WO2015100593A1 - 一种报文传输方法、设备及通信系统 - Google Patents

一种报文传输方法、设备及通信系统 Download PDF

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Publication number
WO2015100593A1
WO2015100593A1 PCT/CN2013/091054 CN2013091054W WO2015100593A1 WO 2015100593 A1 WO2015100593 A1 WO 2015100593A1 CN 2013091054 W CN2013091054 W CN 2013091054W WO 2015100593 A1 WO2015100593 A1 WO 2015100593A1
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WO
WIPO (PCT)
Prior art keywords
mac address
plane device
forwarding
gateway control
control plane
Prior art date
Application number
PCT/CN2013/091054
Other languages
English (en)
French (fr)
Inventor
周伟
王岩
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 EP19174314.5A priority Critical patent/EP3598703A1/en
Priority to EP13900756.1A priority patent/EP3082305B1/en
Priority to CN201380002383.XA priority patent/CN104995878B/zh
Priority to PCT/CN2013/091054 priority patent/WO2015100593A1/zh
Priority to RU2016131429A priority patent/RU2652440C2/ru
Priority to CN201910055284.7A priority patent/CN109729188A/zh
Publication of WO2015100593A1 publication Critical patent/WO2015100593A1/zh
Priority to US15/198,207 priority patent/US10187846B2/en
Priority to US16/230,147 priority patent/US10681619B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/09Mapping addresses
    • H04L61/10Mapping addresses of different types
    • H04L61/103Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/04Arrangements for maintaining operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2101/00Indexing scheme associated with group H04L61/00
    • H04L2101/60Types of network addresses
    • H04L2101/618Details of network addresses
    • H04L2101/622Layer-2 addresses, e.g. medium access control [MAC] addresses
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/59Network arrangements, protocols or services for addressing or naming using proxies for addressing

Definitions

  • the present invention relates to the field of communications, and in particular, to a message transmission method, device, and communication system. Background technique
  • OpenFlow technology is an open interface and exchange standard that supports multiple controls.
  • TCP/IP Transmission Control Protocol/Internet Protocol
  • OpenFlow technology converts the packet forwarding process that was originally controlled by the traditional switch/router into The independent process of the OpenFlow switch (hereinafter referred to as the switch) and the OpenFlow controller (hereinafter referred to as the controller) that support OpenFlow technology respectively realizes the separation of the forwarding plane and the control plane.
  • the embodiments of the present invention provide a message transmission method, device, and communication system, which can improve the success rate of the access network to the mobile core network in the environment of the mobile core network where the forwarding plane and the control plane are separated.
  • a communication system including: a forwarding plane device and a serving gateway control plane device located in a core network;
  • the forwarding plane device is configured to receive a MAC address request broadcast by the base station, and forward the The MAC address request includes: a target IP address, configured to request a MAC address corresponding to the target IP address, and the forwarding plane device does not save the target IP address and the MAC address a correspondence relationship;
  • the serving gateway control plane device is configured to receive the MAC address request forwarded by the forwarding plane device, obtain the MAC address according to the first correspondence and the target IP address, and send a MAC address request response;
  • the MAC address request response includes the MAC address;
  • the forwarding plane device is further configured to receive the MAC address request response, and forward the MAC address request response to the base station.
  • the serving gateway control plane device stores the first correspondence relationship; or the serving gateway control plane device is further configured to acquire the first correspondence relationship from the configuration database.
  • the serving gateway control plane device is further configured to send a first forwarding indication to the forwarding plane device, where the first forwarding indication is used to instruct the forwarding plane device to forward the MAC address request response to the base station;
  • the forwarding plane device is specifically configured to send the MAC address request response to the base station according to the first forwarding indication.
  • system further includes another forwarding Surface device
  • the serving gateway control plane device is further configured to send a second forwarding indication to the other forwarding plane device, where the second forwarding indication is used to indicate that the other forwarding plane device discards the destination MAC address as the MAC address. Data message.
  • the system further includes a network management device ;
  • the forwarding plane device is specifically configured to forward the MAC address request to the network management device;
  • the network management device is configured to receive a MAC address request forwarded by the forwarding plane device, and send the MAC address request to the serving gateway control plane device.
  • system further includes another control plane device;
  • the network management device is specifically configured to broadcast the MAC address request to the serving gateway control plane device and the other control plane device.
  • the network management device is specifically configured to send the MAC address request to the serving gateway control plane device according to the second corresponding relationship between the target IP address and the serving gateway control plane and the target IP address.
  • the network management device saves the second correspondence; or
  • the network management device is configured to obtain the second correspondence from a configuration database.
  • the network management apparatus is further used to: Receiving, by the serving gateway control plane device, the MAC address request response, and transmitting the MAC address request response to the forwarding plane device.
  • a forwarding plane device including:
  • the first receiving unit is configured to receive a MAC address request that is broadcast by the base station, where the MAC address request includes a target IP address, and is used to request a MAC address corresponding to the target IP address;
  • the first forwarding unit is configured to: when the forwarding plane device does not save the first correspondence between the target IP address and the MAC address, forward the MAC address request to a serving gateway control plane device to enable the service
  • the gateway control plane device is based on the first Corresponding relationship and the target IP address acquiring the MAC address, sending a MAC address request response to the forwarding plane device; wherein the MAC address request response includes the MAC address;
  • the second receiving unit is configured to receive the MAC address request response
  • the second forwarding unit is configured to forward the MAC address request response to the base station.
  • the third receiving unit is configured to receive the first forwarding indication sent by the serving gateway control plane device, where the first forwarding indication is used to instruct the forwarding plane device to forward the MAC address request response to the base station;
  • the second forwarding unit is specifically configured to: send the MAC address request response to the base station according to the first forwarding indication.
  • the first forwarding unit is specifically configured to: forward the MAC address request to the network management device, so that the network management device forwards the MAC address request to the serving gateway control plane device.
  • the second receiving unit is specifically configured to: receive, by the serving gateway control plane device, the MAC address request response forwarded by the network management device.
  • a service gateway control plane device including:
  • the receiving unit is configured to receive a MAC address request, where the MAC address request includes a target IP address, and is used to request a MAC address corresponding to the target IP address;
  • the MAC address obtaining unit is configured to acquire the MAC address according to the first correspondence between the target IP address and the MAC address and the target IP address;
  • the first sending unit is configured to send a MAC address request response to the forwarding plane device, so that the forwarding plane device forwards the MAC address request response to the base station; wherein the MAC address request response includes the MAC address.
  • the first correspondence is saved on the serving gateway control plane device; or the first correspondence is obtained by the serving gateway control plane device from a configuration database.
  • the serving gateway control plane device further includes: a second sending unit, configured to send And forwarding the indication to the forwarding plane device; wherein the first forwarding indication is used to instruct the forwarding plane device to forward the MAC address request response to the base station.
  • the serving gateway control plane device further includes: a third sending unit, configured to send The second forwarding indication is sent to the other forwarding plane device.
  • the second forwarding indication is used to instruct the other forwarding plane device to discard the data whose destination MAC address is the MAC address.
  • the receiving unit is specifically configured to: Receiving, by the forwarding plane device, the MAC address request forwarded by the network management device.
  • a fifth possible implementation manner of the third aspect And: forwarding, by the network management device, the MAC address request response to the forwarding plane device, so that the forwarding plane device forwards the MAC address request response to the base station.
  • the fourth aspect provides a packet transmission method, including:
  • the forwarding plane device receives the MAC address request broadcasted by the base station; wherein the MAC address request includes a target IP address, and is used to request a MAC address corresponding to the target IP address;
  • the forwarding plane device When the forwarding plane device does not save the first correspondence between the target IP address and the MAC address, the forwarding plane device forwards the MAC address request to the service a gateway control plane device, configured to: the serving gateway control plane device acquires the MAC address according to the first correspondence relationship and the target IP address, and sends a MAC address request response to the forwarding plane device; wherein the MAC address The request response includes the MAC address;
  • the forwarding plane device receives the MAC address request response
  • the forwarding plane device forwards the MAC address request response to the base station.
  • the method further includes: the forwarding plane device receiving a first forwarding indication sent by the serving gateway control plane device; wherein the first forwarding indication is used to instruct the forwarding plane device to forward the MAC address request response to the Base station
  • the forwarding plane device forwarding the MAC address request response to the base station specifically includes: the forwarding plane device sending the MAC address request response to the base station according to the first forwarding indication.
  • the forwarding plane device forwards the MAC address request to the network management device to cause the network management device to forward the MAC address request to the serving gateway control plane device.
  • the forwarding plane device receiving The MAC address request response is specifically used to:
  • the forwarding plane device receives the MAC address request response forwarded by the serving gateway control plane device by the network management device.
  • the fifth aspect provides a packet transmission method, including:
  • the serving gateway control plane device receives the MAC address request; wherein the MAC address request includes a target IP address, and is used to request a MAC address corresponding to the target IP address;
  • the serving gateway control plane device obtaining the MAC address by the first correspondence of the address and the target IP address;
  • the serving gateway control plane device sends a MAC address request response to the forwarding plane device such that the forwarding plane device forwards the MAC address request response to the base station; wherein the MAC address request response includes the MAC address.
  • the first correspondence is saved on the serving gateway control plane device; or the first correspondence is obtained by the serving gateway control plane device from a configuration database.
  • the method further includes:
  • the serving gateway control plane device sends a first forwarding indication to the forwarding plane device; wherein the first forwarding indication is used to instruct the forwarding plane device to forward the MAC address request response to the base station.
  • the method further includes:
  • the serving gateway control plane device sends a second forwarding indication to the other forwarding plane device, where the second forwarding indication is used to instruct the other forwarding plane device to discard the data whose destination MAC address is the MAC address. .
  • the serving gateway control plane device receives The MAC address request sent by the forwarding plane device specifically includes:
  • the serving gateway control plane device receives the MAC address request forwarded by the forwarding plane device through the network management device.
  • the serving gateway control plane device sends The MAC address request is responsive to the forwarding plane device, so that the forwarding plane device forwards the MAC address request response to the base station specifically includes: The serving gateway control plane device forwards the MAC address request response to the forwarding plane device by the network management device, so that the forwarding plane device forwards the MAC address request response to the base station.
  • a forwarding plane device including:
  • a communication unit configured to communicate with an external network element
  • a MAC address request that is broadcast by the base station; where the MAC address request includes a target IP address, and is used to request a MAC address corresponding to the target IP address;
  • the forwarding plane device When the forwarding plane device does not save the first correspondence between the target IP address and the MAC address, forward the MAC address request to the serving gateway control plane device by using the communication unit, so that the serving gateway The control plane device acquires the MAC address according to the first correspondence relationship and the target IP address, and sends a MAC address request response to the forwarding plane device by using the communication unit; wherein the MAC address request response includes the MAC address Address
  • the processor is further configured to receive, by the communication unit, a first forwarding indication sent by the serving gateway control plane device, where the first forwarding indication is used to instruct the forwarding plane device to forward the MAC address request response to The base station;
  • the processor forwards the MAC address request response to the base station by using the communication unit, where the base station is specifically configured to: send, according to the first forwarding indication, the MAC address request response to the base station by using the communication unit.
  • Receiving, by the communication unit, the MAC address request response by the processor is configured to: receive, by the communication unit, the MAC address request response that is forwarded by the serving gateway control plane device by using the network management device.
  • the seventh aspect provides a service gateway control plane device, including:
  • the communication unit is configured to communicate with an external network element
  • a MAC address request sent by the forwarding plane device where the MAC address request includes a target IP address, and is used to request a MAC address corresponding to the target IP address;
  • the first correspondence is saved on the serving gateway control plane device; or the first correspondence is obtained by the serving gateway control plane device from a configuration database.
  • the processor is further configured to send, by the communications unit, a first forwarding indication to the forwarding plane device, where the first forwarding indication is used to instruct the forwarding plane device to forward the MAC address request response to the base station .
  • the processor is further configured to send the second forwarding indication to the other forwarding plane device by using the communications unit, where the second forwarding indication is used to indicate that the other forwarding plane device discards the destination MAC address as the MAC address.
  • the unit receiving the MAC address request sent by the forwarding plane device is specifically configured to: receive, by the communication unit, the MAC address request that is forwarded by the forwarding plane device by using the network management device.
  • a fifth possible implementation manner of the seventh aspect Sending, by the unit, a MAC address request response to the forwarding plane device, so that the forwarding plane device forwards the MAC address request response to the base station by using the communication unit, where the base station is specifically configured to: use the network management device to use the MAC address
  • the request response is forwarded by the communication unit to the forwarding plane device such that the forwarding plane device forwards the MAC address request response to the base station.
  • the forwarding plane device forwards the MAC address request broadcast by the base station to the serving gateway control plane device, so that the serving gateway control plane device according to the purpose in the MAC address request
  • the IP address is associated with the first one to obtain the MAC address corresponding to the target IP address, and the MAC address is sent to the base station, so that the base station can successfully obtain the MAC address of the next-hop mobile core network node, so that the base station can be obtained. Transmitting the data to the mobile core network node, avoiding the packet transmission failure caused by the base station not being able to know the MAC address of the next hop mobile core network node, and improving the success of the access network transmitting the data packet to the mobile core network. rate.
  • FIG. 1 is a schematic structural diagram of a forwarding plane entity and a control plane entity after a forwarding plane and a control plane are separated according to an embodiment of the present invention
  • FIG. 2 is a schematic flow chart of a message transmission method according to an embodiment of the present invention.
  • FIG. 3 is a schematic flow chart of another packet transmission method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of still another method for transmitting a message according to an embodiment of the present invention.
  • FIG. 5 is a schematic flow chart of still another method for transmitting a message according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a device of a forwarding plane device according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of another device for a forwarding plane device according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an apparatus for serving a gateway control plane device according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a device of a forwarding plane device according to another embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an apparatus for serving a gateway control plane device according to another embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a system of a communication system according to an embodiment of the present invention
  • FIG. 12 is a schematic diagram of another system of a communication system according to an embodiment of the present invention
  • FIG. 14 is a schematic diagram of a system of another communication system according to an embodiment of the present invention
  • FIG. 15 is a schematic diagram of another system of a communication system according to an embodiment of the present invention
  • Another embodiment of the system provides a schematic diagram of a system of communication systems.
  • an OpenFlow switch In the existing OpenFlow architecture, including OpenFlow switches and external controllers, an OpenFlow switch consists of a Flow Table, a Secure Channel, and an OpenFlow Protocol (OF Protocol). Usually, the core information is stored in the flow table to implement functions such as searching, forwarding, statistics, and filtering.
  • the switch is connected to an external controller (Controller) through a secure channel (Open Channel), and the controller queries the flow table. management.
  • the OpenFlow switch is the core component of the entire OpenFlow network and manages the forwarding of the data layer. After receiving the input data packet, the OpenFlow switch first searches for the flow table installed on the switch. If there is no match, the data packet is forwarded to the controller, which is determined by the controller.
  • the forwarding plane is used to implement packet forwarding.
  • the control plane is used to implement packet forwarding control.
  • the function of the forwarding plane can be implemented by the forwarding plane device, and the function of the control plane can be implemented by the control device service gateway control plane device.
  • the forwarding plane device in the embodiment of the present invention may also be referred to as a switching device, a switch, etc., and may be implemented by using an OpenFlow switch.
  • the control device serving the gateway control plane device in the embodiment of the present invention may also be called To control applications, controllers, control devices, etc., you can implement them with OpenFlow controllers.
  • FIG. 1 is an example of an architecture of a mobile core network in which a forwarding plane is separated from a control plane.
  • the forwarding plane only processes the packet corresponding to the flow entry sent by the control plane, and does not process other packets.
  • the foregoing forwarding plane device can be implemented by a switch supporting OpenFlow, such as OpenFlow exchange supported by each vendor.
  • the control plane device of the forwarding plane can be a control application that controls the forwarding plane, that is, various applications that implement the control plane function, such as the application of the control plane of the SGW, and the control plane of the PGW. Applications, routing control surfaces, etc.
  • the above control application runs on the network management device.
  • the network management device may be a system with a controller architecture, and a network operating system is deployed on the network management device, wherein the controller architecture includes a current controller structure such as NOX, POX, and Floodlight; and the switching device needs to send a message to the corresponding control.
  • the packet is sent to the network operating system, and then forwarded by the network operating system to the corresponding control application.
  • the forwarding plane device of the mobile core network in FIG. 1 is connected to the network device of the access network, and the network device may be different devices according to different network standards, for example, may be a base station or a base station controller.
  • the forwarding plane device of the mobile core network in FIG. 1 is also connected to an external network gateway in the external network, which may be an enterprise network or an Internet.
  • the control application of the forwarding plane may be implemented by hardware, and may also be referred to as a control device, for example, implemented by a controller of OpenFlow, and each controller of the OpenFlow may be integrated, for example, by SGW. Control functions such as PGW can also be integrated with multiple forwarding planes by an OpenFlow controller.
  • the network management device is optional, and each control device can be connected to a corresponding forwarding plane device. It can be understood that the network management device can also be set up in the mobile core network.
  • the network management device can be implemented by hardware and can be referred to as a network management device.
  • the switching device and the control device are interconnected by the network management device. When the switching device needs to send a packet to the control device, it first sends a packet to the network management device, and the network management device sends the packet to the corresponding control device.
  • the mobile core network in which the control plane is separated from the forwarding plane is not limited to the above two examples, and there may be other architectures, which are not limited in the embodiment of the present invention.
  • the switching device supporting the OpenFlow protocol is received. After there is no packet that can be matched by the flow entry, the packet is carried in the Packet_in message and sent to the serving gateway control plane device.
  • the forwarding plane device receives the ARP 4 message sent by the base station, and the ARP is guaranteed for five years because there is no matching flow entry. Send to the control panel device.
  • the existing control plane device generally instructs the switch to flood (FLOOD) the packet.
  • the data packets that need to be transmitted are usually encapsulated in the GTP (GPRS tunnel protocol), and the GTP packet includes the ARP (Address Resolution Protocol) request. 4.
  • the forwarding device does not have a flow entry that matches the GTP text.
  • the GTP packet is flooded, resulting in a large number of GTP 4 messages inside the network.
  • the gateway cannot process the ARP request packet because it does not support the GTP protocol. Therefore, the gateway cannot process the ARP request packet. Once the ARP packet cannot be processed correctly, the communication will fail. Based on the above, the present invention provides a new message transmission method, device and device.
  • an embodiment of the present invention provides a packet transmission method, which can be implemented by a forwarding plane device. Specifically, this embodiment is mainly directed to a data packet from a mobile access network to a control plane and forwarding.
  • the process of transmitting a mobile core network for example, a mobile core network using OpenFlow technology
  • the message transmission method specifically includes the following steps:
  • the forwarding plane device receives a MAC address request broadcast by the base station.
  • the forwarding plane device in the present invention may be an OpenFlow-enabled switch.
  • the above service gateway control plane device may be implemented by a hardware entity or by software, and a plurality of service gateway control plane devices may be disposed on one hardware entity.
