WO2015100570A1 - 确定gre隧道的方法、网关设备和接入站点 - Google Patents

确定gre隧道的方法、网关设备和接入站点 Download PDF

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Publication number
WO2015100570A1
WO2015100570A1 PCT/CN2013/090982 CN2013090982W WO2015100570A1 WO 2015100570 A1 WO2015100570 A1 WO 2015100570A1 CN 2013090982 W CN2013090982 W CN 2013090982W WO 2015100570 A1 WO2015100570 A1 WO 2015100570A1
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WO
WIPO (PCT)
Prior art keywords
address
gateway
gateway device
terminal
gre tunnel
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PCT/CN2013/090982
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English (en)
French (fr)
Inventor
易齐
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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 CN201380072953.2A priority Critical patent/CN104995892A/zh
Priority to PCT/CN2013/090982 priority patent/WO2015100570A1/zh
Publication of WO2015100570A1 publication Critical patent/WO2015100570A1/zh
Priority to US15/196,489 priority patent/US20160308824A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/50Address allocation
    • H04L61/5007Internet protocol [IP] addresses
    • H04L61/5014Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/12Avoiding congestion; Recovering from congestion
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16Gateway arrangements

Definitions

  • Embodiments of the present invention relate to the field of communications, and, more particularly, to a method, a gateway device, and an access site for determining a GRE tunnel. Background technique
  • an access point In the networking method of deploying a generic routing encapsulation (GRE) application in an existing wireless local area network (“WLAN”), an access point (Access Point) After the "AP” is started, it will be obtained from the access controller (Access Controller, called “AC") to the Wi-Fi gateway through the Dynamic Host Configuration Protocol ("MAC”) process.
  • the IP address of the gateway, and the IP address of the gateway does not change thereafter. Therefore, only the same GRE tunnel can be provided for different terminals accessing the same AP.
  • the GRE tunnel between the AP/AC and the Wi-Fi GW does not support dynamic negotiation. It can be configured only on the AC/AP or assigned to the AP by the AC.
  • the embodiment of the present invention provides a method for determining a GRE tunnel, a gateway device, and an access site, and the gateway device allocates a gateway IP address different from the IP address of the gateway device by the gateway device, which can effectively reduce the load of the gateway device. .
  • the first aspect provides a method for determining a GRE tunnel, where the method includes: receiving, by a first gateway device, a dynamic host configuration protocol DHCP request message sent by an access station, where the DHCP request message is used to request to access the The terminal of the access station allocates an internet protocol IP address; when it is determined that the load of the first gateway device exceeds a preset threshold, determining a gateway IP address different from the IP address of the first gateway device; sending a DHCP response to the access site The message, the DHCP response message includes the gateway IP address and a terminal IP address assigned to the terminal, so that the access station determines a universal route encapsulation GRE tunnel for the terminal according to the gateway IP address.
  • the determining a gateway IP address different from an IP address of the first gateway device includes:
  • the IP address of the second gateway device is determined as the gateway IP address.
  • the first gateway device includes a gateway control plane component and a gateway data plane component, where the IP address of the first gateway device is the gateway control plane component
  • the IP address, the gateway IP address different from the IP address of the first gateway device, is the IP address of the gateway data plane component.
  • a second aspect provides a method for determining a GRE tunnel, the method comprising: sending a dynamic host configuration protocol DHCP request message to a first gateway device, where the DHCP request message is used to request access to the access site.
  • the terminal allocates an IP address; receives a DHCP response message sent by the first gateway device, where the DHCP response message includes a gateway IP address and a terminal IP address assigned to the terminal, the gateway IP address and an IP address of the first gateway device Different; based on the gateway IP address in the DHCP response message, determine the general routing encapsulation GRE tunnel of the terminal.
  • the method before the receiving the DHCP response packet sent by the first gateway device, the method further includes: determining an IP address of the first gateway device The IP address of the first endpoint of the GRE tunnel of the terminal; determining the IP address of the access site as the second endpoint IP address of the GRE tunnel of the terminal; determining the generic route encapsulating the GRE tunnel of the terminal, including: according to the DHCP Responding to the packet, re-determining the first endpoint IP address of the GRE tunnel of the terminal, the first endpoint IP address of the re-determined GRE tunnel is the gateway IP address; according to the re-determined GRE tunnel first endpoint IP address And the second endpoint IP address of the GRE tunnel, determining the GRE tunnel of the terminal.
  • the method further includes: associating the terminal IP address of the terminal with the gateway IP address Therefore, when the terminal accesses the access station next time, the GRE tunnel of the terminal is determined according to the gateway IP address.
  • the gateway IP address is The IP address of the second gateway device.
  • the first gateway device includes a gateway control plane component and a gateway data plane component, where the IP address of the first gateway device is The IP address of the gateway control plane component.
  • the gateway IP address is the IP address of the gateway data plane component.
  • the third aspect provides a gateway device, where the gateway device includes: a receiving module, configured to receive a dynamic host configuration protocol DHCP request message sent by the access station, where the DHCP request message is used to request to access the The terminal of the access station allocates an internet protocol IP address; the determining module is configured to: when determining that the load of the gateway device exceeds a preset threshold, determine a gateway IP address different from an IP address of the gateway device; and send a module, The access station sends a DHCP response message, and the DHCP response message includes the gateway IP address and the terminal IP address assigned to the terminal, so that the access station determines a universal route encapsulation GRE tunnel for the terminal according to the gateway IP address.
  • a receiving module configured to receive a dynamic host configuration protocol DHCP request message sent by the access station, where the DHCP request message is used to request to access the The terminal of the access station allocates an internet protocol IP address
  • the determining module is configured to: when determining that the load of the gateway device exceeds
  • the determining module is configured to determine an IP address of the second gateway device as the gateway IP address.
  • the first gateway device includes a gateway control plane component and a gateway data plane component, where the IP address of the first gateway device is the gateway control plane component
  • the IP address, the gateway IP address different from the IP address of the first gateway device, is the IP address of the gateway data plane component.
  • an access site includes: a sending module, configured to send a dynamic host configuration protocol DHCP request message to the first gateway device, where the DHCP request message is used to request access
  • the terminal of the access station allocates an IP address
  • the receiving module is configured to receive a DHCP response message sent by the first gateway device, where the DHCP response message includes a gateway IP address and a terminal IP address allocated to the terminal, and the gateway IP address The address is different from the IP address of the first gateway device
  • the determining module is configured to determine, according to the gateway IP address in the DHCP response message, a GRE tunnel of the universal routing encapsulation of the terminal.
  • the determining module is further configured to: before the receiving module receives the DHCP response packet sent by the first gateway device, the first gateway device The IP address is determined as the first endpoint IP address of the GRE tunnel of the terminal; the determining module is further configured to determine the IP address of the access site as the second endpoint IP address of the GRE tunnel of the terminal; For: determining, according to the DHCP response message, the first endpoint IP address of the GRE tunnel of the terminal, where the first endpoint IP address of the re-determined GRE tunnel is the gateway IP address; the determining module is further used to And determining, according to the re-determined GRE tunnel first endpoint IP address and the GRE tunnel second endpoint IP address, the GRE tunnel of the terminal.
  • the access station further includes: an association module, The IP address is associated with the gateway IP address, so that the next time the terminal accesses the access site, the GRE tunnel of the terminal is determined according to the gateway IP address.
  • the determining module determines the The gateway IP address is the IP address of the second gateway device.
  • the first gateway device includes The gateway control plane component and the gateway data plane component, the IP address of the first gateway device is an IP address of the gateway control plane component, and the gateway IP address determined by the determining module is an IP address of the gateway data plane component.
  • the gateway device is configured to allocate a gateway IP address different from the IP address of the gateway device by the gateway device, so that the terminal can pass the other gateway device. Or the gateway component accesses the network, so that the load of the gateway device can be effectively reduced.
  • FIG. 1 is a schematic flowchart of a method for determining a GRE tunnel according to an embodiment of the present invention.
  • FIG. 2 is another schematic flowchart of a method for determining a GRE tunnel according to an embodiment of the present invention.
  • FIG. 3 is still another schematic flowchart of a method for determining a GRE tunnel according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a method for determining a GRE tunnel according to another embodiment of the present invention.
  • FIG. 5 shows a schematic block diagram of a gateway device according to an embodiment of the present invention.
  • Figure 6 shows a schematic block diagram of an access site in accordance with an embodiment of the present invention.
  • FIG. 7 is a schematic block diagram of a gateway device according to another embodiment of the present invention.
  • FIG. 8 is a schematic block diagram of an access site according to another embodiment of the present invention. detailed description
  • the access station may be a base station in a Wireless Local Area Networks ("WLAN"), and the access station may also be a micro base station (Micro) or a pico base station ( Pico) may also be a home base station, and may also be called a femto base station or an access point (AP), which is not limited by the present invention.
  • WLAN Wireless Local Area Networks
  • AP access point
  • a terminal may be referred to as a user equipment (User Equipment, referred to as "UE"), a mobile station (Mobile Station, called “MS”), or a mobile terminal ( Mobile Terminal), etc.
  • the terminal can communicate with one or more core networks via a Radio Access Network (“RAN")
  • the user equipment can be a mobile phone (or “cellular", , telephone) or a computer with a mobile terminal, etc.
  • the user device can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges voice and/or data with the wireless access network.
  • FIG. 1 illustrates a method 100 of determining a GRE tunnel, such as performed by a first gateway device, in accordance with an embodiment of the present invention. As shown in FIG. 1, the method 100 includes:
  • the first gateway device receives a dynamic host configuration protocol DHCP request message sent by the access station, where the DHCP request message is used to request to allocate an internet protocol IP address to the terminal accessing the access station.
