CN105490906A - Ring network protection method and device - Google Patents
Ring network protection method and device Download PDFInfo
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- CN105490906A CN105490906A CN201510896966.2A CN201510896966A CN105490906A CN 105490906 A CN105490906 A CN 105490906A CN 201510896966 A CN201510896966 A CN 201510896966A CN 105490906 A CN105490906 A CN 105490906A
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- ring
- looped network
- network node
- fault
- service aisle
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
- H04L12/437—Ring fault isolation or reconfiguration
-
- 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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention discloses a ring network protection method, and belongs to the field of communication. The method comprises the steps that: a ring network node detects whether a ring working channel has a fault; when detecting that the ring working channel has a fault, and when the ring network node is an upstream node of the fault in the ring working channel, the ring network node switches a service from the faulty ring working channel to a ring protection channel for transmission, and the directions of the ring working channel and the ring protection channel are opposite, so that a service message can be directly transmitted to a lower ring node by the ring protection channel, a very long transmission path is not generated just like in the prior art, the transmission delay of the service message is shortened, the resource occupancy is reduced, and meanwhile, the abovementioned method can be used for shortening the switching time of ring network protection.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of ring net protection method and device.
Background technology
Based on MPLS-TP (MultiProtocolLabelSwitching-TransportProfile; multiprotocol label switching transmission standard) PTN (PacketTransportNetwork, the Packet Transport Network) looped network protection of technology is mainly divided into Wrapping and Steering looped network protection.
Wherein, traditional Wrapping looped network protection mechanism is when monitoring fault; the business of carrying is switched to reverse protection passage from service aisle by fault (node failure or link failure) upstream node (upstream node that fault place is adjacent); fault down stream node (downstream node that fault place is adjacent) is when receiving the bearer service of fault upstream node by reverse protection channel transfer; reverse protection passage bridge is returned service aisle, continues to be sent to lower link point along service aisle.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
In traditional Wrapping looped network protection mechanism; service transmission path is long; cause the propagation delay time of business increase and can take additional transmission resources, simultaneously because two nodes that fault is adjacent have all needed switching, what add looped network protection switches the deadline.
Summary of the invention
In order to solve the problem of prior art, embodiments provide a kind of ring net protection method and device.Described technical scheme is as follows:
First aspect, embodiments provides a kind of ring net protection method, and described method comprises:
Whether looped network node detection ring service aisle exists fault;
When detecting in described ring service aisle to there is fault; and described looped network node is when being the upstream node of fault in described ring service aisle; business is switched to ring protection passage from the ring service aisle of fault and transmits by described looped network node, and described ring service aisle is contrary with described ring protection channel direction.
In a kind of implementation of the embodiment of the present invention, whether described looped network node detection ring service aisle exists fault, comprising:
Whether described looped network node, by the state of ring service aisle described in operation management maintain OAM system monitoring, exists fault to detect described ring service aisle.
In the another kind of implementation of the embodiment of the present invention, business is switched to ring protection passage from the ring service aisle of fault and transmits by described looped network node, comprising:
The ring work tap of the service message of described business is replaced with ring protection label by described looped network node;
Described service message after replacement is sent to the next-hop node on described ring protection passage by described looped network node.
In the another kind of implementation of the embodiment of the present invention, described method also comprises:
When described looped network node is intermediate node, the ring protection label of described looped network node to described service message carries out Tag switching, and the described service message after Tag switching is sent to the next-hop node on described ring protection passage;
When described looped network node is lower link point, described looped network node downloads described service message from described ring protection passage.
In the another kind of implementation of the embodiment of the present invention, described method also comprises:
Described looped network node configures described ring service aisle and described ring protection passage.
Second aspect, the embodiment of the present invention additionally provides a kind of looped network protection device, and described device comprises:
Whether detecting unit, exist fault for detecting ring service aisle residing for looped network node;
Transmission unit; for detecting in described ring service aisle to there is fault when described detecting unit; and described looped network node is when being the upstream node of fault in described ring service aisle; business is switched to ring protection passage from the ring service aisle of fault transmit, described ring service aisle is contrary with described ring protection channel direction.
In a kind of implementation of the embodiment of the present invention, described detecting unit, specifically for:
By the state of ring service aisle described in operation management maintain OAM system monitoring, whether there is fault to detect described ring service aisle.
In the another kind of implementation of the embodiment of the present invention, described transmission unit, specifically for:
The ring work tap of the service message of described business is replaced with ring protection label;
Described service message after replacement is sent to the next-hop node on described ring protection passage.
In the another kind of implementation of the embodiment of the present invention, described transmission unit, also for:
When described looped network node is intermediate node, Tag switching is carried out to the ring protection label of described service message, and the described service message after Tag switching is sent to the next-hop node on described ring protection passage;
When described looped network node is lower link point, download described service message from described ring protection passage.
