CN101378340A - Method for obtaining internet protocol address prefixing, operator edge equipment and client terminal equipment - Google Patents
Method for obtaining internet protocol address prefixing, operator edge equipment and client terminal equipment Download PDFInfo
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Abstract
The invention provides a method for acquiring internet protocol address prefixes, which comprises the steps that: an operator edge device transmits advertisement messages to client equipment to inform the prefix information used for accessing the operator network and/or services, the client equipment chooses corresponding prefixes from the advertisement messages according to the operator network and/or services wanting to be accessed so as to use the prefixes for address configuration, therefore, the client equipment can be effectively accessed with the wanted operator and/or services in the network with a plurality of operators and services. The invention also provides the operator edge device and the client equipment for realizing the method.
Description
Technical field
The present invention relates to Internet technology, relate in particular to a kind of provider edge equipment and client device that obtains the method for internet protocol address prefixing and realize this method.
Background technology
According to existing IPv6 agreement, by defined Neighbor Discovery Protocol in the Internet engineering duty group (IETF) standard RFC2461/RFC4311 (Neighbor Di scovery Protocol) prefix (prefix) with the form advertisement IP address of option in router advertisement message (RouterAdvertisement Message, be called for short RA).Client device as multi-homed host (multihomed host), can obtain more than onely connecting (On-Link) global prefixes, and then obtain more than one global I Pv6 address.The IPv6 agreement is not to prefix definition sign and purposes, when main frame sends the IP bag, need to select the IPv6 address, and select gateway according to " next is jumped and determines algorithm (Next-Hop DeterminationAlgorithm) " of RFC2461 regulation according to " default address selection algorithm (the Default Address Selection Algorithm) " of RFC3484 regulation.
Yet these two kinds of algorithms may cause main frame to do the selection that makes mistake sometimes.Fig. 1 shows an example under a plurality of operators situation, wherein adopts IPoE (IP over Ethernet) mode to communicate by letter.The alleged operator of this paper is meant to IP-based user provides professional operator, as the ISP of Internet service provider (Internet Service Provider) etc.Main frame 1 and main frame 2 are connected on layer 3 edge device of ISP1 of operator and the ISP2 of operator via the customer premises equipment, CPE (CPE) of layer 1 or layer 2 and the access and multiplexing device (AM) of layer 1 or layer 2, wherein, customer premises equipment, CPE can be DSL modulator-demodulator, Ethernet switch, hub (HUB) or wireless local network connecting point (AP), and access and multiplexing device can be DSLAM, Ethernet switch, hub, wireless local network connecting point or base station (Node B).Main frame 1 can dynamically select the ISP of operator with access internet with main frame 2, that is to say that its prefix will change because of selecting different operators with default gateway.Suppose that main frame 1 and main frame 2 are respectively the user of ISP1 of operator and the ISP2 of operator.According to prior art, main frame 1 and main frame 2 all might obtain the prefix by the layer 3 edge device advertisement of ISP1 of operator and the ISP2 of operator, and generate corresponding IPv6 address thus.This just following situation may occur, promptly when main frame 1 need communicate, it may select the prefix by the layer 3 edge device institute advertisement of the ISP2 of operator, generates the IPv6 address thus as IPv6 address, its source, and layer 3 edge device of the ISP2 of operator are chosen as default gateway.But, because main frame 1 is not the user of the ISP2 of operator, when the ISP2 of operator receives the IP bag of main frame 1, just can abandon, make that main frame 1 can not success communication.
In fact, the network environment with a plurality of operators will be very general, therefore, also is necessary based on the addressing of operator.Operator can also utilize different prefixes that multiple business is provided with transponder (VRF) by a plurality of virtual routers.From the example of Fig. 1 as can be seen, existing prefix advertisements mechanism, " default address selection algorithm " and " next is jumped and determines algorithm " still can not satisfy and be about to the multi-operator and the multibusiness network environment requirement that generally occur.
IETF RFC4191 has proposed neighbours are found a kind of optional expansion of router advertisement message, is used for to the preferred default router of main frame advertisement and other specific route.But router still can not be notified to main frame with the purposes (also being the corresponding relation between prefix and business or the operator) of prefix, and main frame can not be selected prefix according to its operator or business of wanting to insert.
There is a kind of method to be used to guarantee that main frame or user terminal insert the network of its corresponding operator in the prior art.This method utilizes Virtual Local Area Network to isolate operator.But the shortcoming of this method is: if each operator has a VLAN, so just can not support dynamic service selection; And if each main frame has a VLAN, then need many VLAN to be used for each access and multiplexing device, it is complicated that network is realized.
Summary of the invention
The objective of the invention is, a kind of prefix advertisements mechanism that is applicable to the network environment with a plurality of operators and/or multiple business is provided and realizes provider edge equipment and the client device that this is machine-processed, make that client device can be according to the operator that wants to insert and/or professional and correspondingly select the prefix of IP address.
The present invention proposes a kind of method of obtaining internet protocol address prefixing, wherein, set in advance and be used to distinguish operator's sign of operator and/or be used to distinguish each professional service identification that an operator is provided, in provider edge equipment, preserve operator's sign of this edge device support and/or the corresponding relation between service identification and the prefix, in client device, preserve this client device operable operator sign and/or service identification; This method comprises:
Step 11: the prefix information that this edge device of provider edge equipment advertisement is supported, described prefix information comprise prefix that operator's sign that this edge device is supported and/or service identification, this edge device are supported and the corresponding relation between described operator sign and/or service identification and the described prefix;
Step 12: when needs obtain prefix, client device is based on the operable operator of this client device sign and/or service identification, operator's sign and/or the pairing prefix of service identification selecting this client device to use or wish to use from the prefix information of the described advertisement that receives.
As a preferred version of this method, further make client device preserve the priority of this client device operable operator sign and/or service identification; After step 12, further comprise:
Step 13: client device is further selected prefix based on the priority of this client device operable operator sign and/or service identification from the selected prefix of step 12.
As another preferred version of this method, further in provider edge equipment, preserve the priority of the prefix of provider edge equipment support; In step 11, further comprise the priority information of prefix in the described prefix information of provider edge equipment advertisement; After step 12 or step 13, further comprise:
Step 14: client device is further selected prefix based on the priority information of the described prefix of provider edge equipment advertisement from step 12 or the selected prefix of step 13.
This method is in step 11, and provider edge equipment carries the prefix information that this edge device is supported by increase an option in router advertisement message.
