TW201110646A - Cross-layer address mapping method for proxy mobile internet protocal - Google Patents

Abstract

This invention discloses a cross-layer address mapping method for proxy mobile internet protocol (PMIP), capable of performing a fast cross-layer address mapping and resolution over proxy mobile IPv4. The cross-layer address mapping method in proxy mobile internet protocol includes a forwarding process for traffic from internal to external as well as from external to internal. Through this method most of the packets cut through the translation device directly, and there is no need to do any action for translation and re-encapsulation computing and relay, therefore it improves the efficiency of proxy mobile IPv4 (PMIP4) networks.

Description

201110646 VI. Description of the Invention: [Technical Field] The present invention relates to a mobile user agent address cross-layer mapping method, and more particularly to an action user who does not need to perform any relay transfer operation in most cases. The proxy address cross-layer mapping method. [Prior Art] The Internet (Internet) is a network of all kinds of computers in the world, through a regional network around the world and uses a kind of transmission control protocol / Internet Protocol (Transmission Control Pr〇t〇c〇i / internet The 彳 彳 辑 〇 〇 , 简 TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP TCP Communicate with each other. In the current version 4 IP (IP Version 4, IPv4 for short), the 'use of 32-bit length, all the network devices around the world' can be computer, printer, router, Exchange crying! or Γ Γ, equipment. As long as there is a legal unit issued π ^ 士 = f that is enough to be directly referred to as the Internet: the purpose of the data communication; but ιρν4 agreement in the holiday: j network devices are fixed via a wired connection A _ two =: After the development of wireless network technology, the network device can give _, Tianxing wireless data communication. Every action in the network; ^ ^ Advance can continue in the process of _ t = @ So 'wireless action environment must provide mobility management holding 201110646 mobile network derived from the process (Handoff) for wireless lines ^ Conversion problem. The action is changed. The quality will not be money because of the financial crisis. Because the communication product ill mouth # / temporary 狳 矾 受到 受到 受到 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The method of hand is a must. It is completely applicable. Therefore, the 1Pv4 agreement of the 2nd network is not allowed to be read by iPvm-1, and a set of phase is set up, and the Internet Protocol (Mobile IP) is activated.

= No = road environment allows the user to continue to access the resource access on the __ road.目月'J all wireless network technology will be the solution, because M iP is regarded as the ordering officer to the right one to ask the six-IP as the second layer of the network agreement, the virtual bottom, such as it must cooperate Modifying the underlying agreement and t / building W ^ routing leads to the packet header Μ Μ ^ application support poor, handoff delay, etc. L The purpose of the purpose is to make the mobile node _ile to the money (four), The network even has a link to the corresponding point (C〇rrespondent N〇de; CN). When the new _ domain is activated, it will be sent to the local user of the location.

