CN101977136A - Data transmission method and device as well as ring network wrapping method and device - Google Patents
Data transmission method and device as well as ring network wrapping method and device Download PDFInfo
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- CN101977136A CN101977136A CN2010105138128A CN201010513812A CN101977136A CN 101977136 A CN101977136 A CN 101977136A CN 2010105138128 A CN2010105138128 A CN 2010105138128A CN 201010513812 A CN201010513812 A CN 201010513812A CN 101977136 A CN101977136 A CN 101977136A
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Abstract
The invention discloses a data transmission method and device. The method comprises the following steps: when working paths are failed or protection switching is triggered manually, bridging a service which passes through a bridging point into a protective closed-loop path, and pressing a path mark of the working path corresponding to a data message into of the service the data message of the service, wherein, the working paths share one protective closed-loop path; and when the data message is sent to a switching point, switching the data message into the corresponding working path for transmission according to the path mark in the data message. The invention further discloses a ring network wrapping method and device. The invention can save path resources and lower configuration management complexity.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of data transmission method and device, and looped network wraparound guard method and device.
Background technology
Looped network section layer protection (wrapping) mainly takes to back up one to one at present the mode of One-to-one Backup in Packet Transport Network, also promptly be respectively each bar operating path independent protection path is provided.Under the One-to-one Backup mode; in order to protect an operating path; need a protection of configuration closed loop path to protect; specifically see also Fig. 1; in Fig. 1; solid line is represented operating path; dotted line represents to protect closed loop path; operating path is NodeA-＞NodeB-＞NodeC-＞NodeD, and the protection closed loop path is at NodeA; NodeB; NodeC; NodeD; NodeE; the loop that forms between NodeF, this protection closed loop path does not have the initial sum destination node; it is a closed loop completely; only and in the ring the initial destination node of the relevant and operating path of node topology without any relation, realize simply.
In network environment shown in Figure 1; if during the link failure between NodeB and the NodeC; the bridge joint switching action is carried out in looped network section layer protection (wrapping); specifically as shown in Figure 2; business is switched to the protection closed loop path at NodeB; and, switch to operating path again through protecting closed loop path to be sent to reverse graft point NodeC.Wherein, the arc dotted line represents that bridge joint switches work among Fig. 2.
But one operating path will one of correspondence be protected closed loop path, cause the waste of path resource (label, management resource etc.), simultaneously in use, also bring the complexity of configuration management.If in this ring N bar operating path is arranged, protect with regard to N closed loop of needs configuration.Though in Packet Transport Network, protection closed loop path occupied bandwidth not when protection does not take place, the configuration management complexity can increase along with the quantity of N and increase.
Further, detect, will expend a large amount of OAM (oam) resource, and be on the increase, will be in uncontrollable state along with the quantity of protection closed loop path if all need to carry out path failure for each bar protection closed loop path; But, if do not define fault detect, when situation such as path configurations mistake or unit exception occurring, location and revise very big workload is all arranged.
At the problem of serious waste of resources in the correlation technique, effective solution is not proposed as yet at present.
Summary of the invention
Main purpose of the present invention is to provide a kind of data transmission method and device, and a kind of looped network wraparound guard method and device, to solve the wasting of resources of above-mentioned path at least, configuration management complexity problem of higher.
According to an aspect of the present invention, provide a kind of data transmission method, having comprised:
When operating path lost efficacy to take place or manual activation protection when switching, will be bridged to the protection closed loop path through the business of bridge contact, and in the data message of described business, be pressed into the path tag of its corresponding operating path; Wherein, each operating path is shared a protection closed loop path;
When described data message is sent to changeover points, described data message is switched to corresponding operating path transmission according to the path tag in the described data message.
More excellent, according to the path tag in the described data message described data message is sent to after the corresponding operating path, also comprise: the path tag in the described data message is ejected.
More excellent, also comprise: when described data message is sent to other nodes except that changeover points, directly be forwarded to next node.
More excellent, described business comprises one way traffic and two-way services.
According to a further aspect in the invention, provide a kind of looped network wraparound guard method, be applied to comprise in the Packet Transport Network:
Dispose a protection closed loop path, and with operating path bindings all in described protection closed loop path and the described Packet Transport Network;
When operating path lost efficacy to take place or manual activation protection when switching, will be bridged to described protection closed loop path through the business of bridge contact.
According to a further aspect in the invention, provide a kind of data transmission device, having comprised:
Mark is pressed into module, is used for lost efficacy taking place or manual activation protection when switching when operating path, will be bridged to the protection closed loop path through the business of bridge contact, and be pressed into the path tag of its corresponding operating path in the data message of described business; Wherein, each operating path is shared a protection closed loop path;
Switch module, be used for when described data message is sent to changeover points, described data message is switched to corresponding operating path transmission according to the path tag in the described data message.