Based on same inventive concept, the present invention also provides the another kind of method of obtaining internet protocol address prefixing, it is characterized in that, set in advance and be used to distinguish operator's sign of operator and/or be used to distinguish each professional service identification that an operator is provided, in provider edge equipment, preserve operator's sign of this edge device support and/or the corresponding relation between service identification and the prefix, in client device, preserve this client device operable operator sign and/or service identification; This method comprises:
Step 21: client device sends request, and described request carries operator's sign and/or the service identification that this client device can use or wish to use, to obtain corresponding prefix information from provider edge equipment;
Step 22: provider edge equipment receives described request, and operator's sign and/or the service identification of selecting at least one this edge device to support in the operator of from described request, carrying sign and/or the service identification, utilize the corresponding relation between operator's sign that operator's sign that described at least one this edge device supports and/or service identification and corresponding prefix thereof and described at least one this edge device support and/or the service identification prefix corresponding with it, structure returns to the prefix information of described client device;
Step 23: provider edge equipment returns advertisement to described client device, and the prefix information that wherein carries comprises the corresponding relation between operator's sign that operator's sign that described at least one this edge device is supported and/or service identification and corresponding prefix and described at least one this edge device thereof are supported and/or the service identification prefix corresponding with it;
Step 24: client device receives the advertisement of returning, and selects corresponding prefix from the described prefix information that wherein carries.
As a preferred version of this method, further make client device preserve the priority of this client device operable operator sign and/or service identification; After step 24, further comprise:
Step 25: client device is further selected prefix based on the priority of this client device operable operator sign and/or service identification from the selected prefix of step 24.
As another preferred version of this method, further in provider edge equipment, preserve the priority of the prefix of this edge device support; In step 22, described provider edge equipment is used for making up the priority information that the prefix information that returns to described client device also comprises prefix; After step 24 or step 25, further comprise:
Step 26: client device is further selected prefix based on the priority information of the entrained prefix of the described advertisement of returning from step 24 or the selected prefix of step 25.
In step 21, client device carries operator's sign and/or the service identification that this client device can use or wish to use by increase an option in router request message; In step 23, provider edge equipment carries the prefix information that returns to described client device by increase an option in router advertisement message.
The invention provides a kind of provider edge equipment of realizing above-mentioned first method, described provider edge equipment comprises:
Operator's memory cell, described operator memory cell are used to preserve operator's sign and/or service identification, the prefix of this provider edge equipment support and the corresponding relation between described operator sign and/or service identification and the described prefix that this provider edge equipment is supported;
The first advertisement construction unit, prefix that operator's sign that this provider edge equipment that the described first advertisement construction unit is used to utilize operator's memory cell to be preserved is supported and/or service identification, this provider edge equipment are supported and the corresponding relation between described operator sign and/or service identification and the described prefix, structure will advertisement on network prefix information;
The advertisement that the first advertisement transmitting element, the described first advertisement transmitting element are used for having comprised the prefix information of first advertisement construction unit structure sends.
As a preferred version, described operator memory cell is further used for preserving the priority information of the prefix that provider edge equipment supports; The described first advertisement construction unit is further used for obtaining from described operator memory cell the priority information of described prefix, be used to make up will advertisement on network prefix information.
The present invention correspondingly provides a kind of client device of realizing above-mentioned first method, and described client device comprises:
Client stores unit, described client stores unit are used to preserve this client device operable operator sign and/or service identification;
The first advertisement receiving element, the described first advertisement receiving element is used to receive the advertisement that comprises prefix information;
The first prefix selected cell, the described first prefix selected cell is used for identifying and/or service identification from obtain the operator of wherein carrying from the advertisement of the first advertisement receiving element, determine wherein this client device operable operator sign and/or service identification, and then from the prefix information that described advertisement is carried, select corresponding prefix.
As a preferred version, described client stores unit also is used to preserve the priority of this client device operable operator sign and/or service identification.Described client device further comprises:
The first sign priority selected cell, the described first sign priority selected cell is used for preserving based on the client stores unit on the selection result basis of the first prefix selected cell the operable operator of this client device identifies and/or the priority of service identification is further selected prefix.
As another preferred version, described client device further comprises:
The first prefix priority selected cell, the described first prefix priority selected cell is used for from obtain the priority of the prefix of wherein carrying from the advertisement of the first advertisement receiving element, and the priority based on described prefix is further selected prefix on the selection result basis of the first prefix selected cell, perhaps consider the priority of operator's sign and/or service identification earlier, when considering the priority of prefix again, on the selection result basis of the first sign priority selected cell, further select prefix based on the priority of described prefix at needs.
The present invention also provides a kind of provider edge equipment of realizing above-mentioned second method, and described provider edge equipment comprises:
Operator's memory cell, described operator memory cell are used to preserve operator's sign and/or service identification, the prefix of this provider edge equipment support and the corresponding relation between described operator sign and/or service identification and the described prefix that this provider edge equipment is supported;
The request receiving element, the described request receiving element is used to receive the request to prefix information;
Requesting processing, the described request processing unit is used for identifying and/or service identification from obtain the operator of wherein carrying from the request of receiving element, operator's sign of this edge device support of being preserved according to operator's memory cell and/or service identification therefrom obtain operator's sign and/or the service identification that at least one this edge device is supported, and obtain the prefix of operator's sign that described at least one this edge device supports and/or service identification correspondence and the operator's sign that described at least one this edge device is supported and/or the corresponding relation of service identification and described prefix from operator's memory cell;
The second advertisement construction unit, the described second advertisement construction unit is used to utilize operator's sign of resulting described at least one this provider edge equipment support of requesting processing and/or the corresponding relation between service identification and prefix and described operator sign and/or service identification and the described prefix, makes up the prefix information that is used for advertisement;
The advertisement that the second advertisement transmitting element, the described second advertisement transmitting element are used for having comprised the prefix information of second advertisement construction unit structure returns to described client device.
As a preferred version, described operator memory cell is further used for preserving the priority information of the prefix that provider edge equipment supports; The described request processing unit is further used for being used to make up the prefix information that will return to described client device from the priority information of the prefix of operator's sign of described at least one this edge device support of described operator memory cell acquisition and/or service identification correspondence.
The present invention correspondingly provides a kind of client device of realizing above-mentioned second method, and described client device comprises:
Client stores unit, described client stores unit are used to preserve this client device operable operator sign and/or service identification;
The operable operator of this client device that request construction unit, described request construction unit are used to utilize the client stores unit to be preserved identifies and/or service identification, makes up the request that is used for prefix information;
Request transmitting unit, described request transmitting element are used for the request that the request construction unit builds is sent;
The second advertisement receiving element, the described second advertisement receiving element is used to receive the advertisement that comprises prefix information;
The second prefix selected cell, the described second prefix selected cell are used for identifying and/or service identification from obtain the operator of wherein carrying from the advertisement of the second advertisement receiving element, and then select corresponding prefix from the prefix information that described advertisement is carried.