Agent; FA) device requirements - a Jing's transfer to pure address (c_f address; CoA) ' and through it to establish a relationship with the status of the department (Blnding), so that it is sent to the local user agent (Home Agent, η / The device's packet can be encapsulated in the IPTunnel protocol, and the relay is forwarded to the CoA where the mobile node is located to complete the entire handover process. In response to the IPv6 agreement of the next generation Internet, which has been proposed for more than ten years, Mobile IP defines Mobile IPv6 (MIP6) and Mobile IPv4 (MIP4) according to the difference between lPv4 and IPv6 network features and functions. Two major types of agreements; Mobile IPv6 is more streamlined than Mobile IPv4 architecture, and the data transmission is more efficient, authentication and encryption technology is more complete, and can meet a large number of IP address requirements, the main advantages are: the use of Neighbor Discovery (Neighbor Discovery) and Automatic address (Aut0 Configuration) function, cancel FA, use path optimization to solve triangle routing, use secure IP (IPSec) mechanism to meet authentication security and so on. It is generally believed that MIP4 has many defects in the integration of existing IPv4. It is bound to be combined with the powerful functions of IPv6 to obtain a perfect mobile IP service environment. The aforementioned mainstream Mobile IPv4/IPv6 protocol has been pointed out to be quite a problem, the most important of which is the cost of deployment; it is very challenging to integrate complex MIP protocols on existing low-cost mobile client devices. In recent years, another new countermeasure for Proxy Mobile IP (PMIP) has been proposed. This concept divides the Mobile IP method into User Mobile IP (CMIP) and Proxy Mobile IP (Proxy Mobile IP). ; PMIP) two major categories. The aforementioned MIp method is usually referred to as CMIP, and the Client word in CMiP, as described above, represents that the MN itself has the function of Mobile IP, that is, no additional device assistance is required on the network side; in other words, there is network routing. The device does not need to support the MIp protocol to allow the MIP network to operate. However, the pMIp protocol assumes that there is no stack of communication protocols with built-in Mobile IP in _, and it is necessary to rely on the proxy of the network to help. The pr〇Xy Mobility Agent's proxy (Pr0Xy) is a device placed in the network and is responsible for registering and processing other MIP-related operations management transactions on behalf of the MN to the Home Agent (HA) device. This allows you to have MIp 201110646, but also has the ability to move anywhere in the wireless mobile network and its upper-layer applications, and may even not know ίΐν1ΙΡ4Μmoving + °current ΡΜΠ> The specification for 6 has been finalized and the specifications for PMIP4 are still being defined. Where

However, the reservation-generation Ipv6 addressing method will be deployed for another three to five years: even longer, the routing device on the Internet may be completely replaced or upgraded to IPv6. During this transition period, the network users continue The IPv4 protocol is the main one; however, the existing MIp4 environment, without the CMIP4 or PMIP4 method, must inevitably face the existing package of the IPv4 protocol, that is, the problem of insufficient address space, in the CMIP4 environment. If the MN uses the legal positive address ip) 'may be faced with the problem of the network being unable to connect due to the IP address being insufficiently allocated due to the IP address being insufficiently allocated to the new foreign network; and the mobile device It is limited by the computing power, the program storage space, and the communication protocol support capabilities of the operating system, and it is impossible to support the CMIP4 agreement. Especially in the newly defined PMIP4 environment, the MN does not need to replace the CoA after moving to the new foreign network. If the MN uses a legal IP address (Public IP), a data communication session connection (Session Connection) , may face data packets back and forth need to be transferred through the HA relay; and FA, HA devices in the transfer process, complex address table lookup replacement procedures, often cause performance bottlenecks, and derive service quality problems; MN if used The private IP address (Private IP) may face the problem of conflict with the private IP address of other MNs after moving to the new foreign network. In fact, the PMIP4 mobile network cannot use the private IP address ( Private IP) Use of the guest IPv4 address. And no matter what method MN's second and third layer network drivers, still have 7 201110646 = set the corresponding revision to the thief. f know ρΜιρ real, example architecture diagram, please refer to Figure 2, where the access router (Α:= 〇u er 'AR) is the border of the no, line network and wired network ==# _4 is mainly - in (10) The network layer is broadcasted. The k-mechanism' and the user agent that can't provide the service with the private IP address can quickly increase the cross-layer address pair, which can directly, #, s /, and can make the packet of the large knife pass the second action of the proxy device, thereby improving The action agent ΙΡν4= The month will be actively explored by the present invention. In order to solve the problem of the above-mentioned (four) user agent shirt cross-figure method, [invention content] After the network image of the agent, the address of the agent is cross-layered, and needs to be executed; :;:=: generation=; can be directly transferred Action, in the real application, its use == two on the road and shouting the fine domain IPV4=iH Cai (10) its account r address cross-layer mapping method, according to the table and used to transfer the user agent w turn the court package The mobile user agent address receives a packet from an internal network interface to 201110646, including a source nickname; (7) a f-packet description (eg, a packet-layer MAC layer, a ::: layer, and a third) The header content of the layer TCP/UDp layer) is compared with the mobile user agent address comparison table;

