CN102611761B - PMIPv6 agreements support the method and system of IPv6 prefix assignments - Google Patents
PMIPv6 agreements support the method and system of IPv6 prefix assignments Download PDFInfo
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- CN102611761B CN102611761B CN201110023250.3A CN201110023250A CN102611761B CN 102611761 B CN102611761 B CN 102611761B CN 201110023250 A CN201110023250 A CN 201110023250A CN 102611761 B CN102611761 B CN 102611761B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
Abstract
The invention discloses the method and system that a kind of PMIPv6 agreements support IPv6 prefix assignments, the technical problem for how supporting IPv6 prefix assignments for solving PMIPv6.The present invention in mobile node by DHCPv6 prefix delegations flow to obtain IPv6 prefixes when, by DHCPv6 prefix delegations trigger flow Mobile Access Gateway MAG and local mobile anchor LMA carry out delegated prefix and PMIPv6 binding renewal list entry and PMIPv6 banding cache list items between associating.It can be avoided in the prior art by the present invention, MAG and/or LMA do not perceive the situation generation that the change of IPv6 prefixes causes message of the forwarding comprising delegated prefix to fail, realize support of the PMIPv6 agreements to IPv6 prefix assignments.
Description
Technical field
Before the communications field, more particularly to a kind of Proxy Mobile Internet Protocol version 6 (IPv6) support IPv6
Sew the method and system of distribution.
Background technology
Proxy mobile IPv 6 agreement (Proxy Mobile IPv6, PMIPv6) is a kind of network mobile IP management
Agreement, PMIPv6 do not need mobile device to participate in any mobile management work, are responsible for user equipment mobile management by network, move
Dynamic equipment does not perceive the influence of three layers of connection of moving belt in itself.For mobile node (Mobility Node, MN),
No matter where is movement, MN thinks oneself on home link (Home Link).3GPP as shown in Figure 1 is based on PMIPv6 nets
Network framework and corresponding interface.PMIPv6 key node and function is as follows：
Local mobile anchor (Local Mobility Anchor, LMA)：For the home agent (Home of mobile node
Agent), the topological anchor point of MN home address, the binding route of mobile node is managed.Packet Data Network's net in 3GPP networks
Close (PDN GW) and LMA functions are provided, the data forwarding being responsible between MN and Packet Data Network.
Mobile Access Gateway (Mobile Access Gateway, MAG)：The Internet change that shielding mobile handoff is brought,
Act on behalf of the work that MN completes binding renewal.In the 3GPP network architectures, corresponding network element gateway Serving GW (S5/8),
The non-3 gpp IP access network Trusted Non-3GPP IPAccess (S2a) of trust, evolution packet data gateway ePDG (S2b)
MAG functions are provided.
Pass through agent binding update messages (Proxy Binding Update, PBU) and agent binding between LMA and MAG
Confirmation message (Proxy Binding Acknowledgement, PBA), which is realized, acts on behalf of mobile management.PBU is sent to by MAG
LMA, PBA are sent to MAG by LMA, and two message are to appearance with message.MAG is by PBU by oneself agent address and use
For family equipment MN home address binding relationship to LMA, LMA preserves up-downgoing report of the corresponding relation so as to correct route forwarding MN
Text.PBU is mainly used in binding renewal, and binding is cancelled in the renewal of binding cycle, and corresponding LMA is true by sending PBA message to MAG
Recognize PBU requests.
DHCP (Dynamic Host Configuration Protocol, DHCP) provides a kind of IP
Parameter automatically configures mechanism, and main frame can be that the main frame in network automatically configures IP parameters, such as IP address by DHCP protocol,
Dns server address, default gateway address etc..DHCP operational modes are a kind of client server (Client-Server, CS) moulds
Formula, i.e. network host run dhcp client module, and it is DHCP Server modules to dispose Dynamic Host Configuration Protocol server in corresponding network.
DHCP also supports DHCP Relay repeater modes, for forwarding the dhcp message of user to Dynamic Host Configuration Protocol server.Main frame does not differentiate between
Dhcp relay agent (DHCP Relay Agent) and Dynamic Host Configuration Protocol server (DHCP Server), it is believed that dhcp message asks object
That is DHCP Server.
In the 3GPP network architectures, S2a interfaces define is connected to evolution packet core by the non-3 gpp IP access networks of trust
The heart (EPC), as shown in figure 1, S2a is based on PMIPv6 mobility management protocols.Under S2a scenes, non-3 gpp IP access networks are supported
Dhcp server functionality, user equipment can (DHCP protocol for supporting IPv4 and the DHCP for supporting IPv6 be assisted by DHCPv4/v6
View) message asks IP parameters, such as DNSv4/v6 server address etc. to DHCPv4v6 servers (non-3 gpp IP access networks).
