CN102664971B - Network address resources management method, system and external address Resource Server - Google Patents
Network address resources management method, system and external address Resource Server Download PDFInfo
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Abstract
The invention discloses a kind of network address resources management method, system and external address Resource Server, CGN entity is by expansion PCP message, and externally address resource server request distributes the free external address resource on external address resource or this CGN of request recovery entity; External address Resource Server, according to the request of CGN entity, reclaims for CGN entity partitioning external address resource or to the free external address resource that CGN entity requests reclaims.Adopt the present invention, CGN external address resource can be managed concentratedly, optimize application and the removal process of external address resource, improve the utilance of address resource.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of network address resources management method, system and external address Resource Server.
Background technology
Network address translation (NetworkAddressTranslation, be called for short NAT) belong to access wide area network (WAN) technology, be one be the switch technology of legitimate ip address by privately owned (reservation) address spaces, it is widely used in all kinds Internet access way and various types of network.NAT can solve the problem of shortage of ip address.
Carrier class networks conversion (CarrierGradeNetworkAddressTranslation is called for short CGN) is a kind of technology of carrying out address information conversion in the operator network.Along with the exhaustion of IPv4 address resource, operator's address resource problem in the urgent need to address.Operator uses private (reservation) address in inside, disposing CGN equipment in the porch of the Internet of operator is a kind of technology wherein.When user accesses Internet, inner IPv4 address converts public network address on CGN equipment; During from Internet access operator network, public network address converts the home address of operator on CGN equipment.
The concrete product form of CGN comprises: business router, BAS Broadband Access Server, fire compartment wall, core router, wireless core network gateway GGSN/PGW etc.
Port control protocols (PortControlProtocol is called for short PCP) solves NAT internal network to receive into a kind of agreement to data flow.When the node of NAT internal network receives the flow of external network, if internal node does not have and the source of this flow carried out connection, so this flow will be dropped on NAT device; If flow is before NAT device, use PCP technology sets up the NAT map entry about this flow on NAT device, then, when flow arrives, can reach internal receipt node through NAT device.PCP is divided into PCP client and PCP server end, and PCP client uses PCP request message to the application of PCP server end or release NAT map entry.
Under carrier-class NAT (CGN) scene, there is external address pond in CGN entity (also referred to as CGN equipment or referred to as CGN in literary composition), in address pool, comprise multiple external address.When the data message of the terminal access external network of internal network distributes external address and outside port through CGN, CGN from address pool, the home address in replacement data message and internal port.
But the way of above-mentioned designated external address pool on CGN exists following not enough:
First, operator must when disposing CGN equipment, and planning external address resource, for each CGN distributes fixing external address resource.When the address resource deficiency that certain CGN is current needs increase external address resource or existing address resource fully not to use and needs to reclaim, need on CGN by gateway or the configuration of command line interface adjustment external address resource pool, when the CGN equipment of operator is many, this amendment configuration effort amount is very large, and What is more, and amendment configuration also can normally run by traffic affecting.
Secondly, due to can not the distribution of dynamic conditioning external address resource, external address fully can not be shared, cause the waste of address resource to a certain extent.
Moreover, when external address resource distribution is on multiple CGN equipment, be with inconvenience also to the use of the monitored address resource of operator, because multiple CGN equipment must be taken into account when monitoring.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of network address resources management method, system and external address Resource Server, CGN external address resource can be managed concentratedly, optimize application and the removal process of external address resource, and improve the utilance of address resource.
For solving the problems of the technologies described above, the invention provides a kind of network address resources management method,
Carrier class networks conversion (CGN) entity is by Extended Capabilities Port control protocol (PCP) message, and externally address resource server request distributes the free external address resource on external address resource or this CGN of request recovery entity;
Described external address Resource Server, according to the request of described CGN entity, reclaims for described CGN entity partitioning external address resource or to the free external address resource that described CGN entity requests reclaims.
