CN101510900A - Method for configuring route of mobile terminal in PMIPv4 - Google Patents
Method for configuring route of mobile terminal in PMIPv4 Download PDFInfo
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- CN101510900A CN101510900A CNA2008102403603A CN200810240360A CN101510900A CN 101510900 A CN101510900 A CN 101510900A CN A2008102403603 A CNA2008102403603 A CN A2008102403603A CN 200810240360 A CN200810240360 A CN 200810240360A CN 101510900 A CN101510900 A CN 101510900A
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Abstract
The invention proposes a route collocation method applied to a mobile termination of PMIPv4, and proposes a scheme for the mobile termination to realize an absolute no participation in acting for switching mobile IP process through an adoption of agent ARP at the network end. Not needing to regulate network layout of a current wireless local area network and not needing any alteration or allocation on the current mobile termination, the scheme only needs to have a proper alteration of an agent mobile management end PMA of the network end to lower complexity and switching time lapse of the mobile termination.
Description
Technical field
(Proxy Mobile IPv4, PMIPv4) method for configuring route of middle portable terminal MN (Mobile Node) belongs to networking technology area to the present invention relates to a kind of proxy-mobile IP v4.
Background technology
Mobile IP agreement (mobile IP protocol) provides the mobile management of seamless switching for portable terminal MN, but it needs portable terminal MN to support mobile IP function, if portable terminal is not supported this function, just require network terminal that the mobility support is provided this moment.List of references 1[K.Leung, G Dommety, P.Yegani, K.Chowdhury, " WiMAX Forum/3GPP2 Proxy Mobile IPv4 ", draft-leung-mip4-proxy-mode-07, work in progress, IETF draft, 2008.2] a kind of based on network proxy-mobile IP v4 scheme proposed, introduced and acted on behalf of mobile management end (Proxy Mobile Agent, be abbreviated as PMA), expand the function of Foreign Agent among the mobile IP (Foreign Agent is abbreviated as FA), replace moving registration between portable terminal MN and home agent (Home Agent is abbreviated as HA).Such change makes portable terminal MN no longer participate in mobile registration process.In fact portable terminal MN does not know it mobile, and in home network, promptly portable terminal MN uses home address to communicate to Access Network " deception " portable terminal MN all the time always.Portable terminal MN no longer needs to move detection and proxy requests, and home agent also no longer needs to send Agent Advertisement.
Owing to need not carry out any operation relevant with mobility after portable terminal MN inserts new subnet, the route of portable terminal MN just needs other softwares or mechanism configuration.For this point, a kind of mode that proposes in the proxy-mobile IP v4 scheme is to adopt DHCP, and the default gateway of portable terminal MN is set to act on behalf of mobile management end PMA, realizes the interconnected of portable terminal MN and network thus.
But a result bringing of aforesaid way is exactly whenever portable terminal MN moves to the new following time of mobile management end PMA of acting on behalf of, all need to trigger again dhcp process one time, upgrade the route default gateway at portable terminal MN, this has increased complexity and the access delay of portable terminal MN undoubtedly.
The access mechanism of the proxy-mobile IP v4 of definition is as shown in Figure 1 at present:
1a, portable terminal MN set up and are connected with the link layer of Foreign Agent, and begin and act on behalf of the access authentication of mobile management end PMA.
1b, AAA client and the aaa server acted on behalf of on the mobile management end PMA exchange AAA information.AAA is the abbreviation of checking, three English words of authorization and accounting (Authentication, Authorization, Accounting), its main purpose is which user of management can access web server, which service user with access right can obtain, and how the user who uses Internet resources is kept accounts.The AAA system adopts customer end/server mode at present, and the task of client is that user profile (user name, password etc.) is passed to specified server, and is responsible for carrying out the response of returning; Server is responsible for receiving user's connection request, user identity is authenticated, and by client return promising user provide the service necessary configuration information.In this process, aaa server can obtain the correlative detail information of portable terminal MN, as IP address and other relevant informations of portable terminal MN home agent, and sends to the AAA client.
2, portable terminal MN asks the IP address by DHCP (Dynamic Host Configure Protocol, DHCP) to acting on behalf of mobile management end PMA.Portable terminal MN carries out the dhcp client function, sends dhcp discover message to Dynamic Host Configuration Protocol server (generally being positioned on the PMA).Dynamic Host Configuration Protocol server can send the DHCP response message after proxy-mobile IP v4 Signalling exchange is finished.
