CN103037360A - Mapping request response, information acquiring method and relevant devices based on locator identifier split protocol (LISP) - Google Patents
Mapping request response, information acquiring method and relevant devices based on locator identifier split protocol (LISP) Download PDFInfo
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- H04L61/00—Network arrangements, protocols or services for addressing or naming
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Abstract
Disclosed is a mapping request response, a information acquiring method and relevant devices based on a locator identifier split protocol (LISP). Map server (MS) receives a first mapping request message which is sent by an ingress tunnel router (ITR) and carries a mobile node endpoint identifier (MEID), and the MS searches a first mapping information from the MEID to a station location marker and a first P bit value in the local database. If the MS finds, the station location marker is judged to see whether the station location maker is a station endpoint identifier (SEID) maintained by the MS. If the station location maker is the SEID maintained by the MS, the MS searches a second mapping information from the SEID to an egress tunnel router routing locator (ERLOC) and a second P bit value in the local database. The MS continues a mapping response treatment process of the two mapping information according to searched results. Correspondingly, after the ITR sends a mapping request message which carries the MEID to a mapping system, and the mapping request message corresponding to a first mapping response message is received. If 2, as a number maker which does not indicated the number of response messages, can not exist in the first mapping response message, the ITR receives all the mapping information, and the process is finished. The mapping request response, the information acquiring method and the relevant devices based on the LISP reduces sending of messages, and saves network resources.
Description
Technical field
The present invention relates to field of mobile communication and internet arena, more specifically, relate to a kind of mapping request response, information getting method and relevant device in position and identity separated network.
Background technology
LISP (Locator Identifier Split Protocol, position and identity separated protocol) technology is a kind of solution of separating with the position of host machine sign based on the host identities sign, and as shown in Figure 1a, its implementation is as follows:
Station network (being often referred to user network) separates with transmission network (being often referred to carrier network), address space is divided into EID (Endpoint Identifier, endpoint identifier, address in the expression station network) address space and RLOC (Routing Locator, the route location identifier, the accessibility in the expression border router network) address space.Website in the network is at the routing iinformation of network internal, it is the EID address information, be not published to and transmit in the network, two station networks are by ITR (Ingress Tunnel Router, the entrance tunnel router) setting up the tunnel that passes through transmission network and between the ETR (Egress Tunnel Router, exit tunnel router) connects.Station network realizes that by an independent mapped system EID is to the maintenance of the map information of RLOC.
In the time of need to carrying out data retransmission, to ITR, ITR initiates the mapping request to mapped system, obtains the mapping relations between purpose EID and purpose website RLOC with package forward in the generation side of packet in the station network.ITR cache mapping information, and packet is carried out LISP encapsulation according to map information, with Packet Generation to ETR.After the decapsulation of ETR executing data bag, give packet recipient in the descending purpose website with package forward.
Shown in Figure 1, shine upon the plane explanation as an example of ALT (Alternative Topology) mapped system example, used MR (map resolver, mapping resolver) and MS (map server, mapping server) in the mapped system.MR receives the mapping request message of the LISP encapsulation of ITR transmission, and according to EID prefix (prefix) routing iinformation in the mapping network, message is sent to corresponding MS.The map information of MS storage ETR registration, and the mapping message repeating that will receive is given corresponding ETR.Describe although more than be based on the LISP+ALT framework, the invention is not restricted to adopt the ALT mapped system, also can be applicable to other mapped systems.
Relate to equally the LISP technology in the prior art to ambulant support.In the LISP Research of Mobility, each MN (Mobile Node, mobile node) all can regard a LISP website as, and MN can carry out the partial function of ETR and ITR.Comprise two signs on the MN equipment: one is the identify label of MN, and this sign can not change usually; Another is the station location marker of MN, and when MN moved to reposition, capable of dynamic obtained this sign, the scene shown in Fig. 1 b.The identify label of MN represents with the EID of MN, is abbreviated as MEID.When MN moved in the LISP website, the station location marker that gets access to was an EID in the site address space, represented with the EID of website, was abbreviated as SEID.After MN obtains new SEID, at once MEID is registered in the corresponding mapped system to the mapping relations of SEID.
In the prior art, if this situation occurs, ITR at first initiates the mapping request to mapped system when searching the map information of MN, by MS corresponding to MN, obtain the MEID of this MN to the mapping relations of SEID.If without the mapping item of this SEID, then also need pass through mapped system in the ITR buffer memory, search and obtain this SEID to the mapping of the RLOC (being abbreviated as ERLOC) of corresponding ETR.ITR carries out transmitting after the two-layer LISP encapsulation to packet according to this two parts map information again.
The inventor finds that there is following problem at least in prior art in realizing process of the present invention: when MN when reposition obtains SEID, the ITR router need to be finished twice map information and search, and can obtain with MN and set up the needed whole map information of communicating by letter.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of mapping request responding method, information getting method and relevant device based on LISP that can reduce message transmission and conserve network resources.