As a preferred version, described client stores unit is further used for preserving the priority of this client device operable operator sign and/or service identification; Described client device further comprises:
The second sign priority selected cell, the described second sign priority selected cell is used for preserving based on the client stores unit on the selection result basis of the second prefix selected cell the operable operator of this client device identifies and/or the priority of service identification is further selected prefix.
As another preferred version, described client device further comprises:
The second prefix priority selected cell, the described second prefix priority selected cell is used for from obtain the priority of the prefix of wherein carrying from the advertisement of receiving element, and the priority based on described prefix is further selected prefix on the selection result basis of the second prefix selected cell, perhaps consider the priority of operator's sign and/or service identification earlier, when considering the priority of prefix again, on the selection result basis of the second sign priority selected cell, further select prefix based on the priority of described prefix at needs.According to said method of the present invention and equipment, client device can dynamically be selected corresponding prefix according to operator and/or professional sign, and then generates complete IP address and be used for communication.This can be avoided occurring client device and select the improper unnecessary many places situation that causes because of prefix, makes client device insert operator and/or the business of wanting effectively quickly, also can make address resource obtain better utilization.
Description of drawings
Embodiment shown in reference to the accompanying drawings describes the present invention in detail below.Wherein:
Fig. 1 shows the example of the network environment that has a plurality of operators in the prior art;
Fig. 2 shows the message flow chart of first embodiment of the invention;
Fig. 3 has provided the provider edge equipment schematic diagram of first embodiment of the invention;
Fig. 4 has provided the client device schematic diagram of first embodiment of the invention;
Fig. 5 shows the message flow chart of second embodiment of the invention;
Fig. 6 has provided the provider edge equipment schematic diagram of second embodiment of the invention;
Fig. 7 has provided the client device schematic diagram of second embodiment of the invention;
Fig. 8 shows the network environment of third embodiment of the invention.
Embodiment
Describe the present invention below in conjunction with specific embodiment.
In first embodiment of the invention shown in Figure 2, need set in advance operator's sign and/or service identification.Described operator sign is used for having the situation inferior segment branch operator of a plurality of operators.Described service identification is used for providing in operator distinguishes each business under the situation of multiple business.
At operator's sign that disposes and preserve this edge device support on the provider edge equipment and/or the corresponding relation between service identification and the prefix.Can or directly in provider edge equipment, be configured and preserve by for example oam (OAM) system.
Client device can perhaps be known the relevant information of this client device operable operator sign and/or service identification by the mode that directly disposes from the access control process, and preserves the set of described sign.
In the step 11, the relevant information of the prefix that this edge device of provider edge equipment advertisement is supported, described relevant information comprise prefix that operator's sign that this edge device is supported and/or service identification, this edge device are supported and the corresponding relation between described operator sign and/or service identification and the described prefix.
Usually, provider edge equipment can periodically carry out described advertisement in the mode of broadcasting on network.
Step 12: when needs obtain prefix, client device is based on this client device operable operator sign and/or service identification, operator's sign and/or the pairing prefix of service identification selecting this client device to use or wish to use from the relevant information of the prefix of the described advertisement that receives are used to generate sufficient address to insert corresponding carrier network and/or business.
So-called this client device wishes that the operator's sign and/or the service identification that use are meant one or several operator's sign and/or service identification of selecting from this client device operable operator sign and/or service identification.
As a preferred version, the priority of this client device operable operator sign and/or service identification can also be set, and be kept in the client device.Client device can perhaps obtain from the access control process by the mode by directly disposing, and mode such as perhaps obtain from the message of the web advertisement is known the relevant information of described priority.
In this preferred version, after step 12, further comprise:
Step 13: client device is further selected prefix based on the priority of this client device operable operator sign and/or service identification from the prefix that step 12 is selected.
As another preferred version, can also dispose the priority of the prefix of provider edge equipment support, and be kept in the provider edge equipment.In this case, the priority information that further comprises prefix in the relevant information of the prefix of step 11 provider edge equipment institute advertisement.Client device then further comprises after step 12:
Step 14: client device is further selected prefix based on the priority information of the described prefix of provider edge equipment advertisement from the selected prefix of step 12.
These two preferred versions also can combine use, and promptly client device is considered the priority of operator's sign and/or service identification earlier, consider the priority of prefix again.Just after client device execution in step 13, further from the selected prefix of step 13, further select prefix.
With a concrete example said process is described below.Suppose that ISP1 provides the voice and video business in the network with two ISP1 of operator and ISP2, ISP2 provides speech business.Then operator's sign separately and service identification, prefix and the corresponding relation between them of configuration and preservation in the edge device of ISP1 and ISP2 are distinguished as shown in Table 1 and Table 2.
Table 1
| Operator's sign and service identification (Service-Name) | Prefix (Prefix) |
| Voice.ISP1 | Prefix-A |
| Video.ISP1 | Prefix-B |
Table 2
| Operator's sign and service identification (Service-Name) | Prefix (Prefix) |
| Voice.ISP2 | Prefix-C |
Need to prove that the setting of above-mentioned operator sign and service identification is just as example.In fact, operator's sign and service identification can specifically be set according to the difference of concrete network scenario.For example, provide under the situation of multiple business an operator, can be with for example Voice, Video, Internet etc. as the sign of different business; Have under the situation of a plurality of operators, can be with for example ISP1, ISP2, ISP3 etc. as the sign of different operators; Have under the situation that a plurality of operators and operator provide multiple business, can identify and service identification with operator, for example Voice.ISP1, Video.ISP1, Voice.ISP2, Video.ISP3, Internet.ISP3 distinguish the different business that different operators provides.
Suppose the user that a client device is ISP1 and can use the voice and video business that it preserves the set Voice.ISP1 and the Video.ISP1 of this client device operable operator sign and service identification.Need to prove that the present invention is applicable to that also client is the user's of the ISP1 of operator and ISP2 situation simultaneously, but for simplicity, below only is that the user of the ISPI of operator is that example is described with the client.
In real network, can be by the existing router advertisement message of IETF RFC2461 being expanded the function of the relevant information of performing step 11 described advertisement prefixes.Existing router advertisement message portability prefix information option, as example, the present invention further increases the business option of form as shown in table 3 in existing router advertisement message.