(3) If the silk of the step W _ 容不_ at least - the pen record in the pen record coincides, then add - the pen on the packet of the table = 7 to the action user agent address comparison table, according to the source nickname Set the delivery source number of the newly added record' and the original incoming number of the newly added record is ^ (4) ^ The content of the header of the Zhonghai package and the at least one record

One of the contents of the header of the package 兮箬 "Car Recording Chong ^ ^" is randomly assigned an outgoing source nickname to update the ^ table, the recorded source number of the outgoing source nickname packet; and (3)封Package to - external transfer interface. If the header content of the packet conflicts with the action, the packet can be directly sent out by 彳-it 1. If the server does not match the server side更新 Update the necessary information to the header of the packet and the user's proxy address comparison table. The method 2 is sent, and the mobile user agent address is placed across the layer & most of the packets are directly transparent. Without the need to address the replacement operations, re-encapsulation, and relay forwarding at 9 201110646, the efficiency of user agent address mapping and parsing is swayed. The detailed description and implementation of the invention are provided. The method is a pair of embodiments; the t-body embodiment is a mobile user agent address cross-layer procedure for transferring the action to the second axis; the address cross-layer mapping method uses a small-pen record, and each agent address is compared. The table contains the original source nickname of J. Zhang t mesh source address, - 1p source address, - a self-purpose sand here :: =: = the second: First step _ '

The header _ contains the relevant :::: with = in the example 'the first - (four) table _ capacity contains L · H =, - source 1P health, - destination inverse (four) and -? = 110646 then ' Step S102, the action user agent address comparison table is compared and judged according to the content of the header of the first packet, and a cloth-job line is moved, adding =,: its coffee 2 =;; = new Increased - the first-package of the table and the contents of the record to the mobile user agent, the source of the source, and the original source number of the record -_德,目I丨ΰΓ - The first packet is sent to the external network interface: Ji! Set to 〇. ♦ 士 μ — . . 〜 — — — — — — — — — — u u u u u u u u u u u u u u u u u u u u u u u u u u u u u u u u u u The source of the first-package-C 2: the source 1 ρ address, the destination IP of the first packet, the _p-shirt, the source of the nickname of the packet, the source of the 埠 该When the destination bee and the money are not degraded, (4) the content of the first packet is not consistent with the record. Such as rush ^ 'that is, when the table of the first-packages admits to the at least one of the records - the pen axon 'Lai Yu Yu' - sent the number, the foreign = source nickname and fill the line _ household The agent address comparison table in the table of the h foreign court incoming number, and the delivery source nickname is more difficult to the first - packet, the nickname. Alternatively, the implementation of the shot can also be recorded to the bank's other miscellaneous list. t complete the above settings

-C π 201110646 Network sector = after 'also τ execution step, send the first packet to the outside, especially _ Yes, here the step is related to, when the source MAC address of the first packet The source of the record in the branch does not match the address == The source IP of the packet and the source IP address of the record, the destination IP address of the packet and the destination Ip of the record Address, "plant and fresh field outside the wire number (counter source nickname for the number and the original source of the record 埠 岌 source 皋 #ϋ not for the 〇 及 该 该 该 该 该 该 该 该 该When the destination is reported as a woman, (4) is set to #This content conflicts with the record. On the other hand, if the comparison in step S102 is determined to be consistent, then the hair = can travel Suddenly 'Lai Di-Packet Send Correction Network

Then, step S110 can be performed, waiting for the next packet to arrive, so that the next packet can arrive from step _ to step S. Thereby, the internal transfer procedure of the present invention is completed. . On the other hand, as shown in FIG. 1, in this embodiment, the private sequence is forwarded from the outside to the first step S2GG, and the second packet is received from the external network interface, where the second packet can be combined with the first packet structure. similar. In this embodiment, the 'second packet has header content' header content may include - source nickname, a source MAC address, - source JP address, a destination positive address, and 目的地 destination tamper. 12 201110646 Next, step S202 is performed, and the header content of the second packet is compared with the mobile user agent address comparison table. If the content of the header of the second packet does not match any of the at least one record, step S204 is performed to discard the second packet and respond to an error message. It is necessary to pay special attention to the unconformity judgment corresponding to step S204 here.