In order to address the above problem, the invention provides the mapping request responding method of a kind of position-based and identity separated protocol, comprising:
Mapping server (MS) is received the first mapping request message that carries mobile node endpoint identifier (MEID) that entrance tunnel router (ITR) sends, and shines upon response flag bit (P bit) value the first map information and corresponding first agent that this MEID of local data library lookup identifies to the position;
As find, described MS judges this station location marker website endpoint identifier (SEID) whether this MS safeguards that finds, in this way, in local data base, search this SEID to the second map information of exit tunnel router route location identifier (ERLOC) and the 2nd corresponding P bit value;
Described MS continues the mapping response handling process of these two map informations according to the lookup result of the first map information and a P bit value and the second map information and the 2nd P bit value.
Preferably,
Described MS continues the mapping response handling process of these two map informations, comprising:
MS finds the first map information and a P bit value and the second map information and the 2nd Pbit value as described, and a Pit value and the 2nd P bit value all represent MS can proxy mapping response, described MS is encapsulated in the map information of this MEID to the map information of SEID and this SEID to ERLOC in the mapping response message and returns to described ITR.
Preferably,
Described MS continues the mapping response handling process of these two map informations, comprising:
As described MS find the first map information and expression MS can proxy mapping the one Pbit value of response, and the 2nd P bit value that cannot proxy mapping responds of the second map information and expression MS;
Described MS returns the first mapping response message that carries the first map information to described ITR, and to the second mapping request message that exit tunnel router (ETR) transmission corresponding to this ERLOC encapsulates, ask described ETR to return the second mapping response message that carries the second map information to described ITR;
Wherein, described the first mapping response message, the second mapping response message and second shine upon all to carry in the request message and represent that mapping response message number is 2 number indicia.
Preferably,
Described MS continues the mapping response handling process of these two map informations, comprising:
As described MS find the first map information and expression MS cannot proxy mapping the one Pbit value of response, and the 2nd P bit value that can proxy mapping responds of the second map information and expression MS;
Described MS returns the second mapping response message that carries the second map information to described ITR, and to the 3rd mapping request message that described MN sends encapsulation, asks described MN to return the first mapping response message that carries the first map information to described ITR;
Wherein, described the first mapping response message, the second mapping response message and the 3rd shine upon all to carry in the request message and represent that mapping response message number is 2 number indicia.
Preferably,
Described MS continues the mapping response handling process of these two map informations, comprising:
As described MS find the first map information and expression MS cannot proxy mapping the one Pbit value of response, and the 2nd P bit value that cannot proxy mapping responds of the second map information and expression MS;
Described MS asks described ETR to return the second mapping response message that carries the second map information to described ITR to the second mapping request message that ETR corresponding to this ERLOC sends encapsulation; Described MS also sends the 3rd mapping request message of encapsulation to described MN, ask described MN to return the first mapping response message that carries the first map information to described ITR;
Wherein, all carrying expression mapping response message number in described the first mapping response message, the second mapping response message, the second mapping request and the 3rd mapping request message is 2 number indicia.
The present invention also provides the map information acquisition methods of a kind of position-based and identity separated protocol, comprising:
Entrance tunnel router (ITR) sends the mapping request message that carries mobile node endpoint identifier (MEID) to mapped system, and map information corresponding to this MEID searched in request;
After described ITR receives corresponding first of this mapping request message mapping response message, as judge that not having indication response message number in this first mapping response message is 2 number indicia, represent that then described ITR has received all map informations, finish.
Preferably,
After described ITR receives first mapping response message corresponding to this mapping request message, as judge that having indication response message number in this first mapping response message is 2 number indicia, then ITR starts a timer, the mapping request time of delay that the timing of this timer equals to allow, described ITR is another mapping response message as receiving that this mapping request message is corresponding in this timing, finish, otherwise again send the mapping request message to described mapped system.
Correspondingly, the present invention also provides the mapping server of a kind of position-based and identity separated protocol, comprising:
The message receiving element is used for receiving the first mapping request message that carries mobile node endpoint identifier (MEID) that entrance tunnel router (ITR) sends;
The information searching unit, the first map information and the corresponding first agent that are used for identifying to the position at this MEID of local data library lookup are shone upon response flag bit (P bit) value, as find, judge this station location marker website endpoint identifier (SEID) whether this MS safeguards that finds, in this way, in local data base, search this SEID to the second map information of exit tunnel router route location identifier (ERLOC) and the 2nd corresponding P bit value;
The response processing unit is used for the lookup result according to the first map information and a P bit value and the second map information and the 2nd P bit value, continues the mapping response handling process of these two map informations.
Preferably,
Described response processing unit continues the mapping response handling process of these two map informations, comprise: find the first map information and a P bit value and the second map information and the 2nd P bit value such as the information searching unit, and a Pit value and the 2nd P bit value all represent MS can proxy mapping response, then the map information of this MEID to the map information of SEID and this SEID to ERLOC is encapsulated in the mapping response message and returns to described ITR.
Preferably,
Described response processing unit continues the mapping response handling process of these two map informations, comprise: as the information searching unit find the first map information and expression MS can proxy mapping the one P bit value of response, and second map information and expression MS cannot proxy mapping the 2nd P bit value of response, then return the first mapping response message that carries the first map information to described ITR, and send the second mapping request message of encapsulation to exit tunnel router (ETR) corresponding to this ERLOC; All carry in described the first mapping response message and the second mapping request message and represent that mapping response message number is 2 number indicia.