  • the above MAC address request includes a target IP address for requesting a MAC address corresponding to the target IP address.
  • the base station broadcasts to the forwarding plane device after receiving the data packet sent by the UE.
  • the base station needs to obtain the MAC address of the destination switching device, but the base station receives the UE to send the data packet to the switching device.
  • the destination IP address of the packet is the IP address of the server, and the destination MAC address is the MAC address of the base station. Therefore, after receiving the data packet, the base station first changes the MAC address of the data packet. The MAC address of the next hop (forward plane device).
  • the data packet can be sent to the destination forwarding plane device; when the base station does not have the MAC address of the destination forwarding plane device, the MAC address request message is broadcasted (for example, : ARP request message), when the base station sends a data packet to the mobile core network, the data packet is encapsulated in the GTP packet for transmission. Therefore, the base station encapsulates the MAC address request in the GTP packet for broadcast.
  • the forwarding device can report the GTP packet to the service in the embodiment of the present invention because there is no flow entry matching the GTP packet on the forwarding device. Gateway control plane device.
  • the forwarding plane device When the forwarding plane device does not save the first correspondence between the target IP address and the MAC address, the forwarding plane device forwards the MAC address request to the serving gateway control plane device, so that the serving gateway control plane device is configured according to the first correspondence and the target.
  • the IP address acquires the MAC address, and the MAC address request response is sent to the forwarding plane device.
  • the foregoing first correspondence may be pre-configured on the serving gateway control plane device, or may be obtained from the configuration database by the serving gateway control plane device.
  • the first correspondence may be a mapping relationship between a server IP address and an IP address of a gateway of the forwarding plane device, which is not limited in the present invention.
  • the foregoing MAC address request response is encapsulated in a data message.
  • the forwarding plane device after the forwarding plane device receives the GTP packet, the forwarding plane device will configure the forwarding rule (for example, a flow entry) for processing the MAC address request on the forwarding plane device.
  • the MAC address request is reported to the serving gateway control plane device in the embodiment of the present invention (eg, through a Packet-IN message).
  • the forwarding plane device receives the MAC address request response.
  • the MAC address request response includes the MAC address of the destination forwarding device.
  • the forwarding plane device forwards the MAC address request response to the base station.
  • the forwarding plane device receives the first indication according to the serving gateway control plane device
  • the message sends a MAC address request response to the base station.
  • the first indication message is used to indicate that the forwarding plane device sends a MAC address request response to the base station, and the first indication message may be a forwarding flow entry.
  • the serving gateway control plane device may send a first indication message to the target forwarding plane device, and the first indication message is used to instruct the forwarding plane device to send the MAC address request response to the destination forwarding device.
  • the base station, and the first indication message may be a forwarding flow entry.
  • the serving gateway control plane device may send a second indication message to the other forwarding plane device, where the other forwarding plane device discards the data packet whose destination MAC address is the destination forwarding plane device, the data.
  • the message encapsulates a MAC address request response.
  • the foregoing second indication message may also be a forwarding flow entry.
  • the foregoing forwarding flow entry is an implementation manner of a forwarding rule, and includes a matching i or a match field, a counter, and an instruction set. Different vendors can design according to their respective requirements. Forwarding flow entries with different functions. Specifically, the matching field of the forwarding flow entry includes an input interface, a packet header, and metadata (metadata) determined by the previous flow table.
  • the OpenFlow 1.2 specification defines 36 fields for header field matching from the data link layer to the transport layer five-layer packet header.
  • Each header field has three attribute requirements: length, mask, and premise;
  • the counter statistics traffic information such as the active entry, the number of times of the lookup, the number of times the packet is sent, etc., can be maintained for each forwarding flow entry, each flow, each port, and each queue;
  • the instruction set of the flow table is divided into Required Actions and Optional Actions.
  • Three mandatory actions are: Forwarding the stream to a given port; Encapsulating and forwarding the message of this stream to the controller, the controller determines whether it is streaming Add a stream to the table; discard this message.
  • a network management device may be installed between the forwarding plane device and the serving gateway control plane device.
  • the network management device may be a software implementation, or may be a hardware entity, and may be integrated with a serving gateway control plane device on a device.
  • the forwarding plane device can report the MAC address Information such as the address request is uniformly transmitted to the network management device, and is forwarded by the network management device to the corresponding service gateway control plane device; the information transmitted by the serving gateway control plane device to the forwarding plane device can also be forwarded by the network management device.
  • the serving gateway control plane device receives the MAC on the forwarding plane device from the network management device.
  • the address request is obtained, and the MAC address is obtained according to the first correspondence and the target IP address, and the MAC address request response is sent to the forwarding plane device by the network management device.
  • the network management device may be implemented by software or by hardware.
  • the network management device can be a network operating system on which several control device applications are running.
  • the network management device parses the GTP message and obtains the MAC address request therein.
  • the network management device can send the MAC address request to the corresponding serving gateway control plane device.
  • the network management device can send a MAC address request to the corresponding service gateway control device in the following two ways:
  • the network management device determines the corresponding serving gateway control plane device according to the requested IP address of the MAC address request, and sends the MAC address request to the corresponding serving gateway control plane device.
  • a second correspondence between the destination IP address of the forwarding plane device and the serving gateway control plane is set on the network management device, wherein the serving gateway control plane device is configured to control the forwarding plane device.
  • the network management device obtains the requested destination IP address from the MAC address request, and finds a corresponding serving gateway control plane device according to the second correspondence, and sends the MAC address request to the corresponding serving gateway control plane device.
  • the foregoing second correspondence may be saved in the network management device, or may be obtained by the network management device from the configuration database.
  • the network management device replaces the source MAC address of the MAC address request with its own MAC address, and broadcasts the modified MAC address request message to the serving gateway control plane device.
  • the network management device replaces the source MAC address of the MAC address request
  • the MAC address for itself is for the service gateway control plane device to be able to return the corresponding MAC address to the network management device.
  • the forwarding plane device sends the MAC address request to the corresponding serving gateway control plane device, so that the serving gateway control plane device returns the MAC address corresponding to the destination forwarding plane device, and passes the The destination forwarding device sends the MAC address to the base station, so that the base station can successfully obtain the MAC address of the next hop mobile core network node, so that the base station can send the data packet to the mobile core network node, so as to avoid the base station being unable to learn.
  • the packet transmission failure caused by the MAC address of the mobile core network node is hopped, and the success rate of the data transmission message transmitted by the access network to the mobile core network is improved.
  • the packet transmission method provided in the embodiment shown in FIG. 2 can implement the process of successfully transmitting data packets from the mobile access network to the mobile core network (OpenFlow network), and overcomes the problem in the prior art that the base station is not configured.
  • the success rate of transmitting packets to the mobile core network can implement the process of successfully transmitting data packets from the mobile access network to the mobile core network (OpenFlow network), and overcomes the problem in the prior art that the base station is not configured.
  • the problem that the data packet of the new network node is skipped and the data message cannot be sent to the gateway of the forwarding plane device of the mobile core network, thereby improving the implementation of the slave base station in the environment of the mobile core network separated from the forwarding plane and the control plane
  • the embodiment of the present invention further provides a message transmission method, as shown in FIG. 3, which can be implemented by a serving gateway control plane device.
  • the embodiment mainly focuses on data packet transmission from a mobile access network to a dedicated control.
  • the serving gateway control plane device receives the MAC address request sent by the forwarding plane device.
  • the foregoing service gateway control plane device may be a hardware entity or a software entity.
  • the serving gateway control plane device herein may be a device that implements a control plane function of an SGW or a PGW, and multiple service gateway controls.
  • the face device can be placed on a hardware entity.
  • it can be implemented by the OpenFlow controller.
  • the above forwarding plane device can be a switch supporting OpenFlow.
  • the MAC address request includes the target IP address of the data, and is specifically used to request the MAC address corresponding to the target IP address.
  • the foregoing MAC address request message may be an ARP request message, and the ARP request message may be sent by using an OpenFlow protocol, for example, encapsulated in a Packet-Out message, or directly sent.
  • the serving gateway control plane device obtains the MAC address according to the first correspondence between the target IP address and the MAC address and the target IP address.
  • the serving gateway control plane device can parse the destination IP address in the MAC address request in the data packet, and obtain the corresponding IP address according to the destination IP address.
  • the first correspondence and then determining the IP address of the gateway of the forwarding plane device corresponding to the destination IP address according to the first correspondence and the destination IP address of the MAC address request.
  • the first corresponding relationship may be pre-configured on the serving gateway control plane device, or may be obtained from the configuration database by the serving gateway control plane device.
  • the first correspondence may be a mapping relationship between a server IP address and an IP address of a gateway of the forwarding plane device, which is not limited by the present invention.
  • the serving gateway control plane device sends a MAC address request response to the forwarding plane device, so that the forwarding plane device forwards the MAC address request response to the base station.
  • the MAC address request response described above includes a MAC address.
  • the serving gateway control plane device sends a first forwarding indication to the forwarding plane device, so that the forwarding plane device receives the first forwarding indication forwarding plane device to forward the MAC address request response to the base station.
  • the first forwarding indication may be used to forward the flow entry.
  • a network management device may be installed between the forwarding plane device and the serving gateway control plane device.
  • the network management device may be a software implementation, or may be a hardware entity, and may be integrated with a serving gateway control plane device on a device.
  • the forwarding plane device can uniformly send the reported MAC address request and other information to the network management device, and the network management device forwards the device to the corresponding service gateway control plane device; the service gateway control plane device sends The information to the forwarding plane device can also be forwarded by the network management device.
  • the service gateway control plane device The receiving forwarding plane device forwards the MAC address request by the network management device, or the serving gateway control plane device forwards the MAC address request response to the forwarding plane device through the network management device.
  • the network management apparatus may further determine a MAC address request according to the second correspondence between the target IP address and the serving gateway control plane and the target IP address, and send the MAC address request to the serving gateway control plane device, where the foregoing
  • the two correspondences may be stored in the network management device, or may be obtained by the network management device from the configuration database.
  • the service gateway control plane device obtains the MAC address request, and obtains the MAC address corresponding to the destination forwarding plane device according to the destination IP address in the MAC address request and the first correspondence relationship, and Transmitting the MAC address to the base station by using the forwarding plane device, so that the base station can successfully obtain the MAC address of the next hop mobile core network node, so that the base station can send the data packet to the mobile core network node, so as to avoid that the base station cannot know the base station.
  • the packet transmission failure caused by the MAC address of the next hop mobile network node increases the success rate of the access network to transmit data packets to the mobile core network.
  • the message transmission method provided by the embodiment of the present invention is introduced from multiple sides in a specific scenario.
  • the description of the technical terms, concepts, and the like related to the above embodiments in the following embodiments can be referred to the above embodiments.
  • the following embodiments are mainly directed to a process of transmitting data messages from a base station to a mobile core network, and a process of transmitting data messages from a mobile core network to an external network.
  • the specific implementation of the message transmission method provided by the embodiment of the present invention may also be different according to different network architectures.
  • a forwarding plane device and a serving gateway control plane device are included, and in the second network architecture, a network management device may be disposed between the forwarding plane device and the serving gateway control plane device, where In the second network architecture, the serving gateway control plane device may be a physical device or a control device application running on the network management device to perform a control device function.
  • the network management device may be set up in the network.
  • the base station is an evolved base station eNodeB.
  • the eNodeB receives the uplink data of the UE.
  • the destination IP address of the uplink data packet is the IP address of the server, and the destination MAC address is the MAC address of the eNodeB.
  • the eNodeB After receiving the uplink data packet, the eNodeB needs to replace the MAC address of the uplink data packet with the MAC address of the next hop.
  • the eNodeB broadcasts an ARP message to obtain the MAC address of the SGW.
  • the ARP message carries the SGW IP address, which can be called the destination IP address.
  • the eNodeB broadcasts an ARP request message.
  • the IP address requested by the ARP request message broadcast by the eNodeB is the IP address of the gateway of the mobile core network, and it is desirable to obtain the MAC address corresponding to the IP address.
  • the eNodeB since the eNodeB is connected to multiple forwarding plane devices, the eNodeB broadcasts the ARP message to the forwarding plane device 1 and the forwarding plane device 2, wherein the source IP address of the ARP request message is the IP address of the eNodeB, and the source MAC address is the MAC address of the eNodeB.
  • the target IP is the IP address of the next megabyte (SGW), and the destination MAC address is all F (all F is the protocol).
  • the forwarding plane device After receiving the ARP request message broadcast by the eNodeB, the forwarding plane device sends the ARP request message to the network management device.
  • the OpenFlow protocol is used between the serving gateway control plane device and the forwarding plane device of the mobile core network, after the forwarding plane device receives the ARP request message broadcast by the eNodeB, the ARP request message is not configured.
  • the forwarded flow entry of the message encapsulates the ARP request message in a packet_in message, and sends the packet_in message to the network management device to forward the network management device to the corresponding service gateway control plane device.
  • the network management device forwards the ARP request to the serving gateway control plane device.
  • the network management device may find the corresponding service gateway according to the IP requested by the ARP request message.
  • the control plane device sends the ARP request message to the corresponding serving gateway control plane device.
  • the network management device may parse the ARP request message from the packet_in message, and the network management device may directly send the ARP request message to the serving gateway control plane device.
  • the ARP request message may be encapsulated and sent to the serving gateway control plane device, where the protocol used for re-encapsulation may be a corresponding protocol in OpenFlow, or may be preceded by a network management device and a serving gateway control plane device. Other agreements agreed upon.
  • the network management device may also send the ARP request message received from the forwarding plane device to the corresponding serving gateway control plane device by means of broadcast. For example, after receiving the ARP request message sent by the forwarding plane device, or after parsing and obtaining the ARP request message from the packet_in message sent by the forwarding plane device, the network management device replaces the source address of the ARP request message with the network management. The MAC address of the device, and then the modified APR request message is broadcasted, so that the serving gateway control plane device can send a response message of the APR request message to the network management device.
  • the serving gateway control plane device sends an ARP response message to the network management device.
  • the APR response message carries the MAC address of the serving gateway control plane device.
  • the serving gateway control plane device carries the MAC address of the service gateway control plane device in the ARP response message to the network management device.
  • the service gateway control plane device may also encapsulate the ARP request message and then send it to the network management device, where the OpenFLow protocol may be used for encapsulation, for example, in a packet_out message, or may be encapsulated by other protocols.
  • the serving gateway control plane device sends an ARP response message to the forwarding plane device 1, which can be sent by a Packet_OUT message, wherein the ARP response message carries the above MAC address.
  • the first indication information may be carried in the Packet_OUT message to the forwarding plane device 1, or the first indication information may be additionally sent to the forwarding plane device 1.
  • the first indication information is used to indicate that the ARP response is sent to the eNodeB, where the The indication information may be a flow entry.
  • the SGW control plane may send the second indication information to the forwarding plane device 2, where the forwarding plane device 2 receives the data that the destination MAC address is the MAC address. Discard the datagram when the message is received Therefore, the eNodeB can be sent to the correct forwarding device, and the second indication information can also be a flow entry.
  • the network management device sends an APR response message to the forwarding plane device.
  • the network management device can be advanced and then sent to the forwarding device.
  • the network management device encapsulates the APR response message in a packet_out message and sends it to the forwarding plane device.
  • the forwarding plane device sends the received ARP response message to the eNodeB.
  • the eNodeB caches a MAC address of the forwarding plane device in the ARP response message. After the MAC address of the forwarding plane device is cached, the correspondence between the MAC address of the forwarding plane device and the IP address of the forwarding plane device is stored on the eNodeB, and the IP address of the forwarding plane device is the APR request message broadcast by the eNodeB. The requested IP address.
  • the eNodeB caches the MAC address of the forwarding device, so that the eNodeB can receive the corresponding uplink data packet without the ARP request to obtain the MAC address of the forwarding device.
  • the eNodeB sends an uplink data file to the forwarding plane device corresponding to the MAC address.
  • the eNodeB may perform GTP encapsulation on the uplink data, and then send the uplink data to the forwarding plane device corresponding to the MAC address.
  • the forwarding plane device that sends the ARP request message broadcast by the eNodeB to the network management device may be the same device or the different forwarding plane device.
  • the network service gateway control plane device selects the correct serving gateway control plane device to deliver the MAC address of the forwarding plane device to the network device, and the eNodeB can successfully send the uplink data packet to the eNodeB.
  • the forwarding plane device improves the success rate of transmitting data packets from the mobile access network to the mobile core network.
  • the forwarding plane device reports a MAC address request to the serving gateway control plane device.
  • the serving gateway control plane device herein may have an SGW or
  • a control plane function device such as PGW, a service gateway control plane device can integrate various control plane functions, and the service gateway control plane device can be implemented by a controller supporting OpenFlow.
  • the forwarding plane device herein may be a switch that supports OpenFlow.
  • the foregoing external network may be an enterprise network or an Internet network.
  • the foregoing data packet may be a data packet encapsulated into a GTP packet.
  • the forwarding plane device may also directly report the IP address of the message to the serving gateway control device.
  • the serving gateway control plane device determines, according to the routing policy and the destination IP address of the data on the forwarding plane device, the IP address of the gateway of the external network corresponding to the destination IP address.
  • the routing policy may be a mapping relationship between the destination IP address of the data packet and the IP address of the gateway of the external network, where the routing policy may be configured on the serving gateway control plane device or from other network devices. Get on.
  • the serving gateway control plane device can parse the destination IP address of the data packet from the data packet reported by the forwarding plane device, and then obtain the external information according to the mapping relationship between the destination IP address and the IP address of the gateway of the external network. The IP address of the gateway of the network.
  • the serving gateway control plane device When the serving gateway control plane device does not store the MAC address corresponding to the IP address of the gateway of the external network, the serving gateway control plane device sends an indication message to the forwarding plane device.
  • the foregoing indication message is used to instruct the forwarding plane device to broadcast a MAC address request message to the gateway of the external network to obtain the MAC address of the gateway of the external network.
  • the foregoing MAC address request message may be an ARP request message, and the ARP request message may be sent by using an OpenFlow protocol, for example, encapsulated in a Packet_Out message, or directly sent.
  • OpenFlow protocol for example, encapsulated in a Packet_Out message, or directly sent.
  • the method further includes: the serving gateway control plane device generates a MAC address request according to the IP address of the gateway of the external network.
  • the above indication The information includes a MAC address request message.
  • the serving gateway control plane device may also be saved.
  • the serving gateway control plane device can not query the MAC address of the gateway of the forwarding network device to the external network in the future, thereby saving network resources.
  • the serving gateway control plane device can obtain the MAC address of the gateway of the external network by instructing the forwarding plane device to broadcast the MAC address request message sent by the forwarding plane device, so that the corresponding flow table can be generated for the data packet reported in step 401. Item to achieve the correct transmission of data messages.
  • the forwarding plane device broadcasts the MAC address request message to the gateway of the external network according to the indication message sent by the serving gateway control plane device to obtain the MAC address of the gateway of the external network.
