CN102843618B - The method and device that SNCP is protected when ASON is docked with legacy network - Google Patents
The method and device that SNCP is protected when ASON is docked with legacy network Download PDFInfo
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Abstract
The method and device that SNCP is protected when being docked the present invention relates to a kind of ASON with legacy network, including：Foundation is mutually related the first business and the second business；First business and the second business only source node or destination node in the domain of ASON networks, or the first business and the second business source node and destination node not in the domain of ASON networks；According to first business that is mutually related and the second business SNCP protections are provided for ASON networks.Two business that are mutually related that the present invention passes through foundation so which domain no matter ASON networks be in, and can provide the function of being protected similar to 1+1 (path).Two business, which can individually have, simultaneously recovers attribute, when path failure occurs in ASON domains, the dynamic heavy-route of control plane can be realized in ASON domains, so as to improve the security of ASON networks.
Description
Technical field
The present invention relates to ASON field, more particularly to based on SDH (Synchronous Digital
Hierarchy, SDH) a kind of ASON (Automatically Switched Optical Network, automatically
Switched optical network) when being docked with legacy network SNCP (Subnetwork Connection Protection, Subnetwork connection is protected
Shield) protection method and device.
Background technology
Generally, the survivability of network refers to that network remains to the ability for continuing normally to run when breaking down.In order to strengthen
The availability of transmission net, and the integrality of existing call is maintained, ASON networks need to use certain protection and Restoration Mechanism.
The recovery of ASON networks refers to reappear routing to substitute the connection of failure by using the idle capacity of network.
The mode of recovery based on control plane is mainly dynamic heavy-route, after failure generation, sets up recovery in real time using signaling
Path.
The protection mechanism of ASON network supports can be divided into two types：Protection based on transport plane and based on control plane
Protection.Wherein, the protection based on control plane occurs between the source node and destination node of control plane protected field, passes through source
Coordinate to complete the operation of protection mechanism between node and destination node.Using more generally in protection based on control plane
1+1 end-to-end (path) is protected.
And in actual networking, in fact it could happen that the situation that ASON networks are docked with legacy network, now it is also required to provide 1+1
Trail protection.As shown in Figure 1a, domain A is ASON domains, and domain B is tradition SDH/MSTP networks, and an active node is in ASON domains；Or
Person, as shown in Figure 1 b, when domain A and domain C is tradition SDH (Synchronous Digital Hierarchy, synchronous digital transmission
System)/MSTP (Multi-Service Transfer Platform, multi-service transport platform) network, domain B be ASON networks
When, the source of business, destination node be not in ASON networks (domain B)；When domain B is traditional SDH/MSTP networks and domain A or domain C is
During ASON networks, only active (or place) node is in ASON domains.Existing solution can not realize above two scene simultaneously
Under ASON networks with tradition dock when 1+1 protection, so as to reduce the security of ASON networks.
The content of the invention
It is a primary object of the present invention to provide the method and device that SNCP is protected when a kind of ASON is docked with legacy network,
It is intended to improve the security of ASON networks.
In order to achieve the above object, the method that the present invention proposes SNCP protections when a kind of ASON is docked with legacy network, bag
Include：
Foundation is mutually related the first business and the second business；First business and the second business only source node or Su Jie
Point in the domain of ASON networks, or first business and the second business source node and destination node not in ASON networks
In domain；
According to first business that is mutually related SNCP protections are provided with the second business for ASON networks.
Preferably, when only source node or destination node are in the domain of ASON networks for first business and the second business, institute
Stating the step of foundation is mutually related the first business with the second business includes：
Set up unshielded first business；
From with business time-slot in the first business identical, set up second business, and specify and described first
Business association.
Preferably, it is described to set up the second business, and include the step of specify with first business association：
The local information of the second business is set up, and preserves in the local information of the second business the association industry of second business
Business is designated first business；And the local information of first business is obtained, and in the local letter of first business
The associated services that first business is preserved in breath are designated second business；
The routing iinformation of first business is taken out from the local information of first business, initiates to calculate road request；
When first business and the second business follow strict unrelated routing policy, asked to complete according to the calculation road
The foundation of second business；Otherwise, the second business sets up failure, is preserved in the local message for cancelling first, second business
Incidence relation.
Preferably, it is described to be included according to the foundation for calculating road request the second business of completion：
When the source node issues intersection request, concurrent excellent receive is formed between first business and the second business and is closed
System.
Preferably, it is described to set up the second business, and further comprise the step of specify with first business association：Work as institute
When stating the first business and the second business and not following strict unrelated routing policy, warning information is prompted the user with.
