WO2017000122A1 - 一种双栈地址管理方法及第一网元 - Google Patents

一种双栈地址管理方法及第一网元 Download PDF

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Publication number
WO2017000122A1
WO2017000122A1 PCT/CN2015/082654 CN2015082654W WO2017000122A1 WO 2017000122 A1 WO2017000122 A1 WO 2017000122A1 CN 2015082654 W CN2015082654 W CN 2015082654W WO 2017000122 A1 WO2017000122 A1 WO 2017000122A1
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Prior art keywords
network element
internet protocol
protocol type
transmission path
type address
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PCT/CN2015/082654
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English (en)
French (fr)
Inventor
龙思锐
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2015/082654 priority Critical patent/WO2017000122A1/zh
Priority to CN201580033398.1A priority patent/CN106664326A/zh
Publication of WO2017000122A1 publication Critical patent/WO2017000122A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2101/00—Indexing scheme associated with group H04L61/00
    • H04L2101/60—Types of network addresses
    • H04L2101/686—Types of network addresses using dual-stack hosts, e.g. in Internet protocol version 4 [IPv4]/Internet protocol version 6 [IPv6] networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a dual stack address management method and a first network element.
  • IPv6 Internet Protocol Version 4 (English: Internet Protocol Version 4, IPv4) address was allocated in early 2011, and the global Internet has gradually moved from IPv4 to Internet Protocol version 6 (English: Internet Protocol version) 6, referred to as: IPv6) transition.
  • the operator starts to deploy the network elements in the core network, so that the logical interfaces of the network elements of the core network can support the IPv6 requirements on the basis of supporting IPv4. Therefore, the core network has a network element supporting two types of Internet protocol types (IPv4 address and IPv6 address), which is referred to as a dual-stack network element.
  • the signaling carries the IPv4 address and the IPv6 address of the dual-stack network element.
  • the prior art does not indicate which IP address is used for signaling interaction between the network elements.
  • the embodiment of the present invention provides a dual-stack address management method and a first network element, which are used to implement an IP address used for signaling interaction between dual-stack network elements.
  • an embodiment of the present invention provides a dual stack address management method, including:
  • the first network element determines itself and the second network element to be communicated as a dual-stack network element, and the dual-stack network element is a network element supporting two Internet protocol type addresses;
  • the first network element preferentially sends a session management message to the second network element by using a transmission path corresponding to the first internet protocol type address of the two internet protocol type addresses.
  • the first network element Determine that it is a dual-stack network element, including:
  • the first network element determines that it is a dual-stack network element according to the address configuration information of the local interface; the address configuration information includes a first Internet Protocol type address and a second Internet protocol type address of the first network element.
  • the first network element determining that the second network element is a dual-stack network element includes:
  • the first network element receives a create session request create session request message sent by the third network element, where the create session request message carries the first internet protocol type address and the second internet protocol type address of the second network element.
  • the first network element uses a transmission path corresponding to the first Internet Protocol type address to the second network After the meta sends the session management message, it also includes:
  • the first network element After determining that the session management response message sent by the second network element is sent to indicate that the session management message is successfully received, the first network element adopts a transmission path corresponding to the second Internet protocol type address. The second network element sends a session management message.
  • the first network element uses a transmission path corresponding to the first Internet Protocol type address to the second network Before the meta sends the session management message, it also includes:
  • the first network element determines that the state of the transmission path corresponding to the established first Internet Protocol type address is normal.
  • the method further includes:
  • the first network element Determining, by the first network element, that the status of the transmission path corresponding to the established first Internet Protocol type address is a fault and determining that the status of the transmission path corresponding to the second Internet Protocol type address is normal
  • the first network element sends a session management message to the second network element by using a transmission path corresponding to the second Internet Protocol type address.
  • the first network element determines a state of a transmission path corresponding to the established first Internet Protocol type address, including :
  • the first network element does not receive the response message that the second network element successfully receives the first status confirmation message, and determines that the status of the transmission path corresponding to the first Internet Protocol type address is a fault.
  • the first network element determines a transmission path corresponding to the established second Internet protocol type address Status, including:
  • the network element does not receive the response message that the second network element successfully receives the second status confirmation message, and determines that the status of the transmission path corresponding to the second Internet protocol type address is a fault.
  • the method further includes:
  • the first network element Transmitting, by the first network element, the transmission path corresponding to the second Internet Protocol type address to the
  • the second network element sends the session management message, if it is determined that the state of the transmission path corresponding to the first Internet Protocol address is restored from the fault to normal, the first network element is corresponding to the second Internet protocol type address.
  • the transmission path is switched to send a session management message to the second network element by using a transmission path corresponding to the first Internet Protocol type address.
  • the first Internet protocol type address is IPv6
  • the second internet protocol type address is an IPv4 address.
  • an embodiment of the present invention provides a first network element, including:
  • the processor is configured to determine that the first network element to which the user belongs and the second network element to be communicated are dual-stack network elements, where the dual-stack network element is a network element supporting two Internet protocol type addresses;
  • the transceiver is configured to preferentially send a session management message to the second network element by using a transmission path corresponding to the first internet protocol type address of the two internet protocol type addresses.
  • the processor is configured to determine, according to address configuration information of the local interface, that the first network element to which the network element belongs is a dual-stack network element;
  • the address configuration information includes a first internet protocol type address and a second internet protocol type address of the first network element.
  • the transceiver is further configured to receive a general packet radio service tunneling protocol GTP message sent by the second network element, where the GTP message carries a first internet protocol type address and a second internet protocol type address of the second network element; or
  • create session request message sent by the third network element, where the create session request message carries the first internet protocol type address and the second internet protocol type address of the second network element.
  • the processor is further configured to:
  • the transceiver is further configured to send a session management message to the second network element by using a transmission path corresponding to the second internet protocol type address.
  • the processor is further configured to:
  • the transceiver Before the transceiver sends the session management message to the second network element by using the transmission path corresponding to the first Internet Protocol type address, determining that the state of the transmission path corresponding to the established first Internet Protocol type address is normal.
  • the transceiver is further configured to:
  • the processor determines that the state of the transmission path corresponding to the established first Internet Protocol type address is a fault and determines that the state of the transmission path corresponding to the second Internet Protocol type address is normal, the second Internet protocol type address is used.
  • the transmission path sends a session management message to the second network element.
  • the transceiver is further configured to use a transmission path corresponding to the address of the first Internet protocol type address Transmitting, by the second network element, a first status confirmation message for determining a status of the transmission path corresponding to the first Internet Protocol type address, and receiving a response of the second network element successfully receiving the first status confirmation message Message
  • the processor is configured to: when the transceiver receives the response message that is successfully received by the second network element and successfully receives the first status confirmation message, determine the transmission corresponding to the first Internet protocol type address The status of the path is normal; the transceiver does not receive the response message sent by the second network element and successfully receives the first status confirmation message, and determines the transmission corresponding to the first internet protocol type address. The status of the path is faulty.
  • the transceiver is further configured to use the address corresponding to the second Internet protocol type address Transmitting, by the transmission path, a second status confirmation message for determining a status of the transmission path corresponding to the second internet protocol type address, to the second network element, and receiving the success of sending the second network element Receiving a response message of the second status confirmation message;
  • the processor is configured to: when the transceiver receives the response message that the second network element successfully receives the second status confirmation message, determine that the second internet protocol type address corresponds to the transmission The path status is normal; the transceiver does not receive the response message sent by the second network element and successfully receives the second status confirmation message, and determines that the second Internet protocol type address corresponds to The status of the transmission path is faulty.