Further, described CGN entity sends external address resource request message to described external address Resource Server, asks described external address Resource Server to distribute external address resource;
When described external address Resource Server receives the external address resource request message of described CGN entity transmission, from external address resource pool, take out external address Resourse Distribute to described CGN entity, and the external address Resource Encapsulation of distribution is returned to described CGN entity in outside address resource response message;
When described CGN entity receives the external address resource response message that described external address Resource Server returns, from described external address resource response message, take out the external address resource conservation of distribution in this locality.
Further, described CGN entity sends external address resource reclaim request message to described external address Resource Server, asks described external address Resource Server to reclaim free external address resource on this CGN entity;
When described external address Resource Server receives the external address resource reclaim request message of described CGN entity transmission, the described free external address resource that described CGN entity requests reclaims is recovered in described external address resource pool, and returning to external address resource reclaims response message to described CGN entity;
The external address resource response message that described CGN entity returns according to the described external address Resource Server received, confirms that the described free external address resource that request is reclaimed reclaims.
Further, when described CGN entity starts and needs first piece of external address resource or when described CGN entity exhausts one piece of external address resource, and/or, when the number that described CGN entity consumes address resource reaches certain ratio, send described external address resource request message to described external address Resource Server.
Further, when external address resource idle on described CGN entity exceedes some, described CGN entity sends described external address resource request message to described external address Resource Server.
Further, described in described CGN entity requests, external address Resource Server distributes one or more external address resource.
Further, external address Resource Server described in described CGN entity requests reclaims the one or more free external address resources on this CGN;
And the described free external address resource that external address Resource Server described in described CGN entity requests reclaims is some or all of in all free external address resources on this CGN entity.
Present invention also offers a kind of external address Resource Server, comprise PCP server and external address resource pool,
Described PCP server is used for, according to the expansion PCP protocol message that CGN entity sends, from external address resource pool, take out external address Resourse Distribute be recovered in described external address resource pool to described CGN entity or by the described free external address resource that described CGN entity requests reclaims.
Further, described PCP server is used for, when receiving the external address resource request message of described CGN entity transmission, from described external address resource pool, take out external address Resourse Distribute to described CGN entity, and the external address Resource Encapsulation of distribution is returned to described CGN entity in outside address resource response message;
When receiving the external address resource reclaim request message of described CGN entity transmission, the described free external address resource that described CGN entity requests reclaims is recovered in described external address resource pool, and returning to external address resource reclaims response message to described CGN entity.
Further, described PCP server is used for, the external address resource request message sent according to described CGN entity or described external address resource reclaim request message, reclaim for described CGN entity partitioning one or more external address resource or to the one or more free external address resources on described CGN entity.
In addition, present invention also offers a kind of network address resources management system, described system comprises external address Resource Server, and comprise the CGN group of entities of multiple CGN entity, described external address Resource Server comprises PCP server and external address resource pool further, described CGN entity comprises PCP client further, wherein:
Described PCP server is used for, according to the expansion PCP protocol message that CGN entity sends, from external address resource pool, take out external address Resourse Distribute to described CGN entity or be recovered in described external address resource pool by the described free external address resource that described CGN entity requests reclaims;
Described PCP client is used for, and sends expansion PCP protocol message, reclaim the free external address resource on this CGN entity to described external address Resource Server request dispatching external address resource or request to described external address Resource Server.
Further, described PCP client is used for, and sends external address resource request message to described external address Resource Server, asks described external address Resource Server to distribute external address resource; When receiving the external address resource response message that described external address Resource Server returns, from described external address resource response message, take out the external address resource conservation of distribution in this locality; And,
Send external address resource reclaim request message to described external address Resource Server, ask described external address Resource Server to reclaim free external address resource on this CGN entity; And according to the external address resource response message that the described external address Resource Server received returns, confirm that the described free external address resource that request is reclaimed reclaims.
Further, described PCP client is used for, when this CGN entity starts and needs first piece of external address resource or when exhausting one piece of external address resource when this CGN entity, and/or, when the number that this CGN entity consumes address resource reaches certain ratio, send described external address resource request message to described external address Resource Server;
When external address resource idle on this CGN entity exceedes some, send described external address resource request message to described external address Resource Server.