Preferably, when the source node and destination node of first business and the second business be not in the domain of ASON networks
When, the step of foundation is mutually related the first business with the second business includes：
Two business are set up, respectively as the first business and the second business；
Associate Command is respectively sent to the source node of first, second business, by two business respectively respective local
Other side's service identification is preserved in information to identify for the associated services of itself；
Information interaction passage is created between the source node of first, second business, the association of two business is carried out；
After being successfully associated, the correlation protection relation of two business is set up, by described information exchange channels, described
First, both routing iinformations are mutually sent out between the second business.
Preferably, the type of service of first business and the second business includes at least one of：1+1SNCP business,
MSP business or unprotect business.
Preferably, in addition to：Safeguard the routing iinformation of first, second business.
The present invention also proposes the device that SNCP is protected when a kind of ASON is docked with legacy network, including：
Module is set up in association, for setting up first business that is mutually related and the second business；First business and second
Business only source node or destination node in the domain of ASON networks, or first business and the second business source node and Su Jie
Point is not in the domain of ASON networks；
Protection module, provides SNCP for ASON networks with the second business for first business that is mutually related according to and protects
Shield.
Preferably, module is set up in the association includes：
First sets up unit, for setting up unshielded first business；
Second sets up unit, for selection and business time-slot in the first business identical, sets up second business,
And specify and first business association.
Preferably, described second set up unit and include：
Service identification subelement, the local information for setting up the second business, and protected in the local information of the second business
The associated services for depositing second business are designated first business；And the local information of acquisition first business, and
The associated services that first business is preserved in the local information of first business are designated second business；
Calculation way unit, the routing iinformation for taking out first business from the local information of first business,
Initiate to calculate road request；
Subelement is set up, for when first business and the second business follow strict unrelated routing policy, according to
The calculation road request completes the foundation of the second business；Otherwise, the second business sets up failure, cancels first, second business
The incidence relation preserved in local message.
Preferably, the subelement of setting up is additionally operable to when the source node issues intersection request, in first business
Concurrent excellent receipts relation is formed between the second business；And when first business and the second business do not follow strict unrelated road
By strategy when, prompt the user with warning information.
Preferably, module is set up in the association includes：
3rd sets up unit, for setting up two business, respectively as the first business and the second business；
Transmitting element, the source node for Associate Command to be respectively sent to first, second business is distinguished by two business
Other side's service identification is preserved in respective local information to identify for the associated services of itself；
Passage creating unit, for creating information interaction passage between the source node of first, second business, carries out two
The association of bar business；
4th sets up unit, the correlation protection relation for after being successfully associated, setting up two business, passes through described information
Exchange channels, mutually send out both routing iinformations between first, second business.
When a kind of ASON proposed by the present invention is docked with legacy network SNCP protect method and device, when only it is active (or
Place) node not in ASON domains when, two can be allowed when Article 2 business is set up, while first business of specified associations
Bar business can have same upper (or under) business time-slot, realize that the concurrent of channel signal excellent is received；When sourcesink node does not exist
When in ASON domains, user is taken to issue the method that association request is set to the source node of two business respectively, it is not necessary to two sections
Point interaction can set up incidence relation to provide SNCP protections, while increasing an associated services does not follow routing policy alarm,
When prompting user needs to adjust associated services route to provide complete SNCP protections.Therefore, the present invention passes through foundation
Be mutually related two business so which domain no matter ASON networks be in, and can provide what is protected similar to 1+1 (path)
Function.When failure occurs overseas in ASON, it can switch, Protection path is switched to from operating path.While the two
Business, which can individually have, recovers attribute, and when path failure occurs in ASON domains, control can be realized in ASON domains
The dynamic heavy-route of plane, so as to improve the security of ASON networks.
Brief description of the drawings
Fig. 1 a are the first schematic diagram of a scenario when ASON of the present invention is docked with legacy network；
Fig. 1 b are second of schematic diagram of a scenario when ASON of the present invention is docked with legacy network；
Fig. 2 is the embodiment schematic flow sheet of method one that SNCP is protected when ASON of the present invention is docked with legacy network；
Fig. 3 is to be built when ASON of the present invention is docked with legacy network in the embodiment of method one of SNCP protections under the first scene
The schematic flow sheet of vertical be mutually related the first business and the second business；
Fig. 4 is to be built when ASON of the present invention is docked with legacy network in the embodiment of method one of SNCP protections under the first scene
Vertical second business, and specify the schematic flow sheet with the first business association；
Fig. 5 is to be built when ASON of the present invention is docked with legacy network in the embodiment of method one of SNCP protections under second of scene
The schematic flow sheet of vertical be mutually related the first business and the second business；
Fig. 6 is the example structure schematic diagram of device one that SNCP is protected when ASON of the present invention is docked with legacy network；
Fig. 7 is the first embodiment in the embodiment of device one that SNCP is protected when ASON of the present invention is docked with legacy network
Association set up modular structure schematic diagram；
Fig. 8 is the first embodiment in the embodiment of device one that SNCP is protected when ASON of the present invention is docked with legacy network
The second structural representation for setting up unit；
Fig. 9 is second of embodiment in the embodiment of device one that SNCP is protected when ASON of the present invention is docked with legacy network
Association set up modular structure schematic diagram.
