CN100461737C - Resilient grouping ring node internal connection fault handling method and device - Google Patents

Resilient grouping ring node internal connection fault handling method and device Download PDF

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CN100461737C
CN100461737C CNB2007100867223A CN200710086722A CN100461737C CN 100461737 C CN100461737 C CN 100461737C CN B2007100867223 A CNB2007100867223 A CN B2007100867223A CN 200710086722 A CN200710086722 A CN 200710086722A CN 100461737 C CN100461737 C CN 100461737C
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span
node
ring
generate
link
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CN101022389A (en
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王越
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0677—Localisation of faults
    • 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

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Abstract

本发明提供了一种弹性分组环(RPR)节点内部连接故障处理方法，该方法包括：RPR环上的第一节点检测到内部连接故障时，由当前RPR环的链路状态信息得到链路分析结果；根据链路分析结果从第一节点的两个段(SPAN)中选择第一SPAN模拟生成信号失败(SF)，并向环上其它节点发送SF信号，且选择第一SPAN模拟生成SF时SF信号传输的节点数大于选择第二SPAN模拟生成SF时SF信号传输的节点数。另外，本发明还提供了一种弹性分组环节点内部连接故障处理装置，包括：存储单元和处理单元。本发明能够在RPR节点出现内部连接故障的情况下，最大限度地保证环网的连通性和可用性。

Figure 200710086722

The present invention provides a method for processing an internal connection failure of a resilient packet ring (RPR) node, the method comprising: when the first node on the RPR ring detects an internal connection failure, link analysis is obtained from the link state information of the current RPR ring Result: Select the first SPAN from the two segments (SPAN) of the first node to simulate the signal failure (SF) according to the link analysis results, and send the SF signal to other nodes on the ring, and select the first SPAN to simulate the generation of SF The number of nodes for SF signal transmission is greater than the number of nodes for SF signal transmission when the second SPAN simulation is selected to generate SF. In addition, the present invention also provides an RPR node internal connection fault processing device, including: a storage unit and a processing unit. The invention can ensure the connectivity and availability of the ring network to the greatest extent when the internal connection failure of the RPR node occurs.

Figure 200710086722

Description

Elastic packet link point internal connection fault processing method and device
Technical field
The present invention relates to the network communications technology, relate in particular to Resilient Packet Ring (RPR, Resilient PacketRing) intra-node and connect fault handling method and device.
Background technology
RPR is a kind of networking structure of reverse twin nuclei, can be on two rings Data transmission simultaneously, as a kind of new metropolitan area network standard, because it is in the advantage of all many-sides such as interface bandwidth, carrier-class disturbance switching ability, high efficient band width utilance, physical layer have nothing to do, RPR is subjected to the favor of more and more operators gradually.
RPR ring referring to shown in Figure 1 comprises 6 RPR nodes on the ring, the clockwise monocycle in the outside is called 0 ring, and inboard anticlockwise monocycle is called 1 ring; The link section of being called (SPAN) between two adjacent R PR nodes, a SPAN is made up of the opposite one way link of a pair of direction; For each node, two SPAN are arranged, be called the west to SPAN and east orientation SPAN, wherein, the west is used to receive 0 loop data and sends 1 loop data to SPAN, and east orientation SPAN is used to receive 1 loop data and sends 0 loop data.
The fault self-recovery ability of RPR is very strong, can realize that the error protection in the 50ms time is switched.Owing to fault disconnects the RPR ring of connection,, can make all data flow avoid hindering for some reason and the link that disconnects referring to shown in Figure 2, realize the normal transmission of data flow through quick troubleshooting.Among Fig. 2, the SPAN that can not be used to transmit data is called the limit.Link failure has multiple situation, comprises Signal Fail (SF, Signal Fail) and Signal Degrade (SD, Signal degrade) etc.Wherein, the SF fault is the most serious, is bound to generate the limit, as fibercuts; SD represents that line quality is relatively poor, but can transmit data, can generate the limit under the certain condition.
