CN103888280A - Cross-domain path state negotiation method and node device - Google Patents
Cross-domain path state negotiation method and node device Download PDFInfo
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- CN103888280A CN103888280A CN201210558890.9A CN201210558890A CN103888280A CN 103888280 A CN103888280 A CN 103888280A CN 201210558890 A CN201210558890 A CN 201210558890A CN 103888280 A CN103888280 A CN 103888280A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
- H04L45/04—Interdomain routing, e.g. hierarchical routing
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Abstract
The invention discloses a cross-domain path state negotiation method and a node device and aims to solve a problem of path selection inconsistency of two end nodes on a cross-domain path. The method comprises steps that: a cross-domain backup interconnection node on a protection path crossing two adjacent domains determines the local path state according to a path state detected by the present node and/or the path state information sent by the protection path at the end nodes on the two adjacent domains, the path state information sent by the end nodes represents the path state detected by the end present node; based on the local path state, the cross-domain backup interconnection node sends the path state information representing the local path state to the end nodes. The node device comprises a local path state determining module and a sending module. The method and the device guarantee cross-domain path selection consistency, so cross-domain business can be correctly protected and recovered.
Description
Technical field
The present invention relates to the communications field, be specifically related to a kind of cross-domain path status machinery of consultation and node apparatus.
Background technology
Current at ITU-T(International Telecommunications Union telecommunication standardsization tissue) protectioninterworking(protects intercommunication) in draft standard, interlink node is being discussed and is being broken down in situation, be switched to corresponding Protection path and carry out business transmission.As shown in Figure 1, territory 1 comprises node A, B, C, and territory 2 comprises Node B, C, D, and territory 1 and territory 2 are adjacent domains, and Node B and C are cross-domain interlink node.Solid line connecting line in Fig. 1 between node is operating path, and the dotted line connecting line between node is Protection path.Under normal circumstances, business (heavy line in figure) selects cross-domain operating path A-B-D to transmit; In the time that cross-domain interlink node B breaks down, node A and D are switched to Protection path A-C-D sending and receiving business, as shown in Figure 2.If in the process of Protection path A-C-D sending and receiving business; Protection path C-D also breaks down; because territory 1 interior nodes A can not know that C-D link breaks down; and for node D; because it detects C-D link failure; still select former operating path A-B-D sending and receiving business, as shown in Figure 3, thereby occur two ends, cross-domain path node path selection inconsistence problems.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of cross-domain path status machinery of consultation and device, avoids occurring that on cross-domain path, two ends node path is selected inconsistent situation.
For solving the problems of the technologies described above, the invention provides a kind of cross-domain path status machinery of consultation, comprising:
The path status information that the path status detecting according to this section point across the cross-domain backup interlink node on the Protection path in adjacent two territories and/or the described Protection path end node on described adjacent two territories sends, determine local path state, the path status information that described end node sends represents the path status that current end node detects;
Described cross-domain backup interlink node sends the path status information that represents described local path state to end node based on described local path state.
Further, the path status information that the path status information that described end node sends and described cross-domain backup interlink node send is all carried in state negotiation packet.
Further, the path status information that the path status that described cross-domain backup interlink node detects according to this section point and/or described end node send, determine local path state, comprise: the path status information that the path status that described cross-domain backup interlink node detects according to this section point and/or described end node send, select the highest path status of priority as local path state.
Further, the path status information that the path status that described cross-domain backup interlink node detects according to this section point and/or described end node send, selects the highest path status of priority as local path state, comprising:
The path status information of path status that the expression that the path status that described cross-domain backup interlink node detects according to this section point and one or two end node send detects when front end node, selects path status that priority is the highest as local path state; Or
The path status that described cross-domain backup interlink node detects according to this section point, selects the highest path status of priority as local path state; Or
The path status information of the path status that the expression that described cross-domain backup interlink node sends according to one or two end node detects when front end node, selects path status that priority is the highest as local path state.
Further, described cross-domain backup interlink node sends the path status information that represents described local path state to end node based on described local path state, comprising:
If the path status priority of described cross-domain this cross-domain backup interlink node of backup interlink node judgement is less than or equal to the priority of end node path status, send without request (NR) state information to described end node, if the path status priority of this cross-domain backup interlink node of judgement, higher than the priority of end node path status, sends to described end node the information that represents described cross-domain backup interlink node local path state.
