CN102957976B - Calculation path processing method and calculation path processing device and node - Google Patents
Calculation path processing method and calculation path processing device and node Download PDFInfo
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- CN102957976B CN102957976B CN201110245528.1A CN201110245528A CN102957976B CN 102957976 B CN102957976 B CN 102957976B CN 201110245528 A CN201110245528 A CN 201110245528A CN 102957976 B CN102957976 B CN 102957976B
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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
Abstract
The invention discloses a calculation path processing method, a calculation path processing device and a node. The calculation path processing method includes steps of binding ASON (automatic switch optical network) nodes with identical far ends in ASON nodes with transmission ports with same attribution values so as to form virtual traffic engineering (TE) links with different attribution values; judging whether attribution values identical with required attribution values of business exist in the attribute values corresponding to different virtual TE links; and if not, determining calculation paths to be failed. By the calculation path processing method, accuracy of the calculation paths is guaranteed.
Description
Technical field
The present invention relates to the communications field, calculates road processing method, device and node in particular to a kind of.
Background technology
In recent years, developing rapidly with technical field of communication, ASON (Automatic Switched
Optical Network, referred to as ASON) as a kind of emerging optical network management pattern, due to its intellectuality, personalization etc.
Feature becomes the focus of industry research in recent years and application.At the same time, due to reasons such as cost and history, traditional network exists
Large-scale application is still suffered from the communications field.Therefore, how effectively to be interconnected ASON with legacy network is just become
One research topic of industry.For example, a kind of ASON is disclosed with tradition in Chinese No. 200610063057.1 patent
The method of the network interconnection, the method is by the legacy network that will be connected between ASON nodes with a kind of virtual traffic engineering
The mode of (Traffic Engineering, referred to as TE) link is allocated to the ASON nodes on upper strata, so that legacy network
Resource substantially effectively can be used in ASON networks.
Although virtual TE Link solves the problems, such as that ASON is interconnected with legacy network, but there is also defect：When one it is virtual
The cascade number that TE Link is included is than needing to set up the cascade number of business while when having high and low, although business is returned in calculation Lu Shihui
Return successfully, but failure can be returned in Resources allocation.Although in the case where there is other available resources, business after retrying several times
May be successfully established, but, such mode can but cause the foundation of business or recover efficiency to substantially reduce.Additionally, working as
When there is substantial amounts of virtual TE Link resource, if at this moment needing to set up business, how effectively manager's substantial amounts
Virtual TE Link is also the difficult problem that ASON faces.
The content of the invention
Present invention is primarily targeted at a kind of calculation road processing method, device and node are provided, at least to solve above-mentioned asking
One of topic.
According to an aspect of the invention, there is provided a kind of calculate road processing method, the method comprises the steps：Harness
There is identical distal end ASON nodes in ASON nodes and there is the delivery port of same alike result value, to form virtual TE Link, its
In, the ASON nodes and the distal end ASON nodes are by another network connection, the ASON nodes and the distal end ASON
The Internet resources of node intersect mapping relations configuration consistency, and different virtual property values corresponding to TE Link are different；When road is calculated
Judge in the property value corresponding to different virtual TE Links with the presence or absence of with the property value identical property value required for business；
In the case of judged result is non-existent, road failure is calculated.
Preferably, the property value is concatenation level.
Preferably, judge when road is calculated in the property values corresponding to different virtual TE Links with the presence or absence of with required for business
Property value identical property value include：For each virtual TE Link, the maximum cascade supported by the virtual TE Link is noticed
Grade and minimum concatenation level are the concatenation level of the virtual TE Link；When road is calculated, described each virtual TE Link is judged
In corresponding concatenation level with the presence or absence of with the concatenation level identical concatenation level required for the business.
Preferably, notice maximum concatenation level that the virtual TE Link supported and minimum concatenation level is the virtual TE
The concatenation level of link includes：The maximum concatenation level supported using the notice virtual TE Link that floods and minimum cascade etc.
Level, wherein, the maximum concatenation level and the minimum concatenation level are carried and are flooded in information in link.
Preferably, each virtual TE Link has unique mark, wherein, described to identify for indicating the virtual TE Link
With the property value corresponding to the virtual TE Link.
