CN102868620B - Transannular service protecting method and device - Google Patents
Transannular service protecting method and device Download PDFInfo
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Abstract
The invention discloses a kind of transannular service protecting methods and device, the above method to include：Configuration work path and Protection path between the ingress and egress of each ring of transannular business；Fault detect is carried out to the operating path in each ring of transannular business and Protection path；It, will be in service switching to the corresponding Protection path in above-mentioned fail operation path when detecting that operating path breaks down；When detecting that above-mentioned Protection path also breaks down, the corresponding backup node crossed on ring protection path in above-mentioned fail operation path is activated, by crossing ring protection path bearer service.The problem of by technical solution provided by the invention, solving existing transannular guard method, being required for as transannular business configuration transannular Protection path end to end, difficulty can be brought to configuration work, so as to no longer need to configure cross-domain end-to-end linear protection path.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of transannular service protecting method and device.
Background technology
For in currently existing technology, the protection for transannular business is mainly end-to-end linear by protection superposition in ring
Protection, to realize transannular service protection.In its method realized, by ring internal fault detection method, whether deposited to detect in ring
In failure, if there are failure, first start protection and recovery that protection in ring carries out transannular business, if protection resource is in ring
Down state then delays (Hold by LDI (Link Defect Indication, connecting fault instruction) or client layer
Off) the time, to start linear end-to-end protection.These transannular guard methods, be required for for transannular business configuration end to end across
Ring protection path can bring certain difficulty to configuration work.
Invention content
It is a primary object of the present invention to provide a kind of transannular service protecting method and device, to solve the above problems.
According to an aspect of the invention, there is provided a kind of transannular service protecting method, including：In each of transannular business
Configuration work path and Protection path between the ingress and egress of ring；To the operating path in each ring of transannular business and
Protection path carries out fault detect；When detecting that operating path breaks down, by service switching to above-mentioned fail operation path
On corresponding Protection path；When detecting that above-mentioned Protection path also breaks down, activate above-mentioned fail operation path corresponding
The backup node on ring protection path is crossed, by crossing ring protection path bearer service.
When detecting that operating path breaks down, will be wrapped in service switching to the corresponding Protection path in fail operation path
It includes：When detecting that operating path breaks down, detect the node in fail operation path to fail operation path to end segment
Point sends state reconciliation message, notifies the peer node is switched on Protection path to send or receive service message；Detect event
The node of barrier operating path is also switched to that service message is sent or received on Protection path.
It is standby on the corresponding ring protection path excessively in activation fail operation path when detecting that Protection path also breaks down
Part node includes：When detecting that Protection path also breaks down, the ingress of the corresponding ring in fail operation path is to excessively environmentally friendly
Backup node on road maintenance diameter sends the state reconciliation message for activating ring protection path；Cross the backup on ring protection path
Node receives the state reconciliation message for activating ring protection path, activates the transannular LSP (Label on backup node
Switching Path, label switched path), transannular LSP is made to be switched to working condition from stand-by state.
Included by crossing ring protection path bearer service：The backup node crossed on ring protection path is received from ring protection path excessively
The service message sended over；Pop up service message outer layer as SPME (the Sub-Path Maintenance of front ring
Element, subpath maintenance entity) label, carry out transannular LSP label exchange；The SPME labels of next ring are pressed into, by business report
Text is sent to the egress of next ring.
In the corresponding backup node crossed on ring protection path in activation fail operation path, industry is carried by crossing ring protection path
After business, further include：After the Failure elimination of operating path or Protection path, the ingress of the corresponding ring in fail operation path to
The state reconciliation message that the backup node transmission crossed on ring protection path is used to deactivate；Cross the backup node on ring protection path
The state reconciliation message being used to deactivate is received, transannular LSP is switched to stand-by state from working condition, by operating path or guarantor
Road maintenance diameter continues bearer service.
The transannular node of each ring of transannular business is virtually a node, and transannular business is every with transannular backup node
The holding on label information and operating path status information is synchronous with transannular backup node for the transannular node of a ring.
According to another aspect of the present invention, a kind of transannular service protection device is provided, including：Path configuration module is used
Configuration work path and Protection path between the ingress and egress in each ring of transannular business；Fault detection module,
Node for controlling each ring of transannular business carries out fault detect to the operating path in ring and Protection path；Path switches
Module, will be in service switching to the corresponding Protection path in fail operation path for when detecting that operating path breaks down；
Node active module, for when detecting that Protection path also breaks down, activating above-mentioned fail operation path is corresponding to cross ring
Backup node on Protection path, by crossing ring for Protection path bearer service.