  • the first gateway device After receiving the DHCP request message, the first gateway device includes a P different from the first gateway device in addition to the Internet Protocol (Internet Protocd, hereinafter referred to as ⁇ ') address assigned to the terminal in the DHCP response message.
  • the gateway IP address of the address so that the access station determines a universal route encapsulation GRE tunnel for the terminal according to the gateway IP address, which can effectively reduce the load of the first gateway device.
  • the gateway IP address may be an IP address of another gateway device, or may be an IP address of a data plane of the gateway device, which will be described in detail below in conjunction with FIG. 2 and FIG. 4 knife
  • the gateway device allocates a gateway IP address different from the IP address of the gateway device by the gateway device, so that the terminal can access the network through other gateway devices or gateway components, thereby being effective. Reduce the load on the gateway device.
  • the first gateway device determines that the load exceeds a preset threshold, determining a gateway IP address different from the IP address of the first gateway device, so as to determine, for the access terminal, that a tunnel endpoint IP address is different from the first
  • the GRE tunnel of the IP address of the gateway device that is, the terminal does not access the network through the first gateway device, and can access the network through other relatively idle gateway devices.
  • the access amount that the first gateway device can bear is 10w
  • the second gateway device that is currently relatively idle can be determined by using a preset policy, and the IP address of the second gateway device is determined.
  • the gateway is determined as the gateway IP address.
  • the DHCP response message carries the gateway IP address.
  • the gateway device supports the control plane and the data plane is separated.
  • the device can be understood as a gateway control plane component. When the gateway control plane component detects that its access amount exceeds a preset threshold, it determines the IP address of the corresponding gateway data plane component, and receives the DHCP request sent by the terminal next time. In the case of a message, the DHCP response message carries the IP address of the gateway data plane component.
  • determining a gateway IP address different from an IP address of the first gateway device includes:
  • the IP address of the second gateway device is determined as the gateway IP address.
  • the terminal sends a DHCP request message to the access site, where the DHCP request message is used to request the IP address of the terminal; in S12, the access site sends the first gateway device to the first gateway device. Forwarding the DHCP request message; in S13, the first gateway device determines that the gateway load exceeds a preset value, and determines that the IP address of the second gateway device is the gateway IP address of the terminal; in S14, the first gateway device connects The inbound station sends a DHCP response message, and the DHCP response message includes the terminal IP address assigned by the first gateway device to the terminal. In S15, the access station updates the gateway IP address according to the gateway IP address carried in the DHCP response message.
  • the first endpoint IP address of the GRE tunnel of the terminal so as to determine a GRE tunnel for the terminal according to the IP address of the first endpoint of the GRE tunnel and the IP address of the access station; in S16, the access station forwards the DHCP response to the terminal For facilitating the terminal to access the network according to the GRE tunnel.
  • the access station determines the IP address of the first gateway device as the first endpoint IP address of the GRE tunnel of the terminal.
  • An address the IP address of the access station is determined as the second endpoint IP address of the GRE tunnel of the terminal, so that the GRE tunnel first endpoint IP address and the GRE tunnel second endpoint IP address are determined, and the GRE tunnel of the terminal is determined.
  • This part belongs to the action of the access site at the time of startup. It is a prior art and is not cleaned up here.
  • the access station When the access station detects that the DHCP response message sent by the first gateway device carries a gateway IP address different from the IP address of the first gateway device, the first end of the GRE tunnel of the terminal is refreshed according to the gateway IP address. Point the IP address, and then determine the GRE tunnel for the terminal according to the updated GRE tunnel first endpoint IP address and the GRE tunnel second endpoint IP address, that is, the IP address of the access site.
  • the gateway device that receives the DHCP request packet is actually a gateway control.
  • the first gateway device in the embodiment of the present invention includes a gateway control plane component and a gateway data plane component, and the IP address of the first gateway device is an IP address of the gateway control plane component, when the first gateway device After receiving the DHCP request message, the DHCP reply message sent to the access site may include the IP address of the corresponding gateway data plane component.
  • the first gateway device includes a gateway control plane component and a gateway data plane component, where an IP address of the first gateway device is an IP address of the gateway control plane component, and the first gateway The gateway IP address with different IP addresses of the device is the IP address of the data plane part of the gateway.
  • the terminal sends a DHCP request message to the access site, where the DHCP request message is used to request the IP address of the terminal; in S22, the access station controls the gateway to the gateway.
  • the component forwards the DHCP request message.
  • the gateway control plane component determines that the gateway load exceeds a preset threshold, and determines the corresponding gateway data plane IP address as the gateway IP address.
  • the gateway control plane component is connected.
  • the inbound station sends a DHCP response message, where the DHCP response message includes the IP address assigned by the gateway control plane component to the terminal, and the gateway IP address.
  • the access station carries the DHCP response message.
  • Gateway IP address updating the first endpoint IP address of the GRE tunnel of the terminal, so as to determine a GRE tunnel for the terminal according to the IP address of the first endpoint of the GRE tunnel and the IP address of the access station; in S26, the access site
  • the DHCP response message is forwarded to the terminal, so that the terminal accesses the network according to the GRE tunnel.
  • the first gateway device may separately allocate DHCP request messages according to different terminals. Different gateway IP addresses are provided, so that different GRE tunnels can be determined for different terminals of the same access site, so that different terminals can access the network according to different GRE tunnels, which can improve the user experience on the other hand.
  • the load of the first gateway device can be effectively reduced, and other gateway devices can be reasonably utilized, thereby improving resource utilization.
  • gateway control plane component of Figure 3 corresponds to the first gateway device in the embodiment of the present invention.
  • the first gateway device may also determine different gateway IP addresses for different terminals. Specifically, for example, when receiving the DHCP request message of the first terminal, assigning the IP address of the first gateway device to the same The gateway IP address of the first terminal; when receiving the DHCP request message of the second terminal, assigning the IP address of the second gateway device to the gateway IP address of the second terminal; receiving the DHCP of the third terminal When the packet is requested, the IP address of the third gateway device is assigned as the gateway IP address of the third terminal; when the DHCP request packet of the fourth terminal is received, the IP address of the first gateway device is assigned to the packet.
  • gateway IP address of the fourth terminal when receiving the DHCP request message of the fifth terminal, assigning the IP address of the second gateway device to the gateway IP address of the second terminal; For the DHCP request messages of different terminals received in sequence, the corresponding ones are selected from the IP addresses of the first gateway device, the second gateway device, and the third gateway device. Gateway IP address.
  • the IP address different from itself may be used as the gateway of the terminal.
  • the IP address is such that the terminal accesses the network through other gateway devices or gateway data plane components to reduce the load of the first gateway device.
  • the first gateway device allocates different priorities to the terminal, and may adopt different policies, which is not limited by the embodiment of the present invention.
  • the gateway device allocates a gateway IP address different from the IP address of the gateway device, so that the terminal accessing the same access site can access the network through different GRE tunnels. Therefore, the load of the gateway device can be effectively reduced.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • a method 200 for determining a GRE tunnel according to an embodiment of the present invention may be performed, for example, by an access site, and the method 200 includes:
  • S210 Send a dynamic host configuration protocol DHCP request message to the first gateway device, where the DHCP request message is used to request an IP address to be allocated to the terminal accessing the access site.
  • S230 Determine, according to the gateway IP address in the DHCP response file, the universal routing encapsulation GRE tunnel of the terminal.
  • the gateway IP address assigned to the terminal is updated to The gateway IP address, thereby determining a GRE tunnel for the terminal to the new gateway device, can effectively reduce the load of the first gateway device.
  • the gateway device allocates a gateway IP address different from the IP address of the gateway device, so that the terminal accessing the same access site can access the network through different GRE tunnels. Therefore, the load of the gateway device can be effectively reduced.
  • the configuration protocol called "DHCP" obtains the IP address of the first gateway device from the access site controller, and determines the IP address of the first gateway device as the first endpoint IP address of the GRE tunnel by default.
  • the IP address of the access site is determined as the second endpoint IP address of the GRE tunnel.
  • the access station receives the DHCP response message sent by the first gateway device, and when the access station detects that the DHCP response message includes the gateway IP address, and the gateway IP address and the first gateway device
  • the IP address is different
  • the first endpoint IP address of the GRE tunnel originally allocated to the terminal is updated, that is, the gateway IP address included in the DHCP response message is determined as the first endpoint IP address of the GRE tunnel of the terminal, so as to facilitate the
  • the terminal accesses the network by accessing other gateway devices different from the first gateway device.
  • the load of the first gateway device can be effectively reduced.
  • the DHCP sent by the first gateway device is received. Before answering the message, the method also includes:
  • the IP address of the gateway may be associated with the terminal IP address of the terminal, so that when the terminal requests access to the network next time, the access terminal directly according to the gateway The IP address determines the GRE tunnel for the terminal, which can effectively reduce the load of the first gateway device.
  • the method further includes:
  • the terminal IP address of the terminal is associated with the gateway IP address, so that the next time the terminal accesses the access site, the GRE tunnel of the terminal is determined according to the gateway IP address.
  • the gateway IP address is an IP address with the second gateway device.
  • the first gateway device includes a gateway control plane component and a gateway data plane component, where an IP address of the first gateway device is an IP address of the gateway control plane component, and the gateway IP address is The IP address of the gateway data plane component.
  • the access site may specifically be an access point (Access Point, referred to as "AP”) or an access controller (Access Controller, called “AC”) or a logical entity such as a Fat AP.
  • AP Access Point
  • AC Access Controller
  • logical entity such as a Fat AP.
  • the embodiment of the invention is not limited thereto.
  • the gateway device allocates a gateway IP address different from the IP address of the gateway device, so that the terminal accessing the same access site can access the network through different GRE tunnels. Therefore, the load of the gateway device can be effectively reduced.