Preferably,
Described response processing unit continues the mapping response handling process of these two map informations, comprise: as the information searching unit find the first map information and expression MS cannot proxy mapping the one Pbit value of response, and second map information and expression MS can proxy mapping the 2nd P bit value of response, then return the second mapping response message that carries the second map information to described ITR, and send the 3rd mapping request message of encapsulation to described MN; All carry in described the second mapping response message and the 3rd mapping request message and represent that mapping response message number is 2 number indicia.
Preferably,
Described response processing unit continues the mapping response handling process of these two map informations, comprise: as the information searching unit find the first map information and expression MS cannot proxy mapping the one Pbit value of response, and second map information and expression MS cannot proxy mapping the 2nd P bit value of response, then send the second mapping request message of encapsulation to ETR corresponding to this ERLOC, send the 3rd mapping request message of encapsulation to described MN; Wherein, described the second mapping request and the 3rd is shone upon all to carry in the request message and is represented that mapping response message number is 2 number indicia.
The present invention provides the entrance tunnel router (ITR) of a kind of position-based and identity separated protocol again, it is characterized in that, comprising:
Packet sending unit is used for sending the mapping request message that carries mobile node endpoint identifier (MEID) to mapped system, and map information corresponding to this MEID searched in request;
Message receives and processing unit, be used for after receiving first mapping response message corresponding to this mapping request message, as judge that it is 2 number indicia that there is not indication response message number in the response message in this first mapping, and then represent described all map informations that received, finish.
Preferably,
After described message reception and processing unit receive first mapping response message corresponding to this mapping request message, as judge that having indication response message number in this first mapping response message is 2 number indicia, then start a timer, another mapping response message as receiving that this mapping request message is corresponding in the timing of this timer, finish, otherwise, notify described packet sending unit again to send the mapping request message to described mapped system;
Described packet sending unit also is used for again sending the mapping request message to described mapped system after the described notice of receiving message reception and processing unit.
Such scheme obtains flow process by improving map information, strengthens the MS function, can reduce the transmission of mapping request message, avoids network resources waste, reduces the impact on package forward.
Description of drawings
Fig. 1 a is the network architecture diagram of existing LISP+ALT;
Fig. 1 b is in the network of Fig. 1 a, and MN obtains SEID as the schematic diagram of the scene of station location marker;
Fig. 2 a is the flow chart of the mapping request responding method of the embodiment of the invention one;
Fig. 2 b is the flow chart of the map information acquisition methods of the embodiment of the invention one;
Fig. 2 c is the functional block diagram of the MS of the embodiment of the invention one;
Fig. 2 d is the functional block diagram of the ITR of the embodiment of the invention one;
Fig. 3 is the embodiment of the invention two is obtained map information under proxy mode flow chart;
Fig. 4 and Fig. 5 are respectively the embodiment of the invention three is obtained map information in two kinds of situations of half proxy mode flow charts;
Fig. 6 is the embodiment of the invention four without the flow chart that obtains map information under the proxy mode.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing embodiments of the invention are elaborated.Need to prove that in the situation of not conflicting, the embodiment among the application and the feature among the embodiment be combination in any mutually.
In the LISP framework shown in Fig. 1 a, need to pay close attention to two mapping logon messages:
ETR corresponding to website EID need to be to mapped system enrollment station EID to ERLOC map information.When ETR registers map information to the MS in the mapped system, can by the state of P bit (proxy-map-reply bit: proxy mapping responds flag bit) is set, set the entity of response mapping request in logon message.If P bit is 0, then MS will shine upon request message and be transmitted to ETR; If P bit is 1, then MS can be used as the agency of ETR to ITR response mapping request.
MN carries out the ETR function, moves to new position, obtained new SEID after, need to register MEID to the map information of SEID to mapped system.When MN registers map information to the MS in the mapped system, also can set by the state that P bit is set the entity of response mapping request in logon message.If P bit is 0, then MS will shine upon request message and be transmitted to MN; If P bit is 1, then MS can be used as the agency of MN to ITR response mapping request.
Among the present invention, according to the difference setting of P bit in above-mentioned two logon messages, the registration scene can be divided into following three kinds:
Scene one: proxy mode.If in the logon message that MN and ETR send, P bit all is set to 1, claims that then this pattern is proxy mode.
Two: half proxy modes of scene.If P bit puts that P bit sets to 0 in the logon message that 1, ETR sends in the logon message that MN sends; Perhaps, P bit sets to 0 in the logon message that MN sends, and P bit puts 1 in the logon message that ETR sends, and claims that then this pattern is half proxy mode.
Scene three: without proxy mode.If in the logon message that MN and ETR send, P bit all is set to 0, then this pattern all is called without proxy mode.
Embodiment one
Present embodiment relates to the flow process that MS obtains map information to response handling process and the ITR of mapping request.
