CN101138197A - Fast recovery method of automatic exchange optical network - Google Patents
Fast recovery method of automatic exchange optical network Download PDFInfo
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- CN101138197A CN101138197A CN200580048964.2A CN200580048964A CN101138197A CN 101138197 A CN101138197 A CN 101138197A CN 200580048964 A CN200580048964 A CN 200580048964A CN 101138197 A CN101138197 A CN 101138197A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
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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
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
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Abstract
The key of the rapid restoration method for ASON of present invention is that the neighbor element of fault link searches the local restoration route to accomplish the restoration process of fault service connection according to the fault of the service layer link. The method comprises that each network element among the network detects the alert condition of all the links of its own realtimely; when the related link fault is detected, the current network element searches the restoration route which isn't correlate with the fault link on the premise of the fault link capacity with the current network element to be the source and the another neighbor element of the fault link to be the destination; and the current network element starts the restoration operation according to the restoration route. The scheme of the present invention utilizes the mechanism that the link fault triggers the signal of the client layer to restoration automatically, which avoids the disadvantages that the preset route is not flexible enough and the present auto restoration method is too slow and doesn't have enough reliability, and the scheme of the present invention has the advantages of speed, reliability and flexibility.
Description
The quick recovery method technical field of ASON
The present invention relates to the quick recovery method of field of optical networks, more particularly to ASON.Background technology
Optical-fiber network, such as optical transport network（Optical transmission network, OTTSi), wavelength-division multiplex (Wavelength-division multiplexing, WDM), Synchronous Digital Hierarchy (Synchronous digital hierarchy) (hereinafter referred to as SDH) or Synchronous Optical Network（Synchronous optical network) (hereinafter referred to as SONET) transmission net, it has been used widely in field of telecommunications.
ASON（Automatic switched optical network) (hereinafter referred to as ASON) be field of optical networks in recent years study hotspot.International Telecommunication Association ITU-TG.8080 and G.771X series suggestion propose ASON concept, the special control plane by setting（Control plane) the automatic foundation of (hereinafter referred to as CP) finishing service connection, the function such as automatic recovery of connection.
Self-healing ability is an important feature of optical-fiber network.International Telecommunication Association's ITU-TG.841 suggestions《The classification of SDH network protection structure and characteristic》SDH/SONET optical transfer network self-healing functions are described in detail.Its guard method recommended includes being based on path（Path protection) and based on link（Link protection).Based on path（Path protection), it is most common to have path protection and SNCP；Based on link（Link protection), it is most common to have two fine or Four-fiber MS shared protection ring, 1+1/1:N Linear multiplex section links etc..Path protection, multiplex section protection have obtained application widely in conventional optical network, but for complex networks such as mesh networks, above-mentioned protected mode takes a large amount of standby resources and is no longer appropriate for.
So, it is general that self-healing function is realized using reset mode for mesh network.There are two kinds of restoration methods to obtain wide application at present：Preset route recovery method and automatic heavy route method.
Preset route recovery method, such as 1+1 or 1:N.While being mainly characterized by of this restoration methods sets up work connection for customer service, reserved recovery connection is set up.When the connection that works is broken down, the recovery connection reserved by starting recovers customer service.The 1+1/1 of this restoration methods and G.841 proposed recommendations:The protected modes such as N Linear multiplex section links are similar.
Automatic heavy route method is that ASON recommends, for solving optical-fiber network, especially mesh network, the automatic effective ways for recovering problem.Its general principle is：After service connection failure, the network element base in heavy-route domain
In its control plane, the methods such as source routing, hop-by-hop route or hierarchical routing are used to find connection, the automatic recovery of finishing service again for customer service.
Preset route recovery method as described in the United States Patent (USP) of Patent No. 20040190446, resume speed is very fast, but for portfolio rapid development, the network that traffic scheduling is frequent, service dynamic performance requirement is higher, its preset route needs frequent updating, Dynamic Maintenance, the automatic recovery advocated with current ASON networks compares, and flexibility seems not enough.Six network element mesh networks as shown in Figure 1, if the initialization path of business is A-F-C between A-B-C, when A-B link and F-C link simultaneous faults, A-B-C business recoveries failure.
