CN102843618A - Method and device for SNCP (Sub-network Connection Protection) in butt joint of ASON (Automatically Switched Optical Network) and traditional network - Google Patents
Method and device for SNCP (Sub-network Connection Protection) in butt joint of ASON (Automatically Switched Optical Network) and traditional network Download PDFInfo
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Abstract
The invention relates to a method and a device for SNCP (Sub-network Connection Protection) in butt joint of an ASON (Automatically Switched Optical Network) and a traditional network. The method comprises the steps of: building first business and second business in association, wherein source nodes or host nodes in the first business and the second business are in the domain of the ASON, or the source nodes and host nodes of the first business and the second business are not in the domain of the ASON; and providing the SNCP to the ASON according to the first business and the second business in association. According to the invention, no matter in which domain the ASON is, the function similar to 1+1 (path) protection can be provided through building the first business and the second business in association. Meanwhile, the first business and the second business can have a restore attribute independently, and dynamic rerouting of a control plane can be achieved in the ASON domain when a path fault appears in the ASON domain, so as to improve the security of the ASON.
Description
Technical field
The present invention relates to the ASON field; Relate in particular to based on SDH (Synchronous Digital Hierarchy; SDH) a kind of ASON (Automatically Switched Optical Network; The method and the device of SNCP when ASON) docking (Subnetwork Connection Protection, SNCP) protection with legacy network.
Background technology
Usually, the survivability of network is meant that network still can continue the ability of normal operation when breaking down.Transmit the availability of netting in order to strengthen, and the integrality of keeping existing call, the ASON network need adopt certain protection and Restoration Mechanism.
The recovery of ASON network is meant that reappearing routing through the idle capacity that uses network substitutes the connection of breaking down.Mode based on the recovery of control plane mainly is dynamic heavy-route, after fault takes place, utilize signaling real-time set up restoration path.
The protection mechanism of ASON network support can be divided into two types: based on the protection that transmits the plane with based on the protection of control plane.Wherein, occur between the source node and destination node of control plane protected field, accomplish the operation of protection mechanism through the coordination between source node and the destination node based on the protection of control plane.Based on using 1+1 end-to-end (path) protection more generally in the protection of control plane.
And in actual networking, the situation that the ASON network docks with legacy network possibly appear, also need provide the 1+1 trail protection this moment.Shown in Fig. 1 a, territory A is the ASON territory, and territory B is traditional SDH/MSTP network, has only source node in the ASON territory; Perhaps; Shown in Fig. 1 b; When territory A and territory C are traditional SDH (Synchronous Digital Hierarchy; The synchronous digital transmission system)/and MSTP (Multi-Service Transfer Platform, multi-service transport platform) network, when territory B is the ASON network, professional source, destination node be not all in ASON network (territory B); When territory B is traditional SDH/MSTP network and territory A or territory C when being the ASON network, only active (or place) node is in the ASON territory.Existing solution can't realize the ASON network and the 1+1 protection of tradition when docking under above-mentioned two kinds of scenes simultaneously, thereby has reduced the fail safe of ASON network.
Summary of the invention
The method and the device of SNCP protection when main purpose of the present invention is to provide a kind of ASON to dock with legacy network, the fail safe that is intended to improve the ASON network.
In order to achieve the above object, the method for SNCP protection when docking with legacy network that the present invention proposes a kind of ASON comprises:
Foundation first professional and second business that be mutually related; Only source node or destination node are in the territory of ASON network for said first professional and second business, and perhaps said first professional and the second professional source node and destination node be not all in the territory of ASON network;
For the ASON network SNCP is provided protection with second business according to said first business that is mutually related.
Preferably, when said first professional and second business when only source node or destination node are in the territory of ASON network, said foundation is mutually related and first professionally comprises with the second professional step:
Set up unshielded said first business;
Select for use and the said first professional identical last business time-slot, set up said second business, and appointment and said first business association.
Preferably, saidly set up second business, and the step of appointment and said first business association comprises:
Set up the local information of second business, and this second professional associated services of preservation is designated said first business in the local information of second business; And the local information of obtaining said first business, and this first professional associated services of preservation is designated said second business in the local information of said first business;
From the local information of said first business, take out the routing iinformation of said first business, initiate to calculate the road request;
When said first professional and second business followed strict irrelevant routing policy, accomplish the second professional foundation according to the request of said calculation road; Otherwise second professional the foundation failed, and cancels the incidence relation of preserving in said first, second professional local message.
