CN101989934A - Method and system for data ring network fault detection and location - Google Patents
Method and system for data ring network fault detection and location Download PDFInfo
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- CN101989934A CN101989934A CN200910090786XA CN200910090786A CN101989934A CN 101989934 A CN101989934 A CN 101989934A CN 200910090786X A CN200910090786X A CN 200910090786XA CN 200910090786 A CN200910090786 A CN 200910090786A CN 101989934 A CN101989934 A CN 101989934A
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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
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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
Abstract
The invention discloses a method and a system for data ring network fault detection and location. The method comprises the following steps: a non-main node which receives the fault detection message sent by the main node forwards a fault detection message to a main node; a non-main node which does not receive the fault detection message produces a fault location message and sends the fault location message to the main node; and according to the received fault detection message and the fault location message, the main node detects and locates the fault of a data ring network. Based on the invention, multiple link faults on the data ring network can be detected and located.
Description
Technical field
The present invention relates to fault detect and location technology in the data network, be meant the method and system of fault detect of a kind of data looped network and location especially.
Background technology
Continuous increase along with telecommunication service IPization and data service, traditional synchronous digital hierarchy (SDH, Synchronous Digital Hierarchy) circuit-switched technology is no matter aspect the utilance of channel resource, still all there is bigger problem aspect the sudden and flexibility of managing business, therefore, need be from the SDH circuit-switched technology to multiprotocol label switching (MPLS, Multi-Protocol Label Switching) grouping tranmission techniques transition such as, the MPLS network is a kind of of data network.Existing MPLS network is all having very much progress owing to adopted packet-switch technology aspect the sudden and flexibility of managing business; But in the telecommunications bearer network, adopt the MPLS packet-switch technology; can be at reliability, operation management maintain (OAM; Operation Administration and Maintenance) and aspect such as survivability have some problems; the carrying and the transmission of telecommunication service have been influenced; therefore need in the MPLS network, introduce functions such as fault detection mechanism and service protection, ensure the carrying and the transmission of telecommunication service with this.
In existing data network, the following dual mode of the main employing in fault detect and location:
One, on each logical path, the end node by this path periodically sends CC﹠amp end to end; The CV message comes detection failure.When peer node is confiscated CC﹠amp within a certain period of time; During the CV message, illustrate on this logical path to have fault.Fault location mainly is to realize by the mode that sends the loopback message, main process is as follows: when two end nodes detect the path and had fault, one of them end node sends the loopback message to this path, this end node is the source end node of loopback message, after each node on the path receives the loopback message, return this message to the source end node; Whether the source end node can return the position that the loopback message is determined the path failure place according to non-host node.
But the fault detect of this mode and location message can cause needing to send a lot of OAM messages in certain section physical link all at each logical path like this, have reduced the utilance of link circuit resource, have influenced professional service quality.
Two, two-way forwarding detects (BFD based on link level, Bidirectional Forwarding Detection) mode is come detection failure, this kind detection mode mainly is between two adjacent on two logic OR physical links nodes, constantly send the BFD message, whether the link that detects between these two nodes exists fault.
This mode is the detection at the link level fault, mainly is to realize that by sending the BFD message OAM message amount of transmission is less relatively, can only detect the fault of single link, can not detect multistage link failure and node failure.
Summary of the invention
In view of this, main purpose of the present invention is to provide the method and system of fault detect of a kind of data looped network and location, can detect data ring online many places link failure and positions.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides the method for fault detect of a kind of data looped network and location, this method comprises:
Receive the non-host node of the fault detect message of host node transmission, transmit described fault detect message and give host node;
Do not receive the non-host node of described fault detect message, generate the fault location message, and send to described host node;
Described host node is according to the described fault detect message and the described fault location message that receive, and the fault of data looped network is detected and locatees.
This method further comprises: described non-host node receives the fault detect message that host node regularly sends respectively from the interior ring direction and the outer shroud direction of data looped network;
The ring direction is opposite with the outer shroud direction in described.
This method further comprises: when described non-host node receives the fault detect message from interior ring direction, described fault detect message is transmitted to host node according to interior ring direction;
Described non-host node is transmitted to host node with described fault detect message according to the outer shroud direction when the outer shroud direction receives the fault detect message.
This method further comprises: described non-host node not when interior ring and/or outer shroud direction receive the fault detect message, generated the fault location message, and sends to host node according to interior ring and outer shroud direction respectively in the default time.