3, triggered by the 2nd step, act on behalf of mobile management end PMA and send proxy registration request to home agent HA, the IP address of home agent HA obtains when 1b goes on foot by aaa server.Proxy registration request comprises the Care-of Address CoA (Care-of Address) that acts on behalf of mobile management end PMA, and promptly PMA goes up the address of a certain network interface, as an end points in tunnel.The home address territory be provided with help 0 or the DHCP request in the address of definition.
4, home agent is set up the mobility binding clauses and subclauses of mobile device after distributing the IP address or having authenticated the home address of asking.Home agent returns home address to acting on behalf of mobile management end PMA in agency of trademark registration is replied.Handle after agency of trademark registration replys acting on behalf of mobile management end PMA, just set up between the forward-path of acting on behalf of between mobile management end PMA and the home agent HA.So far, proxy-mobile IP (PMIP) network connects initialized communication process and finishes.
5, after the exchange of PMIPv4 log-on message,, act on behalf of mobile management end PMA IP address, local and gateway (acting on behalf of mobile management end PMA address) are returned to portable terminal MN by the 2nd step.
6, IP address of the IP stack of portable terminal MN configuration, and can transmit by acting on behalf of mobile management end PMA.And host configuration DNS service also is in this step.Since IPCP or DHCP finish, mobile device just can receive and send the IP bag.If use DHCP, dhcp client can be asked Dynamic Host Configuration Protocol server replacement IP address by direct transmission DHCP, and the allocating default gateway is a route of acting on behalf of mobile management end PMA.So far, portable terminal MN has finished handoff procedure one time.
Can see that by above-mentioned steps there is following deficiency in current scheme: when portable terminal MN whenever switches to the different following times of mobile management end PMA of acting on behalf of, all need by the new route of DHCP protocol configuration (default gateway is for acting on behalf of mobile management end PMA), this can increase complexity and the handover delay of portable terminal MN undoubtedly.For this reason, the invention provides a kind of PMIPv4 portable terminal method for configuring route, adopt proxy ARP to simplify the complexity of portable terminal.
Proxy ARP (proxy ARP) is exactly by using a router to be used as appointed equipment another equipment to be made replying of ARP request.For example shown in Figure 2, if the host A 10.12.0.1 among the subnet A will send the host B 10.13.0.1 of packet in the subnet B, host A just asks to send to host B with ARP.In order to reach host B, just need know the MAC Address of host B.Therefore, host A broadcast arp request on that subnet A that it is positioned at, content is shown in the table 1:
Table 1
| Source MAC | Source IP address | Target MAC (Media Access Control) address | Purpose IP address |
| 00:13:46:72:98:E9 | 10.12.0.1 | ff:ff:ff:ff:ff:ff | 10.13.0.1 |
The eth0 mouth of router also receives this broadcasting, but router default can not transmitted broadcasting, so this ARP request does not still arrive host B.But router is but known host B and is positioned at another one subnet B.So router is replied the MAC Address of oneself and given host A, content is shown in the table 2:
Table 2
| Source MAC | Source IP address | Target MAC (Media Access Control) address | Purpose IP address |
| 00:19:5B:E9:F9:02 | 10.13.0.1 | 00:13:46:72:98:E9 | 10.12.0.1 |
Note table 2, source IP address is the IP address of host B, but source MAC is the MAC Address of router eth0 mouth.The proxy ARP that Here it is sends to host A is replied.Such proxy ARP is replied generally and is sent to requestor's (host A) as clean culture.
After host A receives that this proxy ARP is replied, begin to upgrade the ARP table of oneself, content is shown in the table 3:
Table 3
| The IP address | MAC Address |
| 10.12.0.2 | 00:19:5B:E9:F9:02 |
| 10.13.0.1 | 00:19:5B:E9:F9:02 |
Summary of the invention
In order to overcome the deficiency of prior art structure, the present invention proposes the method for configuring route of portable terminal MN among a kind of PMIPv4, be the new route of home agent HA in next jumping of portable terminal MN configuration, and acting on behalf of mobile management end PMA transmission proxy ARP message, be intended to reduce the complexity of portable terminal MN, reduce handover delay.