It is that MN distributes prefix length that 3GPP introduces prefix delegation and issues the support of (prefix delegation) function by DHCPv6 at present
It is shorter than 64 IPv6 prefixes, and then the MN for possessing Router functions can be enable to realize sub-network division to its subnet behind
Manage and support stateless (Stateless) IPv6 addresses to distribute (can also be DHCP modes).
How Current standards on GTP-based S5/8 and DSMIP-based S2c to support prefix
Delegation is illustrated.How 3GPP supports prefix for PMIP-based S5/8, S2a and S2b
Delegation is currently space state, i.e. PMIPv6 supports prefix delegation also to there is no open scheme at present.May
Problem be present：Before mobile terminal can obtain IPv6 by DHCPv6 modes to commission router (delegating router)
Sew, DHCPv6 operates in user plane, can be described as PMIPv6 network nodes MAG and LMA transparent.When terminal is in current IP
After extra IPv6 prefixes (home network prefix for being different from PMIPv6) are obtained in connection, rear extended meeting, which uses, belongs to the prefix
IPv6 addresses are communicated, and MAG and LMA do not perceive the IPv6 prefixes now, i.e. do not have in MAG and the local forward tables of LMA
This prefix information corresponding to having, it thus may result in message of the forwarding comprising delegated prefix (delegated prefix) and lose
Lose, for example, MAG receive from MN using messages of the delegated prefix as source address when, probably due to searching less than corresponding
Binding association and dropping packets；Or when MAG does not do source address and home network prefix (Home Network to uplink message
Prefix matching), LMA receive the report sent from corresponding node (corresponding node) opposite end communication node to MN
Text, when message destination address includes delegated prefix, LMA may abandon because can not find corresponding binding association
Message.
The content of the invention
In view of this, a kind of method for supporting IPv6 prefix assignments it is a primary object of the present invention to provide PMIPv6 agreements
And system, the technical problem for how supporting IPv6 prefix assignments for solving PMIPv6.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of Proxy Mobile Internet Protocol version 6 (PMIPv6) agreement supports the method for IPv6 prefix assignments, this method bag
Include：
When mobile node (MN) is by supporting IPv6 dynamic host configuration protocol DHCP (DHCPv6) prefix delegation flow
During obtaining IPv6 prefixes, by DHCPv6 prefix delegation trigger flow Mobile Access Gateways (MAG) carry out delegated prefix with
Association and triggering local mobile anchor (LMA) between PMIPv6 binding renewal list entries carry out delegated prefix and tied up with PMIPv6
Determine the association between buffer list entry.
Based on an of the invention specific embodiment, it is described entrusted by DHCPv6 prefix delegation trigger flows MAG and LMA before
Sew associating between PMIPv6 bindings renewal list entry and PMIPv6 banding cache list items to refer to：
In the DHCPv6 prefix delegations flow, MAG as DHCPv6 relay agents MN and DHCPv6 servers it
Between transfer DHCPv6 message, DHCPv6 message is transmitted to DHCPv6 servers by LMA, and DHCPv6 message is as PMIPv6 user
Face data are sent to DHCPv6 servers through PMIP tunnels, and LMA can identify DHCPv6 message；
After MN, which completes DHCPv6 prefix delegation flows, gets delegated prefix, MAG and LMA are about under DHCPv6 flows certainly
The delegated prefix of hair is associated with respective local PMIPv6 bindings renewal list entry and local PMIPv6 banding cache list items
In.
Further, the DHCPv6 prefix delegations flow is specially：
MN is connected to network, and PMIP tunnels are established between MAG and LMA；
MN sends DHCPv6 Solicit requests to MAG, and the association identification of one or more delegated prefix is included in request,
DHCPv6 request messages are encapsulated in PMIP tunnels after receiving request and pass to LMA by MAG, are sent to after LMA decapsulations
DHCPv6 servers；
After DHCPv6 servers receive DHCPv6 Solicit requests, issued by DHCPv6 Advertize notice messages
IPv6 prefix informations are to MAG, and LMA, which receives message to be encapsulated in PMIP tunnels after the notice message, is transmitted to MAG, and MAG is offseted
Breath carries out being sent to MN after respective handling is done in decapsulation；
MN sends DHCPv6 Request requests to MAG, before the request message includes the IPv6 that the notice message issues
Sew information, MAG carries out processing post package to message and LMA is sent in PMIP tunnels, and LMA is sent to after message is decapsulated
DHCPv6 servers；
DHCPv6 servers, which receive to act on behalf of to MAG after DHCPv6 Request are asked, sends DHCPv6Reply response messages,
LMA, which receives message to be encapsulated in PMIP tunnels after the response message, is transmitted to MAG, and MAG carries out decapsulation to message and does corresponding position
MN is sent to after reason.