Table 3
Wherein,
Type (Type): the identifier of one 8 bit is used to identify the type of described business option;
Length (Length): the integer of one 8 bit is used to indicate the length of described business option;
Sequence number (SN): the integer of one 16 bit is used for indicating the sequence number of prefix in the prefix information option tabulation;
Priority (Priority): the integer of one 16 bit, being used to indicate sequence number is the priority of the prefix of SN;
Keep (Reserved): the reserved field of one 16 bit;
Operator's sign/service identification (Service-Name): a character string, being used to indicate with sequence number is corresponding operator's sign and/or the service identification of prefix of SN.
The router advertisement message RA1 that the edge device of ISP1 sends comprises two business options, has wherein carried Voice.ISP1 and Video.ISP1 in operator's sign/service identification field respectively, has carried the corresponding relation of Voice.ISP1 and Video.ISP1 and prefix Prefix-A and Prefix-B at sequence number field.The router advertisement message RA2 that the edge device of ISP2 sends comprises a business option, wherein carried Voice.ISP2 in operator's sign/service identification field, carried the corresponding relation of Voice.ISP2 and prefix Prefix-C at sequence number field.
Client device is received RA1 and RA2.When needs obtain prefix, client device is according to the operable operator of this client device sign and service identification Voice.ISP1 and Video.ISP1, selects Voice.ISP1 and Video.ISP1 among entrained Voice.ISP1, Video.ISP1 of operator's sign/service identification field and the Voice.ISP2 from the business option of RA1 and RA2.Obtain the sequence number of the prefix of Voice.ISP1 and Video.ISP1 correspondence respectively according to the sequence number field of the business option of RA1, and then from the prefix information option of RA1, obtain concrete prefix Prefix-A and Prefix-B, be used to generate complete IP address to insert the voice and video business of ISP1.
If the priority that is provided with Voice.ISP1 for client device is higher than the priority of Video.ISP1, perhaps this moment, the user wanted preferably to use speech business, and then client device further selects Prefix-A as preferred prefix from prefix Prefix-A and Prefix-B.The selection of the prefix that the priority relevant with operator be optimized also can be set similarly.The client device that is arranged so that of the preference relevant with operator and/or business can insert desirable carrier network of user and/or business accurately and quickly according to user's setting.
In addition, operator might be the more than one network segment of business configuration, is presented as the corresponding more than one prefix of a service identification, and for example, ISP1 has also disposed Prefix-D for Voice.ISP1.In this case, ISP1 can further dispose the priority of prefix, and the priority of the priority field of the business option by RA1 indication prefix.Client device is according to the indicated priority of priority field, and high one of selecting priority is used to generate complete IP address from the Prefix-A that obtained simultaneously by Voice.ISP1 and Prefix-D.This mechanism is convenient to operator's configuration network address resource neatly when traffic carrying capacity changes, and miscellaneous service is control effectively.
Provider edge equipment of the present invention can be by for example BAS Broadband Access Server (Broadband Remote AccessServer, be called for short BRAS), router, Wireless Local Area Network Gateway, GGSN (Gate GPRS SupportingNode is called for short GGSN) wait layer 3 equipment that are arranged on the carrier network edge to come specific implementation.Fig. 3 has provided the provider edge equipment schematic diagram of realizing first embodiment of the invention.
Described provider edge equipment comprises operator's memory cell, the first advertisement construction unit and the first advertisement transmitting element.Wherein, described operator memory cell is used to preserve pre-configured information, the prefix that the operator's sign supported as this provider edge equipment and/or service identification, this provider edge equipment are supported and as described in operator's sign and/or service identification and as described in corresponding relation between the prefix; The described first advertisement construction unit is used to the information of utilizing operator's memory cell to be preserved, the prefix that the operator's sign supported as this provider edge equipment and/or service identification, this provider edge equipment are supported and as described in operator's sign and/or service identification and as described in corresponding relation between the prefix, structure will be on network the relevant information of the prefix of advertisement; The advertisement information that the described first advertisement transmitting element is used for having comprised the prefix information of first advertisement construction unit structure sends.
In addition, if further disposed the priority of the prefix that provider edge equipment supports, then correspondingly, described operator memory cell also is used to preserve the priority information of the prefix that provider edge equipment supports.In this case, the described first advertisement construction unit also is used for obtaining from described operator memory cell the priority information of described prefix, be used to make up will be on network the relevant information of the prefix of advertisement.
For realizing the method for first embodiment of the invention, also need corresponding client device to cooperate with provider edge equipment shown in Figure 3.Client device of the present invention can be based on the user terminal of IP, as main frame, VoIP (Voice over IP) phone, set-top box (STB), also can be that client's side joint is gone into layer 3 equipment in the network, as router, and user gateway.Fig. 4 has provided the client device schematic diagram of realizing first embodiment of the invention.
Described client device comprises client stores unit, the first advertisement receiving element and the first prefix selected cell.Wherein, described client stores unit be used to preserve know in advance, this client device operable operator sign and/or service identification; The described first advertisement receiving element is used to receive the advertisement information from relevant information provider edge equipment, that comprise prefix; The described first prefix selected cell is used for obtaining operator's sign and/or the service identification that wherein carries from the advertisement information from the first advertisement receiving element, therefrom determine this client device operable operator sign and/or service identification, and then from the relevant information of the prefix that receives, select corresponding prefix, be used to generate complete IP address.
If the priority of this client device operable operator sign and/or service identification further is set for client device, then described client stores unit also is used to preserve the priority of this client device operable operator sign and/or service identification.In this case, described client device also comprises the first sign priority selected cell, and the operable operator of this client device that is used for preserving based on the client stores unit on the selection result basis of the first prefix selected cell identifies and/or the priority of service identification is further selected prefix.
If client device also needs to consider the priority of prefix when selecting prefix, then described client device further comprises the first prefix priority selected cell, be used for obtaining the priority of the prefix of wherein carrying from advertisement information from the first advertisement receiving element, and the priority based on described prefix is further selected prefix on the selection result basis of the first prefix selected cell, perhaps consider the priority of operator's sign and/or service identification earlier at needs, when considering the priority of prefix again, on the selection result basis of the first sign priority selected cell, further select prefix based on the priority of described prefix.
Second embodiment of the invention shown in Figure 5 has embodied client device initiatively obtains prefix from carrier network situation.In network, this situation can coexist with the situation of first embodiment.
Second embodiment is the same with aforementioned first embodiment to need the setting of being correlated with in advance, concrete identical with step 11 description before among first embodiment, repeats no more herein.
Step 21: client device sends request, and described request carries operator's sign and/or the service identification that this client device can use or wish to use, to obtain corresponding prefix information from provider edge equipment.
