CN102035714B - A kind of crossing tangent ring networks guard method and system - Google Patents
A kind of crossing tangent ring networks guard method and system Download PDFInfo
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- CN102035714B CN102035714B CN201010594045.8A CN201010594045A CN102035714B CN 102035714 B CN102035714 B CN 102035714B CN 201010594045 A CN201010594045 A CN 201010594045A CN 102035714 B CN102035714 B CN 102035714B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
- H04L12/437—Ring fault isolation or reconfiguration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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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
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
Abstract
The invention discloses a kind of crossing tangent ring networks guard method and system, in intersecting or tangent Joint Enterprise two-way operation tunnel of transannular protection, set up looped network protection group respectively in each direction of described work tunnel; And all enable TMS in the direction of the direction of two-way active link and protection link? OAM detects.Adopt of the present inventionly to intersect based on T-MPLS, the bidirectional protective method of tangent ring networks protection; the inter-connection links on double-ring intersecting, tangent node can be protected; when inter-connection links breaks down, realize transannular business and protect end to end, and ensure that protection switch time is not more than 50ms.
Description
Technical field
The present invention relates to grouping conveying network looped network protection technical field, particularly relate to a kind of crossing tangent ring networks guard method and system.
Background technology
Along with the progressively universal of grouping conveying network and application, the demand of user to network reliability is also more and more higher.In order to improve the survivability of network, the protection mechanism of network is absolutely necessary.T-MPLS(Transport-MultiProtocolLabelSwitching, transport MPLS) protection mainly contains linear protection and looped network protection.Looped network protection switching technical advantage mainly contains: the section of belonging to layer is protected, and saves a large amount of LSP
(labelSwitchedPath, label switched path
)entry number and configuration effort amount; Without the need to the expense frame at every bar LSP3.3ms interval, significantly improve the transmission bandwidth of service channel.
In grouping conveying network, business normally needs transannular to protect, and be double-ring intersecting protection as shown in Figure 1a, Fig. 1 b is depicted as tangent protection.In the interconnected protection of dicyclo, for other fault except intersecting, except tangent node, still adopt the looped network protection mechanism identical with monocycle, protection mechanism should work alone in two rings, does not interfere with each other.
At present, most equipment all only achieves in monocycle protection, and when all losing efficacy for the interconnected active link when intersecting, on tangent node, flow will interrupt, and traffic affecting normally runs.Due to the complexity switched and protection group is safeguarded, there be limited evidence currently of has this application scenarios of product support, but linearly jointly realizes link protection, to ensure that business is not interrupted as far as possible with looped network superposition.But when adopting this looped network to superpose linear mode; as shown in Figure 2; need the configuration in increase linear protection group and linear protection tunnel in Node B and BB and increase linear work tunnel and linear protection tunnel TMP(T-MPLSPath; T-MPLS channel layer) OAM(OperationAdministrationandMaintenance; Operations,Administration And Maintenance) detect, therefore waste transmission bandwidth.In addition, all need to configure linear protection tunnel at each node (as the Node B in Fig. 2 a, C, D, E, DD, CC, BB) of protection link direction, exchange for linear protection tunnel label, therefore, need to increase a large amount of configuration effort amounts.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of crossing tangent ring networks guard method and system, the inter-connection links on protection double-ring intersecting, tangent node.
For solving the problems of the technologies described above, the invention provides a kind of crossing tangent ring networks guard method,
In intersecting or tangent Joint Enterprise two-way operation tunnel of transannular protection, and set up looped network protection group respectively in each direction of described work tunnel.
Further, for double-ring intersecting or tangent node, set up west respectively to looped network protection group and east orientation looped network protection group in the west of described work tunnel to east orientation;
After completing networking, service traffics walk the active link of described west to looped network protection group and the active link of described east orientation looped network protection group.
Further, described method also comprises:
Transport MPLS channel layer Operations,Administration And Maintenance (TMSOAM) detection is all enabled in the direction of the direction of described active link and protection link.
Further, described method also comprises:
When break down to the active link of looped network protection group in described west or described west performs force handoff to looped network protection group; service traffics are switched to the protection link of described west to looped network protection group, service traffics walk west to the protection link of looped network protection group and the active link of east orientation looped network protection group.