Based on an of the invention specific embodiment, it is described entrusted by DHCPv6 prefix delegation trigger flows MAG and LMA before
Sew associating between PMIPv6 bindings renewal list entry and PMIPv6 banding cache list items to refer to：
In the DHCPv6 prefix delegations flow, MAG takes as DHCPv6 relay agent's node or as DHCPv6
Business device, DHCPv6 message is by LMA transparent transmissions or is not forwarded by LMA；
MAG triggers the PMIPv6 Signalling exchanges between LMA when DHCPv6 prefix delegations flow is completed, and is notified to LMA
Delegated prefix information, so that the PMIPv6 banding cache list items that LMA renewals are local, by delegated prefix and PMIPv6 banding caches
List item associates, meanwhile, MAG also carries out the association of delegated prefix and PMIPv6 binding renewal list entries.
Further, MAG triggers the PMIPv6 Signalling exchanges between LMA when DHCPv6 prefix delegations flow is completed,
Realize that the step of delegated prefix and PMIPv6 bind the association for updating list entry and PMIPv6 banding cache list items is specially：
MAG sends agent binding more after the DHCPv6 Reply response messages of DHCPv6 servers transmission are received, to LMA
New PBU message, the delegated prefix information issued in DHCPv6 prefix delegation flows is included in PBU message and to be associated
PMIPv6 banding cache list item informations；
After LMA receives PBU message, agent binding confirmation PBA message, and the delegated prefix information that will be issued are sent to MAG
Associated with PMIPv6 banding cache list items；
MAG updates local PMIPv6 bindings renewal list entry, by delegated prefix and PMIPv6 after PBA message is received
Binding renewal list entry association.
Further, in the case where MAG is as DHCPv6 server, MAG completes in DHCPv6 prefix delegations flow
When triggering and LMA between PMIPv6 Signalling exchanges, realize delegated prefix and PMIPv6 binding renewal list entries and PMIPv6
The step of association of banding cache list item is specially：
MAG sends PBU message before DHCPv6 Reply message is sent to MN to LMA, and DHCPv6 is included in PBU message
The delegated prefix information issued in prefix delegation flow and the PMIPv6 banding cache list item informations to be associated；
After LMA receives PBU message, PBA message is sent to MAG, and by the delegated prefix issued and PMIPv6 banding caches
List item associates；
MAG updates local PMIPv6 bindings renewal list entry, by delegated prefix and PMIPv6 after PBA message is received
Binding renewal list entry association.
The method for supporting IPv6 prefix assignments based on a kind of proxy mobile IPv 6 agreement provided by the invention, the present invention also carry
Going out the system that a kind of proxy mobile IPv 6 agreement supports IPv6 prefix assignments, the system includes MN, MAG, LMA, Dynamic Host Configuration Protocol server,
The MN is used to obtain IPv6 prefixes by DHCPv6 prefix delegations flow；
The MAG is used to carry out delegated prefix and PMIPv6 binding renewal row under the triggering of DHCPv6 prefix delegation flows
Association between table list item；
The LMA is used to carry out delegated prefix and PMIPv6 banding cache tables under the triggering of DHCPv6 prefix delegation flows
Association between.
Further, the MAG is additionally operable to transfer between MN and DHCPv6 servers as DHCPv6 relay agents
DHCPv6 message, the LMA are additionally operable to forward DHCPv6 message, DHCPv6 message conducts between MAG and DHCPv6 servers
PMIPv6 user face datas are sent to DHCPv6 servers through PMIP tunnels；
After DHCPv6 prefix delegation flows are completed, MAG and LMA are about to what DHCPv6 flows issued certainly by the MAG and LMA
Delegated prefix is associated with respective local PMIPv6 bindings renewal list entry and local PMIPv6 banding cache list items.
