CN102148694B - A kind of linear 1:N guard method of grouping conveying network, device and system - Google Patents
A kind of linear 1:N guard method of grouping conveying network, device and system Download PDFInfo
- Publication number
- CN102148694B CN102148694B CN201010112797.6A CN201010112797A CN102148694B CN 102148694 B CN102148694 B CN 102148694B CN 201010112797 A CN201010112797 A CN 201010112797A CN 102148694 B CN102148694 B CN 102148694B
- Authority
- CN
- China
- Prior art keywords
- pretection switch
- path
- operating path
- distant
- node
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- H04L41/0604—Management of faults, events, alarms or notifications using filtering, e.g. reduction of information by using priority, element types, position or time
- H04L41/0609—Management of faults, events, alarms or notifications using filtering, e.g. reduction of information by using priority, element types, position or time based on severity or priority
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a kind of linear 1:N guard method and device of grouping conveying network, all can after destination node detect that operating path breaks down, notice distant-end node carries out 1:N pretection switch for this operating path; The operating path situation that distant-end node detects according to self and the notice from destination node, determine to carry out the operating path of 1:N pretection switch and perform pretection switch and notify that destination node performs the operating path of described pretection switch; Destination node is according to the notice from distant-end node, and the described operating path of pretection switch carries out 1:N pretection switch to distant-end node executed.The inventive method and dress can realize the linear 1:N protection of grouping conveying network, have saved bandwidth.
Description
Technical field
The present invention relates to the communication technology, be specifically related to a kind of linear 1:N guard method of grouping conveying network, device and system.
Background technology
Along with the development of grouping conveying network (packettransportnetwork, PTN) technology, PTN will become the major access techniques of each Virtual network operator gradually.The PTN of present definition is including, but not limited to lower network: MPLS, T-MPLS, MPLS-TP, Ethernet etc., its network protection important in inhibiting.
RFC5654 proposes MPLS-TP must support pseudo-line (pseudowire; and label switched path (labelswitchingpath PW); LSP) point-to-point (pointtopoint; P2P) two-way 1:N linear protection switching; the unidirectional 1:N pretection switch of point-to-multipoint (pointtomultipoint, P2MP) must be supported.
Wherein, unidirectional protection refers to the business of only switching affected direction; Two-way, be that the business of both direction is all switched; 1:N protection refers to a Protection path protection N bar operating path, and the bandwidth of Protection path is at least greater than the bandwidth equaling the paths that bandwidth is maximum in N bar operating path, is used for the protection of tributary signal and device board level.
For 1:N protection, the probability simultaneously broken down due to N bar operating path or equipment veneer is very low, thus effectively can utilize Internet resources, but cost is its protection switch time will be slower than 1:1 protection scheme.
In current defined 1:1 protection scheme; the first and last Joint Enterprise guard mode of operating path and Protection path coordinates (Protectionstatecoordination; PSC) agreement; when operating path breaks down; the node detecting fault flow switch on Protection path; and send APS pretection switch signaling to the far-end in path, far-end to receive after pretection switch signaling also by flow switch on Protection path.
Although above-mentioned 1:1 protection scheme only needs can complete switching by first and last node switching signaling message, bandwidth waste is serious.
Summary of the invention
In view of this, main purpose of the present invention is the linear 1:N guard method, the device that provide a kind of grouping conveying network, to realize the linear 1:N protection of grouping conveying network, has saved bandwidth.
Another object of the present invention is to the linear 1:N protection system that a kind of grouping conveying network is provided, to realize the linear 1:N protection of grouping conveying network, save bandwidth.
For achieving the above object, technical scheme of the present invention is achieved in that
A linear 1:N guard method for grouping conveying network, the method comprises:
After destination node detects that operating path breaks down, notice distant-end node carries out 1:N pretection switch for this operating path;
The operating path situation that distant-end node detects according to self and the notice from destination node, determine to carry out the operating path of 1:N pretection switch and perform pretection switch and notify that destination node performs the operating path of described pretection switch;
Destination node is according to the notice from distant-end node, and the described operating path of pretection switch carries out 1:N pretection switch to distant-end node executed.
Comprise further:
Expansion is in advance used to indicate the request of 1:N pretection switch and shows the pretection switch command context in specific works path.