  • the forwarding plane device may broadcast the MAC address request message included in the indication message to the gateway of the external network according to the indication message, thereby acquiring the gateway of the external network.
  • the MAC address may be generated by the forwarding plane device according to the indication message, and broadcasted to the gateway of the external network to obtain the MAC address of the gateway of the external network.
  • the gateway of the external network After receiving the MAC address request message, the gateway of the external network sends its own MAC address to the forwarding plane device.
  • the forwarding plane device reports the MAC address of the received gateway of the external network to the serving gateway control plane device.
  • the serving gateway control plane device sends the forwarding flow entry corresponding to the data packet to the forwarding plane device according to the MAC address of the gateway of the external network reported by the forwarding plane device.
  • the serving gateway control plane device may generate a corresponding forwarding flow entry according to the MAC address, so that the forwarding plane device according to the forwarding flow entry, The data message is forwarded to the gateway of the external network.
  • the forwarding plane device sends the data packet to the external network according to the forwarding flow entry. Gateway.
  • the service gateway control plane device instructs the forwarding plane device to acquire the MAC address of the gateway of the external network, so that the serving gateway control plane device can successfully deliver the forwarded flow of the reported data packet.
  • the entry to the forwarding plane device enables the forwarding plane device to transmit the data packet to the gateway of the external network according to the forwarding flow entry, and successfully implements the transmission of the data packet from the inside of the mobile network to the external network.
  • a network management device is disposed between the forwarding plane device and the serving gateway control plane device, and the forwarding plane device and the serving gateway control plane device are in the process of transmitting the data packet to the external network by the mobile core network. The exchange of information will be carried out through the network management device.
  • step 403 when the serving gateway control plane device does not store the MAC address corresponding to the IP address of the gateway of the external network, the serving gateway control plane device sends an indication message to the forwarding plane device through the network management device.
  • the forwarding plane device reports the MAC address of the gateway of the external network to the serving gateway control plane device through the network management device.
  • the serving gateway control plane device delivers the forwarding flow entry corresponding to the data packet to the forwarding plane device through the network management device.
  • the information between the forwarding plane device and the serving gateway control plane device is forwarded by the network management device, which facilitates the deployment of the forwarding plane device, and the forwarding plane device only needs to send the information to be sent to the serving gateway control plane device to the network management device.
  • the network management device forwards to the corresponding service gateway control plane device according to a preset rule, which is more advantageous for the implementation of control and forwarding separation.
  • the network device may also be a gateway of the external network.
  • the downlink data packet may be transmitted from the external network gateway to the forwarding plane device, and the datagram is successfully transmitted from the external network to the mobile core network. Text.
  • the packet transmission method provided by the embodiment of the present invention can solve the problem that the mobile core network sends data to the external network separately, in the network architecture of the control and forwarding phase separation technology, the mobile access network The problem of the mobile core network sending data, and the problem of the external network sending data to the mobile core network. Therefore, this The message transmission method provided by the invention can successfully implement data transmission of the mobile core network to the external (mobile access network or external network), and can also successfully implement other networks (mobile access network or external network) to the mobile core network. Transmit data packets.
  • the packet transmission methods provided by different embodiments of the present invention are combined to complete the transmission of data packets from the base station to the mobile core network and then to the external network.
  • the above data packet is sent to the server of the Internet by the user equipment.
  • the data packet transmission process can be used as a reference.
  • the related technical terms, concepts, and the like can be referred to the related embodiments. Part, here is not to repeat.
  • the base station After receiving the data packet sent by the UE, the base station encapsulates the data packet, encapsulates the data packet into a GTP packet, and sends the GTP packet to the forwarding plane device. If the MAC address corresponding to the IP address of the forwarding plane device is stored on the base station, that is, the MAC address of the forwarding plane device, the base station may directly send the GTP packet to the corresponding forwarding plane device, if there is no forwarding plane on the base station. When the MAC address of the device is used, the base station needs to acquire the MAC address of the forwarding plane device. The base station can obtain the MAC address of the forwarding plane device by means of an ARP request.
  • the base station broadcasts an ARP request message
  • the IP address requested by the ARP request message is an IP address of the forwarding plane device, where the ARP request message is used to indicate that the IP address is the forwarding plane device of the requested IP address. MAC address.
  • the forwarding plane device receives the broadcast ARP request message, since the ARP request message cannot be processed, the ARP request message needs to be sent to the serving gateway control plane device for processing.
  • the forwarding plane device can also send the ARP request here. The message is sent to the network management device for the network management device to forward to the corresponding serving gateway control plane device for processing.
  • the serving gateway control plane device After receiving the ARP request message, the serving gateway control plane device responds to the ARP request message, and returns a MAC address corresponding to the IP address requested by the ARP request message.
  • the MAC address can be used to enable the eNodeB to find the MAC address corresponding to the MAC address. Forwarding device.
  • the network management device receives the After the ARP request message, there may be two ways to send the ARP request to the corresponding serving gateway control plane device, one of which is that the network management device resolves the IP address requested by the ARP request message, and according to the requested IP address.
  • Selecting a corresponding service gateway control plane device to send the ARP request to the corresponding serving gateway control plane device wherein another manner is that the network management device broadcasts an ARP request to the serving gateway control plane device to obtain a corresponding service gateway control plane.
  • the response of the device after receiving the ARP request message sent by the forwarding device, the network management device replaces the source MAC address of the ARP request with the MAC address of the network management device, and then broadcasts, so that the corresponding service gateway control plane device After receiving the ARP request, the ARP response message is sent to the network management device.
  • the corresponding service gateway control plane device responds to the ARP request message, and returns the MAC address corresponding to the IP requested by the ARP request message.
  • the MAC address can be used to enable the eNodeB to find the MAC address.
  • Corresponding forwarding surface device When the network management device receives the MAC address sent by the serving gateway control plane device, it sends the MAC address to the forwarding plane device. When the forwarding plane device receives the MAC address, it sends the MAC address to the eNodeB.
  • the foregoing MAC address may be encapsulated in a process from the network management device to the eNodeB, such as a GTP encapsulation.
  • the eNodeB After the eNodeB receives the MAC address corresponding to the requested IP address, the eNodeB caches the MAC address, and also records the correspondence between the IP address and the MAC address, so that it is not necessary to obtain the MAC address corresponding to the IP address again. It saves signaling overhead and improves efficiency. After the eNodeB obtains the MAC address of the forwarding plane device, the data packet can be sent to the forwarding plane device.
  • the forwarding plane device forwards the data message to other forwarding plane devices. This step is optional.
  • the forwarding plane device sends the data message to the gateway of the internet.
  • the forwarding plane device After the forwarding plane device receives the data packet, the forwarding plane device needs to report the received data packet to the serving gateway control because there is no forwarding flow entry for the data packet on the forwarding plane device.
  • the device may encapsulate the data packet in a packet_in message and send it to the network management device, and send it to the network management device to The corresponding service gateway control plane device.
  • the serving gateway control plane device After receiving the data packet, the serving gateway control plane device obtains the destination IP address of the data packet by parsing the data packet, and obtains a correspondence between the destination IP address and the IP address of the gateway of the internet. The data should be sent to which internet gateway.
  • the service gateway control plane device also needs to obtain the MAC address of the gateway of the inernet from the external device, so that the forwarding flow entry is generated and sent to the forwarding plane.
  • the device is configured to enable the forwarding plane device to send the data packet to a gateway of the corresponding internet.
  • the monthly service gateway control plane device may instruct the forwarding plane device to send an ARP request message to obtain the MAC address of the gateway of the internet.
  • the serving gateway control plane device sends an indication message to the forwarding plane device through the network management device, and instructs the forwarding plane device to broadcast the ARP request message, so that the ARP request message can be sent to the corresponding internet gateway to obtain the MAC address of the internet gateway.
  • the ARP request message broadcast by the forwarding plane device may be generated by itself, or may be generated by the serving gateway control plane device and carried in the foregoing indication message and sent to the forwarding plane device.
  • the gateway of the Internet After receiving the ARP request message, the gateway of the Internet sends its MAC address to the forwarding device through the ARP response message.
  • the forwarding plane device can report to the serving gateway control plane device through the network management device.
  • the serving gateway control plane device may send a forwarding flow entry indicating the forwarding device to the gateway of the internet to the forwarding plane device.
  • the forwarding plane device may send the data packet to the corresponding internet gateway according to the forwarding flow entry, and then the data may be sent by the internet gateway.
  • the text is sent to the corresponding internet server. So far, the data message is transmitted from the user equipment to the mobile core network, the mobile core network to the internet.
  • the embodiment of the present invention further provides a corresponding device to implement the method for transmitting the document provided by the embodiment of the present invention.
  • Embodiments of the present invention provide a forwarding plane device that can be used to implement a forwarding plane device in the embodiments shown in Figures 2, 3, 4, and 5.
  • Functions, working mechanisms, related technical terms, concepts of the forwarding plane device provided by the embodiments of the present invention For the content, reference may be made to the embodiment shown in FIGS. 1 to 5.
  • the forwarding plane device provided by the embodiment of the present invention may be a switch supporting OpenFlow.
  • the forwarding plane device 5 includes: a first receiving unit 51, a first forwarding unit 52, a second receiving unit 53, and a second forwarding unit 54, wherein:
  • the first receiving unit 51 is configured to receive a MAC address request broadcast by the base station.
  • the MAC address request includes a target IP address, and is used to request a MAC address corresponding to the target IP address.
  • the first forwarding unit 52 is configured to: when the forwarding plane device 6 does not save the first correspondence between the target IP address and the MAC address, forward the MAC address request to the serving gateway control plane device, so that the serving gateway control plane device according to the first correspondence The relationship and destination IP address obtain the MAC address, and the MAC address request response is sent to the forwarding plane device.
  • the MAC address request response described above includes a MAC address.
  • the second receiving unit 53 is configured to receive a MAC address request response.
  • the second forwarding unit 54 is configured to forward a MAC address request response to the base station.
  • the forwarding surface device 5 further includes a third receiving unit 55, and the towel:
  • the third receiving unit 55 is configured to receive a first forwarding indication sent by the serving gateway control plane device.
  • the first forwarding indication is used to instruct the forwarding plane device to forward the MAC address request response to the base station.
  • the second forwarding unit 54 is specifically configured to: send a MAC address request response to the base station according to the first forwarding indication.
  • the first forwarding unit 52 is specifically configured to: forward the MAC address request to the network management device, so that the network management device forwards the MAC address request to the serving gateway control plane device.
  • the second receiving unit 53 is specifically configured to: receive a MAC address request response forwarded by the serving gateway control plane device by using the network management device.
  • the forwarding plane device provided by the embodiment of the present invention, the forwarding plane device sends the MAC address request to the corresponding serving gateway control plane device to make the service gateway control plane
  • the device returns the MAC address corresponding to the destination forwarding plane device, and sends the MAC address to the base station by using the destination forwarding plane device, so that the base station can successfully obtain the MAC address of the next hop mobile core network node, so that the base station can send the data 4
  • the message to the mobile core network node avoids the failure of the base station to learn the MAC address of the next hop mobile core network node, and improves the success rate of the access network to transmit data packets to the mobile core network.
  • the unit division of the forwarding plane device in the embodiment of the present invention is an exemplary description. In practice, there may be a plurality of unit division methods to constitute the forwarding surface device of the embodiment of the present invention.
  • Embodiments of the present invention provide a serving gateway control plane device, which can be used to implement a serving gateway control plane device in the embodiments shown in FIG. 2, FIG. 3, FIG. 4, and FIG.
  • the working mechanism, interaction with other network elements, related technical terms, concepts, and the like can be referred to the embodiments shown in FIGS. 1 to 5.
  • the service gateway control plane device in the embodiment of the present invention may be a hardware entity or a software implementation.
  • the serving gateway control plane device may specifically be a control plane device such as an SGW or a PGW, and the plurality of service gateway control plane devices may be disposed on one hardware entity. For example, it can be a controller that supports OpenFlow.
  • the serving gateway control plane device 6 includes: a receiving unit 61, a MAC address obtaining unit 62, and a first sending unit 63, wherein: the receiving unit 61 is configured to receive a MAC address request.
  • the MAC address request includes a target IP address, and is used to request a MAC address corresponding to the target IP address.
  • the MAC address obtaining unit 62 is configured to obtain a MAC address according to the first correspondence between the target IP address and the MAC address and the target IP address.
  • the first sending unit 63 is configured to send a MAC address request response to the forwarding plane device, so that the forwarding plane device forwards the MAC address request response to the base station.
  • the MAC address request response described above includes a MAC address.
  • the serving gateway control plane device 6 further includes: a second sending unit 64, where:
  • the second transmitting unit 64 transmits the first forwarding indication to the forwarding plane device.
  • the first forwarding indication is used to instruct the forwarding plane device to forward the MAC address request response to the base station.
  • the serving gateway control plane device 6 further includes: a third sending unit 65, where:
  • the third sending unit 65 is configured to send the second forwarding indication to the other forwarding plane device.
  • the foregoing second forwarding indication is used to indicate that the other forwarding plane device discards the data whose destination MAC address is the MAC address.
  • the receiving unit 61 is specifically configured to: receive a MAC address request forwarded by the forwarding plane device by using the network management device.
  • the first sending unit 63 is specifically configured to: forward, by the network management device, the MAC address request response to the forwarding plane device, so that the forwarding plane device forwards the MAC address request response to the base station.
  • the unit division of the service gateway control plane device in the embodiment of the present invention is an exemplary description. In practice, there may be a plurality of unit division methods to constitute the service gateway control plane device of the embodiment of the present invention.
  • the service gateway control plane device obtaineds a MAC address request, and obtains a MAC address corresponding to the destination forwarding plane device according to the destination IP address in the MAC address request and the first correspondence relationship. And transmitting, by the forwarding plane device, the MAC address to the base station, so that the base station can successfully obtain the MAC address of the next hop mobile core network node, so that the base station can send the data packet to the mobile core network node, thereby avoiding the base station
  • the packet transmission failure caused by the MAC address of the next hop mobile core network node is not known, and the success rate of the access network to transmit data packets to the mobile core network is improved.
  • the forwarding plane device provided by the embodiment of the present invention may be a switch supporting OpenFlow.
  • the specific working principle of the interaction with other network elements, related technical terms, concepts, and the like may be referred to the forwarding plane device shown in the embodiment of FIG. 6, and details are not described herein.
  • the forwarding plane device 7 includes a communication unit 71 and a processor 72, where:
  • the communication unit 71 is configured to communicate with an external network element.
  • the processor 72 is configured to:
  • the MAC address request broadcast by the base station is received by the communication unit 71.
  • the MAC address request includes a target IP address, and is used to request a MAC address corresponding to the target IP address.
  • the MAC address request is forwarded to the serving gateway control plane device by the communication unit 71, so that the serving gateway control plane device according to the first correspondence relationship and the target IP address The address acquires the MAC address, and the MAC address request response is sent to the forwarding plane device through the communication unit 81.
  • the MAC address request response includes a MAC address.
  • the MAC address request response is received by the communication unit 71.
  • the MAC address request response is forwarded by the communication unit 71 to the base station.
  • the processor 72 is further configured to receive, by the communication unit 71, a first forwarding indication sent by the serving gateway control plane device.
  • the first forwarding indication is used to instruct the forwarding plane device to forward the MAC address request response to the base station.
  • the processor 72 forwards the MAC address request response to the base station through the communication unit 81 for: transmitting, by the communication unit 71, a MAC address request response to the base station according to the first forwarding indication.
  • the processor 72 forwards the MAC address request to the serving gateway control plane device by using the communication unit 81, specifically: forwarding, by the communication unit 71, the MAC address request to the network management device, so that the network management device forwards the MAC address request to The service gateway controls the surface device.
  • the processor 72 receives the MAC address request response through the communication unit 81, and is specifically configured to: receive, by the communication unit 81, a MAC address request response that is forwarded by the serving gateway control plane device by using the network management device.
  • the unit division of the forwarding plane device in the embodiment of the present invention is an exemplary example. It should be noted that in practice, there may be a plurality of unit division methods to constitute the forwarding plane device of the embodiment of the present invention.
  • the forwarding plane device provided by the embodiment of the present invention, the forwarding plane device passes
  • the MAC address request is sent to the corresponding serving gateway control plane device, so that the serving gateway control plane device returns the MAC address corresponding to the destination forwarding plane device, and sends the MAC address to the base station through the destination forwarding plane device, so that the base station can succeed.
  • the success rate of the access network to transmit data packets to the mobile core network is improved.
  • the service gateway control plane device provided by the embodiment of the present invention may be a hardware entity or a software implementation.
  • the serving gateway control plane device may specifically be a control plane device such as an SGW or a PGW, and the plurality of serving gateway control plane devices may be disposed on one hardware entity.
  • it can be a controller that supports OpenFlow.
  • the specific working principle of the interaction with other network elements, related technical terms, concepts, and the like may be referred to the service gateway control plane device shown in the embodiment of FIG. 7 or FIG. 8 , and details are not described herein.
  • the serving gateway control plane device 8 includes: a communication unit 81 and a processor 82, wherein:
  • the communication unit 81 is configured to communicate with an external network element.
  • the processor 82 is configured to:
  • the MAC address request sent by the forwarding plane device is received by the communication unit 81.
  • the MAC address request includes a target IP address, and is used to request a MAC address corresponding to the target IP address.
  • the MAC address is obtained according to the first correspondence between the target IP address and the MAC address and the target IP address.
  • the MAC address request response is sent by the communication unit 81 to the forwarding plane device, so that the forwarding plane device forwards the MAC address request response to the base station through the communication unit 81. among them.
  • the above MAC address request response includes a MAC address.
  • the foregoing first correspondence is saved on the serving gateway control plane device; or, the foregoing first correspondence is obtained by the serving gateway control plane device from the configuration database.
  • the processor 82 is further configured to send the first forwarding indication to the forwarding plane device through the communication unit 81.
  • the first forwarding indication is used to instruct the forwarding plane device to forward the MAC address request response to the base station.
  • the processor 82 is further configured to send the second forwarding indication to the other forwarding plane device by using the communication unit 81.
  • the second forwarding indication is used to indicate that the other forwarding plane device discards the data whose destination MAC address is the MAC address.
  • the processor 82 receives the MAC address request sent by the forwarding plane device by using the communication unit 81, and is specifically configured to: receive, by the communication unit 81, a MAC address request forwarded by the forwarding plane device through the network management device.
  • the processor 82 sends a MAC address request response to the forwarding plane device through the communication unit 81, so that the forwarding plane device forwards the MAC address request response to the base station through the communication unit 81, and is specifically configured to: pass the MAC address request response through the network management device.
  • the communication unit 81 forwards to the forwarding plane device so that the forwarding plane device forwards the MAC address request response to the base station.
  • the unit division of the service gateway control plane device in the embodiment of the present invention is an exemplary description. In practice, there may be multiple unit division methods to constitute the service gateway control plane device of the embodiment of the present invention.