Further, the MAG is additionally operable to transfer between MN and DHCPv6 servers as DHCPv6 relay agents
DHCPv6 message, DHCPv6 message is by LMA transparent transmissions or is not forwarded by LMA；
The MAG is additionally operable to the PMIPv6 Signalling exchanges between triggering and LMA when DHCPv6 prefix delegations flow is completed,
Notify delegated prefix information to LMA so that the PMIPv6 banding cache list items that LMA renewals are local, by delegated prefix and
PMIPv6 banding caches list item associates, while MAG updates local PMIPv6 bindings renewal list entry after PBA message is received,
Delegated prefix is bound into renewal list entry with PMIPv6 to associate.
The present invention in mobile node by DHCPv6 prefix delegations flow to obtain IPv6 prefixes when, entrusted by DHCPv6 prefixes
Hold in the palm trigger flow Mobile Access Gateway MAG and local mobile anchor LMA carry out delegated prefix and PMIPv6 banding caches list item it
Between association.It can be avoided in the prior art by the present invention, MAG and/or LMA do not perceive the change of IPv6 prefixes and cause forwarding to be wrapped
The situation of message failure containing delegated prefix occurs, and realizes support of the PMIPv6 agreements to IPv6 prefix assignments.
Brief description of the drawings
Fig. 1 is that 3GPP is based on the PMIPv6 network architectures and corresponding interface；
Fig. 2 is the schematic flow sheet of embodiment 1；
Fig. 3 is the schematic flow sheet of embodiment 2；
Fig. 4 is the schematic flow sheet of embodiment 3.
Embodiment
It is by the following examples and referring to the drawings, right for the object, technical solutions and advantages of the present invention are more clearly understood
The present invention is further described.
The present invention is further explained below by three embodiments.Embodiment 1 and embodiment 2 belong to DHCPv6
The scene that Relay functions are operated on MAG, embodiment 3 are DHCPv6 Server (i.e. Delegating Router commission routes
Device) scene that operates on MAG of function.
Embodiment 1
As shown in Fig. 2 mobile node MN is connected to network, MAG also serve as simultaneously DHCPv6 Relay agencies in MN and
Switching DHCPv6 message between DHCPv6 Server, it is assumed here that DHCPv6 message needs to be transmitted to DHCPv6 by LMA
Server, i.e. DHCPv6 Server behind LMA (or close and set with LMA), DHCPv6 message is as PMIPv6 user plane numbers
DHCPv6 Server are sent to according to through PMIP tunnels.Specific implementation step is as follows：
Step 201：MN is connected to network, and network uses mobility management protocols of the PMIPv6 as MN, between MAG and LMA
Establish PMIP tunnels and complete the IP connections based on PMIPv6 between MN and network；
Step 202：MN acts on behalf of to DHCPv6 Relay sends DHCPv6 Solicit requests, and one is included in request message
Or multiple IA_PD option (s) (association identification of delegated prefix) are used to carry the IPv6 prefix informations to be asked, DHCPv6
Relay (MAG) receives the DHCPv6 Relay agent functionalitys defined after request message according to RFC3315 and handled, after will
DHCPv6 request messages, which are encapsulated in PMIP tunnels, passes to LMA, and DHCPv6 Server are sent to after LMA decapsulations
(Delegating Router)；
Step 203：DHCPv6 Server (Delegating Router) receive request message, after this authentication in DHCPv6
IA_PD option (s) comprising the IPv6 prefix informations issued in Advertize notice messages are sent to DHCPv6 Relay
Agency, LMA, which receives message to be encapsulated in PMIP tunnels after the notice message, is transmitted to DHCPv6 Relay agencies (MAG), MAG pairs
Message carries out being sent to MN after respective handling is done in decapsulation；
Step 204：MN acts on behalf of transmission DHCPv6 Request request messages to DHCPv6 Relay and included from Advertize
The IA_PD option (s) of copy in message are sent to MAG, and MAG carries out processing post package to message and sent out in PMIP tunnels
Send, LMA is sent to Delegating Router after message is decapsulated；
Step 205：DHCPv6 Server (Delegating Router) receive Request message, after this authentication to
DHCPv6 Relay agencies send DHCPv6 Reply response messages, and LMA is received and message is encapsulated in into PMIP after the response message
DHCPv6 Relay agencies (MAG) are transmitted in tunnel, MAG carries out being sent to MN after respective handling is done in decapsulation to message；
Step 206：Because MAG and LMA are both participated in DHCPv6 prefix Delegation flows, therefore now
MAG and LMA can perceive the completion of DHCPv6 prefix Delegation flows, to ensure that follow-up MN can have successfully received
Delegated Prefix IPv6 messages, i.e., corresponding message transmit in current PMIP tunnels, and MAG and LMA will automatically more
The delegated prefix that DHCPv6 flows issue is associated with local PMIPv6 and tied up by new local PMIPv6 banding cache lists, MAG
Surely list entry (Binding Update list Entry, BULE), the delegated prefix that LMA issues DHCPv6 flows are updated
It is associated with local PMIPv6 banding cache list items, the PMIP tunnels of list item and DHCPv6 the message transmission are man-to-man
Relation.
