CN105227694B - For realizing the device and method of IPv6 prefix assignments - Google Patents
For realizing the device and method of IPv6 prefix assignments Download PDFInfo
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- CN105227694B CN105227694B CN201510655681.XA CN201510655681A CN105227694B CN 105227694 B CN105227694 B CN 105227694B CN 201510655681 A CN201510655681 A CN 201510655681A CN 105227694 B CN105227694 B CN 105227694B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2101/00—Indexing scheme associated with group H04L61/00
- H04L2101/60—Types of network addresses
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Abstract
The present invention relates to the communications fields, disclose a kind of device and method for realizing IPv6 prefix assignments.Wherein described device includes：Receiver, for receiving RS (Router Solicitation, the router solicitation) message sent by user terminal；Processor, for distributing IPv6 prefixes according to the distribution state of multiple IPv6 prefixes included in the RS messages and the processor for the user terminal, wherein the multiple IPv6 prefixes include single user prefix and multi-user's prefix；And transmitter, for sending distributed IPv6 prefixes to the user terminal.
Description
Technical field
The present invention relates to the communications fields, and in particular, to a kind of device and method for realizing IPv6 prefix assignments.
Background technology
IPv6 (Internet Protocol Version 6) is second generation Internet protocol, currently used for replacing
IPv4 (Internet Protocol Version 4) agreement.The feature of IPv6 agreements itself maximum is that address space significantly expands
Greatly, codified position is equivalent to by 32 Bits Expandings of IPv4 to 128 and extends 296Times.
The addresses IPv6 include three types, are unicast address, multicast address and anycast address respectively.So-called unicast
Location refers to the address that can uniquely determine a certain equipment；So-called multicast address refers to the address for corresponding to multiple devices；It is so-called
Anycast address, refer to corresponding to the address of wherein any one equipment, anycast address can within the scope of given multiple devices
To be interpreted as unicast address in a certain range.
Wherein, the unicast address of IPv6 can be continued with being divided into link local according to the scope of application of address
Location, site-local address, global unicast address etc..Link local address is to act on specific a certain link, is not involved in routing and turns
Hair is commonly used in the neighbor learning of link-local.Link local address is generally started with FE80.Site-local address is currently
Substantially do not have to, primarily to compatible with passing realization holding and exist.Site-local address is addressed for Intra-site, one
As started with FEC0.Global unicast address is the address that can be communicated with external any one host, participates in routing forwarding.
Herein, if subsequent processing does not indicate, the addresses IPv6 each mean global unicast address, corresponding prefix
It refer to the prefix of IPv6 global unicast address.
The addresses IPv6 are being constituted above as IPv4, using network prefix plus host identification.In order to avoid IPv4 prefixes point
The irrationality matched and the serious unevenness for causing address to be distributed, IPv6 address prefixes are usually distribute a regular length 48
IPv6 prefixes, subsequently by user oneself subnet division, the length of subnet prefix is 16.In this way, for arbitrary user,
Prefix acquisition is fair, and total is 48.
Since preceding 48 prefix lengths are usually fixed allocation, user oneself can not determine.Therefore the prefix said herein
Distribution, refers to the assignment problem of rear 16 subnet prefixes.
For current existing prefix assignment scheme, it is broadly divided into following several classes：
(1) in a specific Intra-site, divided by ND (Neighbor Discovery, neighbours have found) agreement
Match.ND agreements are, it is specified that IPv6 carries out two layers of neighbor learning, prefix study, the correlations such as router study in same link-local
The realization method of function.Each host obtains prefix by router, and generates respective global unicast address according to prefix, in turn
With PERCOM peripheral communication.Here there are mainly two types of the modes for obtaining prefix：
Mode 1：Router periodic broadcasting RA (Router Advertisement, router advertisement) message is right to terminal
The broadcast RA messages answered can carry corresponding prefix information, after terminal gets the prefix information, that is, utilize the prefix to generate
Corresponding global unicast address.
Mode 2：After a certain host is associated with router, RS (Router Solicitation, road can be actively sent at this time
Asked by device) message, router is after receiving RS messages, and feedback unicast RA messages are to terminal.It is raw after terminal gets prefix
At global unicast address.