Means that the source IP address of the second packet and the destination address of any of the records, the destination address of the second packet, the address and the source IP address of the record, the packet If the source nickname and the original source of the record are or if the destination nickname of the second packet does not match the destination nickname of the record, the table is determined to be the second packet. The header content does not match the transcript. ' 么, if the match, that is, when the header content of the second packet and the at least - pen, ', the record of any of the pen-axis, the original record of the record in the table Incoming material 2 = pass 2 to the scale of the county face is G, then the implementation of the step content of the county county Ke Yixin the third package of the table two packets to the __ road interface. Then, in step S212, the other side is sent. If the sentence is judged, the step S21G is executed, and the face number of the first item is updated by the face number of the face of the poem which is not 0. And then step: 13 201110646 S212 The second packet is sent to the internal network boundary - seal == 214, waiting for the next - packet arrives, in order to facilitate the transfer process to step S200. Thereby, the external/examination of the present invention is completed, and FIG. 1 is continued according to the schematic diagram of the network architecture. In the example of the present invention, the secret of the second word of the figure can be used to ensure that the mobile node circle and the corresponding node address are connected. The mobile user agent of the mobile user agent of the present invention executes the leg and cooperates with the user agent device to implement the user agent device to install the user agent (HGme Α_, private) and the external agent device (F〇reign Agem, FA), not shown in Figure 2. (4) Cutout: As shown, the mobile agent device is tested as a cross-layer (Cr〇ss L 罔 罔 ° ° 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 应用 应用 应用 应用 应用 应用 应用 应用 应用 应用 应用 应用 应用 应用Connected to the external network interface EXT and the internal network, between the interfaces INT, to correspond to the connection relationship between different mobile nodes (such as mobile node MN dirty, delete 3, discussion 4, etc.) and the external network The mobile agent device PMA is connected to the user agent device in a bridge mode to perform tasks, so the user agent device itself does not occupy any IP address. The default gateway of the mobile agent device PMA also points to the road exit. The routing device AR, and connects to the Internet through the route AR, does not need to point to the user agent device. The user agent device having the function of the present invention does not replace any Π»address block' because the mobile node MN has The external (legal) public Ip 201110646 address is used directly, so the private IP address is not used at all. The same source ip address is used repeatedly, so the internal network benefits are treated as positive: ' All packets will be changed to Ethernet (W 80) or wireless network (Wlreless LAN, 48 〇 2 (1) 48-bit address instead of IP address as the only way to identify; the starting point of this design is 1 User agent device 'for every pass packet must be

The table checks the replacement procedure of the silk source IP and the source ,, and recalculates the packet Che 仏 仏 值 (CheekSum), which consumes a lot of computing resources. In the high load capacity, it may become the traffic under the framework of the present invention. The user agent device, each packet passing through, must still go through the same check procedure, but only a small number of packets need to be converted to its source nickname (the solution is analyzed by the solution method. ), the source ιρ is a permanent retreat without replacement. 'This part does not need to replace the packet of the Ip header content, and does not need to recalculate the packet check code value, nor does it have to repackage the ιρ packet into the MAC packet. Therefore, for the user agent device itself or the router with the user agent function, the computing resources of the user's consumption are relatively reduced. In the high-capacity network, the liver agent device can be close to the network. _, and less than the amount of _. And because there is no need to go through an address replacement procedure, the packet sent by the mobile node MN can already obtain the first-stage _ performance boost before moving The packet sent by the mobile node MN can be directly sent to the corresponding node cn (ie, the destination of the transmission in this embodiment) after the mobile station does not need to go through the procedure of the check-up check and the address replacement. As in the conventional pMIp4 architecture, the local user agent device HA must first be sent back to the local user agent device HA for table lookup and address replacement, so that the performance improvement of the present invention is more significant. The design of the replacement, it needs to be set... 15 201110646 The timing of the change depends on the internal network in the two mobile nodes MN in the same time - the second line to the external network ^ - station corresponding node CN, and use the same service coffee, The internal randomly assigned comer, also happens to be the same (repeated), & must be established after the source of the connection, do the replacement action, re-send the idle nickname generated by the machine, and record In the mobile user agent address table: ΓΓ packet restore corresponding, not to transfer the mapping address is garbled, the source of the source nickname collision (Source p〇rt c〇llisi〇n) occurs theoretically every two stations are connected to the outside Same station Corresponding node c