Further, described PCP client is used for, and asks described external address Resource Server to distribute one or more external address resource;
Or, ask described external address Resource Server to reclaim one or more free external address resources on this CGN; And the described free external address resource of asking described external address Resource Server to reclaim is some or all of in all free external address resources on this CGN entity.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the external address application handling process schematic diagram of CGN;
Handling process schematic diagram when Fig. 2 is the external address application of external address Resource Server;
Fig. 3 is the external address recycling schematic flow sheet on CGN;
Handling process schematic diagram when Fig. 4 is the external address recovery of external address Resource Server;
Fig. 5 is the composition schematic diagram of the network address resources management system of the embodiment of the present invention;
Fig. 6 is the interaction flow schematic diagram between CGN entity and the unit of external address Resource Server when outside address resource application;
Fig. 7 is the interaction flow schematic diagram between CGN entity and the unit of external address Resource Server when outside address resource reclaims;
Fig. 8 is the scene schematic diagram of the specific embodiment of the invention;
First piece of external address resource allocation process schematic diagram when Fig. 9 is CGN1 startup;
First piece of external address resource allocation process schematic diagram when Figure 10 is CGN2 startup;
Figure 11 is next the block external address resource allocation process schematic diagram after CGN1 external address resource consumption to certain proportion;
Figure 12 is next the block external address resource allocation process schematic diagram after CGN2 external address resource consumption to certain proportion;
Figure 13 is the process schematic reclaiming external address resource after the number of CGN1 external address resource free time exceedes some;
Figure 14 is the process schematic reclaiming external address resource after the number of CGN2 external address resource free time exceedes some.
Embodiment
Present embodiments provide for a kind of network address resources management method, by the mode of expansion PCP agreement, realize the dynamic management of external address resource, concrete scheme is as follows:
External address Resource Server, according to the expansion PCP Protocol Request message of CGN entity, reclaims for CGN entity partitioning external address resource or to free external address resource to be recycled in CGN entity.
Particularly, be the centralized management realizing external address resource on an external address Resource Server, each CGN entity sends by externally address server application (distributions) or the recovery that expansion PCP Protocol Request message carries out address.
Further,
Fig. 1 and Fig. 2 is respectively the external address resource bid handling process on CGN and external address Resource Server.
As shown in Figure 1, when CGN needs external address resource, to external address Resource Server, apply for that the idiographic flow of external address resource is as follows:
CGN externally address resource server sends external address resource (application) request message;
CGN receives the external address resource response message that external address Resource Server returns;
CGN by the external address resource conservation that gets from external address resource response message on CGN.
As shown in Figure 2, when external address Resource Server receives the external address resource request message of CGN, concrete handling process is as follows:
External address Resource Server receives the external address resource request message that CGN sends;
External address Resource Server is that CGN distributes external address resource, and by the external address Resource Encapsulation of distribution in external resource response message;
External address Resource Server is to CGN returning to external address resource response message.
Wherein, the address resource of described CGN application can be one also can be multiple, can improve the efficiency of application when to apply for multiple address resource simultaneously.
The time of described CGN application external address resource can be:
When CGN starts needs first piece of external address resource;
When CGN is by one piece of external address resource exhaustion;
And/or, when the number that CGN consumes address resource reaches certain ratio.
Wherein, described external address resource bid is realized by expansion PCP agreement, and external address request message is wherein the PCP request message of expansion, and type of message is set to external address resource bid type.External address resource response message is the PCP response message of expansion, and type of message is set to external address resource bid type.Can carry the number of the external address of request in request message, the number of the external address encapsulated in response message is the request number of carrying in request message; Also the number of request external address can not be carried, the external address of encapsulation acquiescence number in response message in request message.
Fig. 3 and Fig. 4 is respectively the external address recycling flow process on CGN and external address Resource Server.
As shown in Figure 3, when CGN needs to reclaim local free external address resource, idiographic flow is as follows:
CGN externally address resource server sends external address resource reclaim request message;
CGN receives the external address resource reclaim response message that external address Resource Server returns;
According to the external address resource reclaim response message received, CGN confirms that the external address resource that request is reclaimed reclaims.