The advantages of this prefix assignment mode is：Prefix assignment is carried out based on IPv6ND agreements, is realized simply, as long as general
It supports IPv6 functions, just can support this prefix assignment mode.It does not need user terminal and provides additional support with server.
Disadvantage：This prefix assignment mode is that the prefix of each terminal distribution is all identical, is unable to reach and utilizes prefix
The purpose that user is identified.
(2) pass through DHCPv6 (Dynamic Host Configuration Protocol for IPv6, for IPv6's
Dynamic host configuration protocol) protocol realization can be that different users distributes when distributing IPv6 prefixes by DHCPv6 for user
Different prefixes.
Principle：User terminal sends prefix application message, DHCPv6 services by being used as client, to DHCPv6 server-sides
Request of the end according to client, makes judgement appropriate, if client request meets current judgement, to user terminal feedback one
A prefix information.
Advantage：Can be that different users distributes different prefixes.It is convenient to distinguish user using prefix.Before this
Sew that user terminal and the interactive means of server-side in distribution method are more rich, client can be interacted with server-side from
Prefix, to prevent server-side from redistributing identical prefix.Finally, which autgmentability is preferable, utilizes relaying technique, Ke Yishi
Existing DHCPv6 server-sides and client no longer the same network segment when prefix assignment function.
Disadvantage：It is relative complex in realization, it needs to support DHCPv6 agreements.This method is not particularly suited for arbitrary terminal, than
Such as using relatively broad window xp, DHCPv6 client functionalities are not just supported.
(3) it is allocated by certain strategy, i.e., by specified certain rule, user is distributed to according to rule generation
Prefix.
Principle：This technology is a kind of combination and extension to method (1) and method (2).By setting certain rule
Then, the distribution object of prefix is determined.User terminal can be divided into several groups according to rule, different component matches different prefixes,
User terminal in group obtains identical prefix.Furthermore it is possible to judge user characteristics, only user's correlated characteristic meets
Demand can be just that user distributes prefix.
Advantage：Prefix assignment mode substantially envisages the feature of user, stronger for the control of user behavior.
Disadvantage：Realize complexity the most, the server-side as prefix assignment needs to judge the feature of user, and needs
Preserve a rule base.
In conclusion in above-mentioned three kinds of allocation plans, scheme (1), which can not be realized, knows user using prefix
Not, scheme (2) needs to rely on specific application terminal to complete prefix assignment, and the implementation method of scheme (3) is too simple.Cause
This, this invention address that realizing that one kind not only not depended on specific application terminal, but also can reach and be known to user using prefix
Other purpose, while realizing easy prefix assignment mode.
Invention content
The object of the present invention is to provide a kind of device and methods for realizing IPv6 prefix assignments, can realize IPv6
Prefix dynamically distributes, and realizes simplicity, and deployment is quick.
To achieve the goals above, the present invention provides a kind of device for realizing IPv6 prefix assignments, which includes：
Receiver, for receiving RS (Router Solicitation, the router solicitation) message sent by user terminal；Processor,
For according to the distribution state of multiple IPv6 prefixes included in the RS messages and the processor come for the user end
End distribution IPv6 prefixes, wherein the multiple IPv6 prefixes include single user prefix and multi-user's prefix；And transmitter, it is used for
Distributed IPv6 prefixes are sent to the user terminal.
Correspondingly, the present invention also provides a kind of method for realizing IPv6 prefix assignments, this method includes：Receive by with
RS (Router Solicitation, router solicitation) message that family terminal is sent；According to the RS messages and multiple IPv6
The distribution state of prefix is distributed IPv6 prefixes for the user terminal, wherein the multiple IPv6 prefixes include single user prefix
With multi-user's prefix；And distributed IPv6 prefixes are sent to the user terminal.