  • the transceiver is further configured to employ the second When the transmission path corresponding to the Internet Protocol Type address sends a session management message to the second network element, if the processor determines that the state of the transmission path corresponding to the first Internet Protocol address is restored from a fault to a normal state, The transmission path corresponding to the second Internet Protocol type address is switched to send a session management message to the second network element by using a transmission path corresponding to the first Internet Protocol type address.
  • the first Internet protocol type address is IPv6
  • the second internet protocol type address is an IPv4 address.
  • the embodiment of the present invention provides a first network element, including:
  • a processing unit configured to determine that the first network element to which the user belongs and the second network element to be communicated are dual-stack network elements, where the dual-stack network element is a network element supporting two Internet protocol type addresses;
  • a sending unit configured to preferentially send a session management message to the second network element by using a transmission path corresponding to the first internet protocol type address of the two internet protocol type addresses.
  • the first network element when the first network element determines that the second network element to be communicated with each other and the second network element to be communicated is a dual-stack network element, the first network element preferentially adopts the first Internet protocol type of the addresses of the two Internet protocol types.
  • the transmission path corresponding to the address sends a session management message to the second network element, so as to implement an IP address used for signaling interaction between the dual-stack network elements.
  • FIG. 1 is a flowchart of a dual stack address management method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an EPS system according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a dual stack address management device according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a first network element according to an embodiment of the present invention.
  • the embodiment of the present invention provides a dual stack address management method and a first network element, which is used to indicate which IP address is used for signaling interaction between network elements.
  • the method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated.
  • EPS Evolved Packet System
  • MME mobility management entity
  • PGW Packet Data Network Gateway
  • GPRS General Packet Radio Service
  • the embodiment of the invention provides a dual stack address management method. As shown in FIG. 1 , the method includes:
  • Step 101 The first network element determines itself and the second network element to be communicated as a dual-stack network element.
  • the dual-stack network element is a network element supporting two Internet protocol type addresses.
  • the two Internet protocol type addresses may be an IPv4 address and an IPv6 address.
  • the first network element determines that it is a dual-stack network element
  • the first network element determines that it is a dual-stack network element according to the address configuration information of the local interface; the address configuration information includes the The first internet protocol type address and the second internet protocol type address of the first network element.
  • the first internet protocol type address may be an IPv6 address
  • the second internet protocol type address may be an IPv4 address.
  • the method may be as follows:
  • GTP general packet radio service tunneling protocol
  • the first network element receives a create session request message sent by the third network element, where the create session request message carries the first internet protocol type address and the second internet protocol type of the second network element. address.
  • Step 102 The first network element preferentially sends a session management message to the second network element by using a transmission path corresponding to the first Internet protocol type address of the two Internet protocol type addresses.
  • the first network protocol type address of the first network element and the first Internet protocol type of the second network element may be used.
  • the address establishes a transmission path between the first network element and the second network element, and the first network element and the first network element according to the second internet protocol type address of the first network element and the second internet protocol type address of the second network element A transmission path is established between the two network elements.
  • the session management message is sent to the second network element by using the transmission path corresponding to the first Internet protocol type address.
  • the first network element adopts a first Internet protocol type. After the transmission path corresponding to the address sends the session management message to the second network element, determining that the session management response message sent by the second network element to indicate that the session management message is successfully received is not received, The first network element sends a session management message to the second network element by using a transmission path corresponding to the second internet protocol type address.
  • the first network element when the first network element needs to send a session management message to the second network element, first determine a status of the transmission path corresponding to the established first Internet Protocol type address, if the status is Normally, the first network element sends a session management message to the second network element by using a transmission path corresponding to the first Internet Protocol type address.
  • the first network element determines that the status of the transmission path corresponding to the established first Internet Protocol type address is a fault, and determines that the status of the transmission path corresponding to the second Internet Protocol type address is normal, the first network The element sends a session management message to the second network element by using a transmission path corresponding to the second internet protocol type address.
  • the first network element determines the state of the transmission path corresponding to the established first Internet Protocol type address, and may be implemented in the following manner:
  • the first network element does not receive the response message that the second network element successfully receives the first status confirmation message, and determines that the status of the transmission path corresponding to the first Internet Protocol type address is a fault.
  • the first status confirmation message may be an echo (ECHO) message with a probe path status.
  • ECHO echo
  • the first network element determines the state of the transmission path corresponding to the established second Internet Protocol type address, and may be implemented in the following manner:
  • the network element does not receive the response message that the second network element successfully receives the second status confirmation message, and determines that the status of the transmission path corresponding to the second Internet protocol type address is a fault.
  • the second status confirmation message may be an echo message with a probe path status.
  • the first network element may periodically send an echo message to the second network element by using a transmission path corresponding to the first Internet Protocol type address and a transmission path corresponding to the second Internet protocol address. And save the detected status results.
  • the first network element when the first network element sends a session management message to the second network element by using a transmission path corresponding to the second Internet protocol type address, if the transmission path corresponding to the first Internet Protocol address is determined, When the state is restored from the fault to the normal state, the first network element is switched from the transmission path corresponding to the second Internet Protocol type address to the second network element by using the transmission path corresponding to the first Internet Protocol type address. Send a session management message.
  • the EPS system includes user equipment (English: User Equipment, UE for short), Evolved UMTS Territorial Radio Access Network (E-UTRAN), and Evolved Packet Core (English: Evolved Packet Core, referred to as EPC).
  • the EPC includes: MME, SGW, and PGW.
  • the MME is responsible for the mobility management of the control plane, including user context and mobility state management, assigning user temporary identity, etc., and is connected to the SGSN in the existing network through the S3 interface, and is connected to the E-UTRAN through the S1-MME interface, and The SGW is connected through an S1-U interface, and a timer is set in the MME; the SGW is responsible for initiating paging for downlink data in an idle state, managing and storing IP bearer parameters and routing information within the network; and the PGW acts as a user plane between different access systems. Anchor point.
  • the EPS system shown in Figure 2 also includes a policy and charging rule function entity (English: Policy and Charging Rule Function, PCRF), a home network server (English: Home Subscriber Server, HSS for short), and a GPRS service support node. (English: serving GPRS support node, referred to as: SGSN) and operator's IP services (Operator's IP Services).
  • PCRF Policy and Charging Rule Function
  • HSS Home Subscriber Server
  • GPRS service support node referred to as: SGSN
  • operator's IP services Operator's IP Services
  • the SGW receives the Create Session Request message sent by the MME, where the Create Session Request message carries the IP address of the PGW and the IP address of the MME. If both the MME and the PGW support the dual stack address, the Create Session Request message includes the IPv4 address and the IPv6 address of the PGW, and the IPv4 address and the IPv6 address of the MME. Then the SGW determines that the PGW supports two types of IP addresses, that is, determines that the PGW is a dual-stack network element.
  • the SGW determines whether it is a dual-stack network element according to the IP address type of the local interface. If it is determined that the IP address of the local interface includes an IPv4 address and an IPv6 address, it is determined to be a dual-stack network element.
  • the SGW determines that both the self and the PGW are dual-stack network elements, and establishes a transmission path according to its own IPv4 address and the IPv4 address of the PGW (hereinafter referred to as an IPv4 path for convenience of description), and establishes according to its own IPv6 address and the IPv6 address of the PGW.
  • IPv4 path for convenience of description
  • IPv6 path Another transmission path
  • the SGW can preferentially select an IP address to communicate with the PGW according to its configuration. For example, pre-configuration preferentially selects an IPv6 address.