Preferably, said foundation based on calculation road request completion second business comprises:
When said source node issues the intersection request, between said first business and second business, form concurrent excellent receipts relation.
Preferably, saidly set up second business, and the step of appointment and said first business association comprises further: when said first professional and second business do not followed strict irrelevant routing policy, to the user prompt warning information.
Preferably, when said first professional and the second professional source node and destination node were all not in the territory of ASON network, said foundation was mutually related and first professionally comprises with the second professional step:
Set up two business, respectively professional and second business as first;
Associate Command is sent to first, second professional source node respectively, in local information separately, preserves the associated services sign that the other side's service identification is self respectively by two business;
Between said first, second professional source node, create information interaction passage, carry out the association of two business;
After the association success, set up the correlation protection relation of two business, through said information interaction passage, between said first, second business, send out both routing iinformations mutually.
Preferably, said first professional and the second professional type of service comprise following one of at least: the 1+1SNCP business, MSP is professional or unprotect is professional.
Preferably, also comprise: safeguard said first, second professional routing iinformation.
The device of SNCP protection when docking with legacy network that the present invention also proposes a kind of ASON comprises:
Module is set up in association, is used for setting up first professional and second business that is mutually related; Only source node or destination node are in the territory of ASON network for said first professional and second business, and perhaps said first professional and the second professional source node and destination node be not all in the territory of ASON network;
Protection module is used for for the ASON network SNCP being provided protection with second business according to said first business that is mutually related.
Preferably, said association is set up module and is comprised:
First sets up the unit, is used to set up unshielded said first business;
Second sets up the unit, is used to select for use and the said first professional identical last business time-slot, sets up said second business, and appointment and said first business association.
Preferably, said second set up the unit and comprise:
The service identification subelement is used to set up the second professional local information, and in the second professional local information, preserves this second professional associated services and be designated said first business; And the local information of obtaining said first business, and this first professional associated services of preservation is designated said second business in the local information of said first business;
Calculate the way unit, be used for taking out the routing iinformation of said first business, initiate to calculate the road request from the said first professional local information;
Set up subelement, be used for when said first professional and second business followed strict irrelevant routing policy, accomplish the second professional foundation according to the request of said calculation road; Otherwise second professional the foundation failed, and cancels the incidence relation of preserving in said first, second professional local message.
Preferably, the said subelement of setting up also is used for when said source node issues the intersection request, between said first business and second business, forms concurrent excellent receipts relation; And when said first professional and second business do not followed strict irrelevant routing policy, to the user prompt warning information.
Preferably, said association is set up module and is comprised:
The 3rd sets up the unit, is used to set up two business, respectively professional and second business as first;
Transmitting element is used for Associate Command is sent to first, second professional source node respectively, in local information separately, preserves the associated services sign that the other side's service identification is self respectively by two business;
Passage is created the unit, is used between said first, second professional source node, creating information interaction passage, carries out the association of two business;
The 4th sets up the unit, is used for after related success, sets up the correlation protection relation of two business, through said information interaction passage, between said first, second business, sends out both routing iinformations mutually.
The method and the device of SNCP protection when a kind of ASON that the present invention proposes docks with legacy network; When only active (or place) node is not in the ASON territory; Can be when setting up the second business; Specified associations article one is professional simultaneously, lets two business can have same going up (or down) business time-slot, realizes the concurrent excellent receipts of channel signal; When the sourcesink node is all not in the ASON territory; Take the user respectively the source node of two business to be issued the method that association request is set; Do not need two nodes can set up incidence relation alternately SNCP is provided protection; Increase an associated services simultaneously and do not follow the routing policy alarm, when the prompting user need adjust the associated services route so that complete SNCP protection to be provided.Therefore, be mutually related two business of the present invention through setting up make which territory no matter the ASON network be in, and the function that is similar to 1+1 (path) protection can be provided.When fault occurs in ASON when overseas, can switch, be switched to the protection path from operating path.Simultaneously these two business can be independent has the recovery attribute, in the time of in path failure occurs in the ASON territory, can in the ASON territory, realize the dynamic heavy-route of control plane, thus the fail safe that has improved the ASON network.