Through the above technical solutions, according to RS messages and multiple IPv6 prefixes (before being divided into single user prefix and multi-user
Sew) distribution state come for user terminal distribute IPv6 prefixes, following advantages may be implemented：(1) prefix assignment side of the invention
Formula can realize to be that different user distributes different prefixes as possible, be separated to user by prefix and behaviour control, reach energy
The purpose that enough user is identified using prefix；(2) prefix assignment mode of the invention is not relying on specific application terminal
And realize, as long as support IPv6 functions, can support prefix assignment mode provided by the present invention, do not need user terminal and
Server provides additional support；(3) prefix assignment mode of the invention can be based on ND agreements or be based on DHCPv6 agreements
It completes prefix assignment, realizes easy, deployment is quick.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is to be used to provide further understanding of the present invention, an and part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 shows the structural schematic diagram of the device provided by the present invention for realizing IPv6 prefix assignments；
Fig. 2 shows the transition diagrams between the distribution state of IPv6 prefixes and each state；
Fig. 3 shows that the present invention realizes the flow diagram of IPv6 prefix assignments；And
Fig. 4 shows the flow diagram of recycling IPv6 prefixes.
Reference sign
10 receiver, 20 processor
30 transmitters
Specific implementation mode
The specific implementation mode of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific implementation mode stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Fig. 1 shows the structural schematic diagram of the device provided by the present invention for realizing IPv6 prefix assignments.Such as Fig. 1 institutes
Show, provided by the present invention for the device of realization IPv6 prefix assignments, which may include：Receiver 10, for receive by
RS (Router Solicitation, router solicitation) message that user terminal is sent；Processor 20, for according to the RS
The distribution state of multiple IPv6 prefixes included in message and the processor is distributed IPv6 prefixes for the user terminal,
Wherein the multiple IPv6 prefixes include single user prefix and multi-user's prefix；And transmitter 30, for whole to the user
End sends distributed IPv6 prefixes.Wherein, single user prefix refers to that can be only assigned to the IPv6 prefixes of single user, is mostly used
Family prefix refers to that can distribute to the IPv6 prefixes of multiple users.
Hereinafter with term " IPv6 prefixes " mentioned hereinbefore and " prefix ", IPv6 global unicast address is each meant
Rear 16 subnet prefixes in prefix.
Fig. 2 shows the transition diagrams between the distribution state of IPv6 prefixes and each state；As shown in Fig. 2, before IPv6
The distribution state sewed can be divided into 3 kinds：(1) unallocated state refers to the state that a prefix is not associated with any user terminal；
(2) can reallocate state, refer to a prefix and be associated with user terminal, but can still continue to distribute to other users' ends
Hold the state being associated, it is clear that the state that can reallocate is effective only for multi-user's prefix；(3) can not reallocate state, refer to
One prefix cannot reallocate to other users, that is, for single user prefix, can not the state of reallocating refer to single user prefix
Through association user terminal, for multi-user's prefix, can not the state of reallocating refer to the associated user terminal number of multi-user's prefix
Having reached it can be with associated maximum number.
With further reference to Fig. 2, arrow 1 indicates, by multi-user's prefix assignment in unallocated state to user terminal, and
User terminal associated by multi-user's prefix, which does not reach maximum, can be associated with number, then the distribution state of multi-user's prefix is not by
Distribution state is changed into the state that can reallocate；Arrow 2 indicates, by multi-user's prefix assignment in the state that can reallocate to user
Terminal, and the user terminal associated by multi-user's prefix reaches maximum can be associated with number, then the distribution state of multi-user's prefix
By can the state of reallocating be changed into the state that can not reallocate；Arrow 3 indicates, before multi-user of the recycling in the state that can not reallocate
Sew, and the user terminal number associated by multi-user's prefix is not zero, then the distribution state of multi-user's prefix by that can not divide again
It is changed into the state that can reallocate with state；Arrow 4 indicates that recycling is in the multi-user's prefix for the state that can reallocate, and the recycling
The user terminal number associated by multi-user's prefix afterwards is zero, then the distribution state of multi-user's prefix is turned by the state that can reallocate
Become unallocated state；Arrow a is indicated, by the single user prefix assignment in unallocated state to client, then the single user
The distribution state of prefix is changed into the state that can not reallocate by unallocated state；Arrow b is indicated, will be in the state that can not reallocate
Single user prefix withdraw, then the distribution state of the single user prefix by can not the state of reallocating be changed into unallocated state.
In practical applications, provided by the present invention for realizing that the device of IPv6 prefix assignments can be based on ND agreements come real
Existing prefix assignment, to reach the simplicity of prefix assignment realization.But before ND agreements itself can be carried out by way of RA multicasts
Sew distribution, therefore, when ND agreements are applied to the present invention, it is necessary to disable ND agreement RA multicast prefix assignment functions first, keep away
Exempt to distribute identical prefix to all users.