  • the method for determining a GRE tunnel according to an embodiment of the present invention is described in detail above with reference to FIG. 1 to FIG. 4, and a gateway device and an access site according to an embodiment of the present invention will be described in detail below with reference to FIG. 5 to FIG.
  • FIG. 5 shows a schematic block diagram of a gateway device 300 in accordance with an embodiment of the present invention.
  • the gateway device 300 includes:
  • the receiving module 310 is configured to receive a dynamic host configuration protocol DHCP request message sent by the access station, where the DHCP request message is used to request to allocate an internet protocol IP address to the terminal accessing the access station;
  • the determining module 320 is configured to determine, when determining that the load of the gateway device exceeds a preset threshold, a gateway IP address different from an IP address of the gateway device;
  • the sending module 330 is configured to send a DHCP response message to the access station, where the DHCP response message includes the gateway IP address and a terminal IP address assigned to the terminal, so that the access station is configured according to the gateway IP address.
  • the terminal determines a generic route encapsulation GRE tunnel.
  • the gateway device allocates a gateway IP address different from the IP address of the gateway device, so that the terminal accessing the same access site can access the network through different GRE tunnels. Therefore, the load of the gateway device can be effectively reduced.
  • the determining module is specifically configured to determine an IP address of the second gateway device as the gateway IP address.
  • the first gateway device includes a gateway control plane component and a gateway data plane component, where an IP address of the first gateway device is an IP address of the gateway control plane component, and the first gateway The gateway IP address with different IP addresses of the device is the IP address of the data plane part of the gateway.
  • the first gateway device in the method of determining the GRE tunnel, and the above-mentioned and other operations and/or functions of the respective modules in the gateway device 300 are respectively implemented in order to implement the corresponding processes of the respective methods in FIG. 1 to FIG. This will not be repeated here.
  • the gateway device allocates a gateway IP address different from the IP address of the gateway device, so that the terminal accessing the same access site can access the network through different GRE tunnels. Therefore, the load of the gateway device can be effectively reduced.
  • the gateway device 300 according to an embodiment of the present invention is described in detail above with reference to FIG. 5, and the access site 400 according to an embodiment of the present invention will be described in detail below with reference to FIG.
  • FIG. 6 shows a schematic block diagram of an access site 400 in accordance with an embodiment of the present invention.
  • the access point 400 includes:
  • the sending module 410 is configured to send, to the first gateway device, a dynamic host configuration protocol DHCP request message, where the DHCP request message is used to request an IP address to be allocated to the terminal accessing the access station, and the receiving module 420 is configured to receive a DHCP response message sent by the first gateway device, where the DHCP response message includes a gateway IP address and a terminal IP address allocated to the terminal, where the gateway IP address is different from the IP address of the first gateway device;
  • the determining module 430 is configured to determine, according to the gateway IP address in the DHCP response message, a universal routing encapsulation GRE tunnel of the terminal.
  • the gateway device allocates a gateway IP address different from the IP address of the gateway device, so that the terminal accessing the same access site can access the network through different GRE tunnels. Therefore, the load of the gateway device can be effectively reduced.
  • the determining module is further configured to: determine, before the receiving module receives the DHCP response message sent by the first gateway device, the IP address of the first gateway device as the terminal IP address of the first endpoint of the GRE tunnel;
  • the determining module is further configured to: determine an IP address of the access site as a second endpoint IP address of the GRE tunnel of the terminal;
  • the determining module is further configured to: re-determine the IP address of the first endpoint of the GRE tunnel of the terminal according to the DHCP response packet, where the IP address of the first endpoint of the re-determined GRE tunnel is the IP address of the gateway;
  • the determining module is further configured to: determine, according to the re-determined GRE tunnel first endpoint IP address and the GRE tunnel second endpoint IP address, the GRE tunnel of the terminal.
  • the access site further includes:
  • the association module 450 is configured to associate the terminal IP address of the terminal with the gateway IP address, so that the next time the terminal accesses the access site, the GRE tunnel of the terminal is determined according to the gateway IP address.
  • the gateway IP address determined by the determining module is an IP address of the second gateway device.
  • the first gateway device includes a gateway control plane component and a gateway data plane component, where an IP address of the first gateway device is an IP address of the gateway control plane component, and the determining module determines The gateway IP address is the IP address of the gateway data plane component.
  • an access site 400 in accordance with an embodiment of the present invention may correspond to an access site in a method of determining a GRE tunnel in accordance with an embodiment of the present invention, and that the above and other operations and/or functions of the various modules in the access site 400 In order to implement the corresponding processes of the respective methods in FIG. 1 to FIG. 4, for the sake of cleaning, no further details are provided herein.
  • the gateway device allocates a gateway IP address different from the IP address of the gateway device, so that the terminal accessing the same access site can access the network through different GRE tunnels. Therefore, the load of the gateway device can be effectively reduced.
  • an embodiment of the present invention further provides a gateway device 500, which includes a processor 510, a memory 520, a bus system 530, a receiver 540, and a transmitter 550.
  • the processor 510, the memory 520, the receiver 540, and the transmitter 550 are connected by a bus system 530, where the memory 520 is used to store instructions, and the processor 510 is configured to execute instructions stored in the memory 520 to control the receiver 540 to receive.
  • Signal and control transmitter 550 to send a signal.
  • the receiver 540 is configured to receive a dynamic host configuration protocol DHCP request message sent by the access station, where the DHCP request message is used to request to allocate an internet protocol IP address to the terminal accessing the access site;
  • the device 510 is configured to: when determining that the load of the gateway device exceeds a preset threshold, determine a gateway IP address different from an IP address of the gateway device;
  • the transmitter 550 is configured to send a DHCP response message to the access site,
  • the DHCP response includes the gateway IP address and a terminal IP address assigned to the terminal, so that the access station determines a universal route encapsulation GRE tunnel for the terminal according to the gateway IP address.
  • the gateway device allocates a gateway IP address different from the IP address of the gateway device, so that the terminal accessing the same access site can access the network through different GRE tunnels. Therefore, the load of the gateway device can be effectively reduced.
  • the processor 510 may be a central processing unit (Central Processing Unit), which may also be other general-purpose processors, digital signal processors (DSP). ), application specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 520 can include read only memory and random access memory and provides instructions and data to the processor 510. A portion of the memory 520 may also include a non-volatile random access memory. For example, the memory 520 can also store information of the device type.
  • the bus system 530 may include a power bus, a control bus, and a status signal bus in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 530 in the figure.
  • the steps of the above method may be completed by an integrated logic circuit of hardware in the processor 510 or an instruction in the form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software modules can be located in random memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, etc., which are well established in the art.
  • the storage medium is located in the memory 520.
  • the processor 510 reads the information in the memory 520 and completes the steps of the above method in combination with the hardware. To avoid repetition, it will not be described in detail here.
  • the processor 510 is specifically configured to determine an IP address of the second gateway device as the gateway IP address.
  • the processor 510 is further configured to determine, by using the IP address of the gateway data plane component corresponding to the first gateway device, the gateway IP address.
  • the first gateway device includes a gateway control plane component and a gateway data plane component, where an IP address of the first gateway device is an IP address of the gateway control plane component, and the first gateway device The IP address of the gateway with different IP addresses is the IP address of the data plane part of the gateway.
  • the first gateway device in the method of determining the GRE tunnel may also correspond to the gateway device 300 according to an embodiment of the present invention, and the above and other operations and/or functions of the respective modules in the gateway device 500 are respectively implemented in order to implement FIG. 1 to FIG. The corresponding process of each method in 4, for the sake of cleaning, will not be repeated here.
  • an embodiment of the present invention further provides an access site 600, which includes a processor 610, a memory 620, a bus system 630, a receiver 640, and a transmitter 650.
  • the processor 610, the memory 620, the receiver 640, and the transmitter 650 are connected by a bus system 630.
  • the memory 620 is configured to store instructions
  • the processor 610 is configured to execute the instructions stored in the memory 620 to control the receiver 640 to receive.
  • the transmitter 650 is configured to send a dynamic host configuration protocol (DHCP) request message to the first gateway device, where the DHCP request message is used to request an IP address to be allocated to the terminal accessing the access station; the receiver 640 And receiving the DHCP response message sent by the first gateway device, where the DHCP response message includes a gateway IP address and a terminal IP address allocated to the terminal, where the gateway IP address is different from the IP address of the first gateway device.
  • the processor 610 is configured to determine, according to the gateway IP address in the DHCP response message, a universal route encapsulation GRE tunnel of the terminal.
  • the gateway device allocates a gateway IP address different from the IP address of the gateway device, so that the terminal accessing the same access site can access the network through different GRE tunnels. Therefore, the load of the gateway device can be effectively reduced.
  • the processor 610 may be a central processing unit (Central Processing Unit), which may be other general-purpose processors, digital signal processors (DSP). ), application specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 620 can include read only memory and random access memory and provides instructions and data to the processor 610. A portion of memory 620 may also include non-volatile random access memory. For example, the memory 620 can also store information of the device type.
  • the bus system 630 may include a power bus, a control bus, and a status signal bus in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 630 in the figure.
  • each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 610 or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software modules can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 620.
  • the processor 610 reads the information in the memory 620 and completes the steps of the above method in combination with hardware. To avoid repetition, it will not be described in detail here.
  • the processor 610 is further configured to: determine, before the receiving module receives the DHCP response message sent by the first gateway device, the IP address of the first gateway device as the GRE of the terminal. a first endpoint IP address of the tunnel; the processor 610 is further configured to: determine an IP address of the access site as a second endpoint IP address of the GRE tunnel of the terminal; the processor 610 is further configured to: according to the DHCP response report Re-determining the first endpoint IP address of the GRE tunnel of the terminal, the first endpoint IP address of the re-determined GRE tunnel is the gateway IP address; the processor 610 is further configured to: according to the re-determined GRE tunnel The first endpoint IP address and the second endpoint IP address of the GRE tunnel determine the GRE tunnel of the terminal.