Path handover module includes：Switching notice unit, for when detecting that operating path breaks down, control to detect
Node to fail operation path sends state reconciliation message to the peer node in fail operation path, and the peer node is notified to cut
It changes on the corresponding Protection path in fail operation path and sends or receive service message；Active switch unit detects for controlling
Node to fail operation path is also switched to that service message is sent or received on Protection path.
Node active module includes：Message unit is activated, for when detecting that Protection path also breaks down, controlling event
The ingress for hindering the corresponding ring of operating path sends use to the corresponding backup node crossed on ring protection path in error protection path
In the state reconciliation message for activating ring protection path；Execution unit is activated, for controlling and receiving to activate ring protection
Transannular LSP on the backup node crossed on the ring protection path activation backup node of the state reconciliation message in path makes transannular LSP
Working condition is switched to from stand-by state.
Node active module further includes：Message receiving unit, for the backup node on ring protection path to be controlled to receive
From the service message that ring protection path sends over excessively；Tag switching unit, for controlling outside backup node pop-up service message
Layer when the SPME labels of front ring, progress transannular LSP label exchange；Label is pressed into unit, under backup node is controlled to be pressed into
Service message is sent to the egress of next ring by the SPME labels of one ring.
Path handover module further includes：Message unit is deactivated, in the Failure elimination of operating path or Protection path
Afterwards, the ingress of the corresponding ring in control fail operation path is used to deactivate to the backup node transmission crossed on ring protection path
State reconciliation message；Execution unit is deactivated, for controlling and receiving the state reconciliation message for crossing ring tunnel being used to deactivate
The backup node crossed on ring protection path transannular LSP is switched to stand-by state from working condition, by operating path or protection
Continue bearer service in path.
By the present invention, when all being broken down using the operating path and Protection path of some ring when transannular business, swash
It serves somebody right failure ring transannular backup node, by the scheme of the transannular backup node bearer service, solve existing transannular protection side
The problem of method is required for as transannular business configuration transannular Protection path end to end, can bring difficulty to configuration work, so as to not
Cross-domain end-to-end linear protection path is needed to configure again.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and forms the part of the application, this hair
Bright illustrative embodiments and their description do not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of transannular service protecting method according to embodiments of the present invention；
Fig. 2 is the polycyclic dual node interconnection protection configuration relation schematic diagram according to present example；
Fig. 3 is that working portion path failure protects schematic diagram in the ring according to present example；
Fig. 4 is to work and protect part path simultaneous faults to cross ring protection schematic diagram in the ring according to present example；
Fig. 5 is to cross ring protection schematic diagram according to the interlink node failure of present example；
Fig. 6 is to work and protect part path simultaneous faults to cross ring protection signal in the intermediate ring according to present example
Figure；
Fig. 7 is the flow chart according to the transannular service protecting method of present example；
Fig. 8 is the structure diagram of transannular service protection device according to embodiments of the present invention.
Specific embodiment
Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that do not conflicting
In the case of, the feature in embodiment and embodiment in the application can be combined with each other.
Fig. 1 is the flow chart of transannular service protecting method according to embodiments of the present invention.As shown in Figure 1, according to the present invention
The transannular service protecting method of embodiment includes：
Step S102, configuration work path and protection road between the ingress and egress of each ring of transannular business
Diameter；
Step S104 carries out fault detect to the operating path in each ring of transannular business and Protection path；
Step S106, when detecting that operating path breaks down, by service switching to the corresponding guarantor in fail operation path
On road maintenance diameter；
Step S108, when detecting that above-mentioned Protection path also breaks down, activation fail operation path is corresponding to cross ring
Backup node on Protection path, by crossing ring protection path bearer service.
Phase between two nodes (i.e. transannular node and transannular backup node) of two rings interconnections of above method profit
The protection of transannular business is realized in mutual backup relation and ring part path.When the operating path of some ring of transannular business occurs
During failure, the preferential Protection path bearer service using in ring when also failure has occurred in Protection path, then activates the failure ring
The backup node (may be transannular node, it is also possible to transannular backup node) crossed on ring protection path, by crossing ring protection path
Come reception and forwarding that bearer service carries out service message, continue transannular business, so as to avoid existing transannular business
In protection, the problem of protection switching delay for needing to configure the end-to-end linear protection path of transannular and thus bringing is longer.