Between the two, there is only a weak chance of 1/16, but in fact it will be regarded as an increase in the network, or the opportunity to use a specific host frequently (while connecting to a well-known website, there will be more conflicts), but: Tian Er = Network Early Segment (Segment) reached the upper limit of the mobile node, and it is estimated that it does not exceed the 1/256 chance (this is the ideal value, not for all machines are preset by the same - come The condition of the start number of the item), in other words

99% weak connection talks (Sessi〇n) do not need to perform address replacement actions for the data packets to which they belong or return. In the PMIP4 environment, they are also relayed via the local user agent device HA. The transparent mode transmits 'the entire Ip packet' only replaces the source address in the MAC header when passing the proxy device of the present invention and the ip packet is completely unchanged. Referring to FIG. 3, FIG. 3 is a schematic diagram of a mobile user agent packet forwarding procedure according to the present invention. Please - and refer to Figure 2. A packet sent from the internal network MAC address α to the mobile node _ (using IP address A, is also valid on the external network), after the user agent, its packet surface is completely untransmission, directly transmitted ^ The host Y '啰, the domain _ packet is also not replaced, directly penetrated 16 201110646 keep the activity ^1 to the host α (Α); when this talk is still repeated! i i has another internal network host 10,000 (the same as using 1 F face 4 + also to connect with the external network host Y, the pair and the mobile user agent address, so the first 1 | Remember t = the connection with the source nickname al can be γ, , '', and the packet is directly transmitted to the destination host and external replacement action; when the same from the internal host γ attempt to build a third red and The first record conflicts, it will be wrong = (four) up to the correct social machine" and the nickname is replaced by the IP header of the bit user part of the mobile user agent: code =:=:: change, so the • The design of the proxy device itself must be effectively implemented. In the present invention, when the mobile host searches for an external host by using the ARP broadcast packet, the program will replace the face (4) tear agent: ΐ ^ need to further encapsulate the packet The source of the external host in the mac Lc bit If the user agent internal (10) address occupied, and the destination e encountered the original α, so the original internal network of the interrogator host will be a. 17 201110646 line WIf user generation The internal address of the gift is used as the external link It is the internal work, unless the thief package 'only Nabu Department network to do the above transfer', does not allow the internal paste road host to allow them to connect to each other, no matter what mobile node employment The broadcast packet, that is, the mobile node of the internal network does not need to be transferred and the physical connection (physieal (4)) to avoid the error that the mobile node MN detects the address repetitive. Please refer to Figure 4 A comparison diagram of the mobile user agent address comparison table LUTnew and the mobile user agent address comparison table LUTpri in the prior art in the specific embodiment of the present invention. As shown in FIG. 4, the user is compared with the prior art. The agent health table LUTpfi can include the county ιρ address, the destination ΠΜ address, the original source nickname, the destination nickname, the outgoing source positive address, and the delivery source unicorn block, which can be i8 bits in length. Bytes 'The mobile user agent address comparison table LUTnew of the present invention may include the original source IP address, the source mac address, the destination address, the original source nickname, the destination nickname, and the outgoing source nickname. Such as the block, its length can be 22 bits (Bytes) In addition, in the prior art, the action user agent comparison table LUTpri needs to cooperate with the address resolution protocol (Address (10), such as protocol, ARP) address mapping table LUTarp in Figure 4 to operate normally, and the address resolves the iron address. The known LUTarp conforms to the universal address resolution protocol, and its content can include the original source IP address and the source MAC address block, and its length can be 10 bytes. Please refer to Figure 3. During the replacement process, the user agent device will dynamically establish a set of mobile user agent address comparison table 'abbreviated address comparison table' for the purpose of not only allowing subsequent data packets to follow a consistent replacement mode, but also for parsing the returned IP packet, as the basis for the interpretation of the reverse replacement logic, so when the packet is transferred from the inside to the outside, it must first check whether there is a conversation (Sessi〇n) of the packet in the address comparison table, if any Follow the previously assigned source 埠 replacement and transfer, if not, then randomly assign a set of sources ,, add the record in the address comparison table ^ When = package returns from outside , the same as the inspection procedure of the address comparison table, if ^ then reply the source ip and ip address to the original original status and forward it, if i reject the transfer of the packet, and discard (Drop), these are happening In the 'Ip layer (Layer 3) replacement action, #包包 actually sent to the network connection interface: , but need to deal with the third layer (IP) and the second layer of the tie (Bindin illusion, that is, through The address resolution protocol address comparison table 1 ^; 1 ^ and the program, the corresponding MAC address is detected by the IP address, after the package, the packet can be correctly delivered to the destination; because this one is in the third layer of the network The operation of the custom action user agent device, at least two lookup actions during the packet transfer process. The mobile user agent device of the present invention will be dynamically established in the process of forwarding - the group line_house agent device cross-layer health comparison table, referred to as the cross-layer address comparison table, its purpose and function and the known address The table is the same, but the data structure is different. When the packet is transferred from inside to outside, it is necessary to check the cross-layer address to know whether there is a meeting (Sessi〇n) record of the packet, and if so, break it. In the case of existing talks or conflicts, if it is an existing talk, then (4) send 'if the situation occurs, the ship age is matched with a new set of delivery source nicknames, add the record In the cross-layer address comparison table; when the = package returns from the outside to the inside, the sample inspection program through the cross-layer address comparison table, if necessary, it is necessary to judge whether it has been previously replaced according to its recorded content. There is a reply to the source of the source nickname as the original source nickname, and the source