Distant-end node determines that the method for the operating path that will carry out described 1:N pretection switch is:
Distant-end node self does not detect working path failure, and the receiving terminal of operating path destination node notified in self side and the flow of transmitting terminal are all bridged on Protection path;
Or; distant-end node self detects working path failure; and compare the priority of the operating path that this operating path that fault self detected and destination node notify, in self side, the receiving terminal of operating path the highest for priority and transmitting terminal flow are all bridged on Protection path afterwards.
The described pretection switch command context expanded in advance is contained in two-phase guard mode and coordinates in (2-phasePSC) protocol format.
The request flag position being used to indicate 1:N pretection switch is: pretection switch request (Reverserequest) flag bit;
Show that the described content in specific works path is: operating path is numbered.
A linear 1:N protective device for grouping conveying network, this device, as distant-end node, comprises 1:N pretection switch unit, communication unit; Wherein,
Described communication unit, for receiving the message carrying out 1:N pretection switch unit from destination node, and sends to described 1:N pretection switch unit; And the pretection switch situation concrete according to the trigger notice destination node of described 1:N pretection switch unit;
Described 1:N pretection switch unit, is all bridged to Protection path for node side belonging to self by the receiving terminal of the operating path corresponding to the above-mentioned notice received and transmitting terminal flow, and this situation is informed to communication unit.
Comprising fault detection unit further, for detecting the operating path state of node one example belonging to it, and notifying described 1:N pretection switch unit when working path failure having been detected;
Described 1:N pretection switch unit; be further used for comparing the priority of the operating path corresponding to the notice of fault detection unit and the operating path corresponding to the message from destination node, and the receiving terminal of operating path the highest for priority and transmitting terminal flow are all bridged on Protection path by node side belonging to self.
Be provided with in described communication unit expand in advance be used to indicate the request flag position of 1:N pretection switch and show that the pretection switch command context in specific works path, this content are contained in 2-phasePSC protocol format;
The request flag position being used to indicate 1:N pretection switch is: Reverserequest flag bit; Show that the described content in specific works path is: operating path is numbered.
A linear 1:N protective device for grouping conveying network, this device, as destination node, comprises fault detection unit, 1:N pretection switch unit, communication unit; Wherein,
Described fault detection unit, for detecting the operating path state of node side belonging to it, and notifies described communication unit when working path failure having been detected;
Described communication unit, for by the working path failure situation from fault detection unit distally node send; The message of 1:N pretection switch is carried out in the instruction also received from distant-end node, and this message is sent to described 1:N pretection switch unit; And the situation completing pretection switch from described 1:N pretection switch unit is informed to distant-end node;
Described 1:N pretection switch unit; the receiving terminal and the transmitting terminal flow that for node side belonging to self instruction received are carried out the operating path corresponding to message of 1:N pretection switch are all bridged to Protection path, then this situation completing pretection switch is informed to described communication unit.
Be provided with in described communication unit expand in advance be used to indicate the request flag position of 1:N pretection switch and show that the pretection switch command context in specific works path, this content are contained in 2-phasePSC protocol format;
The request flag position being used to indicate 1:N pretection switch is: Reverserequest flag bit; Show that the described content in specific works path is: operating path is numbered.
A linear 1:N protection system for grouping conveying network, this system comprises distant-end node, destination node; Wherein,
Described distant-end node, for the operating path situation that detects according to self and the notice of carrying out 1:N pretection switch from the instruction of destination node, determine to carry out the operating path of 1:N pretection switch and to perform pretection switch, also notify that destination node performs the operating path of described pretection switch;
Described destination node, for after detecting that operating path breaks down, notice distant-end node carries out 1:N pretection switch for this operating path; And according to the notice from distant-end node, the operating path of pretection switch carries out 1:N pretection switch to distant-end node executed.
Be provided with in this system expand in advance be used to indicate the request flag position of 1:N pretection switch and show that the pretection switch command context in specific works path, this content are contained in 2-phasePSC protocol format;
The request flag position being used to indicate 1:N pretection switch is: pretection switch request Reverserequest flag bit; Show that the described content in specific works path is: operating path is numbered.