According to another aspect of the present invention, a kind of calculation road processing meanss are additionally provided, the device includes：Form module,
For having identical distal end ASON nodes the delivery port with same alike result value in harness ASON nodes, virtual TE chains are formed
Road, wherein, the ASON nodes and the distal end ASON nodes are by another network connection, the ASON nodes and the distal end
The Internet resources of ASON nodes intersect mapping relations configuration consistency, and different virtual property values corresponding to TE Link are different；Judge
Module, for judge corresponding to different virtual TE Links when road is calculated property value in the presence or absence of with the category required for business
Property value identical property value；Determining module, in the case of judged result is non-existent, calculates road failure for determining.
Preferably, the property value is concatenation level.
Preferably, the judge module is additionally operable to for each virtual TE Link, notices what the virtual TE Link was supported
Maximum concatenation level and minimum concatenation level are the concatenation level of the virtual TE Link；When road is calculated, described each void is judged
Intend TE Link corresponding to concatenation level in the presence or absence of with the concatenation level identical concatenation level required for the business.
Preferably, the judge module is additionally operable to noticing maximum concatenation level and the minimum supported by the virtual TE Link
When concatenation level is the concatenation level of the virtual TE Link, the maximum level supported using the notice virtual TE Link that floods
Connection grade and minimum concatenation level, wherein, the maximum concatenation level and the minimum concatenation level are carried and are flooded in link
In information.
According to a further aspect of the invention, a kind of ASON nodes are additionally provided, the ASON nodes include any of the above-described
Described calculation road processing meanss.
By the present invention, using to having identical distal end ASON nodes the transmission with same alike result value in ASON nodes
Port carries out harness to form virtual TE Link, and the resource value of resource value and virtual TE Link required for business is set up is carried out
Relatively, in the case where comparative result is for difference, road failure is calculated, is solved in prior art cannot be in the case of Resources allocation
Still repeatedly calculate road and cause business foundation or recover efficiency reduce problem, so as to improve business set up and recover
Efficiency.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the structural representation according to ASON networks related to the present embodiment with legacy network interconnection；
Fig. 2 is the flow chart of calculation road processing method according to embodiments of the present invention；
Fig. 3 is the structured flowchart of calculation road processing meanss according to embodiments of the present invention；
Fig. 4 is the flow chart of the management method of the virtual TE Link resources of ASON according to the preferred embodiment of the invention；
Fig. 5 is the schematic diagram that ASON networks according to the preferred embodiment of the invention and legacy network interconnect management；
Fig. 6 is the resource pipe of the delivery port one virtual TE Link of generation with legacy network interconnection according to correlation technique
The schematic diagram of reason mode；
Fig. 7 is the schematic diagram of TE Link resource management mode according to embodiments of the present invention.
Specific embodiment
Below with reference to accompanying drawing and in conjunction with the embodiments describing the present invention in detail.It should be noted that not conflicting
In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
In the examples below, ASON networks are attached by another network, and another network can be legacy network,
Or can also develop the new network type for occurring with technology, another network can be understood as the net of non-ASON
Network.But, no matter which kind of network another network is, as long as occurring in that the problem appeared in background technology, following examples
Can be suitable for.Therefore, illustrate by taking legacy network as an example in following examples, but and be limited to this.
Fig. 1 is the structural representation according to ASON networks related to the present embodiment with legacy network interconnection, such as Fig. 1 institutes
Show, ASON and legacy network can be empty with one kind by the legacy network (for example, SDH network) being connected between ASON nodes
The mode for intending TE Link is allocated to the ASON nodes on upper strata, so as to be interconnected.In the architecture, can be general by changing route
Big vast agreement solving the problems of the prior art, but, the modification of agreement is more complicated, and efficiency comparison is low.Based on this,
In this enforcement, there is provided a kind of that road processing method, in the method, property value (for example, the resource provided by virtual TE Link are provided
Value) can be made whether that identical compares with the property value set up required for business, in the case where comparative result is differed, calculate
Road fails, and so as to solve the problems, such as that calculation road is repeated in the case of resource is unmatched, improves efficiency.
Fig. 2 is the flow chart of calculation road processing method according to embodiments of the present invention, as shown in Fig. 2 the flow process include it is as follows
Step：
Step S202, has identical distal end ASON nodes in harness ASON nodes and has the transmission end of same alike result value
Mouthful, to form virtual TE Link, wherein, ASON nodes and distal end ASON nodes pass through another network (for example, any traditional net
Network, especially SDH legacy networks) connect, the Internet resources of ASON nodes and distal end ASON nodes intersect mapping relations configuration one
Cause, different virtual property values corresponding to TE Link are different；
Step S204, in the property value for judging corresponding to different virtual TE Links when road is calculated with the presence or absence of with business institute
The property value identical property value of needs, for example, the property value can be concatenation level；
Step S206, in the case of judged result is non-existent, it is determined that calculate road failure.
