CN103580884A - Protection configuration method, protection configuration system, transmitting-end equipment and receiving-end equipment - Google Patents
Protection configuration method, protection configuration system, transmitting-end equipment and receiving-end equipment Download PDFInfo
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Abstract
The invention discloses a protection configuration method, a protection configuration system, transmitting-end equipment and receiving-end equipment. The method comprises the following steps: the transmitting-end equipment adds path configuration information to a message sent to an opposite end, wherein the path configuration information includes serial number information and priority information of a path; and the transmitting-end equipment sends the receiving-end equipment the message to which the path configuration information is added. By the adoption of the protection configuration method, the protection configuration system, the transmitting-end equipment and the receiving-end equipment, the problem that two endpoints cannot agree on a path to be switched in the event of path failure so as to cause service interruption in the related technology is solved, the two endpoints can negotiate, service interruption caused by unsuccessful negotiation is avoided, and the system performance is improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of method, system, sending ending equipment and receiving device of protecting configuration.
Background technology
The resist technology that transmits at present network has linear protection and looped network protection, and relevant agreement is formulated respectively at ITU-T and IETF.For example; the standard that ITU-T formulates G.8131, G.8132; the agreement adopting is automatic protection switching (Automatic Protection Switching; referred to as APS); the protection turning protocol of ietf definition (Protection State Coordination;, referred to as PSC), relevant standard has RFC6378.In view of 1+1 and the 1:1 standard of linear protection switching, a Protection path can only be protected an operating path, and in order to improve the utilance of resource, these two normal structures have developed respectively the protection switching technique of 1:N.
The framework that 1:N protection is switched as shown in Figure 1; between network element (Network Element is referred to as NE) A and NE B, there is N bar operating path;, a Protection path; this N+1 paths is shared risk link group (Shared Risk Link Group as far as possible; referred to as SRLG) separated, the probability of minimizing simultaneous faults.Article one, Protection path protection N bar operating path, walks the reserved resource of maximum bandwidth requirement in path altogether according to this N bar; When an operating path lost efficacy, protect the path of this inefficacy; The in the situation that of mulitpath simultaneous faults, only protect the paths that priority is the highest.Here relate to two end points the distribution of path priority is wanted to consistent, otherwise when mulitpath simultaneous faults, two end nodes are inconsistent to the path negotiation that will switch, cause protection turning protocol APS or PSC to enter halted state, service outage duration is long.
Further, it is all based on webmaster (Network Management System, referred to as NMS) that configuration is switched in the protection of current transmission network, at two nodes, configures respectively, and manual operations easily configuration makes mistakes; The network management system of each manufacturer is all privately owned scheme in addition, and interconnecting property is bad.For example, the NE A in Fig. 1 is A manufacturer, and NE B in figure is B manufacturer, and the NEA of A manufacturer is configured by its network management system NMS A; The NE B of B manufacturer is configured by its network management system NMS B.In view of lacking the standard interconnecting between NMS A and NMS B; the co-ordination of its configuration can only be passed through BSS (Business Support System)/OSS (the Operation Support System) system of group of operator, and at present NMS does not relate to the configuration of protection with the northbound interface of BSS/OSS intercommunication yet.
Summary of the invention
The invention provides a kind of method, system, sending ending equipment and receiving device of protecting configuration, at least to solve in correlation technique, in the situation of path fails, two end points are inconsistent to the path negotiation that will switch, cause the problem of service disconnection.
According to an aspect of the present invention, provide a kind of method of protecting configuration, having comprised: sending ending equipment adds path configuration information in mailing to the message of opposite end, wherein, described path configuration information comprises number information and the precedence information in path; Described sending ending equipment will add the message of described path configuration information to be sent to receiving device.
Preferably, sending ending equipment adds path configuration information to comprise in mailing to the message of opposite end: described path configuration information comprises the first field and the second field, wherein, described the first field is used to indicate the numbering in described path, and described the second field is used to indicate the priority in described path.