Visible, the linear 1:N guard method of grouping conveying network of the present invention, device and system, can switch the content of order by extended protection, add 1:N pretection switch request flag position, operating path numbering; After destination node detects that operating path breaks down, notice distant-end node carries out 1:N pretection switch for this operating path; The operating path situation that distant-end node detects according to self and the notice from destination node, determine to carry out the operating path of 1:N pretection switch and to perform pretection switch, also notifies that destination node performs the operating path of described pretection switch; Destination node is according to the notice from distant-end node, and the described operating path of pretection switch carries out 1:N pretection switch to distant-end node executed.Therefore, the linear 1:N protection of grouping conveying network can be realized smoothly.
Accompanying drawing explanation
Fig. 1 is the 1-phasePSC protocol format schematic diagram of prior art;
Fig. 2 is 2-phasePSC protocol format schematic diagram of the present invention;
Fig. 3 is the 1:N pretection switch schematic diagram of the embodiment of the present invention one;
Fig. 4 is the 1:N pretection switch schematic diagram of the embodiment of the present invention two;
Fig. 5 is 1:N pretection switch general flow chart of the present invention;
Fig. 6 is 1:N pretection switch installation drawing of the present invention.
Embodiment
The 1-phase guard mode being prior art see Fig. 1, Fig. 1 coordinates (Protectionstatecoordination, PSC) protocol format schematic diagram.1-phasePSC protocol format shown in Fig. 1 comprises following content:
(1) Ver is the version of 1-phasePSC agreement, is usually set to 0;
(2) ask (Request) flag bit for showing the command request of pretection switch, current defined order is as follows:
(1111) Clear removes;
(1110) Lockoutprotection protection locking;
(1101) Forcedswitch Forced Switch;
(0110) Signalfault Signal Fail;
(0101) Signaldegrade Signal Degrade;
(0100) Manualswitch Manual Switch;
(0011) Waittorestore Wait-to-Restore;
(0010) Donotrevert (DNR) non-inverted;
(0000) Norequest sky request;
(3) Typ is the type of pretection switch, and current defined type is as follows:
11: 1+1bidirectionalswitching1+1 bidirectional protective is switched;
10: 1: 1bidirectionalswitching1: 1 bidirectional protective is switched;
01: 1+1unidirectionalswitching1+1 unidirectional protection is switched;
00: 1: 1unidirectionalswitching1: 1 unidirectional protection is switched;
(4) FPath and Path indicates the traffic conditions on the path of inefficacy and the path of current activation respectively:
Fpath: show that Protection path breaks down when value is 0; Value shows that operating path breaks down when being 1, and all the other flag bits are reserved.
Path: show when value is 0 that flow is current and transmit on operating path; Value shows when being 1 that flow is current and transmits on Protection path, and all the other flag bits are reserved.
(5) Reserved is reserved flag bit, treats that expansion uses.
In actual applications, the content of order can be switched by extended protection, as: add 1:N pretection switch request flag position, operating path numbering, enable the pretection switch order after expansion provide technical support for 1:N pretection switch.Specifically, can be realized the expansion of pretection switch command context by protocol formats such as extended automatic protection turning protocol (AutomaticProtectionProtocol, APS), PSC, Fig. 2 gives a kind of extended mode for PSC.
Be 1-phasePSC protocol format schematic diagram of the present invention see Fig. 2, Fig. 2, Fig. 2 defines the 2-phasePSC agreement for 1:N pretection switch based on content shown in Fig. 1.Concrete expansion is as follows:
(1) a new Request flag bit is defined at Request flag bit place:
(0001) order of Reverserequest pretection switch request, request recovers;
Can for Reverserequest command set priority, as: the priority of Reverserequest order is set higher than Donotrevert, but lower than Waittorestore.If a node receives two or more pretection switch request command simultaneously, the pretection switch request command so with limit priority is effective.
(2) 10 and 00 flag bit of original protect types is two-way and unidirectional 1:1 pretection switch respectively, and need now this definition slightly to expand, implication expands as two-way and unidirectional 1:N pretection switch;
(3) Reserved byte is utilized, path number (pathnumber, the PN) flag bit of definition 4bits, for giving path number.If expansion 4bits, the operating path that so Protection path is protected at most is 14; If need, with 1 Protection path protection more operating paths, the PN flag bit of more bits can be defined, be only with 4bits as an example here, but be not limited to 4bits.