Further, described method also comprises:
When the active link of described east orientation looped network protection group breaks down or described east orientation looped network protection group performs force handoff; service traffics are switched to the protection link of described east orientation looped network protection group, service traffics walk west to the active link of looped network protection group and the protection link of east orientation looped network protection group.
Further, described method also comprises:
Active link when from described west to looped network protection group recovers; or described west to looped network protection group perform force switchback time; service traffics are switched to the active link of described west to looped network protection group, service traffics walk west to the active link of looped network protection group and the active link of east orientation looped network protection group.
Further, described method also comprises:
When the active link of described east orientation looped network protection group recovers; or described east orientation looped network protection group perform force switchback time; service traffics are switched to the active link of described east orientation looped network protection group, service traffics walk west to the active link of looped network protection group and the active link of east orientation looped network protection group.
Present invention also offers a kind of crossing tangent ring networks protection system, described system comprises:
Bidirectional tunnel configuration module, intersects for what protect at transannular or tangent node configures two-way operation tunnel;
Looped network protection module, sets up looped network protection group respectively for each direction in described work tunnel.
Further, described looped network protection module is used for, and for double-ring intersecting or tangent node, sets up west respectively to looped network protection group and east orientation looped network protection group in the west of described work tunnel to east orientation;
And configure into the service traffics after networking acquiescence walk the active link of described west to looped network protection group and the active link of described east orientation looped network protection group.
Further, described looped network protection module also for, the direction of described active link and protection link direction all enable TMSOAM detect.
Further, described looped network protection module also for, when break down to the active link of looped network protection group in described west or described west performs force handoff to looped network protection group, service traffics are switched to the protection link of described west to looped network protection group, service traffics walk west to the protection link of looped network protection group and the active link of east orientation looped network protection group;
When the active link of described east orientation looped network protection group breaks down or described east orientation looped network protection group performs force handoff; service traffics are switched to the protection link of described east orientation looped network protection group, service traffics walk west to the active link of looped network protection group and the protection link of east orientation looped network protection group.
Further, described looped network protection module also for, active link when from described west to looped network protection group recovers, or described west to looped network protection group perform force switchback time, service traffics are switched to the active link of described west to looped network protection group, service traffics walk west to the active link of looped network protection group and the active link of east orientation looped network protection group;
When the active link of described east orientation looped network protection group recovers; or described east orientation looped network protection group perform force switchback time; service traffics are switched to the active link of described east orientation looped network protection group, service traffics walk west to the active link of looped network protection group and the active link of east orientation looped network protection group.
The present invention proposes a kind ofly to intersect based on T-MPLS, the bidirectional protective method of tangent ring networks protection, the inter-connection links on protection double-ring intersecting, tangent node.When inter-connection links breaks down, realize transannular business and protect end to end, and ensure that protection switch time is not more than 50ms.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 a shows the networking scene according to two-way intersecting ring network protection of the present invention;
Fig. 1 b shows the networking scene according to two-way tangent ring networks protection of the present invention;
Fig. 2 a shows according to the traffic forwarding path profile under two ring intersecting ring network protection initial conditions of the present invention;
Fig. 2 b shows according to the traffic forwarding path profile under two ring tangent ring networks protection initial conditions of the present invention;
Fig. 3 a shows the traffic forwarding path profile according to two ring intersecting ring network protection scenes one of the present invention;
Fig. 3 b shows the traffic forwarding path profile according to two ring tangent ring networks protection scenes one of the present invention;
Fig. 4 a shows the traffic forwarding path profile according to two ring intersecting ring network protection scenes two of the present invention;
Fig. 4 b shows the traffic forwarding path profile according to two ring tangent ring networks protection scenes two of the present invention;
Fig. 5 a shows the traffic forwarding path profile according to two ring intersecting ring network protection scenes three of the present invention;
Fig. 5 b shows the traffic forwarding path profile according to two ring tangent ring networks protection scenes three of the present invention;
Fig. 6 a shows the traffic forwarding path profile according to two ring intersecting ring network protection scenes four of the present invention;
Fig. 6 b shows the traffic forwarding path profile according to two ring tangent ring networks protection scenes four of the present invention;
Fig. 7 shows the handling process that two rings intersect, tangent ring networks is protected described according to the embodiment of the present invention.