Further, described cross-domain backup interlink node sends the path status information that represents described local path state to end node based on described local path state, comprising: the information that represents this cross-domain backup interlink node local path state is sent to end node.
Further; described method also comprises: business is in described cross-domain Protection path transmitting procedure; end node receives the path status information of the described local path state of expression of described cross-domain backup interlink node transmission; the priority of the local path state of more described cross-domain backup interlink node and the path status of this end points, selects the higher state executable operations of priority.
Further, described operation comprises any one of following operation: do not switch, switching, switchback.
For solving the problems of the technologies described above; the present invention also provides a kind of node apparatus that cross-domain path status is consulted of realizing; described node apparatus is cross-domain backup interlink node on the Protection path being positioned at across adjacent two territories; described node apparatus comprises: local path state determination module and sending module, wherein:
Described local path state determination module, for the path status information that the end node on described adjacent two territories sends according to the path status of this section point detection and/or described Protection path, determine local path state, the path status information that described end node sends represents the path status that current end node detects;
Described sending module, for the described local path state of determining based on local path state determination module, sends the path status information that represents described local path state to end node.
Further, described node apparatus also comprises receiver module, the state negotiation packet that described receiver module sends for receiving the end node of described Protection path on described adjacent two territories, carries the path status information of the path status that expression detects when front end node in described state negotiation packet;
Described sending module, for sending the path status information that represents described local path state to end node by state negotiation packet.
Further, the path status information that the path status that described local path state determination module detects according to this section point and/or described end node send, determine local path state, comprise: the path status information that the path status that described local path state determination module detects according to this section point and/or described end node send, select the highest path status of priority as local path state.
Further, the path status information that the path status that described local path state determination module detects according to this section point and/or described end node send, selects the highest path status of priority as local path state, comprising:
The path status information of path status that the expression that the path status that described local path state determination module detects according to this section point and one or two end node send detects when front end node, selects path status that priority is the highest as local path state; Or
The path status that described local path state determination module detects according to this section point, selects the highest path status of priority as local path state; Or
The path status information of the path status that the expression that described local path state determination module sends according to one or two end node detects when front end node, selects path status that priority is the highest as local path state.
Further, described sending module sends the path status information that represents described local path state to end node based on described local path state, comprise: if the path status priority of this cross-domain backup interlink node of described sending module judgement is less than or equal to the priority of end node path status, send without request (NR) state information to described end node, if the path status priority of this cross-domain backup interlink node of judgement is higher than the priority of end node path status, send to described end node the information that represents described cross-domain backup interlink node local path state.
Further, described sending module sends the path status information that represents described local path state to end node based on described local path state, comprising: the information that represents this cross-domain backup interlink node local path state is sent to end node by described sending module.
The application is by carrying out cross-domain state negotiation between node; detecting and/or be advertised after this node two ends Link State by cross-domain backup interlink node; in adjacent domains the state of corresponding Protection path as a local state input factor; by link-local state advertisement to other end nodes on territory; to guarantee that on cross-domain path, two end nodes are switched to reception and transmission business on same path; thereby guarantee the consistency of cross-domain Path selection, so that protection and recovery that cross-domain service can be correct.
Accompanying drawing explanation
When Fig. 1 is prior art normal condition, business transmits schematic diagram;
When Fig. 2 is prior art interlink node fault, business transmits schematic diagram;
Fig. 3 is that in prior art, business transmits inconsistent schematic diagram;
Fig. 4 is the embodiment of the present invention 1 flow chart;
Fig. 5 is the embodiment of the present invention 2 flow charts;
Fig. 6 is the correct switch protecting schematic diagram of the embodiment of the present invention 2;
Fig. 7 is the embodiment of the present invention 4 apparatus module composition structural representations.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing, embodiments of the invention are elaborated.It should be noted that, in the situation that not conflicting, the combination in any mutually of the feature in embodiment and embodiment in the application.
Embodiment 1
The present embodiment is described a kind of cross-domain path status machinery of consultation, as shown in Figure 4, comprises the following steps:
Step 101, the path status information that the path status detecting according to this section point across the cross-domain backup interlink node on the Protection path in adjacent two territories and/or the described Protection path end node on described adjacent two territories sends, determine local path state, the path status information that described end node sends represents the path status that current end node detects;
The path status information that the path status information that end node sends and described cross-domain backup interlink node send is all carried in state negotiation packet.State negotiation packet can adopt existing state negotiation mechanism, as APS(Automatic Protection Switched, APS) or PSC(Protection StateCoordination, guard mode is consulted).