In the another kind of implementation of the embodiment of the present invention, described device also comprises:
Dispensing unit, for configuring described ring service aisle and described ring protection passage on described looped network node.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
Whether the embodiment of the present invention exists fault by looped network node detection ring service aisle, when detecting in ring service aisle to there is fault, and looped network node is when being the upstream node of fault in ring service aisle, business is switched to ring protection passage from the ring service aisle of fault and transmits by looped network node, ring service aisle is contrary with ring protection channel direction, thus make service message can directly be transferred to lower link point by ring protection passage, and avoid produce very long transmission path as prior art, reduce the propagation delay time of service message, reduce resource occupation, aforesaid way can reduce the switching time of looped network protection simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of a kind of ring net protection method that the embodiment of the present invention provides;
Fig. 2 is the flow chart of a kind of ring net protection method that the embodiment of the present invention provides;
Fig. 2 a is a kind of ring network structure schematic diagram that the embodiment of the present invention provides;
Fig. 2 b is a kind of ring network structure schematic diagram that the embodiment of the present invention provides;
Fig. 2 c is a kind of ring network structure schematic diagram that the embodiment of the present invention provides;
Fig. 3 is the structural representation of a kind of looped network protection device that the embodiment of the present invention provides.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Fig. 1 is the flow chart of a kind of ring net protection method that the embodiment of the present invention provides, and the method can by the node in PTN looped network, or module on node or device perform, and see Fig. 1, the method comprises:
Step 101: whether looped network node detection ring service aisle exists fault.
Wherein, ring service aisle fault mainly comprises node failure and inter-node link fault two kinds.
Step 102: when detecting in ring service aisle to there is fault; and looped network node is when being the upstream node of fault in ring service aisle; business is switched to ring protection passage from the ring service aisle of fault and transmits by looped network node, and ring service aisle is contrary with ring protection channel direction.
Wherein, the upstream node of fault refers to the upstream node adjacent with fault place.
Whether the embodiment of the present invention exists fault by looped network node detection ring service aisle, when detecting in ring service aisle to there is fault, and looped network node is when being the upstream node of fault in ring service aisle, business is switched to ring protection passage from the ring service aisle of fault and transmits by looped network node, ring service aisle is contrary with ring protection channel direction, thus make service message can directly be transferred to lower link point by ring protection passage, and avoid produce very long transmission path as prior art, reduce the propagation delay time of service message, reduce resource occupation, aforesaid way can reduce the switching time of looped network protection simultaneously.
Fig. 2 is the flow chart of a kind of ring net protection method that the embodiment of the present invention provides, and the method can by the node in PTN looped network, or module on node or device perform, and see Fig. 2, the method comprises:
Step 200: configure ring service aisle and ring protection passage on looped network node, ring service aisle is contrary with ring protection channel direction.
Wherein, configuration ring service aisle and ring protection passage mainly preserve the information of ring service aisle and the information of ring protection passage, and the information of ring service aisle or the information of ring protection passage comprise the mark of each node of process successively.
Particularly, because each node in looped network all as lower link point (namely service message leaves the node of looped network), therefore all can set up a minimum ring service aisle and ring protection passage for each node.
Such as, for the looped network shown in Fig. 2 a, it comprises A, B, C, D, E, F six nodes.For lower link point D; ring service aisle RcW_D:E->F->A-GreatT.GreaT.G TB->C->D can be set up, and ring protection passage RaP_D:C->B->A-GreatT.GreaT.G TF->E->D.When the information of the information of storage ring service aisle or ring protection passage, can the node identification of the name of storage ring service aisle or ring protection passage and its process successively.
Under normal circumstances, the course of work of PTN looped network is as follows:
As shown in Figure 2 b, business is from network node A pressed on ring, at pressed on ring node A, business is packaged into the pattern of ring channel transfer business, the i.e. packed PW label of service message, encapsulation tunnel label (LSP) and packaging ring work tap, after encapsulation, form is as follows: RcW_D (B) | LSP|PW| business.Node B and node C carry out Tag switching to ring label, carry out being encapsulated as RcW_D (C) after Tag switching through Node B | LSP|PW| business, carry out being encapsulated as RcW_D (D) after Tag switching through node C | LSP|PW| business.When service message arrives node D, node D ejects ring work tap, downloading service after tunnel label and PW label.For RcW_D (B), ring work tap comprises ring service aisle title RcW_D and next-hop node (B).Wherein, for RcW_D, ring service aisle title comprises identification rings service aisle and is clockwise mark c (can identify with a counterclockwise), identifies the mark W (ring protection passage can identify with P) that this passage is ring service aisle.