In order that technical scheme is clearer, clear, it is described in further detail below in conjunction with accompanying drawing.
Embodiment
Solution for embodiment of the invention is mainly：Pass through two business that are mutually related of foundation so that ASON networks
No matter which domain is in, the function of being protected similar to 1+1 (path) can be provided.Two business can individually have simultaneously
Recover attribute, when path failure occurs in ASON domains, the dynamic heavy-route of control plane can be realized in ASON domains, is carried
The security of high ASON networks.
As shown in Fig. 2 the method that one embodiment of the invention proposes SNCP protections when a kind of ASON is docked with legacy network, bag
Include：
Step S101, sets up first business that is mutually related and the second business；
Wherein, the first business and the second business only source node or destination node are in the domain of ASON networks, or the first business
Source node and destination node with the second business be not in the domain of ASON networks.
Step S102, SNCP protections are provided according to first business that is mutually related and the second business for ASON networks.
In order to realize the source of business, destination node is not in the domain of ASON networks and one of source, destination node exist
In the domain of ASON networks under two kinds of scenes, SNCP protections when ASON networks are docked with legacy network, current embodiment require that setting up
First business that is mutually related and the second business；There is provided according to first business that is mutually related and the second business for ASON networks
SNCP is protected.
First business (i.e. the first business alleged by the present embodiment) is initially set up, when only active (or place) node is not in ASON
When in the domain of network, when Article 2 business (i.e. the second business alleged by the present embodiment) is set up, while specified associations first
Bar business, allows two business to have same upper (or under) business time-slot, realizes that the concurrent of channel signal excellent is received；Work as sourcesink
When node is not in the domain of ASON networks, user is taken to issue the side of setting association request to the source node of two business respectively
Method, it is not necessary to which two node interactions can set up incidence relation to provide SNCP protections.
Specifically, as shown in figure 3, when the first business and the second business only source node or destination node are in the domain of ASON networks
When, in above-mentioned steps S101, the step of foundation is mutually related the first business with the second business includes：
Step S1011, sets up unshielded first business；
Step S1012, from business time-slot in the first business identical, set up the second business, and specify and the first industry
Business association.
As shown in figure 4, set up the second business in step S1012, and include the step of specify with the first business association：
Step S10121, sets up the local information of the second business, and preserve in the local information of the second business this second
The associated services of business are designated the first business；And the local information of the first business is obtained, and in the local letter of the first business
The associated services that first business is preserved in breath are designated the second business；
Step S10122, takes out the routing iinformation of the first business from the local information of the first business, initiates to calculate road request；
Step S10123, judges whether the first business follows strict unrelated routing policy with the second business, if so, then entering
Enter step S10124；Otherwise, into step S10125；
Step S10124, according to the foundation for calculating road request the second business of completion；
Step S10125, the second business sets up failure, and the association preserved in the local message for cancelling first, second business is closed
System, and prompt the user with warning information.
Wherein, included according to the foundation for calculating road request the second business of completion：
When the source node issues intersection request, concurrent excellent receipts relation is formed between the first business and the second business.
By taking the scene of only active node not in the domain (hereinafter referred to as ASON domains) of ASON networks as an example, two business are set up
The process of incidence relation is：
First, a unprotect business is set up as the first business, and it is A-B that it, which route, and it sets up process with common
The foundation of ASON business；
Then, Article 2 business is set up, as the second business, from the same upper business time-slot of the first business to constitute
The concurrent excellent receipts relation of channel signal, and the associated services that the first business is second business are specified, complete the second business and the
One business association.
Wherein, when setting up Article 2 business, the local information of the second business is initially set up, the association of second business is preserved
Service identification is the first business, while find the local information of the first business, and the associated services for preserving the first business are designated the
Two business；The route A-B of the first business is then taken out, initiates to calculate road request, it is desirable to the route of the second business and the first business
Route A-B follows strict unrelated routing policy (including node is unrelated, link is unrelated, SRLG is unrelated)；Because of two business source nodes
Identical, the routing iinformation of the first business can directly be obtained by its associated services mark.
Then, normal business is carried out by RSVP (RSVP) signaling and sets up process, wherein under source node
When hair intersects, it is desirable to which the first business intersects to form concurrent excellent receipts relation with the second business；If the second business sets up failure, need
The associated services mark of the first business is removed, and informs that user-association fails；If the second business is successfully established, that is, it is associated to
Work(.