As shown in Figure 4, when external address Resource Server receives the external address resource reclaim request of CGN, concrete handling process is as follows:
External address Resource Server receives the external address resource reclaim request message that CGN sends;
External address Resource Server reclaims the external address resource to be recycled on CGN;
External address Resource Server reclaims response message to CGN returning to external address resource.
Wherein, unified external address resource pool can be set in external address Resource Server, when external address Resource Server receives the external address resource request of CGN entity, from external address resource pool, take out external address Resourse Distribute to described CGN entity; When external address Resource Server receives the external address resource reclaim request of CGN entity, by the external address resource reclaim to be recycled on CGN in external address resource pool.
Particularly, when the external address resource on CGN needs to reclaim, CGN reclaims idle external address resource from this locality, and then CGN externally address resource server transmission external address resource reclaim request message, carries the external address resource of recovery in request message; After external address Resource Server receives described request message, request external address resource pool reclaims external address resource; After external address resource pool reclaims external address resource, external address Resource Server reclaims response message to CGN returning to external address resource, and CGN receives described response message and confirms that external address resource reclaims.
The external address resource number of described recovery can be one also can be multiple, when asking the efficiency that can improve recovery when reclaiming multiple simultaneously.
Time of described recovery external address resource is that external address resource idle on CGN is when exceeding some.
The number of the described address resource reclaimed on CGN can be a part for free external address resource also can be the whole of free external address resource.
Further, described external address resource reclaim message is realized by expansion PCP agreement.External address resource reclaim request message is wherein the PCP request message of expansion, and type of message is set to external address resource reclaim type.External address resource reclaim response message is the PCP response message of expansion, and type of message is set to external address resource reclaim type.The external address resource of recovery is carried in request message; Response message returns to client and confirms external address resource reclaim.
For making the object, technical solutions and advantages of the present invention clearly understand, hereinafter will be described in detail to embodiments of the invention by reference to the accompanying drawings.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combination in any mutually.
Fig. 5 shows the composition schematic diagram of the network address resources management system of the embodiment of the present invention, it mainly comprises: external address Resource Server and CGN group of entities, CGN group of entities is made up of multiple CGN entity, lists three CGN entities in the present embodiment for example illustrates.
Wherein, described CGN entity specifically comprises: PCP client.The function of the PCP client of described CGN entity specifically comprises: externally the PCP server of address resource server sends PCP external address resource request message; The PCP external address resource response message that the PCP server receiving external address Resource Server returns; External address resource conservation is obtained on CGN from PCP external address resource response message; External address resource is reclaimed from this locality; By the external address Resource Encapsulation of recovery in external address resource reclaim request message; Externally the PCP server of address resource server sends PCP external address resource reclaim request message; The PCP external address resource reclaim response message that the PCP server receiving external address Resource Server returns, etc.
Described external address resource service implement body comprises: PCP server and external address resource pool.
Described PCP server is used for, according to the expansion PCP protocol message that CGN entity sends, from external address resource pool, take out external address Resourse Distribute be recovered in described external address resource pool to described CGN entity or by the described free external address resource that described CGN entity requests reclaims.
Further, described PCP server is used for, when receiving the external address resource request message of described CGN entity transmission, from described external address resource pool, take out external address Resourse Distribute to described CGN entity, and the external address Resource Encapsulation of distribution is returned to described CGN entity in outside address resource response message;
When receiving the external address resource reclaim request message of described CGN entity transmission, the described free external address resource that described CGN entity requests reclaims is recovered in described external address resource pool, and returning to external address resource reclaims response message to described CGN entity.
Further, described PCP server is used for, the external address resource request message sent according to described CGN entity or described external address resource reclaim request message, reclaim for described CGN entity partitioning one or more external address resource or to the one or more free external address resources on described CGN entity.
Wherein, the function of the PCP server of described external address Resource Server specifically comprises: receive the PCP external address resource request message that CGN entity sends; Externally address resource pond application external address resource; External address Resource Encapsulation will be assigned to in PCP external address resource response message; Send the PCP client of PCP external address resource response message to CGN entity; Receive the PCP external address resource reclaim request message that CGN entity sends; External address resource to be recycled is obtained from PCP external address resource reclaim request message; Externally external address resource is reclaimed in the request of address resource pond; PCP client returning to external address resource to CGN entity reclaims response message.