Preferably, described path configuration information is carried at RSVP (the RSVP-Traffic Engineering based on traffic engineering expansion, referred to as RSVP-TE) in signaling, wherein, in described path configuration information, only comprise the path configuration information corresponding with described path.
Preferably, in the situation that only comprise the path configuration information corresponding with described path in described path configuration information, described path configuration information is carried in the PATH message in described path.
Preferably, at described path configuration information, carry under protection turning protocol or advertizing protocol scene, described path configuration information also comprises the 3rd field and the 4th field, wherein, described the 3rd field is used to indicate the Tunnel ID sign in described path, and described the 4th field is used to indicate the LSP ID sign in described path; Described path configuration information transmits on Protection path, and described path configuration information comprises the path configuration information in all paths.
Preferably, described sending ending equipment also comprises after the message that adds described path configuration information is sent to receiving device: described receiving device receives the described path configuration information from sending ending equipment; Described receiving device is protected configuration according to described path configuration information to described path.
Preferably, described receiving device protects configuration to comprise according to described path configuration information to described path: in the situation that the priority of mulitpath fault and described mulitpath is not identical, according to the priority in described path, determine the path of this time switching in described mulitpath; In the situation that the priority of described mulitpath fault and described mulitpath is identical, according to the numbering in described path, in described mulitpath, determine the path of this time switching.
According to another aspect of the present invention, provide a kind of sending ending equipment, having comprised: add module, for the message mailing to opposite end, add path configuration information, wherein, described path configuration information has comprised number information and the precedence information in path; Sending module, for adding the message of described path configuration information to be sent to receiving device.
Preferably, described interpolation module adds path configuration information in the following manner: described path configuration information comprises the first field and the second field, wherein, described the first field is used to indicate the numbering in described path, and described the second field is used to indicate the priority in described path.
Preferably, described sending module, for described path configuration information being carried to the signaling at RSVP-TE, wherein, only comprises the path configuration information corresponding with described path in described path configuration information.
Preferably, described interpolation module, for carrying at described path configuration information under protection turning protocol or advertizing protocol scene, described path configuration information also comprises the 3rd field and the 4th field, wherein, described the 3rd field is used to indicate the Tunnel ID sign in described path, and described the 4th field is used to indicate the LSP ID sign in described path; Described sending module for carrying at described path configuration information under protection turning protocol or advertizing protocol scene, transmits described path configuration information on Protection path, and wherein, described path configuration information comprises the path configuration information in all paths.
According to a further aspect of the invention, provide a kind of receiving device, having comprised: receiver module, for receiving the described path configuration information from sending ending equipment, wherein, described path configuration information comprises number information and the precedence information in path; Configuration module, for protecting configuration according to described path configuration information to described path.
Preferably, described configuration module is configured in such a way: in the situation that the priority of mulitpath fault and described mulitpath is not identical, according to the priority in described path, determine the path of this time switching in described mulitpath; In the situation that the priority of described mulitpath fault and described mulitpath is identical, according to the numbering in described path, in described mulitpath, determine the path of this time switching.
According to a further aspect of the invention, provide a kind of system of protecting configuration, it is characterized in that, having comprised: receiving device described in the described sending ending equipment of above-mentioned any one and above-mentioned any one.
The present invention has adopted following method: sending ending equipment is added in path configuration information in the message of transmission, and will add the message of this path configuration information to be sent to receiving device, wherein, and the numbering that path configuration information is path and precedence information.By using the present invention, in the message sending, add path configuration information, by the path configuration information and the receiving device that add, hold consultation, solved in correlation technique in the situation of path fails, two end points are inconsistent to the path negotiation that will switch, cause the problem of service disconnection, and then two endpoint devices can be held consultation, can, again because fail to consultations and interrupting service, not promote the performance of system.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 switches the schematic diagram of framework according to the protection of correlation technique;
Fig. 2 is according to the flow chart of the method for the protection configuration of the embodiment of the present invention;
Fig. 3 is according to the structural representation one of the TLV message of the embodiment of the present invention;
Fig. 4 is according to the structural representation two of the TLV message of the embodiment of the present invention;
Fig. 5 is according to the flow chart of the method for the receiving device protection configuration of the embodiment of the present invention;
Fig. 6 is the structural representation of object of protection in expansion RSVP-TE signaling protocol according to the preferred embodiment of the present invention one;
Fig. 7 is the structural representation of PSC message format in expansion PSC agreement according to the preferred embodiment of the present invention two;
Fig. 8 is according to the structured flowchart of the sending ending equipment of the embodiment of the present invention;
Fig. 9 is according to the structured flowchart of the receiving device of the embodiment of the present invention;
Figure 10 is according to the structured flowchart of the system of the protection configuration of the embodiment of the present invention.