This method further comprises: described host node is according to the fault detect message and the fault location message that receive, and the fault of the interior ring of data looped network and outer shroud is detected and locatees, and is specially:
Described host node when interior ring and/or outer shroud direction receive the fault detect message, judge described in ring and/or outer shroud do not break down; Described host node when interior ring and/or outer shroud direction do not receive the fault detect message, judge described in ring and/or outer shroud break down;
When ring and/or outer shroud broke down in described, described host node positioned described fault according to the fault location message that receives.
The present invention also provides the system of fault detect of a kind of data looped network and location, and this system comprises: host node and non-host node, wherein,
Described host node is used for sending the fault detect message to described non-host node; Also be used for fault detect message and the fault location message transmitted according to described non-host node, the fault of data looped network is detected and locatees;
Described non-host node is used for when receiving the fault detect message, transmits described fault detect message and gives host node; Also be used for when not receiving the fault detect message, generate the fault location message, and send to host node.
Described host node comprises: the first message generation module, first packet forwarding module and the first message receiving processing module, wherein,
The described first message generation module is used to generate described fault detect message, offers described first packet forwarding module;
Described first packet forwarding module is used for described fault detect message is sent to described non-host node;
The described first message receiving processing module is used for after described first packet forwarding module has sent the fault detect message, receives fault detect message and fault location message from described non-host node, and the fault of data looped network is detected and locatees.
Described non-host node comprises: the second message receiving processing module, the second message generation module and second packet forwarding module, wherein,
The described second message receiving processing module is used to receive the fault detect message that host node sends, and the fault detect message that receives is offered described second packet forwarding module; Also be used for when not receiving described fault detect message, notifying the described second message generation module;
The described second message generation module is used for when the described second message receiving processing module does not receive the fault detect message, generates the fault location message, offers described second packet forwarding module;
Described second packet forwarding module is used for described fault detect message is transmitted to host node; Described fault location message is sent to described host node.
Described first packet forwarding module is further used for, and interior ring direction and the outer shroud direction from the data looped network sends the fault detect message to non-host node respectively termly;
Correspondingly, the described second message receiving processing module is further used for, and receives the fault detect message respectively from described interior ring direction and outer shroud direction;
The ring direction is opposite with the outer shroud direction in described.
Described second packet forwarding module is further used for, when the described second message receiving processing module when interior ring direction receives the fault detect message, described fault detect message is transmitted to host node according to interior ring direction; When the described second message receiving processing module when the outer shroud direction receives the fault detect message, described fault detect message is transmitted to host node according to the outer shroud direction;
The described second message generation module is further used for, and not when interior ring and/or outer shroud direction receive the fault detect message, generates the fault location message at the described second message receiving processing module;
Correspondingly, described second packet forwarding module is further used for, and described fault location message is sent to host node according to interior ring and outer shroud direction respectively.
Ring and outer shroud in the present invention is divided into the data looped network, host node sends the fault detect message to the online non-host node of data ring from interior ring direction and outer shroud both direction respectively, when non-host node not when interior ring and/or outer shroud direction receive fault detect OAM, generate the fault location message and send to host node from interior ring and outer shroud both direction; Whether ring and outer shroud link broke down in host node can be judged according to the fault detect message, can determine the occurrence positions of fault according to the fault location message.So, by the present invention can be to the fault in the data looped network, detect and locate as many places fault on many places fault and the different directional ring on single link fault, single node fault, the equidirectional ring etc.; Method of the present invention in addition can also reduce fault detect, location message in the online transmission data of data ring, has improved the utilization ratio of link.
Description of drawings
Fig. 1 is the data structure schematic diagram of fault detect of the present invention, location message;
Fig. 2 is the method flow diagram of data looped network of the present invention fault detect and location;
Fig. 3 is a single link fault scenes schematic diagram;
Fig. 4 is a single node fault scenes schematic diagram;
Fig. 5 is a fault scenes schematic diagram in many places on the equidirectional ring;
Fig. 6 is a fault scenes schematic diagram in many places on the different directional ring;
Fig. 7 is the system configuration schematic diagram of data looped network of the present invention fault detect and location.
Embodiment
The technical solution of the present invention is further elaborated below in conjunction with the drawings and specific embodiments.
Ring and outer shroud in the present invention is divided into the data looped network, host node send the fault detect message to the online non-host node of data ring from interior ring direction and outer shroud direction respectively.Wherein, interior ring direction and outer shroud direction are opposite, and when being counter clockwise direction as interior ring direction, the outer shroud direction is a clockwise direction, and certainly, when interior ring direction was clockwise direction, the outer shroud direction was counterclockwise.