The technical solution adopted for the present invention to solve the technical problems:
The method for configuring route of portable terminal MN among a kind of proxy-mobile IP v4 comprises following steps:
Step 1, portable terminal MN set up and the link layer of Foreign Agent connects, and begin and act on behalf of the access authentication of mobile management end PMA.Access authentication can adopt existing various scheme.In verification process, act on behalf of correlative detail information such as portable terminal MN hometown-agent-address and other relevant informations that mobile management end PMA can obtain portable terminal MN, enter step 2 then.
Step 2, judge, be divided into two kinds of situations according to the address state of portable terminal MN:
A, portable terminal MN be configuration of IP address or the IP address aging that disposed not, then triggers Address requests, the IP address, local of request portable terminal MN; Enter step 3 then;
B, portable terminal MN be configuration of IP address, enters step 3 then;
The portable terminal MN correlative detail information of mobile management end PMA according to step 1 acquisition of acting on behalf of of step 3, Access Network is initiated proxy-mobile IP v4 registration process, enters step 4 then.
Step 4, home agent HA are set up the mobility binding clauses and subclauses of mobile device after distributing the IP address or having authenticated the home address of asking.Home agent HA is returned home address to acting on behalf of mobile management end PMA in agency of trademark registration is replied.Handle after agency of trademark registration replys acting on behalf of mobile management end PMA, then set up the forward-path of acting on behalf of between mobile management end PMA and the home agent HA.So far, proxy-mobile IP v4 network connects initialized communication process to be finished, and enters step 5 then.
After step 5, proxy-mobile IP v4 registration process are finished, act on behalf of mobile management end PMA ARP is made certain modification, specifically comprise the ARP request that to send at portable terminal MN to home agent IP address, send proxy ARP to portable terminal MN and reply, enter step 6 then.If belong to situation A in the step 2, after the registration process of proxy-mobile IP v4 is finished, act on behalf of mobile management end PMA home address and gateway (home agent HA address) are returned to portable terminal MN, enter step 6 then.
Under step 6, the situation A, portable terminal MN address acquisition, and the route that to dispose a new default gateway be home agent HA can be communicated by letter; Under the situation B, portable terminal MN need not do any processing, can communicate by letter.
The invention provides a kind of scheme that does not thoroughly participate in proxy-mobile IP v4 handoff procedure at network terminal employing proxy ARP realization portable terminal.This scheme need not be adjusted existing wireless lan network layout, need not do any change and configuration to existing portable terminal, only need the mobile management end PMA that act on behalf of of network terminal suitably be changed, can reduce the complexity and the handover delay of portable terminal, the real transparency (be portable terminal MN in moving process address constant, and route constant) of portable terminal that realize to moving.
In order to further specify principle of the present invention and characteristic, the present invention is described in detail below in conjunction with the drawings and specific embodiments.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is existing PMIPv4 protocol message schematic flow sheet;
Fig. 2 is the schematic diagram of replying of ARP request of the present invention;
Fig. 3 is the routing configuration process schematic diagram of portable terminal MN of the present invention at mobile handoff procedure.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.Fig. 3 represents the routing configuration process schematic diagram at mobile handoff procedure according to the portable terminal MN of one embodiment of the present invention.
It is example that access authentication technique adopts the network access protocol PANA with authentication, introduces aaa architecture, and portable terminal MN adopts the DHCP request address.
Whole step:
Step 1a, portable terminal MN set up by the PANA agreement and are connected with the link layer of Foreign Agent, and begin and act on behalf of the access authentication of mobile management end PMA;
Step 2, be divided into two kinds of situations:
Situation A: portable terminal MN is configuration of IP address or the IP address aging that disposed not, then triggers the DHCP request, to the Dynamic Host Configuration Protocol server request address of acting on behalf of mobile management end PMA.Detailed process is: the DHCP management of process module on the portable terminal MN is as dhcp client, to Web broadcast DHCP discover message, in order to find the Dynamic Host Configuration Protocol server in the network; Act on behalf of DHCP management of process module on the mobile management end PMA as Dynamic Host Configuration Protocol server, reply a DHCP offer of portable terminal MN message after receiving DHCP discover message, in order to tell portable terminal MNDHCP server position; After portable terminal MN receives DHCP offer message, confirm the Dynamic Host Configuration Protocol server address, send the DHCP request, the IP address of request portable terminal MN to Dynamic Host Configuration Protocol server.