The feelings differed by above-mentioned steps, the property value provided with virtual TE Link in the property value required for business
Under condition, the failure of calculation road is determined that, so as to solve in prior art still cannot calculating repeatedly road in the case of Resources allocation
Cause the foundation of business or recover the problem that efficiency is reduced, so as to improve the efficiency that business is set up and recovered.
Used as a preferably embodiment, the property value can be concatenation level, now, notice the virtual TE Link institute
The maximum concatenation level of support and minimum concatenation level are the concatenation level of the virtual TE Link；When road is calculated, each is judged
In virtual concatenation level corresponding to TE Link with the presence or absence of with the concatenation level identical concatenation level required for business.
As another preferably embodiment, can be with by the way of flooding, i.e., using flooding for notice mode
Maximum concatenation level and minimum concatenation level that virtual TE Link is supported is noticed, wherein, maximum concatenation level and minimum are cascaded
Grade is carried and is flooded in information in link.It is reliable that notice is carried out by the way of flooding.
Preferably, each virtual TE Link has unique mark, wherein, identifies for indicating virtual TE Link and virtual TE
Property value corresponding to link.So, the unique mark can be distinguished virtual TE Link and can indicate virtual TE Link again, real
It is existing fairly simple.
In the present embodiment, additionally provide it is a kind of calculate road processing meanss, the device is used for realizing above-described embodiment and its excellent
The embodiment of choosing, carried out illustrating are repeated no more, and below the modules that this pair device is related to are illustrated.
As used below, term " module " can realize the combination of the software and/or hardware of predetermined function.Although following examples
Described system and method are preferably with software realizing, but hardware, or the realization of the combination of software and hardware is also
May and be contemplated.
Fig. 3 is the structured flowchart of calculation road processing meanss according to embodiments of the present invention, as shown in figure 3, the structure includes shape
Into module 30, judge module 32 and determining module 34.Below the modules and its function of the device are illustrated.
Module 30 is formed, for there is in harness ASON nodes identical distal end ASON nodes and there is same alike result value (example
Such as concatenation level) delivery port, form virtual TE Link, wherein, ASON nodes and distal end ASON nodes pass through another network
The Internet resources of connection, ASON nodes and distal end ASON nodes intersect mapping relations configuration consistency, and different virtual TE Link institutes are right
The property value answered is different；Judge module 32 is connected to form module 30, the judge module 32 for calculate road when judge different
In virtual property value corresponding to TE Link with the presence or absence of with the property value identical property value required for business；Determining module 34
Judge module 32 is connected to, the determining module 34 calculates road failure for determining in the case of judged result is non-existent.
As a preferably embodiment, so that property value (also referred to as cascades rank) as concatenation level as an example, mould is judged
Block 32 is additionally operable to for each virtual TE Link, notices maximum concatenation level that the virtual TE Link supported and minimum cascade etc.
Level is the concatenation level of the virtual TE Link；When road is calculated, in judging each concatenation level corresponding to virtual TE Link it is
No presence and the concatenation level identical concatenation level required for business.
Used as another preferably embodiment, judge module 32 is additionally operable to be supported most noticing the virtual TE Link
When big concatenation level and minimum concatenation level are the concatenation level of the virtual TE Link, using the virtual TE Link institute of notice that floods
The maximum concatenation level of support and minimum concatenation level, wherein, maximum concatenation level and minimum concatenation level are carried in link
Flood in information.
In the present embodiment, a kind of ASON nodes are additionally provided, the ASON nodes include the upper of any one or its combination
State the calculation road processing meanss of embodiment and its preferred implementation.
Illustrate as a example by being connected with traditional SDH network with reference to preferred embodiment, illustrate, this is preferable to carry out
Example combines above-described embodiment and its preferred implementation, in the preferred embodiment, there is provided a kind of virtual TE chains of ASON
The method of road resource management, the method can be effectively managed to virtual TE Link resource, also, it is general only need to change link
Big vast information, need not changing route and flood agreement, so as to ensure that correctness of the business on virtual TE Link Shang Suan roads, improve
The foundation of business and recovery efficiency.