Automatically restoring flow feature shown in Fig. 2 is in Routing information database（Route Data Base) (hereinafter referred to as RDB) renewal starts business recovery, this restoration methods reliability height based on newest RDB after completing, but failure broadcast and RDB renewals cause the larger delay of service recovery time.For catenet, postpone more obvious. '
Automatically restoring flow feature shown in Fig. 3 is to position to search for the incoherent restoration route of faulty link to recover to be connected to realize business recovery to set up based on accurate link failure.Link failure location technology comparative maturity, for example, position failure using transport plane alarm correlation analysis.This restoration methods can recover reliability higher as far as possible using the resource of non-faulting link.But fault location again results in the larger delay of service recovery time.If service connection path is longer, link capacity is larger, when warning information amount is larger, postpones more obvious.
The automatic recovery method in ASON networks described in the Chinese patent of Patent No. 02123980.0 and 03114810.7 follows the automatic recovery of flow finishing service as shown in Figure 4 substantially.This restoration methods overcome RDB renewals or failure are accurately positioned caused recovery delay to avoid former service path as constraints search restoration route, but for small-/medium-sized Intranet, the reliability of its recovery is relatively low.Four network element mesh networks for example shown in Fig. 5, for the service connection that service path is A-B-C-D, in A-B, B-C or tri- links of C-D, any link failure, recovery can all fail.
Optical network structure as defined in International Telecommunication Association's ITU-TG.805 suggestions, which belongs to, belongs to client/server relationship between hierarchical network, layer network.Client layer signal transmittance process is：Client layer signal is fitted into service layer's link by upper business network element, is transmitted by service layer's link between multiple network elements, finally reaches lower business network element, and lower business network element parses client layer signal from service layer's link.Fig. 6 describes client layer signal S from network element A through service layer link L3 is delivered to network element D frame structure between service layer link L2, CD between service layer's link LI, BC between AB.
Generally, service layer's network failure, i.e. service layer's link failure, trigger client layer signal failure.From the point of view of alarm-monitor mechanism, the alarm of this layer signal can be detected and determined in the network element of layer network signal termination and regeneration.So, if Fig. 6 link L2 failures, network element B, C can monitor L2 fault state immediately.L2 failures trigger client layer signal S failures, but because of failure at link Ll, L2, L3 any of which one, can trigger S failures.Therefore, if single from client layer, any one network element on client layer signal path not can determine that specific abort situation.Just because of this, just there is the implementation of the automatic recovery methods such as Fig. 2,3,4.The content of the invention
It is an object of the invention to overcome, traditional protection takes resource, preset route recovery flexibility is inadequate, existing automatic recovery method speed is slow, the low shortcoming of reliability, and proposition can take into account speed, reliability and the optical transfer network of flexibility quick recovery method. .
The core concept of the present invention is to be based on service layer's link failure, and the recovery process for completing failure service connection is route by faulty link adjacent net Meta Search Engine local recovery.In order to simplify the link occurred in description, hereinbelow and accompanying drawing all referring to service layer's link.
The quick recovery method of a kind of ASON proposed by the present invention, at least including Link resource manager（Link resource manager) (hereinafter referred to as LRM), connection controller（Connection controller) (hereinafter referred to as CC), path control deivce（Route controller) standard package such as (hereinafter referred to as RC) and protocol controller (Protocol controller) (hereinafter referred to as PC), it is characterized in that based on service layer's link failure, comprising the following steps：
Step 1: each network element detects the alert situation of all links of this network element in real time in network；If detecting relevant link failure, local network element notices fault message to another adjacent network element of faulty link and is transferred to step 2；If detecting link fault announcing information, step 2 is directly transferred to；
Step 2: each service connection of LAN Meta Search Engine faulty link carrying, if there is the service connection for needing to recover, then into step 3, is otherwise transferred to step one；
Step 3: being related service connection search and the incoherent restoration route of faulty link for the purpose of another adjacent network element of faulty link using local network element as source.According to restoration route, local network element starts recovery operation and return to step two.
Wherein, this method needs newly-built recovery linking number to be the former service connection number for needing to recover；I.e. each industry
Business need to distinguish newly-built recovery connection.