In order to realize quick protective switch, each node all detects the state of self SPAN in real time on the RPR ring, and obtains the state that ring is gone up other SPAN by other node information releasing.When detecting variation, carry out analyzing and processing according to all data of having collected, make reaction fast.
At a RPR intranodal, east orientation SPAN may be distributed on the different hardware with the transmitting-receiving processing capacity of west to SPAN, and it is inner by optical fiber or cable connection.It also is the part of RPR ring that this inside connects, if inner the connection breaks down, can cause the fracture of RPR ring equally.
But at present to pay close attention to maximum be fault on the SPAN to agreement, and the processing that connects fault for the RPR intra-node is then too simple.Such as, be modeled as the west simply and SF take place to SPAN, perhaps be modeled as east orientation SPAN SF takes place, perhaps be modeled as two SPAN SF has all taken place.According to such processing method, connect fault if occur the RPR intra-node in actual applications, then under a stable condition, may cause serious accident.Simple example is: there has been the SF fault in the west of supposing node A and has generated the limit to SPAN, inner connection fault takes place after, generate SF if just choose at random east orientation SPAN simulation, then the result who handles like this is, two SPAN of node A generate the limit, all can not send data, and node A has disconnected from encircling fully, thereby damaged the connectedness of looped network, caused looped network unavailable fully.
Summary of the invention
The main purpose of the embodiment of the invention is to provide a kind of RPR intra-node to connect fault handling method and device, occurs at the RPR node guaranteeing the connectedness and the availability of looped network to greatest extent under the situation of inner connection fault.
For achieving the above object, it is as follows that RPR intra-node provided by the invention connects fault handling method:
When the first node on the RPR ring detected inside connection fault, the link-state information of being encircled by current RPR obtained the link analysis result;
From two section SPAN of first node, select SPAN simulation to generate Signal Fail SF according to the link analysis result, and go up other node to ring and send the SF signal, and the node number of the node number of SF signal transmission when selecting SPAN simulation to generate SF SF signal transmission when selecting the 2nd SPAN simulation to generate SF.
Described link analysis result is: first node has SPAN to generate the limit;
Describedly select SPAN simulation to generate SF from two SPAN of first node according to the link analysis result to comprise: the SPAN simulation of selecting to have generated the limit from two SPAN of first node generates SF.
Described link analysis result is: boundless but node that ring is gone up except that first node has SPAN to generate the limit among two SPAN of first node, and perhaps both boundless also fault-free but node that ring is gone up except that first node has SPAN generation limit among two of first node SPAN; Describedly select SPAN simulation to generate SF from two SPAN of first node according to the link analysis result to comprise: the nearest SPAN simulation in the limit from two SPAN of first node on the chosen distance ring generates SF.
Described link analysis result is: boundless but have SPAN to have fault among two SPAN of first node, it is all boundless but first node has SPAN to have fault that perhaps ring is gone up the SPAN of all nodes; Describedly from two SPAN of first node, select SPAN simulation to generate SF according to the link analysis result to comprise: from two SPAN of first node, select to exist the SPAN simulation of fault to generate SF.
Described link analysis result is: all boundless and first node of the SPAN of all nodes does not have SPAN and has fault on the ring, but the node that ring is gone up except that first node has SPAN to have fault; Describedly select SPAN simulation to generate SF from two SPAN of first node according to the link analysis result to comprise: the chosen distance ring exists the nearest SPAN simulation of link of fault to generate SF from two SPAN of first node.
This method further comprises: do not have the SF fault when detecting selecteed SPAN, and another SPAN of non-selected first node is when existing the SF fault, simulates selecteed SPAN and go up SF and disappear, and select another SPAN simulation of first node to generate SF.