Embodiment
Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
In situation based on path fails in correlation technique; two end points are inconsistent to the path negotiation that will switch, cause the problem of service disconnection, and the embodiment of the present invention provides a kind of method of protecting configuration; the flow process of the method as shown in Figure 2, comprises that step S202 is to step S204:
Step S202, sending ending equipment adds path configuration information in mailing to the message of opposite end, and wherein, path configuration information comprises number information and the precedence information in path;
Step S204, sending ending equipment will add the message of path configuration information to be sent to receiving device.
The embodiment of the present invention has adopted following method: sending ending equipment is added in path configuration information in the message of transmission, and will add the message of this path configuration information to be sent to receiving device, wherein, and the numbering that path configuration information is path and precedence information.By using the embodiment of the present invention, in the message sending, add path configuration information, by the path configuration information and the receiving device that add, hold consultation, solved in correlation technique in the situation of path fails, two end points are inconsistent to the path negotiation that will switch, cause the problem of service disconnection, and then two endpoint devices can be held consultation, can, again because fail to consultations and interrupting service, not promote the performance of system.
In the process of implementing at step S202, described path configuration information comprises the first field and the second field, and wherein, the first field is used to indicate the numbering in path, and the second field is used to indicate the priority in path.In this step implementation process, can be also that the mapping relations of the first field and the second Related fields are added.Added after number information and precedence information, sending ending equipment can will add the message of this path configuration information to send, and consults by the path configuration information and the receiving device that add.
At sending ending equipment, the message that adds path configuration information is sent in the process of receiving device, if path is under the scene by the dynamic creation of RSVP-TE signaling, in path configuration information, only comprises the configuration information in this path.
In implementation process, if information or the mapping relations of this path configuration information reflection are carried in the signaling of a paths, for example, in the path of RSVP-TE (Path) message or LSP Ping, the structure of this TLV message can be as shown in Figure 3 so.Wherein, Path field represents the numbering in this path, and Priority field represents the priority in this path; Although the Path field here and Priority field are all 8 bits, be only in order to illustrate herein, in the actual process of implementing, can arrange arbitrarily its bit number, do not limit herein.
At sending ending equipment, the message that adds path configuration information is sent in the process of receiving device, if current, in path configuration information, carry under protection turning protocol or advertizing protocol scene, described path configuration information can also comprise the 3rd field and the 4th field, wherein, the 3rd field is used to indicate the Tunnel ID sign in path, the 4th field is used to indicate the LSP ID sign in path, adds the TLV message format after above-mentioned two fields can be as shown in Figure 4; Path configuration information transmits on Protection path, and path configuration information comprises the path configuration information in all paths.
In implementation process; if the information of path configuration information reflection or mapping relations are carried protection turning protocol (APS or PSC); or other advertizing protocol; for example general in path channels advertizing protocol (Gach Advertisement Protocol; referred to as GAP) in; in view of PSC(or APS) be to operate on Protection path, need to carry the path configuration information (mapping relations) of N+1 paths, its TLV structure can be illustrated in fig. 4 shown below.
In Fig. 4; the unique identification of one paths consists of Global ID, Node ID, Tunnel ID, LSP ID; in view of the head and the tail node of 1:N Protection path identical; thereby Global ID and Node ID can save; only with Tunnel ID:LSP ID, come the path in 1:N protection group of unique identification; Path is the number to this path allocation, the priority that Priority is this path allocation.In this TLV, carried the sign of this N+1 paths with the mapping relations of Path and Priority.When the number in path is odd number, after to all be filled to 0, Padding, makes to change TLV4 byte-aligned; When the number in path is even number, natural alignment, no longer needs padding.