  • the SGW When the SGW sends a message to the PGW, it can preferentially use the IPv6 path to send. For example, the SGW sends a Modify Bearer Request message to the PGW. If the feedback message sent by the PGW for the Modify Bearer Request message is not received within the preset time period, the SGW can confirm that the status of the IPv6 path is faulty, and the Modify command can be sent again by using the IPv4 path. Bearer Request message. If the feedback message sent by the PGW for the Modify Bearer Request message is received within the preset duration, the status of the IPv6 path is normal, and each message that needs to be sent to the PGW can be sent through the IPv6 path.
  • the PGW After receiving the Modify Bearer Request message sent by the SGW, the PGW determines that the SGW has not changed according to the IP address of the SGW saved by itself, and directly processes the Modify Bearer Request message. Then, a response message for successfully receiving the Modify Bearer Request message is sent to the SGW.
  • the SGW sends a Modify Bearer Request message to the PGW by using an IPv4 path, Whether the status of the IPv6 path is restored to normal every predetermined time.
  • the subsequent SGW sends an message to the PGW using the IPv4 path.
  • the SGW may periodically confirm the status of the two transmission paths, and then save the state.
  • the status of the two transmission paths can be periodically detected by using an echo message.
  • Other messages can also be used to determine the status of the transmission path. For example, after the SGW sends a session management message to the PGW, if the session management response message of the session management message is successfully received after receiving the PGW feedback at the preset duration, it is determined that the transmission path is normal, and if the PGW is not received in the preset duration, When the feedback successfully receives the session management response message of the session management message, it determines that the transmission path is faulty.
  • the session management message may be a Create Session Request message or a Modify Bearer Request message. If it is determined that a certain transmission path is faulty, the session management message may be sent periodically through the failed transmission path to determine whether the transmission path returns to normal.
  • a session management message is sent over the IPv4 path.
  • a timer is set based on the preferred IP path. After the timer expires, an attempt is made to send a session management message to the preferred path. In response, the preferred IP path is considered to be normal and switched to the preferred IP path. If no response is received, the subsequent session management message still uses the non-preferred path until the next time the timer expires, again attempting to send the session management message over the preferred IP path.
  • the PGW then needs to send a message to the SGW to determine which transmission path to use to send the message based on the status of the two detected transmission paths. Specifically, first, it is determined whether the status of the detected IPv6 path is normal. If it is normal, the IPv6 path is preferentially used to send a message to the PGW. If it is determined that the state of the detected IPv6 path is faulty and the detected IPv4 path is normal, the IPv4 path is used to send a message to the PGW.
  • the IPv4 path When the IPv4 path is used to send a message to the PGW, the status of the IPv6 path is monitored. When the status of the IPv6 path is restored from the fault to normal, the switch is to use the IPv6 path to send a message to the PGW.
  • An embodiment of the present invention provides a first network element, as shown in FIG. 3, including:
  • the processing unit 301 is configured to determine the first network element to which the user belongs and the second network element to be communicated. All are dual-stack network elements, and the dual-stack network element is a network element supporting two Internet protocol type addresses;
  • the sending unit 302 is configured to preferentially send a session management message to the second network element by using a transmission path corresponding to the first internet protocol type address of the two internet protocol type addresses.
  • the processing unit 301 is specifically configured to determine, according to the address configuration information of the local interface, the dual-layer network element, where the address configuration information includes the first Internet protocol type address and the first network element. Two internet protocol type addresses.
  • the first network element further includes a receiving unit 303.
  • the receiving unit 303 is configured to receive a general packet radio service tunneling protocol (GTP) message sent by the second network element, where the GTP message carries a first internet protocol type address and a second internet protocol type address of the second network element; or
  • the receiving unit 303 is configured to receive a create session request message sent by the third network element, where the create session request message carries a first internet protocol type address and a second internet protocol type address of the second network element.
  • GTP general packet radio service tunneling protocol
  • processing unit 301 is further configured to: determine that the receiving unit 303 does not receive a session management response message that is sent by the second network element to indicate that the session management message is successfully received; the sending unit 302. The method further includes sending, by using a transmission path corresponding to the second Internet protocol type address, a session management message to the second network element.
  • the processing unit 301 is further configured to: before the sending unit 302 sends a session management message to the second network element by using a transmission path corresponding to the first Internet Protocol type address, determine the established first Internet protocol. The status of the transmission path corresponding to the type address is normal.
  • the sending unit 302 is further configured to: determine, by the processing unit 301, that a status of the transmission path corresponding to the established first Internet Protocol type address is a fault and determine a transmission path corresponding to the second Internet Protocol type address.
  • the session management message is sent to the second network element by using a transmission path corresponding to the second Internet Protocol type address.
  • the sending unit 302 is further configured to send, by using a transmission path corresponding to the first Internet Protocol type address, a first state for determining a state of a transmission path corresponding to the first Internet Protocol type address to the second network element.
  • a receiving message 303 the receiving unit 303 is further configured to receive a response message that is sent by the second network element and successfully received the first status confirmation message, where the processing unit 301 has When the receiving unit 303 receives the response message sent by the second network element and successfully receives the first status confirmation message, determining that the status of the transmission path corresponding to the first Internet Protocol type address is Normally, the receiving unit 303 does not receive the response message that the second network element successfully receives the first status confirmation message, and determines the status of the transmission path corresponding to the first internet protocol type address. For failure.
  • the sending unit 302 is further configured to send, by using a transmission path corresponding to the second Internet protocol type address, to the second network element, to determine a status of a transmission path corresponding to the second Internet protocol type address. a second status confirmation message; the receiving unit 303 is further configured to receive a response message that is sent by the second network element to successfully receive the second status confirmation message, where the processing unit 301 is specifically configured to The receiving unit 303, when receiving the response message that the second network element successfully receives the second status confirmation message, determines that the status of the transmission path corresponding to the second Internet Protocol type address is normal; The 303 does not receive the response message that the second network element successfully receives the second status confirmation message, and determines that the status of the transmission path corresponding to the second Internet protocol type address is a fault.
  • the sending unit 302 is further configured to: when the session management message is sent to the second network element by using a transmission path corresponding to the second Internet protocol type address, if the processing unit 301 determines the When the state of the transmission path corresponding to the Internet Protocol address is restored from the failure to the normal state, the transmission path corresponding to the address of the second Internet Protocol type is switched to the transmission path corresponding to the address of the first Internet Protocol type address.
  • the second network element sends a session management message.
  • the embodiment of the present invention further provides a first network element.
  • the device includes a transceiver 401, a processor 402, and a memory 403.
  • the transceiver 401, the processor 402, and the memory 403 are connected to each other.
  • the specific connecting medium between the above components is not limited in the embodiment of the present invention.
  • the memory 403, the processor 402 and the transceiver are connected by a bus 404 in FIG. 6.
  • the bus is indicated by a thick line in FIG. 4, and the connection manner between other components is only for illustrative description. Not limited to limits.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 4, but it does not mean that there is only one bus or one type of bus.
  • the memory 403 is used to store the program code executed by the processor 402, and may be a volatile memory, such as a random access memory (English: random-access memory, abbreviation: RAM);
  • the memory 403 may also be a non-volatile memory (English: non-volatile memory), such as read-only memory (English: read-only memory, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard Disk drive, abbreviated as: HDD) or solid state drive (English: solid-state drive, SSD), or memory 403 is a program code that can be used to carry or store desired instructions or data structures and can be accessed by a computer. Any other medium, but not limited to this.
  • the memory 403 may be a combination of the above memories.
  • the processor 402 in the embodiment of the present invention may be a central processing unit (English: central processing unit, CPU for short).
