CN101729936B - Connection restoration method and routing domain of automatic exchange optical network - Google Patents
Connection restoration method and routing domain of automatic exchange optical network Download PDFInfo
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- CN101729936B CN101729936B CN200810174662.5A CN200810174662A CN101729936B CN 101729936 B CN101729936 B CN 101729936B CN 200810174662 A CN200810174662 A CN 200810174662A CN 101729936 B CN101729936 B CN 101729936B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/62—Wavelength based
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/14—Monitoring arrangements
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
- H04L45/04—Interdomain routing, e.g. hierarchical routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
- H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Environmental & Geological Engineering (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention provides a connection restoration method and a routing domain of an automatic exchange optical network. The routing domain of the automatic exchange optical network is a protection domain or restoration domain; the routing domains have the inclusion relation; when a certain routing domain breaks down and fails to be restored, the routing domain informs the larger routing domain containing the routing domain, and the larger routing domain carries out the connection restoration. The method and the routing domain of the invention can enhance the efficiency for completing the connection fault restoration by combining protection and restoration.
Description
Technical field
The present invention relates to field of optical networks, be specifically related to ASON and connect restorative procedure and routed domain.
Background technology
Optical-fiber network, OTN (Optical transmission network for example, optical transport network), WDM (Wavelength-division multiplexing, wavelength division multiplexing), SDH (Synchronous digitalhierarchy, synchronous digital hierarchy) or SONET (Synchronous optical network, Synchronous Optical Network) transport network, is used widely at field of telecommunications.
ASON (Automatic switched optical network, be called for short ASON) is the study hotspot of field of optical networks in recent years.G.8080, ITU-T advises having proposed the concept of ASON, completes the function of ASON network by special control plane (Control plane is called for short CP) is set.Protection and recovery are the technology that guarantees connection availability, are also the key technologies in ASON, have clearly definition in ITU-TG.8080.
G.8080, ITU-T is described later in detail (Intra Domain) restoration methods between territory, comprise hard heavy-route (Hard Rerouting) and two kinds of reset modes of soft heavy-route (Soft Rerouting), for recovering coordination mechanism between multiple domain, provide implementation framework.
Yet, the ITU-T promulgating now G.8080 and ITU-TG.7715 all do not mention the inclusion relation (Containment relationship) between restoration route territory and protection routed domain, there is no protection and recovery in conjunction with relevant description yet.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of connection restorative procedure and ASON routed domain of ASON, to have improved by protecting with the combination recovering the efficiency that is connected fault restoration.
In order to address the above problem; the invention provides a kind of connection restorative procedure of ASON; the routed domain of described ASON is protected field or recovers territory; between routed domain, there is inclusion relation; when certain routed domain breaks down and connects cannot repair time; this routed domain notification package, containing the larger routed domain of this routed domain, connects reparation by this larger routed domain.
Further, the method comprises:
(a) certain routed domain detects connection fault;
(b) described routed domain connects reparation, if connect, repairs successfully, and flow process finishes, otherwise goes to step (c);
(c) the larger routed domain of failure message notification package containing this routed domain will be connected;
(d) if this larger routed domain is maximum routed domain and connection repairs successfully, flow process finishes, otherwise notifies user to connect repairing failure, if this larger routed domain is not jump procedure (b) of maximum routed domain.
Further, routed domain described in step (b) connects while repairing, and first by connecting fault message, notifies source node and the destination node of described routed domain, then is taked protection or recover action to be connected to repair by source node and destination node.
Further, the connection restorative procedure of protected field is that switch protecting connection is connected with work, and the connection restorative procedure that recovers territory connects for setting up recovery.
For solving the problems of the technologies described above; the present invention also provides a kind of routed domain of ASON; described routed domain is protected field or recovers territory; between territory, there is inclusion relation; described routed domain connects for detection of connecting fault and repairing; when breaking down and connect cannot repair time in this territory, also for notification package containing the larger protection in this territory or recover territory, by this larger protection or recover territory and connect reparation.
Further, described routed domain includes several nodes, described node is for detection of connection state, and the boundary node of signalling trouble place routed domain will be connected, described end node is used for repairing connection, and when connecting repairing failure, notification package is containing the end node of the larger routed domain of place routed domain, wherein boundary node refers to source node and the destination node of each routed domain.
Further, described node comprises Link Resource Manager module, link control module, wherein,
Described Link Resource Manager module, for detection of Link State, and notifies this node link control module by link-state information;
Described link control module, safeguards for connecting to set up and connect, and comprises and notifies the link control module to other node by link-state information.
Further, the boundary node of described protected field also comprises calling network controller, for connection status in control domain; The link control module of described protected field boundary node is also for notifying connection state information the network controller of this section point.
Further, the link control module in described recovery territory, also for setting up recovery heavy-route, to routing module control inquiry restoration route, and is set up and is recovered to connect according to the Query Result of routing module control.
Further, the connection restorative procedure of described protected field is that switch protecting connects, and the restorative procedure in described recovery territory recovers to connect for setting up.
The inventive method and routed domain; protection and restoration methods are basis; by the combination of protecting and recovering, improve the availability of service connection; protect and recover to cooperate finishing service reparation; avoided protection and recovered the confusion that action causes separately; improve the efficiency that connects fault restoration, possessed succinct, reliable advantage
Accompanying drawing explanation
Fig. 1 connects the schematic flow sheet of restorative procedure in ASON of the present invention.
Fig. 2 is protected field of the present invention and recovers the nest relation schematic diagram in territory.
Fig. 3 is that work connection fault detected in protected field after, head and the tail node connects business to be switched to protection connection diagram by working.
Fig. 4 protects and connects the head and the tail node schematic diagram that again breaks down and be informed to protected field in protected field after work connects fault.
Fig. 5 can not repair fault to connect the first node schematic diagram in recovery territory containing protected field by fault message notification package in protected field.
Fig. 6 sets up one to recover to connect alternative fault connection diagram in recovering territory.
Fig. 7 is the mutual schematic diagram of node that protection connection is broken down again after work connects fault in protected field.
Embodiment
In ASON; protection and recover to cooperate (Coordination) are implemented by control plane; protection and recovery all need to be set up connection route in territory; so control plane protected field (CP protectiondomain; hereinafter to be referred as " protected field ") and recover territory (Restoration domain; also claim " recovering heavy-route territory ") all belong to routed domain (Routing domain), so between protected field and recovery territory, also there is inclusion relation between the territory that G.8080 ITU-T define.
Between protection and recovery territory, can present different inclusion relations; as recover territory and comprise protected field, protected field and comprise protected field, protected field and comprise and recover territory; and the more multiple inclusion relation of amplifying thus; main thought of the present invention is; when certain protection or recover territory and break down and connect cannot repair time; the larger protection that this field notice comprises this territory or recovery territory, connect reparation by this larger protection or recovery territory.
The connection restorative procedure of ASON routed domain of the present invention, as Fig. 1 (shows, comprises the steps:
The relevant ASON node of step 201, certain routed domain detects service connection somewhere and breaks down;
Step 202, described in fault detected ASON node signalling trouble is connected to protection/recover source ASON node and the object ASON node in territory to guilty culprit;
Step 203, described connection protect/recover territory source and destination ASON node to receive signalling trouble, take protection/recovery action in protection/recovery territory;
If step 204 is protected/is successfully recovered, flow process finishes, if protect/recover unsuccessfully, notification package is containing larger protection/recovery territory in described protection/recovery territory;
Step 205, receive notice, if maximum protection/recovery territory and protection/be successfully recovered, process finishes, otherwise notifies user to protect/recover unsuccessfully, the jump procedure 203 if not maximum protection/recovery territory.
Core of the present invention is utilize protection and recover the inclusion relation between territory, by the cooperation relation between routed domain, realizes the combination of protecting and recovering, thereby completes protection or the recovery process of connection.
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 2, in this application example, service connection is through over recovery territory A and protected field C, and the nest relation between territory comprises and recovers territory B and protected field C for recovering territory A, below take that successively twice fault to occur in protected field C be example, and embodiment of the present invention are described.
In protected field C, first vocational work connection breaks down, and as shown in Figure 3, connects restorative procedure and comprises the steps:
In steps A 1, protected field C, vocational work connects the transmission link occurs fault between [A, C, E, F] node C and node E, and node C and E detect fault;
Step B2, node C and node E notify respectively node A and node F by fault message, and as shown in 1a in Fig. 2 and 1b, advice method can adopt the notify message of RSVP;
Step C3, node A and node F receive signalling trouble, take protection action, business is switched to protection by the connection of working [A, C, E, F] and connects [A, B, D, F], as shown in 2a in Fig. 2 and 2b step.
The protected mode of described protected field C can adopt 1:1, M:N or 1+1SNCP protection.
Step D4, in protected field C, service connection reparation success, process finishes.
Continue work, connect after fault, the interior protection connection of protected field C is again broken down and former work connects while not yet recovering, and as shown in Figure 3, connects restorative procedure and protects following steps:
In steps A 2, protected field C, service protection connects the transmission link occurs fault between [A, B, D, F] Node B and D, and Node B and D detect fault;
Step B2, Node B and D notify respectively node A and F by fault message, and as shown in 3a in Fig. 4 and 3b, advice method can adopt the notify message of RSVP;
Step C2, node A and F receive signalling trouble, do not have overhead provision supportive protection to switch action in protected field C;
In step D2, protected field C, protect unsuccessfully, node A notification package is containing the source node G in the recovery territory A of protected field C, and as shown in Fig. 54, advice method can adopt the notify message of RSVP;
Step e 2, recovery territory A are maximum recovery territories, reception notification, and node G takes to recover action, calculates and recovers connection route [G, H, I, J, K], and as shown in Fig. 65 to 12, foundation recovers to connect, and substitutes fault and connects, and process finishes.
Set up to recover connect and can adopt source routing or level routing mode, can use and meet the RSVP of ITU-TG.7713 regulation or CR-LDP agreement etc.
In order to realize above method; Automatic Switched Optical Network routed domain of the present invention; for protected field or recovery territory; between territory, there is inclusion relation; described routed domain connects for detection of connecting fault and repairing; when breaking down and connect cannot repair time in this territory, also for notification package containing the larger protection in this territory or recover territory, by this larger protection or recover territory and connect reparation.
The connection restorative procedure of described protected field is that switch protecting connects, and the restorative procedure in described recovery territory recovers to connect for setting up.
Described routed domain includes several nodes, described node is for detection of connection state, and the boundary node of signalling trouble place routed domain will be connected, described end node is used for repairing connection, and when connecting repairing failure, notification package is containing the boundary node of the larger routed domain of place routed domain, and wherein end node refers to source node and the destination node of each routed domain.
Described node comprises Link Resource Manager module LRM, link control module CC and routing module control RC, and the boundary node in described territory also comprises calling network controller NCC, wherein,
Link Resource Manager module LRM, for detection of Link State, and notifies this node link control module by link-state information;
Link control module CC, safeguards for connecting to set up and connect, and comprises and notifies the link control module CC to other node by link-state information;
The link control module of described boundary node is also for notifying connection state information the network controller NCC of this section point;
The link control module in described recovery territory, also for setting up recovery heavy-route, to routing module control RC inquiry restoration route, and is set up and is recovered to connect according to the Query Result of routing module control;
Calling network controller NCC is for connection status in control domain.