Situation B: portable terminal MN is configuration of IP address, then skips this step;
Step 3, triggered by step 1b, the AAA client process administration module of promptly acting on behalf of mobile management end PMA receives that the portable terminal MN correlative detail information that aaa server returns (as portable terminal MN home agent HA address etc.) back initiates the proxy-mobile IP registration process.The PMIP management of process module of PMIP management of process module on home agent HA of acting on behalf of on the mobile management end PMA sends proxy registration request message.
The mobility binding clauses and subclauses of after distributing the IP address or having authenticated the home address of asking, setting up mobile device of PMIP management of process module on step 4, the home agent HA.Home agent HA is returned home address to acting on behalf of mobile management end PMA in agency of trademark registration is replied.After the intact agency of trademark registration of the PMIP management of process resume module of acting on behalf of mobile management end PMA is replied, just set up between the forward-path of acting on behalf of between mobile management end PMA and the home agent HA, so far, proxy mobile IP networks connects initialized communication process and finishes.
Under situation B, after the exchange of PMIP log-on message, act on behalf of mobile management end PMA and only send proxy ARP message for home agent HA.
Under step 6, the situation A, portable terminal MN obtains the IP address by DHCP management of process module, and the route that to dispose a new default gateway be home agent HA, can communicate by letter;
Under the situation B, portable terminal MN need not do any processing, can communicate by letter.
According to an embodiment of the invention, the concrete communication process of portable terminal MN is:
(1) portable terminal MN broadcasting is to the ARP request of home agent HA address resolution;
(2) act on behalf of mobile management end PMA and receive that this broadcast request resolves, and send proxy ARP and reply to portable terminal MN, wherein source IP address is the address of home agent HA, and source MAC is a MAC Address of acting on behalf of mobile management end PMA;
(3) portable terminal MN binds the IP address of home agent HA with the MAC Address of acting on behalf of mobile management end PMA, adds in the arp cache table of portable terminal MN.The packet that is sent by portable terminal MN can at first mail to the IP address of home agent HA according to the route of new configuration later on, but in fact acted on behalf of mobile management end PMA interception, and mail to home agent HA by the route of acting on behalf of mobile management end PMA, continue to be routed to the destination then.
Though more than described the specific embodiment of the present invention, but those skilled in the art is to be understood that, these embodiments only illustrate, those skilled in the art can carry out various omissions, replacement and change to the details of said method and system under the situation that does not break away from principle of the present invention and essence.For example, carry out the essence identical functions according to the identical method of essence and then belong to scope of the present invention to realize the identical result of essence to merge the mode of said method step.Therefore, scope of the present invention is only limited by appended claims.
Abbreviation and Key Term definition
AAA:Authentication, Authorization, Accounting, authentication and authorization charging
AAAs:AAA server, aaa server
AAAc:AAA client, the AAA client
ARP:Address Resolution Protocol, address resolution protocol
DHCP:Dynamic Host Configure Protocol, DHCP
FA:Foreign Agent, Foreign Agent
HA:Home Agent, home agent
IPCP:Internet Protocol Control Protocol, IP control protocol
MN:Mobile Device, portable terminal
NAS:Network Authentication Server, network authentication server
PANA:Protocol for Carrying Authentication for Network Access has the network access protocol of authentication
PMA:Proxy Mobility Agent acts on behalf of the mobile management end
PMIP:Proxy Mobile IP proxy-mobile IP
PMIPv4:Proxy Mobile IPv4, proxy-mobile IP v4
Claims (4)
1. the method for configuring route of portable terminal among the proxy-mobile IP v4 is characterized in that being, comprises the steps:
Step 1, portable terminal are set up and are connected with the link layer of Foreign Agent, and begin and act on behalf of the access authentication of mobile management end, obtain the relevant information of portable terminal;
Step 2, the address state in the relevant information of portable terminal is judged, wherein,
Under situation A, portable terminal is configuration of IP address or the IP address aging that disposed not, then triggers Address requests, and the IP address, local of request portable terminal enters step 3 then;
Under situation B, portable terminal is configuration of IP address, then directly enters step 3;
Step 3, act on behalf of the relevant information of mobile management end, initiate proxy-mobile IP v4 registration process, enter step 4 then according to the portable terminal that obtains in the step 1;
Step 4, home agent are set up the mobility binding clauses and subclauses of portable terminal after distributing the IP address or having authenticated the IP address, local of asking;
Home agent returns to IP address, local in agency of trademark registration is replied and acts on behalf of the mobile management end;
Handle after agency of trademark registration replys acting on behalf of the mobile management end, set up the forward-path of acting on behalf of between mobile management end and the home agent, finish proxy-mobile IP v4 network and connect the initialize communications process, enter step 5 then;
Step 5, under situation A, after proxy-mobile IP v4 registration process is finished, act on behalf of the mobile management end and reply the ARP request that portable terminal sends home agent IP address, enter step 6 then;
Under situation B, after proxy-mobile IP v4 registration process is finished, act on behalf of the mobile management end and only send proxy ARP message for home agent;
Step 6, under situation A, portable terminal obtains the IP address, and new default gateway is configured to the route of home agent, communicates;
Under situation B, portable terminal directly communicates.