  • the service gateway control plane device obtaineds a MAC address request, and obtains a MAC address corresponding to the destination forwarding plane device according to the destination IP address in the MAC address request and the first corresponding relationship. Transmitting the MAC address to the base station by using the forwarding plane device, so that the base station can successfully obtain the MAC address of the next hop mobile core network node, so that the base station can send the data packet to the mobile core network node, thereby avoiding the base station Unable to know the next jump
  • the packet transmission failure caused by the MAC address of the core network node improves the success rate of the access network to transmit data packets to the mobile core network.
  • the serving gateway control plane device and the forwarding plane device provided by the embodiments of the present invention may also constitute a communication system to implement the message transmission method provided by the embodiment shown in FIG. 2 to FIG.
  • the communication system 9 includes: a serving gateway control plane device 91 and a forwarding plane device 92.
  • the service gateway control plane device 91 may be a serving gateway control plane device as shown in FIG. 7 or FIG. 8; the forwarding plane device 92 may be a forwarding plane device as shown in FIG. 9.
  • the forwarding plane device 92 is configured to receive a MAC address request broadcast by the base station and forward the MAC address request.
  • the MAC address request includes a target IP address, and is used to request a MAC address corresponding to the target IP address, and the forwarding plane device 92 does not save the first correspondence between the target IP address and the MAC address.
  • the serving gateway control plane device 91 is configured to receive a MAC address request forwarded by the forwarding plane device, obtain a MAC address according to the first correspondence relationship and the target IP address, and send a MAC address request response.
  • the MAC address request response includes a MAC address.
  • the forwarding plane device 92 is further configured to receive a MAC address request response, and forward the MAC address request response to the base station.
  • the service gateway control plane device 91 stores the first correspondence relationship; or the service gateway control plane device 91 is further configured to obtain the first correspondence relationship from the configuration database.
  • the serving gateway control plane device 91 is further configured to send the first forwarding indication to the forwarding plane device 92.
  • the first forwarding indication is used to instruct the forwarding plane device 92 to forward the MAC address request response to the base station.
  • the forwarding plane device 92 is specifically configured to send a MAC address request response to the base station according to the first forwarding indication.
  • the communication system 9 further includes another forwarding plane device 93.
  • the serving gateway control plane device 91 is further configured to send a second forwarding indication to the other forwarding plane device 93, where the second forwarding indication is It is used to instruct other forwarding device to discard the data whose destination MAC address is the MAC address.
  • the communication system 9 further includes: network management.
  • the device 94, the forwarding plane device 92 is specifically configured to forward the MAC address request to the network management device 94.
  • the network management device 94 is configured to receive the MAC address request forwarded by the forwarding plane device 92, and send a MAC address request to the serving gateway control plane device 91.
  • the network management device 94 is specifically configured to broadcast a MAC address request to the serving gateway control plane device 91 and other control plane devices 95.
  • the network management device 94 is specifically configured to send a MAC address request to the serving gateway control plane device 91 according to the second correspondence between the target IP address and the service gateway control plane and the target IP address.
  • the network management device 94 saves the second correspondence; or the network management device 94 is configured to obtain the second correspondence from the configuration database.
  • the network management device 94 is further configured to receive a MAC address request response from the serving gateway control plane device 91, and send a MAC address request response to the forwarding plane device 92.
  • the forwarding plane device forwards the MAC address request broadcast by the base station to the serving gateway control plane device, so that the serving gateway control plane device according to the destination IP address in the MAC address request and the first correspondence relationship Obtaining a MAC address corresponding to the target IP address, and sending the MAC address to the base station, so that the base station can successfully obtain the MAC address of the next hop mobile core network node, so that the base station can send the data packet to the mobile
  • the core network node avoids the failure of the transmission of the packet due to the base station's inability to know the MAC address of the next-hop mobile core network node, and improves the success rate of the access network to transmit data packets to the mobile core network.
  • the serving gateway control plane device and the forwarding plane device provided by the embodiments of the present invention may also constitute a communication system to implement the packet transmission method provided by the embodiment shown in FIG. 2 to FIG.
  • the communication system S 10 includes: a serving gateway control plane device S 101 and a forwarding plane device S 102.
  • the serving gateway control plane device S 101 may be a serving gateway control plane device as shown in FIG. 10;
  • the forwarding plane device S 102 may be a forwarding plane device as shown in FIG. 9.
  • the forwarding plane device S 102 is configured to receive a MAC address request broadcast by the base station and forward the MAC address request.
  • the MAC address request includes a target IP address, and is used for The MAC address corresponding to the target IP address is obtained, and the forwarding plane device S10292 does not save the first correspondence between the target IP address and the MAC address.
  • the serving gateway control plane device S101 is configured to receive a MAC address request forwarded by the forwarding plane device S102, obtain a MAC address according to the first correspondence relationship and the target IP address, and send a MAC address request response.
  • the MAC address request response includes a MAC address.
  • the forwarding plane device S 102 is further configured to receive a MAC address request response, and forward the MAC address request response to the base station.
  • the serving gateway control plane device S101 maintains a first correspondence.
  • the serving gateway control plane device S101 is further configured to obtain a first correspondence from the configuration database.
  • the serving gateway control plane device S101 is further configured to send the first forwarding indication to the forwarding plane device S102.
  • the first forwarding indication is used to instruct the forwarding plane device S 10292 to forward the MAC address request response to the base station.
  • the forwarding plane device S102 is specifically configured to send a MAC address request response to the base station according to the first forwarding indication.
  • the communication system S10 further includes another forwarding plane device S103.
  • the serving gateway control plane device S101 is further configured to send a second forwarding indication to the other forwarding plane device S103.
  • the second forwarding indication is used to instruct the other forwarding plane device S102 to discard the data packet whose destination MAC address is a MAC address.
  • the communication system S10 further includes: a network management device S104, where the forwarding plane device S102 is specifically configured to forward a MAC address request to the network management device S104.
  • the network management device S104 is configured to receive the MAC address request forwarded by the forwarding plane device S 10292, and send a MAC address request to the serving gateway control plane device S10191.
  • the network management device S104 is specifically configured to broadcast a MAC address request to the serving gateway control plane device S101 and other control plane devices S105.
  • the network management device S104 is specifically configured to send a MAC address request according to the second correspondence between the target IP address and the serving gateway control plane and the target IP address.
  • the service gateway control plane device S101 To the service gateway control plane device S101.
  • the network management device S 104 holds the second correspondence relationship; or the network management device S 104 is configured to acquire the second correspondence from the configuration database.
  • the network management device S 104 is further configured to receive a MAC address request response from the serving gateway control plane device S 10191, and send a MAC address request response to the forwarding plane device S 10292.