Description of drawings
Fig. 1 a is the first kind scene sketch map of ASON of the present invention when docking with legacy network;
Fig. 1 b is the second kind scene sketch map of ASON of the present invention when docking with legacy network;
Fig. 2 is the method one embodiment schematic flow sheet of ASON of the present invention SNCP protection when docking with legacy network;
Fig. 3 sets up first professional and the second professional schematic flow sheet that be mutually related under first kind of scene among method one embodiment of ASON of the present invention SNCP protection when docking with legacy network;
Fig. 4 sets up second business under first kind of scene among method one embodiment of ASON of the present invention SNCP protection when docking with legacy network, and specifies and the schematic flow sheet of first business association;
Fig. 5 sets up first professional and the second professional schematic flow sheet that be mutually related under second kind of scene among method one embodiment of ASON of the present invention SNCP protection when docking with legacy network;
Fig. 6 is the device one example structure sketch map of ASON of the present invention SNCP protection when docking with legacy network;
Fig. 7 is the related modular structure sketch map of setting up of first kind of execution mode among device one embodiment of ASON of the present invention SNCP protection when docking with legacy network;
Fig. 8 be among device one embodiment of ASON of the present invention SNCP protection when docking with legacy network first kind of execution mode second set up the unit structural representation;
Fig. 9 is the related modular structure sketch map of setting up of second kind of execution mode among device one embodiment of ASON of the present invention SNCP protection when docking with legacy network.
In order to make technical scheme of the present invention clearer, clear, will combine accompanying drawing to do further to detail below.
Embodiment
Embodiment of the invention solution mainly is: two business that are mutually related through setting up, make which territory no matter the ASON network be in, and the function that is similar to 1+1 (path) protection can be provided.Simultaneously two business can be independent has the recovery attribute, in the time of in path failure occurs in the ASON territory, can in the ASON territory, realize the dynamic heavy-route of control plane, the fail safe of raising ASON network.
As shown in Figure 2, the method for SNCP protection when docking with legacy network that one embodiment of the invention proposes a kind of ASON comprises:
Step S101 sets up first professional and second business that is mutually related;
Wherein, only source node or destination node are in the territory of ASON network for first professional and second business, and perhaps first professional and the second professional source node and destination node be not all in the territory of ASON network.
Step S102, first business provides SNCP protection with second business for the ASON network according to being mutually related.
For realize professional source, destination node all not in the territory of ASON network and source, destination node one of them in the territory of ASON network under two kinds of scenes; SNCP protection when the ASON network docks with legacy network, present embodiment need be set up first professional and second business that is mutually related; First business provides SNCP protection with second business for the ASON network based on being mutually related.
At first set up article one business (being alleged first business of present embodiment); When only active (or place) node is not in the territory of ASON network; When setting up second business (being alleged second business of present embodiment); Specified associations article one is professional simultaneously; Allow two business can have same going up (or down) business time-slot, realize the concurrent excellent receipts of channel signal; When the sourcesink node is all not in the territory of ASON network, take the user respectively the source node of two business to be issued the method that association request is set, not needing two nodes can set up incidence relation alternately provides SNCP protection.
Particularly, as shown in Figure 3, when first professional and second business when only source node or destination node are in the territory of ASON network, among the above-mentioned steps S101, setting up is mutually related first professionally comprises with the second professional step:
Step S1011 sets up unshielded first business;
Step S1012 selects for use and the first professional identical last business time-slot, sets up second business, and specifies and first business association.
As shown in Figure 4, set up second business among the step S1012, and the step of the appointment and first business association comprises:
Step S10121 sets up the second professional local information, and in the second professional local information, preserves this second professional associated services and be designated first business; And the local information of obtaining first business, and this first professional associated services of preservation is designated second business in the local information of first business;
Step S10122 takes out the routing iinformation of first business from the local information of first business, initiate to calculate the road request;
Step S10123 judges whether first business and second business follow strict irrelevant routing policy, if then get into step S10124; Otherwise, get into step S10125;
Step S10124 accomplishes the foundation of second business according to calculating the road request;
Step S10125, second professional the foundation failed, and cancels the incidence relation of preserving in first, second professional local message, and to the user prompt warning information.
Wherein, comprise according to calculating the road request completion second professional foundation:
When said source node issues the intersection request, between first business and second business, form concurrent excellent receipts relation.
With only have source node not the scene in the territory (hereinafter to be referred as the ASON territory) of ASON network be example, the process that two business are set up incidence relation is:
At first, set up a unprotect business as first business, its route is A-B, and it sets up process with the professional foundation of common ASON;
Then, set up the second business,, select for use the first professional same upward business time-slot to concern, and specify the first professional associated services, accomplish second business and first business association for this second business with the concurrent excellent receipts that constitute channel signal as second business.
