CN102291297B - Carry the implementation method and device of the MPLS network differential service of vpn service - Google Patents
Carry the implementation method and device of the MPLS network differential service of vpn service Download PDFInfo
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- CN102291297B CN102291297B CN201110223775.1A CN201110223775A CN102291297B CN 102291297 B CN102291297 B CN 102291297B CN 201110223775 A CN201110223775 A CN 201110223775A CN 102291297 B CN102291297 B CN 102291297B
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Abstract
Present invention is disclosed a kind of implementation method for the MPLS network differential service for carrying vpn service, including：Judge the DiffServ of current tunnel；The label priority of current tunnel is obtained according to the DiffServ.Present invention also offers corresponding device.The implementation method and device of a kind of MPLS network differential service for carrying vpn service that the present invention is provided so that the priority of tunnel label can selectively define the grade of service of this layer.
Description
Technical field
The present invention relates to the communications field, a kind of reality for the MPLS network differential service for carrying vpn service is related specifically to
Existing method and apparatus.
Background technology
VPN based on MPLS (Multi-Protocol Label Switching, multiprotocol label switching) is exactly to pass through
The different branches of private network are tied by LSP, form a unified network.In PE (Provider Edge, edge road
By device) node, when VPN user enters MPLS traffic engineering tunnels, it is necessary to give user's message press-in MPLS label, comprising VPN label and
Tunnel label, now needs to operate label E XP domains.MPLS label be by 20bit label value, 3bit EXP domains,
1bit stack bottom mark and 8bit TTL are constituted, and wherein 3bit EXP is generally used for recording the information of label priority.
RFC 3270 describes the Three models of MPLS network DiffServ (differential service) priority flag：Uniform
Pattern, Pipe patterns and Short pipe patterns.Wherein Uniform pattern definitions inherit user's report for the message priority of forwarding
Literary priority, Pipe patterns and Short Pipe patterns are then supported by configuring specified message priority.
Reference picture 1, the step of prior art obtains the tunnel label priority of carrying vpn service is as follows：
Step S1001, inspection receive the MPLS DiffServs configured under the affiliated VPN instance of message；
If what is configured under step S1002, VPN instance is Uniform patterns, jump procedure S1003, if not
Uniform patterns, then may determine that configuration is one kind in Pipe patterns or Short Pipe patterns, performs step
S1004；
Step S1003, the definition according to Uniform patterns, obtain priority of the message in device interior, by the priority
3bit value is obtained according to certain rule, using the value as vpn service label priority, EXP domains are filled.
Step S1004, the definition according to Pipe patterns and Short Pipe patterns, obtain VPN instance Pipe patterns or
The priority that Short Pipe patterns are specified fills the EXP domains of service label as vpn service label priority.
Step S1005, tunnel label priority inheritance vpn service label priority.
From above-mentioned steps, existing standard is carried on to vpn service on MPLS TE networks, without clearly differentiation VPN industry
The operation of label priority of being engaged in and tunnel label priority, it is simply simple by vpn service label priority inheritance to tunnel mark
Sign in priority, and abandoned the Three models for the defined differential services of MPLS DiffServ, it is impossible to provide flexible
QoS guarantee.
The content of the invention
The main object of the present invention is the implementation method and dress for providing a kind of MPLS network differential service for carrying vpn service
Put so that the priority of tunnel label can selectively define the grade of service of this layer.
The present invention proposes a kind of implementation method for the MPLS network differential service for carrying vpn service, including：
Judge the DiffServ of current tunnel；
The label priority of current tunnel is obtained according to the DiffServ.
Preferably, the label priority that current tunnel is obtained according to DiffServ, including：
During the non-Uniform patterns of DiffServ, according to label priority of the specified priority as current tunnel；
When DiffServ is Uniform patterns, carried according to the label priority or current tunnel in last layer tunnel
The label priority of vpn service obtain the label priority of current tunnel.
Preferably, when the DiffServ is Uniform patterns, according to the label priority in last layer tunnel or
The label priority of vpn service obtains the label priority of current tunnel, including：
When there is last layer tunnel, according to the default first rule, worked as by the label priority in last layer tunnel
The label priority in preceding tunnel；
When in the absence of last layer tunnel, according to default Second Rule, the label of the vpn service carried by current tunnel
Priority obtains the label priority of current tunnel.