  • the forwarding plane device S 102 forwards the MAC address request broadcast by the base station to the serving gateway control plane device S 101, so that the serving gateway control plane device S 101 according to the destination IP in the MAC address request An address corresponding to the first correspondence, to obtain a MAC address corresponding to the target IP address, and send the MAC address to the base station, so that the base station can successfully obtain the MAC address of the next hop mobile core network node, so the base station can send
  • the data is transmitted to the mobile core network node to avoid packet transmission failure caused by the base station not being able to learn the MAC address of the next hop mobile core network node, thereby improving the success rate of the access network transmitting data packets to the mobile core network.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are only schematic.
  • 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 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.
  • each functional unit may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit.
  • the above units may be implemented in the form of hardware or in the form of hardware plus software functional units.
  • All or part of the steps of implementing the above method embodiments may be performed by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium.
  • the execution of the program includes the steps of the foregoing method embodiments; and the foregoing storage medium includes: a USB flash drive, a removable hard disk, a read only memory (ROM), and a random access memory (A random access memory). , referred to as RAM), disk or optical disk, and other media that can store program code.

Abstract

本发明公开了一种报文传输方法、设备及通信系统,涉及通信领域,能够在转发面和控制面分离的移动核心网络的环境中提高接入网向移动核心网络传输报文的成功率。该方法包括:转发面装置接收基站广播的MAC地址请求;该MAC地址请求包括目标IP地址,用于请求目标IP地址对应的MAC地址;当转发面装置未保存目标IP地址与MAC地址的第一对应关系时,转发面装置将MAC地址请求转发至服务网关控制面装置,以使服务网关控制面装置根据第一对应关系和目标IP地址获取MAC地址,发送MAC地址请求响应至转发面装置;转发面装置接收MAC地址请求响应;转发面装置转发MAC地址请求响应至基站。本发明应用于报文传输。

Description

一种报文传输方法、 设备及通信系统 技术领域
本发明涉及通信领域, 尤其涉及一种报文传输方法、 设备及通 信系统。 背景技术
现今,随着互联网的规模迅速扩张,现有路由系统的过分臃肿, 及可控性较差, 因此需要全新的网络架构理念来维持互联网的可持 续发展。 鉴于此, 开放流 ( OpenFlow ) 技术应运而生。 OpenFlow技 术是一套开放接口、 支持多控制的交换标准。 OpenFlow技术是在现 有传输控制十办议 /互联网十办议 ( Transmission Control Protocol/Internet Protocol , TCP/IP ) 技术的基础上, 将原本完全由传统交换机 /路由 器控制 的数据包转发过程, 转化为 由支持 OpenFlow 技术的 OpenFlow交换机 ( 以下简称交换机) 和 OpenFlow控制器 ( 以下简 称控制器) 分别完成的独立过程, 实现了转发面和控制面的分离。
目前, 将 OpenFlow技术应用到移动核心网络已经成为一种趋 势, 但是将 OpenFlow技术应用到移动核心网络之后, 接入网向移动 核心网络传输报文时可能会出现报文传输失败的现象。 发明内容
本发明的实施例提供一种报文传输方法、 设备及通信系统, 能 够在转发面和控制面分离的移动核心网络的环境中提高接入网向移 动核心网络传输 4艮文的成功率。
为达到上述目 的, 本发明的实施例釆用如下技术方案: 第一方面, 提供一种通信系统, 包括: 位于核心网的转发面装 置和服务网关控制面装置;
所述转发面装置用于接收基站广播的 MAC地址请求, 并转发 所述 MAC地址请求; 其中, 所述 MAC地址请求包括目标 IP地址 , 用于请求所述目标 IP地址对应的 MAC地址, 所述转发面装置未保 存所述目标 IP地址与所述 MAC地址的第一对应关系;
所述服务网关控制面装置用于接收所述转发面装置转发的所 述 MAC地址请求, 根据所述第一对应关系和所述目标 IP地址获取 所述 MAC地址, 发送 MAC地址请求响应; 其中所述 MAC地址请 求响应包括所述 MAC地址;
所述转发面装置还用于接收所述 MAC地址请求响应, 转发所 述 MAC地址请求响应至所述基站。
在第一方面的第一种可能的实现方式中,
所述服务网关控制面装置上保存有所述第一对应关系; 或者, 所述服务网关控制面装置还用于从配置数据库获取所述第一 对应关系。
结合第一方面或第一方面的第一种可能的实现方式, 在第一方 面的第二种可能的实现方式中,
所述服务网关控制面装置还用于发送第一转发指示至所述转 发面装置; 其中所述第一转发指示用于指示所述转发面装置转发所 述 MAC地址请求响应至所述基站;
所述转发面装置具体用于根据所述第一转发指示, 发送所述 MAC地址请求响应至所述基站。
结合第一方面或第一方面的第一种可能的实现方式或第一方 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, 所述系统还包括其他转发面装置;
所述服务网关控制面装置还用于发送第二转发指示至所述其 他转发面装置; 其中, 所述第二转发指示用于指示所述其他转发面 装置丟弃目 的 MAC地址为所述 MAC地址的数据报文。
结合第一方面或第一方面的第一种至第三种可能的实现方式 中的任一种实现方式, 在第一方面的第四种可能的实现方式中, 所 述系统还包括网络管理装置; 所述转发面装置具体用于转发所述 MAC地址请求至所述网络 管理装置;
所述网络管理装置用于接收所述转发面装置转发的 MAC地址 请求, 发送所述 MAC地址请求至所述服务网关控制面装置。
根据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, 所述系统还包括其他控制面装置;
所述网络管理装置具体用于向所述服务网关控制面装置和所 述其他控制面装置广播所述 MAC地址请求。
根据第一方面的第四种可能的实现方式, 在第一方面的第六种 可能的实现方式中,
所述网络管理装置具体用于根据所述目标 IP 地址和所述服务 网关控制面的第二对应关系以及所述目标 IP 地址, 发送所述 MAC 地址请求至所述服务网关控制面装置。
根据第一方面的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,
所述网络管理装置保存有所述第二对应关系; 或者,
所述网络管理装置用于从配置数据库获取所述第二对应关系。 结合第一方面或第一方面的第四种至第七种可能的实现方式 中的任一种实现方式, 在第一方面的第八种可能的实现方式中, 所述网络管理装置还用于从所述服务网关控制面装置接收所 述 MAC地址请求响应, 发送所述 MAC地址请求响应至所述转发面 装置。
第二方面, 提供一种转发面装置, 包括:
第一接收单元用于接收基站广播的 MAC地址请求; 其中所述 MAC地址请求包括目标 IP地址, 用于请求所述目标 IP地址对应的 MAC地址;
第一转发单元用于当所述转发面装置未保存所述目标 IP 地址 与所述 MAC地址的第一对应关系时, 将所述 MAC地址请求转发至 服务网关控制面装置, 以使所述服务网关控制面装置根据所述第 ― 对应关系和所述目标 IP地址获取所述 MAC地址,发送 MAC地址请 求响应至所述转发面装置; 其中所述 MAC 地址请求响应包括所述 MAC地址;
第二接收单元用于接收所述 MAC地址请求响应;
第二转发单元用于转发所述 MAC地址请求响应至所述基站。 在第二方面的第一种可能的实现方式中:
第三接收单元用于接收所述服务网关控制面装置发送的第一 转发指示; 其中所述第一转发指示用于指示所述转发面装置转发所 述 MAC地址请求响应至所述基站;
所述第二转发单元具体用于: 根据所述第一转发指示, 发送所 述 MAC地址请求响应至所述基站。
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:
所述第一转发单元具体用于: 转发所述 MAC地址请求至所述 网络管理装置,以使所述网络管理装置将所述 MAC地址请求转发至 所述服务网关控制面装置。
结合第二方面或第二方面的第一种可能的实现方式或第二方 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:
所述第二接收单元具体用于: 接收所述服务网关控制面装置通 过所述网络管理装置转发的所述 MAC地址请求响应。
第三方面, 提供一种服务网关控制面装置, 包括:
接收单元用于接收 MAC 地址请求; 其中所述 MAC 地址请求 包括目标 IP地址, 用于请求所述目标 IP地址对应的 MAC地址;
MAC地址获取单元用于根据所述目标 IP地址与所述 MAC地 址的第一对应关系和所述目标 IP地址获取所述 MAC地址;
第一发送单元用于发送 MAC 地址请求响应至所述转发面装 置, 以便所述转发面装置转发所述 MAC地址请求响应至所述基站; 其中所述 MAC地址请求响应包括所述 MAC地址。 在第三方面的第一种可能的实现方式中:
所述第一对应关系是保存在所述服务网关控制面装置上的; 或 者, 所述第一对应关系是所述服务网关控制面装置从配置数据库中 获取的。
结合第三方面或第三方面的第一种可能的实现方式, 在第三方 面的第二种可能的实现方式中, 所述服务网关控制面装置, 还包括: 第二发送单元用于发送第一转发指示至所述转发面装置; 其中 所述第一转发指示用于指示所述转发面装置转发所述 MAC 地址请 求响应至所述基站。
结合第三方面或第三方面的第一种可能的实现方式, 在第三方 面的第三种可能的实现方式中, 所述服务网关控制面装置, 还包括: 第三发送单元用于发送第二转发指示至其他转发面装置; 其 中, 所述第二转发指示用于指示所述其他转发面装置丟弃目 的 MAC 地址为所述 MAC地址的数据 ^艮文。
结合第三方面或第三方面的第一种至第三种可能的实现方式 中的任一种实现方式, 在第三方面的第四种可能的实现方式中: 所述接收单元具体用于: 接收所述转发面装置通过所述网络管 理装置转发的所述 MAC地址请求。
结合第三方面或第三方面的第一种至第四种可能的实现方式 中的任一种实现方式, 在第三方面的第五种可能的实现方式中: 所述第一发送单元具体用于: 通过所述网络管理装置将所述 MAC地址请求响应转发至所述转发面装置, 以便所述转发面装置转 发所述 MAC地址请求响应至所述基站。
第四方面, 提供一种报文传输方法, 包括:
转发面装置接收基站广播的 MAC 地址请求; 其中所述 MAC 地址请求包括目标 IP地址, 用于请求所述目标 IP地址对应的 MAC 地址;
当所述转发面装置未保存所述目标 IP地址与所述 MAC地址的 第一对应关系时,所述转发面装置将所述 MAC地址请求转发至服务 网关控制面装置, 以使所述服务网关控制面装置根据所述第一对应 关系和所述目标 IP地址获取所述 MAC地址,发送 MAC地址请求响 应至所述转发面装置; 其中所述 MAC地址请求响应包括所述 MAC 地址;
所述转发面装置接收所述 MAC地址请求响应;
所述转发面装置转发所述 MAC地址请求响应至所述基站。 在第四方面的第一种可能的实现方式中,
所述方法还包括: 所述转发面装置接收所述服务网关控制面装 置发送的第一转发指示; 其中所述第一转发指示用于指示所述转发 面装置转发所述 MAC地址请求响应至所述基站;
所述转发面装置转发所述 MAC地址请求响应至所述基站具体 包括: 所述转发面装置根据所述第一转发指示, 发送所述 MAC地址 请求响应至所述基站。
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,所述转发面装置将所述 MAC地址请 求转发至服务网关控制面装置具体包括:
所述转发面装置转发所述 MAC 地址请求至所述网络管理装 置,以使所述网络管理装置将所述 MAC地址请求转发至所述服务网 关控制面装置。
结合第四方面或第四方面的第一种可能的实现方式或第四方 面的第二种可能的实现方式, 在第四方面的第三种可能的实现方式 中, 所述转发面装置接收所述 MAC地址请求响应具体用于:
所述转发面装置接收所述服务网关控制面装置通过所述网络 管理装置转发的所述 MAC地址请求响应。
第五方面, 提供一种报文传输方法, 包括:
服务网关控制面装置接收 MAC 地址请求; 其中所述 MAC 地 址请求包括目标 IP地址, 用于请求所述目标 IP地址对应的 MAC地 址;
所述服务网关控制面装置根据所述目标 IP地址与所述 MAC地 址的第一对应关系和所述目标 IP地址获取所述 MAC地址;
所述服务网关控制面装置发送 MAC地址请求响应至所述转发 面装置,以便所述转发面装置转发所述 MAC地址请求响应至所述基 站; 其中所述 MAC地址请求响应包括所述 MAC地址。
在第五方面的第一种可能的实现方式中:
所述第一对应关系是保存在所述服务网关控制面装置上的; 或 者, 所述第一对应关系是所述服务网关控制面装置从配置数据库中 获取的。
结合第五方面或第五方面的第一种可能的实现方式, 在第五方 面的第二种可能的实现方式中, 所述方法还包括:
所述服务网关控制面装置发送第一转发指示至所述转发面装 置; 其中所述第一转发指示用于指示所述转发面装置转发所述 MAC 地址请求响应至所述基站。
结合第五方面或第五方面的第一种可能的实现方式, 在第五方 面的第三种可能的实现方式中, 所述方法还包括:
所述服务网关控制面装置发送第二转发指示至其他转发面装 置; 其中, 所述第二转发指示用于指示所述其他转发面装置丟弃目 的 MAC地址为所述 MAC地址的数据 4艮文。
结合第五方面或第五方面的第一种至第三种可能的实现方式 中的任一种实现方式, 在第五方面的第四种可能的实现方式中, 所 述服务网关控制面装置接收转发面装置发送的 MAC 地址请求具体 包括:
所述服务网关控制面装置接收所述转发面装置通过所述网络 管理装置转发的所述 MAC地址请求。
结合第五方面或第五方面的第一种至第四种可能的实现方式 中的任一种实现方式, 在第五方面的第五种可能的实现方式中, 所 述服务网关控制面装置发送 MAC地址请求响应至所述转发面装置, 以便所述转发面装置转发所述 MAC 地址请求响应至所述基站具体 包括: 所述服务网关控制面装置通过所述网络管理装置将所述 MAC 地址请求响应转发至所述转发面装置, 以便所述转发面装置转发所 述 MAC地址请求响应至所述基站。
第六方面, 提供一种转发面设备, 包括:
通信单元, 用于与外部网元进行通信;
处理器, 用于:
通过所述通信单元接收基站广播的 MAC地址请求; 其中所述 MAC地址请求包括目标 IP地址, 用于请求所述目标 IP地址对应的 MAC地址;
当所述转发面设备未保存所述目标 IP地址与所述 MAC地址的 第一对应关系时,通过所述通信单元将所述 MAC地址请求转发至服 务网关控制面设备, 以使所述服务网关控制面设备根据所述第一对 应关系和所述目标 IP地址获取所述 MAC地址, 通过所述通信单元 发送 MAC地址请求响应至所述转发面设备; 其中所述 MAC地址请 求响应包括所述 MAC地址;
通过所述通信单元接收所述 MAC地址请求响应;
通过所述通信单元转发所述 MAC地址请求响应至所述基站。 在第六方面的第一种可能的实现方式中:
所述处理器还用于通过所述通信单元接收所述服务网关控制 面设备发送的第一转发指示; 其中所述第一转发指示用于指示所述 转发面设备转发所述 MAC地址请求响应至所述基站;
所述处理器通过所述通信单元转发所述 MAC地址请求响应至 所述基站具体用于: 根据所述第一转发指示, 通过所述通信单元发 送所述 MAC地址请求响应至所述基站。
结合第六方面或第六方面的第一种可能的实现方式, 在第六方 面的第二种可能的实现方式中:
所述处理器通过所述通信单元将所述 MAC地址请求转发至服 务网关控制面设备具体用于:通过所述通信单元转发所述 MAC地址 请求至所述网络管理设备,以使所述网络管理设备将所述 MAC地址 请求转发至所述服务网关控制面设备。
结合第六方面或第六方面的第一种可能的实现方式或第六方 面的第二种可能的实现方式, 在第六方面的第三种可能的实现方式 中:
所述处理器通过所述通信单元接收所述 MAC地址请求响应具 体用于: 通过所述通信单元接收所述服务网关控制面设备通过所述 网络管理设备转发的所述 MAC地址请求响应。
第七方面, 提供一种服务网关控制面设备, 包括:
通信单元用于与外部网元进行通信;
处理器, 用于:
通过所述通信单元接收转发面设备发送的 MAC地址请求; 其 中所述 MAC地址请求包括目标 IP地址, 用于请求所述目标 IP地址 对应的 MAC地址;
根据所述目标 IP地址与所述 MAC地址的第一对应关系和所述 目标 IP地址获取所述 MAC地址;
通过所述通信单元发送 MAC 地址请求响应至所述转发面设 备,以便所述转发面设备通过所述通信单元转发所述 MAC地址请求 响应至所述基站;其中所述 MAC地址请求响应包括所述 MAC地址。
在第七方面的第一种可能的实现方式中:
所述第一对应关系是保存在所述服务网关控制面设备上的; 或 者, 所述第一对应关系是所述服务网关控制面设备从配置数据库中 获取的。
结合第七方面或第七方面的第一种可能的实现方式, 在第七方 面的第二种可能的实现方式中:
所述处理器还用于通过所述通信单元发送第一转发指示至所 述转发面设备; 其中所述第一转发指示用于指示所述转发面设备转 发所述 MAC地址请求响应至所述基站。
结合第七方面或第七方面的第一种可能的实现方式, 在第七方 面的第三种可能的实现方式中: 所述处理器还用于通过所述通信单元发送第二转发指示至其 他转发面设备; 其中, 所述第二转发指示用于指示所述其他转发面 设备丟弃目 的 MAC地址为所述 MAC地址的数据 ^艮文。
结合第七方面或第七方面的第一种至第三种可能的实现方式 中的任一种实现方式, 在第七方面的第四种可能的实现方式中, 所 述处理器通过所述通信单元接收转发面设备发送的 MAC 地址请求 具体用于: 通过所述通信单元接收所述转发面设备通过所述网络管 理设备转发的所述 MAC地址请求。
结合第七方面或第七方面的第一种至第四种可能的实现方式 中的任一种实现方式, 在第七方面的第五种可能的实现方式中: 所述处理器通过所述通信单元发送 MAC地址请求响应至所述 转发面设备, 以便所述转发面设备通过所述通信单元转发所述 MAC 地址请求响应至所述基站具体用于: 通过所述网络管理设备将所述 MAC地址请求响应通过所述通信单元转发至所述转发面设备, 以便 所述转发面设备转发所述 MAC地址请求响应至所述基站。
本发明的实施例提供的报文传输方法、 设备及通信系统, 转发 面装置将基站广播的 MAC地址请求转发至服务网关控制面装置,以 便该服务网关控制面装置根据该 MAC地址请求中的目 的 IP地址与 第一对应关系 ,以获取该目标 IP地址对应的 MAC地址,并将该 MAC 地址发送至基站, 从而使得该基站可以成功获得下一跳移动核心网 络节点的 MAC地址,因此可以让基站发送数据 4艮文至该移动核心网 络节点,避免由于基站无法获知下一跳移动核心网络节点的 MAC地 址而导致的报文传输失败, 提高了接入网向移动核心网络传输数据 报文的成功率。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下 面将对实施例或现有技术描述中所需要使用的附图作简单地介绍, 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的前提下, 还可以 根据这些附图获得其他的附图。
图 1为本发明的实施例提供的一种转发面与控制面分离后转发 面实体与控制面实体的架构图;
图 2 为本发明的实施例提供的一种报文传输方法的流程示意 图;
图 3为本发明的实施例提供的另一种报文传输方法的流程示意 图;
图 4为本发明的实施例提供的又一种报文传输方法的流程示意 图;
图 5为本发明的实施例提供的再一种报文传输方法的流程示意 图;
图 6为本发明的实施例提供的一种转发面装置的装置示意图; 图 7 为本发明的实施例提供的另一种转发面装置的装置示意 图;
图 8为本发明的实施例提供的一种服务网关控制面装置的装置 示意图;
图 9为本发明的另一实施例提供的一种转发面设备的装置示意 图;
图 10 为本发明的另一实施例提供的一种服务网关控制面设备 的装置示意图;
图 1 1 为本发明的实施例提供的一种通信系统的系统示意图; 图 12为本发明的实施例提供的另一种通信系统的系统示意图; 图 13为本发明的实施例提供的又一种通信系统的系统示意图; 图 14为本发明的实施例提供的再一种通信系统的系统示意图; 图 15为本发明的实施例提供的另一种通信系统的系统示意图; 图 16为本发明的实施例提供的又一种通信系统的系统示意图。 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他 实施例, 都属于本发明保护的范围。