  • the processor 610 is further configured to: associate the terminal IP address of the terminal with the gateway IP address, so that the next time the terminal accesses the access site, according to the gateway IP The address determines the GRE tunnel for the terminal.
  • the gateway IP address is an IP address with the second gateway device.
  • the first gateway device includes a gateway control plane component and a gateway data plane component, where an IP address of the first gateway device is an IP address of the gateway control plane component, and the gateway IP address is the gateway The IP address of the data plane component.
  • the access site 600 may correspond to an access site in a method for determining a GRE tunnel according to an embodiment of the present invention, and may correspond to an access site 400 according to an embodiment of the present invention, and access
  • the foregoing and other operations and/or functions of the various modules in the station 600 are respectively omitted in order to implement the corresponding processes of the respective methods in FIG. 1 to FIG.
  • the gateway device allocates a gateway IP address different from the IP address of the gateway device, so that the terminal accessing the same access site can access the network through different GRE tunnels. Therefore, the load of the gateway device can be effectively reduced.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the components displayed for the unit may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present invention, or the part contributing to the prior art, or the part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • the program includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, and the storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM). , Random Access Memory ), a variety of media that can store program code, such as a disk or a disc.

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Abstract

 本发明实施例提供一种确定GRE隧道的方法、网关设备和接入站点,该方法包括:第一网关设备接收接入站点发送的动态主机配置协议DHCP请求报文,该DHCP请求报文用于请求为接入到该接入站点的终端分配网际协议IP地址;当确定该第一网关设备的负载超过预设阈值时,确定与该第一网关设备的IP地址不同的网关IP地址;向该接入站点发送DHCP应答报文,该DHCP应答报文包括该网关IP地址和为该终端分配的终端IP地址,以便于该接入站点根据该网关IP地址为该终端确定通用路由封装GRE隧道。本发明实施例的确定GRE隧道的方法、网关设备和接入站点,通过网关设备为接入终端分配不同于该网关设备的IP地址的网关IP地址,能够有效降低该网关设备的负荷。

Description

确定 GRE隧道的方法、 网关设备和接入站点 技术领域
本发明实施例涉及通信领域, 并且更具体地, 涉及一种确定 GRE隧道 的方法、 网关设备和接入站点。 背景技术
在现有无线局域网 ( Wireless Local Area Network, 筒称为 "WLAN" ) 部署通用路由封装 (Generic Routing Encapsulation, 筒称为 "GRE" )应用的组 网方法中, 接入点 (Access Point, 筒称为 "AP " )启动后会通过动态主机 配置协议 ( Dynamic Host Configuration Protocol, 筒称为 "DHCP" )过程从 接入控制器( Access Controller, 筒称为 "AC" )获取到 Wi-Fi网关对应的网 关 IP地址, 并且此后该网关 IP地址不发生改变, 因此对于接入同一 AP的 不同的终端, 只能提供相同一条 GRE隧道, 当用户接入量很大的时候, 对 于该同一个 Wi-Fi 网关负荷太重, 同时,现有技术中 AP/AC与 Wi-Fi GW之 间的 GRE隧道不支持动态协商, 只能在 AC/AP上配置, 或者由 AC指定给 AP。
因此, 需要提出一种新的确定 GRE隧道的方法, 以降低网关设备的负 荷。 发明内容
本发明实施例提供一种确定 GRE隧道的方法、 网关设备和接入站点, 通过网关设备为接入的终端分配不同于该网关设备的 IP地址的网关 IP地址, 能够有效降低该网关设备的负荷。
第一方面, 提供了一种确定 GRE隧道的方法, 该方法包括: 第一网关 设备接收接入站点发送的动态主机配置协议 DHCP请求报文, 该 DHCP请 求报文用于请求为接入到该接入站点的终端分配网际协议 IP地址; 当确定 该第一网关设备的负载超过预设阈值时, 确定与该第一网关设备的 IP地址 不同的网关 IP地址; 向该接入站点发送 DHCP应答报文, 该 DHCP应答报 文包括该网关 IP地址和为该终端分配的终端 IP地址, 以便于该接入站点根 据该网关 IP地址为该终端确定通用路由封装 GRE隧道。 结合第一方面, 在第一方面的第一种可能的实现方式中, 该确定与该第 一网关设备的 IP地址不同的网关 IP地址, 包括:
将第二网关设备的 IP地址确定为该网关 IP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, 该第一网关设 备包括网关控制面部件和网关数据面部件, 该第一网关设备的 IP地址为该 网关控制面部件的 IP地址,与该第一网关设备的 IP地址不同的网关 IP地址 为该网关数据面部件的 IP地址。
第二方面, 提供了一种确定 GRE隧道的方法, 该方法包括: 向第一网 关设备发送动态主机配置协议 DHCP请求报文, 该 DHCP请求报文用于请 求为接入到该接入站点的终端分配 IP地址; 接收该第一网关设备发送的 DHCP应答报文, 该 DHCP应答报文包括网关 IP地址和为该终端分配的终 端 IP地址, 该网关 IP地址与该第一网关设备的 IP地址不同; 才艮据该 DHCP 应答报文中的该网关 IP地址, 确定该终端的通用路由封装 GRE隧道。
结合第二方面, 在第二方面的第一种可能的实现方式中, 在该接收该第 一网关设备发送的 DHCP应答报文之前, 该方法还包括: 将该第一网关设备 的 IP地址确定为该终端的 GRE隧道第一端点 IP地址; 将该接入站点的 IP 地址确定为该终端的 GRE隧道第二端点 IP地址; 该确定该终端的通用路由 封装 GRE隧道, 包括: 根据该 DHCP应答报文, 重新确定该终端的该 GRE 隧道第一端点 IP地址, 该重新确定的 GRE隧道第一端点 IP地址为该网关 IP地址; 根据该重新确定的 GRE隧道第一端点 IP地址和该 GRE隧道第二 端点 IP地址, 确定该终端的该 GRE隧道。
结合第二方面或第二方面的第一种可能的实现方式,在第二方面的第二 种可能的实现方式中, 该方法还包括: 将该终端的终端 IP地址与该网关 IP 地址相关联, 以便于下次该终端接入该接入站点时, 根据该网关 IP地址确 定该终端的该 GRE隧道。
结合第二方面或第二方面的第一种或第二种可能的实现方式中的任一 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, 该网关 IP地 址为与第二网关设备的 IP地址。
结合第二方面或第二方面的第一种至第三种可能的实现方式中的任一 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, 该第一网关设 备包括网关控制面部件和网关数据面部件, 该第一网关设备的 IP地址为该 网关控制面部件的 IP地址, 该网关 IP地址为该网关数据面部件的 IP地址。 第三方面, 提供了一种网关设备, 该网关设备比包括: 接收模块, 用于 接收接入站点发送的动态主机配置协议 DHCP请求报文, 该 DHCP请求报 文用于请求为接入到该接入站点的终端分配网际协议 IP地址; 确定模块, 用于当确定该网关设备的负载超过预设阈值时, 确定与该网关设备的 IP地 址不同的网关 IP地址; 发送模块, 用于向该接入站点发送 DHCP应答报文, 该 DHCP应答报文包括该网关 IP地址和为该终端分配的终端 IP地址, 以便 于该接入站点根据该网关 IP地址为该终端确定通用路由封装 GRE隧道。