Shown in Fig. 2 a, MS comprises the response handling process of mapping request:
Wherein, step 203 comprises again:
Find the first map information and a P bit value and the second map information and the 2nd P bit value such as MS, and a Pit value and the 2nd P bit value all represent MS can proxy mapping response, MS is encapsulated in the map information of this MEID to the map information of SEID and this SEID to ERLOC in the mapping response message and returns to ITR;
As MS find the first map information and expression MS can proxy mapping the one P bit value of response, and the 2nd P bit value that cannot proxy mapping responds of the second map information and expression MS; Then MS returns the first mapping response message that carries the first map information to ITR, and to the second mapping request message that exit tunnel router (ETR) transmission corresponding to this ERLOC encapsulates, ask ETR to return the second mapping response message that carries the second map information to ITR;
As MS find the first map information and expression MS cannot proxy mapping the one P bit value of response, and the 2nd P bit value that can proxy mapping responds of the second map information and expression MS; Then MS returns the second mapping response message that carries the second map information to ITR, and to the 3rd mapping request message that MN sends encapsulation, asks MN to return the first mapping response message that carries the first map information to ITR;
As MS find the first map information and expression MS cannot proxy mapping the one P bit value of response, and the 2nd P bit value that cannot proxy mapping responds of the second map information and expression MS; Then MS asks ETR to return the second mapping response message that carries the second map information to ITR to the second mapping request message that ETR corresponding to this ERLOC sends encapsulation; MS also sends the 3rd mapping request message of encapsulation to MN, request MN returns the first mapping response message that carries the first map information to ITR;
Wherein, all carrying expression mapping response message number in all mapping response messages of sending of above-mentioned MS and the mapping request message is 2 number indicia.
Shown in Fig. 2 b, ITR obtains the flow process of map information, comprising:
Step 250, ITR sends the mapping request message that carries MEID to mapped system, and map information corresponding to this MEID searched in request;
Step 251, after ITR receives corresponding first of this mapping request message mapping response message, judge that whether having indication response message number in this first mapping response message is 2 number indicia, as not existing, represent that described ITR has received all map informations, finish; As there being execution in step 252;
Step 252, ITR starts a timer, the mapping response time that the timing of this timer equals to allow;
Step 253, ITR is in the timing of this timer as receive another mapping response message that this mapping request message is corresponding, finish, otherwise execution in step 253;
Step 254, ITR sends the mapping request message to described mapped system again.
This shines upon request message again can be with the mapping request message that sends for the first time.When MEID is carried in first mapping that receives to the map information of SEID in response message, also can in the mapping request message of again transmission, carry this SEID, namely only search map information corresponding to this SEID.
Accordingly, shown in Fig. 2 c, present embodiment comprises based on the MS of LISP:
Described response processing unit continues the mapping response handling process of these two map informations, please refer to the above explanation of step 203, no longer repeats at this.
Accordingly, shown in Fig. 2 d, present embodiment comprises based on the ITR of LISP:
Message receives and processing unit 22, be used for after receiving first mapping response message corresponding to this mapping request message, judge that whether this first mapping exists indication response message number in the response message is 2 number indicia, as not existing, then expression has received all map informations, finishes; As existing, then start a timer, another mapping response message as receiving that this mapping request message is corresponding in the timing of this timer finishes, otherwise, notify described packet sending unit again to send the mapping request message to described mapped system.The mapping request message explanation as mentioned that again sends.
Embodiment two
Present embodiment relates to obtaining of map information under the proxy mode.The flow process that map information obtains as shown in Figure 3, the acquisition of information step is as follows:
301:ETR registers map information to MS, comprises SEID in the map information to the mapping of ERLOC, and the P bit in the logon message puts 1, and expression MS can act on behalf of ETR response mapping request; MS preserves this SEID to the map information of ERLOC and corresponding P bit value;
The SEID that 302:MN newly obtains to MS registration is to the mapping relations of MEID, and the P bit in the logon message puts 1, and expression MS can act on behalf of MN response mapping and ask; MS preserves this SEID to the map information of MEID and corresponding P bit value;
303:ITR sends the mapping request message to mapped system, searches map information corresponding to MEID;
Map information registration process among the step 301-303 and mapping request forward process process based on MR in mapped system can based on existing procedure, no longer elaborate in the literary composition.
After the MS that 304:MN is corresponding receives the mapping request message, according to the MEID in the message, the map information and the corresponding P bit value that identify to the position as find this MEID at local data base, judge again this SEID SEID whether this MS safeguards that finds, in this way, MS is at the P bit of this SEID of local data library lookup to the map information of ERLOC and correspondence.
Need to prove that what discuss in the literary composition is that MS preserves the situation of MEID to the map information of SEID and SEID to the map information of ERLOC.For MS search less than described map information or find be MEID to the situation of the map information of ERLOC, MS can process by existing procedure, the present invention no longer discusses, other embodiment are herewith.
305: if MS finds the map information of MEID to the map information of SEID and SEID to ERLOC in local data base, and the P bit that these two map informations are corresponding is 1, and then MS is encapsulated in the map information of MEID to the map information of SEID and SEID to ERLOC in the mapping response message and returns to ITR.
The map information acquisition methods of present embodiment, having solved the P bit in the logon message that MN and ETR send that exists in the prior art is under 1 the scene, how to reduce the number that sends the control message, avoid network resources waste, and reduced as much as possible because the problem that the package forward that Map Searching causes postpones.