Wherein, when setting up the second business, at first set up the local information of second business, preserve this second professional associated services and be designated first business, find the local information of first business simultaneously, the associated services of preserving first business is designated second business; Take out the route A-B of first business then, initiate to calculate the road request, require the route of second business and the route A-B of first business to follow the irrelevant routing policy of strictness (comprising that node is irrelevant, link has nothing to do, SRLG has nothing to do); Because of two service source nodes are identical, the first professional routing iinformation can directly obtain through its associated services sign.
Then, carry out normal business through RSVP (RSVP) signaling and set up process, wherein when source node issues intersection, require the first concurrent excellent receipts that intersect to form professional and second business to concern; If second professional the foundation failed, then need remove the associated services sign of first business, and inform the related failure of user; If second professional the foundation successfully, promptly related success.
For the destination node scene in the ASON territory not, it realizes that affiliated party's case is the same, only needs destination node as source node, oppositely sets up professional getting final product.
As shown in Figure 5, when first professional and the second professional source node and destination node were all not in the ASON territory, setting up among the above-mentioned steps S101 is mutually related first professionally comprised with the second professional step:
Step S1013 sets up two business, respectively professional and second business as first;
Step S1014 is sent to first, second professional source node respectively with Associate Command, in local information separately, preserves the associated services sign that the other side's service identification is self respectively by two business;
Step S1015 creates information interaction passage between first, second professional source node, carry out the association of two business;
Step S1016 after the association success, sets up the correlation protection relation of two business, through information interaction passage, between first, second business, sends out both routing iinformations mutually.
Wherein, first type of service professional and second business can be for 1+1SNCP is professional, MSP is professional or unprotect is professional.
To the equal scene in the ASON territory not of source, destination node; At first set up two business; Type of service can be 1+1SNCP business, the professional perhaps unprotect business of MSP (Message Smart Platform, information intelligent platform) etc., to not restriction of type of service.But need to guarantee the cascade, single-direction and dual-direction of two business, parameter such as tunnel is consistent, so that one professionally can provide protection to an other business.
Then, two business are carried out association.
Below describe two business and set up the process of incidence relation:
1, to two sending down service Associate Commands, professional Associate Command need send to the first node (being source node) of two business simultaneously;
2, after two business are received Associate Command, preserve the associated services sign of the other side's service identification respectively for oneself.Particularly, associated services is taken out the sign of another associated business from Associate Command, is kept in the local information of this associated services, and is saved in the database, so that node can regain the associated services sign when restarting.Keeping strokes of two business of this process, and carry out respectively.
3, whether there is the passage of information interaction between two business of inspection, if there is no, then creates information interaction passage.What present embodiment was selected for use is to serve as the passage of information interaction through the VIPCC (virtual control channel) that LMP (link association agreement) creates, and uses VIPCC to send OEM (private data) and carries out information interaction.The concrete process of creating VIPCC can adopt the existing mature technology scheme, is not described further at this.Need explanation to be, and the passage that carries out information interaction required for the present invention is not limited to use VIPCC.
4, after the related success, two business are set up the correlation protection relation, and send the routing iinformation of self mutually.Article two, the business of being mutually related is taken out the initial routing iinformation of self from local information, for initial routing iinformation, include only the work that the professional work of unprotect and MSP is connected, 1+1SNCP is professional and be connected with protection.Then, be assembled into private data sends to associated business through VIPCC first node by certain form.Simultaneously, associated services also can be received the data that associated business sends over, and becomes the routing iinformation of associated business by the format analysis that defines, and is kept in the local information of this associated services.In order to reduce the operation of database, routing iinformation is warehousing not.Node is restarted or power-down conditions if meet, and only needs after restarting, to send routing iinformation once more and gets final product.
In the present embodiment; Also need safeguard the routing iinformation of associated services; Because professional initial routing iinformation is not constant always; And the possibility that has the channel failure of information interaction, so under certain scene, associated services need be notified the associated professional routing iinformation that upgrades oneself.
Particularly, when the initial routing iinformation of associated services changes because of certain maintenance behavior, need routing iinformation to the first node transmission oneself of associated business.The maintenance behavior includes but not limited to that the business of service optimization, no reply-attribute is recovered, will recover to connect and is revised as initial connection etc.
When node was restarted, associated services was recovered this professional local information from database, if there is associated business, then sent the routing iinformation of oneself to the first node of associated business.
When the state of the passage that detects information interaction changes; From losing efficacy to effective the time; Because following period of time at the channel failure of information interaction; Change possibly take place in the routing iinformation of associated services self, so also need send the routing iinformation of oneself to the first node of associated business this moment.