After the sending ending equipment of step S204 is sent to receiving device by the message that adds path configuration information, receiving device receives its signaling, and this process comprises that the step S502 shown in Fig. 5 is to step S504:
Step S502, receiving device receives the path configuration information from sending ending equipment;
Step S504, receiving device is protected configuration according to path configuration information to path.
In the process of implementing at step S504, receiving device is configured the protection process in this path according to the numbering of each paths and precedence information.
In layoutprocedure; if in the not identical situation of the priority in mulitpath fault and mulitpath; receiving device is determined the path of this time switching according to the priority in path in mulitpath, for example, configuration is first protected to according to path configuration information in the path that priority is higher.If in the identical situation of the priority of receiving device in mulitpath fault and mulitpath, can in mulitpath, determine the path of this time switching according to the numbering in path, for example, the maximum path of numbering is switched in first protection.
The embodiment of the present invention is by adding the information (or being called mapping relations) of path and priority, and is carried in a TLV structure, by an end node, sends to another one end node.Secondly, when the information of this path configuration information reflection or mapping relations are received in opposite end, can automatically or manually protect configuration based on this path configuration information.
Adopt embodiment of the present invention method, the configuration consistency of two end nodes can guaranteeing 1:N protection system to path priority, the in the situation that of mulitpath simultaneous faults, what service message can be correct is switched on Protection path.
Below in conjunction with accompanying drawing and preferred embodiment, embodiment of the present invention is further illustrated.
Preferred embodiment one
This preferred embodiment is the priority configuration consistency of two end nodes to path of guaranteeing to carry out protection turning protocol, has proposed a kind of method of protecting configuration, and this embodiment carries the mapping item of path and priority in expansion RSVP-TE signaling protocol.
As shown in Figure 1, node A(NE A) and between Node B (NE B) configured 1:N protection group, a Protection path protection N bar operating path.Node A and Node B are the common first and last nodes of this N+1 paths, can directly be connected, also can in span many nodes.Generally speaking this N+1 paths belongs to different SRLG, among the optical fiber in different, when there is the accident that optical fiber cuts off, only has a paths and is affected like this, is unlikely to N+1 paths and all can not uses.Protection path be numbered 0, the numbering of operating path is successively from 1 to N.If this N+1 paths is control plane Dynamic Establishing, generate, each is all that independent signaling creates, and the mapping item of path and priority can be taken to the other end from one end so in the process creating.
On A point, the establishment of this N+1 paths can, based on NMS, can be also order line (Command-Line Interface, referred to as CLI), or other mode trigger; There is an independent signaling procedure in each path.
The signaling Path message in each path of sending from A point, can carry a protection (Protection) object associated with (Association) object; its definition all has explanation in RFC4872 and RFC4873; wherein; affiliated partner is associated together this N+1 paths to have formed a protection group, and it is that Protection path or operating path and protection are switched based on transmitting plane or control plane that Protection object indicates this path.Wherein, as shown in Figure 6, when the type of LSP Flags is " 0x041:N Protection with Extra-Traffic ", if path is operating path, P flag bit and S flag bit must zero clearings for the form of object of protection; If path is Protection path, S flag bit zero clearing so, P mark position 1.
When it carries sub-TLV, its mapping relations of carrying path priority and path number are as follows: if path is Protection path, so, here the Mapping TLV of definition can be used as a TLV of this object or an object of following, wherein Path field is set to 0, the priority that is numbered 0, Priority that shows Protection path is set to the highest, such as being 0; If path is operating path, wherein Path field is set to the numbering in path, such as being the priority that 3, Priority field is set to path, such as 20.It should be noted that different path number necessarily can not be identical, the same but its priority can be configured to.If it is the same that priority is configured to, during the simultaneous faults of two priority is identical so path, can decide and switch any paths based on channel number, for example, switch the minimum path of numbering.