For the scene of destination node not in ASON domains, it realizes affiliated party's case ibid, only need to save destination node as source
Point, reversely sets up business.
As shown in figure 5, when the source node and destination node of the first business and the second business be not in ASON domains, above-mentioned step
Setting up the step of being mutually related the first business with the second business in rapid S101 includes：
Step S1013, sets up two business, respectively as the first business and the second business；
Step S1014, Associate Command is respectively sent to the source node of first, second business, is existed respectively by two business
Other side's service identification is preserved in respective local information to identify for the associated services of itself；
Step S1015, creates information interaction passage between the source node of first, second business, carries out the pass of two business
Connection；
Step S1016, after being successfully associated, sets up the correlation protection relation of two business, by information interaction passage,
Both routing iinformations are mutually sent out between first, second business.
Wherein, the type of service of the first business and the second business can be 1+1SNCP business, MSP business or unprotect industry
Business.
For the scene of source, destination node not in ASON domains, two business are initially set up, type of service can be 1+
1SNCP business, MSP (Message Smart Platform, information intelligent platform) business or unprotect business etc., to business
Type is not limited.But the cascades of two business, single-direction and dual-direction need to be ensured, whether the parameter such as tunnel is consistent, so as to a business energy
Protection is provided to an other business.
Then, two business are associated.
The process that two business set up incidence relation is described below：
1st, to two sending down service Associate Commands, the Associate Command of business need to be sent to the first node of two business simultaneously
(i.e. source node)；
2nd, two business are received after Associate Command, and other side's service identification is preserved respectively and is identified for the associated services of oneself.Tool
Body, associated services take out the mark of another associated business from Associate Command, are stored in the local letter of the associated services
In breath, and it is saved in database, associated services mark can be regained when restarting so as to node.Two business of this process
Keep strokes, and carry out respectively.
3rd, it whether there is the passage of information exchange between two business of inspection, if it does not exist, then creating information interaction passage.
What the present embodiment was selected is to serve as information exchange by LMP (link association agreement) VIPCC (virtual control channel) created
Passage, sends OEM (private data) to carry out information exchange using VIPCC.The specific process for creating VIPCC can use existing
Mature technology scheme, be not described in detail here.It should be noted that, and the passage of the required carry out information exchange of the present invention do not limit
In using VIPCC.
4th, after being successfully associated, two business set up correlation protection relation, and send the routing iinformation of itself mutually.Two phases
The business of mutual correlation takes out the initial routing iinformation of itself, for initial routing iinformation, only includes unprotect from local information
With the work connection, the work of 1+1SNCP business and protection connection of MSP business.Then, it is assembled into privately owned number by certain form
According to the first node that associated business is sent to by VIPCC.Meanwhile, associated services can also receive associated business and send over
Data, by definition good format analysis be stored in into the routing iinformation of associated business in the local information of the associated services.For
The operation of database is reduced, routing iinformation can not warehousing.If meeting node to restart or power-down conditions, only need after restart
Routing iinformation is sent again.
In the present embodiment, in addition it is also necessary to which the routing iinformation of associated services is safeguarded, because the initial route letter of business
Breath is not constant always, and the possibility of the channel failure of existence information interaction, so under certain scene, associated services
Need the routing iinformation for notifying to be associated processing business and updates oneself.
Specifically, the initial routing iinformation of associated services because certain maintenance activities change when, need to be to associated business
First node send the routing iinformation of oneself.Maintenance activities includes but is not limited to service optimization, the business without reply-attribute and carried out
Recover, recovery connection is revised as initial connection etc..
When node is restarted, associated services recover the local information of the business from database, if existing associated
Business, then send the routing iinformation of oneself to the first node of associated business.
When the state for the passage for detecting information exchange changes, from failure to it is effective when because being handed in information
The following period of time of mutual channel failure, the routing iinformation of associated services itself may have occurred change, so being now also required to
The routing iinformation of oneself is sent to the first node of associated business.
Because the purpose of two business associations is to provide for 1+1SNCP protections, in terms of routing policy, associated two
Must be strict unrelated between bar business, current initial connection of this strategy just for business.That is, for optimization connection or
Person is a recovery connection without the business of reply-attribute, it is necessary to follow strict nothing with the current initial connection of associated business
The routing policy of pass；If the business with reply-attribute, it, which recovers connection, can select current initial with associated business
Connection follows strict unrelated or unrelated as possible routing policy.
In some scenarios, the initial connection that there are two associated services is unsatisfactory for the feelings of strict unrelated routing policy
Condition, when control plane can be unsatisfactory for strict unrelated routing policy in the route for detecting two associated services, on user
Report one is unsatisfactory for the alarm of routing policy.User receives can be using the means adjustment associated services such as optimization order after the alarm
Route.After strict unrelated routing policy is met, control plane disappears report and alarm, and specific implementation is to associate
When the initial routing iinformation of business itself changes or when receiving the routing iinformation of associated processing business and updates, now two need to be checked
Whether bar associated services meet strict unrelated routing policy.