在现有的 OpenFlow 架构中, 包括 OpenFlow 交换机及外部控 制器, 一个 OpenFlow 交换机是由流表 ( Flow Table )、 安全通道 ( Secure Channel ) 和 OpenFlow协议 ( OF Protocol ) 组成。 通常在 流表中存储最核心的信息来实现查找、 转发、 统计和过滤等功能, 交换机通过 OpenFlow协议经过一个安全通道 ( Secure Channel ) 连 接到外部控制器 ( Controller ) , 控制器对流表进行查询和管理。 OpenFlow交换机是整个 OpenFlow 网络的核心部件, 主要管理数据 层的转发。 OpenFlow交换机接收到输入数据包后, 首先查找交换机 上已安装的流表, 如果没有匹配, 则把数据包转发给控制器, 由控 制器决定。
在控制面和转发面分离的移动核心网络中, 转发面用于实现报 文转发的功能, 控制面用于实现对于报文转发的控制。 其中转发面 的功能可以由转发面装置来实现, 控制面的功能可以由控制装置服 务网关控制面装置来实现。 可以理解的是, 本发明实施例中的转发 面装置, 也可以称为交换设备、 交换机等, 可以釆用 OpenFlow的交 换机实现, 本发明实施例中的控制装置服务网关控制面装置, 也可 以称为控制应用、 控制器、 控制设备等, 可以釆用 OpenFlow的控制 器实现。
图 1 为一种转发面与控制面分离的移动核心网络的架构的示 例。 其中, 在图 1 中, 转发面仅仅处理控制面给其发送的流表项所 对应的报文, 而不处理其他的报文。 其中, 上述的转发面装置可以 由支持 OpenFlow的交换机来实现, 如各厂商支持的 OpenFlow交换 机, 或者是釆用软件 Open vSwitch实现的交换机; 转发面的控制面 装置可以是控制转发面的控制应用, 即各种实现控制面功能的应用, 如 SGW 的控制面的应用、 PGW 的控制面的应用、 路由的控制面的 应用等。 上述控制应用运行在网络管理装置上。 网络管理装置可以 是具备控制器架构的系统, 网络管理装置上部署有网络操作系统, 其中控制器架构包括当前的 NOX、 POX , Floodlight等控制器架构; 当交换设备需要发送报文至对应的控制应用时, 先发送报文至网络 操作系统, 再由网络操作系统转发至对应的控制应用。 图 1 中移动 核心网络的转发面装置和接入网的网络设备相连, 该网络设备根据 不同的网络制式可以是不同的设备, 例如可以是基站, 也可以是基 站控制器。 图 1 中移动核心网络的转发面装置还与外部网络中的外 部网络网关相连, 该外部网络可以是企业的网络, 也可以是互联网。
作为另一种转发面与控制面分离的移动核心网络, 转发面的控 制应用可以由硬件实现, 也可以称为控制设备, 例如由 OpenFlow的 控制器实现, 每个 OpenFlow的控制器可集成例如 SGW、 PGW等的 控制功能,也可以由一个 OpenFlow的控制器集成多个转发面的控制 功能。 在该移动核心网络中, 网络管理装置是可选的, 各个控制设 备可以与对应的转发面装置相连。 可以理解的是, 在该移动核心网 络中也可以架设网络管理装置, 该网络管理装置可以由硬件实现, 可以称为网络管理设备。 交换设备与控制设备通过该网络管理装置 互联。 当交换设备需要发送报文至控制设备时, 先发送报文至网络 管理设备, 由网络管理设备发送至对应的控制设备。
本领域普通技术人员应该可以理解, 控制面与转发面分离的移 动核心网络不限于上述两种示例, 还有可以有其他的架构, 本发明 实施例对此不作限制。
上述对于服务网关控制面装置、 网络管理装置以及转发面装置 等的说明和举例适用于以下实施例。 在以下实施例中, 相关的概念 和举例将不做过多的赘述。
在上述网络架构中, 支持 OpenFlow协议的交换设备在接收到 没有流表项可以匹配的 4艮文后, 会将该 4艮文携带在 Packet— in消息中 发送到服务网关控制面装置上。 当基站上由于没有保存下一跳移动 核心网络节点的 MAC地址而发送 ARP 文时, 转发面装置收到基 站发送的 ARP 4艮文后由于没有相匹配的流表项会将该 ARP 保五年 发送至控制面装置。 现有的控制面装置在处理 ARP报文时, 一般会 指示交换机泛洪 ( FLOOD ) 此报文。 在移动网络中, 需要被传输的 数据报文通常会被封装在 GTP ( GPRS tunnel protocol , GPRS隧道 协议)才艮文中进行传输,若 GTP才艮文中包括 ARP( Address Resolution Protocol , 地址解析协议)请求 4艮文时, 由于转发面装置没有可以匹 配该 GTP 文的流表项, 在接收到该 GTP 文后, 会泛洪该 GTP 才艮文, 导致网络内部形成大量 GTP 4艮文, 外部网络的网关收到该被 泛洪的 GTP ^艮文后, 由于不支持 GTP协议而导致无法解析出 ARP 请求报文, 因此也无法处理其中的 ARP 请求报文。 而一旦 ARP 报 文无法被正确处理将导致通信失败。 基于上述情况, 本发明提供了 一种新的报文传输方法、 设备及装置。
如图 2所示, 本发明的实施例提供一种报文传输方法, 可以由 转发面装置来实现, 具体的, 本实施例主要针对数据报文从移动接 入网 向釆用控制面与转发面分离 的移动核心 网 ( 例如: 运用 OpenFlow技术的移动核心网 ) 传输的过程, 其中, 该报文传输方法 具体包括如下步骤:
101、 转发面装置接收基站广播的 MAC地址请求。
示例性的, 本发明中的转发面装置可以为支持 OpenFlow的交 换机。 而上述的服务网关控制面装置可以是硬件实体或通过软件来 实现, 并且多个服务网关控制面装置可以设置在一个硬件实体上。 而上述的 MAC地址请求包括目标 IP地址, 用于请求目标 IP地址对 应的 MAC地址。
示例性的, 基站在接收到 UE发送的数据报文后广播至转发面 装置。 作为一种数据传输的方式, 基站要将数据报文发送至交换装 置, 需要获知目 的交换装置的 MAC地址, 但基站在接收到 UE发送 的数据报文后,该报文的目的 IP地址为服务器的 IP地址,目 的 MAC 地址为基站的 MAC地址, 因此, 基站在接收到该数据报文后, 首先 将该数据报文的 MAC地址换成下一跳(转发面装置)的 MAC地址。 因此, 当基站上配有有目的转发面装置的 MAC地址时, 可以发送数 据报文至目的转发面装置; 当基站上没有目 的转发面装置的 MAC地 址时, 会广播该 MAC地址请求消息 (例如: ARP请求消息), 通常 基站向移动核心网络发送数据报文时, 会将数据报文封装在 GTP报 文中进行发送, 因此这里基站会将该 MAC地址请求封装在 GTP才艮 文中进行广播。 当收到该 GTP报文的转发面装置, 由于在转发面装 置上没有与该 GTP报文匹配的流表项, 因此, 转发面装置可以将该 GTP报文上报至本发明实施例中的服务网关控制面装置。
102、 当转发面装置未保存目标 IP地址与 MAC地址的第一对 应关系时, 转发面装置将 MAC 地址请求转发至服务网关控制面装 置, 以使服务网关控制面装置根据第一对应关系和目标 IP地址获取 MAC地址, 发送 MAC地址请求响应至转发面装置。
其中, 上述的第一对应关系可以是预先配置在服务网关控制面 装置上的, 也可以服务网关控制面装置从配置数据库中获取的。 示 例性的, 该第一对应关系可以是服务器 IP地址与转发面装置的网关 的 IP地址的映射关系表, 本发明对此不作限制。 示例性的, 上述的 MAC地址请求响应封装在数据报文中。
示例性的, 当转发面装置接收到该 GTP 报文后, 由于在转发 面装置上并没有配置如何处理该 MAC地址请求的转发规则 (如, 流 表项), 因此, 转发面装置会将该 MAC地址请求上报至本发明实施 例中的服务网关控制面装置 (如, 通过 Packet— IN消息)。
103、 转发面装置接收 MAC地址请求响应。
其中, 上述的 MAC 地址请求响应中包含目 的转发面装置的 MAC地址。
104、 转发面装置转发 MAC地址请求响应至基站。
可选的, 转发面装置根据服务网关控制面装置发送的第一指示 消息将 MAC地址请求响应发送至基站。 其中, 上述的第一指示消息 用于指示转发面装置将 MAC地址请求响应发送至基站,而该第一指 示消息可以是转发流表项。
需要说明的是, 由于在移动核心网络可能会部署有多个转发面 装置, 即基站连接有多个转发面装置, 因此, 基站会广播 MAC地址 请求至多个转发面装置。 而服务网关控制面装置在向转发面装置发 送 MAC地址请求响应的同时,可以向目标转发面装置再发送第一指 示消息,该第一指示消息用于指示转发面装置将 MAC地址请求响应 发送至基站, 而该第一指示消息可以是转发流表项。 对于其他转发 面装置服务网关控制面装置可以向其发送第二指示消息, 该第二指 示消息用于指示该其他转发面装置丟弃目 的 MAC 地址为 目 的转发 面装置的的数据报文, 该数据报文中封装有 MAC地址请求响应。 其 中, 上述的第二指示消息也可以为转发流表项。
其中, 上述的转发流表项, 是转发规则的一种实现方式, 包括 匹配 i或字段( match field )、计数器( counters )和指令集( instructions ) 等组成, 不同的厂商可以根据各自的需求设计功能各异的转发流表 项。 具体的, 转发流表项的匹配域包括输入接口、 数据包头以及由 前一个流表确定的元数据 ( metadata )。 OpenFlow 1 .2规范定义了从 数据链路层到传输层五层数据包头中 36种用于头域匹配的字段, 每 个头域同时具备长度、 掩码、 前提三个属性要求; 转发流表项的计 数器统计流量的信息, 例如活动表项、 查找次数、 发送包次数等, 可以针对每张转发流表项、 每个流、 每个端口、 每个队列进行维护; 流表的指令集分为必备动作( Required Actions )和可选动作( Optional Actions )„ 三个必备动作为: 将流转发到给定端口; 封装并转发此流 的报文到控制器, 由控制器决定是否在流表中增加流; 丟弃此报文。
示例性的, 在转发面装置和服务网关控制面装置之间还可以架 设网络管理装置。 而该网络管理装置可以是软件实现, 也可以是硬 件实体, 并且可以与服务网关控制面装置集成在一个设备上。 在架 设有网络管理装置的网络架构下,转发面装置可以将上报的 M A C地 址请求等信息统一发送至网络管理装置, 由网络管理装置转发至相 应的服务网关控制面装置; 服务网关控制面装置发送至转发面装置 的信息也可以由网络管理装置来转发。 例如, 在架设网络管理装置 的架构下, 当转发面装置未保存目标 IP地址与 MAC地址的第一对 应关系时, 服务网关控制面装置从网络管理装置接收所述转发面装 置上 ^艮的 MAC地址请求, 并根据第一对应关系和目标 IP地址获取 MAC地址, 通过网络管理装置将 MAC地址请求响应发送至转发面 装置。 其中, 网络管理装置可以由软件实现也可以由硬件实现。 示 例性的, 网络管理装置可以是一种网络操作系统, 在该网络操作系 统上运行着若干个控制装置应用。
示例性的, 网络管理装置在接收到转发面装置上报的 GTP 报 文后, 会解析该 GTP ^艮文, 获取其中的 MAC地址请求。 网络管理 装置可以将该 MAC地址请求发送至对应的服务网关控制面装置。示 例性的,网络管理装置发送 MAC地址请求至相应的的服务网关控制 面装置可以有以下两种方式:
1 ) 网络管理装置根据 MAC地址请求所请求的 IP地址确定对 应的服务网关控制面装置,并发送该 MAC地址请求至该对应的服务 网关控制面装置。
可选的, 在网络管理装置上设置有转发面装置的目的 IP 地址 和服务网关控制面的第二对应关系, 其中该服务网关控制面装置用 于控制该转发面装置。网络管理装置从 MAC地址请求中获取所请求 的目的 IP地址, 根据该第二对应关系, 找到对应的服务网关控制面 装置, 将该 MAC地址请求发送至该对应的服务网关控制面装置。 可 选的, 上述的第二对应关系可以保存在网络管理装置中, 也可以是 该网络管理装置从配置数据库中获取的。
2 ) 网络管理装置将该 MAC地址请求的源 MAC地址替换为 自 身的 MAC地址, 并向服务网关控制面装置广播修改后的 MAC地址 请求消息。
其中, 网络管理装置将该 MAC 地址请求的源 MAC 地址替换 为 自身的 MAC 地址是为了服务网关控制面装置能够向网络管理装 置返回相应的 MAC地址。
本发明的实施例提供的报文传输方法, 转发面装置通过将 MAC地址请求发送至相应的服务网关控制面装置, 以使服务网关控 制面装置返回目的转发面装置对应的 MAC地址,并通过该目的转发 面装置将 MAC地址发送至基站,从而使得该基站可以成功获得下一 跳移动核心网络节点的 MAC地址,因此可以让基站发送数据报文至 该移动核心网络节点, 避免由于基站无法获知下一跳移动核心网络 节点的 MAC地址而导致的报文传输失败,提高了接入网向移动核心 网络传输数据报文的成功率。
图 2所示实施例提供的报文传输方法, 可以实现数据报文从移 动接入网向移动核心网 ( OpenFlow网络) 的成功传输的过程, 克服 了现有技术中 由于基站由于没有配置下一跳移动新网络节点的 MAC 地址而导致的无法将数据报文发送至移动核心网的转发面装 置的网关的问题, 从而可以提高在转发面和控制面分离的移动核心 网络的环境中实现从基站向移动核心网传输报文的成功率。
与图 2所示的报文传输方式对应, 下面将从服务网关控制面装 置的角度来对本发明实施例提供的一种报文传输方法进行说明。
本发明的实施例还提供一种报文传输方法, 如图 3所示, 可以 由服务网关控制面装置来实现, 具体的, 本实施例主要针对数据报 文从移动接入网向釆用控制面与转发面分离的移动核心网 (例如: 运用 OpenFlow技术的移动核心网 )传输的过程, 其中, 该报文传输 方法可以包括:
201、服务网关控制面装置接收转发面装置发送的 MAC地址请 求。
示例性的, 上述的服务网关控制面装置可以是硬件实体, 也可 以是软件实体,例如这里的服务网关控制面装置可以是实现 SGW或 PGW等的控制面功能的装置, 并且多个服务网关控制面装置可以设 置在一个硬件实体上。 示例性的, 可以通过 OpenFlow的控制器来实 现; 上述的转发面装置可以为支持 OpenFlow的交换机。 其中, 上述 的 MAC地址请求包括数据 4艮文的目标 IP地址, 具体用于请求该目 标 IP地址对应的 MAC地址。 示例性的, 上述的 MAC地址请求消息 可以为 ARP请求消息, 该 ARP请求消息可以通过 OpenFlow协议发 送, 例如: 封装在 Packet— Out消息, 也可以直接发送。
202、 服务网关控制面装置根据目标 IP地址与 MAC地址的第 一对应关系和目标 IP地址获取 MAC地址。
示例性的, 服务网关控制面装置在接收到转发面装置发送的数 据报文后, 可以解析出该数据报文中的 MAC 地址请求中的目 的 IP 地址, 并可以根据该目的 IP地址获取相应的第一对应关系, 然后根 据第一对应关系和该 MAC地址请求的目的 IP地址, 确定该目 的 IP 地址对应的转发面装置的网关的 IP地址。 其中, 其中, 第一对应关 系可以是预先配置在服务网关控制面装置上的, 也可以服务网关控 制面装置从配置数据库中获取的。 示例性的, 该第一对应关系可以 是服务器 IP 地址与转发面装置的网关的 IP 地址的映射关系表, 本 发明对此不作限制。
203、服务网关控制面装置发送 MAC地址请求响应至转发面装 置, 以便转发面装置转发 MAC地址请求响应至基站。
其中, 上述的 MAC地址请求响应包括 MAC地址。
可选的, 服务网关控制面装置向转发面装置发送第一转发指 示,以便转发面装置接收到该第一转发指示转发面装置转发 MAC地 址请求响应至基站。 其中, 上述的第一转发指示可以使转发流表项。
示例性的, 在转发面装置和服务网关控制面装置之间还可以架 设网络管理装置。 而该网络管理装置可以是软件实现, 也可以是硬 件实体, 并且可以与服务网关控制面装置集成在一个设备上。 在架 设有网络管理装置的网络架构下,转发面装置可以将上报的 M A C地 址请求等信息统一发送至网络管理装置, 由网络管理装置转发至相 应的服务网关控制面装置; 服务网关控制面装置发送至转发面装置 的信息也可以由网络管理装置来转发。 例如, 服务网关控制面装置 接收转发面装置通过所述网络管理装置转发的 MAC 地址请求, 或 者,服务网关控制面装置通过网络管理装置将 MAC地址请求响应转 发至转发面装置。 此外, 网络管理装置还可以根据目标 IP地址和服 务网关控制面的第二对应关系以及目标 IP地址确定 MAC地址请求 , 并将该 MAC地址请求发送至至服务网关控制面装置, 其中, 上述的 第二对应关系可以保存在网络管理装置中, 也可以是该网络管理装 置从配置数据库中获取的。
本发明的实施例提供的报文传输方法, 服务网关控制面装置通 过接收 MAC地址请求 ,并根据该 MAC地址请求中的目的 IP地址与 第一对应关系获取目的转发面装置对应的 MAC地址,并通过转发面 装置将该 MAC地址发送至基站,从而使得该基站可以成功获得下一 跳移动核心网络节点的 MAC地址,因此可以让基站发送数据报文至 该移动核心网络节点, 避免由于基站无法获知下一跳移动核心网络 节点的 MAC地址而导致的报文传输失败,提高了接入网向移动核心 网络传输数据报文的成功率。
下面将示例性的对本发明实施例提供的报文传输方法在具体 场景中从多侧进行介绍。 以下实施例中与上述实施例相关的技术术 语、 概念等的说明可以参照上述的实施例。
以下实施例主要针对数据报文从基站向移动核心网络发送数 据报文的过程, 以及数据报文从移动核心网络向外部网络传输的过 程。 如图 4、 5所示。 根据不同的网络架构, 本发明实施例提供的报 文传输方法的具体实现也可以不同。 示例性的, 在第一种网络架构 中包括转发面装置和服务网关控制面装置, 在第二种网络架构中还 可以在转发面装置和服务网关控制面装置之间设置有网络管理装 置, 其中在第二种网络架构中, 服务网关控制面装置可以是物理设 备, 也可以是运行在网络管理装置上的执行控制设备功能的控制设 备应用。
在网络设备向移动核心网络发送数据报文的过程中, 为了更有 效率的实现数据报文的成功传输, 可以在网络中架设网络管理装置。 具体的示例可以参考图 4所示的实施例。 在图 4 中, 基站为演进型 基站 eNodeB。
如图 4所示:
301、 eNodeB收到 UE的上行数据 4艮文。
示例性的,该上行数据报文的目的 IP地址为服务器的 IP地址, 目的 MAC地址为 eNodeB的 MAC地址。 eNodeB收到该上行数据报 文后,需要将该上行数据报文的 MAC地址换成下一跳的 MAC地址。 由于 eNodeB上没有配置下一跳(即 SGW )的 MAC地址,所以 eNodeB 会广播 ARP消息 , 以获取 SGW的 MAC地址, 其中 ARP消息中带 有 SGW的 IP地址, 可称为 目标 IP地址。
302、 eNodeB广播 ARP请求消息。
示例性的 , eNodeB 广播的 APR请求消息所请求的 IP地址为 移动核心网的网关的 IP地址,并希望能够得到该 IP地址对应的 MAC 地址。 此外, 由于 eNodeB连接有多个转发面装置, eNodeB会广播 ARP消息至转发面装置 1和转发面装置 2 , 其中 ARP请求消息的源 IP地址为 eNodeB的 IP地址,源 MAC地址为 eNodeB的 MAC地址, 目标 IP为下一兆 ( SGW ) 的 IP地址, 目标 MAC地址为全 F (全 F 是协议的规定)。
303、 转发面装置收到 eNodeB广播的 ARP请求消息后, 发送 该 ARP请求消息至网络管理装置。
示例性的, 若移动核心网的服务网关控制面装置和转发面装置 之间釆用 OpenFlow协议, 转发面装置收到 eNodeB 广播的 ARP请 求消息后, 由于没有配置该如何处理该 ARP请求消息的 ^艮文的转发 流表项, 会将该 ARP 请求消息封装在 packet— in 消息中, 并将该 packet— in消息发送给网络管理装置, 以使网络管理装置转发至相应 的服务网关控制面装置。
304、网络管理装置将该 ARP请求转发至服务网关控制面装置。 示例性的, 网络管理装置在收到转发面装置发送的 APR 请求 消息后, 可以根据 ARP请求消息所请求的 IP 找到对应的服务网关 控制面装置, 并把该 ARP请求消息发送至该对应的服务网关控制面 装置。 例如, 当网络管理装置收到转发面装置发送的 packet— in消息 后, 可以从 packet— in 消息中解析出该 ARP请求消息, 网络管理装 置可以将该 ARP请求消息直接发送至服务网关控制面装置, 也可以 将该 ARP请求消息再次封装后发送至服务网关控制面装置, 这里再 次封装所釆用的协议可以是 OpenFlow中相应的协议,也可以是网络 管理装置和服务网关控制面装置之间事先约定的其他协议。
示例性的, 网络管理装置也可以通过广播的方式将从转发面装 置收到的 ARP请求消息发送至相应的服务网关控制面装置。 例如, 网络管理装置在接收到转发面装置发送的 ARP请求消息后, 或者从 转发面装置发送的 packet— in 消息中解析获得 ARP请求消息后, 将 该 ARP请求消息的源地址替换为该网络管理装置的 MAC地址, 再 广播修改后的 APR 请求消息, 以便于服务网关控制面装置可以将 A P R请求消息的响应消息发送至该网络管理装置。
305、服务网关控制面装置发送 ARP响应消息至网络管理装置。 其中 APR响应消息中携带服务网关控制面装置的 MAC地址。 示例性的, 服务网关控制面装置收到 ARP 请求消息后, 将服 务网关控制面装置的 MAC地址携带在 ARP响应消息至网络管理装 置。 服务网关控制面装置也可以将 ARP请求消息进行封装后, 再发 送至网络管理装置, 其中可以釆用 OpenFLow 协议进行封装, 例如 封装在 packet— out消息中, 也可以釆用其他协议进行封装。
示例性的, 服务网关控制面装置发送 ARP 响应消息至转发面 装置 1 , 其中可以通过 Packet— OUT 消息来发送, 其中 ARP 响应消 息中带有上述 MAC地址。 可以在 Packet— OUT消息中携带第一指示 信息至转发面装置 1 , 或者再另外发送第一指示信息至转发面装置 1 ,第一指示信息用于指示将该 ARP响应发送至 eNodeB,其中该第一 指示信息可以是流表项, 如果有多个转发面的话, SGW控制面可以 向转发面装置 2发送第二指示信息, 用于指示转发面装置 2接收到 目的 MAC地址为上述 MAC地址的数据报文的时候, 丟弃该数据报 文, 这样就可以实现 eNodeB 发送到正确的转发面装置上, 第二指 示信息也可以是流表项。