Because the purpose of two business association is for 1+1SNCP is provided protection, aspect routing policy, must be strict irrelevant between two associated business, this strategy is only to professional current initial connection.That is to say, connect for the recovery that optimize to connect or is not taken back the business of multiple attribute, need with current initial connection of associated business follow strict irrelevant routing policy; If take back the business of multiple attribute, it recovers, and connection can be selected and current initial connection of associated business followed strict routing policy irrelevant or that have nothing to do as possible.
Under some scene; The situation of the strict routing policy that has nothing to do is not satisfied in the initial connection of two associated services of existence; Control plane can be when the routing policy that the satisfied strictness of the route that detects two associated services has nothing to do, to alarm of not satisfying routing policy of reporting of user.The user can utilize means such as optimizing order to adjust the route of associated services after receiving this alarm.After satisfying strict irrelevant routing policy; Control plane disappears report and alarm; Concrete implementation does; When perhaps receiving the routing iinformation of associated professional renewal when the initial routing iinformation of associated services self changes, need to check whether two associated services satisfy the irrelevant routing policy of strictness at this moment.
The situation that strict irrelevant routing policy is not satisfied in the initial connection that wherein, possibly cause two associated services comprises:
1, first two related business do not satisfy routing policy, perhaps two business are ordered with optimizing at present, make them be optimized to some misoperation of same user such as route.
2, the recovery action of control plane triggering.When two associated services simultaneous faultss, be the initial connection of current associated services because different first nodes recover to avoid, possibly cause two and recover to connect not satisfying routing policy between (for there being the business of replying, recover to connect be equal to work connect).
Owing under the 1+1SNCP protection mechanism, require operating path and protection path to follow strict irrelevant routing policy.So after setting up incidence relation, an associated services needs to follow certain routing policy with associated business when recovering to wait action, so that SNCP to be provided protection.In above-mentioned first kind of scene, because of source node is identical, the first professional routing iinformation can directly obtain through service identification; In second kind of scene, the associated services routing iinformation is that associated business sends over through information interaction passage when routing iinformation changes.Under this second kind of scene; Source node difference because of two business; Associated routing iinformation possibly occur and not upgrade in time, cause two business not follow strict irrelevant routing policy, associated services of control plane maintenance this moment is not followed the alarm status of routing policy.
In sum, present embodiment can provide the function that is similar to 1+1 (path) protection no matter which territory the ASON network is in.When fault occurs in ASON when overseas, can switch, be switched to the protection path from operating path.Simultaneously these two business can be independent has the recovery attribute, in the time of in path failure occurs in the ASON territory, can in the ASON territory, realize the dynamic heavy-route of control plane.
As shown in Figure 6, the device of SNCP protection when docking that one embodiment of the invention proposes a kind of ASON with legacy network, comprising: module 601 and protection module 602 are set up in association; Wherein:
For realize professional source, destination node all not in the territory of ASON network and source, destination node one of them in the territory of ASON network under two kinds of scenes; SNCP protection when the ASON network docks with legacy network, present embodiment need be set up first professional and second business that is mutually related; First business provides SNCP protection with second business for the ASON network based on being mutually related.
At first set up article one business (being alleged first business of present embodiment); When only active (or place) node is not in the territory of ASON network; When setting up second business (being alleged second business of present embodiment); Specified associations article one is professional simultaneously; Allow two business can have same going up (or down) business time-slot, realize the concurrent excellent receipts of channel signal; When the sourcesink node is all not in the territory of ASON network, take the user respectively the source node of two business to be issued the method that association request is set, not needing two nodes can set up incidence relation alternately provides SNCP protection.
Particularly, as shown in Figure 7, as first kind of execution mode, when first professional and second business when only source node or destination node are in the territory of ASON network, association is set up module 601 and comprised: first sets up unit 6011 and second sets up unit 6012, wherein:
First sets up unit 6011, is used to set up unshielded first business;
Second sets up unit 6012, is used to select for use and the first professional identical last business time-slot, sets up second business, and specifies and first business association.
As shown in Figure 8, second sets up unit 6012 comprises: service identification subelement 60121, calculate way unit 60122 and set up subelement 60123, wherein:
Calculate way unit 60122, be used for taking out the routing iinformation of first business, initiate to calculate the road request from the first professional local information;
Set up subelement 60123, be used for when first professional and second business followed strict irrelevant routing policy, accomplish the second professional foundation according to calculating the road request; Otherwise second professional the foundation failed, and cancels the incidence relation of preserving in said first, second professional local message.