Firstly, it is necessary to initialized to processor 20, a prefix source is configured for processor 20, in the prefix source
Include multiple IPv6 prefixes that can distribute to user terminal, it is preferable that the prefix source can be a prefix pond.
Wherein, the multiple IPv6 prefixes include single user prefix and multi-user's prefix, the initialization procedure of processor 20
Further include the occupation proportion MPP (Multi-user Prefix Percentage) of predefined multi-user's prefix.The numerical value of MPP can
To be set as to be dynamically adjusted, concrete numerical value can be according to the multiple IPv6 prefixes that can distribute to user terminal
Quantity determines.Theoretically, the quantity of distributable IPv6 prefixes is more, and the numerical value of MPP is smaller, conversely, the numerical value of MPP is got over
Greatly.In actual use, the numerical value of MPP should be the smaller the better, has different IPv6 prefixes to reach different user terminals as possible.
In addition, 20 initialization procedure of processor further includes according to predefined MPP values come by each IPv6 in prefix source
Prefix is identified as single user prefix or multi-user's prefix, and the state of each IPv6 prefix is identified as unallocated state.
When identifying multi-user's prefix, need to identify user terminal number N MP (the user Number that multi-user's prefix can be assigned simultaneously
Per Multi-user Prefix), in initialization procedure, processor 20 can set NMP to a smaller data, such as
2, and the NMP is set as to be dynamically adjusted by the needs of processor 20.
Other information is also needed to since same prefix assignment has given multiple user terminals for multi-user's prefix
Realize that unique confirmation to user terminal, these information can be the MAC (Medium of link local address or user terminal
Access Control, media access control) address etc., which is not described herein again.
Fig. 3 shows that the present invention realizes the flow diagram of IPv6 prefix assignments.As shown in figure 3, being needed in user terminal
When configuring global unicast address, needing to send RS messages, receiver 10 receives the RS messages, after receiving the RS messages, place
Reason device 20 first checks for active user's terminal and whether has been associated with some arbitrary prefix then no longer using thus as long as relevant
The new prefix of family terminal distribution, and be to continue with notice it is original assigned the prefix to user terminal.In principle, a user terminal hair
Go out RS messages, after receiving RA messages, will not continue to send RS messages, but under certain abnormal conditions, still having can
Energy.Such as when the RA messages that user terminal should receive do not receive, lead to the route-map aging of itself, this can trigger user
Terminal continues to send RS messages to obtain route-map；Also a kind of situation is that user terminal itself breaks down, in failure
After recovery, RS messages are sent to obtain route-map, prefix information etc..The prefix distributed is recorded in processor 20 and is somebody's turn to do
User terminal associated by prefix, when checking whether user terminal had been associated with some arbitrary prefix, it is only necessary to handle
The respective record about the user terminal and its associated prefix is searched whether in device 20.
In the case where active user's terminal is not associated with arbitrary prefix, processor 20 detects single user prefix in prefix source
With the distribution state of multi-user's prefix, there is the case where single user prefix in unallocated state in current prefix source
Under, processor 20 is that the user terminal distributes a single user prefix for being in unallocated state；In current prefix source
Without the single user prefix in unallocated state, but in the case that there is multi-user's prefix in unallocated state,
A multi-user's prefix for being in unallocated state is distributed for the user terminal；And do not have place in current prefix source
In the single user prefix or multi-user's prefix of unallocated state, but with the feelings of multi-user's prefix in the state that can reallocate
Under condition, multi-user's prefix in the state that can reallocate is distributed for the user terminal.
In the current user terminal number for not having the single user prefix in unallocated state and multi-user's prefix and being assigned
In the case that mesh reaches predefined NMP, processor 20 needs the numerical value that MPP and/or NMP is turned up, and is in and can divide again to generate
Multi-user's prefix with state.Preferably, the numerical value of MPP can be increased by 5%, or preferably, the numerical value of NMP is adjusted to
Originally 2 times.Correspondingly, after the numerical value of adjustment MPP, the needs of processor 20 will be corresponding to the respective number of MPP institutes value added
Single user prefix be identified as multi-user's prefix, and set the state of multi-user's prefix of new logo to the state that can reallocate.