Specifically, value 0 is used for identifying Protection path, and value 1 ~ 14 is used for identifying operating path, and value 15 shows to there is extra traffic in current protection channel.The size of path number shows the priority of this path being carried out to pretection switch; Under square one, path number is less, and priority is higher.That is: if there is Signal Fail fault in operating path 1 and operating path 2, so priority protection operating path 1 simultaneously.
When applying above-mentioned expansion structure and carrying out 1:N pretection switch; the first and last node in path can by means of only twice Signalling exchange (being not counted in Norequest request) process to complete the action of 1:N pretection switch; thus efficiently can process the situation that multiple operating path breaks down simultaneously, realize the 1:N protection & restoration to data packet traffic.The basic ideas of carrying out 1:N pretection switch are as follows:
After destination node detects that operating path breaks down (this fault can be Signal Fail, also can be Signal Degrade), distally node sends for the protection of the PSC message switched; Wherein can carry the information such as numbering of operating path of the traffic conditions on the path of the reason of fault, the operating path of inefficacy and current activation, inefficacy.
Distant-end node receives the pretection switch order from destination node, and the operating path situation detected in conjunction with self, determine the operating path that will carry out 1:N pretection switch.As: when distant-end node receives only the pretection switch order from destination node, distant-end node is determined to carry out 1:N pretection switch to the operating path corresponding to this pretection switch order; When distant-end node not only receive from destination node pretection switch order but also self side working path failure detected; distant-end node can compare the priority of the operating path broken down in the received operating path corresponding to pretection switch order and self side, and determines to carry out 1:N pretection switch by the operating path the highest to priority.
Afterwards; distant-end node is to determining that the operating path that will carry out 1:N pretection switch performs pretection switch action; then send ReverseRequest order to destination node, wherein carry the traffic conditions on the operating path of inefficacy and the path of current activation, complete the information such as the numbering of the operating path of pretection switch.
Destination node receives the ReverseRequest order from distant-end node, performs pretection switch action in self side to the operating path corresponding to this order; Then send NoRequest message to distant-end node, wherein carry the traffic conditions on the operating path of inefficacy and the path of current activation, complete the information such as the numbering of the operating path of pretection switch.
When carrying out 1:N pretection switch based on above-mentioned basic ideas, concrete operating process can show as shown in Figure 3,4.
See the 1:N pretection switch schematic diagram that Fig. 3, Fig. 3 are the embodiment of the present invention one.In Fig. 3, between node A (NEA) and Node B (NEB), be configured with 1:N protection group, to apply a Protection path protection N bar operating path.NEA and NEB is the common first and last node of this N+1 paths, can directly be connected, also can in the multiple node of span.
Generally speaking, above-mentioned N+1 paths belongs to different sharing memory (SRLG), is such as among different optical fiber, like this when there is the accident that optical fiber cuts off, only have a paths to be affected, and N+1 paths can not be caused all can not to use.Protection path be numbered 0, the numbering of operating path is successively from 1 to N.At a time there is Signal Fail in the direction of operating path 1 from NEA to NEB, and the flow process of so carrying out 1:N pretection switch is as follows:
NEB detects Signal Fail by CV (connectivityverification) OAM that operating path 1 runs.Specifically; owing to being generally 3.3ms for the protection of the transmission frequency of the CV switched; if the CV message being sent to NEB from NEA has three can not receive, so NEB will think that Signal Fail appears in its upstream, and thus NEB can detect that in 10ms link signal lost efficacy.NEB sends the PSC message of order for SF (signalfault) to NEA, wherein Fpath=01 illustrates that Signal Fail appears in operating path, path=00 illustrates that flow transmits at present on operating path, and PN=01 illustrates that Signal Fail appears in operating path 1.
After NEA receives the PSC message from NEB; in self side, the flow of the receiving terminal of operating path 1 and transmitting terminal is all bridged on Protection path; send the PSC message of order for recovery request RR (ReverseRequest) afterwards to NEB; in this PSC message, Fpath=01 illustrates that Signal Fail appears in operating path; path=01 illustrates that flow has been bridged on Protection path at NEA end and transmits, and PN=01 illustrates that at the NEA end operating path be bridged on Protection path be operating path 1.