It is mentioned here to cross ring protection path, refer to the link between failure ring ingress and transannular node or transannular backup node, by
In transannular node and transannular backup node be mutually redundant, so will according to be in active link comprising transannular node or across
Ring backup node, to determine ring protection link.
In the above-described embodiments, there are many kinds of methods business being switched to by operating path on Protection path, excellent at this
Choosing provides a kind of preferred embodiment in implementing.Preferably, step S106 can include following processing：
(1) when detecting that operating path breaks down, detect the node in fail operation path to fail operation path
Peer node send state reconciliation message, notify the peer node be switched on Protection path send or receive service message；
(2) detect that the node in fail operation path is also switched to that service message is sent or received on Protection path.
The node for detecting failure may be that ingress is also likely to be egress, when detecting that operating path breaks down
When, it detects that the node of failure needs to send state reconciliation message to peer node, peer node is notified to be switched to protection first
Service message is sent or received on path, then oneself is switched to again on Protection path and is sent or receive service message, so as to protect
Having demonstrate,proved business will not interrupt.
Likewise, the method for activating ring backup node also has very much, a kind of preferred mode is provided in this preferred embodiment.
Preferably, step S108 may further include following processing：
(1) when detecting that Protection path also breaks down, the ingress of the corresponding ring in fail operation path is to excessively environmentally friendly
Backup node on road maintenance diameter sends the state reconciliation message for activating ring protection path；
(2) backup node crossed on ring protection path receives the state reconciliation message for activating ring protection path, swashs
Transannular LSP on backup node living, makes transannular LSP be switched to working condition from stand-by state.
After two end node of failure ring is all switched to Protection path in ring, then detects and also break down on Protection path
When, then go out ingress at this time all in a kind of protection resource down state, so as to which service disconnection can be caused.In this preferred implementation
In example, employ by the ingress of failure ring send the mode of activation message by cross on the backup node on ring protection path across
Ring LSP switches to working condition, by transannular LSP come the means of bearer service, ensure that the progress of business, so as to no longer need
The end-to-end linear protection path of transannular is configured, and then eliminates the problem of protection switching delay thus brought is longer.It needs
Illustrate, detect that the node that Protection path also breaks down may be ingress, it is also possible to egress.When ingress is examined
When measuring Protection path and also breaking down, ingress can directly transmit activation message, when egress detects that Protection path is also sent out
During raw failure, then notify ingress Protection path that failure also has occurred, then activation message is sent by ingress.
Preferably, in step S108, following processing can be included by crossing ring backup node bearer service：
(1) backup node excessively on ring protection path is received from the service message that ring protection path sends over excessively；
(2) pop-up service message outer layer when the SPME labels of front ring, progress transannular LSP label exchange；
(3) the SPME labels of next ring are pressed into, service message is sent to the egress of next ring.
During by crossing ring for Protection path bearer service, since SPME labels are for should be in each ring, so excessively environmentally friendly
Backup node on road maintenance diameter will first pop up the SPME labels when front ring when receiving service message, carry out LSP label
The SPME labels of next ring are pressed into after exchange again, to ensure service message smoothly sending and receiving in next ring.
Preferably, following processing can also be included after step S108：
(1) after the Failure elimination of the operating path of failure ring or Protection path, the ingress of failure ring is to the mistake of the ring
The state reconciliation message that backup node transmission on ring protection path is used to deactivate；
(2) the state reconciliation message for crossing ring tunnel that the reception of above-mentioned backup node is used to deactivate, by transannular LSP from work
State is switched to stand-by state, continues bearer service by restoring normal operating path or Protection path.
This preferred embodiment gives the processing method after operating path or Protection path fault recovery, due to the use of mistake
Ring protection path bearer service belongs to emergent means, therefore, when there is a recovery in the operating path or Protection path of failure ring
After normal, preferably service switching is gone back, uses the normal operating path of recovery or Protection path bearer service.
Preferably, the transannular node of each ring of transannular business and transannular backup node can be virtually a node, and
The transannular node of each ring of institute's transannular business is kept with transannular backup node on label information and operating path status information
It is synchronous.