After the numerical value of adjustment NMP, the state by multi-user's prefix is needed to be set as the state that can reallocate.
For the prefix of each distribution, processor 20 needs to detect the message of user terminal associated with the prefix in real time
Interaction, wherein the message interaction includes：User terminal and for realizing the message interaction between the device of IPv6 prefix assignments,
Or user terminal by described for realizing the message interaction between the device and miscellaneous equipment of IPv6 prefix assignments.Processor
20 are not detected the message interaction in the first time predefined, then prefix of the recycling corresponding to the user terminal.Preferably,
In order to ensure the correctness and reliability of prefix recycling, the message interaction is not detected within first time predefined
In the case of, processor 20 also needs to send user's probe messages, the transmission of user's probe messages to the user terminal
Number is more than the respective feedback that preset times and the processor 20 are not received by the user terminal, then recycling, which corresponds to, is somebody's turn to do
The prefix of user terminal.Here there are many kinds of modes for probe messages, and simplest can be by NS (Neighbor
Solicitation, neighbor request) message is as probe messages, if it is possible to receive the NA (Neighbor of user terminal
Advertisement, neighbor advertisement) message, then it is assumed that user terminal is active, without recycling prefix.
Specifically, Fig. 4 shows the flow diagram of recycling IPv6 prefixes.As shown in figure 4, processor 20 was initializing
One can be arranged in journey and actively detect clock, this actively detects message interaction of the clock for detecting user terminal, and same
When the time-out time for actively detecting clock, i.e., the first time predefined above are set.This is actively hereafter detected into clock
The time-out time of referred to as interaction detecting clock, interaction detecting clock is unsuitable long, otherwise cannot reach the mesh of quickly recycling prefix
, but can not be too short, it is otherwise easy triggering user and detects and then send out excessive useless probe messages, network is caused to be gathered around
Plug.Preferably, the time-out time of interaction detecting clock could be provided as 5 minutes.Wherein, interaction detecting clock is directed to particular user
Terminal comes into force.During interaction detecting clock has not timed out, if detecting that message interaction has occurred in user terminal, reset again
Interaction detecting clock.
In the time-out time of interaction detecting clock, if user terminal does not carry out any message interaction, need to visit
Survey the validity of the user terminal.User's detecting clock can be arranged in initialization procedure and it is arranged for processor 20 surpasses
When time, hereinafter referred to as user's detecting clock, after user's detecting clock time-out, processor 20 sends primary use to user terminal
Family probe messages.The time-out time of user's detecting clock should not equally be arranged it is long or too short, can be interaction detecting clock
Time-out time 1/10th, it is preferable that can with value be 30 seconds.Wherein, user's detecting clock is directed to particular user terminal
It comes into force.
After the number for sending user's probe messages to user terminal is more than preset times, processor 20 does not receive still
To the respective feedback of the user terminal, then it is assumed that the user terminal has lost association, can recycle the user terminal and be closed
The prefix of connection.Here, setting user's detecting clock main purpose be ensure prefix recycling it is correct with it is reliable.Preferably, it sends out
The number of user's probe messages is sent to could be provided as 3 times.
In addition, if processor 20 detects and the IPv6 of the link local address of the associated user terminal of corresponding prefix neighbours
Residence has been deleted, then processor 20 detects the validity of the user terminal immediately, even if the clock of interaction detecting at this time has not timed out.
In the case where the prefix recycled is single user prefix, processor 20 sets the state of the single user prefix to
Unallocated state；In the case where the prefix recycled is multi-user's prefix in the state that can reallocate, if should after recycling
The associated number of users of prefix is 0, then processor 20 sets the state of multi-user's prefix to unallocated state, otherwise keeps former
State is constant；It is multi-user's prefix in the state that can not reallocate in the prefix recycled, then processor 20 is by the multi-user
The state of prefix is set as the state that can reallocate.
After having executed prefix recycling, if unappropriated prefix accounting exceeds predetermined value after recycling prefix, this is predetermined
Value is preferably numerical value 1-MPP, and/or recycling moment corresponding MPP values than predefined MPP values bigger, this explanation, in prefix time
After receipts, the prefix that can distribute to user is more abundant, at this point, processor 20 can accordingly decrease current MPP and/or work as
The value of preceding NMP.Preferably, the value of MPP, which can reduce by the value of 5% or NMP, can be reduced to original half.