Step 22: provider edge equipment receives described request, and operator's sign and/or the service identification of selecting at least one this edge device to support in the operator of carrying from described request sign and/or the service identification.Then, operator's sign of preserving according to this provider edge equipment and/or the corresponding relation between service identification and the prefix obtain operator's sign and/or the corresponding prefix of service identification supported with selected at least one this edge device.Utilize the corresponding relation between operator's sign that operator's sign that described at least one this edge device supports and/or service identification and corresponding prefix thereof and described at least one this edge device support and/or the service identification prefix corresponding with it, structure returns to the prefix information of described client device.
Step 23: provider edge equipment returns advertisement to described client device, wherein comprises the prefix information that step 22 makes up.
Step 24: client device receives the advertisement of returning, and selects corresponding prefix from the described prefix information that wherein comprises, and is used to generate sufficient address to insert corresponding carrier network and/or business.
A preferred version of present embodiment is the priority of this client device operable operator sign and/or service identification can further be set, and be kept in the client device.In this case, after step 24, further comprise:
Step 25: client device is further selected prefix based on the priority of this client device operable operator sign and/or service identification from the prefix that step 24 is selected.
Another preferred version of present embodiment is can further dispose the priority of the prefix of provider edge equipment support, and be kept in the provider edge equipment.In this case, provider edge equipment is used for making up the priority information that the prefix information that returns to described client device also comprises prefix in the step 22.Provider edge equipment further comprises the priority information of prefix in the step 23 in the prefix information that described client device returns.Client device then further comprises after step 24:
Step 26: client device is further selected prefix based on the priority information of the entrained prefix of the described advertisement of returning from the selected prefix of step 24.
These two preferred versions also can combine use, and promptly client device is considered the priority of operator's sign and/or service identification earlier, consider the priority of prefix again.Just after client device execution in step 25, further from the selected prefix of step 25, further select prefix.
With a concrete example said process is described below.This example adopts identical the setting in advance of concrete example with first embodiment.Just client device active this moment is to the edge device request prefix information of ISP1.
Similarly, the request that described client device sends can be by expanding and realize the existing router request message of IETF RFC2461 (Router Solicitation Message is called for short RS).As example, the present invention increases the business option of form as shown in table 4 in existing router request message:
Table 4
Wherein,
Type (Type): the identifier of one 8 bit is used to identify the type of described business option;
Length (Length): the integer of one 8 bit is used to indicate the length of described business option;
Sequence number (SN): the integer of one 16 bit is used for indicating the sequence number of this business option at request message;
Priority (Priority): the integer of one 16 bit is used for indicating the operator's sign of this business option and/or the priority of service identification;
Keep (Reserved): the reserved field of one 16 bit;
Operator's sign/service identification (Service-Name) a: character string, the operator's sign and/or the service identification that are used to indicate client device to use or wish to use.
Client device sends request RS, operator's sign/service identification field of business option therein carries this client device operable operator sign and service identification such as Voice.ISP1 and Video.ISP1, obtains corresponding prefix information with the edge device from ISP1.If client only wants to use speech business, RS also can only carry the business option that operator's sign/service identification is Voice.ISP1.Below be that example describes only with the previous case.
The edge device of ISP1 receives RS, and the operator's sign and service identification, i.e. Voice.ISP1 and the Video.ISP1 that select the ISP1 edge device to support Voice.ISP1 that carries from RS and the Video.ISP1.Then, operator's sign of being preserved according to the ISP1 edge device and the corresponding relation between service identification and the prefix obtain corresponding with Voice.ISP1 and Video.ISP1 respectively prefix Prefix-A and Prefix-B.
Equally, provider edge equipment can adopt the router advertisement message RA after the IETF RFC2461 expansion is returned prefix information to client, and its form is identical with the concrete example of first embodiment.The edge device of ISP1 is carried on the operator that obtains sign and service identification Voice.ISP1 and Video.ISP1 and prefix Prefix-A and Prefix-B respectively in the business option and prefix information option of RA, and the sequence number field that utilizes business option indicates the corresponding relation of Voice.ISP1 and Prefix-A and the corresponding relation of Video.ISP1 and Prefix-B respectively, makes up the router advertisement message RA that obtains returning to described client device thus.
The edge device of ISP1 returns the router advertisement message RA that step 22 makes up to described client device, has wherein comprised two business options that correspond respectively to Voice.ISP1 and Video.ISP1 and has carried Prefix-A and the prefix information option of Prefix-B.
Client device receives the router advertisement message RA that ISP1 returns, and from prefix information option, obtain corresponding prefix Prefix-A and Prefix-B according to the corresponding relation of the indication of business option wherein, be used to generate complete IP address to insert the voice and video business of ISP1.
Two preferred versions of second embodiment are identical with two preferred version principles described in first embodiment, no longer describe in detail herein.
Fig. 6 has provided the provider edge equipment schematic diagram of realizing second embodiment of the invention.
Described provider edge equipment comprises operator's memory cell, request receiving element, requesting processing, the second advertisement construction unit and the second advertisement transmitting element.Wherein, described operator memory cell is used to preserve prefix that operator's sign that this pre-configured provider edge equipment supports and/or service identification, this provider edge equipment support and the corresponding relation between described operator sign and/or service identification and the described prefix; The described request receiving element is used to receive from request message client device, the request prefix information; The described request processing unit, be used for obtaining operator's sign and/or the service identification that wherein carries from request message from receiving element, operator's sign of this edge device support of being preserved according to operator's memory cell and/or service identification therefrom obtain operator's sign and/or the service identification that at least one this edge device is supported, and obtain the operator's sign that described at least one this edge device supports and/or the information of service identification correspondence from operator's memory cell, comprise the operator's sign that prefix that it is corresponding and described at least one this edge device are supported and/or the corresponding relation of service identification and described prefix; The described second advertisement construction unit, be used to utilize the resulting information of requesting processing, operator's sign of at least one this provider edge equipment support and/or the corresponding relation between service identification and prefix and described operator sign and/or service identification and the described prefix make up the advertisement information that is used for the advertisement prefix information as described; The described second advertisement transmitting element is used for second advertisement construction unit advertisement information that build, that comprised the relevant information of prefix is returned to described client device.
In addition, if further dispose the priority of the prefix that provider edge equipment supports, then correspondingly, the described operator memory cell of provider edge equipment is further used for preserving the priority information of the prefix that provider edge equipment supports.In this case, the described request processing unit also comprises the priority information of the prefix that it is corresponding from the information of described operator memory cell operator that obtain, described at least one this edge device support sign and/or service identification correspondence, be used to make up will advertisement on network prefix information.