RPR intra-node provided by the invention connects fault treating apparatus and comprises: memory cell and processing unit, wherein,
Memory cell, the link-state information that is used to store the RPR ring;
Processing unit, be used for when connection fault in inside takes place node, obtain RPR loop chain line state information from memory cell, obtain the link analysis result by link-state information, from two section SPAN that inner connection malfunctioning node takes place, select SPAN simulation to generate Signal Fail SF according to the link analysis result, and go up other node to ring and send the SF signal, and the node number of the node number of SF signal transmission when selecting SPAN simulation to generate SF SF signal transmission when selecting the 2nd SPAN simulation to generate SF.
Described processing unit comprises: acquiring unit, selected cell and transmitting element, wherein, acquiring unit, be used for when connection fault in inside takes place node, obtain RPR loop chain line state information from memory cell, obtain the link analysis result by link-state information, and the link analysis result is sent to selected cell; Selected cell is used for selecting SPAN simulation to generate SF according to the link analysis result who receives from inner two SPAN that connect malfunctioning node take place, and the SF information that generates is sent to transmitting element; Transmitting element is used for going up other node according to the SF information of receiving to ring and sends the SF signal.
Described processing unit further comprises: updating block, be used for not having the SF fault detecting a selecteed SPAN, and non-selected the 2nd SPAN is when existing the SF fault, and simulate a SPAN and go up SF and disappear, and select the 2nd SPAN simulation to generate SF.
This shows, in an embodiment of the present invention, when detecting the inner connection of RPR node generation fault, not careless to select a SPAN simulation to generate SF, but need from two SPAN that the inner node that connects fault takes place, select a SPAN simulation to generate SF according to the Link State of RPR ring.Such as, from two SPAN that inner connection malfunctioning node takes place, the SPAN simulation of selecting to have generated the limit or existing fault may generate the limit generates SF, perhaps chosen distance has encircled the nearest SPAN simulation of link that generates the limit or exist fault may generate the limit and has generated SF, to guarantee that the inner node that connects fault occurring can connect together with node as much as possible.Like this, just can under the situation that intra-node connection fault occurs, guarantee the connectedness and the availability of looped network to greatest extent, make looped network that service more reliably is provided.
Description of drawings
Fig. 1 is a RPR ring schematic diagram of the prior art.
Fig. 2 breaks the RPR ring schematic diagram of connection for prior art.
Fig. 3 is the process flow figure that the RPR intra-node connects fault in the embodiment of the invention.
Fig. 4 changes the flow chart that the SPAN simulation generates SF in the embodiment of the invention.
Fig. 5 is that the RPR intra-node in the embodiment of the invention connects the fault treating apparatus structural representation.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, the embodiment that develops simultaneously with reference to the accompanying drawings is described in further detail the present invention.
The RPR intra-node that the embodiment of the invention provides connects fault handling method and mainly comprises: when the first node on the RPR ring detected inside connection fault, the link-state information of being encircled by current RPR obtained the link analysis result; And from two SPAN of first node, select SPAN simulation to generate SF according to the link analysis result, go up other node to ring then and send the SF signal, and, the node number of SF signal transmission when the node number of SF signal transmission generates SF greater than selection the 2nd SPAN simulation when selecting SPAN simulation to generate SF.
That is to say that when connection fault in inside takes place the node on the RPR ring, need select SPAN simulation generation SF in conjunction with the current link-state information of RPR ring, the inner node that connects fault occurring with assurance can connect together with node as much as possible.Like this, just can occur guaranteeing the connectedness and the availability of looped network to greatest extent under the situation of inner connection fault, make looped network that service more reliably is provided at node.
Wherein, the Link State of described RPR ring had both comprised the state of two SPAN of the node that inner connection fault takes place, comprised that also it is the state of other SPAN that ring is gone up other link.Each node on the RPR ring all detects the state of self SPAN in real time, and obtains the state that ring is gone up other SPAN by other node information releasing.Link State comprises specifically whether link has generated the limit, whether link exists information such as fault.
Wherein, link analysis is the result comprise: among two SPAN of first node whether limit or fault are arranged, whether other node on the ring except that first node has limit or fault etc.