In actual applications, can select one as required from all online nodes of data ring is host node, host node is regularly from interior ring and outer shroud both direction, and the non-host node online to data ring sends the fault detect message, detects the link failure of data looped network; Non-host node not when the direction of interior ring and/or outer shroud receives the fault detect message, generated the fault location message, and sends to host node from interior ring and outer shroud both direction in the default time, came link failure is positioned.
Fig. 1 is the data structure schematic diagram of fault detect of the present invention, location message, and the field that the present invention need pay close attention to is as follows:
The Channel the type field, being used to refer to this message is the message that is used for fault detect and location.
Message Length field is used to indicate the length of this message, and unit is bit.
The Message the type field, it is 0 o'clock that this field value can be set as required, represents that this message is the fault detect message that host node sends; Be 1 o'clock, represent that this message is the fault location message that non-host node generates; This field can also be carried the type of message information of some expansions as required.
The S field, it is 0 o'clock that this field value can be set as required, the sending direction of representing this message is clockwise outer shroud direction; Be 1 o'clock, the sending direction of representing this message is counterclockwise interior ring direction.Certainly, the sending direction of message and this field value can also have other corresponding relation as required.
Point Address field is used to indicate the sign (ID) of the node that sends this message, and when receiving the message that node 2 sends as node 1, the value of this field promptly is used to refer to the ID of node 2.
The Ring id field is used to indicate the ID of current data looped network, this message is sent to other data looped network with the node that prevents the current data looped network.
Below by concrete be that embodiment illustrates the solution of the present invention, Figure 2 shows that the method flow diagram of data looped network of the present invention fault detect and location, comprising:
At first, host node needs the non-host node transmission fault detect message on the current data looped network regularly, and described regular duration can be provided with as required, sends the primary fault detection messages every 30 minutes as host node.
Host node need send the fault detect message respectively to non-host node from interior ring and outer shroud both direction; The non-host node that receives the fault detect message needs to transmit this fault detect message to its downstream node, up to host node according to the direction (interior ring direction, outer shroud direction) that receives message.In data ring web frame shown in Figure 3, node 1 is a host node, and interior ring direction is that the outer shroud direction is clockwise counterclockwise.Node 6 is that downstream node, the node 5 of node 1 is the downstream node of node 6 on interior ring direction, by that analogy, node 1 is the downstream node of node 2, if there is not fault in interior ring, then the fault detect message will transmit according to the path of node 1 (host node) → node 6 → node 5 → node 4 → node, 3 → node, 2 → node 1 (host node) on interior ring; In like manner, if there is not fault in outer shroud, then the fault detect message will transmit according to the path of node 1 (host node) → node 2 → node 3 → node 4 → node, 5 → node, 6 → node 1 (host node) on outer shroud.
In view of above description, as can be seen, when data ring broke down on the net, host node just can't receive the fault detect message that non-host node returns.When host node did not receive the fault detect message on interior ring or outer shroud, fault had appearred in ring or outer shroud in illustrating.
Step 202 does not receive the non-host node of fault detect message, generates the fault location message, and sends to host node.
If the data ring non-host node except that host node does not on the net receive the fault detect message from interior ring and/or outer shroud direction in the default time, then generate the fault location message, and send to host node according to interior ring and outer shroud both direction respectively.Wherein, the described default time can send fault detect start of heading timing from host node, and concrete duration can be provided with according to the actual conditions of data looped network, if time that should be default is to constantly, present node does not also receive the fault detect message, then generates the fault location message.
When data ring breaks down on the net, link failure or node failure, can cause some or a plurality of nodes can't receive the fault detect message, as shown in Figure 3, fault has taken place in the link that interior ring is gone up between node 5 and the node 4, then node 5 just can't be transmitted to node 4 with the fault detect message that receives, so node 4, node 3 and node 2 all do not receive the fault detect message; At this moment, node 4, node 3 and fault location message of node 2 each self-generating, and send to node 1 (host node) from interior ring and outer shroud both direction.
The fault detect message that the host node foundation receives can internally encircle and/or the fault of outer shroud detects, and whether ring or outer shroud break down in promptly judging; When there were fault in ring and/or outer shroud in detecting, host node positioned fault according to the fault location message that receives, and promptly determined the position that fault takes place.
Below by specific embodiment illustrate that fault detect message, fault location message are in the fault detect of reality and the application in the location.Below among each embodiment, node 1 is set is host node, the outer shroud direction be clockwise, interior ring direction is counterclockwise.