结合第三方面, 在第三方面的第一种可能的实现方式中, 该确定模块具 体用于, 将第二网关设备的 IP地址确定为该网关 IP地址。
结合第三方面, 在第三方面的第二种可能的实现方式中, 该第一网关设 备包括网关控制面部件和网关数据面部件, 该第一网关设备的 IP地址为该 网关控制面部件的 IP地址,与该第一网关设备的 IP地址不同的网关 IP地址 为该网关数据面部件的 IP地址。
第四方面, 提供了一种接入站点, 该接入站点包括: 发送模块, 用于向 第一网关设备发送动态主机配置协议 DHCP请求 文, 该 DHCP请求 4艮文 用于请求为接入到该接入站点的终端分配 IP地址; 接收模块, 用于接收该 第一网关设备发送的 DHCP应答报文, 该 DHCP应答报文包括网关 IP地址 和为该终端分配的终端 IP地址,该网关 IP地址与该第一网关设备的 IP地址 不同; 确定模块, 用于根据该 DHCP应答报文中的该网关 IP地址, 确定该 终端的通用路由封装 GRE隧道。
结合第四方面, 在第四方面的第一种可能的实现方式中, 该确定模块还 用于, 在接收模块接收到该第一网关设备发送的 DHCP应答报文之前,将该 第一网关设备的 IP地址确定为该终端的 GRE隧道第一端点 IP地址;该确定 模块还用于,将该接入站点的 IP地址确定为该终端的 GRE隧道第二端点 IP 地址; 该确定模块具体还用于: 根据该 DHCP应答报文, 重新确定该终端的 该 GRE隧道第一端点 IP地址, 该重新确定的 GRE隧道第一端点 IP地址为 该网关 IP地址; 该确定模块具体还用于: 根据该重新确定的 GRE隧道第一 端点 IP地址和该 GRE隧道第二端点 IP地址, 确定该终端的该 GRE隧道。
结合第四方面或第四方面的第一种可能的实现方式,在第四方面的第二 种可能的实现方式中, 该接入站点还包括: 关联模块, 用于将该终端的终端 IP地址与该网关 IP地址相关联, 以便于下次该终端接入该接入站点时, 根 据该网关 IP地址确定该终端的该 GRE隧道。
结合第四方面或第四方面的第一种或第二种可能的实现方式中的任一 种可能的实现方式, 在第四方面的第三种可能的实现方式中, 该确定模块确 定的该网关 IP地址为与第二网关设备的 IP地址。
结合第四方面或第四方面的第一种至第三种可能的实现方式中的任一 种可能的实现方式, 在第四方面的第四种可能的实现方式中, 该第一网关设 备包括网关控制面部件和网关数据面部件, 该第一网关设备的 IP地址为该 网关控制面部件的 IP地址, 该确定模块确定的该网关 IP地址为该网关数据 面部件的 IP地址。
综上所述, 本发明实施例的确定 GRE隧道的方法、 网关设备和接入站 点, 通过网关设备为终端分配与该网关设备的 IP地址不同的网关 IP地址, 能够使得该终端通过其他网关设备或者网关部件接入网络,从而能够有效降 低该网关设备的负荷。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对实施例或现有技 术描述中所需要使用的附图作筒单地介绍, 显而易见地, 下面描述中的附图 仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造 性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1是本发明实施例的确定 GRE隧道的方法的示意性流程图。
图 2是本发明实施例的确定 GRE隧道的方法的另一示意性流程图。 图 3是本发明实施例的确定 GRE隧道的方法的再一示意性流程图。 图 4是本发明另一实施例的确定 GRE隧道的方法的示意性流程图。 图 5示出了本发明实施例的网关设备的示意性框图。
图 6示出了本发明实施例的接入站点的示意性框图。
图 7示出了本发明另一实施例提供的一种网关设备的示意性框图。 图 8示出了本发明另一实施例提供的一种接入站点的示意性框图。 具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例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作出创 造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
在本发明实施例中, 接入站点可以是无线局域网络 (Wireless Local Area Networks, 筒称为 "WLAN" )中的基站,接入站点还可以是微基站( Micro ), 也可以是微微基站(Pico ), 还可以是家庭基站, 也可称之为毫微微蜂窝基站 ( femto )或接入点 (AP, Access Point ), 本发明并不限定。 以下, 为了便 于理解, 以 AP为例, 对接入站点的动作进行说明。
还应理解,在本发明实施例中,终端( Terminal )可称之为用户设备( User Equipment, 筒称为 "UE" )、 移动台 ( Mobile Station, 筒称为 "MS" )或移 动终端 (Mobile Terminal ) 等, 该终端可以经无线接入网 (Radio Access Network, 筒称为 "RAN" )与一个或多个核心网进行通信, 例如, 用户设备 可以是移动电话(或称为 "蜂窝,, 电话)或具有移动终端的计算机等, 例如, 用户设备还可以是便携式、 袖珍式、 手持式、 计算机内置的或者车载的移动 装置, 它们与无线接入网交换语音和 /或数据。
图 1示出了本发明实施例的确定 GRE隧道的方法 100,该方法 100例如 由第一网关设备执行。 如图 1所示, 该方法 100包括:
110, 第一网关设备接收接入站点发送的动态主机配置协议 DHCP请求 报文,该 DHCP请求报文用于请求为接入到该接入站点的终端分配网际协议 IP地址;
S120, 当确定该第一网关设备的负载超过预设阈值时, 确定与该第一网 关设备的 IP地址不同的网关 IP地址;
S130, 向该接入站点发送 DHCP应答报文, 该 DHCP应答报文包括该 网关 IP地址和为该终端分配的终端 IP地址, 以便于该接入站点才艮据该网关 IP地址为该终端确定通用路由封装 GRE隧道。
第一网关设备在接收到 DHCP请求报文后, 在 DHCP应答报文中除了 包括为该终端分配的网际协议 ( Internet Protocd, 简称为 ΊΡ' ) 地址外, 还包括不同于第一网关设备的 P地址的网关 IP地址, 以便于该接入站点根 据该网关 IP地址为该终端确定通用路由封装 GRE隧道, 能够有效降低该第 一网关设备的负荷。 具体地该网关 IP地址可以是其他网关设备的 IP地址, 也可以是网关设备的数据面的 IP地址, 下文将结合图 2和图 3进行详细介 4刀
因此, 本发明实施例的确定 GRE隧道的方法, 通过网关设备为终端分 配与该网关设备的 IP地址不同的网关 IP地址, 能够使得该终端通过其他网 关设备或者网关部件接入网络, 从而能够有效降低该网关设备的负荷。
在 S120中, 当第一网关设备确定负载超过预设阈值时, 确定与该第一 网关设备的 IP地址不同的网关 IP地址, 以便于为接入终端确定一个隧道端 点 IP地址不同于该第一网关设备的 IP地址的 GRE隧道,即该终端不通过该 第一网关设备接入网络, 可以通过其他较为空闲的网关设备接入网络。
具体地,假设第一网关设备能够承受的接入量为 10w,当接入量超过 9W 时, 可以通过预设策略确定当前相对空闲的第二网关设备, 并将该第二网关 设备的 IP地址确定为网关 IP地址, 当再次接受到来自终端的 DHCP请求报 文时, 在 DHCP应答报文携带该网关 IP地址; 或者, 在网关设备支持控制 面和数据面分离的场景下, 该第一网关设备可以理解为一个网关控制面部 件, 当该网关控制面部件检测到自身的接入量超过预设阈值时, 确定对应地 网关数据面部件的 IP地址, 当下次接受到终端发来的 DHCP请求 4艮文时, 在 DHCP应答报文携带该网关数据面部件的 IP地址。
在本发明实施例中, 可选地, 该确定与该第一网关设备的 IP地址不同 的网关 IP地址, 包括:
将第二网关设备的 IP地址确定为该网关 IP地址。
具体地,如图 2所示,在 S11中,终端向接入站点发送 DHCP请求 4艮文, 该 DHCP请求 文用于请求该终端的 IP地址; 在 S12中, 接入站点向第一 网关设备转发该 DHCP请求报文; 在 S13中, 第一网关设备确定网关负载超 过预设阐值, 确定第二网关设备的 IP地址为该终端的网关 IP地址; 在 S14 中, 第一网关设备向接入站点发送 DHCP应答报文, 该 DHCP应答报文中 除了包括第一网关设备为该终端分配的终端 IP地址; 在 S15中, 接入站点 根据 DHCP应答报文中携带的网关 IP地址,更新该终端的 GRE隧道第一端 点 IP地址, 以便于根据该 GRE隧道第一端点 IP地址和接入站点的 IP地址 为该终端确定 GRE隧道; 在 S16中, 接入站点向终端转发该 DHCP应答 文, 以便于该终端根据该 GRE隧道接入网络。
应理解, 接入站点在接收所述第一网关设备发送的 DHCP应答报文之 前, 已经将第一网关设备的 IP地址确定为该终端的 GRE隧道第一端点 IP 地址, 将该接入站点的 IP地址确定为该终端的 GRE隧道第二端点 IP地址, 以便于该 GRE隧道第一端点 IP地址和 GRE隧道第二端点 IP地址, 确定该 终端的 GRE隧道, 这部分属于接入站点在启动时的动作, 为现有技术, 为 了筒洁, 这里不再赘述。
当接入站点检测到第一网关设备发送的 DHCP应答报文中携带不同于 该第一网关设备的 IP地址的网关 IP地址时,才艮据该网关 IP地址刷新该终端 的 GRE隧道第一端点 IP地址, 然后根据更新后的 GRE隧道第一端点 IP地 址与 GRE隧道第二端点 IP地址即接入站点的 IP地址为该终端确定 GRE隧 道。
应理解, 在网关设备的控制面和数据面分离的场景下, 对应的网关控制 面部件和网关数据面部件的 IP地址不同, 这种情况下, 接收 DHCP请求报 文的网关设备其实是网关控制面部件, 即本发明实施例中的第一网关设备包 括网关控制面部件和网关数据面部件, 且该第一网关设备的 IP地址为该网 关控制面部件的 IP地址, 当该第一网关设备接收到 DHCP请求报文后, 在 向接入站点发送的 DHCP应答 文中可以包括都对应的网关数据面部件的 IP地址。