The present invention also proposes a kind of quick recovery method of ASON, the standard package at least including LRM, CC, RC and PC etc., it is characterised in that based on service layer's link failure, comprise the following steps：
Step one：Each network element detects the alert situation of all links of this network element in real time in network；If detecting relevant link failure, local network element notices fault message to another adjacent network element of faulty link and is transferred to step 2；If detecting link fault announcing information, step 2 is directly transferred to；
Step 2：Each service connection of LAN Meta Search Engine faulty link carrying, calculating needs the total capacity of recovery business.Capacity enters step 2 more than zero, is otherwise transferred to step one；
Step 3：Using local network element as source, for the purpose of another adjacent network element of faulty link, to need the client signal total capacity of recovery as conditional search and the incoherent restoration route of faulty link.According to restoration route, local network element starts recovery operation and return to step two.
Wherein, this method is to need the capacity of recovery business to need newly-built one to recover to connect as condition, only；Multiple service combinings are got up newly-built one to recover to connect.
The present invention also proposes a kind of quick recovery method of ASON, the standard package at least including LRM, CC, RC and PC etc., it is characterised in that based on service layer's link failure, comprise the following steps：
Step one：Each network element detects the alert situation of all links of this network element in real time in network；If detecting relevant link failure, step 2 is transferred to；
Step 2：Local network element is using this network element as source, for the purpose of another adjacent network element of faulty link, by conditional search of faulty link capacity with the incoherent restoration route of faulty link.According to restoration route, local network element starts recovery operation and return to step one.
Wherein, this method is to need to recover link capacity as condition, and recovery process does not further relate to link layer institute bearer service signal, only needs newly-built one to recover connection；Business is not considered further that and directly newly-built one is recovered connection.Above two methods compare, and this method is most succinct.
In these above-mentioned methods, above-mentioned LRM completes the detection and management of chain circuit alarming and chain circuit alarming advertised information, and is responsible for link failure information notifying CC;CC according to the protection of service connection with recovering attribute, the restoration route inquiry of startup separator service connection, and according to RC returning result, starts PC according to chain circuit alarming;LRM completes resource reservation and revocation work according to Signalling exchange result.
The above-mentioned three kinds of methods of the present invention are used triggers the mechanism that client layer signal recovers automatically based on link failure, it is to avoid preset route recovery flexibility not enough, the automatic recovery method speed such as Fig. 2, Fig. 3, Fig. 4 it is slow, reliable
The low shortcoming of property, possesses and takes into account speed, reliability and the advantage of flexibility.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and coordinate Figure of description, it is described in detail below.Brief description of the drawings
Fig. 1 is the mesh network structure chart for including six network elements；
Fig. 2 is the automatic recovery method flow chart using alert broadcast mechanism；
Fig. 3 is the automatic recovery method flow chart using fault localization mechanism；
' Fig. 4 is automatic recovery method flow chart using CR- LDP mechanism；
Fig. 5 is the mesh network structure chart for including four network elements；
Fig. 6 is optical-fiber network client signal transfer structure chart；
Fig. 7 is technical solution of the present invention functional structure chart；
Fig. 8 is technical solution of the present invention flow chart.
Fig. 9 is the technical scheme flow chart that the present invention simplifies.
Figure 10 is the technical scheme flow chart that the present invention further simplifies.Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6 had carried out explanation in the introduction.
Fig. 7 is technical solution of the present invention functional structure chart, and G.8080 technical solution of the present invention advises the standard package of the CP, including LRM, CC, RC, PC using International Telecommunication Association ITU-T.Relation between each unit is as shown in Figure 7.LRM completes detection and the management function of chain circuit alarming or chain circuit alarming advertised information, and is responsible for link failure information notifying CC.LRM receives PC request simultaneously, completes resource reservation or revocation work.CC is used to managing and controlling existing service connection, according to current ink alarm, according to the protection of service connection with recovering attribute, the restoration route inquiry of startup separator service connection, and according to RC returning result, starts PC.The Check that RC receives CC askes request, based on current RDB, starts router-level topology, and return to result of calculation.Request is set up in the recovery connection that PC receives CC, completes the Signalling exchange with other network elements on restoration path, and start LRM.
Fig. 8 is the flow chart of technical solution of the present invention, and Fig. 9 is the flow chart for the technical scheme that the present invention simplifies,
Figure 10 is the technical scheme flow chart that the present invention further simplifies.