After the value for reducing MPP, multi-user's prefix that processor 20 is additionally operable to correspond to MPP decreasing value numbers identifies
For single user prefix.After the value for reducing NMP, processor 20 is additionally operable to the user terminal currently distributed in multi-user's prefix
In the case that number is greater than or equal to the NMP values after reducing, the status indicator of multi-user's prefix is matched into state to be inseparable.With
It the case where this user terminal number currently distributed simultaneously, for multi-user's prefix is more than the NMP values after reducing, can't hold
Row prefix recycles, and is to maintain the state for the NMP values that prefix association user number is more than after reducing, until terminal user distribution
Prefix is normally recycled in such a way that above-mentioned prefix recycles.
In addition, before provided by the present invention for realizing that the device of IPv6 prefix assignments can also be reached based on DHCPv6 agreements
Sew the effect of distribution.
Preferably, prefix assignment mode provided by the present invention can also act on the distribution of address.I.e. in the base of prefix
On plinth, specific host id is supplemented, for using the user terminal of same prefix, different host ids can be distributed for it, into
And fully achieve the purpose that user is identified using prefix.
Correspondingly, the present invention also provides a kind of method for realizing IPv6 prefix assignments, this method includes：Receive by with
RS (Router Solicitation, router solicitation) message that family terminal is sent；According to the RS messages and multiple it is used for
The distribution state for distributing to the IPv6 prefixes of user terminal to distribute IPv6 prefixes for the user terminal, wherein the multiple
IPv6 prefixes include single user prefix and multi-user's prefix；And distributed IPv6 prefixes are sent to the user terminal.It should
The principle of method is similar to the above-mentioned operation principle of the device for realizing IPv6 prefix assignments, and which is not described herein again.
It is that different user is whole as possible provided by the present invention for realizing that the device and method of IPv6 prefix assignments can be realized
Different prefixes are distributed at end, are separated to user terminal by prefix and behaviour control.When lacking prefix, before multi-user
Sew and distributes identical prefix for a small amount of user, and in the case where available prefix number is enough, restore different user terminals again
Different prefixes.The prefix for being already allocated to user terminal but not used again can be recycled fast and accurately, in turn
It realizes and fully utilizes prefix resource.
The preferred embodiment of the present invention is described in detail above in association with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical scheme of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (8)
1. a kind of device for realizing IPv6 prefix assignments, which is characterized in that the device includes：
Receiver, for receiving RS (Router Solicitation, the router solicitation) message sent by user terminal；
Processor, for according to the distribution state of multiple IPv6 prefixes included in the RS messages and the processor come for
The user terminal distributes IPv6 prefixes, wherein the multiple IPv6 prefixes include single user prefix and multi-user's prefix；And
Transmitter, for sending distributed IPv6 prefixes to the user terminal；
The processor is one of following for executing：
In the case of the current single user prefix having in unallocated state, one is distributed in not for the user terminal
The single user prefix of distribution state；
Do not have the single user prefix in unallocated state current, but with multi-user's prefix in unallocated state
In the case of, distribute a multi-user's prefix for being in unallocated state for the user terminal；And
Do not have single user prefix or multi-user's prefix in unallocated state current, but in the shape that can reallocate
In the case of multi-user's prefix of state, multi-user's prefix in the state that can reallocate is distributed for the user terminal.
2. the apparatus according to claim 1, which is characterized in that the processor is additionally operable to：
In the current user terminal number for not having the single user prefix in unallocated state and multi-user's prefix and being assigned
Mesh reaches number of users NMP (the user Number per Multi-user that predefined multi-user's prefix can be assigned
Prefix in the case of), be turned up multi-user's prefix occupation proportion MPP (Multi-user Prefix Percentage) and/or
NMP, to generate multi-user's prefix in the state that can reallocate.