Whether path status information is used to indicate path and breaks down.
In a preferred embodiment, the path status information that the path status that cross-domain backup interlink node detects according to this section point and/or described end node send, selects the highest path status of priority as local path state, specifically comprises following several situation:
(1) the path status information of path status that the expression that the path status that cross-domain backup interlink node detects according to this section point and one or two end node send detects when front end node, selects path status that priority is the highest as local path state; Or
(2) path status (comprising the path in adjacent two territories) that cross-domain backup interlink node detects according to this section point, selects the highest path status of priority as local path state; Or
(3) the path status information of the path status that the expression that described cross-domain backup interlink node sends according to one or two end node detects when front end node, selects path status that priority is the highest as local path state.
Step 102, described cross-domain backup interlink node sends the path status information that represents described local path state to end node based on described local path state.
Cross-domain backup interlink node sends respectively the path status information of this node to cross-domain Protection path two end nodes, comprise following two kinds of situations:
Situation one:
Cross-domain backup interlink node directly sends to described end node by the information that represents this cross-domain backup interlink node local path state;
Situation two:
If the path status priority of cross-domain this cross-domain backup interlink node of backup interlink node judgement is less than or equal to the priority of described end node path status, send NR(NoneRequest to described end node, without request) state information, if the path status priority of this cross-domain backup interlink node of judgement, higher than the priority of end node path status, sends to this end node the information that represents described cross-domain backup interlink node local path state.
For end node; no matter above-mentioned situation one or situation two; business is in above-mentioned cross-domain Protection path transmitting procedure; end node receives the path status information of the expression local path state of cross-domain backup interlink node transmission; the priority of the local path state of more cross-domain backup interlink node and the path status of this end points, selects the higher state executable operations of priority.Aforesaid operations comprise following operation any one: do not switch, switching, switchback.Except the operation of herein listing, do not get rid of end node and carry out other operations.In addition, different from aforesaid operations title but move identical operation still within protection range of the present invention.
By the present embodiment method, make cross-domain path two end nodes select unified path to carry out sending and receiving business, guarantee the two ends node switches consistency of cross-domain Protection path.
Embodiment 2
The present embodiment is a preferred embodiment, and the path status detecting in conjunction with this section point with cross-domain backup interlink node and the path status of end node are determined local path state, and above-mentioned situation two is specifically described method in embodiment 1 for example.
First be cross-domain operating path configuration protection path in each territory, in those territories, Protection path is spliced into a cross-domain Protection path jointly.Be cross-domain backup associated nodes across the cross-domain associated nodes on adjacent domains Protection path.Incidence relation in the configuration of cross-domain backup associated nodes through the cross-domain Protection path of this cross-domain backup associated nodes Protection path in same area not.Described method as shown in Figure 5, comprising:
Step 201, path two end nodes in territory (two end nodes of Protection path on adjacent two territories of Protection path approach) regularly detect the path status situation on path in this territory, comprise whether link failure occurs, and in this territory on path interlink node whether break down, if link failure occurs in path in territory, and there is interlink node fault, execution step 202, if only in territory path there is link failure, or interlink node fault only, starts in the territory in and protects;
In territory described herein, path comprises operating path and Protection path.
In territory, protection can adopt art methods to realize, and repeats no more herein.
Step 202, in territory, path two end nodes send state negotiation packet, the information of carrying the path status that in territory, path two end nodes detect separately in message to cross-domain backup associated nodes;
For end node in arbitrary territory, the highest state information of priority that this node this locality is detected sends to cross-domain backup interlink node.
In territory, path two end nodes regularly send state negotiation packet to cross-domain backup associated nodes.
The present embodiment describes as an example of two-end-point example, if certain end node fault wherein also may only have an end node to send state negotiation packet.A kind of extreme situation is, all faults of two end nodes, and cross-domain backup associated nodes will can not receive the state negotiation packet that end node sends.
