CN101494601B - Method and apparatus for configuring down data - Google Patents
Method and apparatus for configuring down data Download PDFInfo
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- CN101494601B CN101494601B CN2009100045406A CN200910004540A CN101494601B CN 101494601 B CN101494601 B CN 101494601B CN 2009100045406 A CN2009100045406 A CN 2009100045406A CN 200910004540 A CN200910004540 A CN 200910004540A CN 101494601 B CN101494601 B CN 101494601B
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Abstract
The invention provides a downstream data configuration method and a device thereof, wherein, the data contains an inner-layer label and an outer-layer label which include priority information. The downstream data configuration method comprises the following steps: the priority information of the inner-layer label is modified, and the outer-layer label of the modified data is removed. Through a self-loopback function of a middle port of an edge switch and after the loopback of the data with the modified priority information of the inner-layer label, the downstream data configuration method and the device forward the data to a customer port so as to realize the process of removing the outer-layer label, overcome the problem in the prior art that the two operations cannot be simultaneously executed, and consequently lead the modified data to satisfy certain requirements of SVLAN businesses and save system resources.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of downstream data configuration method and device.
Background technology
Select VLAN (Selective Virtual Local Area Network, abbreviating SVLAN as) technology is a kind of VLAN (VLAN) tunneling technique, this SVLAN technology also can be called QinQ (802.1Q-in-802.1Q) technology or 802.1Q tunneling (802.1Q tunnel) technology etc.
At present, the principle of SVLAN technology is: for the packet of uplink, promptly, packet (is the switch of connection service network and user network from user network by edge switch, be positioned at core net) transfer to service provider's net (hereinafter referred is a service network), at packet when user network arrives edge switch, the service provider of management edge switch increases a VLAN label again outside the VLAN label that this packet carries, the VLAN label of this increase is commonly referred to service provider VLAN (Service Provider VLAN, abbreviate SPVLAN as) label, be used to distinguish different business.This SPVLAN label can shield the inner VLAN label, and (this inner VLAN label is the VLAN label that above-mentioned packet carries, can be called user vlan (Customer VLAN, abbreviate CVLAN as) label), promptly, in the uplink of packet, network only need be transmitted packet according to the SPVLAN label; For the packet of downlink transfer, that is, packet transfers to user network from service network by edge switch, when packet arrives edge switch, removes the SPVLAN label again.
Above-mentioned VLAN label (comprising SPVLAN label and CVLAN label) mainly comprises VLAN sign (VLAN Identifier, abbreviate vid as) and priority (priority) information, user that the vid that network carries according to the VLAN label respectively is different with the priority data separation (comprising domestic consumer and VIP user) and different business (distinguishing) with precedence information.For example: the vid of VLAN label is 100, and the packet of then representing to carry this VLAN label is from domestic consumer, if vid is 101, then expression is carried the packet of this VLAN label from VIP user; The priority information of VLAN label is 0, then to carry the priority of data packets of this VLAN label the highest in expression, the Internet resources that such business takies are more, such as the demanding business of real-times such as voice and video, if the priority information of VLAN label is 7, then to carry the priority of data packets of this VLAN label minimum in expression, and the Internet resources that such business takies are less, such as data services such as browsing pages.Usually, the VLAN label has the priority information of an acquiescence, and for example, priority information is 0.
Operation for add the SPVLAN label for the packet of uplink comprises vid and priority information that the SPVLAN label is set.For vid, directly be provided with by the service provider; For priority information, can have following dual mode to be provided with: (one) is directly distributed by the service provider, promptly, the fixedly priority that distributes 0-7, at this moment, internal layer priority (being the priority information of CVLAN label) may be identical with outer priority (being the priority information of SPVLAN label), also may be different; (2) be mapped to outer priority by the internal layer priority with packet, at this moment, internal layer priority is identical with outer priority.
For the packet of downlink transfer, the internal layer priority to packet does not require at present.But along with the continuous development of network, some SVLAN business has also had new demand.For these SVLAN business, can select one usually and carry out following operation when descending: (one) revises the internal layer priority information of packet, can be directly to be distributed by the service provider, perhaps according to outer priority information mapping; (2) remove outer layer label (being the SPVLAN label).