Embodiment
The key problem that the present invention solves is: in the interconnected protection of crossing tangent rings, when the active link intersected on tangent node all lost efficacy, how to carry out switching protection.For solving this technical problem, the present invention proposes a kind of intersect tangent ring networks protection and change method, and its core concept is, carries out business mutually exchange process by two-way two separate looped network protection tunnels.
Based on above-mentioned thought, the present invention proposes a kind of crossing tangent ring networks guard method, the following technical scheme of concrete employing:
In intersecting or tangent Joint Enterprise two-way operation tunnel of transannular protection, and set up looped network protection group respectively in each direction of described work tunnel.
Wherein, for double-ring intersecting or tangent node, set up west respectively to looped network protection group and east orientation looped network protection group in the west of described work tunnel to east orientation;
After completing networking, service traffics walk the active link of described west to looped network protection group and the active link of described east orientation looped network protection group.
In addition, also TMSOAM detection need all be enabled in the direction (also referred to as protection direction) of the direction of described active link (also referred to as operative orientation) and protection link, whether good for detecting each section of layer connectivity in looped network.
Wherein, when break down to the active link of looped network protection group in described west or described west performs force handoff to looped network protection group; service traffics are switched to the protection link of described west to looped network protection group; service traffics walk west, and to the active link of the protection link of looped network protection group and east orientation looped network protection group, (active link herein refers to the effective transfer path of current business; can be active link, also can be protection link).
When the active link of described east orientation looped network protection group breaks down or described east orientation looped network protection group performs force handoff; service traffics are switched to the protection link of described east orientation looped network protection group, service traffics walk west to the active link of looped network protection group and the protection link of east orientation looped network protection group.
Further; active link when from described west to looped network protection group recovers; or described west to looped network protection group perform force switchback time; service traffics are switched to the active link of described west to looped network protection group, service traffics walk west to the active link of looped network protection group and the active link of east orientation looped network protection group.
Further; when the active link of described east orientation looped network protection group recovers; or described east orientation looped network protection group perform force switchback time; service traffics are switched to the active link of described east orientation looped network protection group, service traffics walk west to the active link of looped network protection group and the active link of east orientation looped network protection group.
For the ease of setting forth the present invention, be described in further detail below with reference to the enforcement of drawings and the specific embodiments to technical solution of the present invention.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combination in any mutually.
Be illustrated in figure 1 provided by the invention two-way intersect, tangent ring networks protection networking scene; refer to Fig. 1 a and Fig. 1 b; wherein two rings intersect, tangent P Equipments Setting two looped network protection groups; lay respectively in Eastring, Westring, the protection tunnel of two looped network protection groups is not same protection tunnel.Other equipment in Fig. 1 are then according to normal monocycle configuration networking.
Fig. 2 show two-wayly to intersect, traffic forwarding path profile under tangent ring networks protection group initial condition, refer to Fig. 2, wherein bold portion is the operating path that present flow rate forwards process, is: two-way B<-->A<--GreatT. GreaT.GTP<-->AA<-->BB under initial condition; Dotted portion is the Protection path not having flow, and east, west are all two-way closed loop link to protection link.In Fig. 2 a, west is B<-->C<--GreatT. GreaT.GTD<-->E<-->P<-->ALEssT.LT ssT.LT-->B to protection link paths; East orientation protection link paths is BB<-->CC<--Great T.GreaT.GTDD<-->ELEssT.LTssT. LT-->P<-->AALEs sT.LTssT.LT-->BB.In Fig. 2 b, west is B<-->C<--GreatT. GreaT.GTD<-->E<-->P<-->ALEssT.LT ssT.LT-->B to protection link paths; East orientation protection link paths is BB<-->CC<--Great T.GreaT.GTDD<-->EELEssT.LTssT .LT-->P<-->AALE ssT.LTssT.LT-->BB.