Fig. 3 is a single link fault scenes schematic diagram, and as can be seen from the figure outer shroud does not break down, and node 1 can receive the fault detect message that the outer shroud direction is returned, and then node 1 is judged outer shroud link fault-free; Fault has taken place in the link that interior ring is gone up between node 5 and the node 4, because node 5 can't be transmitted the fault detect messages to node 4, node 1 can't receive the fault detect message from interior ring direction, and then fault is given birth in environment-development in node 1 judgement.
Then, the fault that node 1 needs internal environment-development to give birth to positions analysis: therefore node 4, node 3 and node 2 generate the fault location message, and send to node 1 from interior ring and outer shroud both direction respectively owing to do not receive the fault detect message; For node 1, it has received the fault location message that node 4, node 3 and node 2 send respectively from interior ring direction and outer shroud direction, illustrate that node 4 is normal to the link between the node 1 on the interior ring direction, but do not receive the fault location message of node 5 and node 6 from the outer shroud direction, can judge that thus node 6 and node 5 have received the fault detect message on interior ring, node 4, node 3 and node 2 do not receive the fault detect message, and the fault that then can determine the inner ring link generation is on the inner ring link between node 5 and the node 4.
Fig. 4 is a single node fault scenes schematic diagram, fault has taken place in node 5 as can be seen from Figure 4, then node 5 can't be transmitted to the fault detect message that receives from interior ring direction and outer shroud direction its downstream node (be node 4 at the downstream node of interior ring direction, be node 6 at the downstream node of outer shroud direction), therefore, node 1 can't receive the fault detect message from interior ring and outer shroud direction, and then node 1 can judge that fault has all taken place for inner ring link and outer shroud link.
Then, 1 pair of fault of node positions analysis: on interior ring, node 4, node 3 and node 1 can't receive the fault detect message, therefore generate the fault location message, send to node 1 by interior ring and outer shroud both direction; On outer shroud, node 6 can't receive the fault detect message, therefore generates the fault location message, sends to node 1 by interior ring and outer shroud both direction; For node 1, it can receive the fault location message of node 2, node 3 and node 4 from interior ring direction, can receive the fault location message of node 6 from the outer shroud direction, but all do not receive the fault location message of node 5 from interior ring direction or outer shroud direction, illustrate that node 5 has become an isolated node.
Fig. 5 is a fault scenes schematic diagram in many places on the equidirectional ring, as we know from the figure, outer shroud link fault-free, interior ring is gone up the link between node 6 and the node 5, and fault has taken place in the link between node 4 and the node 3, then node 1 can't receive the fault detect message from interior ring direction, judges that inner ring link breaks down.
1 pair of inner ring link fault of node positions analysis then, because node 5, node 4, node 3 and node 2 can't receive the fault detect message, and each self-generating fault location message of these four nodes then, and send to node 1 from interior ring and outer shroud both direction; For node 1, because the outer shroud link is normal, and it can receive the fault location message of node 5, node 4, node 3 and node 2 from the outer shroud direction, have only node 6 to receive the fault detect message on the ring in illustrating, can determine that thus fault has necessarily taken place the inner ring link between node 6 and the node 5; Simultaneously, node 1 can only receive the fault location message of node 2 and node 3 from interior ring direction, if the link between node 4 and the node 3 is normal, then node 1 should also can receive the fault location message of node 4, but but do not receive, therefore can determine that fault has necessarily taken place the link between node 4 and the node 3; And whether break down for the inner ring link between node 5 and the node 4, can not determine herein.
Fig. 6 is a fault scenes schematic diagram in many places on the different directional ring, as we know from the figure, fault has taken place in the link that interior ring is gone up between node 6 and the node 5, fault has taken place in the link on the outer shroud between node 4 and the node 3, therefore, node 1 all can't receive the fault detect message on interior ring and outer shroud both direction, can judge that fault has all taken place for inner ring link and outer shroud link.
Then, 1 pair of fault of node positions analysis: can determine that node 2, node 3, node 4, node 5 and node 6 all need to generate the fault location message, and send to node 1 by interior ring and outer shroud both direction; For node 1, it receives only the fault location message of node 5, node 4, node 3 and node 2 from interior ring direction, in can determining thus on the ring direction node 5 be normal to the link of node 1; It can receive the fault location message of node 4, node 5 and node 6 on the outer shroud direction, can determine that node 4 is normal to the outer shroud link between the node 1 on the outer shroud direction.