306、 网络管理装置将 APR响应消息发送至转发面装置。
示例性的, 网络管理装置在收到 ARP 响应消息后, 可以先进 行封装, 再发送至转发面装置。 例如网络管理装置将 APR响应消息 封装在 packet— out消息中发送至转发面装置。
307、 转发面装置将收到的 ARP响应消息发送至 eNodeB。
308、 eNodeB緩存 ARP响应消息中的转发面装置的 MAC地址。 其中, 緩存转发面装置的 MAC地址后, 在 eNodeB 上即保存 有转发面装置的 MAC地址和该转发面装置的 IP地址的对应关系, 该转发面装置的 IP地址即为 eNodeB广播的 APR请求消息所请求的 IP地址。
通过 eNodeB緩存转发面装置的 MAC地址,可以使 eNodeB后 续收到相应的上行数据报文时, 可以不再进行 A R P请求来获取转发 面装置的 MAC地址。
309、 eNodeB发送上行数据 文至该 MAC地址对应的转发面 装置。
示例性的, eNodeB可以将上行数据进行 GTP封装后, 发送至 该 MAC地址对应的转发面装置。
示例性的,将 eNodeB广播的 ARP请求消息发送至网络管理装 置的转发面装置可以与该 MAC地址对应的转发面装置为同一设备, 也可以是不同的转发面装置。
本发明的实施例提供的报文传输方法, 通过网络服务网关控制 面装置选择正确的服务网关控制面装置来下发转发面装置的 MAC 地址至网络设备, 可以 eNodeB 成功将上行数据报文发送至转发面 装置, 提高了从移动接入网向移动核心网传输数据报文的成功率。
以下介绍一下移动核心网络向外部网络发送数据报文的方法。 关于本发明实施例提供的报文传输方法在第一种网络架构中 的实现方式, 可以参考图 5。 如图 5所示: 401、 转发面装置向服务网关控制面装置上报 MAC地址请求。 示例性的, 这里的服务网关控制面装置可以是具有 SGW或者
PGW等控制面功能的设备, 一个服务网关控制面装置上可以集成多 种控制 面的功能, 这里的服务网 关控制面装置可以釆用 支持 OpenFlow的控制器来实现。 示例性的, 这里的转发面装置可以为支 持 OpenFlow的交换机。 示例性的, 上述的外部网络可以为企业网络 或 Internet 网络等。 示例性的, 上述的数据报文可以是封装为 GTP 报文的数据报文。
示例性的, 在步骤 401 a , 转发面装置也可以直接向服务网关控 制面装置上报目 的 IP地址。
402、 服务网关控制面装置根据路由选择策略和转发面装置上 才艮的数据 4艮文的目的 IP地址, 确定该目 的 IP 地址对应的外部网络 的网关的 IP地址。
示例性的, 路由选择策略可以是数据报文的目的 IP 地址与外 部网络的网关的 IP地址的映射关系, 其中该路由选择策略可以事先 配置在服务网关控制面装置上, 也可以从其他网络设备上获取。 示 例性的, 服务网关控制面装置可以从转发面装置上报的数据报文中 解析出该数据报文的目的 IP 地址, 然后根据目的 IP地址与外部网 络的网关的 IP地址的映射关系, 获得外部网络的网关的 IP地址。
403、 当服务网关控制面装置未存储外部网络的网关的 IP地址 对应的 MAC地址时,服务网关控制面装置向转发面装置发送指示消 息。
其中, 上述的指示消息用于指示转发面装置广播 MAC地址请 求消息至外部网络的网关以获取外部网络的网关的 MAC地址。
示例性的, 上述的 MAC地址请求消息可以为 ARP请求消息, 该 ARP 请求消息可以通过 OpenFlow 协议发送, 如, 封装在 Packet— Out消息, 也可以直接进行发送。
可选的, 步骤 403之前还包括: 服务网关控制面装置根据外部 网络的网关的 IP地址, 生成 MAC地址请求。 其中, 上述的指示消 息包括 MAC地址请求消息。
可选的, 在服务网关控制面装置收到外部网络的网关的 MAC 地址后, 还可以保存该外部网络的网关的 MAC 地址。 通过上述过 程能够便于服务网关控制面装置今后不必再次指示转发面装置对外 部网络的网关的 MAC地址进行查询, 从而节省了网络资源。
示例性的, 服务网关控制面装置通过指示转发面装置广播其发 送的 MAC地址请求消息, 可以获取外部网络的网关的 MAC地址, 便于后续可以为在步骤 401 上报的数据报文生成相应的流表项, 以 实现数据报文的正确传输。
404a , 转发面装置根据服务网关控制面装置发送的指示消息广 播 MAC 地址请求消息至外部网络的网关以获取外部网络的网关的 MAC地址。
示例性的, 转发面装置接收服务网关控制面装置发送的指示消 息后, 可以根据该指示消息, 将该指示消息中包括的 MAC地址请求 消息广播至外部网络的网关, 从而获取外部网络的网关的 MAC 地 址; 转发面装置也可以根据该指示消息, 生成 MAC地址请求消息, 并广播至外部网络的网关, 从而获取外部网络的网关的 MAC地址。
404b、 外部网络的网关收到 MAC地址请求消息后, 将自身的 MAC地址发送至转发面装置。
404c , 转发面装置将接收到的外部网络的网关的 MAC地址上 报至服务网关控制面装置。
405、 服务网关控制面装置根据转发面装置上报的外部网络的 网关的 MAC 地址, 将数据报文对应的转发流表项下发至转发面装 置。
示例性的, 当服务网关控制面装置收到外部网络的网关的 MAC地址后 , 可以才艮据该 MAC地址 , 生成相应的转发流表项 , 以 便于转发面装置根据该转发流表项, 将数据报文转发至外部网络的 网关。
406、 转发面装置根据转发流表项发送数据报文至外部网络的 网关。
本发明的实施例提供的报文传输方法, 通过服务网关控制面装 置指示转发面装置获取外部网络的网关的 MAC地址,以使服务网关 控制面装置可以成功下发上报的数据报文的转发流表项至转发面装 置, 从而能够使转发面装置根据转发流表项发送数据报文至外部网 络的网关, 成功实现了从移动网络内部向外部网络传输数据报文。
在第二种网络架构中, 转发面装置和服务网关控制面装置之间 设置有网络管理装置, 在移动核心网络向外部网络传输数据报文的 过程中, 转发面装置上与服务网关控制面装置的信息交换将通过网 络管理装置来进行。
示例性的, 在步骤 403 中, 当所述服务网关控制面装置未存储 所述外部网络的网关的 IP地址对应的 MAC地址时, 服务网关控制 面装置通过网络管理装置向转发面装置发送指示消息。
示例性的, 在步骤 404c 中, 转发面装置通过网络管理装置向 服务网关控制面装置上报外部网络的网关的 MAC地址。
示例性的, 在步骤 405 中, 服务网关控制面装置通过网络管理 装置下发数据报文对应的转发流表项至转发面装置。
通过网络管理装置来转发转发面装置与服务网关控制面装置 之间的信息, 有利于简化转发面装置的部署, 转发面装置只需将需 发送给服务网关控制面装置的信息发送至网络管理装置, 网络管理 装置会根据预设的规则转发至相应的服务网关控制面装置, 这样更 有利于控制与转发分离的实现。
同样, 该网络设备也可以是外部网络的网关, 使用图 6所示的 方法, 可以实现从外部网络网关向转发面装置传输下行数据报文, 成功实现了从外部网络向移动核心网发送数据报文。
通过上面的实施例可见, 在釆用控制与转发相分离技术的网络 架构中, 本发明实施例提供的报文传输方法可以分别解决移动核心 网向外部网络发送数据的问题, 移动接入网向移动核心网络发送数 据的问题, 以及外部网络向移动核心网发送数据等问题。 因此, 本 发明提供的报文传输方法可以成功实现移动核心网络向外 (移动接 入网或者外部网络) 的数据报文的传输, 也可以成功实现其他网络 (移动接入网或者外部网络) 向移动核心网络传输数据报文。 示例 性的, 通过本发明以上的几个实施例可知, 将本发明不同实施例提 供的报文传输方法相组合, 即可完成实现数据报文从基站传输到移 动核心网再传输到外部网络, 或者从外部网络传输到移动核心网再 传输到基站。 以上行数据报文为例, 例如用户设备通过基站将数据 报文发送至 Internet 的服务器, 数据报文的传输过程可以如下作为 参考, 其中相关的技术术语、 概念等内容可以参考如上实施例的相 关部分, 此处不做赘述。
1 ) 当 UE需要将数据报文发送至 Internet的服务器时, 首先需 要将该数据报文发送至基站。
2 ) 基站收到 UE发送的数据报文后, 将该数据报文进行封装, 封装为 GTP报文, 并将该 GTP报文发送至转发面装置。 若基站上存 有转发面装置的 IP 地址对应的 MAC 地址时, 即该转发面装置的 MAC地址时, 基站可以直接发送该 GTP报文至相应的转发面装置, 若基站上没有存有转发面装置的 MAC地址时,基站需要获取该转发 面装置的 MAC地址。 其中基站可以通过 ARP请求的方式获取该转 发面装置的 MAC地址。 示例性的, 基站对外广播 ARP请求消息, 该 ARP请求消息所请求的 IP地址即为该转发面装置的 IP地址, 该 ARP请求消息用于指示获取 IP地址为所请求的 IP地址的转发面装 置的 MAC地址。 当转发面装置收到广播的 ARP请求消息后, 由于 无法处理该 ARP 请求消息, 因此需要将该 ARP请求消息发送至服 务网关控制面装置进行处理,当然,转发面装置再这里也可以将 ARP 请求消息发送至网络管理装置, 以便网络管理装置转发到相应的服 务网关控制面装置来进行处理。 服务网关控制面装置在接收到该 ARP请求消息后, 会对该 ARP请求消息进行响应, 返回 ARP请求 消息所请求的 IP 所对应的 MAC地址, 通过该 MAC地址, 可以使 eNodeB找到 MAC地址对应的转发面装置。 而网络管理装置收到该 ARP请求消息后, 可以有两种方式将该 ARP请求发送至对应的服务 网关控制面装置, 其中一种方式是由网络管理装置解析 ARP请求消 息所请求的 IP 地址, 并根据该请求的 IP 地址选择相应的服务网关 控制面装置, 将该 ARP请求发送至相应的服务网关控制面装置; 其 中另一种方式是由网络管理装置向服务网关控制面装置广播 ARP请 求来获得对应的服务网关控制面装置的响应, 当网络管理装置收到 转发面装置发送的 ARP请求消息后, 将 ARP请求的源 MAC地址替 换为网络管理装置的 MAC地址, 之后再进行广播, 这样当相应的服 务网关控制面装置收到该 ARP 请求后, 会将 ARP 响应消息发送至 网络管理装置。 当相应的服务网关控制面装置收到该 ARP请求消息 后, 会对该 ARP 请求消息进行响应, 返回 ARP请求消息所请求的 IP 所对应的 MAC 地址, 通过该 MAC 地址, 可以使 eNodeB 找到 MAC地址对应的转发面装置。 当网络管理装置收到服务网关控制面 装置发送的 MAC地址后, 会将该 MAC地址发送至转发面装置。 当 转发面装置收到该 MAC地址后, 会将 MAC地址发送至 eNodeB。 其中上述 MAC地址从网络管理装置至 eNodeB的传递过程中可能会 进行相应的封装, 例如 GTP封装等。 当 eNodeB收到所请求的 IP地 址对应的 MAC 地址后, 会緩存该 MAC 地址, 同时也记录了该 IP 地址与该 MAC地址的对应关系 , 这样后续就不必再次获取该 IP地 址对应的 MAC地址, 节约了信令开销, 提高了效率。 在 eNodeB获 得了转发面装置 MAC 地址后, 便可以将数据报文发送至转发面装 置。
3 ) 转发面装置将数据报文转发至其他转发面装置。 其中该步 骤为可选的。
4 ) 转发面装置将数据报文发送至 internet的网关。
当转发面装置收到数据报文后, 由于在转发面装置上没有存有 该如何处理该数据报文的转发流表项, 因此转发面装置需要将收到 的数据报文上报至服务网关控制面装置, 例如可以将数据报文封装 在 packet— in消息中发送至网络管理装置, 并由网络管理装置发送至 相应的服务网关控制面装置。 当服务网关控制面装置收到该数据报 文后, 通过解析该数据报文获得该数据报文的目的 IP地址, 并且根 据该目的 IP地址与 internet的网关的 IP地址的对应关系, 即可获知 该数据 4艮文应该发送至哪个 internet的网关。由于服务网关控制面装 置上未存有该 internet的网关的 MAC地址, 因此服务网关控制面装 置还需要从外部获取该 inernet的网关的 MAC地址, 以便于生成转 发流表项并下发至转发面装置, 以使该转发面装置发送该数据报文 至对应的 internet的网关。 作为一种示例, 月良务网关控制面装置可以 指示转发面装置发送 ARP 请求消息来获取 internet 的网关的 MAC 地址。 服务网关控制面装置通过网络管理装置发送指示消息至转发 面装置, 指示转发面装置广播 ARP 请求消息, 以使 ARP 请求消息 可以发送至相应的 internet的网关,以获取该 internet的网关的 MAC 地址。 其中, 转发面装置广播的 ARP请求消息可以是自 己生成, 也 可以是服务网关控制面装置生成并携带在前述的指示消息中发送至 转发面装置的。 Internet的网关收到该 ARP请求消息后,会通过 ARP 响应消息将自身的 MAC地址发送至转发面装置。转发面装置收到该 MAC地址后, 可以通过网络管理装置上报至服务网关控制面装置。 当服务网关控制面装置收到相应的 internet的网关的 MAC地址后, 可以下发指示转发面装置转发至该 internet 的网关的转发流表项至 转发面装置。 转发面装置收到服务网关控制面装置下发的转发流表 项后,可以根据转发流表项将该数据报文发送至相应的 internet的网 关, 之后可以由该 internet 的网关将该数据 4艮文发送至相应的 internet的服务器。至此,完成了数据报文从用户设备至移动核心网, 移动核心网至 internet的传输。
本发明实施例还提供相应的设备来实现本发明实施例提供的 才艮文传输方法。
本发明的实施例提供一种转发面装置, 可以用于实现如图 2、 图 3、 图 4和图 5 所示的实施例中的转发面装置。 本发明实施例提 供的转发面装置所具有的功能、 工作机制、 相关的技术术语、 概念 等内容可以参照图 1 至图 5 所示的实施例。 本发明实施例提供的转 发面装置可以为支持 OpenFlow的交换机。 如图 6所示, 该转发面装 置 5 包括: 第一接收单元 51、 第一转发单元 52、 第二接收单元 53 和第二转发单元 54 , 其中:
第一接收单元 51用于接收基站广播的 MAC地址请求。
其中, 上述的 MAC地址请求包括目标 IP地址, 用于请求目标 IP地址对应的 MAC地址。
第一转发单元 52 用于当转发面装置 6 未保存目标 IP 地址与 MAC地址的第一对应关系时 , 将 MAC地址请求转发至服务网关控 制面装置, 以使服务网关控制面装置根据第一对应关系和目标 IP地 址获取 MAC地址, 发送 MAC地址请求响应至转发面装置。
其中, 上述的 MAC地址请求响应包括 MAC地址。
第二接收单元 53用于接收 MAC地址请求响应。
第二转发单元 54用于转发 MAC地址请求响应至所述基站。 可选的,如图 6所示,该转发面装置 5还包括第三接收单元 55 , 其巾:
第三接收单元 55 用于接收服务网关控制面装置发送的第一转 发指示。
其中, 上述的第一转发指示用于指示转发面装置转发 MAC地 址请求响应至基站。
第二转发单元 54具体用于: 根据第一转发指示, 发送 MAC地 址请求响应至基站。
可选的, 第一转发单元 52具体用于: 转发 MAC地址请求至网 络管理装置,以使网络管理装置将 MAC地址请求转发至服务网关控 制面装置。
可选的, 第二接收单元 53 具体用于: 接收服务网关控制面装 置通过网络管理装置转发的 MAC地址请求响应。
本发明的实施例提供的转发面装置, 转发面装置通过将 MAC 地址请求发送至相应的服务网关控制面装置, 以使服务网关控制面 装置返回目的转发面装置对应的 MAC地址,并通过该目的转发面装 置将 MAC地址发送至基站,从而使得该基站可以成功获得下一跳移 动核心网络节点的 MAC地址,因此可以让基站发送数据 4艮文至该移 动核心网络节点, 避免由于基站无法获知下一跳移动核心网络节点 的 MAC地址而导致的 4艮文传输失败,提高了接入网向移动核心网络 传输数据报文的成功率。
本发明实施例对转发面装置的单元划分, 是一种示例性的说 明, 在实际中可以有多种单元的划分方法来构成本发明实施例的转 发面装置。
本发明的实施例提供一种服务网关控制面装置, 可以用于实现 如图 2、 图 3、 图 4和图 5所示实施例中的服务网关控制面装置。 其 工作机制、 与其他网元的交互、 相关的技术术语、 概念等内容可以 参考图 1 至图 5 所示的实施例。 本发明实施例的服务网关控制面装 置可以是硬件实体, 也可以是软件实现。 示例性的, 服务网关控制 面装置具体可以是 SGW或 PGW等的控制面装置, 并且多个服务网 关控制 面装置可以设置在一个硬件实体上。 例如可以是支持 OpenFlow的控制器。 如图 7所示, 该服务网关控制面装置 6 包括: 接收单元 61、 MAC地址获取单元 62和第一发送单元 63 , 其中: 接收单元 61用于接收 MAC地址请求。
其中, 上述的 MAC地址请求包括目标 IP地址, 用于请求目标 IP地址对应的 MAC地址。
MAC地址获取单元 62用于根据目标 IP地址与 MAC地址的第 一对应关系和目标 IP地址获取 MAC地址。
第一发送单元 63用于发送 MAC地址请求响应至转发面装置, 以便转发面装置转发 MAC地址请求响应至基站。
其中, 上述的 MAC地址请求响应包括 MAC地址。
可选的, 上述的第一对应关系是保存在服务网关控制面装置上 的; 或者, 上述的第一对应关系是服务网关控制面装置从配置数据 库中获取的。 可选的, 如图 7所示, 该服务网关控制面装置 6 , 还包括: 第 二发送单元 64 , 其中:
第二发送单元用 64于发送第一转发指示至转发面装置。
其中, 上述的第一转发指示用于指示转发面装置转发 MAC地 址请求响应至基站。
可选的, 如图 8所示, 该服务网关控制面装置 6 , 还包括: 第 三发送单元 65 , 其中:
第三发送单元 65用于发送第二转发指示至其他转发面装置. 其中, 上述的第二转发指示用于指示其他转发面装置丟弃目 的 MAC地址为 MAC地址的数据 4艮文。
可选的, 接收单元 61 具体用于: 接收转发面装置通过网络管 理装置转发的 MAC地址请求。
可选的, 第一发送单元 63 具体用于: 通过网络管理装置将所 述 MAC地址请求响应转发至转发面装置,以便转发面装置转发 MAC 地址请求响应至基站。
本发明实施例对服务网关控制面装置的单元划分, 是一种示例 性的说明, 在实际中可以有多种单元的划分方法来构成本发明实施 例的服务网关控制面装置。
本发明的实施例提供的服务网关控制面装置, 该服务网关控制 面装置通过接收 MAC地址请求, 并根据该 MAC地址请求中的目的 IP 地址与第一对应关系获取目的转发面装置对应的 MAC 地址, 并 通过转发面装置将该 MAC地址发送至基站,从而使得该基站可以成 功获得下一跳移动核心网络节点的 MAC地址,因此可以让基站发送 数据报文至该移动核心网络节点, 避免由于基站无法获知下一跳移 动核心网络节点的 MAC地址而导致的报文传输失败,提高了接入网 向移动核心网络传输数据报文的成功率。
本发明实施例提供的转发面设备, 可以为支持 OpenFlow的交 换机。 其具体的工作原理与其他网元的交互、 相关的技术术语、 概 念等内容可以参考图 6实施例所示的转发面装置, 此处不做赘述。 示例性的, 如图 9所示, 该转发面设备 7 包括通信单元 71 和 处理器 72 , 其中:
通信单元 71 , 用于与外部网元进行通信.
处理器 72 , 用于:
通过通信单元 71接收基站广播的 MAC地址请求 .
其中, 上述的 MAC地址请求包括目标 IP地址, 用于请求目标 IP地址对应的 MAC地址。
当转发面设备未保存目标 IP地址与 MAC地址的第一对应关系 时,通过通信单元 71将 MAC地址请求转发至服务网关控制面设备, 以使服务网关控制面设备根据第一对应关系和目标 IP 地址获取 MAC地址,通过通信单元 81发送 MAC地址请求响应至转发面设备。
其中, 上述 MAC地址请求响应包括 MAC地址。
通过通信单元 71接收 MAC地址请求响应。
通过通信单元 71转发 MAC地址请求响应至基站。
可选的, 处理器 72还用于通过通信单元 71接收服务网关控制 面设备发送的第一转发指示。
其中, 上述的第一转发指示用于指示转发面装置转发 MAC地 址请求响应至基站。
处理器 72通过通信单元 81转发 MAC地址请求响应至基站具 体用于: 根据第一转发指示, 通过通信单元 71发送 MAC地址请求 响应至基站。
可选的, 处理器 72通过通信单元 81将 MAC地址请求转发至 服务网关控制面设备具体用于: 通过通信单元 71转发 MAC地址请 求至网络管理设备,以使网络管理设备将 MAC地址请求转发至服务 网关控制面设备。
可选的, 处理器 72通过通信单元 81接收 MAC地址请求响应 具体用于: 通过通信单元 81接收服务网关控制面设备通过网络管理 设备转发的 MAC地址请求响应。
本发明实施例对转发面设备的单元划分, 是一种示例性的说 明, 在实际中可以有多种单元的划分方法来构成本发明实施例的转 发面设备。
本发明的实施例提供的转发面设备, 该转发面设备通过将
MAC地址请求发送至相应的服务网关控制面设备, 以使服务网关控 制面设备返回目的转发面设备对应的 MAC地址,并通过该目的转发 面装置将 MAC地址发送至基站,从而使得该基站可以成功获得下一 跳移动核心网络节点的 MAC地址,因此可以让基站发送数据报文至 该移动核心网络节点, 避免由于基站无法获知下一跳移动核心网络 节点的 MAC地址而导致的报文传输失败,提高了接入网向移动核心 网络传输数据报文的成功率。
本发明实施例提供的服务网关控制面设备, 可以是硬件实体, 也可以是软件实现。 示例性的, 服务网关控制面设备具体可以是 SGW或 PGW等的控制面设备, 并且多个服务网关控制面设备可以 设置在一个硬件实体上。 例如可以是支持 OpenFlow的控制器。 其具 体的工作原理与其他网元的交互、 相关的技术术语、 概念等内容可 以参考图 7或者图 8 实施例所示的服务网关控制面装置, 此处不做 赘述。
示例性的, 如图 10所示,
该服务网关控制面设备 8 包括: 通信单元 81和处理器 82 , 其 中:
通信单元 81 , 用于与外部网元进行通信。
处理器 82 , 用于:
通过通信单元 81接收转发面设备发送的 MAC地址请求.