The crossing tangent ring networks protection flow process of the embodiment of the present invention mainly comprises the following steps:
Step 1, two-way crossing, tangent ring networks protection group initial condition, service traffics walk the active link of Eastring protection group and the active link of Westring protection group.
Step 2, the active link of Westring protection breaks down, namely there is loc alarm (lossofcontinuity in westTMS, loss of connectivity), or Westring protection group performs force handoff, then by the protection link of flow switch to Westring protection group, now service traffics walk the protection link of Westring protection group and the active link of Eastring protection group;
Wherein, loc alarm specifically detects by TMSOAM, and such as equipment is according to user configured cycle timed sending message to opposite equip., and then whether the connectedness detecting two equipment is normal.
Step 3, on the basis of step 2, the active link of Eastring protection group breaks down (namely eastTMS exists loc alarm), or Eastring protection group performs force handoff, then by the protection link of flow switch to Eastring protection group, now service traffics walk the protection link of Westring protection group and the protection link of Eastring protection group;
Step 4, on the basis of step 3, Westring protection group active link recovers (i.e. westTMSloc alarm clearing), or Westring protection group performs pressure switchback, then by the active link of flow switch to Westring protection group, now service traffics walk the active link of Westring protection group and the protection link of Eastring protection group;
Step 5, on the basis of step 4, the active link of Eastring protection group recovers (i.e. eastTMSloc alarm clearing), or Eastring protection group performs pressure switchback, then by the active link of flow switch to Eastring protection group, now service traffics walk the active link of Westring protection group and the active link of Eastring protection group;
Can find out, through above-mentioned flow process, complete crossing, tangent P(Provider, service providing device) the various handoff scenario of equipment bidirectional loop network protection protection, and the state at the beginning of returning to network construction.It should be noted that, in above-mentioned steps, the order of fault appearance and recovery is only exemplary description, and in actual applications, west occurs to the fault with east orientation and recovers to there is no certain sequencing.That is, some other situation, such as, first east orientation fault, rear west is to fault; Or first west is to fault, then west is to recovery; And, first western to fault, rear east orientation fault, then east orientation recovers, then is western to recovering namely, western to fault before this, then is east orientation fault, etc., these situations are all likely.
Below in conjunction with several embody rule scene, ring net protection method of the present invention is described in detail.
Scene one
This scene is specially: the active link of Westring protection breaks down (namely westTMS exists loc alarm), or Westring protection group performs force handoff.
Once, by the protection link of flow switch to Westring protection group, now service traffics walk the protection link of Westring protection group and the active link of Eastring protection group to this scene.Fig. 3 show two-way intersect, tangent ring networks protection group at this scene traffic forwarding path profile once, now service path is two-way B<-->A<--GreatT. GreaT.GTB<-->C<-->D<-->ELEssT.LT ssT.LT-->P<-->A A<-->BB.
Scene two
This scene is specially: on the basis of above-mentioned scene one, and the active link of Eastring protection group breaks down (namely eastTMS exists loc alarm), or Eastring protection group performs force handoff.
This scene two times, then by the protection link of flow switch to Eastring protection group, now service traffics walk the protection link of Westring protection group and the protection link of Eastring protection group.Fig. 4 a shows the traffic forwarding path profile of two-way intersecting ring network protection group under this scene two, and now service path is B<-->A<--GreatT. GreaT.GTB<-->C<-->D<-->ELEssT.LT ssT.LT-->P<-->E <-->DD<--GreatT. GreaT.GTCC<-->BBLEssT.LTssT.L T-->AA<-->BB.
Fig. 4 b shows the traffic forwarding path profile of two-way tangent ring networks protection group under this scene, for: B<-->A<--GreatT. GreaT.GTB<-->C<-->D<-->ELEssT.LT ssT.LT-->P<-->E E<-->DD<--GreatT .GreaT.GTCC<-->BBLEssT.LTssT. LT-->AA<-->BB.
Scene three
This scene is specially: on the basis of above-mentioned scene two, and Westring protection group active link recovers (i.e. westTMSloc alarm clearing), or Westring protection group performs pressure switchback.