Preferably, first rule and Second Rule are hash algorithm.
Preferably, perform it is described judge the DiffServ of current tunnel before, in addition to：
Obtain the label priority of the vpn service of current tunnel carrying.
The present invention also proposes a kind of device of realizing of MPLS network differential service for carrying vpn service, including：
Judge module, the DiffServ for judging current tunnel；
Tunnel label priority acquisition module, the label for obtaining current tunnel according to the DiffServ is preferential
Level.
Preferably, the tunnel label priority acquisition module includes：
Non- Uniform pattern acquirings unit, during Uniform patterns non-for DiffServ, according to specified preferential
Level as current tunnel label priority；
Uniform pattern acquiring units, during for DiffServ for Uniform patterns, according to last layer tunnel
Label priority or the label priority of the vpn service of current tunnel carrying obtain the label priority of current tunnel.
Preferably, the Uniform pattern acquirings unit includes：
First regular subelement, for when there is last layer tunnel, according to the default first rule, by last layer tunnel
Label priority obtain the label priority of current tunnel；
Second Rule subelement, for when in the absence of last layer tunnel, according to default Second Rule, by current tunnel
The label priority of the vpn service of carrying obtains the label priority of current tunnel.
Preferably, first rule and Second Rule are hash algorithm.
Preferably, described device also includes：
VPN label priority acquisition module, the label priority of the vpn service for obtaining current tunnel carrying.
The implementation method and device of a kind of MPLS network differential service for carrying vpn service proposed by the present invention, by VPN industry
The differential service of business and the differential service in the tunnel of carrying vpn service combine so that the priority of tunnel label can have
The grade of service for defining this layer of selection, without relying on vpn service label priority.Present invention also offers a kind of tunnel simultaneously
The differential service mode of stratification under nested environment.The present invention has filled up the blank of this portion of techniques, to MPLS VPNs
There is provided more reliable, more flexible QoS guarantee.
Brief description of the drawings
Fig. 1 is the acquisition methods of the MPLS network tunnel label priority of the carrying vpn service of prior art；
Fig. 2 illustrates for the flow of the embodiment of implementation method one of the MPLS network differential service of present invention carrying vpn service
Figure；
Fig. 3 is vpn service mark in the embodiment of implementation method one of the MPLS network differential service of present invention carrying vpn service
Sign the schematic flow sheet that priority is obtained；
Fig. 4 is tunnel label in the embodiment of implementation method one of the MPLS network differential service of present invention carrying vpn service
The schematic flow sheet that priority is obtained；
Fig. 5 improves tunnel mark in embodiment for the implementation method of the MPLS network differential service of present invention carrying vpn service
Sign the schematic flow sheet that priority is obtained；
Fig. 6 carries the structural representation for realizing the embodiment of device one of the MPLS network differential service of vpn service for the present invention
Figure；
Fig. 7 realizes tunnel label in the embodiment of device one for the MPLS network differential service of present invention carrying vpn service
The structural representation of priority acquisition module；
Fig. 8 realizes Uniform moulds in the embodiment of device one for the MPLS network differential service of present invention carrying vpn service
The structural representation of formula acquiring unit.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Reference picture 2, proposes the embodiment of implementation method one of the MPLS network differential service of present invention carrying vpn service, bag
Include：
Step S101, the label priority for obtaining the vpn service that current tunnel is carried, specific steps reference picture 3, including：
Step S1011, inspection receive the MPLS DiffServs configured under the affiliated VPN instance of message；
If what is configured under step S1012, VPN instance is Uniform patterns, jump procedure S1013, if not
Uniform patterns, then may determine that configuration is one kind in Pipe patterns or Short Pipe patterns, performs step
S1014；
Step S1013, the definition according to Uniform patterns, obtain priority of the message in device interior, by the priority
3bit value is obtained according to certain rule, using the value as vpn service label priority, EXP domains are filled.Wherein, obtain
Take message to have a variety of in the mode of the priority of device interior, can be that configuration is specified or reflected according to certain
Rule is penetrated, the present embodiment is not construed as limiting to this；
Step S1014, the definition according to Pipe patterns and Short Pipe patterns, obtain VPN instance Pipe patterns or
The priority that Short Pipe patterns are specified fills the EXP domains of service label as vpn service label priority.Wherein, Pipe
The priority that pattern or Short Pipe patterns are specified, can be according to network need in concrete configuration by network configuration personnel
Ask and set the priority specified.Due to preferential for VPN label in entry PE node Pipe patterns and Short Pipe patterns
Level processing method is consistent, therefore the both of which can be classified as a class and be operated herein.
Step S102, the DiffServ for judging current tunnel；
Step S103, the label priority according to DiffServ acquisition current tunnel.
Reference picture 4 is embodied in step S102 and S103, including：
Tunnel bound in step S1031, inquiry VPN instance, checks the MPLS DiffServs configured under the tunnel；
Step S1032, the DiffServ for judging tunnel, are Uniform patterns, then jump procedure S1033, otherwise table
The DiffServ for showing the tunnel is Pipe patterns or Short Pipe patterns, performs step S1044；
Step S1033, the definition according to Uniform patterns, obtain the vpn service label priority calculated,
Tunnel label priority is obtained according to default Second Rule (such as hash algorithm) with the value, the EXP domains of tunnel label are filled simultaneously
Terminate flow；
Step S1034, the definition according to Pipe patterns and Short Pipe patterns, obtain current tunnel under Pipe patterns or
The priority that person's Short Pipe patterns are specified fills the EXP domains of tunnel label as tunnel label priority.Wherein, Pipe
The priority that pattern or Short Pipe patterns are specified, can be according to network need in concrete configuration by network configuration personnel
Ask and set the priority specified.Due to preferential for VPN label in entry PE node Pipe patterns and Short Pipe patterns
Level processing method is consistent, therefore the both of which can be classified as a class and be operated herein.
In the present embodiment, the differential service of the differential service of vpn service and the tunnel of carrying vpn service is combined,
The priority of tunnel label is allowd selectively to define the grade of service of this layer, without relying on vpn service label priority.
The present invention has filled up the blank of this portion of techniques, and more reliable, more flexible QoS guarantee is provided to MPLS VPNs.
Further, the improvement embodiment of above-described embodiment is proposed, it is nested that the method for above-described embodiment is expanded into tunnel
Network environment, in the tunnel differential service of each nested tunnel aspect implementation level, as shown in figure 5, its specific steps
Including：
Step S1041, inspection receive the MPLS DiffServs configured under the affiliated VPN instance of message；
If what is configured under step S1042, VPN instance is Uniform patterns, jump procedure S1043, if not
Uniform patterns, then may determine that configuration is one kind in Pipe patterns or Short Pipe patterns, performs step
S1044；
Step S1043, the definition according to Uniform patterns, obtain priority of the message in device interior, by the priority
3bit value is obtained according to certain rule, using the value as vpn service label priority, EXP domains are filled, and jump to
Step S1045.Wherein, obtaining message can have a variety of in the mode of the priority of device interior, can be that configuration is specified, also may be used
Being obtained according to certain mapping ruler, the present embodiment is not construed as limiting to this；
Step S1044, the definition according to Pipe patterns and Short Pipe patterns, obtain VPN instance Pipe patterns or
The priority that Short Pipe patterns are specified fills the EXP domains of service label as vpn service label priority.Wherein, Pipe
The priority that pattern or Short Pipe patterns are specified, can be according to network need in concrete configuration by network configuration personnel
Ask and set the priority specified.Due to preferential for VPN label in entry PE node Pipe patterns and Short Pipe patterns
Level processing method is consistent, therefore the both of which can be classified as a class and be operated herein.
Tunnel interface bound in step S1045, acquisition VPN instance；
Step S1046, the DiffServ for judging current tunnel, are Uniform patterns, then jump procedure S10481,
Otherwise the DiffServ for then representing the tunnel is Pipe patterns or Short Pipe patterns, performs step S1047；
Step S1047, the definition according to Pipe patterns and Short Pipe patterns, obtain current tunnel under Pipe patterns or
The priority that person's Short Pipe patterns are specified fills the EXP domains of tunnel label, jump procedure as tunnel label priority
S1049；
Step S10481：Whether the upper interface for judging current tunnel interface is tunnel interface, is to perform step
S10482：This layer of tunnel label by last layer tunnel label priority is obtained according to default first regular (such as hash algorithm) excellent
First level, otherwise performs step S10483 and shows that last layer interface is VPN instance interface, then according to default Second Rule by VPN
Service label priority obtains this layer of tunnel label priority；
Whether step S1049, the next layer interface for judging current tunnel are tunnel interfaces, if it is jump procedure
S1045, otherwise terminates flow.
In summary, this improvement embodiment divides the differential service of tunnel and vpn service on the PE of MPLS TE networks
Open, realize the differential service of vpn service and the differential service of tunnel aspect, while the present invention is extended into tunnel nesting
In network environment, to ensure between MPLS traffic engineering tunnels PE for the end-to-end QoS that VPN flows provide more flexibility and reliability.
Reference picture 6, propose the MPLS network differential service of the invention for carrying vpn service realizes the embodiment of device one, bag
Include：
Judge module 10, the DiffServ for judging current tunnel；
Tunnel label priority acquisition module 20, the label for obtaining current tunnel according to the DiffServ is excellent
First level；
VPN label priority acquisition module 30, the label priority of the vpn service for obtaining current tunnel carrying.
Reference picture 7, tunnel label priority acquisition module 20 further may include：
Non- Uniform pattern acquirings unit 21, during Uniform patterns non-for DiffServ, according to specified excellent
First level as current tunnel label priority；
Uniform pattern acquirings unit 22, during for DiffServ for Uniform patterns, according to last layer tunnel
Label priority or the label priority of vpn service of current tunnel carrying obtain the label priority of current tunnel.
Reference picture 8, Uniform pattern acquirings unit 22 further may include：
First regular subelement 221, for when there is last layer tunnel, according to the default first rule, by last layer
The label priority in tunnel obtains the label priority of current tunnel；
Second Rule subelement 222, for when in the absence of last layer tunnel, according to default Second Rule, by current
The label priority of the vpn service of tunnel carrying obtains the label priority of current tunnel.
The following detailed description of the operation principle of the device of the present embodiment：
VPN label priority acquisition module 30 checks the MPLS differential service moulds for receiving and being configured under the affiliated VPN instance of message
Formula.If what is configured under VPN instance is Uniform patterns, according to the definition of Uniform patterns, message is obtained in equipment
The priority in portion, the priority is obtained according to certain rule 3bit value, preferential using the value as vpn service label
Level, filling EXP domains.Wherein, obtaining message can have a variety of in the mode of the priority of device interior, can be that configuration is specified,
Can also be that, according to certain mapping ruler acquisition, the present embodiment is not construed as limiting to this.
If not Uniform patterns, then may determine that configuration is Pipe patterns or Short Pipe patterns
One kind, then according to the definition of Pipe patterns and Short Pipe patterns, obtain VPN instance Pipe patterns or Short Pipe moulds
The priority that formula is specified fills the EXP domains of service label as vpn service label priority.Wherein, Pipe patterns or
The priority that Short Pipe patterns are specified, can be should according to network demand setting by network configuration personnel in concrete configuration
The priority specified.Due in entry PE node Pipe patterns and Short Pipe patterns for VPN label priority processing side
Method is consistent, therefore the both of which can be classified as a class and be handled herein.
Tunnel bound in the inquiry VPN instance of judge module 10, checks the MPLS DiffServs configured under the tunnel,
Judge the DiffServ in tunnel.
DiffServ such as current tunnel is Uniform patterns, then in tunnel label priority acquisition module 20
Uniform pattern acquirings unit 22 obtains the vpn service label calculated preferential according to the definition of Uniform patterns
Level, tunnel label priority is obtained with the value according to default Second Rule (such as hash algorithm), fills the EXP of tunnel label
Domain.
DiffServ such as current tunnel is non-Uniform patterns, and the DiffServ for representing the tunnel is
Pipe patterns or Short Pipe patterns, then non-Uniform pattern acquirings unit 21 is according to Pipe patterns and Short Pipe
The definition of pattern, obtains the priority that Pipe patterns or Short Pipe patterns are specified under current tunnel excellent as tunnel label
First level, fills the EXP domains of tunnel label.Wherein, the priority that Pipe patterns or Short Pipe patterns are specified, can be
The priority specified is set according to network demand by network configuration personnel during concrete configuration.Due in entry PE node Pipe moulds
Formula is consistent for VPN label priority processing method with Short Pipe patterns, therefore the both of which can be classified as one herein
Class is operated.
In the present embodiment, the differential service of the differential service of vpn service and the tunnel of carrying vpn service is combined,
The priority of tunnel label is allowd selectively to define the grade of service of this layer, without relying on vpn service label priority.
The present invention has filled up the blank of this portion of techniques, and more reliable, more flexible QoS guarantee is provided to MPLS VPNs.
Further, the improvement embodiment of above-described embodiment is proposed, it is nested that the device of above-described embodiment is applied into tunnel
Network environment, in the tunnel differential service of each nested tunnel aspect implementation level, its operation principle is：
VPN label priority acquisition module 30 checks the MPLS differential service moulds for receiving and being configured under the affiliated VPN instance of message
Formula.If what is configured under VPN instance is Uniform patterns, according to the definition of Uniform patterns, message is obtained in equipment
The priority in portion, the priority is obtained according to certain rule 3bit value, preferential using the value as vpn service label
Level, filling EXP domains.Wherein, obtaining message can have a variety of in the mode of the priority of device interior, can be that configuration is specified,
Can also be that, according to certain mapping ruler acquisition, the present embodiment is not construed as limiting to this.
If not Uniform patterns, then may determine that configuration is Pipe patterns or Short Pipe patterns
One kind, then according to the definition of Pipe patterns and Short Pipe patterns, obtain VPN instance Pipe patterns or Short Pipe moulds
The priority that formula is specified fills the EXP domains of service label as vpn service label priority.Wherein, Pipe patterns or
The priority that Short Pipe patterns are specified, can be should according to network demand setting by network configuration personnel in concrete configuration
The priority specified.Due in entry PE node Pipe patterns and Short Pipe patterns for VPN label priority processing side
Method is consistent, therefore the both of which can be classified as a class and be handled herein.
Judge module 10 obtains the tunnel interface bound in VPN instance, and judges the DiffServ of current tunnel.
DiffServ such as current tunnel is Uniform patterns, then continues to judge that upper the one of current tunnel interface connects
Whether mouth is tunnel interface, is that the first regular subelement 221 of then Uniform pattern acquirings unit 22 is advised according to default first
Then (such as hash algorithm) obtains this layer of tunnel label priority by last layer tunnel label priority, otherwise shows last layer interface
For VPN instance interface, then Second Rule subelement 222 according to default Second Rule (such as hash algorithm) by vpn service label
Priority obtains this layer of tunnel label priority.
DiffServ such as current tunnel is non-Uniform patterns, and the DiffServ for representing the tunnel is
Pipe patterns or Short Pipe patterns, then non-Uniform pattern acquirings unit 21 is according to Pipe patterns and Short Pipe
The definition of pattern, obtains the priority that Pipe patterns or Short Pipe patterns are specified under current tunnel excellent as tunnel label
First level, fills the EXP domains of tunnel label.
Whether the next layer interface for judging current tunnel is tunnel interface, if it is returns and is obtained down by judge module 10
One tunnel interface, and judge the DiffServ in next tunnel and repeat above-mentioned according to DiffServ acquisition tunnel
The process of label priority.
In summary, this improvement embodiment divides the differential service of tunnel and vpn service on the PE of MPLS TE networks
Open, realize the differential service of vpn service and the differential service of tunnel aspect, while the present invention is extended into tunnel nesting
In network environment, to ensure between MPLS traffic engineering tunnels PE for the end-to-end QoS that VPN flows provide more flexibility and reliability.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, be included within the scope of the present invention.
Claims (8)
1. a kind of implementation method for the MPLS network differential service for carrying vpn service, it is characterised in that including：
Judge the DiffServ of current tunnel；
The label priority of current tunnel is obtained according to the DiffServ；
The label priority that current tunnel is obtained according to DiffServ, including：
When DiffServ is non-Uniform patterns, according to label priority of the specified priority as current tunnel；
When DiffServ is Uniform patterns, the VPN carried according to the label priority or current tunnel in last layer tunnel
The label priority of business obtains the label priority of current tunnel.
2. the method as described in claim 1, it is characterised in that when the DiffServ is Uniform patterns, according to upper
The label priority in one layer of tunnel or the label priority of vpn service obtain the label priority of current tunnel, including：
When there is last layer tunnel, according to the default first rule, current tunnel is obtained by the label priority in last layer tunnel
The label priority in road；
When in the absence of last layer tunnel, according to default Second Rule, the label of the vpn service carried by current tunnel is preferential
Level obtains the label priority of current tunnel.
3. method as claimed in claim 2, it is characterised in that first rule and Second Rule are hash algorithm.
4. method as claimed any one in claims 1 to 3, it is characterised in that performing the difference for judging current tunnel
Divide before service mode, in addition to：
Obtain the label priority of the vpn service of current tunnel carrying.
5. a kind of MPLS network differential service for carrying vpn service realizes device, it is characterised in that including：
Judge module, the DiffServ for judging current tunnel；
Tunnel label priority acquisition module, the label priority for obtaining current tunnel according to the DiffServ；
The tunnel label priority acquisition module includes：
Non- Uniform pattern acquirings unit, during for DiffServ for non-Uniform patterns, according to specified priority
It is used as the label priority of current tunnel；
Uniform pattern acquiring units, during for DiffServ for Uniform patterns, according to the label in last layer tunnel
Priority or the label priority of the vpn service of current tunnel carrying obtain the label priority of current tunnel.
6. device as claimed in claim 5, it is characterised in that the Uniform pattern acquirings unit includes：
First regular subelement, for when there is last layer tunnel, according to the default first rule, the mark by last layer tunnel
Label priority obtains the label priority of current tunnel；
Second Rule subelement, for when in the absence of last layer tunnel, according to default Second Rule, being carried by current tunnel
The label priority of vpn service obtain the label priority of current tunnel.
7. device as claimed in claim 6, it is characterised in that first rule and Second Rule are hash algorithm.
8. the device as any one of claim 5 to 7, it is characterised in that also include：
VPN label priority acquisition module, the label priority of the vpn service for obtaining current tunnel carrying.
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| CN110830373B (en) * | 2018-08-14 | 2022-02-11 | 上海层峰网络科技有限公司 | Method and device for realizing QOS service quality differentiation of service in SDN network |
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| CN1859294A (en) * | 2005-12-30 | 2006-11-08 | 华为技术有限公司 | Method for providing QoS service for virtual special net user |
| CN101163084A (en) * | 2007-11-13 | 2008-04-16 | 华为技术有限公司 | Classification based tunnel selecting method and apparatus |
| CN101729422A (en) * | 2009-12-09 | 2010-06-09 | 杭州华三通信技术有限公司 | Method and device for realizing QoS (Quality of Service) by utilizing BGP (Border Gateway Protocol) |
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| US20050088977A1 (en) * | 2000-12-14 | 2005-04-28 | Nortel Networks Limited | Dynamic virtual private network (VPN) tunnel quality of service (QoS) treatment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1859294A (en) * | 2005-12-30 | 2006-11-08 | 华为技术有限公司 | Method for providing QoS service for virtual special net user |
| CN101163084A (en) * | 2007-11-13 | 2008-04-16 | 华为技术有限公司 | Classification based tunnel selecting method and apparatus |
| CN101729422A (en) * | 2009-12-09 | 2010-06-09 | 杭州华三通信技术有限公司 | Method and device for realizing QoS (Quality of Service) by utilizing BGP (Border Gateway Protocol) |
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