The corresponding client device of realization second embodiment of the invention as shown in Figure 7.Described client device comprises client stores unit, request construction unit, request transmitting unit, the second advertisement receiving element and the second prefix selected cell.Wherein, described client stores unit be used to preserve know in advance, this client device operable operator sign and/or service identification; The described request construction unit is used to the information of utilizing the client stores unit to be preserved, as in this client device operable operator sign and/or the service identification one or several, makes up the request message that is used to ask prefix information; The described request transmitting element is used for the described request message that the request construction unit builds is sent; The described second advertisement receiving element is used to receive that provider edge equipment returns, as to comprise prefix information advertisement information; The described second prefix selected cell is used for obtaining operator's sign and/or the service identification that wherein carries from the advertisement information from the second advertisement receiving element, and then selects corresponding prefix from the prefix information that receives, and is used to generate complete IP address.
If the priority of this client device operable operator sign and/or service identification further is set for client device, then described client stores unit is further used for preserving the priority of this client device operable operator sign and/or service identification.In this case, described client device further comprises the second sign priority selected cell, and the operable operator of this client device that is used for preserving based on the client stores unit on the selection result basis of the second prefix selected cell identifies and/or the priority of service identification is further selected prefix.
If client device need be considered the priority of prefix when selecting prefix, then described client device further comprises the second prefix priority selected cell, be used for from obtain the priority of the prefix of wherein carrying from the advertising message of receiving element, and the priority based on described prefix is further selected prefix on the selection result basis of the second prefix selected cell, perhaps consider the priority of operator's sign and/or service identification earlier at needs, when considering the priority of prefix again, on the selection result basis of the second sign priority selected cell, further select prefix based on the priority of described prefix.
In order to understand the present invention better, in network, dynamically select the process of prefix with one the 3rd embodiment explanation more below with access service with a plurality of operators and multiple business.Fig. 8 shows the network environment of the third embodiment of the present invention.Client device voip phone, set-top box, main frame are connected on layer 3 edge device of ISP1 and ISP2 via customer premises equipment, CPE and access and multiplexing device.Layer 3 edge device of ISP1 link to each other with the network of network that speech business is provided and Internet service, and layer 3 edge device of ISP2 link to each other with the network of network that video traffic is provided and Internet service.
In third embodiment of the invention shown in Figure 8, the ISP1 of operator provides speech business and Internet service, and the ISP2 of operator provides video traffic and Internet service.ISP1 and ISP2 separately Broadband Remote Access Server BRAS1 and BRAS2 operator's sign of having preserved each self-supporting and service identification, prefix with and corresponding relation, respectively shown in table 5 and table 6.
Table 5
| Operator's sign/service identification (Service-Name) | Prefix (Prefix) |
| Voice.ISP1 | Prefix-A |
| Internet.ISP1 | Prefix-B |
Table 6
| Operator's sign/service identification (Service-Name) | Prefix (Prefix) |
| Video.ISP2 | Prefix-C |
| Internet.ISP2 | Prefix-D |
In this embodiment, be that example is described still with foregoing business option based on IETF RFC2461 router request message (RS) and router advertisement message (RA) expansion.
The speech business of voip phone access carrier ISP1 under the situation of not having layer 2 access control, service selection is finished by static configuration; The video traffic of set-top box access carrier ISP2 under the situation of not having layer 2 access control, service selection is also finished by static configuration; Internet service and the video traffic of main frame access carrier ISP2, and adopt IEEE802.1X to carry out layer 2 access control and dynamic service selection.
According to the present invention, the concrete course of work of this embodiment is as described below.
For voip phone:
When voip phone sends router request message RS1, in this message, insert a business option, the operator's sign/service identification in this business option is Voice.ISP1.When the BRAS1 of ISP1 receives RS1, just send a router advertisement message RA1 to voip phone with a prefix option and a business option, wherein, the prefix in the prefix option is Prefix-A, and the operator's sign/service identification in the business option is Voice.ISP1.When the BRAS2 of ISP2 receives RS1, will abandon RS1, because it does not support this business.
When voip phone received a router advertisement message, it only used corresponding to operator's sign/service identification to the prefix of Voice.ISP1 as the On-Link prefix and be used for address configuration.If do not exist in router advertisement message corresponding to operator's sign/service identification is the prefix of Voice.ISP1, and voip phone will abandon this router advertisement message so.
For set-top box:
When set-top box sends router request message RS2, in this message, insert a business option, the operator's sign/service identification in this business option is Video.ISP2.When the BRAS1 of ISP1 receives RS2, will abandon RS2 acquiescently, because it does not support this business.When the BRAS2 of ISP2 receives RS2, just send a router advertisement message RA2 to set-top box with a prefix option and a business option, wherein, the prefix in the prefix option is Prefix-C, and the operator's sign/service identification in the business option is Voice.ISP2.
When set-top box received a router advertisement message, it only used corresponding to operator's sign/service identification to the prefix of Voice.ISP2 as the On-Link prefix and be used for address configuration.If do not exist in router advertisement message corresponding to operator's sign/service identification is the prefix of Voice.ISP2, and set-top box will abandon this router advertisement message so.
For main frame:
Successfully by before the IEEE802.1X access authentication, it abandons all router advertisement message at main frame.
When host-initiated IEEE802.1X access authentication, by keyboard from dialog box input Video.ISP2 and Internet.ISP2 with a part as the identification (IDENTITY) of extended authentication agreement (EAP) message.This is used to access authentication and dynamic service is selected.Main frame is stored the title of these two business with identical priority in its service lists.
By after the IEEE802.1X access authentication, the host-initiated automatic address disposes successfully.
When main frame sends router request message RS3, in this message, insert two business options, operator's sign/service identification is respectively Video.ISP2 and Internet.ISP2.When the BRAS1 of ISP1 receives RS3, will abandon RS3, because it does not support this business.When the BRAS2 of ISP2 receives RS3, just send a router advertisement message RA3 to main frame with two prefix options and two business options, wherein, prefix in the prefix option is respectively Prefix-C and Prefix-D, and the operator's sign/service identification in two business options is respectively Video.ISP2 and Internet.ISP2.
When main frame receives a router advertisement message, its uses the prefix that is respectively Video.ISP2 and Internet.ISP2 corresponding to operator's sign/service identification as the On-Link prefix and be used for address configuration, thus two addresses of Sheng Chenging and be respectively applied for Video and the Internet business that ISP2 provides.If do not exist in router advertisement message corresponding to operator's sign/service identification is the prefix of Video.ISP2 or Internet.ISP2, and main frame will abandon this router advertisement message so.
BRAS1 for ISP1:
Initiatively send in client under the situation of router request message, BRAS1 handles router request message as previously mentioned.In addition, BRAS1 also can periodically send router advertisement message.At this moment, BRAS1 advertisement its prefix Prefix-A and Prefix-B, and in the router advertisement message relevant with Prefix-B, insert two business options that operator's sign/service identification is respectively Voice.ISP1 and Internet.ISP1 respectively with prefix Prefix-A.