This scene three times, then by the active link of flow switch to Westring protection group, now service traffics walk the active link of Westring protection group and the protection link of Eastring protection group.Fig. 5 a shows the traffic forwarding path profile of two-way intersecting ring network protection group under this scene three, and now service path is two-way B<-->A<--GreatT. GreaT.GTP<-->E<-->DD<-->CCLEssT. LTssT.LT-->BB<--GreatT.GreaT. GTAA<-->BB.
Fig. 5 b shows the traffic forwarding path profile of two-way tangent ring networks protection group under this scene three, and now service path is B<-->A<--GreatT. GreaT.GTP<-->EE<-->DD<-->CCLEssT. LTssT.LT-->BB<--GreatT.GreaT. GTAA<-->BB.
Scene four
This scene is specially: on the basis of above-mentioned scene three, and the active link of Eastring protection group recovers (i.e. eastTMSloc alarm clearing), or Eastring protection group performs pressure switchback.
This scene four times, then by the active link of flow switch to Eastring protection group, now service traffics walk the active link of Westring protection group and the active link of Eastring protection group.Fig. 5 shows two-way crossing, the traffic forwarding path profile of tangent ring networks protection group under this scene four; now get back to initial condition, service path is two-way B<-->A<--GreatT. GreaT.GTP<-->AA<-->BB.
Two-wayly by above scene description to intersect, the change of tangent ring networks protection group various scene down-off forward-path.
As shown in Figure 7, what the embodiment of the present invention provided intersects, the key step of the bidirectional protective method of tangent ring networks protection is as follows:
Steps A. set up TMPLS network, its networking diagram can see Fig. 1, and must be two-way across two rings in the work tunnel intersected, tangent node P equipment configures, each direction of work tunnel is protected with corresponding ring respectively, sets up looped network protection group and detects with the TMS enabling TMPLS-OAM;
All the other equipment detect according to the TMS of networking situation configuration looped network protection group and TMPLS-OAM, and so far networks are completed;
For the configuration of the P equipment of double-ring intersecting, tangent node; we suppose that the looped network protection group in a direction is for west is to looped network protection group; another direction is east orientation looped network protection group; under initial situation, service traffics walk west to the active link of looped network protection group and the active link of east orientation looped network protection group.
(namely west exists loc alarm to TMS) is broken down to the active link of looped network protection in step B. west; or west performs force handoff to looped network protection group; then by flow switch to west to the protection link of looped network protection group, now service traffics are walked west and are gone out to the protection link of looped network protection group and the active link of east orientation looped network protection group.
Step C. is on the basis of step B; the active link of east orientation looped network protection group breaks down (namely east orientation TMS exists loc alarm); or east orientation looped network protection group is when performing force handoff; then by the protection link of flow switch to east orientation looped network protection group, now service traffics walk west go out to the protection link of looped network protection group and the protection link of east orientation looped network protection group.
Step D. is on the basis of step C; west is recovered (namely west is to TMSloc alarm clearing) to looped network protection group active link; or west to looped network protection group perform force switchback time; then by flow switch to west to the active link of looped network protection group, now service traffics are walked west and are gone out to the active link of looped network protection group and the protection link of east orientation looped network protection group.
Step e. on the basis of step D; the active link of east orientation looped network protection group recovers (i.e. east orientation TMSloc alarm clearing); or east orientation looped network protection group perform force switchback time; then by the active link of flow switch to east orientation looped network protection group, now service traffics walk west go out to the active link of looped network protection group and the active link of east orientation looped network protection group.
Step F. through above-mentioned switching, completed two-wayly to intersect, the various handoff scenario of tangent ring networks protection, and the state at the beginning of returning to network construction.
In addition, additionally provide a kind of crossing tangent ring networks protection system in the embodiment of the present invention, this system mainly comprises:
Bidirectional tunnel configuration module, intersects for what protect at transannular or tangent node configures two-way operation tunnel;
Looped network protection module, sets up looped network protection group respectively for each direction in described work tunnel.
