CN101459538B - Flow forwarding method, device and system - Google Patents
Flow forwarding method, device and system Download PDFInfo
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- CN101459538B CN101459538B CN2008101917582A CN200810191758A CN101459538B CN 101459538 B CN101459538 B CN 101459538B CN 2008101917582 A CN2008101917582 A CN 2008101917582A CN 200810191758 A CN200810191758 A CN 200810191758A CN 101459538 B CN101459538 B CN 101459538B
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Abstract
The embodiment of the invention discloses a flow transmitting method and a flow transmitting device, wherein the method comprises switching flow on a main path to a corresponding standby path when a main path allocated with resource reservation goes wrong, obtaining the allocation about resource reservation on the main path, reserving resources on the standby path according to the allocation about resource reservation on the main path, and doing resource guarantee to the flow transmitted by the standby path. When the main path which is allocated with resource reservation goes wrong, the standby path takes over the allocation about resource reservationon the main path, and does resource guarantee to the flow transmitted on the standby path, and therefore, resource reservation does not need to be pre-done on the standby path any more, the capacity factor of the bandwidth in the standby path is improved, and network resource is saved.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of flow forwarding method, equipment and system.
Background technology
In BGP (Border Gateway Protocol, Border Gateway Protocol) VPN (Virtual PrivateNetworks, VLAN) scene, each VPN can dispose the bandwidth that oneself uses.For example dispose VRF (the VPN Routing ﹠amp of a PE (Provider Edge, Provider Edge) node to another one PE node; Forwarding instances, the VPN route with transmit) can employed bandwidth.Operator is according to this VPN user's bandwidth demand reasonable distribution Internet resources.
In order to improve reliability, a kind of VPN FRR (Fast Re-Routing has been proposed in the prior art, quick heavy-route) technology, operator is in on-premise network, tending to provides one to be equipped with the path for main path, when main path broke down, user's flow can switch to path fully fast like this, thereby the service that guarantees the user is not interrupted.With VPN network scenarios shown in Figure 1 is example, on PE3 with the path of PE1 → PE3 as main path, and, enable the FRR function simultaneously for this VRF1 distributes bandwidth or other quality of service requirement, with the path that is equipped with, the path of PE2 → PE3, to improve service reliability as main path.During the main path operate as normal, the bandwidth between main path PE1 → PE3 is occupied.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
Under the situation of main path operate as normal, be equipped with in the path and do not have service traffics,, will cause bandwidth waste if be equipped with the path occupied bandwidth this moment.If but were equipped with not occupied bandwidth of path, when the main path fault, service traffics will switch to the path fully that no bandwidth guarantees, can't guarantee quality of service so.
Summary of the invention
The embodiment of the invention provides a kind of flow forwarding method and equipment, is used for disposing flexibly the forwarding strategy of path service traffics fully, improves to be equipped with bandwidth utilization in the path.
The embodiment of the invention provides a kind of flow forwarding method, comprising:
When the main path that disposes resource reservation breaks down, the flow on the described main path is switched to the corresponding path that is equipped with;
Obtain on the described main path configuration about resource reservation;
According on the described main path about the configuration of resource reservation, carrying out resource reservation being equipped with on the path, the described described flow of transmitting on the path that is equipped with is carried out resource and guarantees.
The embodiment of the invention also provides a kind of flow forwarding equipment, comprising:
The flow switch unit when main path that is used to dispose resource reservation breaks down, switches to the corresponding path that is equipped with the flow on the described main path;
Resource reservation configuration acquiring unit is used to obtain on the described main path configuration about resource reservation;
The flow retransmission unit, be used for according on the described main path about the configuration of resource reservation, carrying out resource reservation being equipped with on the path, the described described flow of transmitting on the path that is equipped with is carried out resource and guarantees.
The embodiment of the invention also provides a kind of flow repeater system, comprises flow management apparatus, is positioned at first equipment on the main path and is positioned at second equipment that is equipped with on the path, and described flow management apparatus is positioned at described main path and described being equipped with on the path simultaneously,
Described flow management apparatus, be used for when the described main path that disposes resource reservation breaks down, with on the described main path through the flow of described first equipment, switch to being equipped with on the path of the described second equipment place, obtain on the described main path configuration about resource reservation; According on the described main path about the configuration of resource reservation, carrying out resource reservation being equipped with on the path, the described described flow of transmitting on the path that is equipped with is carried out resource and guarantees.