Below in conjunction with Fig. 3 RPR intra-node provided by the invention is connected fault handling method and be elaborated, referring to shown in Figure 3, this method mainly may further comprise the steps:
Each node on the step 301:RPR ring detects the inside connection status of self in real time, when first node detect self take place inner connect fault after, then check the link-state information of RPR ring, and judge among two SPAN of this node whether the limit is arranged, if have, then execution in step 302; Otherwise, execution in step 303.
Step 302: the SPAN simulation of selecting to have generated the limit from two SPAN of first node generates SF, the processing of process ends then.
Because this SPAN has been the limit, therefore select this SPAN simulation to generate the change in topology that SF can not cause the RPR ring, can not exert an influence to the transmission that encircles data flow.
If two SPAN of first node are the limits, then can select any one SPAN simulation wherein to generate SF.
Step 303: first node is gone up other node information releasing according to ring can know the upward state of other link of ring, and judges in view of the above ring goes up in other the link whether the limit is arranged, if having, then execution in step 304; Otherwise, execution in step 305.
Step 304: the nearest SPAN simulation in the limit from two SPAN of first node on the chosen distance ring generates SF, the processing of process ends then.
Wherein, the nearest SPAN in limit on the described rang ring is meant the SPAN that can arrive that direction on limit through the shortest jumping figure.Such as in Fig. 1, if inner connection fault takes place node A, and does not all have the limit among two SPAN of known node, the west of Node B generates the limit to SPAN, then node A will select the west of self to generate SF to the SPAN simulation this moment, because the west of node A is nearest to SPAN from the west of Node B to SPAN.Such system of selection can make the node of the inner connection of generation fault and node as much as possible link together, and realizes the raising of looped network connectedness.
Step 305: first node judges whether two SPAN of this node exist fault, if exist, then execution in step 306; Otherwise, execution in step 307.
Step 306: first node selects to exist the SPAN simulation of fault to generate SF, the processing of process ends then from two SPAN of this node.
If there is fault in two SPAN of first node, then can select any one SPAN simulation wherein to generate SF, because exist the SPAN of fault all might generate the limit.
Step 307: first node judges whether exist fault, if exist, then execution in step 308 if encircling the link of going up other; Otherwise, execution in step 309.
Step 308: first node exists the link of fault recently, promptly can arrive this SPAN that has faulty link simulation generation SF, processing of process ends then through the shortest jumping figure from two SPAN of this node on the chosen distance ring.
Step 309: both boundless, also do not have any fault if in all links on ring, then first node can select a SPAN to simulate generation SF, the processing of process ends then from two SPAN of this node arbitrarily.
After simulation generated SF, first node can be given this information broadcast other node on the ring, made data flow no longer transmit by the SPAN of this simulation generation SF, to guarantee the availability of looped network.
Need to prove, in the step 301 when first node judge among self two SPAN boundless after, can first execution in step 305; Execution in step 303 again after step 305 draws negative judged result; Execution in step 307 again after step 303 draws negative judged result.That is to say whether first node is judged earlier among two SPAN of this node has the limit or whether have fault, whether under the both boundless also trouble-free situation of two SPAN of this node, judging on the ring has the limit or whether have fault in other link again.
And after step 301,303 or 305 drew negative judged result, first node also can directly select a SPAN simulation to generate SF from two SPAN of this node arbitrarily, and the processing of process ends.
As seen, in the present embodiment, taking place innerly when connecting fault when detecting the RPR node, is not at will to select a SPAN simulation to generate SF, but need select a SPAN simulation to generate SF from two SPAN that the inner node that connects fault takes place according to the Link State of RPR ring.Such as, from two SPAN that inner connection malfunctioning node takes place, the SPAN simulation of selecting to have generated the limit or existing fault may generate the limit generates SF, perhaps chosen distance has encircled the nearest SPAN simulation of link that generates the limit or exist fault may generate the limit and has generated SF, to guarantee that the inner node that connects fault occurring can connect together with node as much as possible.Like this, just can under the situation that intra-node connection fault occurs, guarantee the connectedness and the availability of looped network to greatest extent, make looped network that reliable service is provided.