Further, described looped network protection module is used for, and for double-ring intersecting or tangent node, sets up west respectively to looped network protection group and east orientation looped network protection group in the west of described work tunnel to east orientation;
And configure into the service traffics after networking acquiescence walk the active link of described west to looped network protection group and the active link of described east orientation looped network protection group.
Further, described looped network protection module also for, the direction of described active link and protection link direction all enable TMSOAM detect.
Further, described looped network protection module also for, when break down to the active link of looped network protection group in described west or described west performs force handoff to looped network protection group, service traffics are switched to the protection link of described west to looped network protection group, service traffics walk west to the protection link of looped network protection group and the active link of east orientation looped network protection group;
When the active link of described east orientation looped network protection group breaks down or described east orientation looped network protection group performs force handoff; service traffics are switched to the protection link of described east orientation looped network protection group, service traffics walk west to the active link of looped network protection group and the protection link of east orientation looped network protection group.
Further, described looped network protection module also for, active link when from described west to looped network protection group recovers, or described west to looped network protection group perform force switchback time, service traffics are switched to the active link of described west to looped network protection group, service traffics walk west to the active link of looped network protection group and the active link of east orientation looped network protection group;
When the active link of described east orientation looped network protection group recovers; or described east orientation looped network protection group perform force switchback time; service traffics are switched to the active link of described east orientation looped network protection group, service traffics walk west to the active link of looped network protection group and the active link of east orientation looped network protection group.
These are only preferred case study on implementation of the present invention; be not limited to the present invention; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection range that all should belong to the claim appended by the present invention.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
Claims (10)
1. a crossing tangent ring networks guard method, is characterized in that,
In intersecting or tangent Joint Enterprise two-way operation tunnel of transannular protection;
And set up looped network protection group respectively in each direction of described work tunnel, carry out business by two-way two separate looped network protection tunnels and mutually exchange process;
For double-ring intersecting or tangent node, set up west respectively to looped network protection group and east orientation looped network protection group in the west of described work tunnel to east orientation;
When break down to the active link of looped network protection group in described west or described west performs force handoff to looped network protection group, service traffics are switched to the protection link of described west to looped network protection group, service traffics walk west to the protection link of looped network protection group and the active link of east orientation looped network protection group;
Active link when from described west to looped network protection group recovers; or described west to looped network protection group perform force switchback time; service traffics are switched to the active link of described west to looped network protection group, service traffics walk west to the active link of looped network protection group and the active link of east orientation looped network protection group.
2. the method for claim 1, is characterized in that,
After completing networking, service traffics walk the active link of described west to looped network protection group and the active link of described east orientation looped network protection group.
3. method as claimed in claim 2, it is characterized in that, described method also comprises:
All enable transport MPLS channel layer Operations,Administration And Maintenance TMSOAM in the direction of described active link with the direction of protection link to detect.
4. method as claimed in claim 3, it is characterized in that, described method also comprises:
When the active link of described east orientation looped network protection group breaks down or described east orientation looped network protection group performs force handoff; service traffics are switched to the protection link of described east orientation looped network protection group, service traffics walk west to the active link of looped network protection group and the protection link of east orientation looped network protection group.
5. method as claimed in claim 4, it is characterized in that, described method also comprises:
When the active link of described east orientation looped network protection group recovers; or described east orientation looped network protection group perform force switchback time; service traffics are switched to the active link of described east orientation looped network protection group, service traffics walk west to the active link of looped network protection group and the active link of east orientation looped network protection group.
6. a crossing tangent ring networks protection system, is characterized in that, described system comprises:
Bidirectional tunnel configuration module, intersects for what protect at transannular or tangent node configures two-way operation tunnel;
Looped network protection module, sets up looped network protection group respectively for each direction in described work tunnel; Mutually process is exchanged for carrying out business by two-way two separate looped network protection tunnels;
Described looped network protection module is used for, and for double-ring intersecting or tangent node, sets up west respectively to looped network protection group and east orientation looped network protection group in the west of described work tunnel to east orientation;
Described looped network protection module also for, when break down to the active link of looped network protection group in described west or described west performs force handoff to looped network protection group, service traffics are switched to the protection link of described west to looped network protection group, service traffics walk west to the protection link of looped network protection group and the active link of east orientation looped network protection group;
Described looped network protection module also for; active link when from described west to looped network protection group recovers; or described west to looped network protection group perform force switchback time; service traffics are switched to the active link of described west to looped network protection group, service traffics walk west to the active link of looped network protection group and the active link of east orientation looped network protection group.