Further, set up subelement 60123 and also be used for when source node issues the intersection request, between first business and second business, form concurrent excellent receipts relation; And when first professional and second business do not followed strict irrelevant routing policy, to the user prompt warning information.
In this execution mode, with only have source node not the scene in the territory (hereinafter to be referred as the ASON territory) of ASON network be example, the process that two business are set up incidence relation is:
At first, set up a unprotect business as first business, its route is A-B, and it sets up process with the professional foundation of common ASON;
Then, set up the second business,, select for use the first professional same upward business time-slot to concern, and specify the first professional associated services, accomplish second business and first business association for this second business with the concurrent excellent receipts that constitute channel signal as second business.
Wherein, when setting up the second business, at first set up the local information of second business, preserve this second professional associated services and be designated first business, find the local information of first business simultaneously, the associated services of preserving first business is designated second business; Take out the route A-B of first business then, initiate to calculate the road request, require the route of second business and the route A-B of first business to follow the irrelevant routing policy of strictness (comprising that node is irrelevant, link has nothing to do, SRLG has nothing to do); Because of two service source nodes are identical, the first professional routing iinformation can directly obtain through its associated services sign.
Then, carry out normal business through the RSVP signaling and set up process, wherein when source node issues intersection, require the first concurrent excellent receipts that intersect to form professional and second business to concern; If second professional the foundation failed, then need remove the associated services sign of first business, and inform the related failure of user; If second professional the foundation successfully, promptly related success.
For the destination node scene in the ASON territory not, it realizes that affiliated party's case is the same, only needs destination node as source node, oppositely sets up professional getting final product.
As shown in Figure 9; As second kind of execution mode; When first professional and the second professional source node and destination node were all not in the ASON territory, association was set up module 601 and comprised: the 3rd sets up unit 6013, transmitting element 6014, passage creates unit 6015 and the 4th and sets up unit 6016, wherein:
The 3rd sets up unit 6013, is used to set up two business, respectively professional and second business as first;
Transmitting element 6014 is used for Associate Command is sent to first, second professional first node respectively, in local information separately, preserves the associated services sign that the other side's service identification is self respectively by two business;
The 4th sets up unit 6016, is used for after related success, sets up the correlation protection relation of two business, through information interaction passage, between first, second business, sends out both routing iinformations mutually.
To the equal scene in the ASON territory not of source, destination node, at first set up two business, type of service can be that 1+1SNCP is professional, MSP is professional or unprotect business etc., and type of service is not limited.But need to guarantee the cascade, single-direction and dual-direction of two business, parameter such as tunnel is consistent, so that one professionally can provide protection to an other business.
Then, two business are carried out association.
Below describe two business and set up the process of incidence relation:
1, to two sending down service Associate Commands, professional Associate Command need send to the first node (being source node) of two business simultaneously;
2, after two business are received Associate Command, preserve the associated services sign of the other side's service identification respectively for oneself.Particularly, associated services is taken out the sign of another associated business from Associate Command, is kept in the local information of this associated services, and is saved in the database, so that node can regain the associated services sign when restarting.Keeping strokes of two business of this process, and carry out respectively.
3, whether there is the passage of information interaction between two business of inspection, if there is no, then creates information interaction passage.What present embodiment was selected for use is to serve as the passage of information interaction through the VIPCC (virtual control channel) that LMP (link association agreement) creates, and uses VIPCC to send OEM (private data) and carries out information interaction.The concrete process of creating VIPCC can adopt the existing mature technology scheme, is not described further at this.Need explanation to be, and the passage that carries out information interaction required for the present invention is not limited to use VIPCC.
4, after the related success, two business are set up the correlation protection relation, and send the routing iinformation of self mutually.Article two, the business of being mutually related is taken out the initial routing iinformation of self from local information, for initial routing iinformation, include only the work that the professional work of unprotect and MSP is connected, 1+1SNCP is professional and be connected with protection.Then, be assembled into private data sends to associated business through VIPCC first node by certain form.Simultaneously, associated services also can be received the data that associated business sends over, and becomes the routing iinformation of associated business by the format analysis that defines, and is kept in the local information of this associated services.In order to reduce the operation of database, routing iinformation is warehousing not.Node is restarted or power-down conditions if meet, and only needs after restarting, to send routing iinformation once more and gets final product.