More excellent, also comprise: pop-up module, be used for described data message being switched to after the corresponding operating path transmission according to the path tag of described data message, the path tag in the described data message is ejected.
More excellent, also comprise: forwarding module is used for directly being forwarded to next node when described data message is sent to other nodes except that changeover points.
According to a further aspect in the invention, provide a kind of looped network wraparound protective device, having comprised:
Binding module is used to dispose a protection closed loop path, and with operating path bindings all in described protection closed loop path and the described Packet Transport Network;
Bridge module is used for lost efficacy taking place or manual activation protection when switching when operating path, will be bridged to described protection closed loop path through the business of bridge contact.
By the present invention; only dispose a protection closed loop path; and will protect operating path bindings all in closed loop path and the Packet Transport Network; article one, the protection closed loop path is protected all working path (having at least) in netting; can save the path resource; and; the configuration management complexity can not increase along with the quantity of N and increase; can reduce the configuration management complexity relatively; follow-up need carry out fault detect to a protection closed loop path; spent detection messages bandwidth seldom is in controllable state.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the operating path and protection closed loop path configuration schematic diagram of the looped network section layer protection that provide of correlation technique;
Fig. 2 is the schematic diagram of the bridge joint switching action of the looped network section layer protection that provide of correlation technique;
Fig. 3 is the flow chart of the looped network wraparound guard method that provides of the embodiment of the invention;
Fig. 4 is the network environment schematic diagram that only disposes a protection closed loop path that the embodiment of the invention provides;
Fig. 5 is the schematic diagram that the bridge joint switching action is carried out in looped network section layer protection that the embodiment of the invention provides;
Fig. 6 is the flow chart of the data transmission method that provides of the embodiment of the invention;
Fig. 7 is the form schematic diagram that the data message that obtains after the path tag of its corresponding operating path is provided in the data message of the business that provides of the embodiment of the invention;
Fig. 8 be the embodiment of the invention provide data message is switched to the processing procedure schematic diagram of corresponding operating path transmission according to the path tag in the data message;
Fig. 9 is the protect networks closed loop path configuration schematic diagram that comprises plural operating path that the embodiment of the invention provides;
Figure 10 is the flow chart of the instantiation of the data transmission method that provides of the embodiment of the invention;
Figure 11 is first kind of structural representation of the data transmission device that provides of the embodiment of the invention;
Figure 12 is second kind of structural representation of the data transmission device that provides of the embodiment of the invention;
Figure 13 is the third structural representation of the data transmission device that provides of the embodiment of the invention;
Figure 14 is the structural representation of the looped network wraparound protective device that provides of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
For solving the problem of the serious waste of resources of mentioning in the prior art, the embodiment of the invention provides a kind of looped network wraparound guard method, is applied in the Packet Transport Network, and handling process comprises as shown in Figure 3:
Step 302, a protection of configuration closed loop path, and will protect operating path bindings all in closed loop path and the Packet Transport Network;
Step 304, when operating path lost efficacy to take place or manual activation protection when switching, will be bridged to this protection closed loop path through the business of bridge contact.
Adopt looped network wraparound guard method as shown in Figure 3; only dispose a protection closed loop path; and will protect operating path bindings all in closed loop path and the Packet Transport Network; article one, the protection closed loop path is protected all working path (having at least) in netting; can save the path resource; and the configuration management complexity can not increase along with the quantity of N and increase, and can reduce the configuration management complexity relatively.
In embodiments of the present invention; the schematic diagram that only disposes the instantiation of a protection closed loop path in the Packet Transport Network sees also Fig. 4; in Fig. 4, comprise operating path 1 and operating path 2; represent with solid line and choice refreshments dotted line respectively, use line segment to represent with the dotted line that point combines with unique protection closed loop path of operating path 1 and operating path 2 bindings.
In network environment shown in Figure 4; if during the link failure between NodeB and the NodeC; the bridge joint switching action is carried out in looped network section layer protection (wrapping); specifically as shown in Figure 5; the business of operating path 1 and operating path 2 is switched to the protection closed loop path at NodeB, and is sent to reverse graft point NodeC through the protection closed loop path.
On the application foundation of the looped network wraparound guard method that the embodiment of the invention provides, the embodiment of the invention also provides a kind of data transmission method, and specifically handling process is as shown in Figure 6:
Step 602, when operating path lost efficacy to take place or manual activation protection when switching, will be bridged to the protection closed loop path through the business of bridge contact, and in the data message of business, be pressed into the path tag of its corresponding operating path; Wherein, each operating path is shared a protection closed loop path;
Step 604, when data message is sent to changeover points, according to the path tag in the data message data message is switched to corresponding operating path transmission.
When implementing, adopt when flow process is transmitted as shown in Figure 6, only need a protection closed loop path is carried out fault detect, spent detection messages bandwidth seldom is in controllable state.