2, method according to claim 1 is characterized in that:
In above-mentioned steps 5, after proxy-mobile IP v4 registration process is finished, act on behalf of the mobile management end at the ARP request that portable terminal may send to home agent IP address, send proxy ARP to portable terminal and reply.
3, method according to claim 1 is characterized in that:
In above-mentioned steps 6, after portable terminal obtained the IP address, the allocating default gateway was the route of home agent.
4, method according to claim 1 is characterized in that:
In step 6, portable terminal is finished routing configuration, during the beginning data communication, at first broadcasts the ARP request to home agent IP address resolution,
Act on behalf of the mobile management end and intercept described ARP request, it is resolved, and proxy ARP replied send to portable terminal, wherein source IP address is a hometown-agent-address, and source MAC is a MAC Address of acting on behalf of the mobile management end,
Portable terminal is bound hometown-agent-address and the MAC Address of acting on behalf of the mobile management end, adds in the arp cache table of portable terminal.
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| CNA2008102403603A CN101510900A (en) | 2008-12-19 | 2008-12-19 | Method for configuring route of mobile terminal in PMIPv4 |
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| CNA2008102403603A CN101510900A (en) | 2008-12-19 | 2008-12-19 | Method for configuring route of mobile terminal in PMIPv4 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624619A (en) * | 2012-03-09 | 2012-08-01 | 上海大亚科技有限公司 | Method for performing message forwarding route selection based on source address under multi-default gateway condition |
| CN102957752A (en) * | 2011-08-19 | 2013-03-06 | 中兴通讯股份有限公司 | System and method for identification and gateway address distribution |
| CN109413226A (en) * | 2018-11-30 | 2019-03-01 | 南京邮电大学 | A kind of system and method for realizing zero Agent IP fast roaming |
| WO2019095837A1 (en) * | 2017-11-17 | 2019-05-23 | 华为技术有限公司 | Data processing method, apparatus and device |
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2008
- 2008-12-19 CN CNA2008102403603A patent/CN101510900A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957752A (en) * | 2011-08-19 | 2013-03-06 | 中兴通讯股份有限公司 | System and method for identification and gateway address distribution |
| CN102624619A (en) * | 2012-03-09 | 2012-08-01 | 上海大亚科技有限公司 | Method for performing message forwarding route selection based on source address under multi-default gateway condition |
| CN102624619B (en) * | 2012-03-09 | 2015-05-27 | 上海大亚科技有限公司 | Method for performing message forwarding route selection based on source address under multi-default gateway condition |
| WO2019095837A1 (en) * | 2017-11-17 | 2019-05-23 | 华为技术有限公司 | Data processing method, apparatus and device |
| US11212226B2 (en) | 2017-11-17 | 2021-12-28 | Huawei Technologies Co., Ltd. | Data processing method and apparatus, and device |
| CN109413226A (en) * | 2018-11-30 | 2019-03-01 | 南京邮电大学 | A kind of system and method for realizing zero Agent IP fast roaming |
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Open date: 20090819 |