在本发明实施例中, 可选地, 该第一网关设备包括网关控制面部件和网 关数据面部件, 该第一网关设备的 IP地址为该网关控制面部件的 IP地址, 与该第一网关设备的 IP地址不同的网关 IP地址为该网关数据面部件的 IP地 址。
具体地,如图 3所示,在 S21中,终端向接入站点发送 DHCP请求报文, 该 DHCP请求 4艮文用于请求该终端的 IP地址; 在 S22中, 接入站点向网关 控制面部件转发该 DHCP请求 4艮文; 在 S23中, 网关控制面部件确定网关负 载超于预设阈值, 将对应的网关数据面 IP地址确定为网关 IP地址, 在 S24 中, 网关控制面部件向接入站点发送 DHCP应答报文, 该 DHCP应答报文 中除了包括网关控制面部件为该终端分配的 IP地址,还包括该网关 IP地址; 在 S25中, 接入站点根据 DHCP应答报文中携带的网关 IP地址, 更新该终 端的 GRE隧道第一端点 IP地址, 以便于根据该 GRE隧道第一端点 IP地址 和接入站点的 IP地址为该终端确定 GRE隧道; 在 S26中, 接入站点向终端 转发该 DHCP应答报文, 以便于该终端根据该 GRE隧道接入网络。
应理解, 该第一网关设备可以根据不同终端的 DHCP请求报文, 分别分 配不同的网关 IP地址, 以便于对于同一接入站点的不同的终端可以确定不 同的 GRE隧道, 从而以便于不同的终端根据不同的 GRE隧道接入网络, 一 方面能够提高用户体验, 另一方面可以有效降低第一网关设备的负荷, 同时 合理利用了其他网关设备, 能够提高资源利用率。
应理解, 图 3中的网关控制面部件与本发明实施例中的第一网关设备相 对应。
还应理解, 第一网关设备还可以对不同的终端确定不同网关 IP地址, 具体地, 例如当接收到第一终端的 DHCP请求报文时, 为其分配该第一网关 设备的 IP地址作为该第一终端的网关 IP地址; 当接收到第二终端的 DHCP 请求报文时, 为其分配该第二网关设备的 IP地址作为该第二终端的网关 IP 地址; 当接收到第三终端的 DHCP请求报文时, 为其分配该第三网关设备的 IP地址作为该第三终端的网关 IP地址; 当接收到第四终端的 DHCP请求报 文时, 为其分配该第一网关设备的 IP地址作为该第四终端的网关 IP地址; 当接收到第五终端的 DHCP请求报文时, 为其分配该第二网关设备的 IP地 址作为该第二终端的网关 IP地址; 后面以此类推, 即对于依次接收到的不 同终端的 DHCP请求报文, 分别从第一网关设备、 第二网关设备和第三网关 设备的 IP地址中轮选出对应的网关 IP地址。
应理解, 在本发明实施例中, 当第一网关设备确定自身的接入负载超过 预设阈值时, 当再次接收到 DHCP请求报文时, 可以将不同于自身的 IP地 址作为该终端的网关 IP地址, 以使该终端通过其他网关设备或者网关数据 面部件接入网络, 以降低该第一网关设备的负荷。 应理解, 该第一网关设备 为终端分配不同于自身 IP地址, 可以采取不同地策略, 本发明实施例对此 不作限定。
因此, 本发明实施例的确定 GRE隧道的方法, 通过网关设备分配与该 网关设备的 IP地址不同的网关 IP地址, 能够使得对于接入同一接入站点的 终端, 通过不同的 GRE隧道接入网络, 从而能够有效降低该网关设备的负 荷。
应理解, 在本发明的各种实施例中, 上述各过程的序号的大小并不意味 着执行顺序的先后, 各过程的执行顺序应以其功能和内在逻辑确定, 而不应 对本发明实施例的实施过程构成任何限定。
上文中结合图 1至图 3, 从第一网关设备的角度详细描述了根据本发明 实施例的确定 GRE隧道的方法, 下面将结合图 4至图 5,从接入站点的角度 描述根据本发明实施例的确定 GRE隧道的方法。
如图 4所示,根据本发明实施例的确定 GRE隧道的方法 200,例如可以 由接入站点执行, 该方法 200包括:
S210,向第一网关设备发送动态主机配置协议 DHCP请求报文,该 DHCP 请求 文用于请求为接入到该接入站点的终端分配 IP地址;
S220, 接收该第一网关设备发送的 DHCP应答报文, 该 DHCP应答报 文包括网关 IP地址和为该终端分配的终端 IP地址,该网关 IP地址与该第一 网关设备的 IP地址不同;
S230, 才艮据该 DHCP应答 文中的该网关 IP地址, 确定该终端的通用 路由封装 GRE隧道。
当该接入站点检测到第一网关设备发送的 DHCP应答报文中包括网关 IP地址, 且该网关 IP地址与该第一网关设备的 IP地址不同时, 将分配给终 端的网关 IP地址更新为该网关 IP地址, 从而为该终端确定了指向新的网关 设备的 GRE隧道, 能够有效降低该第一网关设备的负荷。
因此, 本发明实施例的确定 GRE隧道的方法, 通过网关设备分配与该 网关设备的 IP地址不同的网关 IP地址, 能够使得对于接入同一接入站点的 终端, 通过不同的 GRE隧道接入网络, 从而能够有效降低该网关设备的负 荷。
应理解, 接入站点启动后会通过动态主机配置协议 ( Dynamic Host
Configuration Protocol, 筒称为 "DHCP" )过程从接入站点控制器获取第一 网关设备的 IP地址,并默认将该第一网关设备的 IP地址确定为 GRE隧道第 一端点 IP地址,将该接入站点的 IP地址确定为 GRE隧道第二端点 IP地址。
在 S220中, 该接入站点接收该第一网关设备发送的 DHCP应答报文, 当该接入站点检测到该 DHCP应答 4艮文中包括网关 IP地址, 且该网关 IP地 址与该第一网关设备的 IP地址不同时, 更新原始为终端分配的 GRE隧道第 一端点 IP地址, 即将该 DHCP应答 4艮文中包括的网关 IP地址确定为该终端 的 GRE隧道第一端点 IP地址, 以便于该终端通过访问不同于第一网关设备 的其他网关设备来接入网络, 在入网用户非常多的时候, 可以有效降低第一 网关设备的负荷。
在本发明实施例中, 可选地,在该接收该第一网关设备发送的 DHCP应 答报文之前, 该方法还包括:
将该第一网关设备的 IP地址确定为该终端的 GRE隧道第一端点 IP地 址;
将该接入站点的 IP地址确定为该终端的 GRE隧道第二端点 IP地址; 该确定该终端的通用路由封装 GRE隧道, 包括:
根据该 DHCP应答报文,重新确定该终端的该 GRE隧道第一端点 IP地 址, 该重新确定的 GRE隧道第一端点 IP地址为该网关 IP地址;
根据该重新确定的 GRE隧道第一端点 IP地址和该 GRE隧道第二端点 IP地址, 确定该终端的该 GRE隧道。
接入站点在更新了终端的 GRE隧道第一端点 IP地址后,可以将网关 IP 地址与该终端的终端 IP地址相关联, 以便于当该终端下次请求接入网络时, 直接根据该网关 IP地址为该终端确定 GRE隧道, 能够有效降低第一网关设 备的负荷。
在本发明实施例中, 可选地, 该方法还包括:
将该终端的终端 IP地址与该网关 IP地址相关联, 以便于下次该终端接 入该接入站点时, 艮据该网关 IP地址确定该终端的该 GRE隧道。
在本发明实施例中, 可选地, 该网关 IP地址为与第二网关设备的 IP地 址。
在本发明实施例中, 可选地, 该第一网关设备包括网关控制面部件和网 关数据面部件, 该第一网关设备的 IP地址为该网关控制面部件的 IP地址, 该网关 IP地址为该网关数据面部件的 IP地址。
还应理解,接入站点具体地,可以是接入点( Access Point,筒称为 "AP " ) 或接入控制器(Access Controller, 筒称为 "AC" )或者 Fat AP等逻辑实体, 本发明实施例对此不作限定。
还应理解, 在本发明的各种实施例中, 上述各过程的序号的大小并不意 味着执行顺序的先后, 各过程的执行顺序应以其功能和内在逻辑确定, 而不 应对本发明实施例的实施过程构成任何限定。
因此, 本发明实施例的确定 GRE隧道的方法, 通过网关设备分配与该 网关设备的 IP地址不同的网关 IP地址, 能够使得对于接入同一接入站点的 终端, 通过不同的 GRE隧道接入网络, 从而能够有效降低该网关设备的负 荷。 上文中结合图 1至图 4,详细描述了根据本发明实施例的确定 GRE隧道 的方法, 下面将结合图 5至图 6, 详细描述根据本发明实施例的网关设备和 接入站点。
图 5示出了根据本本发明实施例的网关设备 300的示意性框图。 如图 5 所示, 该网关设备 300包括:
接收模块 310, 用于接收接入站点发送的动态主机配置协议 DHCP请求 报文,该 DHCP请求报文用于请求为接入到该接入站点的终端分配网际协议 IP地址;
确定模块 320, 用于当确定该网关设备的负载超过预设阈值时, 确定与 该网关设备的 IP地址不同的网关 IP地址;
发送模块 330, 用于向该接入站点发送 DHCP应答报文, 该 DHCP应答 4艮文包括该网关 IP地址和为该终端分配的终端 IP地址, 以便于该接入站点 根据该网关 IP地址为该终端确定通用路由封装 GRE隧道。
因此, 本发明实施例的确定 GRE隧道的方法, 通过网关设备分配与该 网关设备的 IP地址不同的网关 IP地址, 能够使得对于接入同一接入站点的 终端, 通过不同的 GRE隧道接入网络, 从而能够有效降低该网关设备的负 荷。
可选地, 在本发明实施例中, 该确定模块具体用于, 将第二网关设备的 IP地址确定为该网关 IP地址。
可选地, 在本发明实施例中, 该第一网关设备包括网关控制面部件和网 关数据面部件, 该第一网关设备的 IP地址为该网关控制面部件的 IP地址, 与该第一网关设备的 IP地址不同的网关 IP地址为该网关数据面部件的 IP地 址。 定 GRE隧道的方法中的第一网关设备, 并且网关设备 300中的各个模块的 上述和其它操作和 /或功能分别为了实现图 1至图 4中的各个方法的相应流 程, 为了筒洁, 在此不再赘述。
因此, 本发明实施例的确定 GRE隧道的方法, 通过网关设备分配与该 网关设备的 IP地址不同的网关 IP地址, 能够使得对于接入同一接入站点的 终端, 通过不同的 GRE隧道接入网络, 从而能够有效降低该网关设备的负 荷。 上文中结合图 5, 详细描述了根据本发明实施例的网关设备 300, 下面 将结合图 6, 详细描述根据本发明实施例的接入站点 400。
图 6示出了根据本发明实施例的接入站点 400的示意性框图。该接入站 点 400包括:
发送模块 410, 用于向第一网关设备发送动态主机配置协议 DHCP请求 报文,该 DHCP请求报文用于请求为接入到该接入站点的终端分配 IP地址; 接收模块 420, 用于接收该第一网关设备发送的 DHCP应答报文, 该 DHCP应答 4艮文包括网关 IP地址和为该终端分配的终端 IP地址, 该网关 IP 地址与该第一网关设备的 IP地址不同;
确定模块 430, 用于根据该 DHCP应答报文中的该网关 IP地址, 确定 该终端的通用路由封装 GRE隧道。
因此, 本发明实施例的确定 GRE隧道的方法, 通过网关设备分配与该 网关设备的 IP地址不同的网关 IP地址, 能够使得对于接入同一接入站点的 终端, 通过不同的 GRE隧道接入网络, 从而能够有效降低该网关设备的负 荷。
可选地, 在本发明实施例中, 该确定模块还用于, 在接收模块接收到该 第一网关设备发送的 DHCP应答报文之前, 将该第一网关设备的 IP地址确 定为该终端的 GRE隧道第一端点 IP地址;
该确定模块还用于, 将该接入站点的 IP地址确定为该终端的 GRE隧道 第二端点 IP地址;
该确定模块具体还用于: 根据该 DHCP应答报文, 重新确定该终端的该 GRE隧道第一端点 IP地址, 该重新确定的 GRE隧道第一端点 IP地址为该 网关 IP地址;
该确定模块具体还用于: 根据该重新确定的 GRE隧道第一端点 IP地址 和该 GRE隧道第二端点 IP地址, 确定该终端的该 GRE隧道。
可选地, 在本发明实施例中, 该接入站点还包括:
关联模块 450, 用于将该终端的终端 IP地址与该网关 IP地址相关联, 以便于下次该终端接入该接入站点时, 艮据该网关 IP地址确定该终端的该 GRE隧道。
可选地, 在本发明实施例中, 该确定模块确定的该网关 IP地址为与第 二网关设备的 IP地址。 可选地, 在本发明实施例中, 该第一网关设备包括网关控制面部件和网 关数据面部件, 该第一网关设备的 IP地址为该网关控制面部件的 IP地址, 该确定模块确定的该网关 IP地址为该网关数据面部件的 IP地址。
应理解,根据本发明实施例的接入站点 400可对应于本发明实施例的确 定 GRE隧道的方法中的接入站点, 并且接入站点 400中的各个模块的上述 和其它操作和 /或功能分别为了实现图 1至图 4中的各个方法的相应流程,为 了筒洁, 在此不再赘述。
因此, 本发明实施例的确定 GRE隧道的方法, 通过网关设备分配与该 网关设备的 IP地址不同的网关 IP地址, 能够使得对于接入同一接入站点的 终端, 通过不同的 GRE隧道接入网络, 从而能够有效降低该网关设备的负 荷。
如图 7所示,本发明实施例还提供了一种网关设备 500,该网关设备 500 包括处理器 510、 存储器 520、 总线系统 530、 接收器 540和发送器 550。 其 中, 处理器 510、 存储器 520、 接收器 540和发送器 550通过总线系统 530 相连, 该存储器 520用于存储指令, 该处理器 510用于执行该存储器 520存 储的指令, 以控制接收器 540接收信号,并控制发送器 550发送信号。其中, 该接收器 540,用于接收接入站点发送的动态主机配置协议 DHCP请求报文, 该 DHCP请求报文用于请求为接入到该接入站点的终端分配网际协议 IP地 址; 该处理器 510, 用于当确定该网关设备的负载超过预设阈值时, 确定与 该网关设备的 IP地址不同的网关 IP地址; 该发送器 550, 用于向该接入站 点发送 DHCP应答报文, 该 DHCP应答 ^艮文包括该网关 IP地址和为该终端 分配的终端 IP地址, 以便于该接入站点^ f艮据该网关 IP地址为该终端确定通 用路由封装 GRE隧道。
因此, 本发明实施例的确定 GRE隧道的方法, 通过网关设备分配与该 网关设备的 IP地址不同的网关 IP地址, 能够使得对于接入同一接入站点的 终端, 通过不同的 GRE隧道接入网络, 从而能够有效降低该网关设备的负 荷。
应理解,在本发明实施例中,该处理器 510可以是中央处理单元( Central Processing Unit, 筒称为 "CPU" ), 该处理器 510还可以是其他通用处理器、 数字信号处理器( DSP )、专用集成电路( ASIC )、现成可编程门阵列( FPGA ) 或者其他可编程逻辑器件、 分立门或者晶体管逻辑器件、 分立硬件组件等。 通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。 该存储器 520可以包括只读存储器和随机存取存储器, 并向处理器 510 提供指令和数据。存储器 520的一部分还可以包括非易失性随机存取存储器。 例如, 存储器 520还可以存储设备类型的信息。
该总线系统 530除包括数据总线之外, 还可以包括电源总线、 控制总线 和状态信号总线等。 但是为了清楚说明起见, 在图中将各种总线都标为总线 系统 530。
在实现过程中, 上述方法的各步骤可以通过处理器 510中的硬件的集成 逻辑电路或者软件形式的指令完成。结合本发明实施例所公开的方法的步骤 可以直接体现为硬件处理器执行完成, 或者用处理器中的硬件及软件模块组 合执行完成。 软件模块可以位于随机存储器, 闪存、 只读存储器, 可编程只 读存储器或者电可擦写可编程存储器、 寄存器等本领域成熟的存储介质中。 该存储介质位于存储器 520, 处理器 510读取存储器 520中的信息, 结合其 硬件完成上述方法的步骤。 为避免重复, 这里不再详细描述。
可选地, 作为一个实施例, 该处理器 510, 具体用于, 将第二网关设备 的 IP地址确定为该网关 IP地址。
可选地, 作为一个实施例, 该处理器 510, 具体还用于, 将该第一网关 设备对应的网关数据面部件的 IP地址确定为该网关 IP地址。
可选地, 作为一个实施例, 该第一网关设备包括网关控制面部件和网关 数据面部件, 该第一网关设备的 IP地址为该网关控制面部件的 IP地址, 与 该第一网关设备的 IP地址不同的网关 IP地址为该网关数据面部件的 IP地 址。 定 GRE隧道的方法中的第一网关设备, 也可以对应于根据本发明实施例的 网关设备 300,并且网关设备 500中的各个模块的上述和其它操作和 /或功能 分别为了实现图 1至图 4中的各个方法的相应流程, 为了筒洁, 在此不再赘 述。
因此, 本发明实施例的确定 GRE隧道的方法, 通过网关设备分配与该 网关设备的 IP地址不同的网关 IP地址, 能够使得对于接入同一接入站点的 终端, 通过不同的 GRE隧道接入网络, 从而能够有效降低该网关设备的负 荷。 如图 8所示,本发明实施例还提供了一种接入站点 600,该接入站点 600 包括处理器 610、 存储器 620、 总线系统 630、 接收器 640和发送器 650。 其 中, 处理器 610、 存储器 620、 接收器 640和发送器 650通过总线系统 630 相连, 该存储器 620用于存储指令, 该处理器 610用于执行该存储器 620存 储的指令, 以控制接收器 640接收信号,并控制发送器 650发送信号。其中, 该发送器 650,用于向第一网关设备发送动态主机配置协议 DHCP请求报文, 该 DHCP请求报文用于请求为接入到该接入站点的终端分配 IP地址; 该接 收器 640, 用于接收该第一网关设备发送的 DHCP应答报文, 该 DHCP应答 4艮文包括网关 IP地址和为该终端分配的终端 IP地址,该网关 IP地址与该第 一网关设备的 IP地址不同; 该处理器 610, 用于根据该 DHCP应答报文中 的该网关 IP地址, 确定该终端的通用路由封装 GRE隧道。
因此, 本发明实施例的确定 GRE隧道的方法, 通过网关设备分配与该 网关设备的 IP地址不同的网关 IP地址, 能够使得对于接入同一接入站点的 终端, 通过不同的 GRE隧道接入网络, 从而能够有效降低该网关设备的负 荷。
应理解,在本发明实施例中,该处理器 610可以是中央处理单元( Central Processing Unit, 筒称为 "CPU" ), 该处理器 610还可以是其他通用处理器、 数字信号处理器( DSP )、专用集成电路( ASIC )、现成可编程门阵列( FPGA ) 或者其他可编程逻辑器件、 分立门或者晶体管逻辑器件、 分立硬件组件等。 通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
该存储器 620可以包括只读存储器和随机存取存储器, 并向处理器 610 提供指令和数据。存储器 620的一部分还可以包括非易失性随机存取存储器。 例如, 存储器 620还可以存储设备类型的信息。
该总线系统 630除包括数据总线之外, 还可以包括电源总线、 控制总线 和状态信号总线等。 但是为了清楚说明起见, 在图中将各种总线都标为总线 系统 630。
在实现过程中, 上述方法的各步骤可以通过处理器 610中的硬件的集成 逻辑电路或者软件形式的指令完成。 结合本发明实施例所公开的方法的步骤 可以直接体现为硬件处理器执行完成, 或者用处理器中的硬件及软件模块组 合执行完成。 软件模块可以位于随机存储器, 闪存、 只读存储器, 可编程只 读存储器或者电可擦写可编程存储器、 寄存器等本领域成熟的存储介质中。 该存储介质位于存储器 620, 处理器 610读取存储器 620中的信息, 结合其 硬件完成上述方法的步骤。 为避免重复, 这里不再详细描述。
可选地, 作为一个实施例, 该处理器 610还用于: 在接收模块接收到该 第一网关设备发送的 DHCP应答报文之前, 将该第一网关设备的 IP地址确 定为该终端的 GRE隧道第一端点 IP地址; 该处理器 610还用于, 将该接入 站点的 IP地址确定为该终端的 GRE隧道第二端点 IP地址; 该处理器 610 还用于, 根据该 DHCP应答报文, 重新确定该终端的该 GRE隧道第一端点 IP地址, 该重新确定的 GRE隧道第一端点 IP地址为该网关 IP地址; 该处 理器 610还用于, 根据该重新确定的 GRE隧道第一端点 IP地址和该 GRE 隧道第二端点 IP地址, 确定该终端的该 GRE隧道。
可选地, 作为一个实施例, 该处理器 610还用于: 将该终端的终端 IP 地址与该网关 IP地址相关联, 以便于下次该终端接入该接入站点时, 根据 该网关 IP地址确定该终端的该 GRE隧道。
可选地,作为一个实施例,该网关 IP地址为与第二网关设备的 IP地址。 可选地, 作为一个实施例, 该第一网关设备包括网关控制面部件和网关 数据面部件, 该第一网关设备的 IP地址为该网关控制面部件的 IP地址, 该 网关 IP地址为该网关数据面部件的 IP地址。