The function of the external address resource pool of described external address Resource Server comprises: the external address resource bid request receiving PCP server; For PCP server-assignment external address resource; The external address resource of distribution is returned to PCP server; Receive the external address resource that PCP server reclaims; The external address resource of recovery is set to upstate.
In addition, as shown in Figure 5, in the embodiment of the present invention, additionally provide a kind of external address Resource Server, comprise above-mentioned PCP server and external address resource pool.
Interaction flow when Fig. 6 describes CGN entity and external address Resource Server application external address resource between unit, this flow process mainly comprises the steps:
The PCP client transmission types of step 601:CGN entity is the PCP server of PCP request message to external address Resource Server of application external address resource type.
Step 602: after the PCP server of external address Resource Server receives the PCP request message of application external resource address, the externally external address resource pool application external address of address resource server.
Step 603: the external address resource that the external address resource pool of external address Resource Server distributes returns to PCP server.
Step 604: the external address Resource Encapsulation that external address resource pool distributes by the PCP server of external address Resource Server is in PCP response message, and the PCP client then to CGN entity sends PCP response message.
The PCP client of step 605:CGN entity receives PCP response message, obtains external address resource from PCP response message, is then saved in CGN entity.
Fig. 7 describes interaction flow when CGN entity and external address Resource Server reclaim external address resource between unit, and this flow process mainly comprises the steps:
The PCP client transmission types of step 701:CGN entity is the PCP server of request message to external address Resource Server of external address resource reclaim, carries the external address resource of recovery in described message.
Step 702: the PCP server of external address Resource Server receives the request message of external address resource reclaim, the external address resource needing to reclaim is obtained from described message, these described external address resources reclaimed are sent to the external address resource pool of external address Resource Server, these external address resources are reclaimed in address resource pond.
Step 703: the PCP server of external address Resource Server sends external address resource reclaim response message.
After the PCP client of step 704:CGN entity receives external address resource reclaim response message, confirm that the external address resource sent reclaims.
Fig. 8 is a better realization of this invention.Exist by external address resource service management in the external address resource set of two CGN:CGN1 and CGN2, CGN1 and CGN2, case of external address resource is: 1.1.1.1 ~ 1.1.1.100.
The concrete external address resource bid of CGN1 and CGN2 is divided into: first piece of external address Resourse Distribute during startup and next the block external address Resourse Distribute after external address resource consumption to certain proportion.
First piece of external address resource allocation process when Fig. 9 is CGN1 startup, this flow process mainly comprises the steps:
Step 901:CGN1 starts.
Step 902:CGN1 externally address resource server sends PCP request message, applies for first piece of external address resource.
Step 903: external address Resource Server distributes external address resource, supposes to be assigned with 10 external addresss, is specially: 1.1.1.1 ~ 1.1.1.10.By the external address Resource Encapsulation of distribution to PCP response message, be then sent to CGN1.
Step 904:CGN1 receives PCP response message, gets the external address resource of distribution, is saved on CGN1.
Figure 10 shows first piece of external address resource allocation process when CGN2 starts.Specifically process is identical with Fig. 9 for it, repeats no more here.Finally, first piece of external address that CGN2 assigns to from external address Resource Server is 1.1.1.11 ~ 1.1.1.20.
Figure 11 is the external address resource that consumes of CGN1 when reaching 80%, and the externally process of next block external address resource of address resource server application, this process mainly comprises the steps:
The external address resource that step 1101:CGN1 consumes reaches 80%.
Step 1102:CGN1 externally address resource server sends PCP request message, applies for one piece of external address resource.
Step 1103: external address Resource Server distributes external address resource (1.1.1.21 ~ 1.1.1.30), by external address Resource Encapsulation in PCP response message, then sends to CGN1.
After step 1104:CGN1 receives PCP response message, obtain external address resource conservation on CGN1.