In addition,, make looped network that more reliable service can be provided in order to guarantee to simulate the accuracy that generates SF, after certain SPAN of simulation generates SF, can also be in real time according to the variation of ring network topology information and Link State, the SPAN that simulation is generated SF changes.
Detecting the situation that the SPAN state of this node changes with first node below is example, is elaborated to changing the process that the SPAN simulation generates SF.Referring to shown in Figure 4, this process mainly may further comprise the steps:
Step 401: first node detects the state of two SPAN of this node in real time, and judges whether to detect variation, if then execution in step 402; Otherwise, the processing of process ends.
Step 402: first node judges self whether there is the inner fault that connects, if then execution in step 403; Otherwise, the processing of process ends.
Step 403: whether the SPAN of selected simulation generation SF really existed the SF fault at present when the first node judgement connected fault in processing inside before, if, the then processing of process ends; Otherwise, execution in step 404.
Step 404: first node judges whether another SPAN (for the SPAN that the simulation of selecting before generates SF) of this node exists the SF fault, if then execution in step 405; Otherwise, the processing of process ends.
Step 405: the SPAN that selects before the first node simulation goes up SF and disappears, and selects another SPAN simulation to generate SF.
In addition, corresponding RPR intra-node provided by the invention connects fault handling method, and the present invention also provides a kind of RPR intra-node to connect fault treating apparatus.Referring to shown in Figure 5, this device comprises: memory cell and processing unit.Wherein, memory cell, the link-state information that is used to store the RPR ring; Processing unit, be used for when connection fault in inside takes place the RPR node, obtain RPR loop chain line state information from memory cell, obtain the link analysis result by link-state information, from two SPAN that inner connection malfunctioning node takes place, select SPAN simulation to generate SF according to the link analysis result, and go up other node to ring and send the SF signal, and the node number of the node number of SF signal transmission when selecting SPAN simulation to generate SF SF signal transmission when selecting the 2nd SPAN simulation to generate SF.
Described processing unit specifically can comprise: acquiring unit, selected cell and transmitting element.Wherein, acquiring unit is used for obtaining RPR loop chain line state information from memory cell when connection fault in inside takes place node, obtains the link analysis result by link-state information, and the link analysis result is sent to selected cell; Selected cell is used for selecting SPAN simulation to generate SF according to the link analysis result who receives from inner two SPAN that connect malfunctioning node take place, and the SF information that generates is sent to transmitting element; Transmitting element is used for going up other node according to the SF information of receiving to ring and sends the SF signal.
In addition, described processing unit can further comprise: updating block be used for not having the SF fault detecting a described selecteed SPAN, and non-selected the 2nd SPAN is when existing the SF fault, simulate a SPAN and go up the SF disappearance, and select the 2nd SPAN simulation to generate SF.