Explanation：It is (quick that MN may also include RAPID_COMMIToption in first DHCPv6 Solicit message
Confirm option), quick DHCPv6 flows are triggered, now Delegating Router directly reply DHCPv6Reply message, should
IPv6 prefix delegation prefix informations are included in message.Example 2 below and 3 also has identical situation.
Embodiment 2
As shown in figure 3, mobile node MN is connected to network, MAG also serve as simultaneously DHCPv6 Relay agencies in MN and
Between DHCPv6 Server transfer DHCPv6 message, here DHCPv6 Server positions be not limited may in any position,
Such as DHCPv6 Server may be behind LMA (or close and set with LMA), it is also possible to which, in local network, the latter LMA can not
DHCPv6 flows are perceived, i.e. DHCPv6 message is without going past LMA.Now need MAG triggering PMIP Signalling exchanges flow notices
LMAdelegated prefix information.Specific implementation step is as follows：
Step 301, MN is connected to network, and network uses mobility management protocols of the PMIP as MN, built between MAG and LMA
Complete the IP connections based on PMIP between MN and network in vertical PMIP tunnels；
Step 302, MN acts on behalf of to DHCPv6 Relay sends DHCPv6 Solicit requests, and one is included in request message
Or multiple IA_PD option (s) (association identification of delegated prefix) carry the IPv6 prefix informations to be asked, DHCPv6
Relay (MAG) receives the DHCPv6Relay agent functionalitys defined after request message according to RFC3315 and handled, after will
DHCPv6 request messages are sent to Delegating Router；
Step 303, DHCPv6 Server (Delegating Router) receive request message, after this authentication in DHCPv6
IA_PD option (s) comprising the IPv6 prefix informations issued in Advertize notice messages are sent to DHCPv6 Relay
Agency, MAG are sent to MN after carrying out respective handling to message；
Step 304, MN acts on behalf of transmission DHCPv6 Request request messages to DHCPv6 Relay and included from Advertize
The IA_PD option (s) of copy in message are sent to MAG, and MAG is sent to Delegating after handling message
Router；
Step 305, DHCPv6 Server (Delegating Router) receive Request message, after this authentication to
DHCPv6 Relay agencies send DHCPv6 Reply (MAG) response message；
Step 306, MAG has perceived network after Reply message is received and successfully confirms DHCPv6 prefix
Delegation flows, MAG send agent binding update PBU message to LMA, DHCPv6 prefix are included in message
Commission IPv6 prefix informations (IA_PD option (s) letters corresponded in Reply message issued in delegation flows
Breath) with the PMIPv6 banding cache list item informations to be associated；
Step 307, LMA is received after PBU message verified, to MAG send agent binding confirmation PBA message carry out it is true
Recognize, the local PMIPv6 banding cache list items of LMA renewals, by delegated prefix (es) and PMIPv6 banding cache list items
Association；
Step 308, MAG is received and is forwarded DHCPv6 Reply message to MN after PBA message, updates local PMIPv6 bindings more
New list entry, delegated prefix delegated prefix (es) and PMIPv6 are bound into renewal list entry and associated.MAG also may be used
It can not wait and receive PBA message and directly forward DHCPv6Reply message to MN, the present invention is not particularly limited.