The Path message that A point sends can could arrive destination node B through a jumping or multi-hop, after B point receives the Path message of this N+1 paths, extracts affiliated partner and object of protection wherein.Wherein, the sign that affiliated partner is unique a protection group, in object of protection, carry the configuration information of this protection group, and these configuration informations are used for protecting configuration.For receiving device B point, from the carrier of sign path priority and path number mapping relations, in (can be an independent object, can be also the sub-TLV of object of protection, or other mode), extract these mapping relations; For the mapping relations of configuration path and priority, guarantee to configure with A point unanimously.Wherein, the information extracting can automatically be submitted to and protect configuration, generates the mapping relations list item in configuration information; Also can first be and dedicate webmaster to, webmaster issues protection configuration order again to protect configuration.
Preferred embodiment two
This preferred embodiment is the priority configuration consistency of two end nodes to path of guaranteeing to carry out protection turning protocol, has proposed a kind of method of 1:N protection configuration, and this embodiment carries the mapping item of path and priority in expansion PSC agreement.
As shown in Figure 1, node A(NE A) and between Node B (NE B) configured 1:N protection group, a Protection path protection N bar operating path.Node A and Node B are the common first and last nodes of this N+1 paths, can directly be connected, also can in span many nodes.Generally speaking this N+1 paths belongs to different SRLG, among the optical fiber in different, when there is the accident that optical fiber cuts off, only has a paths and is affected like this, is unlikely to N+1 paths and all can not uses.Protection path be numbered 0, the numbering of operating path is successively from 1 to N.This N+1 paths can be webmaster static configuration, and webmaster is the forwarding-table item of configuration path not only, and while configuration protection group also enables protection group, and two end nodes are sent out mutually protection turning protocol on Protection path, can be that PSC can be also APS.Here expand PSC or APS agreement is carried the mapping item of path and priority.Seemingly, below with PSC as an example, PSC agreement is done message format that 1:N protection switches as shown in Figure 7 to the extension class of PSC or APS.
In implementation process, webmaster distribution configuration command, inserts the Mapping TLV of Fig. 4 definition, as the optional TLV of PSC message in the PSC message that indication sends to B point at A point; In order to reduce the expense of message, can in first three message, insert this TLV, and need not insert in TLV message below, can certainly insert always, do not limit here.When B node is received after this PSC message, resolve the Mapping TLV carrying.If this node has been configured the mapping item of this path and priority, check be configured with from A point, send whether consistent, if unanimously, need not revise; If inconsistent, revise this mapping item, its mapping item sending with A point is consistent.If this node does not have the mapping item of configuration path and priority, at B point, extract the mapping item that A point sends so, be stored in this locality, the path switching judgement during for consequent malfunction.
Receiving device B point can carry this Mapping TLV in mailing to the response PSC message that A orders.If carried, illustrate that B point has configured local mapping item with A point consistent; Here in order to reduce message expense, also can only in first three response message, carry this TLV, also can carry always.Certainly, B point can not carry this Mapping TLV in mailing to the response PSC message that A orders yet, the configuration modification that acquiescence B point is bound to order according to A.
Preferred embodiment three
This preferred embodiment, in the process of the normal operation of 1:N protection group, may have new path and add this protection group; Or a paths is bearer service no longer, from this Protection path group, delete, therefore proposed to add or delete in a kind of layoutprocedure of Protection path the method in path.
If newly having added the numbering in the ，Gai path, path of a dynamic creation may be K, K can not be work existing in any one protection group or the numbering of Protection path, and priority may be X, and this informational needs is carried at A point and mails in the Path message that B orders.After receiving this information, B point preserves and protects configuration.
If dynamically delete a paths; at A point, mail to the TLV that carries this sign path and path priority mapping relations in the Path Tear message that B orders so; B point receives the mapping presentation that can preserve from this locality after this message delete this entry, and is advertised as protection and switches module.