  • the processor 402 determines that the first network element to which the user belongs and the second network element to be communicated are both dual-stack network elements, and the dual-stack network element is a network element supporting two Internet protocol type addresses;
  • the transceiver 401 preferentially sends a session management message to the second network element by using a transmission path corresponding to the first internet protocol type address of the two internet protocol type addresses.
  • the processor 402 is specifically configured to determine, according to the address configuration information of the local interface, a dual-layer network element, where the address configuration information includes the first Internet protocol type address and the first network element. Two internet protocol type addresses.
  • the first network element further includes a transceiver 401.
  • the transceiver 401 is configured to receive a GTP message sent by the second network element, where the GTP message carries a first Internet Protocol type address and a second Internet Protocol type address of the second network element, or a transceiver 401, configured to: Receiving a create session request message sent by the third network element, where the create session request message carries the first internet protocol type address and the second internet protocol type address of the second network element.
  • the processor 402 is further configured to: determine that the transceiver 401 does not receive a session management response message that is sent by the second network element to indicate that the session management message is successfully received; the transceiver 401.
  • the 401 is further configured to send a session management message to the second network element by using a transmission path corresponding to the second Internet protocol type address.
  • the processor 402 is further configured to: before the transceiver 401 sends a session management message to the second network element by using a transmission path corresponding to the first Internet Protocol type address, determine the established first Internet protocol. The status of the transmission path corresponding to the type address is normal.
  • the transceiver 401 is further configured to: determine, by the processor 402, that a status of the transmission path corresponding to the established first Internet Protocol type address is a fault and determine a transmission path corresponding to the second Internet Protocol type address. When the status is normal, the session management message is sent to the second network element by using a transmission path corresponding to the second Internet Protocol type address.
  • the transceiver 401 is further configured to send, by using a transmission path corresponding to the first Internet Protocol type address, a first state for determining a status of a transmission path corresponding to the first Internet Protocol type address to the second network element. a confirmation message, the transceiver 401 is further configured to receive a response message that is sent by the second network element to successfully receive the first status confirmation message, where the processor 402 is specifically configured to be in the transceiver 401.
  • the transceiver 401 is further configured to send, by using a transmission path corresponding to the second Internet protocol type address, to the second network element, to determine a status of a transmission path corresponding to the second Internet protocol type address. a second status confirmation message; the transceiver 401 is further configured to receive a response message that is sent by the second network element to successfully receive the second status confirmation message, where the processor 402 is specifically configured to The transceiver 401, when receiving the response message that the second network element successfully receives the second status confirmation message, determines that the status of the transmission path corresponding to the second internet protocol type address is normal; The 401 does not receive the response message that the second network element successfully receives the second status confirmation message, and determines that the status of the transmission path corresponding to the second Internet protocol type address is a fault.