Embodiment 3
As shown in figure 4, mobile node MN is connected to network, MAG also serves as DHCPv6 Server simultaneously and issued for MN
Delegated prefix are issued.Specific implementation step is as follows：
Step 401, MN is connected to network, and network uses mobility management protocols of the PMIP as MN, built between MAG and LMA
Complete the IP connections based on PMIP between MN and network in vertical PMIP tunnels；
Step 402, MN sends DHCPv6 Solicit requests to Delegating Router, and one is included in request message
Individual or multiple IA_PD option (s) (association identification of delegated prefix) carry the IPv6 prefix informations to be asked；
Step 403, DHCPv6 Server (Delegating Router) receive request message, after this authentication in DHCPv6
IA_PD option (s) comprising the IPv6 prefix informations issued in Advertize notice messages are sent to MN；
Step 404, MN acts on behalf of transmission DHCPv6 Request request messages to DHCPv6 Relay and included from Advertize
The IA_PD option (s) of copy in message are sent to Delegating Router；
Step 405；Delegating Router (MAG) send PBU message, message before Reply message is sent to LMA
In be included in the commission IPv6 prefix informations that issue in DHCPv6 prefix delegation flows and (correspond to Reply message
In IA_PD option (s) information) with the PMIPv6 banding cache list item informations to be associated；
Step 406, LMA is received after PBU message verified, is sent PBA message to MAG and is confirmed, LMA renewals are local
PMIPv6 banding cache list items, delegated prefix (es) are associated with PMIPv6 banding cache list items；
Step 407, MAG is received and is sent DHCPv6 Reply message to MN after PBA message, updates local PMIPv6 bindings more
New list entry, delegated prefix (es) and PMIPv6 are bound into renewal list entry and associated.MAG may not also wait receipts
DHCPv6 Reply message directly is forwarded to MN to PBA message, the present invention is not particularly limited.
In order to realize above-mentioned embodiment of the method, other embodiment of the invention additionally provides a kind of proxy mobile IPv 6 association
The system that view supports IPv6 prefix assignments.It need to separately illustrate first, because following embodiments is to realize foregoing method
Embodiment, therefore the comprising modules in the system are provided to realize each step of preceding method and set, but the present invention is not limited to
Following embodiments, system, device and the module of any achievable above method should all be contained in protection scope of the present invention.And
And in the following description, omitted herein with preceding method identical content, to save length.
Embodiment 4
Based on embodiment of the method described above, the present invention proposes that a kind of proxy mobile IPv 6 agreement supports IPv6 prefix assignments
System, the system includes MN, MAG, LMA, Dynamic Host Configuration Protocol server：
The MN is used to obtain IPv6 prefixes by DHCPv6 prefix delegations flow；The MAG relays as DHCPv6
Agency switching DHCPv6 message, DHCPv6 message between MN and DHCPv6 servers are transmitted to DHCPv6 servers by LMA；
Or MAG, as DHCPv6 relay agent's node or as DHCPv6 servers, DHCPv6 message is by LMA transparent transmissions or does not pass through
LMA is forwarded；MAG is additionally operable to carry out delegated prefix and PMIPv6 binding renewal lists under the triggering of DHCPv6 prefix delegation flows
Association between list item；LMA is additionally operable to carry out delegated prefix and PMIPv6 bindings under the triggering of DHCPv6 prefix delegation flows
Association between buffer list entry.
Transferred in MAG as DHCPv6 relay agents between MN and DHCPv6 servers DHCPv6 message, DHCPv6 disappears
Breath be transmitted to DHCPv6 servers by LMA in the case of, the MAG be additionally operable to as DHCPv6 relay agents MN with
Switching DHCPv6 message, the LMA are additionally operable to forward DHCPv6 between MAG and DHCPv6 servers between DHCPv6 servers
Message, DHCPv6 message are sent to DHCPv6 servers as PMIPv6 user face datas through PMIP tunnels；The MAG and LMA
After DHCPv6 prefix delegation flows are completed, MAG and LMA from be about to the delegated prefix that DHCPv6 flows issue be associated with it is respective
In local PMIPv6 bindings renewal list entry and local PMIPv6 banding cache list items.
As DHCPv6 relay agent's node or DHCPv6 servers are used as in MAG, DHCPv6 message passes through LMA transparent transmissions
Or in the case of not forwarded by LMA, the MAG is additionally operable to as DHCPv6 relay agents between MN and DHCPv6 servers
Switching DHCPv6 message, DHCPv6 message are transmitted to DHCPv6 servers without the LMA；The MAG is additionally operable to
PMIPv6 Signalling exchanges when DHCPv6 prefix delegations flow is completed between triggering and LMA, delegated prefix information is notified to LMA,
So that the PMIPv6 banding cache list items that LMA renewals are local, delegated prefix are associated with PMIPv6 banding cache list items, simultaneously
MAG updates local PMIPv6 bindings renewal list entry after PBA message is received, by delegated prefix and PMIPv6 binding renewals
List entry associates.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (9)
1. a kind of method that Proxy Mobile Internet Protocol version 6 (PMIPv6) agreement supports IPv6 prefix assignments, it is characterised in that
Including：
When mobile node (MN) is obtained by supporting IPv6 dynamic host configuration protocol DHCP (DHCPv6) prefix delegation flow
When taking IPv6 prefixes, delegated prefix is carried out by DHCPv6 prefix delegation trigger flow Mobile Access Gateways (MAG) and tied up with PMIPv6
Surely update the association between list entry and triggering local mobile anchor (LMA) carries out delegated prefix and PMIPv6 banding cache tables
Association between.