In the present embodiment; Also need safeguard the routing iinformation of associated services; Because professional initial routing iinformation is not constant always; And the possibility that has the channel failure of information interaction, so under certain scene, associated services need be notified the associated professional routing iinformation that upgrades oneself.
Particularly, when the initial routing iinformation of associated services changes because of certain maintenance behavior, need routing iinformation to the first node transmission oneself of associated business.The maintenance behavior includes but not limited to that the business of service optimization, no reply-attribute is recovered, will recover to connect and is revised as initial connection etc.
When node was restarted, associated services was recovered this professional local information from database, if there is associated business, then sent the routing iinformation of oneself to the first node of associated business.
When the state of the passage that detects information interaction changes; From losing efficacy to effective the time; Because following period of time at the channel failure of information interaction; Change possibly take place in the routing iinformation of associated services self, so also need send the routing iinformation of oneself to the first node of associated business this moment.
Because the purpose of two business association is for 1+1SNCP is provided protection, aspect routing policy, must be strict irrelevant between two associated business, this strategy is only to professional current initial connection.That is to say, connect for the recovery that optimize to connect or is not taken back the business of multiple attribute, need with current initial connection of associated business follow strict irrelevant routing policy; If take back the business of multiple attribute, it recovers, and connection can be selected and current initial connection of associated business followed strict routing policy irrelevant or that have nothing to do as possible.
Under some scene; The situation of the strict routing policy that has nothing to do is not satisfied in the initial connection of two associated services of existence; Control plane can be when the routing policy that the satisfied strictness of the route that detects two associated services has nothing to do, to alarm of not satisfying routing policy of reporting of user.The user can utilize means such as optimizing order to adjust the route of associated services after receiving this alarm.After satisfying strict irrelevant routing policy; Control plane disappears report and alarm; Concrete implementation does; When perhaps receiving the routing iinformation of associated professional renewal when the initial routing iinformation of associated services self changes, need to check whether two associated services satisfy the irrelevant routing policy of strictness at this moment.
The situation that strict irrelevant routing policy is not satisfied in the initial connection that wherein, possibly cause two associated services comprises:
1, first two related business do not satisfy routing policy, perhaps two business are ordered with optimizing at present, make them be optimized to some misoperation of same user such as route.
2, the recovery action of control plane triggering.When two associated services simultaneous faultss, be the initial connection of current associated services because different first nodes recover to avoid, possibly cause two and recover to connect not satisfying routing policy between (for there being the business of replying, recover to connect be equal to work connect).
Owing under the 1+1SNCP protection mechanism, require operating path and protection path to follow strict irrelevant routing policy.So after setting up incidence relation, an associated services needs to follow certain routing policy with associated business when recovering to wait action, so that SNCP to be provided protection.In above-mentioned first kind of scene, because of source node is identical, the first professional routing iinformation can directly obtain through service identification; In second kind of scene, the associated services routing iinformation is that associated business sends over through information interaction passage when routing iinformation changes.Under this second kind of scene; Source node difference because of two business; Associated routing iinformation possibly occur and not upgrade in time, cause two business not follow strict irrelevant routing policy, associated services of control plane maintenance this moment is not followed the alarm status of routing policy.
The method and the device of SNCP protection when embodiment of the invention ASON docks with legacy network; When only active (or place) node is not in the ASON territory; Can be when setting up the second business; Specified associations article one is professional simultaneously, lets two business can have same going up (or down) business time-slot, realizes the concurrent excellent receipts of channel signal; When the sourcesink node is all not in the ASON territory; Take the user respectively the source node of two business to be issued the method that association request is set; Do not need two nodes can set up incidence relation alternately SNCP is provided protection; Increase an associated services simultaneously and do not follow the routing policy alarm, when the prompting user need adjust the associated services route so that complete SNCP protection to be provided.Therefore, be mutually related two business of the present invention through setting up make which territory no matter the ASON network be in, and the function that is similar to 1+1 (path) protection can be provided.When fault occurs in ASON when overseas, can switch, be switched to the protection path from operating path.Simultaneously these two business can be independent has the recovery attribute, in the time of in path failure occurs in the ASON territory, can in the ASON territory, realize the dynamic heavy-route of control plane, thus the fail safe that has improved the ASON network.
The above is merely the preferred embodiments of the present invention; Be not so limit claim of the present invention; Every equivalent structure or flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical field, all in like manner be included in the scope of patent protection of the present invention.