This preferred embodiment preferred transannular node and transannular backup node Automated generalization mode in giving one.In order to right
Operating path and Protection path are all protected and are restored there are fault condition in ring, preferably by two nodes of two ring interconnections
(i.e. transannular node and transannular backup node) invents a node, ensures the transannular part of Protection path and event will not occur easily
Barrier.Meanwhile in order to ensure an interlink node in two nodes of two rings interconnection restart when, can learn to original
There are a label information and operating path state, the label information of two nodes and operating path status information preferably moment keep same
Step, i.e., it is upper for two nodes of two rings interconnections, when being deleted there are the distribution of new label or old label aging, it should
Another backup node is notified immediately；In addition, when there is no label information variation between two nodes, node is also regularly carried out
The notice of upper label and operating path state, under normal circumstances, path is without forwarding under stand-by state.
Above preferred embodiment is described in detail with reference to example.
This example is by taking transannular shown in Fig. 2 as an example, as shown in Fig. 2, for transannular business (A-B-C-D-E-F),
Across three ring Ring 1, Ring 2 and Ring 3；In order to realize the protection of the transannular business, (including up time in each ring
Needle and counter clockwise direction) corresponding operating path (work SPME) is configured, Protection path (protection SPME), crosses ring protection path
(crossing ring protection SPME), and the part of links is monitored and is managed.Such as in Ring 1, institute configuration work SPME：A-B-C,
Protect SPME：A-A1-B1-C1-C crosses ring protection SPME：A-A1-B1-C1；In Ring 2, institute configuration work SPME：C-D-E,
Protect SPME：C-C1-D1-E1-E crosses ring protection SPME：C-C1-D1-E1；And for the SPME that in Ring 3, works：E-F is protected
Protect SPME：E-E1-F1-F crosses ring protection SPME：E-E1-F1.
For two nodes interconnected between two rings, such as：Between ring ring 1 and ring 2 interlink node C and
Interlink node E and E1 between C1, Ring 2 and Ring 3 can invent a node, to ensure that all distribution labels exist
Two node uniqueness of the interconnection.Simultaneously require the two interlink nodes into row label with path state information synchronous and phase
Together, when need distribute a new label or delete an old label, it should notify another interlink node immediately, into row label with
The update of path state information.It is had existed on another node in addition, working as the new label distributed, then the label point
With unsuccessful, need to redistribute another label.It, should when not starting ring activation and for transannular LSP
Transannular LSP where go backup node is in stand-by state, only after activation message is received, makes transannular LSP from spare shape
State becomes working condition, carries out the forwarding of business, this is crossed for link point C1, can be regarded as one accessed from this node across
Ring LSP；After deactivation message is received, then transannular LSP is made to be restored to stand-by state from working condition.
Starting each work SPME CC＆CV, (Continuity Check＆Connectivity Verification connect
Continue property inspection and verified together with property) fault detection capability, when failures are detected, as shown in figure 3, detecting work in Ring 1
Make SPME (A-B-C) there are the protection SPME (A-A1-B1-C1-C) during failure, being then switched in ring, be transmitted to transannular LSP's
Next node C.
After protection SPME is switched to, when detecting that its corresponding protection SPME also breaks down, as shown in figure 4, working as
The link point A that enters of Ring1 detects or is communicated to shapes of the interior protection SPME of its ring there is also failure, then one cross-node of generation
State coordinates message, such as：APS (Automatic Protection Switching, automatic protection switching) or PSC
(Protection State Coordination Protocol, guard mode matchmaking protocol) or MC-APS (Multi-
Chasis-APS, across the APS messages of stent) etc., by the way that ring protection SPME (A-A1-B1-C1) was configured, it was sent to link
Point C1；After C1 nodes receive the state reconciliation message, then by originally C1 nodes be in stand-by state transannular LSP activation into
Working condition carries out the forwarding of transannular business or is directly forwarded according to the inside LSP label, as shown in Figure 4.Transannular business
After C1 node stand-by states are activated, C1 nodes can first pop up on the Ring 1 of packet outer layer SPME (A-B-C-D-E-F)
After crossing ring protection SPME (A-A1-B1-C1) label, the LSP label for carrying out the inside exchanges, and is then pressed on Ring 2 from C1 to E
In the work SPME (C1-D1-E1-E) of node, it is forwarded to egress E on Ring 2；Original working ways are then returned to later
Diameter is forwarded to the egress F of transannular business.