Wherein, the initial connection of two associated services may be caused to be unsatisfactory for the situation bag of strict unrelated routing policy
Include：
1st, two business of first secondary association, are unsatisfactory for routing policy, or two business are ordered with optimization at present, make it
Be optimized to same route etc. user some maloperations.
2nd, the recovery action of control plane triggering.When two associated services simultaneous faults, because different first nodes are recovered to keep away
The initial connection for the simply current associated services opened, may cause two to recover connection and (for the business without reply, recover connection
Be equal to work connection) between be unsatisfactory for routing policy.
Due under 1+1SNCP protection mechanisms, it is desirable to which operating path follows strict unrelated routing policy with Protection path.
So, after incidence relation is set up, an associated services need to follow certain when recover etc. action with associated business
Routing policy, to provide SNCP protections.In the first above-mentioned scene, because source node is identical, the routing iinformation of the first business can
Directly to be obtained by service identification；In second of scene, associated services routing iinformation is associated business in routing iinformation
Sended over during change by information interaction passage., may because the source node of two business is different under second of scene
There is associated routing iinformation not upgrade in time, cause two business not follow strict unrelated routing policy, now control
Plane safeguards that an associated services do not follow the alarm status of routing policy.
In summary, the present embodiment can be provided similar to 1+1 (path) protections no matter which domain ASON networks are in
Function.When failure occurs overseas in ASON, it can switch, Protection path is switched to from operating path.Simultaneously this two
Individual business, which can individually have, recovers attribute, and when path failure occurs in ASON domains, control can be realized in ASON domains
The dynamic heavy-route of plane processed.
As shown in fig. 6, one embodiment of the invention proposes a kind of device of SNCP protections when ASON is docked with legacy network, bag
Include：Module 601 and protection module 602 are set up in association；Wherein：
Module 601 is set up in association, for setting up first business that is mutually related and the second business；First business and the second industry
Only source node or destination node be engaged in the domain of ASON networks, or the first business and the second business source node and destination node not
In the domain of ASON networks.
Protection module 602, is protected for providing SNCP with the second business for ASON networks according to first business that is mutually related
Shield.
In order to realize the source of business, destination node is not in the domain of ASON networks and one of source, destination node exist
In the domain of ASON networks under two kinds of scenes, SNCP protections when ASON networks are docked with legacy network, current embodiment require that setting up
First business that is mutually related and the second business；There is provided according to first business that is mutually related and the second business for ASON networks
SNCP is protected.
First business (i.e. the first business alleged by the present embodiment) is initially set up, when only active (or place) node is not in ASON
When in the domain of network, when Article 2 business (i.e. the second business alleged by the present embodiment) is set up, while specified associations first
Bar business, allows two business to have same upper (or under) business time-slot, realizes that the concurrent of channel signal excellent is received；Work as sourcesink
When node is not in the domain of ASON networks, user is taken to issue the side of setting association request to the source node of two business respectively
Method, it is not necessary to which two node interactions can set up incidence relation to provide SNCP protections.
Specifically, as shown in fig. 7, as the first embodiment, when the first business and the second business only source node or place
When node is in the domain of ASON networks, module 601 is set up in association to be included：First sets up unit 6011 and second sets up unit
6012, wherein：
First sets up unit 6011, for setting up unshielded first business；
Second sets up unit 6012, for selection and business time-slot in the first business identical, sets up the second business, and refer to
Fixed and the first business association.
As shown in figure 8, second sets up unit 6012 and includes：Service identification subelement 60121, calculate way unit 60122 and
Subelement 60123 is set up, wherein：
Service identification subelement 60121, the local information for setting up the second business, and in the local information of the second business
The middle associated services for preserving second business are designated first business；And the local information of acquisition first business,
And the associated services of first business are preserved in the local information of first business be designated second business；
Way unit 60122 is calculated, the routing iinformation for taking out the first business from the local information of the first business is initiated
Calculate road request；
Subelement 60123 is set up, for when the first business and the second business follow strict unrelated routing policy, according to
Calculate the foundation that road request completes the second business；Otherwise, the second business sets up failure, cancels the local of first, second business
The incidence relation preserved in message.
Further, subelement 60123 is set up to be additionally operable to when source node issues intersection request, in the first business and second
Concurrent excellent receipts relation is formed between business；And when the first business and the second business do not follow strict unrelated routing policy,
Prompt the user with warning information.