Claims (13)
1. the method for SNCP SNCP protection is characterized in that when an ASON ASON docked with legacy network, comprising:
Foundation first professional and second business that be mutually related; Only source node or destination node are in the territory of ASON network for said first professional and second business, and perhaps said first professional and the second professional source node and destination node be not all in the territory of ASON network;
For the ASON network SNCP is provided protection with second business according to said first business that is mutually related.
2. method according to claim 1 is characterized in that, when said first professional and second business when only source node or destination node are in the territory of ASON network, said foundation is mutually related and first professionally comprises with the second professional step:
Set up unshielded said first business;
Select for use and the said first professional identical last business time-slot, set up said second business, and appointment and said first business association.
3. method according to claim 2 is characterized in that, saidly sets up second business, and the step of appointment and said first business association comprises:
Set up the local information of second business, and this second professional associated services of preservation is designated said first business in the local information of second business; And the local information of obtaining said first business, and this first professional associated services of preservation is designated said second business in the local information of said first business;
From the local information of said first business, take out the routing iinformation of said first business, initiate to calculate the road request;
When said first professional and second business followed strict irrelevant routing policy, accomplish the second professional foundation according to the request of said calculation road; Otherwise second professional the foundation failed, and cancels the incidence relation of preserving in said first, second professional local message.
4. method according to claim 3 is characterized in that, said foundation according to calculation road request completion second business comprises:
When said source node issues the intersection request, between said first business and second business, form concurrent excellent receipts relation.
5. method according to claim 3; It is characterized in that; Saidly set up second business, and the step of appointment and said first business association comprises further: when said first professional and second business do not followed strict irrelevant routing policy, to the user prompt warning information.
6. method according to claim 1 is characterized in that, when said first professional and the second professional source node and destination node were all not in the territory of ASON network, said foundation was mutually related and first professionally comprises with the second professional step:
Set up two business, respectively professional and second business as first;
Associate Command is sent to first, second professional source node respectively, in local information separately, preserves the associated services sign that the other side's service identification is self respectively by two business;
Between said first, second professional source node, create information interaction passage, carry out the association of two business;
After the association success, set up the correlation protection relation of two business, through said information interaction passage, between said first, second business, send out both routing iinformations mutually.
7. method according to claim 6 is characterized in that, said first professional and the second professional type of service comprise following one of at least: 1+1SNCP is professional, information intelligent platform MSP business or unprotect business.
8. according to claim 6 or 7 described methods, it is characterized in that, also comprise: safeguard said first, second professional routing iinformation.
9. the device of SNCP protection is characterized in that when an ASON docked with legacy network, comprising:
Module is set up in association, is used for setting up first professional and second business that is mutually related; Only source node or destination node are in the territory of ASON network for said first professional and second business, and perhaps said first professional and the second professional source node and destination node be not all in the territory of ASON network;
Protection module is used for for the ASON network SNCP being provided protection with second business according to said first business that is mutually related.
10. device according to claim 9 is characterized in that, said association is set up module and comprised:
First sets up the unit, is used to set up unshielded said first business;
Second sets up the unit, is used to select for use and the said first professional identical last business time-slot, sets up said second business, and appointment and said first business association.
11. device according to claim 10 is characterized in that, said second sets up the unit comprises:
The service identification subelement is used to set up the second professional local information, and in the second professional local information, preserves this second professional associated services and be designated said first business; And the local information of obtaining said first business, and this first professional associated services of preservation is designated said second business in the local information of said first business;
Calculate the way unit, be used for taking out the routing iinformation of said first business, initiate to calculate the road request from the said first professional local information;
Set up subelement, be used for when said first professional and second business followed strict irrelevant routing policy, accomplish the second professional foundation according to the request of said calculation road; Otherwise second professional the foundation failed, and cancels the incidence relation of preserving in said first, second professional local message.
12., it is characterized in that the said subelement of setting up also is used for when said source node issues the intersection request, between said first business and second business, forms concurrent excellent receipts relation based on the described device of claim 11; And when said first professional and second business do not followed strict irrelevant routing policy, to the user prompt warning information.
13. device according to claim 9 is characterized in that, said association is set up module and is comprised:
The 3rd sets up the unit, is used to set up two business, respectively professional and second business as first;
Transmitting element is used for Associate Command is sent to first, second professional source node respectively, in local information separately, preserves the associated services sign that the other side's service identification is self respectively by two business;
Passage is created the unit, is used between said first, second professional source node, creating information interaction passage, carries out the association of two business;
The 4th sets up the unit, is used for after related success, sets up the correlation protection relation of two business, through said information interaction passage, between said first, second business, sends out both routing iinformations mutually.
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