When interconnecting the failure of link point, as shown in figure 5, when interlink node C appearance between Ring 1 and Ring 2
During failure, when peer node A detects failure, first switch to and SPME (A-A1-B1-C1-C) is protected on Ring 1, then detect
It is also unavailable to protection SPME, then start ring protection SPME, as situation shown in Fig. 4, start ring protection.In node C1
On, the transannular LSP that can will be activated regards the transannular LSP service for entering ring from the node as.
In polycyclic interconnection, break down simultaneously when occurring work and protection SPME in some intermediate ring of interconnection
In the case of, as shown in fig. 6, work SPME (C-D-E) and protection SPME (C-C1-D1-E1-E) break down simultaneously in Ring 2
In the case of, then enter link point C on Ring 2 and started ring protection SPME (C-C1-D1-E1), generate the negotiation shape of a cross-node
State message is (such as：MC-APS etc.), be sent to link point E1, activation was in the transannular LSP paths of stand-by state originally, carry out across
The transmission of ring business.
When the SPME or protection SPME that works in ring becomes normal condition by malfunction, then enter link point again to ring excessively
Backup node send a deactivated state reconciliation message, so that the working condition of the transannular being configured LSP is become standby
With state, it is switched to the enterprising industry business transmission of work SPME or protection SPME in ring again.
To sum up, it may include steps of according to the transannular service protecting method of present example：
Step S702 is the monocyclic interior link configuration work of transannular LSP and Protection path；
Ring protection path was configured with interlink node for ring ingress in step S704；
Two rings are interconnected two nodes and are configured to mutual backup node by step S706, and label is consistent；
Step S708 runs CC＆CV in work and Protection path；
Step S710 judges operating path with the presence or absence of failure, if not, step S712 is gone to, if so, going to step
S714；
Step S712 carries out regular traffic forwarding, continues to run with CC＆CV；
Step S714 is switched to Protection path in ring；
Step S716 judges Protection path with the presence or absence of failure, if not, step S718 is gone to, if so, going to step
S720；
Step S718, Protection path transmits business in ring；
Step S720, judged ring protection path whether failure, if so, step S722 is gone to, if not, going to step
S724；
Step S722, did not started ring protection；
Step S724 started ring protection path, activation transannular LSP.
Fig. 8 is the structure diagram of transannular service protection device according to embodiments of the present invention.As shown in figure 8, according to this hair
The transannular service protection device of bright embodiment includes：
Path configuration module 82, for the configuration work path between the ingress and egress of each ring of transannular business
And Protection path；
Fault detection module 84 is connected to path configuration module 82, for controlling the node pair of each ring of transannular business
Operating path and Protection path in ring carry out fault detect；
Path handover module 86 is connected to fault detection module 84, for when detecting that operating path breaks down, inciting somebody to action
In service switching to the corresponding Protection path in above-mentioned fail operation path；
Node active module 88 is connected to fault detection module 84 and path handover module 86, for detecting protection
When path is also broken down, the corresponding backup node crossed on ring protection path in activation fail operation path, by crossing the standby protection of ring
Path bearer service.
It is mutual between two nodes (i.e. transannular node and transannular backup node) that two rings of above device profit interconnect
The protection of transannular business is realized in backup relation and ring part path.When event occurs for the operating path of some ring of transannular business
During barrier, the preferential Protection path bearer service using in ring when also failure has occurred in Protection path, then activates the failure ring mistake
Backup node (may be transannular node, it is also possible to transannular backup node) on ring protection path, by cross ring protection path Lai
Bearer service carries out the reception and forwarding of service message, continues transannular business, is protected so as to avoid existing transannular business
In shield, the problem of protection switching delay for needing to configure the end-to-end linear protection path of transannular and thus bringing is longer.
Preferably, path handover module 86 may further include：
Switching notice unit, for when detecting that operating path breaks down, control to detect fail operation path
Node sends state reconciliation message to the peer node in fail operation path, and the peer node is notified to be switched to fail operation path
Service message is sent or received on corresponding Protection path；
Active switch unit, for control detect fail operation path node be also switched on Protection path send or
Receive service message.