  • the transceiver 401 is further configured to: when the session management message is sent to the second network element by using a transmission path corresponding to the second Internet protocol type address, if the processor 402 determines When the state of the transmission path corresponding to the first Internet Protocol address is restored from the fault to the normal state, the transmission path corresponding to the second Internet Protocol type address is switched to the transmission path corresponding to the first Internet protocol type address.
  • the second network element sends a session management message.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本发明提供了一种双栈地址管理方法、设备及第一网元，用于实现指定双栈网元之间进行信令交互所使用的IP地址。该方法，包括：第一网元确定自身以及需进行通信的第二网元均为双栈网元，所述双栈网元为支持两种互联网协议类型地址的网元；所述第一网元优先采用两种互联网协议类型地址中的第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。

Description

一种双栈地址管理方法及第一网元 技术领域
本发明涉及通信技术领域，尤其涉及一种双栈地址管理方法及第一网元。
背景技术
国际互联网编号分配机构IANA宣布全球互联网协议第4版(英文：Internet Protocol version 4，简称：IPv4)地址在2011年初已分配完毕，全球互联网从IPv4逐步向互联网协议第6版(英文：Internet Protocol version 6，简称：IPv6)过渡。
因此运营商开始针对核心网中各个网元进行部署，使核心网各个网元的逻辑接口在支持IPv4的基础上能够支持IPv6的需求。从而使得核心网出现了支持两种互联网协议类型的地址(IPv4地址和IPv6地址)的网元，简称双栈网元。
由于两个双栈网元进行信令交互时，信令中携带了双栈网元的IPv4地址以及IPv6地址，但是现有技术中并没有指出网元间使用哪个IP地址进行信令交互。
发明内容
本发明实施例提供了一种双栈地址管理方法及第一网元，用于实现指定双栈网元之间进行信令交互所使用的IP地址。
第一方面，本发明实施例提供了一种双栈地址管理方法，包括：
第一网元确定自身以及需进行通信的第二网元均为双栈网元，所述双栈网元为支持两种互联网协议类型地址的网元；
所述第一网元优先采用两种互联网协议类型地址中的第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
结合第一方面，在第一方面的第一种可能的实现方式中，所述第一网元 确定自身为双栈网元，包括：
所述第一网元根据本地接口的地址配置信息确定自身为双栈网元；所述地址配置信息中包括所述第一网元的第一互联网协议类型地址和第二互联网协议类型地址。
结合第一方面，在第一方面的第二种可能的实现方式中，所述第一网元确定所述第二网元为双栈网元，包括：
所述第一网元接收到所述第二网元发送的通用分组无线业务隧道协议GTP消息，所述GTP消息携带所述第二网元的第一互联网协议类型地址和第二互联网协议类型地址；或者，
所述第一网元接收到第三网元发送的创建会话请求create session request消息，所述create session request消息携带所述第二网元的第一互联网协议类型地址和第二互联网协议类型地址。
结合第一方面的第二种可能的实现方式，在第一方面的第三种可能的实现方式中，所述第一网元采用第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息之后，还包括：
在确定未接收到所述第二网元发送的用于指示成功接收到所述会话管理消息的会话管理响应消息，所述第一网元采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
结合第一方面的第二种可能的实现方式，在第一方面的第四种可能的实现方式中，所述第一网元采用第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息之前，还包括：
所述第一网元确定建立的第一互联网协议类型地址对应的传输路径的状态为正常。
结合第一方面的第四种可能的实现方式，在第一方面的第五种可能的实现方式中，还包括：
所述第一网元确定建立的第一互联网协议类型地址对应的传输路径的状态为故障且确定所述第二互联网协议类型地址对应的传输路径的状态为正常 时，所述第一网元采用第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
结合第一方面的第五种可能的实现方式，在第一方面的第六种可能的实现方式中，所述第一网元确定建立的第一互联网协议类型地址对应的传输路径的状态，包括：
所述第一网元采用所述第一互联网协议类型地址对应的传输路径向所述第二网元发送用于确定所述第一互联网协议类型地址对应的传输路径状态的第一状态确认消息；
所述第一网元接收到所述第二网元发送的成功接收到所述第一状态确认消息的响应消息，确定所述第一互联网协议类型地址对应的传输路径的状态为正常；所述第一网元在预定时长内未接收到所述第二网元发送的成功接收到所述第一状态确认消息的响应消息，确定第一互联网协议类型地址对应的传输路径的状态为故障。
结合第一方面的第五种或者第六种可能的实现方式，在第一方面的第七种可能的实现方式中，所述第一网元确定建立的第二互联网协议类型地址对应的传输路径的状态，包括：
所述第一网元采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送用于确定所述第二互联网协议类型地址对应的传输路径状态的第二状态确认消息；
所述第一网元接收到所述第二网元发送的成功接收到所述第二状态确认消息的响应消息，确定所述第二互联网协议类型地址对应的传输路径状态为正常；所述第一网元在预定时长内未接收到所述第二网元发送的成功接收到所述第二状态确认消息的响应消息，确定所述第二互联网协议类型地址对应的传输路径的状态为故障。
结合第一方面的第三种至第七种可能的实现方式中的任意一种，在第一方面的第八种可能的实现方式中，还包括：
所述第一网元采用所述第二互联网协议类型地址对应的传输路径向所述 第二网元发送会话管理消息时，若确定所述第一互联网协议地址对应的传输路径的状态由故障恢复为正常时，所述第一网元由采用所述第二互联网协议类型地址对应的传输路径切换为采用所述第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
结合第一方面和第一方面的第一种至第八种可能的实现方式中的任意一种，在第一方面的第九种可能的实现方式中，所述第一互联网协议类型地址为IPv6地址，所述第二互联网协议类型地址为IPv4地址。
第二方面，本发明实施例提供了一种第一网元，包括：
处理器，用于确定自身所属的第一网元以及需进行通信的第二网元均为双栈网元，所述双栈网元为支持两种互联网协议类型地址的网元；
收发器，用于优先采用两种互联网协议类型地址中的第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
结合第二方面，在第二方面的第一种可能的实现方式中，所述处理器，具体用于根据本地接口的地址配置信息确定自身所属的第一网元为双栈网元；所述地址配置信息中包括所述第一网元的第一互联网协议类型地址和第二互联网协议类型地址。
结合第二方面，在第二方面的第二种可能的实现方式中，所述收发器，还用于接收所述第二网元发送的通用分组无线业务隧道协议GTP消息，所述GTP消息携带所述第二网元的第一互联网协议类型地址和第二互联网协议类型地址；或者，
用于接收第三网元发送的创建会话请求create session request消息，所述create session request消息携带所述第二网元的第一互联网协议类型地址和第二互联网协议类型地址。
结合第二方面的第二种可能的实现方式，在第二方面的第三种可能的实现方式中，所述处理器还用于：
确定所述收发器未接收到所述第二网元发送的用于指示成功接收到所述会话管理消息的会话管理响应消息；
所述收发器，还用于采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
结合第二方面的第二种可能的实现方式，在第二方面的第四种可能的实现方式中，所述处理器还用于：
在所述收发器采用第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息之前，确定建立的第一互联网协议类型地址对应的传输路径的状态为正常。
结合第二方面的第四种可能的实现方式，在第二方面的第五种可能的实现方式中，所述收发器还用于：
在所述处理器确定建立的第一互联网协议类型地址对应的传输路径的状态为故障且确定所述第二互联网协议类型地址对应的传输路径的状态为正常时，采用第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
结合第二方面的第五种可能的实现方式，在第二方面的第六种可能的实现方式中，所述收发器，还用于采用所述第一互联网协议类型地址对应的传输路径向所述第二网元发送用于确定所述第一互联网协议类型地址对应的传输路径状态的第一状态确认消息；接收所述第二网元发送的成功接收到所述第一状态确认消息的响应消息；
所述处理器，具体用于在所述收发器接收到所述第二网元发送的成功接收到所述第一状态确认消息的响应消息时，确定所述第一互联网协议类型地址对应的传输路径的状态为正常；在所述收发器在预定时长内未接收到所述第二网元发送的成功接收到所述第一状态确认消息的响应消息，确定第一互联网协议类型地址对应的传输路径的状态为故障。
结合第二方面的第五种或者第六种可能的实现方式，在第二方面的第七种可能的实现方式中，所述收发器，还用于采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送用于确定所述第二互联网协议类型地址对应的传输路径状态的第二状态确认消息；接收所述第二网元发送的成功 接收到所述第二状态确认消息的响应消息；
所述处理器，具体用于在所述收发器接收到所述第二网元发送的成功接收到所述第二状态确认消息的响应消息时，确定所述第二互联网协议类型地址对应的传输路径状态为正常；在所述收发器在预定时长内未接收到所述第二网元发送的成功接收到所述第二状态确认消息的响应消息，确定所述第二互联网协议类型地址对应的传输路径的状态为故障。