Certainly, the direction of ring service aisle and ring protection passage can also be exchanged when specific implementation.
Step 201: whether looped network node, by the state of OAM (OperationAdministrationMaintenance, operation management maintain) system monitoring ring service aisle, exists fault with detection ring service aisle.
OAM, by the connectedness of ring service aisle between monitoring adjacent node, with this detection node or inter-node link whether fault, thus determines whether to need to trigger looped network protection.
Step 202: when detecting in ring service aisle to there is fault, and when looped network node is the upstream node of fault in ring service aisle, the ring work tap of the service message of business is replaced with ring protection label by looped network node.
Step 203: the service message after replacement is sent to the next-hop node on ring protection passage by looped network node.
Wherein, the next-hop node on ring protection passage is downstream node adjacent on ring protection passage.
Above-mentioned steps 202 and 203 is transmitted for business is switched to ring protection passage from the ring service aisle of fault.
Further, the method also comprises:
When looped network node is intermediate node, the ring protection label of looped network node to service message carries out Tag switching, and the service message after Tag switching is sent to the next-hop node on ring protection passage;
When looped network node is lower link point, looped network node downloads service message from ring protection passage.
Wherein, intermediate node is ring protection passage is in the node between the upstream node of fault and lower link point.
Such as, for Fig. 2 c, if link occurs fault between figure interior joint C or node C and B, Node B detects ring service aisle fault, and Node B is the upstream node of fault in ring service aisle, triggers looped network protection.The ring work tap of business is modified to ring protection label RaP_D (A) by Node B, guard ring channel transfer along this direction: A->F->E->D, node A, F, E, D to ring protection label carry out Tag switching (RaP_D (A) | LSP|PW| business->RaP_D (F) | LSP|PW| business->RaP_D (E) | LSP|PW| business->RaP_D (D) | LSP|PW| business), lower link point D is from ring protection passage downloading service.For RaP_D (A), ring work tap comprises ring protection tunnel name RaP_D and next-hop node (A).Wherein, for RaP_D, ring protection tunnel name comprises identification rings protection channel and is anticlockwise mark a, identifies the mark P that this passage is ring protection passage.
In embodiments of the present invention, the label all just exemplary illustration of above-mentioned ring work tap and ring protection passage, not as the restriction to invention.
Nodes, topological diagram and ring label in above-mentioned accompanying drawing and example be exemplary illustration all just, and not as to the restriction of inventing, technical scheme proposed by the invention is applicable to the network topology of various annular networking.
In embodiments of the present invention; the passage transmission of synchronization service message only in ring service aisle or ring protection passage; lower link point in looped network is from ring service aisle or ring protection passage downloading service, and each node protects agreement without the need to running APS (APS).
In embodiments of the present invention, business can be all business be carried in PTN network, as speech business, data service and video traffic.
Whether the embodiment of the present invention exists fault by looped network node detection ring service aisle, when detecting in ring service aisle to there is fault, and looped network node is when being the upstream node of fault in ring service aisle, business is switched to ring protection passage from the ring service aisle of fault and transmits by looped network node, ring service aisle is contrary with ring protection channel direction, thus make service message can directly be transferred to lower link point by ring protection passage, and avoid produce very long transmission path as prior art, reduce the propagation delay time of service message, reduce resource occupation, aforesaid way can reduce the switching time of looped network protection simultaneously.
Fig. 3 is the structural representation of a kind of looped network protection device that the embodiment of the present invention provides, the ring net protection method that this device provides for performing Fig. 1 or Fig. 2, the device that this device can be node in PTN looped network or be arranged on node, and this device comprises:
Whether detecting unit 301, exist fault for detecting ring service aisle residing for looped network node;
Transmission unit 302; for detecting in ring service aisle to there is fault when detecting unit; and looped network node is when being the upstream node of fault in ring service aisle, business is switched to ring protection passage from the ring service aisle of fault and transmits, ring service aisle is contrary with ring protection channel direction.
Alternatively, detecting unit 301, specifically for:
By the state of operation management maintain OAM system monitoring ring service aisle, whether there is fault with detection ring service aisle.
Alternatively, transmission unit 302, specifically for:
The ring work tap of the service message of business is replaced with ring protection label;
Service message after replacement is sent to the next-hop node on ring protection passage.
Alternatively, transmission unit 302, also for:
When looped network node is intermediate node, Tag switching is carried out to the ring protection label of service message, and the service message after Tag switching is sent to the next-hop node on ring protection passage;
When looped network node is lower link point, download service message from ring protection passage.
Alternatively, this device also comprises:
Dispensing unit 303, for configuring ring service aisle and ring protection passage on looped network node.