Embodiment three
Present embodiment relates to obtaining of map information under half proxy mode.Half proxy mode comprises two kinds of situations: the P bit in the logon message that the first: ETR sends sets to 0, and the P bit in the logon message that MN sends puts 1; P bit puts that P bit sets to 0 in the logon message that 1, MN sends in the logon message that the second, ETR send.The map information of two kinds of situations obtains flow process respectively corresponding diagram 4 and Fig. 5.
In the first situation, ETR does not allow the response of MS proxy mapping, and when MN allowed the response of MS proxy mapping, as shown in Figure 4, the flow process of obtaining of map information comprised:
401:ETR registers map information to MS, comprises SEID in the map information to the mapping of ERLOC, and the P bit in the logon message sets to 0, and expression MS cannot act on behalf of ETR response mapping request; MS preserves this SEID to the map information of ERLOC and corresponding P bit value;
The SEID that 402:MN newly obtains to MS registration is to the mapping relations of MEID, and the P bit in the logon message puts 1, and expression MS can act on behalf of MN response mapping and ask; MS preserves this SEID to the map information of MEID and corresponding P bit value;
403:ITR sends the mapping request message to mapped system, searches map information corresponding to MEID;
After the MS that 404:MN is corresponding receives the mapping request message, according to the MEID in the message, the map information and the corresponding P bit value that identify to the position as find this MEID at local data base, judge again this SEID SEID whether this MS safeguards that finds, in this way, MS is at the P bit of this SEID of local data library lookup to the map information of ERLOC and correspondence.
405: be 0 if MS finds SEID in local data base to the map information of ERLOC and P bit corresponding to this map information, then MS asks ETR to return to ITR and carries SEID to the mapping response message of ERLOC map information to the mapping request message that ETR sends encapsulation;
The source address of the mapping request message of above-mentioned encapsulation is the RLOC (being abbreviated as IRLOC) of ITR, and destination address is SEID, to map information corresponding to ETR request SEID.MS can add two marks in message, the number (number is 2) of the mapping response message that number indicia indication ITR should receive, the serial number information that sequence number mark instruct MS is distributed for the mapping response message is as being 0,1, MS is that the mapping response message that carries different mappings information distributes different sequence numbers.
406: be 1 if MS finds MEID in local data base to the map information of SEID and P bit corresponding to this map information, then MS returns the mapping response message to ITR, carries MEID to the map information of SEID;
Equally, MS can add number indicia and sequence number mark in the mapping response message that returns, the mark in the mapping request message that the implication of these 2 marks sends to ETR with MS, and just sequence number is different.
The execution sequence of above-mentioned steps 405,406 in no particular order.
Behind first mapping response message that 407:ITR receives, shine upon in addition response message according to wherein number indicia and sequence number marker for judgment and do not receive, then start a timer;
Suppose that ITR receives first the mapping response message that MS returns in the step 406, wherein comprises MEID to the map information of SEID.After ITR receives, judge that shining upon in addition response message does not receive, then starts a timer.In another case, if ITR receive first that ETR returns comprise SEID to the mapping response message of ERLOC map information, also start this timer.
408:ETR returns the mapping response message to ITR, carries SEID to the map information of ERLOC, and number indicia and the sequence number mark in the mapping request message in the step 405.
ITR receives or does not receive another mapping processing during response message and please refer to explanation in the step 254 above in the timing of above-mentioned timer, other embodiment herewith no longer repeat.
Above-mentioned steps 407 and 408 mapping response message reception order interchangeable.
Above embodiment can also have one to become example, only keeps number indicia in this changes example, does not use the sequence number mark, and ITR receives that the number that shines upon response message just can be judged and receives all mapping response messages according to this number indicia and record.Other execution modes herewith.
In the second situation, ETR allows the response of MS proxy mapping, and when MN did not allow the response of MS proxy mapping, as shown in Figure 5, the flow process of obtaining of map information comprised:
501:ETR registers map information to MS, comprises SEID in the map information to the mapping of ERLOC, and the P bit in the logon message puts 1, and expression MS can act on behalf of ETR response mapping request; MS preserves this SEID to the map information of ERLOC and corresponding P bit value;
The SEID that 502:MN newly obtains to MS registration is to the mapping relations of MEID, and the P bit in the logon message sets to 0, and expression MS cannot act on behalf of MN response mapping and ask; MS preserves this SEID to the map information of MEID and corresponding P bit value;
503:ITR sends the mapping request message to mapped system, searches map information corresponding to MEID;
After the MS that 504:MN is corresponding receives the mapping request message, as finding MEID in the message at local data base to the map information of SEID and corresponding P bit value, judge again this SEID SEID whether this MS safeguards that finds, in this way, MS is at the P bit of this SEID of local data library lookup to the map information of ERLOC and correspondence;
505: be 0 if MS finds MEID in local data base to the map information of SEID and P bit corresponding to this map information, then MS asks MN to return to ITR and carries MEID to the mapping response message of SEID map information to the mapping request message that MN sends encapsulation;
The source address of the mapping request message of above-mentioned encapsulation is IRLOC, and destination address is MEID.Can add number indicia and sequence number mark in the message, implication is identical with the first situation.
506: be that 1, MS returns the mapping response message to ITR if MS finds SEID in local data base to the map information of ERLOC and P bit corresponding to this map information, carry SEID to the map information of ERLOC;
Can add number indicia and sequence number mark in the mapping response message that MS returns to ITR.