结合第二方面的第三种至第七种可能的实现方式中的任意一种，在第二方面的第八种可能的实现方式中，所述收发器，还用于在采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息时，若所述处理器确定所述第一互联网协议地址对应的传输路径的状态由故障恢复为正常时，由采用所述第二互联网协议类型地址对应的传输路径切换为采用所述第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
结合第二方面和第二方面的第一种至第八种可能的实现方式中的任意一种，在第二方面的第九种可能的实现方式中，所述第一互联网协议类型地址为IPv6地址，所述第二互联网协议类型地址为IPv4地址。
第三方面，本发明实施例提供了一种第一网元，其特征在于，包括：
处理单元，用于确定自身所属的第一网元以及需进行通信的第二网元均为双栈网元，所述双栈网元为支持两种互联网协议类型地址的网元；
发送单元，用于优先采用两种互联网协议类型地址中的第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
本发明实施例中第一网元确定自身以及需进行通信的第二网元均为双栈网元时，所述第一网元优先采用两种互联网协议类型的地址中的第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息，从而实现指定双栈网元之间进行信令交互所使用的IP地址。
附图说明
图1为本发明实施例提供的一种双栈地址管理方法流程图；
图2为本发明实施例提供的EPS***示意图；
图3为本发明实施例提供的一种双栈地址管理设备示意图；
图4为本发明实施例提供的一种第一网元结构示意图。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步地详细描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
本发明实施例提供一双栈地址管理方法以及第一网元，用以指示网元间使用哪个IP地址进行信令交互。其中，方法和装置是基于同一发明构思的，由于方法及装置解决问题的原理相似，因此装置与方法的实施可以相互参见，重复之处不再赘述。
本发明实施例中提供的技术方案，可以应用于演进分组***(英文：Evolved Packet System，简称：EPS)***，例如：EPS***中的移动性管理实体(英文：mobility management entity，简称：MME)、服务网关(英文：Serving Gateway，简称：SGW)或者分组数据网络网关(英文：Packet Data Network Gateway，简称：PGW)。还可以应用于通用分组无线业务(英文：General Packet Radio Service，简称：GPRS)***，例如：GPRS***中的GPRS业务支撑节点(英文：serving GPRS support node，简称：SGSN)或者网关GPRS支撑节点(Gateway-GPRS Support Node，简称：GGSN)。
本发明实施例提供了一种双栈地址管理方法，如图1所示，该方法包括：
步骤101，第一网元确定自身以及需进行通信的第二网元均为双栈网元， 所述双栈网元为支持两种互联网协议类型地址的网元。
其中，两种互联网协议类型地址可以为IPv4地址和IPv6地址。
可选地，所述第一网元在确定自身为双栈网元时，所述第一网元根据本地接口的地址配置信息确定自身为双栈网元；所述地址配置信息中包括所述第一网元的第一互联网协议类型地址和第二互联网协议类型地址。
具体地，第一互联网协议类型地址可以是IPv6地址，第二互联网协议类型地址可以是IPv4地址。
可选地，所述第一网元确定所述第二网元为双栈网元时，可以通过如下方式：
第一种实现方式：
所述第一网元接收到所述第二网元发送的通用分组无线业务隧道协议(英文：GPRS Tunnel Protocol，简称：GTP)消息，所述GTP消息携带所述第二网元的第一互联网协议类型地址和第二互联网协议类型地址。
第二种实现方式：
所述第一网元接收到第三网元发送的创建会话请求(create session request)消息，所述create session request消息携带所述第二网元的第一互联网协议类型地址和第二互联网协议类型地址。
步骤102，所述第一网元优先采用两种互联网协议类型地址中的第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
具体的，第一网元确定自身以及需进行通信的第二网元均为双栈网元时，可以根据第一网元的第一互联网协议类型地址和第二网元的第一互联网协议类型地址在第一网元和第二网元之间建立一条传输路径，以及根据第一网元的第二互联网协议类型地址和第二网元的第二互联网协议类型地址在第一网元和第二网元之间建立一条传输路径。然后在需要向第二网元发送会话管理消息时，优先采用第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
在其中一个可选地的实施例中，所述第一网元采用第一互联网协议类型 地址对应的传输路径向所述第二网元发送会话管理消息之后，在确定未接收到所述第二网元发送的用于指示成功接收到所述会话管理消息的会话管理响应消息，所述第一网元采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
在其中另一个可选地的实施例中，所述第一网元需要向第二网元发送会话管理消息时，先确定建立的第一互联网协议类型地址对应的传输路径的状态，若状态为正常，所述第一网元采用第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
进一步的，所述第一网元确定建立的第一互联网协议类型地址对应的传输路径的状态为故障并且确定所述第二互联网协议类型地址对应的传输路径的状态为正常，所述第一网元采用第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
进一步的，所述第一网元确定建立的第一互联网协议类型地址对应的传输路径的状态，可以通过以下方式实现：
所述第一网元采用所述第一互联网协议类型地址对应的传输路径向所述第二网元发送用于确定所述第一互联网协议类型地址对应的传输路径状态的第一状态确认消息；
所述第一网元接收到所述第二网元发送的成功接收到所述第一状态确认消息的响应消息，确定所述第一互联网协议类型地址对应的传输路径的状态为正常；所述第一网元在预定时长内未接收到所述第二网元发送的成功接收到所述第一状态确认消息的响应消息，确定第一互联网协议类型地址对应的传输路径的状态为故障。
第一状态确认消息可以是具有探测路径状态的回声(ECHO)消息。
进一步地，所述第一网元确定建立的第二互联网协议类型地址对应的传输路径的状态，可以通过以下方式实现：
所述第一网元采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送用于确定所述第二互联网协议类型地址对应的传输路径状态的 第二状态确认消息；
所述第一网元接收到所述第二网元发送的成功接收到所述第二状态确认消息的响应消息，确定所述第二互联网协议类型地址对应的传输路径状态为正常；所述第一网元在预定时长内未接收到所述第二网元发送的成功接收到所述第二状态确认消息的响应消息，确定所述第二互联网协议类型地址对应的传输路径的状态为故障。
第二状态确认消息可以是具有探测路径状态的回声(echo)消息。
可选地，第一网元可以周期性的采用所述第一互联网协议类型地址对应的传输路径以及第二互联网协议地址对应的传输路径向所述第二网元发送echo消息。并将探测到的状态结果保存。
可选地，所述第一网元采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息时，若确定所述第一互联网协议地址对应的传输路径的状态由故障恢复为正常时，所述第一网元由采用所述第二互联网协议类型地址对应的传输路径切换为采用所述第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
下面结合具体应用场景对本发明实施例作具体说明。
如图2所示，EPS***中包括用户设备(英文：User Equipment，简称：UE)、演进陆地无线接入网(英文：Evolved UMTS Territorial Radio Access Network，E-UTRAN)和演进分组核心(英文：Evolved Packet Core，简称：EPC)网。EPC中包括：MME、SGW和PGW。其中，MME负责控制面的移动性管理，包括用户上下文和移动状态管理、分配用户临时身份标识等，与现有网络中的SGSN通过S3接口连接，与E-UTRAN通过S1-MME接口连接，与SGW通过S1-U接口连接，MME中设置有定时器；SGW负责空闲状态下为下行数据发起寻呼，管理保存IP承载参数和网络内路由信息等；PGW则充当不同接入***间的用户面锚点。图2所示EPS***中还包括了策略和计费规则功能实体(英文：Policy and Charging Rule Function，简称：PCRF)、归属网络服务器(英文：Home Subscriber Server，简称：HSS)、GPRS业务支撑节点 (英文：serving GPRS support node，简称：SGSN)以及运营商的IP服务(Operator’s IP Services)。
SGW接收到MME发送的Create Session Request消息，该Create Session Request消息中携带有PGW的IP地址和MME的IP地址。若MME和PGW均支持双栈地址，则Create Session Request消息中包括PGW的IPv4地址和IPv6地址，和MME的IPv4地址和IPv6地址。则SGW确定PGW支持两种IP地址类型，即确定PGW为双栈网元。
SGW根据本地接口的IP地址类型确定自身是否为双栈网元。若确定本地接口的IP地址包括IPv4地址和IPv6地址，则确定自身为双栈网元。
SGW确定自身和PGW均为双栈网元，则根据自身的IPv4地址和PGW的IPv4地址建立一条传输路径(后续为了方便描述简称为IPv4路径)，以及根据自身的IPv6地址和PGW的IPv6地址建立另一条传输路径(后续为了方便描述简称为IPv6路径)。
SGW可以根据自身的配置优先选择一种IP地址与PGW进行通信。例如预先配置优先选择IPv6地址。
SGW向PGW发送消息时，可以优先采用IPv6路径发送。例如SGW向PGW发送Modify Bearer Request消息，若在预设时长内未接收到PGW发送的针对该Modify Bearer Request消息的反馈消息，因此可以确认该IPv6路径的状态为故障，可以采用IPv4路径再次发送Modify Bearer Request消息。若在预设时长内接收到PGW发送的针对该Modify Bearer Request消息的反馈消息，则该IPv6路径的状态为正常，后续需要向PGW发送的每条消息均可以通过IPv6路径发送。