After NEB receives the ReverseRequest from NEA; in self side, the flow of the receiving terminal of operating path 1 and transmitting terminal is all bridged on Protection path; send the PSC message of order for empty request NR (Norequest) afterwards to NEA; in this PSC message, Fpath=01 illustrates that Signal Fail appears in operating path; path=01 illustrates that flow has been bridged on Protection path at NEB end and transmits, and PN=01 illustrates that at the NEB end operating path be bridged on Protection path be operating path 1.
See the 1:N pretection switch schematic diagram that Fig. 4, Fig. 4 are the embodiment of the present invention two.In Fig. 4, between NEA and NEB, be configured with 1:N protection group, to apply a Protection path protection N bar operating path.NEA and NEB is the common first and last node of this N+1 paths, can directly be connected, also can in the multiple node of span.Generally speaking, N+1 paths belongs to different SRLG.Protection path be numbered 0, the numbering of operating path is successively from 1 to N; Further, there is Signal Fail in the direction of t1 moment operating path 2 from NEB to NEA.
In this case, NEA detects Signal Fail by CVOAM, and then send the PSC message of order for SF, in this PSC message, Fpath=01 illustrates that Signal Fail appears in operating path, path=00 illustrates that flow transmits at present on operating path, and PN=10 illustrates that Signal Fail appears in operating path 2.
After as NEB, to receive the order of sending from NEA be the PSC message of signalfault, NEB detects that Signal Fail has also appearred in the direction of operating path 1 from NEA to NEB.At this moment, NEB compares the priority of operating path 1 and operating path 2, and determines that the priority of operating path 1 is the highest, and then the flow in self side by operating path 1 is bridged on Protection path.Afterwards; NEB sends the PSC message of order for ReverseRequest to NEA; in this PSC message, Fpath=1 illustrates that operating path breaks down; path=01 illustrates that flow has been bridged on Protection path at NEB end and transmits, and PN=01 illustrates that at the NEB end operating path be bridged on Protection path be operating path 1.
After NEA receives the ReverseRequest from NEB; in self side, the flow of the receiving terminal of operating path 1 and transmitting terminal is all bridged on Protection path; send the PSC message of order for Norequest afterwards to NEB; in this PSC message, Fpath=01 illustrates that Signal Fail appears in operating path; path=01 illustrates that flow has been bridged on Protection path at NEA end and transmits, and PN=01 illustrates that at the NEA end operating path be bridged on Protection path be operating path 1.
From the above, Fig. 3,4 operating process can simplify as shown in Figure 5.Be 1:N pretection switch general flow chart of the present invention see Fig. 5, Fig. 5, this flow process comprises the following steps:
Step 510: extended protection switches the content of order, adds the ReverseRequest required for the request of 1:N pretection switch, operating path numbering.
Step 520: after destination node detects that operating path breaks down, notice distant-end node carries out 1:N pretection switch for this operating path.
Step 530: the operating path situation that distant-end node detects according to self and the notice from destination node, determines to carry out the operating path of 1:N pretection switch and to perform pretection switch, also notifies that destination node performs the operating path of described pretection switch.
Step 540: destination node is according to the notice from distant-end node, and the described operating path of pretection switch carries out 1:N pretection switch to distant-end node executed.
In order to the 1:N pretection switch operation in above-mentioned each figure can be realized smoothly, setting as shown in Figure 6 can be carried out.Be 1:N pretection switch installation drawing of the present invention see Fig. 6, Fig. 6; As NE, this device comprises connected fault detection unit, 1:N pretection switch unit, communication unit; These functional entitys can be connected successively or be connected between two, as long as can be normally mutual to realize 1:N pretection switch smoothly.Further, in communication unit, be provided with the pretection switch command format having realized expansion of content, thus can carry out the operation such as encapsulation, parsing, transmission of Content of Communication in normal course of communications.
During embody rule; when above-mentioned NE is as distant-end node; can by the PSC message of communication unit reception wherein from the pretection switch order (such as signalfault) of destination node; and the PSC message received is sent to 1:N pretection switch unit; by 1:N pretection switch unit node side belonging to self, the receiving terminal of the operating path corresponding to the above-mentioned PSC message received and transmitting terminal flow are all bridged on Protection path, and this situation is informed to communication unit.Communication unit sends the PSC message of order for ReverseRequest, to notify the pretection switch situation that destination node is concrete according to the notice of 1:N pretection switch unit to destination node.