The MAC address is pre-facilitated. If there is no detachment, and the packet is dropped, these are the cross-layer replacement actions that are processed in the Layer 2 layer. When the packet is actually When sending to the network connection interface, it is not necessary to Η 19 201110646 To deal with the third layer (IP) and the second layer (mac) tie problem, the address resolution protocol address comparison table LUTarp can be considered in design. The cross-layer address comparison table is directly integrated into one. As shown in FIG. 4, the conventional address comparison table requires at least 18 Bytes per record to represent the source IP address (32 bits) and the destination IP address (32). Bits), local source nickname (16-bit), destination nickname (16-bit), external source IP address (32-bit), external source nickname (16-bit), a total of six sheds; The ARP address mapping table is also required to represent the correspondence between the local IP address (32 bits) and the MAC address (48 bits). On the other hand, with the design of the cross-layer address comparison table of the present invention, only 16 Bytes are required for each δ record to indicate the source MAC address (48 bits) and the destination IP address (32 bits). Yuan), the original source nickname), the destination nickname (16-bit), the delivery source nickname (16-bit), a total of five blocks; the delivery source nickname block did not occur most of the time In the case of conflict, it is not required to be used (it can be filled in 0x00 silk). In addition, the cross-layer address is directly checked for the C-site address, and the analysis of the second place on the silk In fact, in fact, the main part of the analysis, do not have to deal with the internal network. Therefore, the replacement efficiency of 曰 is higher than that of the conventional address comparison table. Concentric layer: the originator, any address replacement operation, re-encapsulation, and the need to perform the action of the user agent address mapping and analysis of the transfer of the action" and then make clear that through the above implementation of the subject, Riding can be more 20 201110646