If newly having added the numbering in the ，Gai path, path of a static configuration may be K, K can not be work existing in any one protection group or the numbering of Protection path, and priority may be X, and this informational needs is carried at A point and mails in the PSC message that B orders.In order to reduce the expense of message, can upgrade in message and insert and upgrade TLV later at first three PSC, and need not insert in TLV message below, can certainly insert always, do not limit here.In addition, this TLV can carry the mapping relations of the path same priority in all paths (comprising K paths), also can only carry the mapping relations of K paths, in order to reduce message expense, can only carry the mapping relations of K paths.
After B point receives this information, preserve, B point can carry the Mapping TLV of this renewal in mailing to the response PSC message that A orders.If carried, illustrate that B point has configured local mapping item with A point consistent; Here in order to reduce message expense, also can only in first three response message, carry this TLV, also can carry always.Certainly, B point can not carry this Mapping TLV in mailing to the response PSC message that A orders yet, the configuration modification that acquiescence B point is bound to order according to A.In like manner; if static state has been deleted K paths; at A point, mail in the PSC message that B orders and will carry the mapping TLV upgrading so; can be only the mapping relations of reflection K paths; also can be the mapping relations in the path in the remaining protection group of reflection; after B point receives this information, preserve, and optionally in mailing to the response PSC message that A orders, carry the Mapping TLV of this renewal.
The embodiment of the present invention also provides a kind of sending ending equipment, the structure of this equipment as shown in Figure 8, comprising: add module 10, for the message mailing to receiving terminal, add path configuration information, wherein, path configuration information comprises number information and the precedence information in path; Sending module 20, is coupled with adding module 10, for adding the message of path configuration information to be sent to receiving device.
In implementation process, add module 10 and add in the following manner path configuration information: described path configuration information comprises the first field and the second field, and wherein, the first field is used to indicate the numbering in path, and the second field is used to indicate the priority in path.
In different scenes, sending module 20 is for carrying out different operations.Under RSVP-TE scene, sending module 20 is carried at path configuration information in RSVP-TE signaling, in protection group, on all path, transmits path configuration information, wherein, only comprises the path configuration information corresponding with path in path configuration information.In implementation process, adding module 10 carries under protection turning protocol or advertizing protocol scene at path configuration information, described path configuration information also comprises the 3rd field and the 4th field, wherein, the 3rd field is used to indicate the Tunnel ID sign in path, and the 4th field is used to indicate the LSP ID sign in path;
Sending module 20, for carrying at path configuration information under protection turning protocol or advertizing protocol scene, sending module 20 transmits path configuration information on Protection path, and wherein, path configuration information comprises the path configuration information in all paths.
The embodiment of the present invention also provides a kind of receiving device, and this receiving equipment as shown in Figure 9, comprising: receiver module 30, and for receiving the path configuration information from sending ending equipment, wherein, path configuration information comprises number information and the precedence information in path; Configuration module 40, with receiver module 30 couplings, for configuration being protected in path according to path configuration information.
In implementation process, configuration module 40 is configured in such a way: in the situation that the priority of mulitpath fault and mulitpath is not identical, according to the priority in path, determine the path of this time switching in mulitpath; In the situation that the priority of mulitpath fault and mulitpath is identical, according to the numbering in path, in mulitpath, determine the path of this time switching.
The embodiment of the present invention also provides a kind of system of protecting configuration, and the structure of this system as shown in figure 10, comprises above-mentioned sending ending equipment 1 and receiving device 2.
As can be seen from the above description, the present invention has realized following technique effect:
The embodiment of the present invention has adopted following method: sending ending equipment is added in path configuration information in the message of transmission, and will add the message of this path configuration information to be sent to receiving device, wherein, and the numbering that path configuration information is path and precedence information.By using the embodiment of the present invention, in the message sending, add path configuration information, by the path configuration information and the receiving device that add, hold consultation, solved in correlation technique in the situation of path fails, two end points are inconsistent to the path negotiation that will switch, cause the problem of service disconnection, and then two endpoint devices can be held consultation, can, again because fail to consultations and interrupting service, not promote the performance of system.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out shown or described step with the order being different from herein, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (14)
1. a method of protecting configuration, is characterized in that, comprising:
Sending ending equipment adds path configuration information in mailing to the message of opposite end, and wherein, described path configuration information comprises number information and the precedence information in path;
Described sending ending equipment will add the message of described path configuration information to be sent to receiving device.