Figure 12 is the external address resource that consumes of CGN2 when reaching 80%, the externally process of next block external address resource of address resource server application.Concrete process is identical with Figure 11, repeats no more here.Finally, the external address that CGN2 assigns to next block from external address Resource Server is 1.1.1.31 ~ 1.1.1.40.
When CGN1 and CGN2 applies for two pieces of described external address resources, if when the external address number of resources of free time is greater than 10, CGN1 and CGN2 needs recovery 10 external address resources.
Figure 13 is the interaction diagrams that CGN1 reclaims external address resource, and this flow process mainly comprises the steps:
Step 1301: when the number of the external address resource of the free time on CGN1 looked into 10, starts external address resource reclaim flow process.
Step 1302:CGN1 externally address resource server sends the request of external address resource reclaim, comprises the external address resource (1.1.1.21 ~ 1.1.1.30) that needs reclaim in request message.
Step 1303: external address Resource Server receives the request of external address resource reclaim, reclaims external address resource (1.1.1.21 ~ 1.1.1.30), then sends external address resource reclaim response message to CGN1.
After step 1304:CGN1 receives external address resource reclaim response message, confirm that external address resource reclaims.
Figure 14 is the interaction figure that CGN1 reclaims external address resource, and detailed process is consistent with Figure 13, repeats no more here.Finally, external address Resource Server has reclaimed the external address resource (1.1.1.31 ~ 1.1.1.40) of CGN2.
These are only preferred case study on implementation of the present invention; be not limited to the present invention; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection range that all should belong to the claim appended by the present invention.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
Claims (13)
1. a network address resources management method, is characterized in that,
Carrier class networks conversion CGN entity is by Extended Capabilities Port control protocol PCP message, and externally address resource server request distributes the free external address resource on external address resource or this CGN of request recovery entity;
Described external address Resource Server, according to the request of described CGN entity, reclaims for described CGN entity partitioning external address resource or to the free external address resource that described CGN entity requests reclaims;
When described CGN entity starts and needs first piece of external address resource and/or when described CGN entity exhausts one piece of external address resource, send described external address resource request message to described external address Resource Server;
When external address resource idle on described CGN entity exceedes some, described CGN entity sends described external address resource request message to described external address Resource Server.
2. the method for claim 1, is characterized in that,
Described CGN entity sends external address resource request message to described external address Resource Server, asks described external address Resource Server to distribute external address resource;
When described external address Resource Server receives the external address resource request message of described CGN entity transmission, from external address resource pool, take out external address Resourse Distribute to described CGN entity, and the external address Resource Encapsulation of distribution is returned to described CGN entity in outside address resource response message;
When described CGN entity receives the external address resource response message that described external address Resource Server returns, from described external address resource response message, take out the external address resource conservation of distribution in this locality.
3. method as claimed in claim 2, is characterized in that,
Described CGN entity sends external address resource reclaim request message to described external address Resource Server, asks described external address Resource Server to reclaim free external address resource on this CGN entity;
When described external address Resource Server receives the external address resource reclaim request message of described CGN entity transmission, the described free external address resource that described CGN entity requests reclaims is recovered in described external address resource pool, and returning to external address resource reclaims response message to described CGN entity;
The external address resource response message that described CGN entity returns according to the described external address Resource Server received, confirms that the described free external address resource that request is reclaimed reclaims.
4. method as claimed in claim 2, is characterized in that,
When the number that described CGN entity consumes address resource reaches certain ratio, send described external address resource request message to described external address Resource Server.
5. the method as described in claim 2 or 4, is characterized in that,
Described in described CGN entity requests, external address Resource Server distributes one or more external address resource.
6. the method as described in claim 1 or 3, is characterized in that,
External address Resource Server described in described CGN entity requests reclaims the one or more free external address resources on this CGN;
And the described free external address resource that external address Resource Server described in described CGN entity requests reclaims is some or all of in all free external address resources on this CGN entity.