其中, 上述的 MAC地址请求包括目标 IP地址, 用于请求目标 IP地址对应的 MAC地址。
根据目标 IP地址与 MAC地址的第一对应关系和目标 IP地址 获取 MAC地址。
通过通信单元 81发送 MAC地址请求响应至转发面设备,以便 转发面设备通过通信单元 81转发 MAC地址请求响应至基站。 其中。 上述的 MAC地址请求响应包括 MAC地址。
可选的, 上述的第一对应关系是保存在服务网关控制面设备上 的; 或者, 上述的第一对应关系是服务网关控制面设备从配置数据 库中获取的。
可选的, 上述的处理器 82还用于通过通信单元 81发送第一转 发指示至转发面装置。
其中, 上述的第一转发指示用于指示转发面装置转发 MAC地 址请求响应至基站。
可选的, 处理器 82还用于通过通信单元 81发送第二转发指示 至其他转发面设备。
其中, 上述的第二转发指示用于指示其他转发面设备丟弃目 的 MAC地址为 MAC地址的数据 4艮文。
可选的, 处理器 82 通过通信单元 81 接收转发面设备发送的 MAC 地址请求具体用于: 通过通信单元 81 接收转发面设备通过网 络管理设备转发的 MAC地址请求。
可选的, 处理器 82通过通信单元 81发送 MAC地址请求响应 至转发面设备, 以便转发面设备通过通信单元 81转发 MAC地址请 求响应至基站具体用于:通过网络管理设备将 MAC地址请求响应通 过通信单元 81转发至转发面设备, 以便转发面设备转发 MAC地址 请求响应至基站。
本发明实施例对服务网关控制面设备的单元划分, 是一种示例 性的说明, 在实际中可以有多种单元的划分方法来构成本发明实施 例的服务网关控制面设备。
本发明的实施例提供的服务网关控制面设备, 该服务网关控制 面设备通过接收 MAC地址请求, 并根据该 MAC地址请求中的目的 IP 地址与第一对应关系获取目的转发面设备对应的 MAC 地址, 并 通过转发面设备将该 MAC地址发送至基站,从而使得该基站可以成 功获得下一跳移动核心网络节点的 MAC地址,因此可以让基站发送 数据报文至该移动核心网络节点, 避免由于基站无法获知下一跳移 动核心网络节点的 MAC地址而导致的报文传输失败,提高了接入网 向移动核心网络传输数据报文的成功率。
本发明实施例提供的服务网关控制面装置和转发面装置还可 以构成通信系统, 以实现如图 2至图 5 所示实施例提供的报文传输 方法。 示例性的, 如图 1 1 所示, 该通信系统 9包括: 服务网关控制 面装置 91 及转发面装置 92。 其中, 该服务网关控制面装置 91 , 可 以是如图 7或图 8所示的服务网关控制面装置; 该转发面装置 92 , 可以是如图 9所示的转发面装置。
转发面装置 92 用于接收基站广播的 MAC 地址请求, 并转发 MAC地址请求。 其中, 该 MAC地址请求包括目标 IP地址, 用于请 求目标 IP地址对应的 MAC地址 , 该转发面装置 92 未保存目标 IP 地址与 MAC地址的第一对应关系。
服务网关控制面装置 91用于接收转发面装置转发的 MAC地址 请求 , 根据第一对应关系和目标 IP地址获取 MAC地址 , 发送 MAC 地址请求响应。 其中, 该 MAC地址请求响应包括 MAC地址。
转发面装置 92还用于接收 MAC地址请求响应 , 转发 MAC地 址请求响应至基站。
可选的, 服务网关控制面装置 91 上保存有第一对应关系; 或 者, 服务网关控制面装置 91 还用于从配置数据库获取第一对应关 系。
可选的, 服务网关控制面装置 91 还用于发送第一转发指示至 转发面装置 92。 其中, 该第一转发指示用于指示转发面装置 92 转 发 MAC地址请求响应至基站。 转发面装置 92具体用于根据第一转 发指示, 发送 MAC地址请求响应至基站。
可选的, 如图 12所示, 该通信系统 9还包括其他转发面装置 93 , 服务网关控制面装置 91还用于发送第二转发指示至其他转发面 装置 93 , 其中, 该第二转发指示用于指示其他转发面装置丟弃目的 MAC地址为 MAC地址的数据 4艮文。
可选的, 如图 12、 13 所示, 该通信系统 9还包括: 网络管理 装置 94 , 转发面装置 92具体用于转发 MAC地址请求至网络管理装 置 94。 网络管理装置 94用于接收转发面装置 92转发的 MAC地址 请求, 发送 MAC地址请求至服务网关控制面装置 91。
进一步可选的, 如图 12所示, 当该通信系统 9还包括其他控 制面装置 95 时, 网络管理装置 94具体用于向服务网关控制面装置 91和其他控制面装置 95广播 MAC地址请求。
可选的, 网络管理装置 94具体用于根据目标 IP地址和服务网 关控制面的第二对应关系以及目标 IP地址 , 发送 MAC地址请求至 服务网关控制面装置 91。
进一步可选的, 网络管理装置 94保存有第二对应关系; 或者, 网络管理装置 94用于从配置数据库获取第二对应关系。
可选的, 网络管理装置 94还用于从服务网关控制面装置 91接 收 MAC地址请求响应, 发送 MAC地址请求响应至转发面装置 92。
本发明的实施例提供的通信系统, 转发面装置将基站广播的 MAC地址请求转发至服务网关控制面装置, 以便该服务网关控制面 装置根据该 MAC地址请求中的目的 IP地址与第一对应关系, 以获 取该目标 IP地址对应的 MAC地址, 并将该 MAC地址发送至基站, 从而使得该基站可以成功获得下一跳移动核心网络节点的 MAC 地 址, 因此可以让基站发送数据报文至该移动核心网络节点, 避免由 于基站无法获知下一跳移动核心网络节点的 MAC 地址而导致的才艮 文传输失败, 提高了接入网向移动核心网络传输数据报文的成功率。
本发明实施例提供的服务网关控制面设备和转发面设备还可 以构成通信系统, 以实现如图 2至图 5 所示实施例提供的报文传输 方法。 示例性的, 如图 14所示, 该通信系统 S 10包括: 服务网关控 制面设备 S 101及转发面设备 S 102。其中,服务网关控制面设备 S 101 可以是如图 10所示的服务网关控制面设备; 该转发面设备 S 102可 以是如图 9所示的转发面设备。
转发面设备 S 102用于接收基站广播的 MAC地址请求,并转发 MAC地址请求。 其中, 该 MAC地址请求包括目标 IP地址, 用于请 求目标 IP地址对应的 MAC地址,该转发面设备 S10292未保存目标 IP地址与 MAC地址的第一对应关系。
服务网关控制面设备 S101 用于接收转发面设备 S102 转发的 MAC地址请求 , 根据第一对应关系和目标 IP地址获取 MAC地址 , 发送 MAC地址请求响应。 其中, 该 MAC地址请求响应包括 MAC 地址。
转发面设备 S 102还用于接收 MAC地址请求响应, 转发 MAC 地址请求响应至基站。
可选的, 服务网关控制面设备 S101 上保存有第一对应关系; 或者,服务网关控制面设备 S101还用于从配置数据库获取第一对应 关系。
可选的, 服务网关控制面设备 S101 还用于发送第一转发指示 至转发面设备 S102。 其中, 该第一转发指示用于指示转发面设备 S 10292转发 MAC地址请求响应至基站。 转发面设备 S 102具体用于 根据第一转发指示, 发送 MAC地址请求响应至基站。
可选的, 如图 15 所示, 该通信系统 S10还包括其他转发面设 备 S103, 服务网关控制面设备 S101 还用于发送第二转发指示至其 他转发面设备 S103。 其中, 该第二转发指示用于指示其他转发面设 备 S102丟弃目的 MAC地址为 MAC地址的数据报文。
可选的, 如图 14、 15、 16所示, 该通信系统 S 10还包括: 网 络管理设备 S104, 转发面设备 S 102具体用于转发 MAC地址请求至 网络管理设备 S104。网络管理装置 S104用于接收转发面设备 S 10292 转发的 MAC地址请求, 发送 MAC地址请求至服务网关控制面设备 S10191。
进一步可选的, 如图 16所示, 当该通信系统 S10还包括其他 控制面设备 S105 时, 网络管理装置 S104具体用于向服务网关控制 面设备 S101和其他控制面设备 S105广播 MAC地址请求。
可选的, 网络管理设备 S104具体用于根据目标 IP地址和服务 网关控制面的第二对应关系以及目标 IP地址, 发送 MAC地址请求 至服务网关控制面设备 S 101。
进一步可选的, 网络管理设备 S 104保存有第二对应关系; 或 者, 网络管理设备 S 104用于从配置数据库获取第二对应关系。
可选的, 网络管理设备 S 104 还用于从服务网关控制面设备 S 10191接收 MAC地址请求响应 ,发送 MAC地址请求响应至转发面 设备 S 10292。
本发明的实施例提供的通信系统, 转发面设备 S 102 将基站广 播的 MAC地址请求转发至服务网关控制面设备 S 101 , 以便该服务 网关控制面设备 S 101根据该 MAC地址请求中的目的 IP地址与第一 对应关系 , 以获取该目标 IP 地址对应的 MAC 地址, 并将该 MAC 地址发送至基站, 从而使得该基站可以成功获得下一跳移动核心网 络节点的 MAC地址,因此可以让基站发送数据 4艮文至该移动核心网 络节点,避免由于基站无法获知下一跳移动核心网络节点的 MAC地 址而导致的报文传输失败, 提高了接入网向移动核心网络传输数据 报文的成功率。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的设备 和方法, 可以通过其它的方式实现。 例如, 以上所描述的设备实施 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。
另外, 在本发明各个实施例中的设备和系统中, 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包括, 也可 以两个或两个以上单元集成在一个单元中。 且上述的各单元既可以 釆用硬件的形式实现, 也可以釆用硬件加软件功能单元的形式实现。
实现上述方法实施例的全部或部分步骤可以通过程序指令相 关的硬件来完成, 前述的程序可以存储于一计算机可读取存储介质 中, 该程序在执行时, 执行包括上述方法实施例的步骤; 而前述的 存储介质包括: U盘、 移动硬盘、 只读存储器 ( Read Only Memory , 简称 ROM )、随机存取存储器( Random Access Memory ,简称 RAM )、 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 书
1、 一种通信系统, 其特征在于, 包括: 位于核心网的转发面装 置和服务网关控制面装置;
所述转发面装置用于接收基站广播的 MAC地址请求,并转发所 述 MAC地址请求; 其中, 所述 MAC地址请求包括目标 IP地址, 用 于请求所述目标 IP地址对应的 MAC地址,所述转发面装置未保存所 述目标 IP地址与所述 MAC地址的第一对应关系;
所述服务网关控制面装置用于接收所述转发面装置转发的所述 MAC地址请求, 根据所述第一对应关系和所述目标 IP地址获取所述 MAC地址, 发送 MAC地址请求响应; 其中所述 MAC地址请求响应 包括所述 MAC地址;
所述转发面装置还用于接收所述 MAC地址请求响应,转发所述 MAC地址请求响应至所述基站。
2、 根据权利要求 1所述的通信系统, 其特征在于,
所述服务网关控制面装置上保存有所述第一对应关系; 或者, 所述服务网关控制面装置还用于从配置数据库获取所述第一对 应关系。
3、 根据权利要求 1或 2所述的通信系统, 其特征在于, 所述服务网关控制面装置还用于发送第一转发指示至所述转发 面装置; 其中所述第一转发指示用于指示所述转发面装置转发所述 MAC地址请求响应至所述基站;
所述转发面装置具体用于根据所述第一转发指示, 发送所述 MAC地址请求响应至所述基站。
4、 根据权利要求 1至 3任一项所述的通信系统, 其特征在于, 所述系统还包括其他转发面装置;
所述服务网关控制面装置还用于发送第二转发指示至所述其他 转发面装置; 其中, 所述第二转发指示用于指示所述其他转发面装置 丟弃目的 MAC地址为所述 MAC地址的数据 4艮文。
5、 根据权利要求 1至 4任一项所述的通信系统, 其特征在于, 所述系统还包括网络管理装置;
所述转发面装置具体用于转发所述 MAC 地址请求至所述网络 管理装置;
所述网络管理装置用于接收所述转发面装置转发的 MAC 地址 请求, 发送所述 MAC地址请求至所述服务网关控制面装置。
6、 根据权利要求 5所述的通信系统, 其特征在于, 所述系统还 包括其他控制面装置;
所述网络管理装置具体用于向所述服务网关控制面装置和所述 其他控制面装置广播所述 MAC地址请求。
7、 根据权利要求 5所述的通信系统, 其特征在于,
所述网络管理装置具体用于根据所述目标 IP地址和所述服务网 关控制面的第二对应关系以及所述目标 IP地址,发送所述 MAC地址 请求至所述服务网关控制面装置。
8、 根据权利要求 7所述的通信系统, 其特征在于,
所述网络管理装置保存有所述第二对应关系; 或者,
所述网络管理装置用于从配置数据库获取所述第二对应关系。
9、 根据权利要求 5至 8任一项所述的通信系统, 其特征在于, 所述网络管理装置还用于从所述服务网关控制面装置接收所述
MAC地址请求响应,发送所述 MAC地址请求响应至所述转发面装置。
10、 一种转发面装置, 其特征在于, 包括:
第一接收单元用于接收基站广播的 MAC 地址请求; 其中所述 MAC地址请求包括目标 IP地址 , 用于请求所述目标 IP地址对应的 MAC地址;
第一转发单元用于当所述转发面装置未保存所述目标 IP地址与 所述 MAC地址的第一对应关系时, 将所述 MAC地址请求转发至服 务网关控制面装置, 以使所述服务网关控制面装置根据所述第一对应 关系和所述目标 IP地址获取所述 MAC地址, 发送 MAC地址请求响 应至所述转发面装置; 其中所述 MAC 地址请求响应包括所述 MAC 地址; 第二接收单元用于接收所述 MAC地址请求响应;
第二转发单元用于转发所述 MAC地址请求响应至所述基站。
11、 根据权利要求 10所述的转发面装置, 其特征在于: 第三接收单元用于接收所述服务网关控制面装置发送的第一转 发指示; 其中所述第一转发指示用于指示所述转发面装置转发所述 MAC地址请求响应至所述基站;
所述第二转发单元具体用于: 根据所述第一转发指示, 发送所 述 MAC地址请求响应至所述基站。
12、 根据权利要求 10或 11所述的转发面装置, 其特征在于: 所述第一转发单元具体用于:转发所述 MAC地址请求至所述网 络管理装置, 以使所述网络管理装置将所述 MAC地址请求转发至所 述服务网关控制面装置。
13、 根据权利要求 10至 12任一项所述的转发面装置, 其特征 在于:
所述第二接收单元具体用于: 接收所述服务网关控制面装置通 过所述网络管理装置转发的所述 MAC地址请求响应。
14、 一种服务网关控制面装置, 其特征在于, 包括:
接收单元用于接收 MAC地址请求; 其中所述 MAC地址请求包 括目标 IP地址 , 用于请求所述目标 IP地址对应的 MAC地址;
MAC地址获取单元用于根据所述目标 IP地址与所述 MAC地址 的第一对应关系和所述目标 IP地址获取所述 MAC地址;
第一发送单元用于发送 MAC地址请求响应至所述转发面装置, 以便所述转发面装置转发所述 MAC地址请求响应至所述基站; 其中 所述 MAC地址请求响应包括所述 MAC地址。
15、根据权利要求 14所述的服务网关控制面装置,其特征在于: 所述第一对应关系是保存在所述服务网关控制面装置上的; 或 者, 所述第一对应关系是所述服务网关控制面装置从配置数据库中获 取的。
16、 根据权利要求 14或 15 所述的服务网关控制面装置, 其特 征在于, 所述服务网关控制面装置, 还包括:
第二发送单元用于发送第一转发指示至所述转发面装置; 其中 所述第一转发指示用于指示所述转发面装置转发所述 MAC地址请求 响应至所述基站。
17、 根据权利要求 14或 15 所述的服务网关控制面装置, 其特 征在于, 所述服务网关控制面装置, 还包括:
第三发送单元用于发送第二转发指示至其他转发面装置; 其中, 所述第二转发指示用于指示所述其他转发面装置丟弃目的 MAC地址 为所述 MAC地址的数据 ^艮文。
18、 根据权利要求 14至 17任一项所述的服务网关控制面装置, 其特征在于:
所述接收单元具体用于: 接收所述转发面装置通过所述网络管 理装置转发的所述 MAC地址请求。
19、 根据权利要求 14至 18任一项所述的服务网关控制面装置, 其特征在于:
所述第一发送单元具体用于: 通过所述网络管理装置将所述 MAC 地址请求响应转发至所述转发面装置, 以便所述转发面装置转 发所述 MAC地址请求响应至所述基站。
20、 一种 文传输方法, 其特征在于, 包括:
转发面装置接收基站广播的 MAC地址请求; 其中所述 MAC地 址请求包括目标 IP地址 , 用于请求所述目标 IP地址对应的 MAC地 址;
当所述转发面装置未保存所述目标 IP地址与所述 MAC地址的 第一对应关系时, 所述转发面装置将所述 MAC地址请求转发至服务 网关控制面装置, 以使所述服务网关控制面装置根据所述第一对应关 系和所述目标 IP地址获取所述 MAC地址 , 发送 MAC地址请求响应 至所述转发面装置; 其中所述 MAC地址请求响应包括所述 MAC地 址;
所述转发面装置接收所述 MAC地址请求响应; 所述转发面装置转发所述 MAC地址请求响应至所述基站。
21、 根据权利要求 20所述的方法, 其特征在于,
所述方法还包括: 所述转发面装置接收所述服务网关控制面装 置发送的第一转发指示; 其中所述第一转发指示用于指示所述转发面 装置转发所述 MAC地址请求响应至所述基站;
所述转发面装置转发所述 MAC 地址请求响应至所述基站具体 包括: 所述转发面装置根据所述第一转发指示, 发送所述 MAC地址 请求响应至所述基站。
22、 根据权利要求 20或 21 所述的方法, 其特征在于, 所述转 发面装置将所述 MAC 地址请求转发至服务网关控制面装置具体包 括:
所述转发面装置转发所述 MAC地址请求至所述网络管理装置, 以使所述网络管理装置将所述 MAC地址请求转发至所述服务网关控 制面装置。
23、 根据权利要求 20至 22任一项所述的方法, 其特征在于, 所述转发面装置接收所述 MAC地址请求响应具体用于:
所述转发面装置接收所述服务网关控制面装置通过所述网络管 理装置转发的所述 MAC地址请求响应。
24、 一种 文传输方法, 其特征在于, 包括:
服务网关控制面装置接收 MAC地址请求; 其中所述 MAC地址 请求包括目标 IP地址 , 用于请求所述目标 IP地址对应的 MAC地址; 所述服务网关控制面装置根据所述目标 IP地址与所述 MAC地 址的第一对应关系和所述目标 IP地址获取所述 MAC地址;
所述服务网关控制面装置发送 MAC 地址请求响应至所述转发 面装置, 以便所述转发面装置转发所述 MAC地址请求响应至所述基 站; 其中所述 MAC地址请求响应包括所述 MAC地址。
25、 根据权利要求 24所述的方法, 其特征在于:
所述第一对应关系是保存在所述服务网关控制面装置上的; 或 者, 所述第一对应关系是所述服务网关控制面装置从配置数据库中获 取的。
26、 根据权利要求 24或 25 所述的方法, 其特征在于, 所述方 法还包括:
所述服务网关控制面装置发送第一转发指示至所述转发面装 置; 其中所述第一转发指示用于指示所述转发面装置转发所述 MAC 地址请求响应至所述基站。
27、 根据权利要求 24或 25 所述的方法, 其特征在于, 所述方 法还包括:
所述服务网关控制面装置发送第二转发指示至其他转发面装 置; 其中, 所述第二转发指示用于指示所述其他转发面装置丟弃目的 MAC地址为所述 MAC地址的数据 4艮文。
28、 根据权利要求 24至 27任一项所述的方法, 其特征在于, 所述服务网关控制面装置接收转发面装置发送的 MAC地址请求具体 包括:
所述服务网关控制面装置接收所述转发面装置通过所述网络管 理装置转发的所述 MAC地址请求。
29、 根据权利要求 24至 28任一项所述的方法, 其特征在于, 所述服务网关控制面装置发送 MAC 地址请求响应至所述转发面装 置, 以便所述转发面装置转发所述 MAC地址请求响应至所述基站具 体包括:
所述服务网关控制面装置通过所述网络管理装置将所述 MAC 地址请求响应转发至所述转发面装置, 以便所述转发面装置转发所述 MAC地址请求响应至所述基站。
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EP3598703A1 (en) 2020-01-22
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CN104995878A (zh) 2015-10-21
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