2. method according to claim 1, is characterized in that, sending ending equipment adds path configuration information to comprise in mailing to the message of opposite end:
Described path configuration information comprises the first field and the second field, and wherein, described the first field is used to indicate the numbering in described path, and described the second field is used to indicate the priority in described path.
3. method according to claim 1 and 2, it is characterized in that, described path configuration information is carried in the RSVP RSVP-TE signaling based on traffic engineering expansion, wherein, only comprises the path configuration information corresponding with described path in described path configuration information.
4. method according to claim 3, is characterized in that, in the situation that only comprise the path configuration information corresponding with described path in described path configuration information, described path configuration information is carried in the PATH message in described path.
5. method according to claim 2, it is characterized in that, at described path configuration information, carry under protection turning protocol or advertizing protocol scene, described path configuration information also comprises the 3rd field and the 4th field, wherein, described the 3rd field is used to indicate the Tunnel ID sign in described path, and described the 4th field is used to indicate the LSP ID sign in described path;
Described path configuration information transmits on Protection path, and described path configuration information comprises the path configuration information in all paths.
6. method according to claim 1, is characterized in that, described sending ending equipment also comprises after the message that adds described path configuration information is sent to receiving device:
Described receiving device receives the described path configuration information from sending ending equipment;
Described receiving device is protected configuration according to described path configuration information to described path.
7. method according to claim 6, is characterized in that, described receiving device protects configuration to comprise according to described path configuration information to described path:
In the situation that the priority of mulitpath fault and described mulitpath is not identical, according to the priority in described path, in described mulitpath, determine the path of this time switching;
In the situation that the priority of described mulitpath fault and described mulitpath is identical, according to the numbering in described path, in described mulitpath, determine the path of this time switching.
8. a sending ending equipment, is characterized in that, comprising:
Add module, for the message mailing to opposite end, add path configuration information, wherein, described path configuration information comprises number information and the precedence information in path;
Sending module, for adding the message of described path configuration information to be sent to receiving device.
9. sending ending equipment according to claim 8, is characterized in that, described interpolation module adds path configuration information in the following manner:
Described path configuration information comprises the first field and the second field, and wherein, described the first field is used to indicate the numbering in described path, and described the second field is used to indicate the priority in described path.
10. sending ending equipment according to claim 8 or claim 9, it is characterized in that, described sending module, for described path configuration information being carried to the RSVP RSVP-TE signaling based on traffic engineering expansion, wherein, in described path configuration information, only comprise the path configuration information corresponding with described path.
11. sending ending equipments according to claim 9, it is characterized in that, described interpolation module, for carrying at described path configuration information under protection turning protocol or advertizing protocol scene, described path configuration information also comprises the 3rd field and the 4th field, wherein, described the 3rd field is used to indicate the Tunnel ID sign in described path, and described the 4th field is used to indicate the LSP ID sign in described path;
Described sending module for carrying at described path configuration information under protection turning protocol or advertizing protocol scene, transmits described path configuration information on Protection path, and wherein, described path configuration information comprises the path configuration information in all paths.
12. 1 kinds of receiving devices, is characterized in that, comprising:
Receiver module, for receiving the described path configuration information from sending ending equipment, wherein, described path configuration information comprises number information and the precedence information in path;
Configuration module, for protecting configuration according to described path configuration information to described path.
13. receiving devices according to claim 12, is characterized in that, described configuration module is configured in such a way:
In the situation that the priority of mulitpath fault and described mulitpath is not identical, according to the priority in described path, in described mulitpath, determine the path of this time switching;
In the situation that the priority of described mulitpath fault and described mulitpath is identical, according to the numbering in described path, in described mulitpath, determine the path of this time switching.
14. 1 kinds of systems of protecting configuration, is characterized in that, comprising: the described sending ending equipment of any one and the described receiving device of claim 12 or 13 in claim 8 to 11.
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