With reference to Fig. 8, with SDH network transmission A-B-C-D, D-C-B business 1 and D-C-B business 2 of Fig. 1 network structures, after the receipts fiber failure in B-C link B directions, exemplified by the recovery process using source routing mode, illustrate specific embodiments of the present invention.In addition in order to describe in detail, it is special in case：Business A-B-C-D takes 1 passage, and the 5# passages that 5# passages, the C-D links that 5# passages, the B-C links provided through A-B link is provided are provided are transmitted；D-C-B business 1 takes 1 passage, and the 6# passages that 6# passages, the C-B link provided through D-C links is provided are transmitted；D-C-B business 2 takes 1 passage, and the 7# passages that 7# passages, the C-B link provided through D-C links is provided are transmitted；The 3# passages of B-F links are idle, and the 4# passages of F-C links are idle, and the 5# of C-E links, 6# passages are idle, and the 5# passages of E-B links are idle, and the 5# passages of E-F links are idle, and the 4# passages of F-B link are idle.
Specific embodiment comprises the following steps：
Step 1: network element A, B, C, D, E and F LRM detect the alert situation of each link of this network element in real time；Network element B monitors the receipts fiber failure in local network element B-C section B directions.Network element B notices failure to network element C.
Step 2: network element B notifies the fault message of CC relevant links by LRM；The client traffic of CC search B-C section carryings, searches eligible A-B-C-D business, 5# channel sections is taken in B-C sections；
Step 3: is in network element B, using B as source, for the purpose of C, CC sends route Check to RC and askes request.RC inquires about the RDB of this network element, obtains routeing B-F-C, B-F section 3# passages, F-C section 4# passages.
Step 4: the route that CC is returned according to RC, starts PC and network element F, network element C PC completes signalling interactive process.Meanwhile, network element B, F, C PC are worked by calling respective LRM to complete resource reservation.Former A-B-C-D business is restored, and the service path after recovery is A-B-F-C-D.
Step 5: network element B is noticed after failure to network element C in step one, network element C receives the alarm advertised information that B transmission comes, in a similar manner afterwards, is D-C-B business 1, and business 2 performs above-mentioned steps two, Step 3: step 4.Finally, former D-C-B business 1 is restored, and the service path after recovery is D-C-E-F-B.Business takes 5# passages in C-E sections, and E-F sections take 5# passages, and F-B takes 4# passages.Former D-C-B business 2 is restored, and the service path after recovery is D-C-E-B.Business takes 6# passages in C-E sections, and E-B sections take 5# passages.'
If using flow described in Fig. 2, receipts fiber failures of the business A-B-C-D in B-C section B directions
Afterwards, network element A could start recovery after receiving network element B fault message broadcast message.Compared with the inventive method, this method needs to wait RDB renewal after failure is monitored, speed is slower.In addition, the source and destination of this method router-level topology remains as original A, D, RC router-level topology convergence rate is relatively slow.
If using flow described in Fig. 3, business A-B-C-D after the receipts fiber failure in B-C section B directions, network element A must first startup separator positioning function, be only only possible to successfully recover business after fault location.Compared with the inventive method, this method is needed to wait fault location result, and fault location speed is collected dependent on service path warning information, the efficiencies of correlation analysis algorithm, and speed is slower.Equally, the source and destination of this method router-level topology remain as to enter originally, D, RC router-level topology convergence rate is relatively slow.
If using flow described in Fig. 4, then business A-B-C-D is after the receipts fiber failure in B-C section B directions, network element A is to avoid former service path A-B-C-D as constraints search restoration route, restoration path A-F-E-D can be obtained, but former non-faulting section A-B, C-D resource can not be multiplexed.Equally, for D-C-B business, network element D can obtain restoration path D-E-F-B, but can not be multiplexed former non-faulting section D-C resource to avoid former service path D-C-B as constraints search restoration route.Because this restoration methods can not be multiplexed the resource of non-faulting section on former service path to greatest extent, therefore the reliability recovered is substantially reduced.For example, if A-F, F-E, E-D, F-B idling-resource are not enough, the restoration methods fail, and the inventive method can be successfully recovered.Equally, for network shown in Fig. 5, if service path is A-B-C-D, when B-C section faults, the failure of this restoration methods.And the inventive method can find A-B-A-C-D restoration paths.
Compared with preset route recovery method, the inventive method is started using the method for search route in real time and recovered, dynamic property and better reliability.
With reference to Fig. 9, with the SDH network of Fig. 1 network structures after the receipts fiber failure in B-C link B directions, exemplified by the recovery process using source routing mode, illustrate the detailed embodiment after of the invention simplify.In addition it is special in case there is following business in order to describe in detail：A transmits 2 business, A through 1 business of B to C transmission, D through C to B 2 business of transmission through network element B, C to D.
Wherein, along A-B-C-D 2 business, every business takes 1 passage, and 5#, 6# passage that 5#, 6# passage, the C-D links that 5#, 6# passage, the B-C links provided through A- B links is provided are provided are transmitted；1 passage is taken along A-B-C 1 business, the 7# that 7# passages, the B-C links provided through A-B link is provided leads to powerful transmission；Along D-C-B 2 business, every business takes 1 passage, through D-C
8#, 9# passage transmission that 8#, 9# passage, C-B link of link offer are provided；10 ~ 12# passages of B-F links are idle, and 10 ~ 12# passages of F-C links are idle；The 10# of C-E links, 11# passages are idle, the 10# of E-B link, and 11# passages are idle.
Specific embodiment comprises the following steps-Step 1: network element A, B, C, D, E and F LRM detect the alert situation of each link of this network element in real time；Network element B monitors the receipts fiber failure in local network element B-C section B directions.Network element B notices failure to network element C.
Step 2: network element B notifies the fault message of CC relevant links by LRM；The client traffic of CC search B-C section carryings, calculating needs the business total capacity recovered to be 3 passages；
Step 3: in network element B, using B as source, for the purpose of C, routing inquiry request is sent to RC to search 3 channel C C.RC inquires about the RDB of this network element, obtains routeing B-F-C, 10#, 11#, 12# passage of B-F links, 10#, 11#, 12# passage of F-C links.
Step 4: the route that CC is returned according to RC, starts PC and network element F, network element C PC completes signalling interactive process.Meanwhile, network element B, F, C PC are worked by calling respective LRM to complete resource reservation.2 business that original is transmitted along A-B-C-D, it is restored along the business that A-B-C is transmitted, the service path after recovery is respectively A-B-F-C-D, A-B-F-C.
Step 5: network element B is noticed after failure to network element C in step one, network element C receives the alarm advertised information that B transmission comes, and performs above-mentioned steps two in a similar manner afterwards, Step 3: step 4.Finally, it is restored along 2 business that D-C-B is transmitted, the service path after recovery is all D-C-E-B.Business takes 10#, 11# passage in C-E sections, and 10#, 1 Fiber roads are taken in E-B.
Compared with flow shown in Fig. 8, Fig. 9 flow is simplified to searching for route, setting up connection, and implementation and resume speed are more preferable.
With reference to Figure 10, with the SDH network of Fig. 1 network structures after the receipts fiber failure in B-C link B directions, exemplified by the recovery process using source routing mode, illustrate the detailed embodiment that the present invention further simplifies.In addition in order to describe in detail, it is special in case：B-C link capacities are N, and it is Ml that A takes capacity through network element B, C to the D business transmitted, and it is M2 that D takes capacity through C to the B business transmitted.And M1+M2< = N.There is the link that an idle capacity is N in B-F sections, C-F sections have the link that an idle capacity is N.
Specific embodiment comprises the following steps：
Step 1: network element A, B, C, D, E and F LRM detect the alert situation of each link of this network element in real time；Network element B monitors local network element B-C link failures.
Step 2: network element B notifies the fault message of CC relevant links by LRM；Using B as source, for the purpose of C, idle capacity as N link is looked for be condition using Check, CC sends routing inquiry request to RC.RC Check ask the RDB of this network element, obtain routeing B-F-C.
Step 3: the route that CC is returned according to RC, starts PC and network element F, network element C PC completes signalling interactive process.Meanwhile, network element B, F, C PC are worked by calling respective LRM to complete resource reservation.
The former business transmitted along A-B-C-D, the business transmitted along D-C-B are all restored, and the service path after recovery is A-B-F-C-D, D-C-F-B respectively.
Compared with flow shown in Fig. 8, Fig. 9, Figure 10 flow need not notice failure to another network element of faulty link, while further being simplified to searching for route, setting up connection, more preferably, resume speed is faster for implementation.
Described from above-mentioned implementation process and contrast, three kinds of technical schemes of the invention can be further to define and had the following advantages that：
1st, faulty link two ends network element is exactly to recover to start network element, it is not necessary to carry out fault location；Based on local original RDB, it is not necessary to wait RDB to update；
2nd, using the adjacent network element of faulty link as source and destination, router-level topology fast convergence rate；
3rd, the inventive method disclosure satisfy that the recovery requirement of any complex network.And network is more complicated, the restoration path of the inventive method will be shorter, and recovering efficiency will be higher.
In short, compared with existing restoration methods, the advantages of the inventive method takes into account speed, possesses reliable, flexible.
The operation principle of the present invention has been described in detail above, and gives several typical network structure flows, but this is only to facilitate the example for the visualization for understanding and lifting, is not construed as limiting the scope of the present invention.Equally, the description of technique according to the invention scheme and its preferred embodiment, can make various possible equivalent changes or replacement, and all these changes or replacement should all belong to the protection domain of appended claims of the present invention.
Claims (9)
- Claim1st, a kind of quick recovery method of ASON, at least including Link resource manager（LRM controller), is connected（CC), path control deivce（) and protocol controller RC（PC) standard package, it is characterised in that based on service layer's link failure, comprise the following steps-Step 1: each network element detects the alert situation of all links of this network element in real time in network；If detecting relevant link failure, local network element notices fault message to another adjacent network element of faulty link and is transferred to step 2；If detecting link fault announcing information, step 2 is directly transferred to；Step 2: each service connection of LAN Meta Search Engine faulty link carrying, if there is the service connection for needing to recover, then into step 3, is otherwise transferred to step one；Step 3: being related service connection search and the incoherent restoration route of faulty link for the purpose of another adjacent network element of faulty link using local network element as source.According to restoration route, local network element starts recovery operation and return to step two.2nd, according to the method described in claim 1, it is characterised in that above-mentioned Link resource manager（LRM the detection and management of chain circuit alarming and chain circuit alarming advertised information) are completed, and is responsible for link failure information notifying connection controller（CC);Connect controller（CC) according to chain circuit alarming, inquired about according to the protection of service connection with recovering attribute, the restoration route of startup separator service connection, and according to path control deivce（RC returning result), starts protocol controller（PC);Link resource manager（LRM resource reservation and revocation work) are completed according to Signalling exchange result.3rd, according to the method described in claim 1, it is characterised in that this method needs newly-built recovery linking number to be the former service connection number for needing to recover, i.e., each business need to distinguish newly-built recovery connection.4th, a kind of quick recovery method of ASON, at least including Link resource manager（LRM controller), is connected（CC), path control deivce（) and protocol controller RC（PC) standard package, it is characterised in that based on service layer's link failure, comprise the following steps：Step one：Each network element detects the alert situation of all links of this network element in real time in network；If detecting relevant link failure, local network element notices fault message to another adjacent network element of faulty link and is transferred to step 2；If detecting link fault announcing information, step 2 is directly transferred to；Step 2：Each service connection of LAN Meta Search Engine faulty link carrying, calculating needs the total capacity of recovery business.Capacity enters step 2 more than zero, is otherwise transferred to step one； Step 3：Using local network element as source, for the purpose of another adjacent network element of faulty link, to need the client signal total capacity of recovery as conditional search and the incoherent restoration route of faulty link.According to restoration route, local network element starts recovery operation and return to step two.5th, method according to claim 4, it is characterised in that above-mentioned Link resource manager（LRM the detection and management of chain circuit alarming and chain circuit alarming advertised information) are completed, and is responsible for link failure information notifying connection controller（CC);Connect controller（CC) according to chain circuit alarming, inquired about according to the protection of service connection with recovering attribute, the restoration route of startup separator service connection, and according to path control deivce（RC returning result), starts protocol controller（PC);Link resource manager（LRM resource reservation and revocation work) are completed according to Signalling exchange result.6th, method according to claim 4, it is characterised in that multiple service combinings are got up newly-built one to recover to connect by this method to need the capacity of recovery business to need newly-built one to recover to connect as condition, only.7th, a kind of quick recovery method of ASON, at least including Link resource manager（LRM controller), is connected（CC), path control deivce（) and protocol controller RC（PC) standard package, it is characterised in that based on service layer's link failure, comprise the following steps：Step one：Each network element detects the alert situation of all links of this network element in real time in network；If detecting relevant link failure, step 2 is transferred to；Step 2：Local network element is using this network element as source, for the purpose of another adjacent network element of faulty link, by conditional search of faulty link capacity with the incoherent restoration route of faulty link.According to restoration route, local network element starts recovery operation and return to step one.8th, method according to claim 7, it is characterised in that above-mentioned Link resource manager（LRM the detection and management of chain circuit alarming and chain circuit alarming advertised information) are completed, and is responsible for link failure information notifying connection controller（CC);Connect controller（CC) according to chain circuit alarming, ask according to the protection of service connection with recovering attribute, the restoration route Check of startup separator service connection, and according to path control deivce（RC returning result), starts protocol controller（PC);Link resource manager（LRM resource reservation and revocation work) are completed according to Signalling exchange result.9th, method according to claim 7, it is characterized in that this method is to need to recover link capacity as condition, recovery process does not further relate to link layer institute bearer service signal, only needs newly-built one to recover connection, i.e., do not consider further that business and directly newly-built one is recovered to connect.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2005/000609 WO2006116896A1 (en) | 2005-04-30 | 2005-04-30 | Rapid restoration method for ason |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101138197A true CN101138197A (en) | 2008-03-05 |
| CN100550764C CN100550764C (en) | 2009-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200580048964.2A Expired - Fee Related CN100550764C (en) | 2005-04-30 | 2005-04-30 | The quick recovery method of ASON |
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| Country | Link |
|---|---|
| CN (1) | CN100550764C (en) |
| WO (1) | WO2006116896A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684909A (en) * | 2011-03-04 | 2012-09-19 | 日本电气株式会社 | A server, a method, a system and a program thereof |
| CN107040306A (en) * | 2017-03-14 | 2017-08-11 | 重庆邮电大学 | Maintain the optical-fiber network of service reliability grade is anti-to ruin algorithm under a kind of disaster state |
| CN113824595A (en) * | 2021-09-29 | 2021-12-21 | 联想(北京)有限公司 | Link switching control method and device and gateway equipment |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100589416C (en) * | 2007-10-30 | 2010-02-10 | 中兴通讯股份有限公司 | A maintenance method upon service alarm generation in automatic switching optical network system |
| CN115550131A (en) * | 2021-06-30 | 2022-12-30 | 中兴通讯股份有限公司 | Fault processing method, device, storage medium and electronic device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1159851A1 (en) * | 2000-01-07 | 2001-12-05 | Alcatel | Telecommunications network distributed restoration methods and systems |
| US6934248B1 (en) * | 2000-07-20 | 2005-08-23 | Nortel Networks Limited | Apparatus and method for optical communication protection |
| CN1319320C (en) * | 2002-10-22 | 2007-05-30 | 华为技术有限公司 | Method for realizing link state feed-through in network |
-
2005
- 2005-04-30 WO PCT/CN2005/000609 patent/WO2006116896A1/en not_active Application Discontinuation
- 2005-04-30 CN CN200580048964.2A patent/CN100550764C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684909A (en) * | 2011-03-04 | 2012-09-19 | 日本电气株式会社 | A server, a method, a system and a program thereof |
| CN102684909B (en) * | 2011-03-04 | 2017-09-08 | 日本电气株式会社 | network monitoring and recovery support method, system and server |
| CN107040306A (en) * | 2017-03-14 | 2017-08-11 | 重庆邮电大学 | Maintain the optical-fiber network of service reliability grade is anti-to ruin algorithm under a kind of disaster state |
| CN107040306B (en) * | 2017-03-14 | 2019-03-08 | 重庆邮电大学 | The anti-damage method of optical-fiber network of service reliability grade is maintained under a kind of disaster state |
| CN113824595A (en) * | 2021-09-29 | 2021-12-21 | 联想(北京)有限公司 | Link switching control method and device and gateway equipment |
| CN113824595B (en) * | 2021-09-29 | 2022-11-22 | 联想(北京)有限公司 | Link switching control method and device and gateway equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006116896A1 (en) | 2006-11-09 |
| CN100550764C (en) | 2009-10-14 |
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