In order to realize said method, the present invention also provides the system of fault detect of a kind of data looped network and location, as shown in Figure 7, and host node 10 and non-host node 20, wherein,
Host node comprises: the first message generation module 11, first packet forwarding module 12 and the first message receiving processing module 13, wherein,
The first message generation module 11 is used to generate the fault detect message, offers first packet forwarding module 12;
First packet forwarding module 12 is used for the fault detect message is sent to non-host node 20;
The first message receiving processing module 13 is used for after first packet forwarding module 12 has sent the fault detect message, receives fault detect message and fault location message from non-host node 20, and the fault of data looped network is detected and locatees.
Non-host node comprises 20: the second message receiving processing modules 21, the second message generation module 22 and second packet forwarding module 23, wherein,
The second message receiving processing module 21 is used to receive the fault detect message that host node 10 sends, and the fault detect message that receives is offered second packet forwarding module 23; Also be used for when not receiving the fault detect message, notify the second message generation module 22;
The second message generation module 22 is used for when the second message receiving processing module 21 does not receive the fault detect message, generates the fault location message, offers second packet forwarding module 23;
Second packet forwarding module 23 is used for the fault detect message is transmitted to host node 10; The fault location message is sent to host node 10.
First packet forwarding module 12 is further used for, and interior ring direction and the outer shroud direction from the data looped network sends the fault detect message to non-host node 20 respectively termly;
Correspondingly, the second message receiving processing module 21 is further used for, and receives the fault detect message respectively from interior ring direction and outer shroud direction;
Interior ring direction is opposite with the outer shroud direction.
Second packet forwarding module 23 is further used for, when the second message receiving processing module 21 when interior ring direction receives the fault detect message, the fault detect message is transmitted to host node 10 according to interior ring direction; When the second message receiving processing module 21 when the outer shroud direction receives the fault detect message, the fault detect message is transmitted to host node 10 according to the outer shroud direction;
The second message generation module 22 is further used for, and not when interior ring and/or outer shroud direction receive the fault detect message, generates the fault location message at the second message receiving processing module 21;
Correspondingly, second packet forwarding module 23 is further used for, and the fault location message is sent to host node 10 according to interior ring and outer shroud direction respectively.
It is to be noted that any one online ordinary node of data ring of the present invention can be as above-mentioned host node and non-host node, then ordinary node promptly comprises the structure of host node among Fig. 7, has also comprised the structure of non-host node.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (10)
1. the method for data looped network fault detect and location is characterized in that, this method comprises:
Receive the non-host node of the fault detect message of host node transmission, transmit described fault detect message and give host node;
Do not receive the non-host node of described fault detect message, generate the fault location message, and send to described host node;
Described host node is according to the described fault detect message and the described fault location message that receive, and the fault of data looped network is detected and locatees.
2. according to the method for claim 1 described data looped network fault detect and location, it is characterized in that this method further comprises: described non-host node receives the fault detect message that host node regularly sends respectively from the interior ring direction and the outer shroud direction of data looped network;
The ring direction is opposite with the outer shroud direction in described.
3. according to the method for claim 2 described data looped network fault detect and location, it is characterized in that, this method further comprises: when described non-host node receives the fault detect message from interior ring direction, described fault detect message is transmitted to host node according to interior ring direction;
Described non-host node is transmitted to host node with described fault detect message according to the outer shroud direction when the outer shroud direction receives the fault detect message.
4. according to the method for claim 2 described data looped network fault detect and location, it is characterized in that, this method further comprises: described non-host node in the default time not when interior ring and/or outer shroud direction receive the fault detect message, generate the fault location message, and send to host node according to interior ring and outer shroud direction respectively.
5. according to the method for claim 2 to 4 arbitrary described data looped network fault detect and location, it is characterized in that, this method further comprises: described host node is according to the fault detect message and the fault location message that receive, the fault of the interior ring of data looped network and outer shroud is detected and locatees, be specially:
Described host node when interior ring and/or outer shroud direction receive the fault detect message, judge described in ring and/or outer shroud do not break down; Described host node when interior ring and/or outer shroud direction do not receive the fault detect message, judge described in ring and/or outer shroud break down;
When ring and/or outer shroud broke down in described, described host node positioned described fault according to the fault location message that receives.