The features and spirit of the present invention are described, and the scope of the present invention is not limited by the preferred embodiments disclosed herein. On the contrary, the intention is to cover various modifications and equivalents within the scope of the invention as claimed. 21 201110646 [Simultaneous Description of the Drawings] Figure 1A is a flow chart showing a method of transferring a program from the inside out in accordance with an embodiment of the present invention. Figure 1B is a flow chart showing a method for transferring a program from the outside to the inside in accordance with an embodiment of the present invention. 2 is a schematic diagram of a network architecture in accordance with an embodiment of the present invention. 3 is a schematic diagram of a mobile user agent packet forwarding procedure in accordance with an embodiment of the present invention. Figure 4 depicts a comparison of the mobile user agent address comparison table and the mobile user agent address dragon table in the prior art in one embodiment of the present invention. [Main component symbol description] S100~S214: Step

AR: Routing device CN: Corresponding node _4: Mobile node Internet: Internet INT: Internal network interface MN 'MN1, MN2' MN3, PMA: Mobile agent device EXT: External network interface 22 201110646 LUTarp: Address resolution protocol Address comparison table

twenty three

Claims (1)

201110646, the scope of application for patents: 1. A method for translating the user agent address trans-audio transfer and - from the outside > containing one from the inside to the inside and outside the Qimei number 'its interface receiving - the first packet, the first - Each of the headers of the packet contains a source nickname; (1=^包之物-_行_户代理位(四)=^2)) when any of the records in the header of the first packet matches a comparison table, wherein according to the content of the header, the additional source of the record is nickname n, the new source nickname is set to 〇; the original of the added record, 铮:r 2: ^ =::;r The outgoing source nickname and the = send the first packet to the external network interface. First, - come to the address; 24 2, 201110646 nickname. 3. The cross-layer mapping method of the mobile user agent address as described in claim 2, wherein each record further includes a source address, a source IP address, a destination IP address, and A destination nickname. 4. A fast cross-layer mapping and parsing method for an action user agent address as described in claim 3, wherein in step (a2), when the & source MAC address of the first packet is The #maC address of the record, the source IP address of the first packet, the source IP address of the record, the destination IP address of the first packet, and the destination of the record The positive address, the source nickname of the first packet, the source of the delivery source, the source number of the first packet, the original source nickname of the record, or the first packet If the destination=land number does not match the destination nickname of the record, it is determined that the silk of the first packet does not match the record. 5, ^ application to refine the line 4 of the line _ household agent address fast cross-over and analysis method 'in which in step (four), # the first - the package of the &source; first = stop and any - pen record The source earned the address does not match, and the address of the face and the address of the transfer, the location of the address, the destination address of the first destination, and the destination of the record are located at the destination address, When the first-source nickname matches the original source nickname of the record, the original source nickname of the record of the first source key, and (4) the nickname of the record is found. & 'The 苐 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 封 6 6 6 6 6 6 The internal transfer program includes the following (bl) received from an external network interface - the second packet two steps: a header content containing a destination nickname; a first packet (b2) according to the second packet The header content comparison table is compared; 乂, the 用户 user agent bit (b3) is in step _ when the second packet of the header-pen record is less than the pen record and responds with an error message; And the music-package, 1 if the record of the header of the second packet matches in the step (4), if the record of the header of the second packet of the second record of the second record of the second record is updated, the second The destination number of the header content of the packet is 'and the second packet is shipped to the Lecha network interface. 7. The method of action according to item 6 of the patent application, wherein the second layer of the second packet is mapped: the address, the acid address is as follows: The mobile user agent address cross-layer mapping party, the 'eight-in-one-record entry step-- includes a source c address, a source IP address, a destination IP address, and a destination Tan number. „After the scope of the patent scope, the user agent address address mapping and parsing method, in step (4), when the second packet should come to ^ 26 201110646 MAC address and Ren-Pen, Mzhi County source 眶The address, the source IP address of the second packet, the source positive address of the record, the destination address of the second packet, the destination address of the record, and the second packet The number of the plaque and the second package 、, 'the recorded address of the 5 hai, the current 篦-private-address and the source 该 of the record, the purpose of the package The source of the record is nickname. The content of the header of the destination item number package does not match the record when the destination nickname of the record does not match. 27