PGW在收到SGW发送的Modify Bearer Request消息后，根据自身保存的SGW的IP地址，确定SGW并未发生改变，则直接对该Modify Bearer Request消息进行处理。然后向SGW发送成功接收到该Modify Bearer Request消息的响应消息。
SGW在采用IPv4路径向PGW发送Modify Bearer Request消息时，可以 每隔预定时间探测IPv6路径的状态是否恢复正常。当探测到IPv6路径的状态恢复正常，则后续SGW采用IPv4路径向PGW发送消息。
可选地，在建立两条传输路径后，SGW可以对两条传输路径的状态周期性的确认，然后将状态保存。
具体可以通过echo消息来周期性的探测两条传输路径状态。还可以使用其他消息来确定传输路径的状态。比如：SGW向PGW发送会话管理消息后，若在预设时长接收到PGW反馈的成功接收到会话管理消息的会话管理响应消息时，则确定该传输路径正常，若在预设时长未接收到PGW反馈的成功接收到会话管理消息的会话管理响应消息时，则确定该传输路径故障。例如：会话管理消息可以是Create Session Request消息或者是Modify Bearer Request消息。若确定某一条传输路径故障，可以周期性相隔一段时间再通过该故障的传输路径发送会话管理消息来确定该传输路径是否恢复正常。
例如：当优选的IP路径(例如IPv6)故障时，在IPv4路径上发送会话管理消息。基于该优选的IP路径设置一个定时器，定时器超时之后会尝试往优选的路径上发送一次会话管理消息，有响应则认为此优选的IP路径恢复正常，切换到该优选的IP路径上来。如果没有收到响应，则后续的会话管理消息仍使用非优选的路径，直到下一次定时器超时时再次尝试通过优选的IP路径发送会话管理消息。
然后PGW在需要向SGW发送消息，根据探测到的两条传输路径的状态确定采用哪条传输路径发送消息。具体的，首先先确定探测到的IPv6路径的状态是否为正常，若正常，则优先采用IPv6路径向PGW发送消息。若确定探测到IPv6路径的状态为故障，探测到的IPv4路径为正常，则采用IPv4路径向PGW发送消息。
在采用IPv4路径向PGW发送消息时，监测IPv6路径的状态，当IPv6路径的状态由故障恢复为正常时，则切换为采用IPv6路径向PGW发送消息。
本发明实施例提供了一种第一网元，如图3所示，包括：
处理单元301，用于确定自身所属的第一网元以及需进行通信的第二网元 均为双栈网元，所述双栈网元为支持两种互联网协议类型地址的网元；
发送单元302，用于优先采用两种互联网协议类型地址中的第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
可选地，所述处理单元301，具体用于根据本地接口的地址配置信息确定自身为双栈网元；所述地址配置信息中包括所述第一网元的第一互联网协议类型地址和第二互联网协议类型地址。
可选地，该第一网元还包括接收单元303。接收单元303用于接收所述第二网元发送的通用分组无线业务隧道协议GTP消息，所述GTP消息携带所述第二网元的第一互联网协议类型地址和第二互联网协议类型地址；或者接收单元303，用于接收第三网元发送的create session request消息，所述create session request消息携带所述第二网元的第一互联网协议类型地址和第二互联网协议类型地址。
进一步的，所述处理单元301还用于：确定所述接收单元303未接收到所述第二网元发送的用于指示成功接收到所述会话管理消息的会话管理响应消息；所述发送单元302，还用于采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
可选地，所述处理单元301还用于：在所述发送单元302采用第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息之前，确定建立的第一互联网协议类型地址对应的传输路径的状态为正常。
进一步地，所述发送单元302还用于：在所述处理单元301确定建立的第一互联网协议类型地址对应的传输路径的状态为故障且确定所述第二互联网协议类型地址对应的传输路径的状态为正常时，采用第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
所述发送单元302，还用于采用所述第一互联网协议类型地址对应的传输路径向所述第二网元发送用于确定所述第一互联网协议类型地址对应的传输路径状态的第一状态确认消息；所述接收单元303，还用于接收所述第二网元发送的成功接收到所述第一状态确认消息的响应消息；所述处理单元301，具 体用于在所述接收单元303接收到所述第二网元发送的成功接收到所述第一状态确认消息的响应消息时，确定所述第一互联网协议类型地址对应的传输路径的状态为正常；在所述接收单元303在预定时长内未接收到所述第二网元发送的成功接收到所述第一状态确认消息的响应消息，确定第一互联网协议类型地址对应的传输路径的状态为故障。
进一步地，所述发送单元302，还用于采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送用于确定所述第二互联网协议类型地址对应的传输路径状态的第二状态确认消息；所述接收单元303，还用于接收所述第二网元发送的成功接收到所述第二状态确认消息的响应消息；所述处理单元301，具体用于在所述接收单元303接收到所述第二网元发送的成功接收到所述第二状态确认消息的响应消息时，确定所述第二互联网协议类型地址对应的传输路径状态为正常；在所述接收单元303在预定时长内未接收到所述第二网元发送的成功接收到所述第二状态确认消息的响应消息，确定所述第二互联网协议类型地址对应的传输路径的状态为故障。
可选地，所述发送单元302，还用于在采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息时，若所述处理单元301确定所述第一互联网协议地址对应的传输路径的状态由故障恢复为正常时，由采用所述第二互联网协议类型地址对应的传输路径切换为采用所述第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
本发明实施例还提供了一种第一网元，如图4所示，该设备包括收发器401、处理器402、存储器403。收发器401、处理器402以及存储器403相互连接。本发明实施例中不限定上述部件之间的具体连接介质。本发明实施例在图6中以存储器403、处理器402以及收发器之间通过总线404连接，总线在图4中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图4中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
本发明实施例中存储器403，用于存储处理器402执行的程序代码，可以是易失性存储器(英文：volatile memory)，例如随机存取存储器(英文：random-access memory，缩写：RAM)；存储器403也可以是非易失性存储器(英文：non-volatile memory)，例如只读存储器(英文：read-only memory，缩写：ROM)，快闪存储器(英文：flash memory)，硬盘(英文：hard disk drive，缩写：HDD)或固态硬盘(英文：solid-state drive，缩写：SSD)、或者存储器403是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器403可以是上述存储器的组合。
本发明实施例中处理器402，可以是一个中央处理单元(英文：central processing unit，简称CPU)。
处理器402确定自身所属的第一网元以及需进行通信的第二网元均为双栈网元，所述双栈网元为支持两种互联网协议类型地址的网元；
收发器401优先采用两种互联网协议类型地址中的第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
可选地，所述处理器402，具体用于根据本地接口的地址配置信息确定自身为双栈网元；所述地址配置信息中包括所述第一网元的第一互联网协议类型地址和第二互联网协议类型地址。
可选地，该第一网元还包括收发器401。收发器401用于接收所述第二网元发送的GTP消息，所述GTP消息携带所述第二网元的第一互联网协议类型地址和第二互联网协议类型地址；或者收发器401，用于接收第三网元发送的create session request消息，所述create session request消息携带所述第二网元的第一互联网协议类型地址和第二互联网协议类型地址。
进一步的，所述处理器402还用于：确定所述收发器401未接收到所述第二网元发送的用于指示成功接收到所述会话管理消息的会话管理响应消息；所述收发器401，还用于采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
可选地，所述处理器402还用于：在所述收发器401采用第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息之前，确定建立的第一互联网协议类型地址对应的传输路径的状态为正常。
进一步地，所述收发器401还用于：在所述处理器402确定建立的第一互联网协议类型地址对应的传输路径的状态为故障且确定所述第二互联网协议类型地址对应的传输路径的状态为正常时，采用第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
所述收发器401，还用于采用所述第一互联网协议类型地址对应的传输路径向所述第二网元发送用于确定所述第一互联网协议类型地址对应的传输路径状态的第一状态确认消息；所述收发器401，还用于接收所述第二网元发送的成功接收到所述第一状态确认消息的响应消息；所述处理器402，具体用于在所述收发器401接收到所述第二网元发送的成功接收到所述第一状态确认消息的响应消息时，确定所述第一互联网协议类型地址对应的传输路径的状态为正常；在所述收发器401在预定时长内未接收到所述第二网元发送的成功接收到所述第一状态确认消息的响应消息，确定第一互联网协议类型地址对应的传输路径的状态为故障。