During enforcement, the form schematic diagram that is pressed into the data message that obtains after the path tag of its corresponding operating path in the data message of business comprises packet head, tunnel label, path tag and customer data as shown in Figure 7 at least.
In one embodiment, step 604 is when implementing, according to the path tag in the data message data message is switched to corresponding operating path transmission, concrete processing procedure as shown in Figure 8, when NodeC is changeover points, resolve the path tag of obtaining in the data message at the NodeC place, and data message is switched to corresponding operating path 1 or operating path 2.
During enforcement, looped network wraparound guard method that the embodiment of the invention provides and data transmission method not merely are applicable to the network that comprises operating path 1 and operating path 2, also be applicable to the network that comprises plural operating path, when this network comprises N operating path, utilize N+1 bar link as the protection closed loop path, schematic diagram sees also Fig. 9, the clockwise operating path 1 of configuration in the ring, (2.....N N is the number of paths of configuration in the ring), dispose common protection closed loop path, counterclockwise; Set up the trail protection relation, all operating paths 1,2....N are all bound with this protection closed loop path N+1; Define the mark of unique identification for each bar operating path.Concise and to the point for explanation herein, can be " 1 " to operating path 1 defined label, operating path 2 defined labels are " 2 " ... operating path N defined label is " N ".
During enforcement, path tag only is used for the different business of changeover points identification, for guaranteeing the accuracy of follow-up data message transmission, data message is sent to after the operating path of correspondence, path tag in the data message can also be ejected, avoid in data message, inserting path tag and cause in the subsequent transmission by the problem of other network elements or equipment specified data mistake.
When implementing, when data message is sent to other nodes except that changeover points, directly be forwarded to next node, do not do other processing.
Now describe with an instantiation, in this example, network environment is identical with the network environment of Fig. 3, Fig. 4, and operating path 1 and operating path 2 are clockwise one way traffic among the figure, the two-way services principle is identical with one way traffic, do not do detailed argumentation herein, specifically handling process is as shown in figure 10:
Step 1002, bridge contact notice changeover points are confirmed to switch;
Concrete, when the link failure between NodeB and the NodeC, data message can not be forwarded to NodeC by operating path 1 and operating path 2, at the NodeB point bridge joint takes place; (NodeB＜-NodeC is the common path of operating path 1 and operating path 2, the link failure between NodeA and the NodeB is identical; NodeA＜-NodeF, NodeC＜-link failure of NodeD, only with wherein the part path is relevant, then carry out the part path switching; NodeE＜-NodeF, NodeE＜-link failure and the path 1 and 2 of NodeD is all uncorrelated, and the path does not switch);
Step 1004, bridge contact are bridged to the protection closed loop path with the data message of all protected business from operating path, and are pressed into the ID of trace route path of operating path in data message, transmit;
Concrete, be pressed into mark value " 1 " as the data message of operating path 1, the data message of operating path 2 is pressed into mark value " 2 ";
Whether step 1006, the professional data message of judgement are forwarded to changeover points by the protection closed loop path, if, execution in step 1008, if not, execution in step 1010;
Concrete, after business is bridged, because the heading more than the tunnel label is consistent with general data, so transmit at the protection closed loop path by tunnel label, through NodeB-＞NodeA-＞NodeF-＞NodeE-＞NodeD-＞NodeC, be sent to the NodeC point by the protection closed loop path;
Step 1008, changeover points are forwarded to corresponding operating path by the identification ID of trace route path with business;
The data message that carries ident value " 1 " is switched to path 1 and transmits (ejection value " 1 " in the data message simultaneously), and the data message that carries ident value " 2 " is switched to path N and transmits (ejection value " 2 " in the data message simultaneously);
Step 1010, business are forwarded to next node according to the tunnel traffic flow process, do not process.
After step 1008 was implemented, business can be sent to destination node according to operating path.
Based on same inventive concept, the embodiment of the invention also provides a kind of data transmission device, and its concrete structure comprises as shown in figure 11:
Mark is pressed into module 1101, is used for lost efficacy taking place or manual activation protection when switching when operating path, will be bridged to the protection closed loop path through the business of bridge contact, and be pressed into the path tag of its corresponding operating path in the data message of business; Wherein, each operating path is shared a protection closed loop path;
In one embodiment, as shown in figure 12, data transmission device can also comprise:
Pop-up module 1201 is used for according to the path tag of data message data message being switched to after the corresponding operating path transmission, and the path tag in the data message is ejected.
In one embodiment, as shown in figure 13, data transmission device can also comprise:
Forwarding module 1301 is used for directly being forwarded to next node when data message is sent to other nodes except that changeover points.