Step 203, cross-domain backup associated nodes receives after the path status information that in territory, path two end nodes send, and the path status detecting in conjunction with this section point selects the path status of limit priority as the path status of this node;
Particularly, when backup interlink node receives the state negotiation packet that the peer node in each territory sends over, according to the state of corresponding Protection path in the Link State on each territory and adjacent domains, select a state that priority is the highest as local path state.In adjacent domains described herein, corresponding Protection path is the Protection path with incidence relation.
Step 204, cross-domain backup associated nodes judges respectively path status priority and this node path status priority of path two end nodes in territory, if this node path status priority is higher than distant-end node path status priority, execution step 205, if this node path status priority, less than or equal to distant-end node path status priority, performs step 206;
Step 205, sends to corresponding distant-end node by the information that represents this node path status, execution step 207;
Step 206, sends NR state information to corresponding distant-end node, execution step 207;
In above-mentioned steps 205 and 206, represent that the path status information of the expression local path state such as information and NR state information of this node path status all adopts state negotiation packet to send, in the present embodiment, complete negotiation based on APS negotiation mechanism.
In other preferred embodiments, also can save step 204 and step 206, directly send to end node the information that represents cross-domain backup interlink node local path state.Now can complete negotiation based on PSC negotiation mechanism.
Step 207, the path status that the path status information that in territory, path two end nodes send according to cross-domain backup associated nodes detects in conjunction with this section point, selects the higher state executable operations of priority.
Aforesaid operations comprises any one of following operation: do not switch, switching, switchback.
Particularly, when the peer node on adjacent two territories receives after the path status information of cross-domain backup interlink node transmission, the priority of the path status detecting with this locality compares, if the priority of the path status that cross-domain backup interlink node sends is greater than the priority of the local path status detecting, select the path status executable operations of cross-domain backup interlink node; Otherwise, the path status executable operations detecting according to this locality.The destination path that business is switched depends on definite state, and for example, this state indication operating path fault, can be switched to Protection path by business, and this state indication Protection path fault, can be by service switchback to operating path.
With the network shown in Fig. 3, for cross-domain operating path A-B-D, configure a corresponding cross-domain Protection path A-C-D, on cross-domain backup interlink node C by two territories in Protection path A-C bind with C-D or associated.On cross-domain operating path, interconnected host node B breaks down in situation; carry out cross-domain service protection; business is switched on the cross-domain Protection path of this operating path, and Protection path C-D in cross-domain Protection path territory 2 also breaks down, and carries out the main process of protection and the recovery of cross-domain service:
Two end node A, the D in cross-domain path carry out the state-detection of territory upper pathway separately, and the state outcome that end node detects according to this locality selects the state of limit priority to send to as local path state on the peer node C of Protection path in territory; For situation shown in Fig. 3, its interlink node B and link C-D break down in situation simultaneously, there is SF-W(operating path signal fault in node A testing path), and for node D, detect that SF (Signal Failure all appears in operating path and Protection path, signal fault) information, due to SF-P(Protection path signal fault) priority is higher than SF-W, D can select highest priority state SF-P to send to backup interlink node C, and A sends SF-W state to C node;
When backup interlink node C receives after the state negotiation packet that cross-domain end node A, D send over, in adjacent domains, corresponding Protection path state is also as an input factor, select again a state that priority of status is the highest as local path state, for node C, it detects that Protection path C-D breaks down, receive respectively again the SF-W of node A transmission and the SF-P that node D sends, it selects SF-P as local path state;
The priority of status that backup interlink node C sends over local priority of status and distant-end node again compares, if local path priority of status is greater than the path status priority that distant-end node sends over, select local path state information by state negotiation packets such as APS or PSC, send to corresponding distant-end node, otherwise, select NR state information to notice to corresponding distant-end node; Because the path status of node C is SF-P, therefore, SF-P is sent to node A by it, and to node D send be NR state information;
Node A, D receive respectively after the state negotiation packet that backup interlink node C sends over, respectively this far-end priority of status (being the path status priority of node C) and this locality are detected to priority of status comparison, be SF-W for the local detected state of node A, and node C sends over SF-P, so node A selects SF-P to carry out switchback operation, because Protection path malfunctioning node A can select to be switched to operating path; And for node D, SF-P when this locality detects, C node sends over NR state information, so node D also can select SF-P to carry out switchback operation, same selection is switched to operating path, now node A and node D receive or transmission business from former operating path, as shown in Figure 6, have guaranteed the consistency of two end node transfer paths.