Fig. 4 is the flow chart of the management method of the virtual TE Link resources of ASON according to the preferred embodiment of the invention, such as Fig. 4
Shown, the flow process comprises the steps：
S402, according to the configuration at traditional networking, completes ASON node delivery port resources and the biography being connected with traditional networking
The configuration of the corresponding relation of system Internet resources.That is, in management plane, on the basis of setting up connection in legacy network, complete
ASON resources intersect the configuration of mapping relations.
It should be noted that the configuration of ASON nodes must arrange two ASON of distal end in connection legacy network and mutually
Complete in node, the mapping relations of configuration need consistent, and mapping relations herein can be the time interval resource of two ASON nodes
Corresponding relation.
S404, for ASON nodes have an identical distal end and the delivery port with same alike result carries out harness, and according to
Different concatenation levels forms different virtual TE Links.Wherein, the resource of harness may belong to different delivery ports, but must
Same cascade number must be belonged to, or belong to non-cascaded.Meanwhile, the ASON nodes in opposite end also need to carry out at identical harness
Manage, also, the virtual TE Link ID of harness formation need to be different from the TE Link ID of general delivery port, and which can be distinguished and belong to
Which standard cascade rank (for example, standard cascade rank can including 1,4,16,64.... etc.).
S406, carries out the notice in ASON networks for the virtual TE Link formed after harness.Wherein, the content of notice can
With including total bandwidth, i.e. the total number of the resource of harness；Idle bandwidth, i.e. untapped resource total number；Maximum available level
Connection number and minimum cascade number, i.e. be the corresponding cascade number of virtual TE Link after harness.
Using this preferred embodiment, can flood information in the route for only changing link, route without modification is concrete
In the case of agreement, the calculation road problem of virtual TE Link is efficiently solved, while it is a large amount of with legacy network to solve ASON networks
During interconnection, the problem of management of virtual TE Link.
Fig. 5 is the schematic diagram that ASON networks according to the preferred embodiment of the invention and legacy network interconnect management, such as Fig. 5 institutes
Show, two node NODE1 and NODE2 and traditional network of ASON networks are interconnected, wherein each node and legacy network
Node has 3 delivery ports to be connected with each other.NODE1 and NODE2 is 1.1 with the delivery port of the transmission network interconnection respectively,
1.2nd, 1.3 and 2.1,2.2,2.3.Delivery port ID can be generated according to the mode required in standard agreement, it is also possible to which system is certainly
Oneself definition (for example, 1.1 corresponding delivery ports ID are can customize as 0x8404101,2.1 corresponding port ids can customize for
0x8408101), illustrate by taking the ID of self-defining above-mentioned port as an example below.
The first step：It is NODE2 that 1.1 corresponding virtual remote nodes are configured in NODE1, and distal end delivery port is 2.1, and is set
Resource tag mapping relations are put, table one is the esource impact relation table at virtual TE Link two ends.
Table one
| The time interval resource of 1.1 ports of NODE1 | The time interval resource of 2.1 ports of NODE2 |
| 1# (non-cascaded) | 3# (non-cascaded) |
| 5# (4 cascade) | 9# (4 cascade) |
| 17# (16 cascade) | 33# (16 cascade) |
As shown in Table 1, node only supports that standard is cascaded, i.e., only support cascade number to be 1,4,16,256..., and bandwidth point
With must spatially carry out in the continuous slot of data link, and meet specific starting time slots requirement, for example, meet 4 and cascade
Starting time slots there was only 1,5,9,13.....The port 2.2 of the correspondence NODE2 of port 1.2 of same NODE1,1.3 corresponding end of port
Mouth 2.3, and also have same time interval resource corresponding relation.
Second step：As three delivery ports, 1.1,1.2, the 1.3 corresponding virtual remote nodes of NODE1 are all NODE2,
Therefore these three ports can be carried out harness.In order to distinguish harness link and general delivery port, arrange the ID's of harness link
Span is 0x1001-0xFFFF, wherein, often carries out a harness, then distribute a harness link ID；If deleting one
Individual harness, then discharge corresponding harness link ID, and the ID can be used by other harnesses again.