In the present embodiment, using only active node scene not in the domain (hereinafter referred to as ASON domains) of ASON networks as
, the process that two business set up incidence relation is：
First, a unprotect business is set up as the first business, and it is A-B that it, which route, and it sets up process with common
The foundation of ASON business；
Then, Article 2 business is set up, as the second business, from the same upper business time-slot of the first business to constitute
The concurrent excellent receipts relation of channel signal, and the associated services that the first business is second business are specified, complete the second business and the
One business association.
Wherein, when setting up Article 2 business, the local information of the second business is initially set up, the association of second business is preserved
Service identification is the first business, while find the local information of the first business, and the associated services for preserving the first business are designated the
Two business；The route A-B of the first business is then taken out, initiates to calculate road request, it is desirable to the route of the second business and the first business
Route A-B follows strict unrelated routing policy (including node is unrelated, link is unrelated, SRLG is unrelated)；Because of two business source nodes
Identical, the routing iinformation of the first business can directly be obtained by its associated services mark.
Then, normal business is carried out by RSVP signalings and sets up process, wherein when source node issues intersection, it is desirable to the
One business intersects to form concurrent excellent receipts relation with the second business；If the second business sets up failure, need to remove the first business
Associated services mark, and inform user-association fail；If the second business is successfully established, that is, it is successfully associated.
For the scene of destination node not in ASON domains, it realizes affiliated party's case ibid, only need to save destination node as source
Point, reversely sets up business.
As shown in figure 9, as second of embodiment, when the first business and the second business source node and destination node not
When in ASON domains, module 601 is set up in association to be included：3rd sets up unit 6013, transmitting element 6014, passage creating unit
6015 and the 4th unit 6016 is set up, wherein：
3rd sets up unit 6013, for setting up two business, respectively as the first business and the second business；
Transmitting element 6014, the first node for Associate Command to be respectively sent to first, second business, by two business
Respectively other side's service identification is preserved in respective local information to identify for the associated services of itself；
Passage creating unit 6015, for creating information interaction passage between the first node of first, second business, carries out two
The association of bar business；
4th sets up unit 6016, the correlation protection relation for after being successfully associated, setting up two business, passes through information
Exchange channels, mutually send out both routing iinformations between first, second business.
For the scene of source, destination node not in ASON domains, two business are initially set up, type of service can be 1+
1SNCP business, MSP business or unprotect business etc., are not limited type of service.But need to ensure two business cascade,
Single-direction and dual-direction, whether the parameter such as tunnel is consistent, so that a business can provide protection to an other business.
Then, two business are associated.
The process that two business set up incidence relation is described below：
1st, to two sending down service Associate Commands, the Associate Command of business need to be sent to the first node of two business simultaneously
(i.e. source node)；
2nd, two business are received after Associate Command, and other side's service identification is preserved respectively and is identified for the associated services of oneself.Tool
Body, associated services take out the mark of another associated business from Associate Command, are stored in the local letter of the associated services
In breath, and it is saved in database, associated services mark can be regained when restarting so as to node.Two business of this process
Keep strokes, and carry out respectively.
3rd, it whether there is the passage of information exchange between two business of inspection, if it does not exist, then creating information interaction passage.
What the present embodiment was selected is to serve as information exchange by LMP (link association agreement) VIPCC (virtual control channel) created
Passage, sends OEM (private data) to carry out information exchange using VIPCC.The specific process for creating VIPCC can use existing
Mature technology scheme, be not described in detail here.It should be noted that, and the passage of the required carry out information exchange of the present invention do not limit
In using VIPCC.
4th, after being successfully associated, two business set up correlation protection relation, and send the routing iinformation of itself mutually.Two phases
The business of mutual correlation takes out the initial routing iinformation of itself, for initial routing iinformation, only includes unprotect from local information
With the work connection, the work of 1+1SNCP business and protection connection of MSP business.Then, it is assembled into privately owned number by certain form
According to the first node that associated business is sent to by VIPCC.Meanwhile, associated services can also receive associated business and send over
Data, by definition good format analysis be stored in into the routing iinformation of associated business in the local information of the associated services.For
The operation of database is reduced, routing iinformation can not warehousing.If meeting node to restart or power-down conditions, only need after restart
Routing iinformation is sent again.
In the present embodiment, in addition it is also necessary to which the routing iinformation of associated services is safeguarded, because the initial route letter of business
Breath is not constant always, and the possibility of the channel failure of existence information interaction, so under certain scene, associated services
Need the routing iinformation for notifying to be associated processing business and updates oneself.
Specifically, the initial routing iinformation of associated services because certain maintenance activities change when, need to be to associated business
First node send the routing iinformation of oneself.Maintenance activities includes but is not limited to service optimization, the business without reply-attribute and carried out
Recover, recovery connection is revised as initial connection etc..
When node is restarted, associated services recover the local information of the business from database, if existing associated
Business, then send the routing iinformation of oneself to the first node of associated business.