But, because service provider is for downlink data corresponding business Resources allocation according to the precedence information of vpn label, therefore, if do not revise the precedence information of vpn label, the precedence information of vpn label is exactly the limit priority of acquiescence so, like this, service provider will dispose the resource of limit priority correspondence and give the downlink data corresponding business, and this has caused resource waste.On the other hand, do not carry out the removal operation if only carry out above-mentioned retouching operation, then the data that have double-layer label can be sent to down link, cause to satisfy the demand of SVLAN business.
In sum, because present processing scheme can't be carried out above-mentioned two operations simultaneously, that is, can only carry out an operation in above-mentioned two operations, will cause the packet of the only above-mentioned once-through operation of process can't satisfy the demand of SVLAN business and the problem of system resource waste.
Summary of the invention
Can't carry out the above-mentioned two kinds of demands that can't satisfy some SVLAN business of operating and causing and the problem of system resource waste simultaneously at above-mentioned edge switch, for this reason, the present invention aims to provide a kind of improved downlink data allocation plan, one of to address the above problem at least.
According to an aspect of the present invention, provide a kind of downstream data configuration method, wherein, data comprise vpn label and outer layer label, and vpn label and outer layer label comprise precedence information.
Downstream data configuration method according to the present invention comprises: the precedence information of revising vpn label; Remove the outer layer label of amended data.
According to a further aspect in the invention, provide a kind of downlink data inking device, be used to dispose the data that comprise vpn label and outer layer label.
Downlink data inking device according to the present invention comprises: administration module is used to revise the precedence information of vpn label; Processing module is used to remove the outer layer label from the data of administration module.
By means of technique scheme one of at least, Centronics port by edge switch from loop fuction, with the data of having revised the vpn label precedence information again behind the loopback, be forwarded to client port, to remove the processing of outer layer label, overcome in the prior art and can't carry out the problem of above-mentioned two kinds of operations simultaneously, and then made amended data satisfy the demand of some SVLAN business, saved system resource.
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 flow chart according to the downstream data configuration method of the inventive method embodiment;
Fig. 2 is the flow chart according to the detailed process of the downstream data configuration method of the inventive method embodiment;
Fig. 3 is the block diagram according to the downlink data inking device of apparatus of the present invention embodiment;
Fig. 4 is the preferred block diagram according to the downlink data inking device of apparatus of the present invention embodiment.
Embodiment
Functional overview
For the packet of downlink transfer, the internal layer priority to packet does not require at present in correlation technique.But along with the continuous development of network, some SVLAN business has also had new demand.For these SVLAN business, if the service provider requires the Qos up-downgoing of service network and user network relevant, then must carry out following operation simultaneously when descending: (one) revises the internal layer priority information of packet; (2) remove outer layer label (being the SPVLAN label).
Because in the prior art, the Centronics port of edge switch is after the modification of having carried out the precedence information of the vpn label of downlink data, downlink data directly is forwarded to down link from client port, therefore can't remove the outer layer label of downlink data, like this, the downlink data with double-layer label is the demand that can't satisfy some SVLAN business of the prior art.Based on this, the invention provides a kind of downstream data configuration method, promptly, after the vpn label priority of revising downlink data, also remove the operation of outer layer label, the downlink data of going out from client port is exactly the downlink data of having revised vpn label priority and having had single layer label like this, can satisfy the demand of some SVLAN business.
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.Need to prove that if do not conflict, embodiment and the feature among the embodiment among the application can make up mutually.
Method embodiment
According to the embodiment of the invention, a kind of downstream data configuration method is provided, be applied to the SVLAN downlink business, wherein, downlink data comprises above-mentioned inner VLAN label (abbreviating vpn label as) and above-mentioned outside VLAN label (abbreviating outer layer label as).Fig. 1 is the flow chart according to the downstream data configuration method of the embodiment of the invention, and as shown in Figure 1, this downstream data configuration method comprises step 102 and step 104.