Based on same inventive concept, the embodiment of the invention also provides a kind of looped network wraparound protective device, is applied in the Packet Transport Network, and its concrete structure comprises as shown in figure 14
Binding module 1401 is used to dispose a protection closed loop path, and will protect operating path bindings all in closed loop path and the described Packet Transport Network;
As can be seen from the above description, the present invention has realized following technique effect:
The method that adopts the embodiment of the invention to provide; only dispose a protection closed loop path; and will protect operating path bindings all in closed loop path and the Packet Transport Network; article one, the protection closed loop path is protected all working path (having at least) in netting; can save the path resource; and; the configuration management complexity can not increase along with the quantity of N and increase; can reduce the configuration management complexity relatively; follow-up need carry out fault detect to a protection closed loop path; spent detection messages bandwidth seldom is in controllable state.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a data transmission method is characterized in that, comprising:
When operating path lost efficacy to take place or manual activation protection when switching, will be bridged to the protection closed loop path through the business of bridge contact, and in the data message of described business, be pressed into the path tag of its corresponding operating path; Wherein, each operating path is shared a protection closed loop path;
When described data message is sent to changeover points, described data message is switched to corresponding operating path transmission according to the path tag in the described data message.
2. method according to claim 1 is characterized in that, according to the path tag in the described data message described data message is sent to after the corresponding operating path, also comprises: the path tag in the described data message is ejected.
3. method according to claim 1 and 2 is characterized in that, also comprises: when described data message is sent to other nodes except that changeover points, directly be forwarded to next node.
4. method according to claim 1 and 2 is characterized in that described business comprises one way traffic and two-way services.
5. a looped network wraparound guard method is applied to it is characterized in that in the Packet Transport Network, comprising:
Dispose a protection closed loop path, and with operating path bindings all in described protection closed loop path and the described Packet Transport Network;
When operating path lost efficacy to take place or manual activation protection when switching, will be bridged to described protection closed loop path through the business of bridge contact.
6. a data transmission device is characterized in that, comprising:
Mark is pressed into module, is used for lost efficacy taking place or manual activation protection when switching when operating path, will be bridged to the protection closed loop path through the business of bridge contact, and be pressed into the path tag of its corresponding operating path in the data message of described business; Wherein, each operating path is shared a protection closed loop path;
Switch module, be used for when described data message is sent to changeover points, described data message is switched to corresponding operating path transmission according to the path tag in the described data message.
7. device according to claim 6 is characterized in that, also comprises:
Pop-up module is used for according to the path tag of described data message described data message being switched to after the corresponding operating path transmission, and the path tag in the described data message is ejected.
8. according to claim 6 or 7 described devices, it is characterized in that, also comprise:
Forwarding module is used for directly being forwarded to next node when described data message is sent to other nodes except that changeover points.
9. a looped network wraparound protective device is applied to it is characterized in that in the Packet Transport Network, comprising:
Binding module is used to dispose a protection closed loop path, and with operating path bindings all in described protection closed loop path and the described Packet Transport Network;
Bridge module is used for lost efficacy taking place or manual activation protection when switching when operating path, will be bridged to described protection closed loop path through the business of bridge contact.
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| CN2010105138128A CN101977136A (en) | 2010-10-20 | 2010-10-20 | Data transmission method and device as well as ring network wrapping method and device |
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| CN2010105138128A CN101977136A (en) | 2010-10-20 | 2010-10-20 | Data transmission method and device as well as ring network wrapping method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103179013A (en) * | 2011-12-21 | 2013-06-26 | 中兴通讯股份有限公司 | Looped network protection achieving method and system |
| CN103905322A (en) * | 2012-12-26 | 2014-07-02 | 上海贝尔股份有限公司 | Method and equipment for realizing data transmission via PTN |
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| US20070149292A1 (en) * | 2004-09-01 | 2007-06-28 | Igt | Gaming system having multiple gaming devices that share a multi-outcome display |
| CN101431459A (en) * | 2008-12-17 | 2009-05-13 | 烽火通信科技股份有限公司 | Looped network protection method for transmitting multiprotocol label switching network |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070149292A1 (en) * | 2004-09-01 | 2007-06-28 | Igt | Gaming system having multiple gaming devices that share a multi-outcome display |
| CN1866856A (en) * | 2005-09-20 | 2006-11-22 | 华为技术有限公司 | Path protecting method in MESH network |
| CN101431459A (en) * | 2008-12-17 | 2009-05-13 | 烽火通信科技股份有限公司 | Looped network protection method for transmitting multiprotocol label switching network |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103179013A (en) * | 2011-12-21 | 2013-06-26 | 中兴通讯股份有限公司 | Looped network protection achieving method and system |
| CN103905322A (en) * | 2012-12-26 | 2014-07-02 | 上海贝尔股份有限公司 | Method and equipment for realizing data transmission via PTN |
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Application publication date: 20110216 |