When the state for the passage for detecting information exchange changes, from failure to it is effective when because being handed in information
The following period of time of mutual channel failure, the routing iinformation of associated services itself may have occurred change, so being now also required to
The routing iinformation of oneself is sent to the first node of associated business.
Because the purpose of two business associations is to provide for 1+1SNCP protections, in terms of routing policy, associated two
Must be strict unrelated between bar business, current initial connection of this strategy just for business.That is, for optimization connection or
Person is a recovery connection without the business of reply-attribute, it is necessary to follow strict nothing with the current initial connection of associated business
The routing policy of pass；If the business with reply-attribute, it, which recovers connection, can select current initial with associated business
Connection follows strict unrelated or unrelated as possible routing policy.
In some scenarios, the initial connection that there are two associated services is unsatisfactory for the feelings of strict unrelated routing policy
Condition, when control plane can be unsatisfactory for strict unrelated routing policy in the route for detecting two associated services, on user
Report one is unsatisfactory for the alarm of routing policy.User receives can be using the means adjustment associated services such as optimization order after the alarm
Route.After strict unrelated routing policy is met, control plane disappears report and alarm, and specific implementation is to associate
When the initial routing iinformation of business itself changes or when receiving the routing iinformation of associated processing business and updates, now two need to be checked
Whether bar associated services meet strict unrelated routing policy.
Wherein, the initial connection of two associated services may be caused to be unsatisfactory for the situation bag of strict unrelated routing policy
Include：
1st, two business of first secondary association, are unsatisfactory for routing policy, or two business are ordered with optimization at present, make it
Be optimized to same route etc. user some maloperations.
2nd, the recovery action of control plane triggering.When two associated services simultaneous faults, because different first nodes are recovered to keep away
The initial connection for the simply current associated services opened, may cause two to recover connection and (for the business without reply, recover connection
Be equal to work connection) between be unsatisfactory for routing policy.
Due under 1+1SNCP protection mechanisms, it is desirable to which operating path follows strict unrelated routing policy with Protection path.
So, after incidence relation is set up, an associated services need to follow certain when recover etc. action with associated business
Routing policy, to provide SNCP protections.In the first above-mentioned scene, because source node is identical, the routing iinformation of the first business can
Directly to be obtained by service identification；In second of scene, associated services routing iinformation is associated business in routing iinformation
Sended over during change by information interaction passage., may because the source node of two business is different under second of scene
There is associated routing iinformation not upgrade in time, cause two business not follow strict unrelated routing policy, now control
Plane safeguards that an associated services do not follow the alarm status of routing policy.
The method and device that SNCP is protected when ASON of the embodiment of the present invention is docked with legacy network, when only active (or place) section
When point is not in ASON domains, two business can be allowed when Article 2 business is set up, while first business of specified associations
Can have on same (or under) business time-slot, realize the concurrent excellent receipts of channel signal；When sourcesink node is not in ASON domains
When interior, user is taken to issue the method that association request is set to the source node of two business respectively, it is not necessary to two node interactions
Incidence relation can be set up to provide SNCP protections, while increasing an associated services does not follow routing policy alarm, point out to use
When family needs to adjust associated services route to provide complete SNCP protections.Therefore, the mutual pass that the present invention passes through foundation
Two business of connection so which domain no matter ASON networks be in, and can provide the function of being protected similar to 1+1 (path).
When failure occurs overseas in ASON, it can switch, Protection path is switched to from operating path.The two business can simultaneously
Recover attribute individually to have, when path failure occurs in ASON domains, control plane can be realized in ASON domains
Dynamic heavy-route, so as to improve the security of ASON networks.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize
Equivalent structure or the flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (9)
1. a kind of method that SNCP SNCP is protected when Automatic Switched Optical Network is docked with legacy network, its feature
It is, including：
Foundation is mutually related the first business and the second business；First business exists with the second business only source node or destination node
In the domain of ASON networks, or first business and the second business source node and destination node not in the domain of ASON networks
In；
According to first business that is mutually related SNCP protections are provided with the second business for ASON networks；Wherein,
When only source node or destination node are in the domain of ASON networks for first business and the second business, the foundation is mutually closed
The step of first business of connection is with the second business includes：
Set up unshielded first business；From with business time-slot in the first business identical, set up described second
Business, and specify and first business association；
It is described to set up phase when the source node and destination node of first business and the second business be not in the domain of ASON networks
The step of first business of mutual correlation is with the second business includes：
Two business are set up, respectively as the first business and the second business；
Associate Command is respectively sent to the source node of first, second business, by two business respectively in respective local information
The middle other side's service identification that preserves identifies for the associated services of itself；
Information interaction passage is created between the source node of first, second business, the association of two business is carried out；
After being successfully associated, the correlation protection relation of two business is set up, by described information exchange channels, described first,
Both routing iinformations are mutually sent out between second business.