进一步地，所述收发器401，还用于采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送用于确定所述第二互联网协议类型地址对应的传输路径状态的第二状态确认消息；所述收发器401，还用于接收所述第二网元发送的成功接收到所述第二状态确认消息的响应消息；所述处理器402，具体用于在所述收发器401接收到所述第二网元发送的成功接收到所述第二状态确认消息的响应消息时，确定所述第二互联网协议类型地址对应的传输路径状态为正常；在所述收发器401在预定时长内未接收到所述第二网元发送的成功接收到所述第二状态确认消息的响应消息，确定所述第二互联网协议类型地址对应的传输路径的状态为故障。
可选地，所述收发器401，还用于在采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息时，若所述处理器402确定 所述第一互联网协议地址对应的传输路径的状态由故障恢复为正常时，由采用所述第二互联网协议类型地址对应的传输路径切换为采用所述第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
本领域内的技术人员应明白，本发明的实施例可提供为方法、***、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例做出另外的变更和修改。所以，所附权 利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然，本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实施例的精神和范围。这样，倘若本发明实施例的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (21)

  1. 一种双栈地址管理方法，其特征在于，包括：
    第一网元确定自身以及需进行通信的第二网元均为双栈网元，所述双栈网元为支持两种互联网协议类型地址的网元；
    所述第一网元优先采用两种互联网协议类型地址中的第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
  2. 如权利要求1所述的方法，其特征在于，所述第一网元确定自身为双栈网元，包括：
    所述第一网元根据本地接口的地址配置信息确定自身为双栈网元；所述地址配置信息中包括所述第一网元的第一互联网协议类型地址和第二互联网协议类型地址。
  3. 如权利要求1所述的方法，其特征在于，所述第一网元确定所述第二网元为双栈网元，包括：
    所述第一网元接收到所述第二网元发送的通用分组无线业务隧道协议GTP消息，所述GTP消息携带所述第二网元的第一互联网协议类型地址和第二互联网协议类型地址；
    或者
    所述第一网元接收到第三网元发送的创建会话请求create session request消息，所述create session request消息携带所述第二网元的第一互联网协议类型地址和第二互联网协议类型地址。
  4. 如权利要求3所述的方法，其特征在于，所述第一网元采用第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息之后，还包括：
    在确定未接收到所述第二网元发送的用于指示成功接收到所述会话管理消息的会话管理响应消息，所述第一网元采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
  5. 如权利要求3所述的方法，其特征在于，所述第一网元采用第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息之前，还包括：
    所述第一网元确定建立的第一互联网协议类型地址对应的传输路径的状态为正常。
  6. 如权利要求5所述的方法，其特征在于，还包括：
    所述第一网元确定建立的第一互联网协议类型地址对应的传输路径的状态为故障且确定所述第二互联网协议类型地址对应的传输路径的状态为正常时，所述第一网元采用第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
  7. 如权利要求6所述的方法，其特征在于，所述第一网元确定建立的第一互联网协议类型地址对应的传输路径的状态，包括：
    所述第一网元采用所述第一互联网协议类型地址对应的传输路径向所述第二网元发送用于确定所述第一互联网协议类型地址对应的传输路径状态的第一状态确认消息；
    所述第一网元接收到所述第二网元发送的成功接收到所述第一状态确认消息的响应消息，确定所述第一互联网协议类型地址对应的传输路径的状态为正常；所述第一网元在预定时长内未接收到所述第二网元发送的成功接收到所述第一状态确认消息的响应消息，确定第一互联网协议类型地址对应的传输路径的状态为故障。
  8. 如权利要求6或7所述的方法，其特征在于，所述第一网元确定建立的第二互联网协议类型地址对应的传输路径的状态，包括：
    所述第一网元采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送用于确定所述第二互联网协议类型地址对应的传输路径状态的第二状态确认消息；
    所述第一网元接收到所述第二网元发送的成功接收到所述第二状态确认消息的响应消息，确定所述第二互联网协议类型地址对应的传输路径状态为 正常；所述第一网元在预定时长内未接收到所述第二网元发送的成功接收到所述第二状态确认消息的响应消息，确定所述第二互联网协议类型地址对应的传输路径的状态为故障。
  9. 如权利要求4～8任一所述的方法，其特征在于，还包括：
    所述第一网元采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息时，若确定所述第一互联网协议地址对应的传输路径的状态由故障恢复为正常时，所述第一网元由采用所述第二互联网协议类型地址对应的传输路径切换为采用所述第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
  10. 如权利要求1～9任一所述的方法，其特征在于，所述第一互联网协议类型地址为IPv6地址，所述第二互联网协议类型地址为IPv4地址。
  11. 一种第一网元，其特征在于，包括：
    处理器，用于确定自身所属的第一网元以及需进行通信的第二网元均为双栈网元，所述双栈网元为支持两种互联网协议类型地址的网元；
    收发器，用于优先采用两种互联网协议类型地址中的第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
  12. 如权利要求11所述的第一网元，其特征在于，所述处理器，具体用于根据本地接口的地址配置信息确定自身所属的第一网元为双栈网元；所述地址配置信息中包括所述第一网元的第一互联网协议类型地址和第二互联网协议类型地址。
  13. 如权利要求11所述的第一网元，其特征在于，所述收发器，还用于接收所述第二网元发送的通用分组无线业务隧道协议GTP消息，所述GTP消息携带所述第二网元的第一互联网协议类型地址和第二互联网协议类型地址；或者，
    用于接收第三网元发送的创建会话请求create session request消息，所述create session request消息携带所述第二网元的第一互联网协议类型地址和第二互联网协议类型地址。
  14. 如权利要求13所述的第一网元，其特征在于，所述处理器还用于：
    确定所述收发器未接收到所述第二网元发送的用于指示成功接收到所述会话管理消息的会话管理响应消息；
    所述收发器，还用于采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
  15. 如权利要求13所述的第一网元，其特征在于，所述处理器还用于：
    在所述收发器采用第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息之前，确定建立的第一互联网协议类型地址对应的传输路径的状态为正常。
  16. 如权利要求15所述的第一网元，其特征在于，所述收发器还用于：
    在所述处理器确定建立的第一互联网协议类型地址对应的传输路径的状态为故障且确定所述第二互联网协议类型地址对应的传输路径的状态为正常时，采用第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
  17. 如权利要求16所述的第一网元，其特征在于，所述收发器，还用于采用所述第一互联网协议类型地址对应的传输路径向所述第二网元发送用于确定所述第一互联网协议类型地址对应的传输路径状态的第一状态确认消息；接收所述第二网元发送的成功接收到所述第一状态确认消息的响应消息；
    所述处理器，具体用于在所述收发器接收到所述第二网元发送的成功接收到所述第一状态确认消息的响应消息时，确定所述第一互联网协议类型地址对应的传输路径的状态为正常；在所述收发器在预定时长内未接收到所述第二网元发送的成功接收到所述第一状态确认消息的响应消息，确定第一互联网协议类型地址对应的传输路径的状态为故障。
  18. 如权利要求16或17所述的第一网元，其特征在于，所述收发器，还用于采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送用于确定所述第二互联网协议类型地址对应的传输路径状态的第二状态确认消息；接收所述第二网元发送的成功接收到所述第二状态确认消息的响应 消息；
    所述处理器，具体用于在所述收发器接收到所述第二网元发送的成功接收到所述第二状态确认消息的响应消息时，确定所述第二互联网协议类型地址对应的传输路径状态为正常；在所述收发器在预定时长内未接收到所述第二网元发送的成功接收到所述第二状态确认消息的响应消息，确定所述第二互联网协议类型地址对应的传输路径的状态为故障。
  19. 如权利要求14～18任一所述的第一网元，其特征在于，所述收发器，还用于在采用所述第二互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息时，若所述处理器确定所述第一互联网协议地址对应的传输路径的状态由故障恢复为正常时，由采用所述第二互联网协议类型地址对应的传输路径切换为采用所述第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
  20. 如权利要求11～19任一所述的第一网元，其特征在于，所述第一互联网协议类型地址为IPv6地址，所述第二互联网协议类型地址为IPv4地址。
  21. 一种双栈地址管理设备，其特征在于，包括：
    处理单元，用于确定自身以及需进行通信的第二网元均为双栈网元，所述双栈网元为支持两种互联网协议类型地址的网元；
    发送单元，用于优先采用两种互联网协议类型地址中的第一互联网协议类型地址对应的传输路径向所述第二网元发送会话管理消息。
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