CN CN201310310157.XA patent/CN104301223B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101651582A (en) * | 2009-09-24 | 2010-02-17 | 中兴通讯股份有限公司 | Method and system for detecting link connectivity of multi-protocol label switching (MPLS) network |
| US8339973B1 (en) * | 2010-09-07 | 2012-12-25 | Juniper Networks, Inc. | Multicast traceroute over MPLS/BGP IP multicast VPN |
| CN103166852A (en) * | 2013-03-06 | 2013-06-19 | 杭州华三通信技术有限公司 | Traceroute method for label switched paths (LSP) in multi-protocol label switching (MPLS) network and routing equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104301223A (en) | 2015-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105453491B (en) | Long-range LFA is extended quickly to re-route | |
| US11050588B2 (en) | Method and system of overlay flow control | |
| CN103380605B (en) | The MPLS of LDP is used to re-route method and the NE of LDP-FRR fast | |
| US8842522B2 (en) | Incremental deployment of MRT based IPFRR | |
| US8467289B2 (en) | Optimized fast re-route in MPLS ring topologies | |
| CN107347032B (en) | Message forwarding method and device | |
| US8203965B1 (en) | Layered approach for representing and analyzing virtual private network services | |
| CN103891220B (en) | The MPLS using LDP quickly re-routes method and the NE of (LDP-FRR) | |
| CN106487675A (en) | For the outlet protection in EVPN with BUM flow during link failure | |
| CN104380671B (en) | The increase failure covering in classification, redundancy, QoS routing selection | |
| US20130077475A1 (en) | Optimizing Endpoint Selection of MRT-FRR Detour Paths | |
| CN103684953B (en) | Avoid flow loss method, apparatus in the multi-link Ethernet Circle to VPLS transmission networks | |
| CN107070788A (en) | Pass through the long-range loop free alternate backup path MLDP only quick heavy-routes of multicast | |
| CN102594613B (en) | Method and device for failure diagnosis of multi-protocol label switching virtual private network (MPLS VPN) | |
| CN106789264A (en) | The method and apparatus that a kind of link aggregation group passage is switched fast | |
| CN108234200A (en) | Communication processing method and device based on access ring | |
| CN105471599B (en) | Protection switching method and network equipment | |
| CN103595641B (en) | A kind of tag distribution protocol apparatus and method synchronous with Interior Gateway Protocol | |
| CN106572012A (en) | VPN FRR implementation method and PE equipment | |
| CN102510354A (en) | Dual-home-supported ring network method and system based on virtual private local area network (LAN) service (VPLS) and G8032 | |
| CN102065020B (en) | Method and device for transmitting L2VPN service by using tunnel group in MPLS network | |
| CN107623633B (en) | Path establishment method, device and network node | |
| US20150281050A1 (en) | Method for Adjacency Status Synchronization in Label Distribution Protocol | |
| WO2011147298A1 (en) | Method and apparatus for resetting layer 3 virtual private network routes | |
| CN104717143A (en) | Method and equipment for many-one reducibility scene multicast data transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Applicant after: Xinhua three Technology Co., Ltd. Address before: 310053 Hangzhou science and Technology Development Zone, Zhejiang high tech park, No. six and road, No. 310 Applicant before: Huasan Communication Technology Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |