CN106331192A - Network protocol IP address allocation method and device - Google Patents
Network protocol IP address allocation method and device Download PDFInfo
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- CN106331192A CN106331192A CN201510348662.2A CN201510348662A CN106331192A CN 106331192 A CN106331192 A CN 106331192A CN 201510348662 A CN201510348662 A CN 201510348662A CN 106331192 A CN106331192 A CN 106331192A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
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Abstract
The invention discloses an IP address allocation method and device. The method comprises the steps that the original address pool of a network access server NAS is divided into multiple small-granularity address fields in advance, and the divided address field information is saved in an address field state server; and if no local applied address field exists or the local applied address field exists while the address field has no idle IP address in application for an IP address, a new address field is applied from the address field state server, and IP address allocation is performed for the NAS in the new address field. With application of the technical scheme, the original network is compatible, and performance reduction and interruption influence in centralized IP allocation can also be avoided so that the utilization rate of the IP address resource can be enhanced.
Description
Technical field
The present invention relates to computer network field, particularly relate to a kind of procotol (Internet Protocol,
Referred to as IP) address distribution method and device.
Background technology
In fixed network and mobile network user's access procedure, the problem all referring to IP address distribution.Mesh
Front by network access server (Network Access Server, referred to as NAS) side configuration address
The mode in pond realizes the distribution of IP address.Fig. 1 is the application scenarios of many NAS distribution address in prior art
Schematic diagram, as it is shown in figure 1, a network includes the address pool that multiple NAS, each NAS configure
Separate, it is impossible to have overlap.Four NAS in Fig. 1, its address field of both the above exhausts, below
Two then a lot of idle.Another time period may be again contrary result, i.e. both the above is idle, below two
Individual exhaust.Therefore, such deployment way easily causes the unbalanced of resource, such as, at each NAS
When the address pool of division is too small, then peak period is not enough, excessive, wastes.Thus each NAS
Quite a few address capability will be reserved.Additionally, prior art there is also a NAS address pool money
Source is nervous, the situation that another NAS address pool is the most idle.Therefore it is badly in need of at present solving the distribution of IP address pool
Problem.
Summary of the invention
In view of causing the problem of maldistribution of the resources and waste when prior art is allocated in advance absolute address pond,
Propose the present invention to provide a kind of IP address distribution method overcoming the problems referred to above and device.
The present invention provides a kind of procotol IP address distribution method, including: in advance by network insertion service
The original address pool of device NAS is divided into the address field of multiple small grain size, and the address field information after dividing
It is saved in address field state server；When carrying out IP application IP addresses, apply for if this locality does not exist
Address field, or local there is the address field applied for but this address field do not have free IP addresses, NAS
Then to one new address field of address field state server application, from new address field, carry out IP address for NAS
Distribution.
Present invention also offers a kind of procotol IP address distributing device, specifically include: divide module,
For in advance its original address pool being divided into the address field of multiple small grain size, and the address field after dividing
Information is saved in address field state server；Distribution module, is used for when carrying out IP application IP addresses, if
The local address field applied for that do not exists, or local there is the address field applied for but this address field does not has
Available free IP address, then, to one new address field of address field state server application, from new address field be
NAS carries out the distribution of IP address.
The present invention has the beneficial effect that:
By original address pool being divided into the address field of multiple small grain size, and by address field state server
Control the use state of address field, when distributing in IP address, send a request message to address field status service
Device carries out address field application, solves and causes resource distribution not when allocating absolute address pond in prior art in advance
Problem that is equal and that waste, both still can dynamically have been distributed IP, can share whole IP address by many NAS again by NAS
Pond.When turn avoid centralised allocation IP while compatible former network, performance reduces and interrupts impact, carries
The high utilization rate of IP address resource.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technology of the present invention
Means, and can being practiced according to the content of description, and in order to allow above and other objects of the present invention,
Feature and advantage can become apparent, below especially exemplified by the detailed description of the invention of the present invention.
Accompanying drawing explanation
By reading the detailed description of hereafter preferred implementation, various other advantage and benefit for ability
Territory those of ordinary skill will be clear from understanding.Accompanying drawing is only used for illustrating the purpose of preferred implementation, and also
It is not considered as limitation of the present invention.And in whole accompanying drawing, it is denoted by the same reference numerals identical
Parts.In the accompanying drawings:
Fig. 1 is the schematic diagram of the application scenarios of many NAS distribution address in prior art；
Fig. 2 is the flow chart of the IP address distribution method of the embodiment of the present invention；
Fig. 3 is that the IP address field of the embodiment of the present invention disposes schematic diagram；
Fig. 4 is the request of IP address field and the signaling process figure of response of the embodiment of the present invention；
Fig. 5 is the schematic diagram of the type of message of the RFC2882 definition of the embodiment of the present invention；
Fig. 6 is the schematic diagram of the Framed-Route attribute definition of the embodiment of the present invention；
Fig. 7 be the embodiment of the present invention carry out ground by Resource-Query-Request/Reponse message
The signaling process figure of location section application；
Fig. 8 is the structural representation of the IP address distributing device of the embodiment of the present invention.
Detailed description of the invention
It is more fully described the exemplary embodiment of the disclosure below with reference to accompanying drawings.Although accompanying drawing shows
The exemplary embodiment of the disclosure, it being understood, however, that may be realized in various forms the disclosure and should be by
Embodiments set forth here is limited.On the contrary, it is provided that these embodiments are able to be best understood from this
Open, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.
In order to cause maldistribution of the resources and waste when solving and prior art is allocated in advance absolute address pond
Problem, the invention provides a kind of IP address distribution method and device, and the network element being mainly concerned with includes net
Network access server (Network Access Server, referred to as NAS) and address field state server,
The technical scheme of the embodiment of the present invention is point-to-point protocol (Point to Point Protocol, referred to as PPP)
The useful supplement of the agreement flow processs such as/IP control protocol (IP Control Protocol, referred to as IPCP).Tool
Body ground, all addresses that will be responsible for management are divided into multiple segment, an address field state server safeguard
It distributes state；Check in the address field that this locality has been applied for when nas server needs to distribute address and whether wrap
Containing idle IP, in the presence of the most directly distribute；Then Shen is carried out to server by sending request message in the presence of not
Address field that please be new；NAS and address field state server all can carry out IP address by sending release message
The release of section.The technical scheme of the embodiment of the present invention is respectively fixedly divided in pond, location in advance for solving many NAS
The IP distribution that formula formula is brought is uneven and the wasting of resources has good effect.Below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to the present invention.Only should be appreciated that specific embodiment described herein
In order to explain the present invention, do not limit the present invention.
Embodiment of the method
According to embodiments of the invention, it is provided that a kind of IP address distribution method, Fig. 2 is that the present invention implements
The flow chart of the IP address distribution method of example, as in figure 2 it is shown, IP address according to embodiments of the present invention is divided
Method of completing the square includes processing as follows:
Step 201, is divided into original for NAS address pool the address field of multiple small grain size in advance, and will draw
Address field information after Fen is saved in address field state server；It should be noted that NAS includes but does not limits
In PDSN/GGSN/PDN-GW.It is to say, in step 201, as it is shown on figure 3, need each
The original big address pool of NAS is divided into the address field of multiple small grain size, and moves to ground by the distribution using authority
Location section state server.Such as, the NAS1 in Fig. 3 includes three address fields, the state of each address field
Be one of them address field without the free time, another two address field is available free.
Step 202, network access server is when carrying out IP application IP addresses, if this locality does not exist Shen
Address field please, or local there is the address field applied for but this address field does not has free IP addresses,
Then to one new address field of address field state server application, from new address field, carry out IP address for NAS
Distribution.
Above-mentioned steps 201 and step 202 can be performed associative operation by NAS.
In embodiments of the present invention, if this locality exists in the address field this address field applied for containing available free
IP address, then NAS directly carries out the distribution of IP address for NAS from this address field.
It is to say, in embodiments of the present invention, when NAS has the demand of distribution address pool, first check
Whether local have the address field applied for and containing idle IP, have then by the flow process of original dynamic distribution IP from this
Address field distributes an address.Without the most as shown in Figure 4, send the message (IP of applied address section
Address field is asked) to address field state server, get new address by IP address field response message
Duan Hou, therefrom distributes new address.
Additionally, after user discharges IP address, if all of IP address is the most idle in whole address field,
Then NAS discharges this address field Notify Address section state server.Further, address field state is being received
After the release address field request that server sends, NAS discharges corresponding user conversation and IP address.The most just
Being to say, NAS is after user offline release address, idle if there is whole little address field, then can send out
Give the release flow process of this address field.Address state server needs because of management, it is also possible to actively sends release and refers to
Determining the request of address field, NAS needs to discharge relative users session and IP after receipt.
NAS periodically sends address field service condition heartbeat message to address field state server；Address field shape
State server does not the most receive address field service condition heartbeat message, then by corresponding address
Section is set to the free time and can distribute state.It is to say, NAS needs periodically to send the service condition of address field
Heartbeat message, to ensure the ageing of address field.Address field state server updates after receiving heartbeat message
The time of address field；If not receiving heartbeat message for a long time, discharging this address field, being set to the free time can distribute
State.
It should be noted that IP application IP addresses message definition and address field state server all can be according to network rings
Border and deployment scenario realize flexibly.It is not limited to TCP/UDP, is also not necessarily limited to standard agreement or self-defined
Message format.
Below in conjunction with accompanying drawing, the technique scheme of the embodiment of the present invention is described in detail.
When the embodiment of the present invention is implemented, based on the Radius agreement commonly used in existing network, and
The type of message utilizing RFC2882 to define is the embodiment of a kind of Least-cost.Fig. 5 is that the present invention is real
Execute the schematic diagram of type of message of the RFC2882 definition of example, additionally, the embodiment of the present invention use simultaneously by
AAA is as address field state server, it is possible to reduce the change to existing network.
Step 1, comprises NASID/Service-Type and optional in Resource-Query-Request message
APN attribute, wherein Service-Type=0x02 (Framed) represents it is address field request.
Step 2, carries NAS ID (essential), APN (can in Resource-Query-Response message
Choosing) and Service-Type AVP (essential), Framed-Route (essential, carry concrete IP section
Information) license to NAS, and record the distribution state of IP section and NAS ID or APN that IP section is corresponding
(if request message is carried).Wherein, Framed-Route attribute definition is as shown in Figure 6.
Step 3, Resource-Free-Request message comprise in release NASID and optional APN,
Framed-Route attribute.Wherein Framed-Route is address field to be discharged, radius server according to
This address field of NASID or NASID+APN labelling in request is unallocated state, if
Framed-Route does not carries, then radius server discharges what this NASID or NASID+APN found
All address fields.It is optional that Radius sends Resource-Free-Response response message.
Step 4, because of management aspect reason, radius server can actively initiate to discharge the request of address field.
Radius server realizes this purpose by sending Resource-Free-Request message.Message is carried
NASID, APN (if carrying during application), Framed-Route is (if carrying expression release to specify ground
Location section, if not specifying expression to need it to discharge all address fields).NAS can send response immediately.But radius
Server needs etc. just go really to arrange this when receiving the Resource-Free-Request request of NAS transmission
Address field is idle.
Step 5, radius server is to ensure that address field distributes the ageing of state, needs NAS periodically
Send heartbeat message, show to be currently in use which address field.This passes through in the present invention
Resource-Query-Request (Service-Type=0x12 (FramedManagement)) realizes.Radius
Server can update the final report (FR) time of this address field after receiving message, if can not receive report for a long time,
Then discharging this address field resource, state is for distributing.
Fig. 7 be the embodiment of the present invention carry out ground by Resource-Query-Request/Reponse message
The signaling process figure of location section application, as it is shown in fig. 7, with between GGSN (NAS) and AAA
The application of Resource-Query-Request/Reponse message is illustrated, and specifically includes following place
Reason:
Step 1, GGSN has address distribution requirements, and there is not free address section.
GGSN sends Resource-Query-Request, carries:
NASID=" nasid01 ",
APN=" apn01 ",
Service-Type=2 (Framed),
Step 2, AAA (materialization of radius server described previously) selects idle address field, and marks
It is designated as distributing, NASID and APN that record is corresponding.
Step 3, AAA sends Resource-Query-Response, carries:
NASID=" nasid01 ",
APN=" apn01 ",
Framed-Route=" 10.1.18.1-10.1.18.50 "
In sum, by means of the technical scheme of the embodiment of the present invention, by original address pool is divided into
The address field of multiple small grain size, and controlled the use state of address field by address field state server, at IP
During the distribution of address, send a request message to address field state server and carry out address field application, solve existing
The problem causing maldistribution of the resources and waste when allocating absolute address pond in technology in advance, both can be still by NAS
Dynamically distribute IP, whole IP address pool can be shared by many NAS again.Turn avoid while compatible former network
During centralised allocation IP, performance reduces and interrupts impact, improves the utilization rate of IP address resource.
Device embodiment
According to embodiments of the invention, it is provided that a kind of IP address distributing device, it is arranged at network insertion clothes
Business device NAS, Fig. 8 are the structural representations of the IP address distributing device of the embodiment of the present invention, such as Fig. 8 institute
Showing, IP address distributing device according to embodiments of the present invention includes: divide module 80, distribution module 82,
Hereinafter the modules of the embodiment of the present invention is described in detail.
Divide module 80, be used for its original address pool being divided in advance the address field of multiple small grain size, and
Address field information after dividing is saved in address field state server；
Distribution module 82, for when carrying out IP application IP addresses, if this locality does not exist the ground applied for
Location section, or local there is the address field applied for but this address field does not has free IP addresses, then to ground
One new address field of location section state server application, carries out the distribution of IP address for NAS from new address field.
Preferably, above-mentioned distribution module is further used for: there is, if local, the address field this ground applied for
Containing free IP addresses in the section of location, then directly from this address field, carry out the distribution of IP address for NAS.
Preferably, said apparatus farther includes:
First release module, is used for after user discharges IP address, if all of IP in whole address field
Address is the most idle, then discharge this address field Notify Address section state server.
Second release module, for receiving the release address field request that address field state server sends
After, discharge corresponding user conversation and IP address.
Sending module, disappears for periodically sending address field service condition heart beating to address field state server
Breath；Address field state server does not the most receive address field service condition heartbeat message, then
Corresponding address field is set to the free time can distribute state.
The process of embodiment of the present invention modules can be managed according to the description in said method embodiment
Solve, do not repeat them here.
In sum, by means of the technical scheme of the embodiment of the present invention, by original address pool is divided into
The address field of multiple small grain size, and controlled the use state of address field by address field state server, at IP
During the distribution of address, send a request message to address field state server and carry out address field application, solve existing
The problem causing maldistribution of the resources and waste when allocating absolute address pond in technology in advance, both can be still by NAS
Dynamically distribute IP, whole IP address pool can be shared by many NAS again.Turn avoid while compatible former network
During centralised allocation IP, performance reduces and interrupts impact, improves the utilization rate of IP address resource.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Algorithm and display be not intrinsic with any certain computer, virtual system or miscellaneous equipment provided herein
Relevant.Various general-purpose systems can also be used together with based on teaching in this.As described above, structure
Make the structure required by this kind of system to be apparent from.Additionally, the present invention is also not for any certain programmed
Language.It is understood that, it is possible to use various programming languages realize the content of invention described herein, and
The description done language-specific above is the preferred forms in order to disclose the present invention.
In description mentioned herein, illustrate a large amount of detail.It is to be appreciated, however, that this
Bright embodiment can be put into practice in the case of not having these details.In some instances, the most in detail
Known method, structure and technology are shown, in order to do not obscure the understanding of this description.
Similarly, it will be appreciated that in order to simplify the disclosure help to understand in each inventive aspect one or
Multiple, above in the description of the exemplary embodiment of the present invention, each feature of the present invention is sometimes by one
Rise and be grouped in single embodiment, figure or descriptions thereof.But, should be by the method for the disclosure
It is construed to reflect an intention that i.e. the present invention for required protection requires than institute in each claim clearly
The more feature of feature recorded.More precisely, as the following claims reflect, send out
Bright aspect is all features less than single embodiment disclosed above.Therefore, it then follows detailed description of the invention
Claims be thus expressly incorporated in this detailed description of the invention, the conduct of the most each claim itself
The independent embodiment of the present invention.
Those skilled in the art are appreciated that and can carry out the module in the client in embodiment certainly
Change adaptively and they are arranged in one or more clients different from this embodiment.Permissible
Block combiner in embodiment is become a module, and multiple submodule or son can be put them in addition
Unit or sub-component.Except at least some in such feature and/or process or unit excludes each other it
Outward, any combination can be used public in this specification (including adjoint claim, summary and accompanying drawing)
All features of opening and the disclosedest any method or all processes of client or unit carry out group
Close.Unless expressly stated otherwise, public in this specification (including adjoint claim, summary and accompanying drawing)
The each feature opened can be replaced by the alternative features providing identical, equivalent or similar purpose.
Although additionally, it will be appreciated by those of skill in the art that embodiments more described herein include other
Some feature included in embodiment rather than further feature, but the combination meaning of the feature of different embodiment
Taste and is within the scope of the present invention and is formed different embodiments.Such as, in following claim
In book, one of arbitrarily can mode using in any combination of embodiment required for protection.
The all parts embodiment of the present invention can realize with hardware, or with at one or more processor
The software module of upper operation realizes, or realizes with combinations thereof.It will be understood by those of skill in the art that
Microprocessor or digital signal processor (DSP) can be used in practice to realize according to the present invention real
Execute the some or all functions of some or all parts in the client being loaded with sequence network address of example.
The present invention be also implemented as part or all the equipment for performing method as described herein or
Person's device program (such as, computer program and computer program).Such journey realizing the present invention
Sequence can store on a computer-readable medium, or can be to have the form of one or more signal.This
The signal of sample can be downloaded from internet website and obtain, or provides on carrier signal, or with any
Other forms provide.
The present invention will be described rather than limits the invention to it should be noted above-described embodiment, and
And those skilled in the art can design replacement enforcement without departing from the scope of the appended claims
Example.In the claims, any reference marks that should not will be located between bracket is configured to claim
Limit.Word " comprises " and does not excludes the presence of the element or step not arranged in the claims.Before being positioned at element
Word "a" or "an" do not exclude the presence of multiple such element.If the present invention can be by means of including
The hardware of dry different elements and realizing by means of properly programmed computer.If listing equipment for drying
In unit claim, several in these devices can be specifically to be embodied by same hardware branch.
Word first, second and third use do not indicate that any order.These word explanations can be run after fame
Claim.
Claims (10)
1. a procotol IP address distribution method, it is characterised in that including:
In advance original for network access server NAS address pool is divided into the address field of multiple small grain size,
And the address field information after dividing is saved in address field state server；
When carrying out IP application IP addresses, if this locality does not exist the address field applied for, or this locality is deposited
At the address field applied for but this address field do not has free IP addresses, then to described address field status service
One new address field of device application, carries out the distribution of IP address for described NAS from described new address field.
2. the method for claim 1, it is characterised in that described method farther includes: if
Local existence in the address field this address field applied for contains free IP addresses, then NAS is directly from this ground
Described in the Duan Zhongwei of location, NAS carries out the distribution of IP address.
3. the method for claim 1, it is characterised in that described method farther includes: with
Behind release IP address, family, if all of IP address is the most idle in whole address field, then NAS discharges this ground
Location section also notifies described address field state server.
4. the method for claim 1, it is characterised in that described method farther includes: connecing
After receiving the release address field request that described address field state server sends, NAS discharges corresponding user's meeting
Words and IP address.
5. the method for claim 1, it is characterised in that described method farther includes: NAS
Periodically send address field service condition heartbeat message to described address field state server；Described address field shape
State server does not the most receive described address field service condition heartbeat message, then will be corresponding
Address field is set to the free time and can distribute state.
6. a procotol IP address distributing device, it is characterised in that specifically include:
Divide module, be used for its original address pool being divided in advance the address field of multiple small grain size, and will
Address field information after division is saved in address field state server；
Distribution module, for when carrying out IP application IP addresses, if this locality does not exist the address applied for
Section, or local there is the address field applied for but this address field does not has free IP addresses, then to described
One new address field of address field state server application, is network access server from described new address field
NAS carries out the distribution of IP address.
7. device as claimed in claim 6, it is characterised in that described distribution module is further used for:
Exist in the address field this address field applied for containing free IP addresses, then directly from this ground if local
Described in the Duan Zhongwei of location, NAS carries out the distribution of IP address.
8. device as claimed in claim 6, it is characterised in that described device farther includes:
First release module, is used for after user discharges IP address, if all of IP in whole address field
Address is the most idle, then discharge this address field and notify described address field state server.
9. device as claimed in claim 6, it is characterised in that described device farther includes:
Second release module, for asking at the release address field receiving the transmission of described address field state server
After asking, discharge corresponding user conversation and IP address.
10. device as claimed in claim 6, it is characterised in that described device farther includes:
Sending module, for periodically sending address field service condition heart beating to described address field state server
Message；Described address field state server does not the most receive the described address field service condition heart
Jump message, then corresponding address field is set to the free time can distribute state.
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| CN110661894A (en) * | 2018-06-29 | 2020-01-07 | 中兴通讯股份有限公司 | User IP address allocation method, network device and storage medium |
| WO2020038049A1 (en) * | 2018-08-20 | 2020-02-27 | 中兴通讯股份有限公司 | Communication connection method, device, communication device and computer readable storage medium |
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| CN112995349A (en) * | 2019-12-12 | 2021-06-18 | 中兴通讯股份有限公司 | Address management method, server, and computer-readable storage medium |
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