Whether the embodiment of the present invention exists fault by looped network node detection ring service aisle, when detecting in ring service aisle to there is fault, and looped network node is when being the upstream node of fault in ring service aisle, business is switched to ring protection passage from the ring service aisle of fault and transmits by looped network node, ring service aisle is contrary with ring protection channel direction, thus make service message can directly be transferred to lower link point by ring protection passage, and avoid produce very long transmission path as prior art, reduce the propagation delay time of service message, reduce resource occupation, aforesaid way can reduce the switching time of looped network protection simultaneously.
It should be noted that: the looped network protection device that above-described embodiment provides is when carrying out looped network protection; only be illustrated with the division of above-mentioned each functional module; in practical application; can distribute as required and by above-mentioned functions and be completed by different functional modules; internal structure by equipment is divided into different functional modules, to complete all or part of function described above.In addition, the looped network protection device that above-described embodiment provides and ring net protection method embodiment belong to same design, and its specific implementation process refers to embodiment of the method, repeats no more here.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a ring net protection method, is characterized in that, described method comprises:
Whether looped network node detection ring service aisle exists fault;
When detecting in described ring service aisle to there is fault; and described looped network node is when being the upstream node of fault in described ring service aisle; business is switched to ring protection passage from the ring service aisle of fault and transmits by described looped network node, and described ring service aisle is contrary with described ring protection channel direction.
2. method according to claim 1, is characterized in that, whether described looped network node detection ring service aisle exists fault, comprising:
Whether described looped network node, by the state of ring service aisle described in operation management maintain OAM system monitoring, exists fault to detect described ring service aisle.
3. method according to claim 1, is characterized in that, business is switched to ring protection passage from the ring service aisle of fault and transmits by described looped network node, comprising:
The ring work tap of the service message of described business is replaced with ring protection label by described looped network node;
Described service message after replacement is sent to the next-hop node on described ring protection passage by described looped network node.
4. method according to claim 3, is characterized in that, described method also comprises:
When described looped network node is intermediate node, the ring protection label of described looped network node to described service message carries out Tag switching, and the described service message after Tag switching is sent to the next-hop node on described ring protection passage;
When described looped network node is lower link point, described looped network node downloads described service message from described ring protection passage.
5. the method according to any one of Claims 1-4, is characterized in that, described method also comprises:
Described looped network node configures described ring service aisle and described ring protection passage.
6. a looped network protection device, is characterized in that, described device comprises:
Whether detecting unit, exist fault for detecting ring service aisle residing for looped network node;
Transmission unit; for detecting in described ring service aisle to there is fault when described detecting unit; and described looped network node is when being the upstream node of fault in described ring service aisle; business is switched to ring protection passage from the ring service aisle of fault transmit, described ring service aisle is contrary with described ring protection channel direction.
7. device according to claim 6, is characterized in that, described detecting unit, specifically for:
By the state of ring service aisle described in operation management maintain OAM system monitoring, whether there is fault to detect described ring service aisle.
8. device according to claim 6, is characterized in that, described transmission unit, specifically for:
The ring work tap of the service message of described business is replaced with ring protection label;
Described service message after replacement is sent to the next-hop node on described ring protection passage.
9. device according to claim 8, is characterized in that, described transmission unit, also for:
When described looped network node is intermediate node, Tag switching is carried out to the ring protection label of described service message, and the described service message after Tag switching is sent to the next-hop node on described ring protection passage;
When described looped network node is lower link point, download described service message from described ring protection passage.
10. the device according to any one of claim 6 to 9, is characterized in that, described device also comprises:
Dispensing unit, for configuring described ring service aisle and described ring protection passage on described looped network node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510896966.2A CN105490906A (en) | 2015-12-07 | 2015-12-07 | Ring network protection method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510896966.2A CN105490906A (en) | 2015-12-07 | 2015-12-07 | Ring network protection method and device |
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| CN105490906A true CN105490906A (en) | 2016-04-13 |
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| CN201510896966.2A Pending CN105490906A (en) | 2015-12-07 | 2015-12-07 | Ring network protection method and device |
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| CN107528759A (en) * | 2016-06-22 | 2017-12-29 | 中兴通讯股份有限公司 | Method for processing business, business go out link point and looped network |
| CN107682192A (en) * | 2017-10-08 | 2018-02-09 | 许昌学院 | A kind of method of county domain power supply station data communication |
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| CN102571534A (en) * | 2010-12-21 | 2012-07-11 | 中兴通讯股份有限公司 | Service transmission method based on ring network protection and node used for service transmission |
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| CN107528759A (en) * | 2016-06-22 | 2017-12-29 | 中兴通讯股份有限公司 | Method for processing business, business go out link point and looped network |
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