Compared with prior art, the embodiment of the invention has the following advantages:
When the main path that disposes resource reservation breaks down, inherit on the main path configuration by being equipped with the path, and carry out resource and guarantee being equipped with the flow of transmitting on the path about resource reservation.Thereby need not be again carry out resource reservation to being equipped with the path in advance, improve fully bandwidth utilization in the path, for network has been saved resource.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic diagram of a VPN network scenarios in the prior art;
Fig. 2 is the flow chart of flow forwarding method in the embodiments of the invention;
Fig. 3 is another flow chart of flow forwarding method in the embodiments of the invention;
Fig. 4 is a flow chart again of flow forwarding method in the embodiments of the invention;
Fig. 5 is the structural representation of flow forwarding equipment in the embodiments of the invention;
Fig. 6 is another structural representation of flow forwarding equipment in the embodiments of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of flow forwarding method, as shown in Figure 2, comprising:
Step s201, when the main path that disposes resource reservation breaks down, the flow on the main path is switched to the corresponding path that is equipped with.
Step s202, obtain on the main path configuration about resource reservation.
Step s203, according on the main path about the configuration of resource reservation, carrying out resource reservation being equipped with on the path, carry out resource and guarantee being equipped with the flow of transmitting on the path.
In the method that the embodiment of the invention provides, when the main path that disposes resource reservation breaks down, inherit on the main path configuration, and carry out resource and guarantee being equipped with the flow of transmitting on the path about resource reservation by being equipped with the path.Thereby need not be again carry out resource reservation to being equipped with the path in advance, improve fully bandwidth utilization in the path, for network has been saved resource.
Below in conjunction with a concrete application scenarios, the embodiment of flow forwarding method in the embodiment of the invention is described.With above-mentioned BGP VPN scene shown in Figure 1 is example, on PE3 with the path of PE1 → PE3 as main path, enable the FRR function simultaneously, with the path that is equipped with, the path of PE2 → PE3, to improve service reliability as main path.During the main path operate as normal, the bandwidth between main path PE1 → PE3 is occupied.As shown in Figure 3, comprising:
Step s301, configuration about resource reservation policy is carried out in the pairing path that is equipped with of the main path that disposes resource reservation.In the embodiments of the invention, the PE3 for preparing against the path upward can comprise about the configuration of resource reservation policy: (1) is equipped with the path and does not do resource reservation and the forwarding of doing one's best; (2) be equipped with path and main path and dispose resource reservation equally; (3) be equipped with main path is inherited in the path after the main path fault configuration; These three kinds of situations describe.
Step s302, when main path breaks down, the flow on the main path is switched to the corresponding path that is equipped with, and obtain on the main path configuration about resource reservation.Be that the flow that PE3 will flow through on the main path of PE1 place switches to being equipped with on the path of PE2 place, use to be equipped with the path and to transmit this flow.Afterwards, PE3 is by reading the configuration file in internal memory or the storage medium or the mode of configuration order, obtains on the main path configuration about resource reservation.
Step s303, according on the main path about the configuration of resource reservation and be equipped with on the path about the configuration of resource reservation policy, be equipped with converting flow on the path.
Concrete, be equipped with among the step s302 on the path about the configuration of resource reservation obtain the result for " be equipped with the path and do not do resource reservation (best-effort) forwarding of doing one's best " time, be specially in the step that is equipped with converting flow on the path: PE3 does not do resource reservation in described being equipped with on the path, as possible converting flow.
Be equipped with among the step s302 on the path about the configuration of resource reservation obtain the result for " be equipped with the path and dispose resource reservation equally " with main path the time, be specially in the step that is equipped with converting flow on the path: PE3 is utilizing the reserved resource converting flow on the path fully.
Be equipped with among the step s302 on the path about the configuration of resource reservation obtain the result for " being equipped with described main path is inherited in the path after the main path fault configuration " time, be specially in the step that is equipped with converting flow on the path: PE3 is carrying out resource reservation according to the resource requirement configuration of main path on the path fully, after the resource reservation success, PE3 is utilizing the reserved resource converting flow on the path fully; Before the resource reservation success, PE3 is being equipped with the converting flow of doing the best on the path.
The situation of inheriting the configuration of main path in order to the path after the main path fault is an example, and the flow forwarding method in the embodiment of the invention comprises as shown in Figure 4:
Step s401, main path carry out resource reservation according to user's configuration.
Step s402, the path that is equipped with of main path correspondence is configured, is equipped with main path is inherited in the path after the main path fault configuration.
Step s403, main path break down.
Flow on step s404, the main path switches to path fully.
Step s405, be equipped with the path flow is transmitted as possible.
Step s406, be equipped with the path and carry out resource reservation according to the configuration of main path.
After step s407, the resource reservation success, utilizing the reserved resource converting flow on the path fully.
In the method that the embodiment of the invention provides, when the main path that disposes resource reservation breaks down, inherit on the main path configuration, and carry out resource and guarantee being equipped with the flow of transmitting on the path about resource reservation by being equipped with the path.Thereby need not be again carry out resource reservation to being equipped with the path in advance, improve fully bandwidth utilization in the path, for network has been saved resource.In addition; can also on the path flexible strategies be set according to being configured in fully of the resource reservation of main path correspondence to operate being equipped with the path; for example: carry out resource reservation all the time or do not carry out resource reservation all the time to being equipped with the path to being equipped with the path; make in the scene of trail protection, can provide different services for the user according to what be equipped with flexible configuration on the path.
The embodiment of the invention also provides a kind of flow forwarding equipment, as shown in Figure 5, comprising:
Resource reservation configuration acquiring unit 20 when the main path that is used to dispose resource reservation breaks down, switches to the corresponding path that is equipped with the flow on the main path, and obtains on the main path configuration about resource reservation;
In the another embodiment of the present invention, as shown in Figure 6, can also comprise:
Resource reservation policy dispensing unit 40, be used for carrying out about the configuration of resource reservation policy and offering resource reservation configuration acquiring unit 20 being equipped with the path, this resource reservation policy is specially: be equipped with the path in the configuration of inheriting after the main path fault on the main path about resource reservation.
In addition, resource reservation configuration acquiring unit 20 can comprise:
Subelement is obtained in first configuration, is used for obtaining on the main path configuration file or configuration order about resource reservation from internal memory or storage medium.
In addition, flow retransmission unit 30 can comprise:
First flow is transmitted subelement, is used for after the resource reservation success, utilizing the reserved resource converting flow on the path carrying out resource reservation according to the resource requirement configuration of described main path on the path fully fully; Before the resource reservation success, be equipped with the converting flow of doing the best on the path.
The embodiment of the invention also provides a kind of flow repeater system, comprises flow management apparatus, is positioned at first equipment on the main path and is positioned at second equipment that is equipped with on the path, and described flow management apparatus is positioned at described main path and described being equipped with on the path simultaneously,
This flow management apparatus is used for when the described main path that disposes resource reservation breaks down, with on the main path through the flow of first equipment, switch to being equipped with on the path of the second equipment place, and obtain on the main path configuration about resource reservation; According on the main path about the configuration of resource reservation, carrying out resource reservation being equipped with on the path, carry out resource and guarantee being equipped with the flow of transmitting on the path.This flow management apparatus, a networking schematic diagram that is arranged in first equipment on the main path and is positioned at second equipment on the path fully can not be repeated in this description at this with reference to PE3, PE1 and the PE2 of above-mentioned Fig. 1.The concrete structure of this flow management apparatus can not be repeated in this description at this referring to the structure of the flow forwarding equipment of describing among above-mentioned Fig. 5 and Fig. 6.
In the equipment and system that the embodiment of the invention provides, when the main path that disposes resource reservation breaks down, inherit on the main path configuration, and carry out resource and guarantee being equipped with the flow of transmitting on the path about resource reservation by being equipped with the path.Thereby need not be again carry out resource reservation to being equipped with the path in advance, improve fully bandwidth utilization in the path, for network has been saved resource.In addition; can also on the path flexible strategies be set according to being configured in fully of the resource reservation of main path correspondence to operate being equipped with the path; for example: carry out resource reservation all the time or do not carry out resource reservation all the time to being equipped with the path to being equipped with the path; make in the scene of trail protection, can provide different services for the user according to what be equipped with flexible configuration on the path.
Above-mentioned module can be distributed in a device, also can be distributed in multiple arrangement.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (9)
1. a flow forwarding method is characterized in that, comprising:
When the main path that disposes resource reservation breaks down, the flow on the described main path is switched to the corresponding path that is equipped with;
Obtain on the described main path configuration about resource reservation;
According on the described main path about the configuration of resource reservation, carrying out resource reservation being equipped with on the path, the described described flow of transmitting on the path that is equipped with is carried out resource and guarantees.
2. the method for claim 1 is characterized in that, when the described main path that disposes resource reservation breaks down, with the flow on the described main path switch to corresponding be equipped with the path before, also comprise:
Carry out configuration about resource reservation policy to being equipped with the path, described resource reservation policy is specially: the described path that is equipped with is in the configuration of inheriting after the main path fault on the described main path about resource reservation.
3. method as claimed in claim 2 is characterized in that, described according on the described main path about the configuration of resource reservation, carrying out resource reservation being equipped with on the path, the described described flow of transmitting on the path that is equipped with is carried out resource and guarantees to comprise:
Carry out resource reservation in described being equipped with on the path, after the resource reservation success, utilize reserved resource to transmit described flow in described being equipped with on the path according to the configuration of the resource reservation of described main path; Before the resource reservation success, transmit described flow as possible in described being equipped with on the path.
4. a flow forwarding equipment is characterized in that, comprising:
The flow switch unit when main path that is used to dispose resource reservation breaks down, switches to the corresponding path that is equipped with the flow on the described main path;
Resource reservation configuration acquiring unit is used to obtain on the described main path configuration about resource reservation;
The flow retransmission unit, be used for according on the described main path about the configuration of resource reservation, carrying out resource reservation being equipped with on the path, the described described flow of transmitting on the path that is equipped with is carried out resource and guarantees.
5. equipment as claimed in claim 4 is characterized in that, also comprises:
The resource reservation policy dispensing unit is used for carrying out configuration about resource reservation policy to being equipped with the path, and described resource reservation policy is specially: the described path that is equipped with is in the configuration of inheriting after the main path fault on the described main path about resource reservation.
6. as claim 4 or 5 described equipment, it is characterized in that described resource reservation configuration acquiring unit comprises that subelement is obtained in first configuration, be used for obtaining on the main path configuration file or configuration order about resource reservation from internal memory or storage medium.
7. equipment as claimed in claim 5 is characterized in that,
Described flow retransmission unit comprises, first flow is transmitted subelement, is used for being equipped with on the path resource requirement configuration according to described main path and carrying out resource reservation described, after the resource reservation success, utilizes reserved resource to transmit described flow in described being equipped with on the path; Before the resource reservation success, transmit described flow as possible in described being equipped with on the path.
8. a flow repeater system is characterized in that, comprises flow management apparatus, is positioned at first equipment on the main path and is positioned at second equipment that is equipped with on the path, and described flow management apparatus is positioned at described main path and described being equipped with on the path,
Described flow management apparatus, be used for when the described main path that disposes resource reservation breaks down, with on the described main path through the flow of described first equipment, switch to being equipped with on the path of the described second equipment place, obtain on the described main path configuration about resource reservation; According on the described main path about the configuration of resource reservation, carrying out resource reservation being equipped with on the path, the described described flow of transmitting on the path that is equipped with is carried out resource and guarantees.
9. flow repeater system as claimed in claim 8 is characterized in that, described flow management apparatus comprises:
The flow switch unit when the described main path that is used to dispose resource reservation breaks down, switches to the corresponding described path that is equipped with the flow on the described main path;
Resource reservation configuration acquiring unit is used to obtain on the described main path configuration about resource reservation;
The flow retransmission unit, be used for according on the described main path about the configuration of resource reservation, carrying out resource reservation being equipped with on the path, the described described flow of transmitting on the path that is equipped with is carried out resource and guarantees.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101917582A CN101459538B (en) | 2008-12-31 | 2008-12-31 | Flow forwarding method, device and system |
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| CN2008101917582A CN101459538B (en) | 2008-12-31 | 2008-12-31 | Flow forwarding method, device and system |
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| CN101459538A CN101459538A (en) | 2009-06-17 |
| CN101459538B true CN101459538B (en) | 2011-05-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102136950A (en) * | 2011-03-29 | 2011-07-27 | 华为技术有限公司 | Automatic configuration method of static tunnels and network management system |
| CN108023739B (en) * | 2016-10-31 | 2021-04-30 | 中国电信股份有限公司 | Protection switching method and controller |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101022327A (en) * | 2006-10-17 | 2007-08-22 | 信息产业部电信研究院 | Method for realizing protection switching technique in IP telecommunication network system |
| CN101237409A (en) * | 2008-02-27 | 2008-08-06 | 华为技术有限公司 | Method and device for realizing quick re-routing in MPLS VPN |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101022327A (en) * | 2006-10-17 | 2007-08-22 | 信息产业部电信研究院 | Method for realizing protection switching technique in IP telecommunication network system |
| CN101237409A (en) * | 2008-02-27 | 2008-08-06 | 华为技术有限公司 | Method and device for realizing quick re-routing in MPLS VPN |
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