6. the system of data looped network fault detect and location is characterized in that, this system comprises: host node and non-host node, wherein,
Described host node is used for sending the fault detect message to described non-host node; Also be used for fault detect message and the fault location message transmitted according to described non-host node, the fault of data looped network is detected and locatees;
Described non-host node is used for when receiving the fault detect message, transmits described fault detect message and gives host node; Also be used for when not receiving the fault detect message, generate the fault location message, and send to host node.
7. according to the system of claim 6 described data looped network fault detect and location, it is characterized in that described host node comprises: the first message generation module, first packet forwarding module and the first message receiving processing module, wherein,
The described first message generation module is used to generate described fault detect message, offers described first packet forwarding module;
Described first packet forwarding module is used for described fault detect message is sent to described non-host node;
The described first message receiving processing module is used for after described first packet forwarding module has sent the fault detect message, receives fault detect message and fault location message from described non-host node, and the fault of data looped network is detected and locatees.
8. according to the system of claim 6 described data looped network fault detect and location, it is characterized in that described non-host node comprises: the second message receiving processing module, the second message generation module and second packet forwarding module, wherein,
The described second message receiving processing module is used to receive the fault detect message that host node sends, and the fault detect message that receives is offered described second packet forwarding module; Also be used for when not receiving described fault detect message, notifying the described second message generation module;
The described second message generation module is used for when the described second message receiving processing module does not receive the fault detect message, generates the fault location message, offers described second packet forwarding module;
Described second packet forwarding module is used for described fault detect message is transmitted to host node; Described fault location message is sent to described host node.
9. according to the system of claim 7 or 8 described data looped network fault detects and location, it is characterized in that,
Described first packet forwarding module is further used for, and interior ring direction and the outer shroud direction from the data looped network sends the fault detect message to non-host node respectively termly;
Correspondingly, the described second message receiving processing module is further used for, and receives the fault detect message respectively from described interior ring direction and outer shroud direction;
The ring direction is opposite with the outer shroud direction in described.
10. according to the system of claim 9 described data looped network fault detect and location, it is characterized in that,
Described second packet forwarding module is further used for, when the described second message receiving processing module when interior ring direction receives the fault detect message, described fault detect message is transmitted to host node according to interior ring direction; When the described second message receiving processing module when the outer shroud direction receives the fault detect message, described fault detect message is transmitted to host node according to the outer shroud direction;
The described second message generation module is further used for, and not when interior ring and/or outer shroud direction receive the fault detect message, generates the fault location message at the described second message receiving processing module;
Correspondingly, described second packet forwarding module is further used for, and described fault location message is sent to host node according to interior ring and outer shroud direction respectively.
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| CN200910090786.XA CN101989934B (en) | 2009-08-06 | 2009-08-06 | A kind of data ring network fault detect and the method and system of positioning |
| PCT/CN2009/075535 WO2011015011A1 (en) | 2009-08-06 | 2009-12-14 | Method and system for ring network fault detection and locating |
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| CN200910090786.XA CN101989934B (en) | 2009-08-06 | 2009-08-06 | A kind of data ring network fault detect and the method and system of positioning |
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| CN104954153A (en) * | 2014-03-24 | 2015-09-30 | 中兴通讯股份有限公司 | Method and device for node fault detection |
| CN106162707A (en) * | 2015-04-10 | 2016-11-23 | 富士通株式会社 | The monitoring method of aggregation node state, device and system |
| CN107026780A (en) * | 2017-04-14 | 2017-08-08 | 云南电网有限责任公司电力科学研究院 | A kind of distribution optical fiber ring network fault point positioning method and system based on Internet of Things |
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| CN101001192B (en) * | 2007-01-17 | 2010-04-21 | 华为技术有限公司 | Method, system and equipment for protecting ring network link |
| CN101212366B (en) * | 2007-12-21 | 2011-12-21 | 杭州华三通信技术有限公司 | Failure detection method, system, and main node in Ethernet loop network |
| CN101227372B (en) * | 2008-02-21 | 2010-09-08 | 杭州华三通信技术有限公司 | Ether ring net protection method, transmission node and host node |
| CN101547131B (en) * | 2009-05-15 | 2011-04-13 | 迈普通信技术股份有限公司 | EAPS looped network single-channel fault location and protection method |
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2009
- 2009-08-06 CN CN200910090786.XA patent/CN101989934B/en not_active Expired - Fee Related
- 2009-12-14 WO PCT/CN2009/075535 patent/WO2011015011A1/en active Application Filing
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| WO2011015011A1 (en) | 2011-02-10 |
| CN101989934B (en) | 2017-04-05 |
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