2. according to the method for claim 1, it is characterised in that described by DHCPv6 prefix delegation trigger flows MAG and LMA
Associating between delegated prefix and PMIPv6 bindings renewal list entry and PMIPv6 banding cache list items is carried out to refer to：
In the DHCPv6 prefix delegations flow, MAG turns as DHCPv6 relay agents between MN and DHCPv6 servers
DHCPv6 message is connect, DHCPv6 message is transmitted to DHCPv6 servers by LMA, and DHCPv6 message is as PMIPv6 user plane numbers
DHCPv6 servers are sent to according to through PMIP tunnels, LMA can identify DHCPv6 message；
After MN, which completes DHCPv6 prefix delegation flows, gets delegated prefix, MAG and LMA are about to what DHCPv6 flows issued certainly
Delegated prefix is associated with respective local PMIPv6 bindings renewal list entry and local PMIPv6 banding cache list items.
3. according to the method for claim 2, it is characterised in that the DHCPv6 prefix delegations flow is specially：
MN is connected to network, and PMIP tunnels are established between MAG and LMA；
MN sends DHCPv6 Solicit requests to MAG, and the association identification of one or more delegated prefix, MAG are included in request
Receive that DHCPv6 request messages are encapsulated in PMIP tunnels after asking and pass to LMA, DHCPv6 clothes are sent to after LMA decapsulations
Business device；
After DHCPv6 servers receive DHCPv6 Solicit requests, IPv6 is issued by DHCPv6 Advertize notice messages
Prefix information is to MAG, and LMA, which receives message to be encapsulated in PMIP tunnels after the notice message, is transmitted to MAG, and MAG enters to message
Row decapsulation is sent to MN after doing respective handling；
MN sends DHCPv6 Request requests to MAG, and the request message includes the IPv6 prefixes letter that the notice message issues
Breath, MAG carry out processing post package to message and LMA are sent in PMIP tunnels, and LMA is sent to DHCPv6 after message is decapsulated
Server；
DHCPv6 servers, which receive to act on behalf of to MAG after DHCPv6 Request are asked, sends DHCPv6Reply response messages, LMA
Receive message to be encapsulated in PMIP tunnels after the response message and be transmitted to MAG, MAG is carried out to message after decapsulation does respective handling
It is sent to MN.
4. according to the method for claim 1, it is characterised in that described by DHCPv6 prefix delegation trigger flows MAG and LMA
Associating between delegated prefix and PMIPv6 bindings renewal list entry and PMIPv6 banding cache list items is carried out to refer to：
In the DHCPv6 prefix delegations flow, relay agent nodes or conduct DHCPv6 server of the MAG as DHCPv6,
DHCPv6 message is by LMA transparent transmissions or is not forwarded by LMA；
MAG triggers the PMIPv6 Signalling exchanges between LMA when DHCPv6 prefix delegations flow is completed, and notifies to entrust to LMA
Prefix information, so that the PMIPv6 banding cache list items that LMA renewals are local, by delegated prefix and PMIPv6 banding cache list items
Association, meanwhile, MAG also carries out the association of delegated prefix and PMIPv6 binding renewal list entries.
5. according to the method for claim 4, it is characterised in that MAG triggered when DHCPv6 prefix delegations flow is completed and
PMIPv6 Signalling exchanges between LMA, realize delegated prefix and PMIPv6 bindings renewal list entry and PMIPv6 banding caches
The step of association of list item is specially：
MAG sends agent binding update after the DHCPv6 Reply response messages of DHCPv6 servers transmission are received, to LMA
PBU message, the delegated prefix information issued and the PMIPv6 to be associated in DHCPv6 prefix delegation flows are included in PBU message
Banding cache list item information；
After LMA receives PBU message, agent binding confirmation PBA message is sent to MAG, and by the delegated prefix information issued and
PMIPv6 banding caches list item associates；
MAG updates local PMIPv6 bindings renewal list entry, delegated prefix and PMIPv6 is bound after PBA message is received
Update list entry association.