The up link of edge switch (Uplink) mouthful reception is from the downlink data of service network, and this downlink data comprises two-layer VLAN label, that is, and and outer layer label and vpn label.Because the Qos up-downgoing of some SVLAN service needed service network and user network is relevant, therefore,, need carry out step 102 and step 104 shown in Figure 1 by the Centronics port of edge switch for the downlink data that enters into user network.At first, edge switch judges whether the downlink data that the Uplink mouth receives is current pending professional corresponding data, if, then proceed to step 102, otherwise, this downlink data directly abandoned.
Step 102, the precedence information of modification vpn label.The precedence information here is used for digital 0-7 and represents, priority ascending arrangement of height or descending arrangement.Usually, the default priority of inside/outside layer label is a limit priority.
In practical operation, the method for revising the precedence information of vpn label comprises following two kinds: (one) makes amendment according to the demand of service provider, that is, service provider directly disposes the precedence information of determining according to its actual demand and gives vpn label; For example, service provider is according to its demand, and the priority of determining current pending business is the highest (representing with 0), and then service provider is that the vpn label with these pending professional corresponding downstream data is given in " 0 " configuration with precedence information; (2) make amendment according to the precedence information of outer layer label, that is, the precedence information of vpn label is determined by the precedence information of outer layer label; Preferably, can be with the precedence information of outer layer label precedence information as vpn label, that is, directly with the precedence information " copy " of outer layer label to vpn label; Perhaps also the priority of outer layer label can be mapped to the priority of vpn label with certain corresponding relation.
After Centronics port had been carried out above-mentioned steps 102, Centronics port can be with amended downlink data output.At this moment, Centronics port can by self from loop fuction amended downlink data loopback to Centronics port is proceeded remove to handle, and be forwarded to client port by Centronics port, carry out following step 104 by client port.Wherein, from loopback, that is, will export as input.
Step 104 is removed the outer layer label of amended data.Client port is removed the outer layer label of downlink data by client port after having received from the modification of Centronics port the downlink data of internal layer priority (downlink data of this moment is the data that have double-layer label).Then, the downlink data of having revised vpn label, having removed outer layer label is carried out descending transmission, that is, downlink data is sent to user network or user terminal by client port.
The operation of above-mentioned concrete removal outer layer label can repeat no more here with reference to the operation of removing outer layer label in the prior art.
By above description as can be seen, by Centronics port utilize self from loop fuction, double-deck downlink data is handled, than prior art, realized to be configured to satisfy the downlink data of some SVLAN business demand from the downlink data of service network at edge switch, thereby can satisfy the demand of some SVLAN business, and the resource of the system of saving.
Below handle the idiographic flow of downlink data to provide edge switch.
(1) the Uplink mouth of edge switch receives from double-deck packet service network, that need be sent to user network, and this bilayer packet is current pending professional corresponding packet.This bilayer packet is forwarded to Centronics port by after for the first time the chip forwarding logic is handled, and revises the precedence information of the vpn label of double-deck packet by Centronics port,, revises the priority of CVLAN (that is, above-mentioned vpn label) that is.Then, Centronics port sends amended double-deck packet.
(2) Centronics port utilize self from loop fuction, amended double-deck packet loopback is advanced Centronics port, that is, amended double-deck packet as input, is made this amended double-deck packet carry out second time chip forwarding logic and handles.Then, Centronics port should be forwarded to Customer mouth (that is above-mentioned client port) by amended double-deck packet.
(3) the Customer mouth is responsible for removing outer layer label (tag), has obtained revising CVLANpriority single label data bag afterwards, and this packet can satisfy the demand of SVLAN business.
Fig. 2 is the flow chart according to the detailed process process of the downstream data configuration method of the embodiment of the invention, and as shown in Figure 2, this downstream data configuration method specifically comprises:
Step 201, the Uplink mouth of edge switch receives packet, and this packet includes two-layer SVLAN label, that is, and above-mentioned vpn label and outer layer label;
Step 203 abandons this packet or this packet is carried out other processing;
Step 204 is forwarded to Centronics port with packet, carry out to revise the operation of the internal layer precedence information of packet by Centronics port,, revises internal layer Priority that is, and retouching operation can be with reference to the description in the above-mentioned steps 102 particularly, and execution in step 205;
Step 206, edge switch are carried out streamline logical process for the second time,, judge whether this amended packet is pending professional corresponding packet, if proceed to step 208, otherwise proceed to step 207 that is;
Step 208, Centronics port is forwarded to the Customer mouth with amended packet;
Step 209, what the Customer mouth received is the packet that has the double-deck tag that has revised internal layer Priority, and the Customer mouth is removed outer tag, and the packet of this moment is single internal layer tag, and the Customer mouth is transmitted packet, to carry out downlink transfer.
By above description as can be seen, the embodiment of the invention utilize Centronics port from loop fuction, the SVLAN business that the single treatment flow process be can not be completed is finished by twice flow process, than prior art, the present invention does not influence forwarding of data efficient, do not need extra equipment yet, just can overcome the problems of the prior art, and the resource of the system of saving.
Need to prove, for convenience of description, in Fig. 1 and Fig. 2, illustrated and described the technical scheme of method embodiment of the present invention, can in computer system, carry out such as a set of computer-executable instructions in the step shown in Fig. 1 and Fig. 2 with the form of step.Though in Fig. 1 and Fig. 2, logical order has been shown, in some cases, can have carried out step shown or that describe with the order that is different from herein.
Device embodiment
According to the embodiment of the invention, a kind of downlink data inking device is provided, be used to dispose the data that comprise vpn label and outer layer label.Preferably, this downlink data inking device is used for realizing the method for said method embodiment.Fig. 3 is the block diagram according to the downlink data inking device of the embodiment of the invention, and as shown in Figure 3, this downlink data inking device comprises: administration module 1 and processing module 2, and wherein, administration module 1 is used to revise the precedence information of vpn label; Processing module 2 is connected to administration module 1, is used to remove the outer layer label from the data of administration module 1.
Above-mentioned administration module 1 is revised the precedence information of vpn label, can revise according to the demand of service provider or according to the precedence information of outer layer label.Retouching operation can be realized with reference to the step 102 the operation described process among the said method embodiment particularly, repeats no more here.
In specific implementation process, administration module 1 can be Centronics port in the above-mentioned edge switch or equipment with above-mentioned Centronics port function, promptly, have from loop fuction and revise the equipment of internal layer precedence information, and need be by having revised the data forwarding of vpn label priority to processing module 2 from loop fuction on it.Processing module 2 can be above-mentioned Customer mouth, perhaps has the equipment of above-mentioned Customer mouth function,, can remove the equipment of the outer layer label of double-deck packet that is.
By foregoing description as can be seen, by administration module 1 and 2 pairs of double-deck data of processing module carried out satisfy some SVLAN business processing (promptly, revised the priority of vpn label and removed outer layer label), than prior art, the present invention does not influence forwarding of data efficient, do not need extra equipment yet, just can overcome the problems of the prior art, save the resource of system.
Fig. 4 is the preferred block diagram according to the downlink data inking device of the embodiment of the invention, as shown in Figure 4, this downlink data inking device is except the module shown in above-mentioned Fig. 3, also comprise: judge module 3, discard module 4, forwarding module 5, sending module 6, wherein, judge module 3 is connected to forwarding module 5, is used to judge whether the data that receive by upstream Interface are the data of current pending business; Discard module 4 is used to abandon data; Forwarding module 5, be connected to judge module 3, administration module 1 and discard module 4, the judged result that is used at judge module 3 is that data are under the data conditions of current pending business, forwards the data to administration module 1, otherwise, forward the data to discard module 4; Sending module 6 is connected to processing module 2, is used for the data after processing module 2 processing are carried out descending transmission.
In specific implementation process, above-mentioned judge module 3 judges at first whether the data that receive are current pending professional corresponding data, if, then forward the data to the make amendment processing of precedence information of vpn label of administration module 1 by forwarding module 5, if not, then forward the data to discard module 4, data are abandoned by forwarding module 5.
In sum, by utilize Centronics port from loop fuction, make packet can carry out secondary chip forwarding logic, the business that logic in the prior art be can not be completed is divided into twice and operates, thereby by twice modification of packet being satisfied the downlink data packet of SVLAN business, and do not need miscellaneous equipment.Than prior art, the present invention neither influences forwarding of data efficient, does not also need extra equipment, just can satisfy the demand of some SVLAN business, and the resource of the system of saving.
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, 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. downstream data configuration method, wherein, data comprise vpn label and outer layer label, and described vpn label and described outer layer label comprise precedence information, it is characterized in that, and described method comprises:
Revise the precedence information of described vpn label;
Remove the described outer layer label of amended described data;
Wherein, after the precedence information of revising described vpn label, further comprise: by the Centronics port that disposes from loop fuction amended described data are carried out loopback to client port, remove the described outer layer label of described data for subsequent treatment.
2. method according to claim 1 is characterized in that, before the priority of revising described vpn label, further comprises:
Receive described data by upstream Interface, and judge whether described data are the data of current pending business, are being judged as under the situation that is, revise the precedence information of described vpn label, otherwise abandon described data.
3. method according to claim 1 is characterized in that, it is one of following that the operation of revising the precedence information of described vpn label comprises:
Demand according to service provider is made amendment;
Precedence information according to described outer layer label is made amendment.
4. method according to claim 3 is characterized in that, the described modification of carrying out according to the precedence information of described outer layer label comprises:
With the precedence information of described outer layer label precedence information as described vpn label.
5. method according to claim 1 is characterized in that, after the described outer layer label of removing described data, further comprises:
The described data of removing described outer layer label are carried out descending transmission.
6. a downlink data inking device is used to dispose the data that comprise vpn label and outer layer label, it is characterized in that, described device comprises:
Administration module is used to revise the precedence information of described vpn label;
Processing module is used to remove the described outer layer label from the described data of described administration module;
Wherein, described administration module has from loop fuction, and need be by the data forwarding that will revise vpn label priority from loop fuction on it to described processing module.
7. device according to claim 6 is characterized in that described administration module is used for revising according to the precedence information of the demand of service provider or described outer layer label the precedence information of described vpn label.
8. device according to claim 6 is characterized in that, described device also comprises:
Judge module is used to judge whether the described data that receive by upstream Interface are the data of current pending business;
Discard module is used to abandon data;
Forwarding module, the judged result that is used at described judge module is that described data are under the data conditions of current pending business, with described data forwarding to described administration module, otherwise, with described data forwarding to described discard module.
9. device according to claim 6 is characterized in that, described device also comprises:
Sending module is used for the described data after the described processing module processing are carried out descending transmission.
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| CN102123095B (en) * | 2011-03-10 | 2015-05-20 | 中兴通讯股份有限公司 | Data forwarding control method and device |
| CN105872861A (en) * | 2016-05-30 | 2016-08-17 | 河南昊方通信工程技术有限公司 | Program control exchanger self-loop method |
| CN109660438A (en) * | 2018-12-07 | 2019-04-19 | 北京卫星信息工程研究所 | A kind of ground system of satellite communication |
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| CN1312631A (en) * | 2000-03-02 | 2001-09-12 | 阿尔卡塔尔互联网运行公司 | Privileged reprojection of data communication exchanger |
| CN1832443A (en) * | 2005-03-08 | 2006-09-13 | 杭州华为三康技术有限公司 | Method for reducing VPN network arranging |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312631A (en) * | 2000-03-02 | 2001-09-12 | 阿尔卡塔尔互联网运行公司 | Privileged reprojection of data communication exchanger |
| CN1832443A (en) * | 2005-03-08 | 2006-09-13 | 杭州华为三康技术有限公司 | Method for reducing VPN network arranging |
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Effective date of registration: 20190203 Address after: Delaware Patentee after: Open Invention Network Co., Ltd. Address before: No. 55, Nanshan District science and technology road, Nanshan District, Shenzhen, Guangdong Patentee before: ZTE Corporation |