The node for detecting failure may be that ingress is also likely to be egress, when detecting that operating path breaks down
When, said units, which can control, detects that the node of failure needs to send state reconciliation message to peer node, notifies opposite end first
Node, which is switched on Protection path, to be sent or receives service message, and then control detects that the node oneself of failure is switched to protection
It is sent on path or receives service message, so as to ensure that business will not interrupt.
Preferably, node active module 88 may further include：
Message unit is activated, for when detecting that Protection path also breaks down, control fail operation path to be corresponding
The ingress of ring sends to activate environmentally friendly road maintenance to the corresponding backup node crossed on ring protection path in error protection path
The state reconciliation message of diameter；
Activate execution unit, for control and receive for activated ring protection path state reconciliation message it is excessively environmentally friendly
The transannular LSP on backup node activation backup node on road maintenance diameter makes transannular LSP be switched to working condition from stand-by state.
After two end node of failure ring is all switched to Protection path in ring, then detects and also break down on Protection path
When, then go out ingress at this time all in a kind of protection resource down state, so as to which service disconnection can be caused.Said units use
The mode that the ingress of control failure ring sends activation message cuts the transannular LSP crossed on the backup node on ring protection path
Shift to working condition, by transannular LSP come the means of bearer service, ensure that the progress of business, so as to no longer need to configure across
The end-to-end linear protection path of ring, and then eliminate the problem of protection switching delay thus brought is longer.
Preferably, node active module 88 can further include：
Message receiving unit, for the backup node reception on ring protection path to be controlled to be transmitted across from ring protection path is crossed
The service message come；
Tag switching unit is connected to message receiving unit, for controlling working as backup node pop-up service message outer layer
First SPME labels of front ring carry out transannular LSP label exchange；
Label is pressed into unit, is connected to Tag switching unit, for backup node to be controlled to be pressed into the SPME labels of next ring,
Service message is sent to the egress of next ring.
Said units ensure that service message smoothly sending and receiving in next ring.
Preferably, path handover module 86 can further include：
Message unit is deactivated, for after the Failure elimination of above-mentioned operating path or Protection path, controlling fail operation
The state reconciliation message that the ingress of the corresponding ring in path is used to deactivate to the backup node transmission crossed on ring protection path；
Execution unit is deactivated, is connected to deactivation message unit, for controlling and receiving the ring tunnel excessively being used to deactivate
The backup node crossed on ring protection path of state reconciliation message transannular LSP is switched to stand-by state from working condition, by
Above-mentioned operating path or Protection path continue bearer service.
Belong to emergent means due to the use of ring protection path bearer service is crossed, therefore, operating path or guarantor when failure ring
After having one to restore normal in road maintenance diameter, preferably service switching is gone back, uses the normal operating path of recovery or Protection path
This function can be completed in bearer service, said units.
It can be seen from the above description that technical solution provided by the invention can be to avoid the end-to-end of configuring cross-domain
Linear protection path, and can be switched fast, ensure that business carries out fast quick-recovery and protection.
Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general
Computing device realize that they can concentrate on single computing device or be distributed in multiple computing devices and be formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed in the storage device by computing device, and in some cases, it can be to be different from shown in sequence herein performs
The step of going out or describing they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or
Step is fabricated to single integrated circuit module to realize.It to be combined in this way, the present invention is not limited to any specific hardware and softwares.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of transannular service protecting method, which is characterized in that including：
Configuration work path and Protection path between the ingress and egress of each ring of the transannular business；
Fault detect is carried out to the operating path in each ring of the transannular business and Protection path；
It, will be in service switching to the corresponding Protection path in the fail operation path when detecting that operating path breaks down；
When detecting that the Protection path also breaks down, activate the fail operation path is corresponding to cross on ring protection path
Backup node, by the ring protection path crossed come bearer service；
Wherein, when detecting that the Protection path also breaks down, activate the fail operation path is corresponding to cross ring protection
Backup node on path includes：
When detecting that the Protection path also breaks down, the ingress of the corresponding ring in the fail operation path is to the mistake
Backup node on ring protection path sends the state reconciliation message for activating ring protection path；
The backup node crossed on ring protection path receives the state reconciliation message for being used to activate ring protection path, swashs
Transannular label switching path LSP on the backup node living, makes the transannular LSP be switched to working condition from stand-by state.