应理解,根据本发明实施例的接入站点 600可对应于本发明实施例的确 定 GRE隧道的方法中的接入站点, 以及可以对应于根据本发明实施例的接 入站点 400, 并且接入站点 600中的各个模块的上述和其它操作和 /或功能分 别为了实现图 1至图 4中的各个方法的相应流程,为了筒洁,在此不再赘述。
因此, 本发明实施例的确定 GRE隧道的方法, 通过网关设备分配与该 网关设备的 IP地址不同的网关 IP地址, 能够使得对于接入同一接入站点的 终端, 通过不同的 GRE隧道接入网络, 从而能够有效降低该网关设备的负 荷。
本文中术语 "和 /或", 仅仅是一种描述关联对象的关联关系, 表示可以 存在三种关系, 例如, A和 /或 B, 可以表示: 单独存在 A, 同时存在 A和 B, 单独存在 B这三种情况。 另外, 本文中字符 " , —般表示前后关联对象是 一种 "或" 的关系。
应理解, 本文中术语 "和 /或", 仅仅是一种描述关联对象的关联关系, 表示可以存在三种关系, 例如, A和 /或 B, 可以表示: 单独存在 A, 同时存 在 A和 B, 单独存在 B这三种情况。 另外, 本文中字符 " , —般表示前后 关联对象是一种 "或" 的关系。
应理解, 在本发明的各种实施例中, 上述各过程的序号的大小并不意味 着执行顺序的先后, 各过程的执行顺序应以其功能和内在逻辑确定, 而不应 对本发明实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各 示例的单元及算法步骤, 能够以电子硬件、 或者计算机软件和电子硬件的结 合来实现。 这些功能究竟以硬件还是软件方式来执行, 取决于技术方案的特 定应用和设计约束条件。 专业技术人员可以对每个特定的应用来使用不同方 法来实现所描述的功能, 但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到, 为描述的方便和筒洁, 上述描 述的系统、 装置和单元的具体工作过程, 可以参考前述方法实施例中的对应 过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统、 装置和 方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示 意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可 以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成到另一个 系统, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之间 的耦合或直接耦合或通信连接可以是通过一些接口, 装置或单元的间接耦合 或通信连接, 可以是电性, 机械或其它的形式。 为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的部分或 者全部单元来实现本实施例方案的目的。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在一 个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使 用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明 的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部 分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质 中, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 述的存储介质包括: U盘、移动硬盘、只读存储器( ROM, Read-Only Memory )、 随机存取存储器(RAM, Random Access Memory ), 磁碟或者光盘等各种可 以存储程序代码的介质。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限 于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应以所述权利要求的保护范围为准。

Claims

权利要求
1、 一种确定 GRE隧道的方法, 其特征在于, 包括:
第一网关设备接收接入站点发送的动态主机配置协议 DHCP请求报文, 所述 DHCP请求报文用于请求为接入到所述接入站点的终端分配网际协议 IP地址;
当确定所述第一网关设备的负载超过预设阈值时,确定与所述第一网关 设备的 IP地址不同的网关 IP地址;
向所述接入站点发送 DHCP应答报文, 所述 DHCP应答报文包括所述 网关 IP地址和为所述终端分配的终端 IP地址, 以便于所述接入站点艮据所
2、 根据权利要求 1所述的方法, 其特征在于, 所述确定与所述第一网 关设备的 IP地址不同的网关 IP地址, 包括:
将第二网关设备的 IP地址确定为所述网关 IP地址。
3、 根据权利要求 1所述的方法, 其特征在于, 所述第一网关设备包括 网关控制面部件和网关数据面部件, 所述第一网关设备的 IP地址为所述网 关控制面部件的 IP地址,与所述第一网关设备的 IP地址不同的网关 IP地址 为所述网关数据面部件的 IP地址。
4、 一种确定 GRE隧道的方法, 其特征在于, 包括:
向第一网关设备发送动态主机配置协议 DHCP请求 文, 所述 DHCP 请求报文用于请求为接入到所述接入站点的终端分配 IP地址;
接收所述第一网关设备发送的 DHCP应答报文, 所述 DHCP应答报文 包括网关 IP地址和为所述终端分配的终端 IP地址,所述网关 IP地址与所述 第一网关设备的 IP地址不同;
根据所述 DHCP应答报文中的所述网关 IP地址, 确定所述终端的通用 路由封装 GRE隧道。
5、 根据权利要求 4所述的方法, 其特征在于, 在所述接收所述第一网 关设备发送的 DHCP应答报文之前, 所述方法还包括:
将所述第一网关设备的 IP地址确定为所述终端的 GRE隧道第一端点 IP 地址;
将所述接入站点的 IP地址确定为所述终端的 GRE隧道第二端点 IP地 址; 所述确定所述终端的通用路由封装 GRE隧道, 包括:
根据所述 DHCP应答报文, 重新确定所述终端的所述 GRE隧道第一端 点 IP地址,所述重新确定的 GRE隧道第一端点 IP地址为所述网关 IP地址; 根据所述重新确定的 GRE隧道第一端点 IP地址和所述 GRE隧道第二 端点 IP地址, 确定所述终端的所述 GRE隧道。
6、 根据权利要求 4或 5所述的方法, 其特征在于, 所述方法还包括: 终端接入所述接入站点时, 根据所述网关 IP地址确定所述终端的所述 GRE 隧道。
7、 根据权利要求 4至 6中任一项所述的方法, 其特征在于, 所述网关
IP地址为与第二网关设备的 IP地址。
8、 根据权利要求 4至 7中任一项所述的方法, 其特征在于, 所述第一 网关设备包括网关控制面部件和网关数据面部件, 所述第一网关设备的 IP 地址为所述网关控制面部件的 IP地址, 所述网关 IP地址为所述网关数据面 部件的 IP地址。
9、 一种网关设备, 其特征在于, 包括:
接收模块, 用于接收接入站点发送的动态主机配置协议 DHCP请求报 文,所述 DHCP请求报文用于请求为接入到所述接入站点的终端分配网际协 议 IP地址;
确定模块, 用于当确定所述网关设备的负载超过预设阈值时, 确定与所 述网关设备的 IP地址不同的网关 IP地址;
发送模块, 用于向所述接入站点发送 DHCP应答报文, 所述 DHCP应 答 4艮文包括所述网关 IP地址和为所述终端分配的终端 IP地址, 以便于所述
10、 根据权利要求 9所述的网关设备, 其特征在于, 所述确定模块具体 用于, 将第二网关设备的 IP地址确定为所述网关 IP地址。
11、 根据权利要求 9所述的网关设备, 其特征在于, 所述第一网关设备 包括网关控制面部件和网关数据面部件, 所述第一网关设备的 IP地址为所 述网关控制面部件的 IP地址, 与所述第一网关设备的 IP地址不同的网关 IP 地址为所述网关数据面部件的 IP地址。
12、 一种接入站点, 其特征在于, 包括: 发送模块, 用于向第一网关设备发送动态主机配置协议 DHCP请求报 文, 所述 DHCP请求 文用于请求为接入到所述接入站点的终端分配 IP地 址;
接收模块, 用于接收所述第一网关设备发送的 DHCP应答报文, 所述 DHCP应答 4艮文包括网关 IP地址和为所述终端分配的终端 IP地址, 所述网 关 IP地址与所述第一网关设备的 IP地址不同;
确定模块, 用于根据所述 DHCP应答报文中的所述网关 IP地址, 确定 所述终端的通用路由封装 GRE隧道。
13、 根据权利要求 12所述的接入站点, 其特征在于, 所述确定模块还 用于, 在接收模块接收到所述第一网关设备发送的 DHCP应答报文之前, 将 所述第一网关设备的 IP地址确定为所述终端的 GRE隧道第一端点 IP地址; 所述确定模块还用于 ,将所述接入站点的 IP地址确定为所述终端的 GRE 隧道第二端点 IP地址;
所述确定模块具体还用于: 根据所述 DHCP应答报文, 重新确定所述终 端的所述 GRE隧道第一端点 IP地址, 所述重新确定的 GRE隧道第一端点
IP地址为所述网关 IP地址;
所述确定模块具体还用于: 根据所述重新确定的 GRE隧道第一端点 IP 地址和所述 GRE隧道第二端点 IP地址, 确定所述终端的所述 GRE隧道。
14、 根据权利要求 12或 13所述的接入站点, 其特征在于, 所述接入站 点还包括: 以便于下次所述终端接入所述接入站点时, 根据所述网关 IP地址确定所述 终端的所述 GRE隧道。
15、 根据权利要求 12至 14中任一项所述的方法, 其特征在于, 所述确 定模块确定的所述网关 IP地址为与第二网关设备的 IP地址。
16、 根据权利要求 12至 15中任一项所述的方法, 其特征在于, 所述第 一网关设备包括网关控制面部件和网关数据面部件,所述第一网关设备的 IP 地址为所述网关控制面部件的 IP地址, 所述确定模块确定的所述网关 IP地 址为所述网关数据面部件的 IP地址。
PCT/CN2013/090982 2013-12-30 2013-12-30 确定gre隧道的方法、网关设备和接入站点 WO2015100570A1 (zh)

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