It should be noted that, fault detection unit can detect the operating path state of node side belonging to it, and notifies 1:N pretection switch unit when working path failure having been detected.If the operating path corresponding to the notice of fault detection unit is two different operating paths from the operating path corresponding to the above-mentioned PSC message from destination node; 1:N pretection switch unit then needs the priority comparing these two operating paths; and the receiving terminal of operating path the highest for priority and transmitting terminal flow are all bridged on Protection path by node side belonging to self, then this situation is notified destination node by communication unit by application of aforementioned method.
In addition, when above-mentioned NE is as destination node, fault detection unit can detect the operating path state of node side belonging to it, and the state notifying communication unit of operating path detected, by communication unit by this situation with the form of PSC message distally node send.And; the communication unit order that can also receive from distant-end node is the PSC message of ReverseRequest; and this PSC message is sent to 1:N pretection switch unit; by 1:N pretection switch unit node side belonging to self, the receiving terminal of the operating path corresponding to above-mentioned PSC message and transmitting terminal flow are all bridged on Protection path; again this situation completing pretection switch is informed to communication unit; by communication unit, distally node sends order is the PSC message of Norequest, to notify that distant-end node pretection switch completes.
Visible in sum, be no matter method or the device embodied with node or the system comprising node, the linear 1:N resist technology of grouping conveying network of the present invention all can realize the linear 1:N protection of grouping conveying network smoothly.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention, and all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a linear 1:N guard method for grouping conveying network, it is characterized in that, the method comprises:
After destination node detects that operating path breaks down, notice distant-end node carries out 1:N pretection switch for this operating path;
The operating path situation that distant-end node detects according to self and the notice from destination node, determine to carry out the operating path of 1:N pretection switch and perform pretection switch and notify that destination node performs the operating path of described pretection switch; Described determine to carry out 1:N pretection switch operating path and perform pretection switch and comprise: distant-end node self detects working path failure, and compare the priority of the operating path that operating path that fault self detected and destination node notify, in self side, the receiving terminal of operating path the highest for priority and transmitting terminal flow are all bridged on Protection path afterwards;
Destination node is according to the notice from distant-end node, and the described operating path of pretection switch carries out 1:N pretection switch to distant-end node executed.
2. method according to claim 1, is characterized in that, comprises further:
Expansion is in advance used to indicate the request of 1:N pretection switch and shows the pretection switch command context in specific works path.
3. method according to claim 2, is characterized in that, distant-end node determines that the method for the operating path that will carry out described 1:N pretection switch is also:
Distant-end node self does not detect working path failure, and the receiving terminal of operating path destination node notified in self side and the flow of transmitting terminal are all bridged on Protection path.
4. according to the method in claim 2 or 3, it is characterized in that, the described pretection switch command context expanded in advance is contained in two-phase guard mode and coordinates in 2-phasePSC protocol format.
5. method according to claim 4, is characterized in that,
The request flag position being used to indicate 1:N pretection switch is: pretection switch request Reverserequest flag bit;
Show that the described content in specific works path is: operating path is numbered.
6. a linear 1:N protective device for grouping conveying network, is characterized in that, this device, as distant-end node, comprises 1:N pretection switch unit, communication unit; Wherein,
Described communication unit, for receiving the message carrying out 1:N pretection switch unit from destination node, and sends to described 1:N pretection switch unit; And the pretection switch situation concrete according to the trigger notice destination node of described 1:N pretection switch unit;
Described 1:N pretection switch unit, is all bridged to Protection path for node side belonging to self by the receiving terminal of the operating path corresponding to the above-mentioned notice received and transmitting terminal flow, and this situation is informed to communication unit; The described receiving terminal of the operating path corresponding to the above-mentioned notice received and transmitting terminal flow being all bridged on Protection path comprises: the priority comparing the operating path that operating path that fault self detected and destination node notify, is all bridged to the receiving terminal of operating path the highest for priority and transmitting terminal flow on Protection path in self side afterwards.
7. device according to claim 6, is characterized in that, comprises fault detection unit further, for detecting the operating path state of node side belonging to it, and notifies described 1:N pretection switch unit when working path failure having been detected.