It should be noted that for the resource of harness, forming new virtual TE Link according to its different concatenation level.Example
Such as, No. 1 time slot of the 1.1 of non-cascaded, 1.2 No. 1 time slot, 1.3 No. 1 time slot, harness form a new TE Link, its
In, TE Link ID is can be, but not limited to into line position or operation on the basis of harness link ID, but, obtain new TE Link ID
Method can be arbitrarily can be in the way of distinguishing different TE Links.For example, it is assumed that harness link ID is 0x1001, then non-level
The ID for joining corresponding TE Link is that line position or operation are entered with 0x10000 in harness link ID positions, and the ID that can obtain TE Link is
0x11001.Non-cascaded, 4 cascades, 16 cascades, 64 cascades ... are identified respectively can using 1,2,3,4..., such that it is able to obtain 4
The ID for cascading corresponding virtual TE Link is 0x21001, and the corresponding TE Link ID of 16 cascades is 0x31001.Therefore, NODE1 and
Virtual TE Link between NODE2 has 0x11001,0x21001,0x31001.
3rd step：Flooded corresponding virtual TE Link bandwidth information according to specific resource situation.
It is as a example by with ospf (Open Shortest Path First, referred to as OSPF), wherein empty
The total idle bandwidth for intending the 0x11001 of TE Link is 3 VC4, supported maximum label switched path (Label
Switching Path, referred to as LSP) with a width of VC4, supported minimum bandwidth is also VC4；Equally, TE Link 0x21001
Idle bandwidth is 12 VC4, and supported minimum and maximum LSP is 4 VC4；TE Link 0x21001 idle bandwidths are 48
VC4, supported minimum and maximum LSP are 16 VC4.
It follows that for the same ASON nodes being connected with transmission network, for through transmitting after network with phase
Carry out after harness with the delivery port of distal end, different virtual TE Links are defined according to different cascade ranks.Hence for
The virtual TE Link of same node has carried out unified management on the basis of cascade number, is conducive to the unified allocation of resources of traditional resource
And use.
In prior art, Jing is commonly present the resource pipe with delivery port one virtual TE Link of generation of legacy network interconnection
Reason mode.Fig. 6 is the resource pipe of the delivery port one virtual TE Link of generation with legacy network interconnection according to correlation technique
The schematic diagram of reason mode, Fig. 7 are the schematic diagrams of TE Link resource management mode according to embodiments of the present invention.Deposit with reference to 6
The process that the technical problem is solved in problem and Fig. 7 is illustrated.
As shown in Figure 6, it is assumed that legacy network is only configured with the connection of non-cascaded and 16 cascades, then the port 1.1 of NODE1 is given birth to
Into TE Link ID=0x8404101, its virtual remote for NODE2 delivery port 2.1.Table two is the esource impact of configuration
Relation table.
Table two
| The time interval resource of 1.1 ports of NODE1 | The time interval resource of 2.1 ports of NODE2 |
| 1# (non-cascaded) | 3# (non-cascaded) |
| 2# (non-cascaded) | 4# (non-cascaded) |
| 17# (16 cascade) | 33# (16 cascade) |
As shown in Table 2, the idle bandwidth of virtual TE Link be 18 VC4, the maximum LSP of support with a width of 16 VC4,
Minimum LSP is VC4.Hypothesis needs the connection that the cascade number for setting up NODE1 a to NODE2 is 4 VC4, and two sections
Only virtual TE Link 0x8404101 between point.So, when road is calculated, due to 1 ＜, 4 ＜ 16, therefore calculation road Time Bandwidth is
Meet demand, but when Resources allocation, the resource of not corresponding 4 cascade so results in calculation road success, distribution
Resource fails, and due to calculating road success, therefore can repeatedly calculate road, such case is still occurring after number of retries.
As shown in fig. 7, for NODE1 can generate two TE Links：0x11001,0x31001.As 0x11001 is only supported
Maximum cascade number and minimum cascade number are the connection establishment of VC4, and 0x31001 only supports that maximum cascade number and minimum cascade number are equal
For 16 connection establishment, therefore will fail during being connected to calculation road.If in the case where there is other resources, completely
Unnecessary calculation road can be reduced to retry, the efficiency of connection establishment is substantially increased.
In another embodiment, additionally provide a kind of road of calculating and process software, the software is used for performing above-described embodiment
And the technical scheme described in preferred embodiment.
In another embodiment, a kind of storage medium is additionally provided, be stored with the storage medium above-mentioned software, should
Storage medium includes but is not limited to CD, floppy disk, hard disk, scratch pad memory etc..
The above, only of the invention is embodied as case, and protection scope of the present invention is not limited thereto, any ripe
Those skilled in the art are known in technical specification of the present invention, modifications of the present invention or replacement all should be in the present invention
Protection domain within.