Step 505,506 execution sequence in no particular order.The number indicia of herein adding is identical with the effect described in the situation one with the effect of sequence number mark.
Behind first mapping response message that 507:ITR receives, shine upon in addition response message according to wherein number indicia and sequence number marker for judgment and do not receive, then start a timer;
This step can be with reference to the explanation in the step 407.
508:MN returns the mapping response message to ITR, carries SEID to the map information of MEID, and number indicia and the sequence number mark in the mapping request message in the step 413;
Step 506 and 508 mapping response message reception order interchangeable.
The map information acquisition methods of present embodiment, having solved the P bit that has in the logon message that MN and ETR send that exists in the prior art is under 1 the scene, how to reduce the number that sends the control message, avoid network resources waste, and reduced as much as possible because the problem that the package forward that Map Searching causes postpones.
Embodiment four: under proxy mode
Under proxy mode, ETR and MN all do not allow MS proxy mapping response, map information obtain flow process as shown in Figure 6, comprising:
601:ETR registers map information to MS, comprises SEID in the map information to the mapping of ERLOC, and the P bit in the logon message sets to 0, and expression MS cannot act on behalf of ETR response mapping request; MS preserves this SEID to the map information of ERLOC and corresponding P bit value;
The SEID that 602:MN newly obtains to MS registration is to the mapping relations of MEID, and the P bit in the logon message sets to 0, and expression MS cannot act on behalf of MN response mapping and ask; MS preserves this SEID to the map information of MEID and corresponding P bit value;
603:ITR sends the mapping request message to mapped system, searches map information corresponding to MEID;
After the MS that 604:MN is corresponding receives the mapping request message, according to the MEID in the message, the map information and the corresponding P bit value that identify to the position as find this MEID at local data base, judge again this SEID SEID whether this MS safeguards that finds, in this way, MS is at the P bit of this SEID of local data library lookup to the map information of ERLOC and correspondence;
605: be 0 if MS finds SEID in local data base to the map information of ERLOC and P bit corresponding to this map information, then MS asks ETR to return to ITR and carries SEID to the mapping response message of ERLOC map information to the mapping request message that ETR sends encapsulation;
The source address of the mapping request message of above-mentioned encapsulation is IRLOC, and destination address is SEID.Can add number indicia and sequence number mark in the message, implication is identical with embodiment two.
606: to be 0, MS to the map information of MEID and P bit corresponding to this map information send the mapping request message of encapsulation to MN if MS finds SEID in local data base, and request MN returns to ITR and carries MEID to the mapping response message of SEID map information;
The source address of the request message of above-mentioned encapsulation is IRLOC, and destination address is MEID, also can add number indicia and sequence number mark in the message.
607:ETR returns the mapping response message to ITR, carries SEID to the map information of ERLOC, and the number indicia in the mapping request message of step 605 and sequence number mark;
Behind first mapping response message that 608:ITR receives, shine upon in addition response message according to wherein number indicia and sequence number marker for judgment and do not receive, then start a timer;
This step can be with reference to the explanation in the step 407.
609:MN returns the mapping response message to ITR, carries MEID to the map information of SEID, and the number indicia in the mapping request message of step 606 and sequence number mark.
In the above-mentioned steps, step 605 and 606 execution sequence in no particular order, the reception of mapping response message interchangeable sequentially in the step 607 and 609.Number indicia in the present embodiment is identical with the effect among the embodiment two with the effect of sequence number mark.
The map information acquisition methods of present embodiment, having solved the P bit in the logon message that MN and ETR send that exists in the prior art is under 0 the scene, how to reduce the number that sends the control message, avoid network resources waste, and reduced as much as possible because the problem that the package forward that Map Searching causes postpones.
Adopt above-mentioned execution mode of the present invention, when the station location marker that obtains at reposition as MN was SEID, ITR only sends a mapping request message namely may get access to two parts map information of MEID to SEID and SEID to EROLC.Based on this map information acquisition methods, can reduce the number that sends the control message, avoid network resources waste, and reduced as much as possible because the package forward that Map Searching causes postpones.
One of ordinary skill in the art will appreciate that all or part of step in the said method can come the instruction related hardware to finish by program, described program can be stored in the computer-readable recording medium, such as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment can realize with one or more integrated circuits that also correspondingly, each the module/unit in above-described embodiment can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. the mapping request responding method of a position-based and identity separated protocol comprises:
Mapping server (MS) is received the first mapping request message that carries mobile node endpoint identifier (MEID) that entrance tunnel router (ITR) sends, and shines upon response flag bit (P bit) value the first map information and corresponding first agent that this MEID of local data library lookup identifies to the position;
As find, described MS judges this station location marker website endpoint identifier (SEID) whether this MS safeguards that finds, in this way, in local data base, search this SEID to the second map information of exit tunnel router route location identifier (ERLOC) and the 2nd corresponding P bit value;
Described MS continues the mapping response handling process of these two map informations according to the lookup result of the first map information and a P bit value and the second map information and the 2nd P bit value.