2. according to the method described in claim 1, it is characterised in that described to set up the second business, and specified and first industry
The step of business association, includes：
The local information of the second business is set up, and preserves in the local information of the second business the associated services mark of second business
Know for first business；And the local information of first business is obtained, and in the local information of first business
The associated services for preserving first business are designated second business；
The routing iinformation of first business is taken out from the local information of first business, initiates to calculate road request；
When first business and the second business follow strict unrelated routing policy, second is completed according to calculation road request
The foundation of business；Otherwise, the second business sets up failure, the association preserved in the local message for cancelling first, second business
Relation.
3. method according to claim 2, it is characterised in that described according to the foundation bag for calculating road request the second business of completion
Include：
When the source node issues intersection request, concurrent excellent receipts relation is formed between first business and the second business.
4. method according to claim 2, it is characterised in that described to set up the second business, and specify and first industry
The step of business association, further comprises：When first business and the second business do not follow strict unrelated routing policy, to
User's prompt alarm information.
5. according to the method described in claim 1, it is characterised in that the type of service of first business and the second business includes
At least one of：1+1SNCP business, information intelligent platform MSP business or unprotect business.
6. method according to claim 1 or 5, it is characterised in that also include：Safeguard the road of first, second business
By information.
The device that SNCP is protected when 7. a kind of ASON is docked with legacy network, it is characterised in that including：
Module is set up in association, for setting up first business that is mutually related and the second business；First business and the second business
Only source node or destination node is in the domain of ASON networks, or the source node and destination node of first business and the second business are equal
Not in the domain of ASON networks；
Protection module, SNCP protections are provided for first business that is mutually related according to the second business for ASON networks；
Wherein, module is set up in the association includes：
First sets up unit, for setting up unshielded first business；
Second sets up unit, for selection and business time-slot in the first business identical, sets up second business, and refer to
Fixed and first business association；
3rd sets up unit, for setting up two business, respectively as the first business and the second business；
Transmitting element, the source node for Associate Command to be respectively sent to first, second business, by two business respectively each
From local information in preserve other side service identification and identified for the associated services of itself；
Passage creating unit, for creating information interaction passage between the source node of first, second business, carries out two industry
The association of business；
4th sets up unit, the correlation protection relation for after being successfully associated, setting up two business, is interacted by described information
Passage, mutually sends out both routing iinformations between first, second business.
8. device according to claim 7, it is characterised in that described second, which sets up unit, includes：
Service identification subelement, the local information for setting up the second business, and preservation should in the local information of the second business
The associated services of second business are designated first business；And the local information of first business is obtained, and described
The associated services that first business is preserved in the local information of first business are designated second business；
Way unit is calculated, the routing iinformation for taking out first business from the local information of first business is initiated
Calculate road request；
Subelement is set up, for when first business and the second business follow strict unrelated routing policy, according to described
Calculate the foundation that road request completes the second business；Otherwise, the second business sets up failure, cancels the local of first, second business
The incidence relation preserved in message.
9. device according to claim 8, it is characterised in that the subelement of setting up is additionally operable to issue in the source node
When intersecting request, concurrent excellent receipts relation is formed between first business and the second business；And when first business with
When second business does not follow strict unrelated routing policy, warning information is prompted the user with.
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| EP1351452A1 (en) * | 2002-04-02 | 2003-10-08 | BRITISH TELECOMMUNICATIONS public limited company | Network capacity management system |
| CN101170494A (en) * | 2007-11-21 | 2008-04-30 | 中兴通讯股份有限公司 | Soft rerouting method in automatic switching optical network |
| CN101394313A (en) * | 2007-09-18 | 2009-03-25 | 华为技术有限公司 | Service state monitoring method for peer-to-peer network nodes |
| CN101547382A (en) * | 2009-05-06 | 2009-09-30 | 烽火通信科技股份有限公司 | Separation method for active-Standby service resource of different source and sink for grid network |
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|---|---|---|---|---|
| EP1351452A1 (en) * | 2002-04-02 | 2003-10-08 | BRITISH TELECOMMUNICATIONS public limited company | Network capacity management system |
| CN101394313A (en) * | 2007-09-18 | 2009-03-25 | 华为技术有限公司 | Service state monitoring method for peer-to-peer network nodes |
| CN101170494A (en) * | 2007-11-21 | 2008-04-30 | 中兴通讯股份有限公司 | Soft rerouting method in automatic switching optical network |
| CN101547382A (en) * | 2009-05-06 | 2009-09-30 | 烽火通信科技股份有限公司 | Separation method for active-Standby service resource of different source and sink for grid network |
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