BRAS2 for ISP2:
Initiatively send in client under the situation of router request message, BRAS2 handles router request message as previously mentioned.In addition, BRAS2 also can periodically send router advertisement message.At this moment, BRAS2 advertisement its prefix Prefix-C and Prefix-D, and in the router advertisement message relevant with Prefix-D, insert two business options that operator's sign/service identification is respectively Video.ISP2 and Internet.ISP2 respectively with prefix Prefix-C.
By method and apparatus of the present invention, provider edge equipment and dynamically exchange and operator and/or professional relevant information and IP address prefix and relevant operator and/or professional corresponding relation of client device.Carry out the selection of address prefix based on these information, can avoid client device to select the improper communication failure that causes, also be convenient to operator's configuration network address resource and miscellaneous service control effectively neatly simultaneously because of prefix.
Claims (18)
1. method of obtaining internet protocol address prefixing, it is characterized in that, set in advance and be used to distinguish operator's sign of operator and/or be used to distinguish each professional service identification that an operator is provided, in provider edge equipment, preserve operator's sign of this edge device support and/or the corresponding relation between service identification and the prefix, in client device, preserve this client device operable operator sign and/or service identification;
This method comprises:
Step 11: the prefix information that this edge device of provider edge equipment advertisement is supported, described prefix information comprise prefix that operator's sign that this edge device is supported and/or service identification, this edge device are supported and the corresponding relation between described operator sign and/or service identification and the described prefix;
Step 12: when needs obtain prefix, client device is based on the operable operator of this client device sign and/or service identification, operator's sign and/or the pairing prefix of service identification selecting this client device to use or wish to use from the prefix information of the described advertisement that receives.
2. the method for claim 1 is characterized in that, further makes client device preserve the priority of this client device operable operator sign and/or service identification;
After step 12, further comprise:
Step 13: client device is further selected prefix based on the priority of this client device operable operator sign and/or service identification from the selected prefix of step 12.
3. method as claimed in claim 1 or 2 is characterized in that, further preserves the priority of the prefix of provider edge equipment support in provider edge equipment;
In step 11, further comprise the priority information of prefix in the described prefix information of provider edge equipment advertisement;
After step 12 or step 13, further comprise:
Step 14: client device is further selected prefix based on the priority information of the described prefix of provider edge equipment advertisement from step 12 or the selected prefix of step 13.
4. the method for claim 1 is characterized in that, in step 11, provider edge equipment carries the prefix information that this edge device is supported by increase an option in router advertisement message.
5. method of obtaining internet protocol address prefixing, it is characterized in that, set in advance and be used to distinguish operator's sign of operator and/or be used to distinguish each professional service identification that an operator is provided, in provider edge equipment, preserve operator's sign of this edge device support and/or the corresponding relation between service identification and the prefix, in client device, preserve this client device operable operator sign and/or service identification;
This method comprises:
Step 21: client device sends request, and described request carries operator's sign and/or the service identification that this client device can use or wish to use, to obtain corresponding prefix information from provider edge equipment;
Step 22: provider edge equipment receives described request, and operator's sign and/or the service identification of selecting at least one this edge device to support in the operator of from described request, carrying sign and/or the service identification, utilize the corresponding relation between operator's sign that operator's sign that described at least one this edge device supports and/or service identification and corresponding prefix thereof and described at least one this edge device support and/or the service identification prefix corresponding with it, structure returns to the prefix information of described client device;
Step 23: provider edge equipment returns advertisement to described client device, and the prefix information that wherein carries comprises the corresponding relation between operator's sign that operator's sign that described at least one this edge device is supported and/or service identification and corresponding prefix and described at least one this edge device thereof are supported and/or the service identification prefix corresponding with it;
Step 24: client device receives the advertisement of returning, and selects corresponding prefix from the described prefix information that wherein carries.
6. method as claimed in claim 5 is characterized in that, further makes client device preserve the priority of this client device operable operator sign and/or service identification;
After step 24, further comprise:
Step 25: client device is further selected prefix based on the priority of this client device operable operator sign and/or service identification from the selected prefix of step 24.
7. as claim 5 or 6 described methods, it is characterized in that, further in provider edge equipment, preserve the priority of the prefix of this edge device support;
In step 22, described provider edge equipment is used for making up the priority information that the prefix information that returns to described client device also comprises prefix;
After step 24 or step 25, further comprise:
Step 26: client device is further selected prefix based on the priority information of the entrained prefix of the described advertisement of returning from step 24 or the selected prefix of step 25.
8. method as claimed in claim 5 is characterized in that, in step 21, client device carries operator's sign and/or the service identification that this client device can use or wish to use by increase an option in router request message; In step 23, provider edge equipment carries the prefix information that returns to described client device by increase an option in router advertisement message.
9. a provider edge equipment of realizing the described method of claim 1 is characterized in that, described provider edge equipment comprises:
Operator's memory cell, described operator memory cell are used to preserve operator's sign and/or service identification, the prefix of this provider edge equipment support and the corresponding relation between described operator sign and/or service identification and the described prefix that this provider edge equipment is supported;
The first advertisement construction unit, prefix that operator's sign that this provider edge equipment that the described first advertisement construction unit is used to utilize operator's memory cell to be preserved is supported and/or service identification, this provider edge equipment are supported and the corresponding relation between described operator sign and/or service identification and the described prefix, structure will advertisement on network prefix information;
The advertisement that the first advertisement transmitting element, the described first advertisement transmitting element are used for having comprised the prefix information of first advertisement construction unit structure sends.
10. provider edge equipment as claimed in claim 9 is characterized in that, described operator memory cell is further used for preserving the priority information of the prefix that provider edge equipment supports;
The described first advertisement construction unit is further used for obtaining from described operator memory cell the priority information of described prefix, be used to make up will advertisement on network prefix information.
11. a client device of realizing the described method of claim 1 is characterized in that, described client device comprises:
Client stores unit, described client stores unit are used to preserve this client device operable operator sign and/or service identification;
The first advertisement receiving element, the described first advertisement receiving element is used to receive the advertisement that comprises prefix information;
The first prefix selected cell, the described first prefix selected cell is used for identifying and/or service identification from obtain the operator of wherein carrying from the advertisement of the first advertisement receiving element, determine wherein this client device operable operator sign and/or service identification, and then from the prefix information that described advertisement is carried, select corresponding prefix.