7. an external address Resource Server, is characterized in that, comprises PCP server and external address resource pool,
Described PCP server is used for, according to the expansion PCP protocol message that CGN entity sends, from external address resource pool, take out external address Resourse Distribute to described CGN entity or be recovered in described external address resource pool by the free external address resource that described CGN entity requests reclaims;
Described PCP server also for, when described CGN entity starts and needs first piece of external address resource and/or, when described CGN entity exhausts one piece of external address resource, receive described CGN entity send external address resource request message;
When external address resource idle on described CGN entity exceedes some, receive the described external address resource request message that described CGN entity sends.
8. external address Resource Server as claimed in claim 7, is characterized in that,
Described PCP server is used for, when receiving the external address resource request message of described CGN entity transmission, from described external address resource pool, take out external address Resourse Distribute to described CGN entity, and the external address Resource Encapsulation of distribution is returned to described CGN entity in outside address resource response message;
When receiving the external address resource reclaim request message of described CGN entity transmission, the described free external address resource that described CGN entity requests reclaims is recovered in described external address resource pool, and returning to external address resource reclaims response message to described CGN entity.
9. external address Resource Server as claimed in claim 8, is characterized in that,
Described PCP server is used for, the external address resource request message sent according to described CGN entity or described external address resource reclaim request message, reclaim for described CGN entity partitioning one or more external address resource or to the one or more free external address resources on described CGN entity.
10. a network address resources management system, it is characterized in that, described system comprises external address Resource Server, and comprise the CGN group of entities of multiple CGN entity, described external address Resource Server comprises PCP server and external address resource pool further, described CGN entity comprises PCP client further, wherein:
Described PCP server is used for, according to the expansion PCP protocol message that CGN entity sends, from external address resource pool, take out external address Resourse Distribute to described CGN entity or be recovered in described external address resource pool by the free external address resource that described CGN entity requests reclaims;
Described PCP client is used for, and sends expansion PCP protocol message, reclaim the free external address resource on this CGN entity to described external address Resource Server request dispatching external address resource or request to described external address Resource Server;
Described PCP client is used for, when this CGN entity starts and needs first piece of external address resource and/or, when this CGN entity exhausts one piece of external address resource, send described external address resource request message to described external address Resource Server;
When external address resource idle on this CGN entity exceedes some, send described external address resource request message to described external address Resource Server.
11. systems as claimed in claim 10, is characterized in that,
Described PCP client is used for, and sends external address resource request message to described external address Resource Server, asks described external address Resource Server to distribute external address resource; When receiving the external address resource response message that described external address Resource Server returns, from described external address resource response message, take out the external address resource conservation of distribution in this locality; And,
Send external address resource reclaim request message to described external address Resource Server, ask described external address Resource Server to reclaim free external address resource on this CGN entity; And according to the external address resource response message that the described external address Resource Server received returns, confirm that the described free external address resource that request is reclaimed reclaims.
12. systems as claimed in claim 11, is characterized in that,
When the number that this CGN entity consumes address resource reaches certain ratio, send described external address resource request message to described external address Resource Server.
13. systems as described in claim 10 or 11, is characterized in that,
Described PCP client is used for, and asks described external address Resource Server to distribute one or more external address resource;
Or, ask described external address Resource Server to reclaim one or more free external address resources on this CGN; And the described free external address resource of asking described external address Resource Server to reclaim is some or all of in all free external address resources on this CGN entity.
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| CN103685586B (en) * | 2012-09-07 | 2018-09-04 | 中兴通讯股份有限公司 | A kind of methods, devices and systems for realizing that address is shared |
| CN103535015B (en) * | 2013-05-24 | 2016-11-23 | 华为技术有限公司 | The management method of public network address resource, port control protocols server and client |
| CN106161534B (en) * | 2015-04-09 | 2021-05-11 | 中兴通讯股份有限公司 | Method and apparatus for transmitting, transferring and acquiring capabilities |
| CN105391774B (en) * | 2015-10-15 | 2018-11-13 | 珠海市君天电子科技有限公司 | Resource request method and device based on amazon network server |
| CN106612196B (en) * | 2015-10-23 | 2019-02-01 | 华为技术有限公司 | Obtain the method and device of resource |
| CN114039951A (en) * | 2021-11-08 | 2022-02-11 | 北京天融信网络安全技术有限公司 | Method, device and system for dynamically allocating address pool |
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