6. according to the method for claim 4, it is characterised in that in the case where MAG is as DHCPv6 server, MAG
PMIPv6 Signalling exchanges when DHCPv6 prefix delegations flow is completed between triggering and LMA, realize delegated prefix and PMIPv6
Binding renewal list entry and PMIPv6 banding cache list items association the step of be specially：
MAG sends PBU message before DHCPv6 Reply message is sent to MN to LMA, and DHCPv6 prefixes are included in PBU message
Entrust the delegated prefix information issued and the PMIPv6 banding cache list item informations to be associated in flow；
After LMA receives PBU message, PBA message is sent to MAG, and by the delegated prefix issued and PMIPv6 banding cache list items
Association；
MAG updates local PMIPv6 bindings renewal list entry, delegated prefix and PMIPv6 is bound after PBA message is received
Update list entry association.
7. the system that IPv6 prefix assignments are supported based on a kind of proxy mobile IPv 6 agreement that claim 1 methods described is realized,
Including MN, MAG, LMA, Dynamic Host Configuration Protocol server, it is characterised in that
The MN is used to obtain IPv6 prefixes by DHCPv6 prefix delegations flow；
The MAG is used to carry out delegated prefix and PMIPv6 binding renewal list tables under the triggering of DHCPv6 prefix delegation flows
Association between；
The LMA be used to carrying out under the triggering of DHCPv6 prefix delegation flows delegated prefix and PMIPv6 banding caches list item it
Between association.
8. system according to claim 7, it is characterised in that
The MAG is additionally operable to transfer between MN and DHCPv6 servers DHCPv6 message as DHCPv6 relay agents, described
LMA is additionally operable to forward DHCPv6 message between MAG and DHCPv6 servers, and DHCPv6 message is as PMIPv6 user face datas
DHCPv6 servers are sent to through PMIP tunnels；
After DHCPv6 prefix delegation flows are completed, MAG and LMA are about to the commission that DHCPv6 flows issue certainly by the MAG and LMA
Prefix is associated with respective local PMIPv6 bindings renewal list entry and local PMIPv6 banding cache list items.
9. system according to claim 7, it is characterised in that
The MAG is additionally operable to transfer between MN and DHCPv6 servers DHCPv6 message as DHCPv6 relay agents,
DHCPv6 message is by LMA transparent transmissions or is not forwarded by LMA；
The MAG is additionally operable to the PMIPv6 Signalling exchanges between triggering and LMA when DHCPv6 prefix delegations flow is completed, to
LMA notifies delegated prefix information, so that the PMIPv6 banding cache list items that LMA renewals are local, by delegated prefix and PMIPv6
Banding cache list item associates, while MAG updates local PMIPv6 bindings renewal list entry, will entrusted after PBA message is received
Prefix is bound renewal list entry with PMIPv6 and associated.
Priority Applications (2)
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| CN201110023250.3A CN102611761B (en) | 2011-01-20 | 2011-01-20 | PMIPv6 agreements support the method and system of IPv6 prefix assignments |
| PCT/CN2011/084640 WO2012097663A1 (en) | 2011-01-20 | 2011-12-26 | Method and system for pmipv6 protocol to support ipv6 prefix distribution |
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| CN201110023250.3A CN102611761B (en) | 2011-01-20 | 2011-01-20 | PMIPv6 agreements support the method and system of IPv6 prefix assignments |
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| CN103686671B (en) * | 2012-09-14 | 2019-01-18 | 中兴通讯股份有限公司 | A kind of method and system of notice access net location information |
| JP6029449B2 (en) * | 2012-12-17 | 2016-11-24 | 三菱電機株式会社 | Smart meter system, management router and meter |
| CN103249026B (en) * | 2013-05-23 | 2015-09-16 | 中国科学院计算机网络信息中心 | A kind of method supporting HNP to renumber in PMIPv6 |
| CN104883408A (en) * | 2014-02-28 | 2015-09-02 | 中兴通讯股份有限公司 | Method of processing NAT64 prefix, network equipment and DHCPv server |
| CN105827746A (en) * | 2016-03-11 | 2016-08-03 | 中国互联网络信息中心 | Method for active reconfiguration of network prefix in agent mobile IPv6 |
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| CN101449529A (en) * | 2006-05-19 | 2009-06-03 | 华为技术有限公司 | Using dhcpv6 and aaa for mobile station prefix delegation and enhanced neighbor discovery |
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| CN101449529A (en) * | 2006-05-19 | 2009-06-03 | 华为技术有限公司 | Using dhcpv6 and aaa for mobile station prefix delegation and enhanced neighbor discovery |
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| Title |
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| DHCPv6 Based Home Network Prefix Delegation For PMIPv6;SARIKAYA,B.等;《draft-sarikaya-netlmm-prefix-delegation-01.txt》;20071109;第5页第1行-第6页第6行 * |
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