3. according to the device described in any one of claim 1-2 claims, which is characterized in that the processor is also used
In：
For the IPv6 prefixes of each distribution, the message interaction of user terminal associated with the IPv6 prefixes is detected；And
In the case where there is following one, IPv6 prefix of the recycling corresponding to the user terminal：
The message interaction is not detected in the first time predefined；And
In the case of the message interaction is not detected within first time predefined, sends and use to the user terminal
The transmission times of family probe messages, user's probe messages is more than preset times and the processor is not received by the use
The respective feedback of family terminal.
4. device according to claim 3, which is characterized in that after recycling the IPv6 prefixes, the processor is also
For in the case where current unallocated IPv6 prefixes ratio is more than predefined MPP beyond predetermined value and/or current MPP, dropping
Low current MPP and/or current NMP.
5. a kind of method for realizing IPv6 prefix assignments, which is characterized in that this method includes：
Receive RS (Router Solicitation, the router solicitation) message sent by user terminal；
IPv6 prefixes are distributed for the user terminal according to the distribution state of the RS messages and multiple IPv6 prefixes, wherein
The multiple IPv6 prefixes include single user prefix and multi-user's prefix；And
Distributed IPv6 prefixes are sent to the user terminal；
The method further includes one of execution or less：
In the case of the current single user prefix having in unallocated state, one is distributed in not for the user terminal
The single user prefix of distribution state；
Do not have the single user prefix in unallocated state current, but with multi-user's prefix in unallocated state
In the case of, distribute a multi-user's prefix for being in unallocated state for the user terminal；And
Do not have single user prefix or multi-user's prefix in unallocated state current, but in the shape that can reallocate
In the case of multi-user's prefix of state, multi-user's prefix in the state that can reallocate is distributed for the user terminal.
6. according to the method described in claim 5, it is characterized in that, the method further includes：
In the current user terminal number for not having the single user prefix in unallocated state and multi-user's prefix and being assigned
Mesh reaches number of users NMP (the user Number per Multi-user that predefined multi-user's prefix can be assigned
Prefix in the case of), be turned up multi-user's prefix occupation proportion MPP (Multi-user Prefix Percentage) and/or
NMP, to generate multi-user's prefix in the state that can reallocate.
7. according to the method described in any one of claim 5-6 claims, which is characterized in that the method further includes：
For the IPv6 prefixes of each distribution, the message interaction of user terminal associated with the IPv6 prefixes is detected；And
In the case where there is following one, IPv6 prefix of the recycling corresponding to the user terminal：
The message interaction is not detected in the first time predefined；And
In the case of the message interaction is not detected within first time predefined, sends and use to the user terminal
The transmission times of family probe messages, user's probe messages is more than preset times and is not received by the phase of the user terminal
It should feed back.
8. the method according to the description of claim 7 is characterized in that the method further includes：
After recycling the IPv6 prefixes, it is more than beyond predetermined value and/or current MPP in current unallocated IPv6 prefixes ratio
In the case of predefined MPP, current MPP and/or current NMP is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101753635A (en) * | 2008-12-17 | 2010-06-23 | 华为技术有限公司 | Method and system of collocating IPV6 (internet protocol version 6) addresses |
| CN102025797A (en) * | 2010-11-30 | 2011-04-20 | 北京星网锐捷网络技术有限公司 | Address prefix processing method, device, system and network equipment |
| CN102238075A (en) * | 2010-05-05 | 2011-11-09 | 杭州华三通信技术有限公司 | IPv6 (Internet Protocol version 6) routing establishing method based on Ethernet Point-to-Point Protocol and access server |
| CN102892108A (en) * | 2011-07-18 | 2013-01-23 | 中兴通讯股份有限公司 | Multiple address prefix distributing method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101753635A (en) * | 2008-12-17 | 2010-06-23 | 华为技术有限公司 | Method and system of collocating IPV6 (internet protocol version 6) addresses |
| CN102238075A (en) * | 2010-05-05 | 2011-11-09 | 杭州华三通信技术有限公司 | IPv6 (Internet Protocol version 6) routing establishing method based on Ethernet Point-to-Point Protocol and access server |
| CN102025797A (en) * | 2010-11-30 | 2011-04-20 | 北京星网锐捷网络技术有限公司 | Address prefix processing method, device, system and network equipment |
| CN102892108A (en) * | 2011-07-18 | 2013-01-23 | 中兴通讯股份有限公司 | Multiple address prefix distributing method and system |
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