The above has carried out further detailed description to purpose of the present invention, technical scheme and beneficial effect; institute is understood that; the above is not in order to restriction the present invention; within the spirit and principles in the present invention all; any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (11)

1.一种弹性分组环RPR节点内部连接故障处理方法，其特征在于，该方法包括：1. a resilient packet ring RPR node internal connection failure processing method, is characterized in that, the method comprises: RPR环上的第一节点检测到内部连接故障时，由当前RPR环的链路状态信息得到链路分析结果；When the first node on the RPR ring detects an internal connection failure, the link analysis result is obtained from the link state information of the current RPR ring; 根据链路分析结果从第一节点的两个段SPAN中选择第一SPAN模拟生成信号失败SF，并向环上其它节点发送SF信号，且选择第一SPAN模拟生成SF时SF信号传输的节点数大于选择第二SPAN模拟生成SF时SF信号传输的节点数。According to the link analysis results, select the first SPAN from the two segment SPANs of the first node to simulate the signal failure SF, and send the SF signal to other nodes on the ring, and select the number of nodes that the SF signal transmits when the first SPAN simulates the generated SF It is greater than the number of nodes for SF signal transmission when the second SPAN simulation is selected to generate SF. 2.根据权利要求1所述的方法，其特征在于，所述链路分析结果为：第一节点有SPAN生成边；2. The method according to claim 1, wherein the link analysis result is: the first node has a SPAN generating edge; 所述根据链路分析结果从第一节点的两个SPAN中选择第一SPAN模拟生成SF包括：从第一节点的两个SPAN中选择已经生成边的SPAN模拟生成SF。The selecting the first SPAN from the two SPANs of the first node to simulate and generate the SF according to the link analysis result includes: selecting from the two SPANs of the first node the SPAN that has generated edges to generate the SF through simulation. 3.根据权利要求1所述的方法，其特征在于，所述链路分析结果为：第一节点的两个SPAN中无边但环上除第一节点外的节点有SPAN生成边；3. The method according to claim 1, characterized in that, the link analysis result is: no edge in the two SPANs of the first node but the nodes on the ring except the first node have SPAN to generate edges; 所述根据链路分析结果从第一节点的两个SPAN中选择第一SPAN模拟生成SF包括：从第一节点的两个SPAN中选择距离环上的边最近的SPAN模拟生成SF。The selecting the first SPAN from the two SPANs of the first node to simulate and generate the SF according to the link analysis result includes: selecting the SPAN closest to the edge on the ring from the two SPANs of the first node to generate the SF by simulation. 4.根据权利要求1所述的方法，其特征在于，所述链路分析结果为：第一节点的两个SPAN中既无边也无故障但环上除第一节点外的节点有SPAN生成边；4. The method according to claim 1, characterized in that, the link analysis result is: there is no edge and no fault in the two SPANs of the first node but the nodes on the ring except the first node have SPAN generation edges ; 所述根据链路分析结果从第一节点的两个SPAN中选择第一SPAN模拟生成SF包括：从第一节点的两个SPAN中选择距离环上的边最近的SPAN模拟生成SF。The selecting the first SPAN from the two SPANs of the first node to simulate and generate the SF according to the link analysis result includes: selecting the SPAN closest to the edge on the ring from the two SPANs of the first node to generate the SF by simulation. 5.根据权利要求1所述的方法，其特征在于，所述链路分析结果为：第一节点的两个SPAN中无边但有SPAN存在故障；5. The method according to claim 1, wherein the link analysis result is: there is no edge in the two SPANs of the first node but there is a fault in the SPAN; 所述根据链路分析结果从第一节点的两个SPAN中选择第一SPAN模拟生成SF包括：从第一节点的两个SPAN中选择存在故障的SPAN模拟生成SF。The selecting the first SPAN from the two SPANs of the first node to simulate and generate the SF according to the link analysis result includes: selecting a faulty SPAN from the two SPANs of the first node to simulate and generate the SF. 6.根据权利要求1所述的方法，其特征在于，所述链路分析结果为：环上所有节点的SPAN都无边但第一节点有SPAN存在故障；6. The method according to claim 1, characterized in that, the link analysis result is: the SPAN of all nodes on the ring is all boundless but the first node has a SPAN fault; 所述根据链路分析结果从第一节点的两个SPAN中选择第一SPAN模拟生成SF包括：从第一节点的两个SPAN中选择存在故障的SPAN模拟生成SF。The selecting the first SPAN from the two SPANs of the first node to simulate and generate the SF according to the link analysis result includes: selecting a faulty SPAN from the two SPANs of the first node to simulate and generate the SF. 7.