12. client device as claimed in claim 11 is characterized in that, described client stores unit also is used to preserve the priority of this client device operable operator sign and/or service identification.Described client device further comprises:
The first sign priority selected cell, the described first sign priority selected cell is used for preserving based on the client stores unit on the selection result basis of the first prefix selected cell the operable operator of this client device identifies and/or the priority of service identification is further selected prefix.
13., it is characterized in that described client device further comprises as claim 11 or 12 described client devices:
The first prefix priority selected cell, the described first prefix priority selected cell is used for from obtain the priority of the prefix of wherein carrying from the advertisement of the first advertisement receiving element, and the priority based on described prefix is further selected prefix on the selection result basis of the first prefix selected cell, perhaps consider the priority of operator's sign and/or service identification earlier, when considering the priority of prefix again, on the selection result basis of the first sign priority selected cell, further select prefix based on the priority of described prefix at needs.
14. a provider edge equipment of realizing the described method of claim 5 is characterized in that, described provider edge equipment comprises:
Operator's memory cell, described operator memory cell are used to preserve operator's sign and/or service identification, the prefix of this provider edge equipment support and the corresponding relation between described operator sign and/or service identification and the described prefix that this provider edge equipment is supported;
The request receiving element, the described request receiving element is used to receive the request to prefix information;
Requesting processing, the described request processing unit is used for identifying and/or service identification from obtain the operator of wherein carrying from the request of receiving element, operator's sign of this edge device support of being preserved according to operator's memory cell and/or service identification therefrom obtain operator's sign and/or the service identification that at least one this edge device is supported, and obtain the prefix of operator's sign that described at least one this edge device supports and/or service identification correspondence and the operator's sign that described at least one this edge device is supported and/or the corresponding relation of service identification and described prefix from operator's memory cell;
The second advertisement construction unit, the described second advertisement construction unit is used to utilize operator's sign of resulting described at least one this provider edge equipment support of requesting processing and/or the corresponding relation between service identification and prefix and described operator sign and/or service identification and the described prefix, makes up the prefix information that is used for advertisement;
The advertisement that the second advertisement transmitting element, the described second advertisement transmitting element are used for having comprised the prefix information of second advertisement construction unit structure returns to described client device.
15. provider edge equipment as claimed in claim 14 is characterized in that, described operator memory cell is further used for preserving the priority information of the prefix that provider edge equipment supports;
The described request processing unit is further used for being used to make up the prefix information that will return to described client device from the priority information of the prefix of operator's sign of described at least one this edge device support of described operator memory cell acquisition and/or service identification correspondence.
16. a client device of realizing the described method of claim 5 is characterized in that, described client device comprises:
Client stores unit, described client stores unit are used to preserve this client device operable operator sign and/or service identification;
The operable operator of this client device that request construction unit, described request construction unit are used to utilize the client stores unit to be preserved identifies and/or service identification, makes up the request that is used for prefix information;
Request transmitting unit, described request transmitting element are used for the request that the request construction unit builds is sent;
The second advertisement receiving element, the described second advertisement receiving element is used to receive the advertisement that comprises prefix information;
The second prefix selected cell, the described second prefix selected cell are used for identifying and/or service identification from obtain the operator of wherein carrying from the advertisement of the second advertisement receiving element, and then select corresponding prefix from the prefix information that described advertisement is carried.
17. client device as claimed in claim 16 is characterized in that, described client stores unit is further used for preserving the priority of this client device operable operator sign and/or service identification; Described client device further comprises:
The second sign priority selected cell, the described second sign priority selected cell is used for preserving based on the client stores unit on the selection result basis of the second prefix selected cell the operable operator of this client device identifies and/or the priority of service identification is further selected prefix.
18., it is characterized in that described client device further comprises as claim 16 or 17 described client devices:
The second prefix priority selected cell, the described second prefix priority selected cell is used for from obtain the priority of the prefix of wherein carrying from the advertisement of receiving element, and the priority based on described prefix is further selected prefix on the selection result basis of the second prefix selected cell, perhaps consider the priority of operator's sign and/or service identification earlier, when considering the priority of prefix again, on the selection result basis of the second sign priority selected cell, further select prefix based on the priority of described prefix at needs.
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| CN2007101462703A CN101378340B (en) | 2007-08-31 | 2007-08-31 | Method for obtaining internet protocol address prefixing, operator edge equipment and client terminal equipment |
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| CN2007101462703A CN101378340B (en) | 2007-08-31 | 2007-08-31 | Method for obtaining internet protocol address prefixing, operator edge equipment and client terminal equipment |
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| CN101378340B CN101378340B (en) | 2011-08-24 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255976A (en) * | 2010-05-21 | 2011-11-23 | 华为终端有限公司 | Method for selecting IPv4-IPv6 protocol translation module, apparatus and terminal thereof |
| CN102801826A (en) * | 2012-08-29 | 2012-11-28 | 清华大学 | IPv6 (Internet Protocol Version 6) site multi-homing application method on basis of IPv6 address translation |
| CN105282026A (en) * | 2014-06-23 | 2016-01-27 | 国基电子（上海）有限公司 | Default gateway selecting system and method |
| CN107534692A (en) * | 2015-04-23 | 2018-01-02 | 高通股份有限公司 | Data link interface Internet protocol（IP）Address generates |
| CN109617780A (en) * | 2019-01-29 | 2019-04-12 | 新华三技术有限公司 | Access method, apparatus, terminal device and the machine readable storage medium of network |
-
2007
- 2007-08-31 CN CN2007101462703A patent/CN101378340B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102255976A (en) * | 2010-05-21 | 2011-11-23 | 华为终端有限公司 | Method for selecting IPv4-IPv6 protocol translation module, apparatus and terminal thereof |
| CN102255976B (en) * | 2010-05-21 | 2013-11-06 | 华为终端有限公司 | Method for selecting IPv4-IPv6 protocol translation module, apparatus and terminal thereof |
| CN102801826A (en) * | 2012-08-29 | 2012-11-28 | 清华大学 | IPv6 (Internet Protocol Version 6) site multi-homing application method on basis of IPv6 address translation |
| CN102801826B (en) * | 2012-08-29 | 2014-11-26 | 清华大学 | IPv6 (Internet Protocol Version 6) site multi-homing application method on basis of IPv6 address translation |
| CN105282026A (en) * | 2014-06-23 | 2016-01-27 | 国基电子（上海）有限公司 | Default gateway selecting system and method |
| CN107534692A (en) * | 2015-04-23 | 2018-01-02 | 高通股份有限公司 | Data link interface Internet protocol（IP）Address generates |
| CN109617780A (en) * | 2019-01-29 | 2019-04-12 | 新华三技术有限公司 | Access method, apparatus, terminal device and the machine readable storage medium of network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101378340B (en) | 2011-08-24 |
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