Obviously, those skilled in the art should be understood that each module or each step of the above-mentioned present invention can be with general
Computing device realizing, they can be concentrated on single computing device, or are distributed in multiple computing devices and are constituted
Network on, alternatively, they can be realized with the executable program code of computing device, such that it is able to be stored in
By computing device performing in storage device, or they are fabricated to each integrated circuit modules respectively, or by them
Multiple modules or step be fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hard
Part and software are combined.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. it is a kind of to calculate road processing method, it is characterised in that to include：
There is identical distal end ASON nodes in harness Automatic Switched Optical Network node and there is the transmission end of same alike result value
Mouthful, to form virtual traffic engineering TE link, wherein, the ASON nodes and the distal end ASON nodes are connected by another network
Connect, the Internet resources of the ASON nodes and the distal end ASON nodes intersect mapping relations configuration consistency, different virtual TE chains
Property value corresponding to road is different；
In the property value for judging corresponding to different virtual TE Links when road is calculated with the presence or absence of with the property value required for business
Identical property value；
In the case of judged result is non-existent, road failure is calculated.
2. method according to claim 1, it is characterised in that the property value is concatenation level.
3. method according to claim 2, it is characterised in that judge the category corresponding to different virtual TE Links when road is calculated
With the presence or absence of including with the property value identical property value required for business in property value：
For each virtual TE Link, notice maximum concatenation level that the virtual TE Link supported and minimum concatenation level is
The concatenation level of the virtual TE Link；
When road is calculated, judge described in each concatenation level corresponding to virtual TE Link with the presence or absence of with required for the business
Concatenation level identical concatenation level.
4. method according to claim 3, it is characterised in that notice the maximum concatenation level supported by the virtual TE Link
The concatenation level that the virtual TE Link is with minimum concatenation level includes：
The maximum concatenation level supported using the notice virtual TE Link that floods and minimum concatenation level, wherein, it is described most
Big concatenation level and the minimum concatenation level are carried and are flooded in information in link.
5. method according to any one of claim 1 to 4, it is characterised in that each virtual TE Link has unique mark
Know, wherein, the property value identified for indicating the virtual TE Link and corresponding to the virtual TE Link.
6. it is a kind of to calculate road processing meanss, it is characterised in that to include：
Module is formed, for having identical distal end ASON nodes the transmission end with same alike result value in harness ASON nodes
Mouthful, virtual TE Link is formed, wherein, the ASON nodes and the distal end ASON nodes are by another network connection, described
The Internet resources of ASON nodes and the distal end ASON nodes intersect mapping relations configuration consistency, and difference is virtually corresponding to TE Links
Property value it is different；
Judge module, for judge corresponding to different virtual TE Links when road is calculated property value in the presence or absence of with business institute
The property value identical property value of needs；
Determining module, in the case of judged result is non-existent, calculates road failure for determining.
7. device according to claim 6, it is characterised in that the property value is concatenation level.
8. device according to claim 7, it is characterised in that the judge module for for each virtual TE Link,
Notice the concatenation level that maximum concatenation level that the virtual TE Link supported and minimum concatenation level are the virtual TE Link；
When road is calculated, judge described in each concatenation level corresponding to virtual TE Link with the presence or absence of with the level required for the business
Connection grade identical concatenation level.
9. device according to claim 8, it is characterised in that the judge module is for noticing the virtual TE Link institute
It is when the maximum concatenation level of support and minimum concatenation level are the concatenation level of the virtual TE Link, described using the notice that floods
Maximum concatenation level and minimum concatenation level that virtual TE Link is supported, wherein, the maximum concatenation level and the minimum
Concatenation level is carried and is flooded in information in link.
10. a kind of Automatic Switched Optical Network node, it is characterised in that include：Dress any one of claim 6-9
Put.
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| CN201110245528.1A CN102957976B (en) | 2011-08-25 | 2011-08-25 | Calculation path processing method and calculation path processing device and node |
| PCT/CN2012/076869 WO2013026310A1 (en) | 2011-08-25 | 2012-06-13 | Path-calculation processing method, device and node |
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| CN201110245528.1A CN102957976B (en) | 2011-08-25 | 2011-08-25 | Calculation path processing method and calculation path processing device and node |
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| US20080002664A1 (en) * | 2006-06-02 | 2008-01-03 | Huawei Technologies Co., Ltd. | Method and system for multi-domain route computation |
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