根据权利要求1所述的方法，其特征在于，所述链路分析结果为：环上所有节点的SPAN都无边且第一节点无SPAN存在故障，但环上除第一节点外的节点有SPAN存在故障；7. The method according to claim 1, wherein the link analysis result is: the SPAN of all nodes on the ring has no borders and the first node has no SPAN fault, but the nodes on the ring except the first node There is a SPAN failure; 所述根据链路分析结果从第一节点的两个SPAN中选择第一SPAN模拟生成SF包括：从第一节点的两个SPAN中选择距离环上存在故障的链路最近的SPAN模拟生成SF。The selecting the first SPAN from the two SPANs of the first node to simulate and generate the SF according to the link analysis result includes: selecting the SPAN from the two SPANs of the first node to simulate and generate the SF which is closest to the faulty link on the ring. 8.根据权利要求1至7任一项所述的方法，其特征在于，该方法进一步包括：8. The method according to any one of claims 1 to 7, characterized in that the method further comprises: 当检测到被选择的SPAN不存在SF故障，且未被选择的第一节点的另一个SPAN存在SF故障时，模拟被选择的SPAN上SF消失，并选择第一节点的另一个SPAN模拟生成SF。When it is detected that there is no SF failure in the selected SPAN, and there is an SF failure in another SPAN of the unselected first node, simulate the disappearance of SF on the selected SPAN, and select another SPAN of the first node to simulate the generation of SF . 9.一种弹性分组环RPR节点内部连接故障处理装置，其特征在于，包括：存储单元和处理单元，其中，9. A resilient packet ring RPR node internal connection fault processing device, characterized in that it includes: a storage unit and a processing unit, wherein, 存储单元，用于存储RPR环的链路状态信息；a storage unit for storing link state information of the RPR ring; 处理单元，用于在节点发生内部连接故障时，从存储单元获取RPR环链路状态信息，由链路状态信息得到链路分析结果，根据链路分析结果从发生内部连接故障节点的两个段SPAN中选择第一SPAN模拟生成信号失败SF，并向环上其它节点发送SF信号，且选择第一SPAN模拟生成SF时SF信号传输的节点数大于选择第二SPAN模拟生成SF时SF信号传输的节点数。The processing unit is used to acquire RPR ring link status information from the storage unit when an internal connection failure occurs at a node, obtain link analysis results from the link status information, and obtain the link analysis results from the two segments of the node where the internal connection failure occurs according to the link analysis results. In SPAN, the SF signal fails to be generated by the first SPAN simulation, and the SF signal is sent to other nodes on the ring, and the number of SF signal transmission nodes when the first SPAN simulation SF is selected is greater than that of the SF signal transmission when the second SPAN simulation SF is selected. number of nodes. 10.根据权利要求9所述的装置，其特征在于，所述处理单元包括：获取单元、选择单元和发送单元，其中，10. The device according to claim 9, wherein the processing unit comprises: an acquisition unit, a selection unit, and a sending unit, wherein, 获取单元，用于在节点发生内部连接故障时，从存储单元获取RPR环链路状态信息，由链路状态信息得到链路分析结果，并将链路分析结果发送给选择单元；The obtaining unit is used to obtain the RPR ring link state information from the storage unit when an internal connection failure occurs in the node, obtain the link analysis result from the link state information, and send the link analysis result to the selection unit; 选择单元，用于根据收到的链路分析结果从发生内部连接故障节点的两个SPAN中选择第一SPAN模拟生成SF，并将生成的SF信息发送给发送单元；The selection unit is used to select the first SPAN to simulate and generate SF from the two SPANs of the internal connection failure node according to the received link analysis result, and send the generated SF information to the sending unit; 发送单元，用于根据收到的SF信息向环上其它节点发送SF信号。The sending unit is configured to send the SF signal to other nodes on the ring according to the received SF information. 11.根据权利要求10所述的装置，其特征在于，所述处理单元进一步包括：更新单元，用于在检测到被选择的第一SPAN不存在SF故障，且未被选择的第二SPAN存在SF故障时，模拟第一SPAN上SF消失，并选择第二SPAN模拟生成SF。11. The device according to claim 10, wherein the processing unit further comprises: an updating unit, configured to detect that there is no SF fault in the selected first SPAN and there is an unselected second SPAN When the SF fails, simulate the disappearance of the SF on the first SPAN, and select the second SPAN to simulate the generation of the SF.
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