2. mapping request responding method as claimed in claim 1 is characterized in that:
Described MS continues the mapping response handling process of these two map informations, comprising:
MS finds the first map information and a P bit value and the second map information and the 2nd Pbit value as described, and a Pit value and the 2nd P bit value all represent MS can proxy mapping response, described MS is encapsulated in the map information of this MEID to the map information of SEID and this SEID to ERLOC in the mapping response message and returns to described ITR.
3. mapping request responding method as claimed in claim 1 is characterized in that:
Described MS continues the mapping response handling process of these two map informations, comprising:
As described MS find the first map information and expression MS can proxy mapping the one Pbit value of response, and the 2nd P bit value that cannot proxy mapping responds of the second map information and expression MS;
Described MS returns the first mapping response message that carries the first map information to described ITR, and to the second mapping request message that exit tunnel router (ETR) transmission corresponding to this ERLOC encapsulates, ask described ETR to return the second mapping response message that carries the second map information to described ITR;
Wherein, described the first mapping response message, the second mapping response message and second shine upon all to carry in the request message and represent that mapping response message number is 2 number indicia.
4. mapping request responding method as claimed in claim 1 is characterized in that:
Described MS continues the mapping response handling process of these two map informations, comprising:
As described MS find the first map information and expression MS cannot proxy mapping the one Pbit value of response, and the 2nd P bit value that can proxy mapping responds of the second map information and expression MS;
Described MS returns the second mapping response message that carries the second map information to described ITR, and to the 3rd mapping request message that described MN sends encapsulation, asks described MN to return the first mapping response message that carries the first map information to described ITR;
Wherein, described the first mapping response message, the second mapping response message and the 3rd shine upon all to carry in the request message and represent that mapping response message number is 2 number indicia.
5. mapping request responding method as claimed in claim 1 is characterized in that:
Described MS continues the mapping response handling process of these two map informations, comprising:
As described MS find the first map information and expression MS cannot proxy mapping the one Pbit value of response, and the 2nd P bit value that cannot proxy mapping responds of the second map information and expression MS;
Described MS asks described ETR to return the second mapping response message that carries the second map information to described ITR to the second mapping request message that ETR corresponding to this ERLOC sends encapsulation; Described MS also sends the 3rd mapping request message of encapsulation to described MN, ask described MN to return the first mapping response message that carries the first map information to described ITR;
Wherein, all carrying expression mapping response message number in described the first mapping response message, the second mapping response message, the second mapping request and the 3rd mapping request message is 2 number indicia.
6. the map information acquisition methods of a position-based and identity separated protocol comprises:
Entrance tunnel router (ITR) sends the mapping request message that carries mobile node endpoint identifier (MEID) to mapped system, and map information corresponding to this MEID searched in request;
After described ITR receives corresponding first of this mapping request message mapping response message, as judge that not having indication response message number in this first mapping response message is 2 number indicia, represent that then described ITR has received all map informations, finish.
7. map information acquisition methods as claimed in claim 6 is characterized in that:
After described ITR receives first mapping response message corresponding to this mapping request message, as judge that having indication response message number in this first mapping response message is 2 number indicia, then ITR starts a timer, the mapping request time of delay that the timing of this timer equals to allow, described ITR is another mapping response message as receiving that this mapping request message is corresponding in this timing, finish, otherwise again send the mapping request message to described mapped system.
8. the mapping server of a position-based and identity separated protocol is characterized in that, comprising:
The message receiving element is used for receiving the first mapping request message that carries mobile node endpoint identifier (MEID) that entrance tunnel router (ITR) sends;
The information searching unit, the first map information and the corresponding first agent that are used for identifying to the position at this MEID of local data library lookup are shone upon response flag bit (P bit) value, as find, judge this station location marker website endpoint identifier (SEID) whether this MS safeguards that finds, in this way, in local data base, search this SEID to the second map information of exit tunnel router route location identifier (ERLOC) and the 2nd corresponding P bit value;
The response processing unit is used for the lookup result according to the first map information and a P bit value and the second map information and the 2nd P bit value, continues the mapping response handling process of these two map informations.
9. mapping server as claimed in claim 8 is characterized in that:
Described response processing unit continues the mapping response handling process of these two map informations, comprise: find the first map information and a P bit value and the second map information and the 2nd P bit value such as the information searching unit, and a Pit value and the 2nd P bit value all represent MS can proxy mapping response, then the map information of this MEID to the map information of SEID and this SEID to ERLOC is encapsulated in the mapping response message and returns to described ITR.
10. mapping server as claimed in claim 8 is characterized in that:
Described response processing unit continues the mapping response handling process of these two map informations, comprise: as the information searching unit find the first map information and expression MS can proxy mapping the one P bit value of response, and second map information and expression MS cannot proxy mapping the 2nd P bit value of response, then return the first mapping response message that carries the first map information to described ITR, and send the second mapping request message of encapsulation to exit tunnel router (ETR) corresponding to this ERLOC; All carry in described the first mapping response message and the second mapping request message and represent that mapping response message number is 2 number indicia.
11. mapping server as claimed in claim 8 is characterized in that:
Described response processing unit continues the mapping response handling process of these two map informations, comprise: as the information searching unit find the first map information and expression MS cannot proxy mapping the one Pbit value of response, and second map information and expression MS can proxy mapping the 2nd P bit value of response, then return the second mapping response message that carries the second map information to described ITR, and send the 3rd mapping request message of encapsulation to described MN; All carry in described the second mapping response message and the 3rd mapping request message and represent that mapping response message number is 2 number indicia.