8. the device according to claim 6 or 7, it is characterized in that, be provided with in described communication unit expand in advance be used to indicate the request flag position of 1:N pretection switch and show that the pretection switch command context in specific works path, this content are contained in 2-phasePSC protocol format;
The request flag position being used to indicate 1:N pretection switch is: Reverserequest flag bit; Show that the described content in specific works path is: operating path is numbered.
9. a linear 1:N protective device for grouping conveying network, is characterized in that, this device, as destination node, comprises fault detection unit, 1:N pretection switch unit, communication unit; Wherein,
Described fault detection unit, for detecting the operating path state of node side belonging to it, and notifies described communication unit when working path failure having been detected;
Described communication unit, for by the working path failure situation from fault detection unit distally node send; The message of 1:N pretection switch is carried out in the instruction also received from distant-end node, and this message is sent to described 1:N pretection switch unit; And the situation completing pretection switch from described 1:N pretection switch unit is informed to distant-end node;
Described 1:N pretection switch unit, the receiving terminal and the transmitting terminal flow that for node side belonging to self instruction received are carried out the operating path corresponding to message of 1:N pretection switch are all bridged to Protection path, then this situation completing pretection switch is informed to described communication unit; The operating path corresponding to message of the described 1:N of carrying out pretection switch is: the priority in the fail operation path that described distant-end node self is detected by the operating path and described distant-end node comparing destination node notice, the operating path that the priority determined is the highest.
10. device according to claim 9, it is characterized in that, be provided with in described communication unit expand in advance be used to indicate the request flag position of 1:N pretection switch and show that the pretection switch command context in specific works path, this content are contained in 2-phasePSC protocol format;
The request flag position being used to indicate 1:N pretection switch is: Reverserequest flag bit; Show that the described content in specific works path is: operating path is numbered.
The linear 1:N protection system of 11. 1 kinds of grouping conveying networks, it is characterized in that, this system comprises distant-end node, destination node; Wherein,
Described distant-end node, for the operating path situation that detects according to self and the notice of carrying out 1:N pretection switch from the instruction of destination node, determine to carry out the operating path of 1:N pretection switch and to perform pretection switch, also notify that destination node performs the operating path of described pretection switch; Described determine to carry out 1:N pretection switch operating path and perform pretection switch and comprise: the priority comparing the operating path that operating path that fault self detected and destination node notify, is all bridged to the receiving terminal of operating path the highest for priority and transmitting terminal flow on Protection path in self side afterwards;
Described destination node, for after detecting that operating path breaks down, notice distant-end node carries out 1:N pretection switch for this operating path; And according to the notice from distant-end node, the operating path of pretection switch carries out 1:N pretection switch to distant-end node executed.
12. systems according to claim 11, it is characterized in that, be provided with in this system expand in advance be used to indicate the request flag position of 1:N pretection switch and show that the pretection switch command context in specific works path, this content are contained in 2-phasePSC protocol format;
The request flag position being used to indicate 1:N pretection switch is: pretection switch request Reverserequest flag bit; Show that the described content in specific works path is: operating path is numbered.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010112797.6A CN102148694B (en) | 2010-02-04 | 2010-02-04 | A kind of linear 1:N guard method of grouping conveying network, device and system |
| PCT/CN2011/070666 WO2011095101A1 (en) | 2010-02-04 | 2011-01-26 | Linear 1: n protection method, device and system for packet transport network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010112797.6A CN102148694B (en) | 2010-02-04 | 2010-02-04 | A kind of linear 1:N guard method of grouping conveying network, device and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102148694A CN102148694A (en) | 2011-08-10 |
| CN102148694B true CN102148694B (en) | 2016-03-30 |
Family