It should be noted that the fault of interlink node B may only cause partial service congested herein, switch back operating path and may not necessarily cause all service fails.
Embodiment 3
The present embodiment is described the node apparatus of realizing embodiment 1 method, and this node comprises cross-domain backup interlink node on the Protection path being positioned at across adjacent two territories, and as shown in Figure 7, this node apparatus comprises local path state determination module 301 and sending module 302, wherein:
Described local path state determination module 301, for the path status information that the end node on described adjacent two territories sends according to the path status of this section point detection and/or described Protection path, determine local path state, the path status information that described end node sends represents the path status that current end node detects;
Described sending module 302, for the described local path state of determining based on local path state determination module 301, sends the path status information that represents described local path state to end node.
In a preferential embodiment, above-mentioned node apparatus also comprises receiver module 303, the state negotiation packet that this receiver module 303 sends for receiving the end node of described Protection path on described adjacent two territories, carries the path status information of the path status that expression detects when front end node in described state negotiation packet; Above-mentioned sending module is for sending the path status information that represents described local path state to end node by state negotiation packet.
In a preferential embodiment, the path status information that the path status that local path state determination module 301 detects according to this section point and/or described end node send, selects the highest path status of priority as local path state.Specifically comprise one of following any situation:
The path status information of path status that the expression that the path status that local path state determination module 301 detects according to this section point and one or two end node send detects when front end node, selects path status that priority is the highest as local path state;
The path status that local path state determination module 301 detects according to this section point, selects the highest path status of priority as local path state;
The path status information of the path status that the expression that local path state determination module 301 sends according to one or two end node detects when front end node, selects path status that priority is the highest as local path state.
In a preferential embodiment, sending module 302 can adopt one of following any-mode to send the path status information that represents described local path state to end node:
Sending module 302 judges if originally the path status priority of cross-domain backup interlink node is less than or equal to the priority of end node path status, send NR state information to described end node, if the path status priority of this cross-domain backup interlink node of judgement, higher than the priority of end node path status, sends to described end node the information that represents described cross-domain backup interlink node local path state;
The information that represents this cross-domain backup interlink node local path state is sent to end node by sending module 302.
One of ordinary skill in the art will appreciate that all or part of step in said method can carry out instruction related hardware by program and complete, described program can be stored in computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuits.Correspondingly, the each module/unit in above-described embodiment can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (14)
1. a cross-domain path status machinery of consultation, comprising:
The path status information that the path status detecting according to this section point across the cross-domain backup interlink node on the Protection path in adjacent two territories and/or the described Protection path end node on described adjacent two territories sends, determine local path state, the path status information that described end node sends represents the path status that current end node detects;
Described cross-domain backup interlink node sends the path status information that represents described local path state to end node based on described local path state.
2. the method for claim 1, is characterized in that:
The path status information that the path status information that described end node sends and described cross-domain backup interlink node send is all carried in state negotiation packet.
3. method as claimed in claim 1 or 2, is characterized in that:
The path status information that the path status that described cross-domain backup interlink node detects according to this section point and/or described end node send, determines local path state, comprising:
The path status information that the path status that described cross-domain backup interlink node detects according to this section point and/or described end node send, selects the highest path status of priority as local path state.
4. method as claimed in claim 3, is characterized in that:
The path status information that the path status that described cross-domain backup interlink node detects according to this section point and/or described end node send, selects the highest path status of priority as local path state, comprising:
The path status information of path status that the expression that the path status that described cross-domain backup interlink node detects according to this section point and one or two end node send detects when front end node, selects path status that priority is the highest as local path state; Or
The path status that described cross-domain backup interlink node detects according to this section point, selects the highest path status of priority as local path state; Or
The path status information of the path status that the expression that described cross-domain backup interlink node sends according to one or two end node detects when front end node, selects path status that priority is the highest as local path state.
5. the method for claim 1, is characterized in that:
Described cross-domain backup interlink node sends the path status information that represents described local path state to end node based on described local path state, comprising:
If the path status priority of described cross-domain this cross-domain backup interlink node of backup interlink node judgement is less than or equal to the priority of end node path status, send without request (NR) state information to described end node, if the path status priority of this cross-domain backup interlink node of judgement, higher than the priority of end node path status, sends to described end node the information that represents described cross-domain backup interlink node local path state.
6. the method for claim 1, is characterized in that:
Described cross-domain backup interlink node sends the path status information that represents described local path state to end node based on described local path state, comprising:
The information that represents this cross-domain backup interlink node local path state is sent to end node.
7. the method as described in claim 5 or 6, is characterized in that:
Described method also comprises: business is in described cross-domain Protection path transmitting procedure; end node receives the path status information of the described local path state of expression of described cross-domain backup interlink node transmission; the priority of the local path state of more described cross-domain backup interlink node and the path status of this end points, selects the higher state executable operations of priority.
8. method as claimed in claim 7, is characterized in that:
Described operation comprises any one of following operation: do not switch, switching, switchback.
9. realize the node apparatus that cross-domain path status is consulted, described node apparatus is cross-domain backup interlink node on the Protection path being positioned at across adjacent two territories, and described node apparatus comprises: local path state determination module and sending module, wherein:
Described local path state determination module, for the path status information that the end node on described adjacent two territories sends according to the path status of this section point detection and/or described Protection path, determine local path state, the path status information that described end node sends represents the path status that current end node detects;
Described sending module, for the described local path state of determining based on local path state determination module, sends the path status information that represents described local path state to end node.
10. node apparatus as claimed in claim 9, is characterized in that:
Described node apparatus also comprises receiver module, the state negotiation packet that described receiver module sends for receiving the end node of described Protection path on described adjacent two territories, carries the path status information of the path status that expression detects when front end node in described state negotiation packet;
Described sending module, for sending the path status information that represents described local path state to end node by state negotiation packet.
11. node apparatus as described in claim 9 or 10, is characterized in that:
The path status information that the path status that described local path state determination module detects according to this section point and/or described end node send, determines local path state, comprising:
The path status information that the path status that described local path state determination module detects according to this section point and/or described end node send, selects the highest path status of priority as local path state.
12. node apparatus as claimed in claim 11, is characterized in that:
The path status information that the path status that described local path state determination module detects according to this section point and/or described end node send, selects the highest path status of priority as local path state, comprising:
The path status information of path status that the expression that the path status that described local path state determination module detects according to this section point and one or two end node send detects when front end node, selects path status that priority is the highest as local path state; Or
The path status that described local path state determination module detects according to this section point, selects the highest path status of priority as local path state; Or
The path status information of the path status that the expression that described local path state determination module sends according to one or two end node detects when front end node, selects path status that priority is the highest as local path state.
13. node apparatus as claimed in claim 9, is characterized in that:
Described sending module sends the path status information that represents described local path state to end node based on described local path state, comprising:
If the path status priority of described this cross-domain backup interlink node of sending module judgement is less than or equal to the priority of end node path status, send without request (NR) state information to described end node, if the path status priority of this cross-domain backup interlink node of judgement, higher than the priority of end node path status, sends to described end node the information that represents described cross-domain backup interlink node local path state.
14. node apparatus as claimed in claim 9, is characterized in that:
Described sending module sends the path status information that represents described local path state to end node based on described local path state, comprising:
The information that represents this cross-domain backup interlink node local path state is sent to end node by described sending module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210558890.9A CN103888280B (en) | 2012-12-20 | 2012-12-20 | A kind of cross-domain path status machinery of consultation and node apparatus |
| PCT/CN2013/089422 WO2014094575A1 (en) | 2012-12-20 | 2013-12-13 | Cross-domain path state negotiation method and node device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210558890.9A CN103888280B (en) | 2012-12-20 | 2012-12-20 | A kind of cross-domain path status machinery of consultation and node apparatus |
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| CN111565145A (en) * | 2020-04-09 | 2020-08-21 | 烽火通信科技股份有限公司 | Cross-domain path protection method and system |
| TWI710231B (en) * | 2020-02-27 | 2020-11-11 | 中華電信股份有限公司 | Path quality report method crossed over multiple centralized control plane |
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| CN105227461B (en) * | 2014-06-26 | 2020-03-10 | 中兴通讯股份有限公司 | Method for acquiring cross-domain separation path and path calculation unit |
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| CN111565145B (en) * | 2020-04-09 | 2022-07-01 | 烽火通信科技股份有限公司 | Cross-domain path protection method and system |
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| CN103888280B (en) | 2019-04-19 |
| WO2014094575A1 (en) | 2014-06-26 |
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