12. mapping server as claimed in claim 8 is characterized in that:
Described response processing unit continues the mapping response handling process of these two map informations, comprise: as the information searching unit find the first map information and expression MS cannot proxy mapping the one Pbit value of response, and second map information and expression MS cannot proxy mapping the 2nd P bit value of response, then send the second mapping request message of encapsulation to ETR corresponding to this ERLOC, send the 3rd mapping request message of encapsulation to described MN; Wherein, described the second mapping request and the 3rd is shone upon all to carry in the request message and is represented that mapping response message number is 2 number indicia.
13. the entrance tunnel router (ITR) of a position-based and identity separated protocol is characterized in that, comprising:
Packet sending unit is used for sending the mapping request message that carries mobile node endpoint identifier (MEID) to mapped system, and map information corresponding to this MEID searched in request;
Message receives and processing unit, be used for after receiving first mapping response message corresponding to this mapping request message, as judge that it is 2 number indicia that there is not indication response message number in the response message in this first mapping, and then represent described all map informations that received, finish.
14. entrance tunnel router as claimed in claim 13 is characterized in that:
After described message reception and processing unit receive first mapping response message corresponding to this mapping request message, as judge that having indication response message number in this first mapping response message is 2 number indicia, then start a timer, another mapping response message as receiving that this mapping request message is corresponding in the timing of this timer, finish, otherwise, notify described packet sending unit again to send the mapping request message to described mapped system;
Described packet sending unit also is used for again sending the mapping request message to described mapped system after the described notice of receiving message reception and processing unit.
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| CN201110301862.4A CN103037360B (en) | 2011-09-28 | 2011-09-28 | Mapping request response, information getting method and relevant device based on LISP |
| PCT/CN2012/079810 WO2013044691A1 (en) | 2011-09-28 | 2012-08-08 | Lisp-based mapping request response, information acquiring method and related device |
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| CN201110301862.4A CN103037360B (en) | 2011-09-28 | 2011-09-28 | Mapping request response, information getting method and relevant device based on LISP |
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| CN105530325A (en) * | 2014-09-30 | 2016-04-27 | 杭州华三通信技术有限公司 | Locator/identity separation protocol host migration method and device |
| CN105591811A (en) * | 2015-10-23 | 2016-05-18 | 杭州华三通信技术有限公司 | Mapping server restart recovery method and device in LISP |
| CN105591918A (en) * | 2015-08-31 | 2016-05-18 | 杭州华三通信技术有限公司 | Mapping registration method and device in locator/identity separation protocol (LISP) network |
| CN106130907A (en) * | 2016-05-11 | 2016-11-16 | 杭州华三通信技术有限公司 | Implementation method that a kind of LISP networking is dual-homed and device |
| WO2017190693A1 (en) * | 2016-05-06 | 2017-11-09 | Huawei Technologies Co., Ltd. | Predictive routing for mobility |
| US10554551B2 (en) | 2016-11-11 | 2020-02-04 | Futurewei Technologies, Inc. | Method to optimize mapping for multiple locations of a device in mobility |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101534240B (en) * | 2008-03-14 | 2012-04-25 | 华为技术有限公司 | Method, system and device for sending mapping information |
| KR101225185B1 (en) * | 2009-10-23 | 2013-01-22 | 한국전자통신연구원 | Method for converting network address |
| CN102088390B (en) * | 2009-12-08 | 2014-12-10 | 中兴通讯股份有限公司 | Implementation method of user mobility |
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| CN105591918B (en) * | 2015-08-31 | 2019-04-05 | 新华三技术有限公司 | Mapping register method and device in position and mark separated protocol network |
| CN105591918A (en) * | 2015-08-31 | 2016-05-18 | 杭州华三通信技术有限公司 | Mapping registration method and device in locator/identity separation protocol (LISP) network |
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| CN105591811A (en) * | 2015-10-23 | 2016-05-18 | 杭州华三通信技术有限公司 | Mapping server restart recovery method and device in LISP |
| WO2017190693A1 (en) * | 2016-05-06 | 2017-11-09 | Huawei Technologies Co., Ltd. | Predictive routing for mobility |
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| US11452025B2 (en) | 2016-05-06 | 2022-09-20 | Futurewei Technologies, Inc. | Predictive routing for mobility |
| CN106130907A (en) * | 2016-05-11 | 2016-11-16 | 杭州华三通信技术有限公司 | Implementation method that a kind of LISP networking is dual-homed and device |
| CN106130907B (en) * | 2016-05-11 | 2019-08-06 | 新华三技术有限公司 | A kind of implementation method that LISP networking is dual-homed and device |
| US10554551B2 (en) | 2016-11-11 | 2020-02-04 | Futurewei Technologies, Inc. | Method to optimize mapping for multiple locations of a device in mobility |
| CN113381920A (en) * | 2020-03-09 | 2021-09-10 | 中国移动通信有限公司研究院 | Data transmission method, node and storage medium |
Also Published As
| Publication number | Publication date |
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| CN103037360B (en) | 2017-03-29 |
| WO2013044691A1 (en) | 2013-04-04 |
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