7. system as claimed in claim 6, is characterized in that,
Described looped network protection module also for, configure into the service traffics after networking acquiescence walk the active link of described west to looped network protection group and the active link of described east orientation looped network protection group.
8. system as claimed in claim 7, is characterized in that,
Described looped network protection module also for, all enable transport MPLS channel layer Operations,Administration And Maintenance TMSOAM detect in the direction of the direction of described active link and protection link.
9. system as claimed in claim 7 or 8, is characterized in that,
Described looped network protection module also for; when the active link of described east orientation looped network protection group breaks down or described east orientation looped network protection group performs force handoff; service traffics are switched to the protection link of described east orientation looped network protection group, service traffics walk west to the active link of looped network protection group and the protection link of east orientation looped network protection group.
10. system as claimed in claim 7 or 8, is characterized in that,
Described looped network protection module also for; when the active link of described east orientation looped network protection group recovers; or described east orientation looped network protection group perform force switchback time; service traffics are switched to the active link of described east orientation looped network protection group, service traffics walk west to the active link of looped network protection group and the active link of east orientation looped network protection group.
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| CN201010594045.8A CN102035714B (en) | 2010-12-17 | 2010-12-17 | A kind of crossing tangent ring networks guard method and system |
| PCT/CN2011/080734 WO2012079418A1 (en) | 2010-12-17 | 2011-10-13 | Method and system for intersecting or tangent ring network protection |
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| CN201010594045.8A CN102035714B (en) | 2010-12-17 | 2010-12-17 | A kind of crossing tangent ring networks guard method and system |
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| CN102035714B (en) * | 2010-12-17 | 2016-03-30 | 中兴通讯股份有限公司 | A kind of crossing tangent ring networks guard method and system |
| CN102868620B (en) * | 2011-07-06 | 2018-07-06 | 中兴通讯股份有限公司 | Transannular service protecting method and device |
| CN102291310B (en) * | 2011-08-24 | 2017-04-26 | 中兴通讯股份有限公司 | Method and device for improving T-MPLS link ring network protection switching performance |
| CN102315987B (en) * | 2011-09-13 | 2017-05-10 | 中兴通讯股份有限公司 | Ring network protection group link switching method and device |
| CN103209088B (en) | 2012-01-17 | 2016-12-28 | 华为技术有限公司 | Ring network label switch path creation method and associated devices and communication system |
| CN102546425B (en) | 2012-01-31 | 2014-11-05 | 华为技术有限公司 | Crossed ring network protection method, equipment and system |
| CN105207871B (en) * | 2014-06-25 | 2020-07-31 | 南京中兴软件有限责任公司 | Double-cut ring network protection method and device |
| CN104135392A (en) * | 2014-08-19 | 2014-11-05 | 烽火通信科技股份有限公司 | Dual-node ring route OAM data protecting method |
| CN109495286B (en) * | 2017-09-13 | 2021-11-12 | 中兴通讯股份有限公司 | Method and device for detecting alarm of multiplex section of intersected ring and computer readable storage medium |
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| CN101677267A (en) * | 2008-09-17 | 2010-03-24 | 中兴通讯股份有限公司 | Method for retransmitting protocol frames in transannular way and sharing nodes in multiple rings of Ethernet |
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| CN1756222A (en) * | 2004-09-27 | 2006-04-05 | 华为技术有限公司 | Looped network and its service realizing method |
| CN101252501A (en) * | 2008-04-07 | 2008-08-27 | 杭州华三通信技术有限公司 | Intersect looped network, node and protecting method of random topology intersect looped network |
| CN101677267A (en) * | 2008-09-17 | 2010-03-24 | 中兴通讯股份有限公司 | Method for retransmitting protocol frames in transannular way and sharing nodes in multiple rings of Ethernet |
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