For better illustrating the inventive method, below in conjunction with Fig. 4, Fig. 5, Fig. 6 and Fig. 7, illustrate that protection connects again after fault, recover to connect the source routing mode that adopts of setting up, control plane component interaction step:
Link Resource Manager assembly (Link Resource Managers is called for short LRM) in steps A 3, B node and D node, two-way link fault detected, by signalling trouble, give link control module (Connection Controller is called for short CC) separately, as shown in 1a in Fig. 7 and 1b;
Step B3, CC
bfault message is notified to CC
a, CCD notifies fault message to CC
f; As shown in step 2a and 2b in Fig. 7;
Step C3, CC
aand CC
frespectively fault message is notified to calling network controller (NetworkCall Controller is called for short NCC) NCC
aand NCC
f, as shown in 3a in Fig. 7 and 3b;
Step D3, NCC
aand NCC
fidentify and do not have extra capacity protection fault to connect, notice CC
aand CC
f, as shown in 4a in Fig. 7 and 4b;
Step e 3, CC
ato protect failure notification message to CC
gmake to protect failure information to send to and recover territory A from protected field C, in announcement information, comprise route and recall (crankback) required protection failure domain information, as shown in Fig. 75;
Step F 3, CC
gstart and recover heavy-route, to RC
ginquiry restoration route, RC
greturn avoid error protection territory restoration route [G, H, I, J, K] as shown in Fig. 76;
Step G3, CC
gaccording to source routing mode, complete to recover to connect and set up, as shown in Fig. 77 to 29, this process meets G.8080 source routing establishment step of ITU-T.
From embodiment analysis above; it is basis that protection and the restoration methods that G.8080 ITU-T advise take in the present invention; by the combination of protecting and recovering, improve the availability of service connection; protect and recover to cooperate finishing service reparation; avoided protection and recovered the confusion that action causes separately; improve the efficiency that connects fault restoration, possessed succinct, reliable advantage.
Certainly; the present invention also can have other various embodiments; as comprising recovery territory and protected field and recovery territory, protected field there is multiple nested mode; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (2)
1. the connection restorative procedure of an ASON; routed domain in described ASON is protected field; between protected field, there is inclusion relation; it is characterized in that; when certain protected field detects connection fault; first connection fault message is notified to source node and the destination node of described protected field; by source node and destination node, take protection action to be connected to repair again; when connection cannot be repaired; this protected field notification package, containing the larger protected field of this protected field, connects reparation by this larger protected field.
2. the method for claim 1, is characterized in that: the connection restorative procedure of protected field is that switch protecting connection is connected with work.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810174662.5A CN101729936B (en) | 2008-10-30 | 2008-10-30 | Connection restoration method and routing domain of automatic exchange optical network |
| PCT/CN2009/000856 WO2010048772A1 (en) | 2008-10-30 | 2009-07-30 | Method for connection restoring in the automatic switched optical network and routing domain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810174662.5A CN101729936B (en) | 2008-10-30 | 2008-10-30 | Connection restoration method and routing domain of automatic exchange optical network |
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| Publication Number | Publication Date |
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| CN101729936A CN101729936A (en) | 2010-06-09 |
| CN101729936B true CN101729936B (en) | 2014-04-09 |
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| CN200810174662.5A Expired - Fee Related CN101729936B (en) | 2008-10-30 | 2008-10-30 | Connection restoration method and routing domain of automatic exchange optical network |
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| WO (1) | WO2010048772A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104113791A (en) * | 2013-04-19 | 2014-10-22 | 中兴通讯股份有限公司 | Automatically switched optical network evolution system and method |
| CN105488897A (en) * | 2013-10-28 | 2016-04-13 | 东莞市清大曜嘉信息技术有限公司 | Barcode recognition terminal for antiferromagnetic resonance identifier and reading method thereof |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322713C (en) * | 2005-04-15 | 2007-06-20 | 清华大学 | Method for enhancing survivability of automatic exchange optical network |
| CN100382504C (en) * | 2005-07-14 | 2008-04-16 | 广东省电信有限公司研究院 | Cross-over end-to-end connection setting method for main apparatus protection in automatic exchange optical network |
| CN100512192C (en) * | 2006-01-28 | 2009-07-08 | 中兴通讯股份有限公司 | Cross-domain call and connection control method for automatic switching optical network |
| CN101534459B (en) * | 2009-04-22 | 2011-12-28 | 中兴通讯股份有限公司 | Method and system for realizing protection and recovery in automatic switched optical network |
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- 2009-07-30 WO PCT/CN2009/000856 patent/WO2010048772A1/en active Application Filing
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| CN101729936A (en) | 2010-06-09 |
| WO2010048772A1 (en) | 2010-05-06 |
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