2. according to the method described in claim 1, it is characterized in that, when detecting that operating path breaks down, business is cut
It changes on the corresponding Protection path in the fail operation path and includes：
When detecting that operating path breaks down, detect the node in the fail operation path to the fail operation path
Peer node send state reconciliation message, notify the peer node be switched on the Protection path send or receive business report
Text；
Detect that the node in the fail operation path is also switched to that service message is sent or received on the Protection path.
3. according to the method described in claim 1, it is characterized in that, included by the ring protection path bearer service of crossing：
The backup node crossed on ring protection path is received from the service message crossed ring protection path and sended over；
Pop up the service message outer layer when the subpath maintenance entity SPME labels of front ring, carry out transannular LSP label exchange；
The SPME labels of next ring are pressed into, the service message is sent to the egress of next ring.
4. method according to any one of claims 1 to 3, which is characterized in that corresponded to activating the fail operation path
The backup node crossed on ring protection path, by it is described cross ring protection path bearer service after, further include：
After the Failure elimination of the operating path or the Protection path, the ingress of the corresponding ring in the fail operation path
The state reconciliation message being used to deactivate to the backup node transmission crossed on ring protection path；
The backup node crossed on ring protection path receive described in the state reconciliation message that is used to deactivate, by transannular LSP from
Working condition is switched to stand-by state, continues bearer service by the operating path or the Protection path.
5. method according to any one of claims 1 to 3, which is characterized in that the transannular of each ring of the transannular business
Node is virtually a node with transannular backup node, and the transannular node of each ring of the transannular business is saved with transannular backup
Point is synchronous with holding in operating path status information in label information.
6. a kind of transannular service protection device, which is characterized in that including：
Path configuration module, between the ingress and egress of each ring of the transannular business configuration work path and
Protection path；
Fault detection module, for controlling the node of each ring of the transannular business to the operating path and Protection path in ring
Carry out fault detect；
Path handover module, for when detecting that operating path breaks down, by service switching to the fail operation path
On corresponding Protection path；
Node active module, for when detecting that the Protection path also breaks down, activating the fail operation path pair
That answers crosses the backup node on ring protection path, and ring protection path bearer service is crossed by described；
The node active module includes：
Message unit is activated, for when detecting that the Protection path also breaks down, controlling the fail operation path pair
The ingress for the ring answered sends to activate to the corresponding backup node crossed on ring protection path in the error protection path
The state reconciliation message in ring protection path；
Execution unit is activated, for controlling and receiving the mistake of the state reconciliation message for being used to activate ring protection path
Backup node on ring protection path activate the transannular label switching path LSP on the backup node make the transannular LSP from
Stand-by state is switched to working condition.
7. device according to claim 6, which is characterized in that the path handover module includes：
Switching notice unit, for when detecting that operating path breaks down, control to detect the fail operation path
Node sends state reconciliation message to the peer node in the fail operation path, and the peer node is notified to be switched to the failure
Service message is sent or received on the corresponding Protection path of operating path；
Active switch unit detects that the node in the fail operation path is also switched to send out on the Protection path for controlling
Send or receive service message.
8. device according to claim 6, which is characterized in that the node active module further includes：
Message receiving unit crosses ring protection path hair for the backup node crossed on ring protection path to be controlled to receive from described
The service message brought；
Tag switching unit, for control the backup node pop up the service message outer layer when the subpath maintenance of front ring
Entity SPME labels carry out transannular LSP label exchange；
Label is pressed into unit, and for the backup node to be controlled to be pressed into the SPME labels of next ring, the service message is sent
To the egress of next ring.
9. according to claim 6 to 8 any one of them device, which is characterized in that the path handover module further includes：
Message unit is deactivated, for after the Failure elimination of the operating path or the Protection path, controlling the failure
The state association that the ingress of the corresponding ring of operating path is used to deactivate to the backup node transmission crossed on ring protection path
Adjust message；
Execution unit is deactivated, for controlling and receiving described in the state reconciliation message for crossing ring tunnel being used to deactivate
Transannular LSP is switched to stand-by state by the backup node crossed on ring protection path from working condition, by the operating path or institute
It states Protection path and continues bearer service.
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| WO2021217424A1 (en) * | 2020-04-28 | 2021-11-04 | Nokia Shanghai Bell Co., Ltd. | Backup traffic handling |
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| CN101262399B (en) * | 2007-03-08 | 2011-09-14 | 华为技术有限公司 | A cross-loop RPR two point failure processing method and system |
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