ID=44354966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010112797.6A Active CN102148694B (en) | 2010-02-04 | 2010-02-04 | A kind of linear 1:N guard method of grouping conveying network, device and system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102148694B (en) |
| WO (1) | WO2011095101A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420753B (en) * | 2011-11-28 | 2014-08-13 | 中兴通讯股份有限公司 | Automatic protection switching (APS) protocol state transition method and device |
| CN103297259B (en) * | 2012-02-29 | 2018-07-06 | 中兴通讯股份有限公司 | The guard method of point-to-multipoint multicast service and device |
| CN102694683B (en) * | 2012-05-22 | 2016-09-28 | 华为技术有限公司 | A kind of business reverse method, NM server and communication system |
| CN103580884B (en) * | 2012-07-19 | 2018-08-28 | 中兴通讯股份有限公司 | Method, system, sending ending equipment and the receiving device of relaying configuration |
| EP2944066B1 (en) * | 2013-01-08 | 2018-03-14 | Telefonaktiebolaget LM Ericsson (publ) | Method and device for handling inconsistency of psc states between two ends |
| CN105703936B (en) * | 2014-11-28 | 2020-06-09 | 中兴通讯股份有限公司 | Control method, control device and main control board |
| CN105763344A (en) * | 2014-12-15 | 2016-07-13 | 中兴通讯股份有限公司 | Method and device for dynamically adjusting SRLG |
| CN105897451B (en) * | 2015-01-26 | 2019-12-06 | 中国移动通信集团内蒙古有限公司 | OTN dispatching system and fault processing method |
| CN106921568B (en) * | 2015-12-26 | 2020-04-21 | 华为技术有限公司 | Network protection method and device |
| CN113055284A (en) * | 2016-12-24 | 2021-06-29 | 华为技术有限公司 | Method, device and system for path selection |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5978354A (en) * | 1995-07-21 | 1999-11-02 | Fujitsu Limited | Optical transmission system and transmission line switching control method |
| CN101567800A (en) * | 2008-04-22 | 2009-10-28 | 华为技术有限公司 | Method and system for protection switching decision and method and system for performance monitoring |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60201752T2 (en) * | 2002-08-05 | 2005-03-17 | Alcatel | M: N path protection |
-
2010
- 2010-02-04 CN CN201010112797.6A patent/CN102148694B/en active Active
-
2011
- 2011-01-26 WO PCT/CN2011/070666 patent/WO2011095101A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5978354A (en) * | 1995-07-21 | 1999-11-02 | Fujitsu Limited | Optical transmission system and transmission line switching control method |
| CN101567800A (en) * | 2008-04-22 | 2009-10-28 | 华为技术有限公司 | Method and system for protection switching decision and method and system for performance monitoring |
Non-Patent Citations (1)
| Title |
|---|
| 一般保护倒换-线性路径和子网保护;国际电信联盟电信标准化部门;《ITU-TG808.1》;20060331;第7,24节 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102148694A (en) | 2011-08-10 |
| WO2011095101A1 (en) | 2011-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102148694B (en) | A kind of linear 1:N guard method of grouping conveying network, device and system | |
| CN103178971B (en) | PON guard method and device | |
| US9871708B2 (en) | Method and system for ring protection switching | |
| US7660236B2 (en) | System and method of multi-nodal APS control protocol signaling | |
| CN101702658B (en) | Implement method of ring network protection and system thereof | |
| CN1848714B (en) | Method for realizing network protection through combination of network element double-imputation and loop network protection | |
| CN101340346A (en) | Ring control method and apparatus of Ethernet looped network system | |
| CN101944951A (en) | Method and device for switching back links between networks | |
| CN103490921B (en) | Network protection method, device, lower link point and system | |
| CN100446476C (en) | Method and apparatus for communicating network trouble dtecting result | |
| CN101908983A (en) | Joint detection method and system for Ethernet local segment protection | |
| EP1942609B1 (en) | A system and method for protecting multicast service path | |
| CN101192990A (en) | A method and device and system for quick rerouting in MPLS network | |
| CN102355363A (en) | Method and apparatus for automatic protection switching | |
| CN107431655B (en) | Method and apparatus for fault propagation in segment protection | |
| CN106161232B (en) | tunnel protection switching method and device | |
| CN101547131A (en) | EAPS looped network single-channel fault location and protection method | |
| WO2015168892A1 (en) | Protection switching method, node and control device | |
| CN101621347B (en) | Reverse treatment method and device | |
| CN103297259A (en) | Method and device for protecting point-to-multipoint multicast service | |
| CN101262400A (en) | A method and system for flexible packet loop redundant protection under bride mode | |
| CN103117924A (en) | Method and device for protection switching | |
| CN103404091A (en) | Business protecting method, device and system | |
| CN102014033B (en) | Method and system for restoring services of fault nodes in ring network | |
| CN102487327B (en) | Service switch method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |