WO2015070681A1 - 接入网虚拟化的方法及代理节点 - Google Patents

接入网虚拟化的方法及代理节点 Download PDF

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Publication number
WO2015070681A1
WO2015070681A1 PCT/CN2014/088348 CN2014088348W WO2015070681A1 WO 2015070681 A1 WO2015070681 A1 WO 2015070681A1 CN 2014088348 W CN2014088348 W CN 2014088348W WO 2015070681 A1 WO2015070681 A1 WO 2015070681A1
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WIPO (PCT)
Prior art keywords
node
remote access
access node
parameter information
packet
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PCT/CN2014/088348
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English (en)
French (fr)
Inventor
郑若滨
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP14862035.4A priority Critical patent/EP3059904B1/en
Priority to ES14862035T priority patent/ES2720750T3/es
Priority to EP18208048.1A priority patent/EP3528437B1/en
Publication of WO2015070681A1 publication Critical patent/WO2015070681A1/zh
Priority to US15/153,431 priority patent/US10116620B2/en
Priority to US16/140,797 priority patent/US10728214B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/25—Mapping addresses of the same type
    • H04L61/2503—Translation of Internet protocol [IP] addresses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H04L12/2869—Operational details of access network equipments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0803—Configuration setting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/74—Address processing for routing
    • H04L45/745—Address table lookup; Address filtering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H04L67/563—Data redirection of data network streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2212/00—Encapsulation of packets

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and an agent node for access network virtualization.
  • the optical fiber access network is an access network with optical fiber as the main transmission medium. It is divided into an active optical access network and a passive optical access network from the system allocation.
  • the passive optical access network is located according to the optical network unit. Location can be divided into FTTH (Fiber To The Home), FTTB (Fiber To The Building), FTTC (Fiber To The Curb), FTTN (Fiber To The Node), FTTN (Fiber To The Node) Node) and FTTDp (Fiber to Drop/Distribution Point, fiber to distribution point) and other types.
  • Passive optical network technology is a point-to-multipoint optical access network technology. It consists of an OLT (Optical Line Terminal), an ONU (Optical Network Unit), or an ONT (Optical Network Terminal).
  • MDUs Multi-Dwelling Units
  • MTUs Multi-Tenant Units
  • MxUs are usually box-type devices.
  • FTTDp is a new type of access network. It is to lay fiber to the external wall of the family house. The last distance to the home is still connected by the copper or wireless interface that has already been installed, and every user in the FTTH type needs to be laid. Compared to fiber optics, it reduces costs.
  • the DPU Drop Point Unit
  • the DPU is an ONU under the FTTDp type, usually a box device, and the number of DPUs is the same order of magnitude as the home gateway.
  • the prior art has at least the following problems: since the DPU and the MxU have different structures and a large number, the operation and maintenance management is complicated, so if the operator wants to join the FTTDp type access in the original network. For the network node, you need to modify the management system. Modifying the management system will increase the cost of operation and maintenance, interrupt the existing services of a large number of access network users, affect the user's use of the network, and bring inconvenience to users.
  • the embodiments of the present invention provide a method for activating the access network and a proxy node, which can reduce the problem that the existing management system needs to be modified when a new type of access network node is added to the original access network.
  • an embodiment of the present invention provides a method for virtualizing an access network, including:
  • the proxy node establishes a relationship mapping table, where the relationship mapping table includes a mapping relationship between a network protocol IP address of the virtual access node AN, a virtual AN user-side port, and a remote-side access node user-side port, where the virtual AN is a device that can be managed by the management system;
  • the first parameter information includes the virtual AN user side port and a destination IP address, and the destination IP address is an IP address of the virtual AN;
  • the second parameter information includes a user side port of the remote access node.
  • the proxy node includes at least a first node and a second node, where the first node establishes the relationship mapping table, receives the packet, and queries according to the first parameter information carried in the packet.
  • the relationship mapping table obtains the second parameter information, and sends the second parameter information to the second node;
  • the method further includes:
  • mapping relationship between the relationship mapping table further includes the remote access node identifier ID;
  • the first parameter information includes the virtual AN user side port and the IP address of the virtual AN, and the second parameter information includes the remote access node ID and the remote access node user side port;
  • the first node modifies the virtual AN user-side port in the packet to the user-side port of the remote access node, and forwards the packet to the second node, the packet Carrying the remote access node ID and the user port of the remote access node;
  • Sending, by the second node, the packet to the remote access node corresponding to the second parameter information according to the second parameter information including:
  • the second node encapsulates the packet sent by the first node into a frame, adds the remote access node ID to the frame, and sends the message to a corresponding remote access node. frame.
  • the sending, according to the second parameter information, the packet to the remote access node corresponding to the second parameter information includes: :
  • the access node identifier ID is obtained by querying the relationship mapping table according to the virtual AN user-side port and the IP address of the virtual AN, and the mapping relationship between the relationship mapping table further includes the remote access node identifier ID.
  • the frame is sent to a corresponding remote access node.
  • mapping relationship of the relationship mapping table further includes an IP address of the remote access node
  • the second parameter information further includes an IP address of the remote access node.
  • the packet is encapsulated into a frame, and before the remote access node identifier ID is added in the frame, the method further includes :
  • the mapping relationship of the relationship mapping table further includes a proxy node user side port
  • the second parameter information further includes a proxy node user. Side port.
  • the proxy node corresponds to at least two of the remote access nodes.
  • an embodiment of the present invention provides a proxy node, including:
  • the establishing unit is configured to establish a relationship mapping table, where the relationship mapping table includes a mapping relationship between a network protocol IP address of the virtual access node AN, a virtual AN user side port, and a user port of the remote access node, where the virtual AN is a device that the management system can manage;
  • a receiving unit configured to receive a packet sent by the management system
  • a querying unit configured to query the relationship mapping table established by the establishing unit according to the first parameter information carried by the receiving unit, to obtain second parameter information
  • a sending unit configured to send the packet to the remote access node corresponding to the second parameter information according to the second parameter information that is queried by the query unit.
  • the first parameter information includes the virtual AN user side port and a destination IP address, and the destination IP address is an IP address of the virtual AN;
  • the second parameter information includes a user side port of the remote access node.
  • the proxy node includes at least a first node and a second node, where the first node establishes the relationship mapping table, receives the packet, and queries according to the first parameter information carried in the packet.
  • the relationship mapping table obtains the second parameter information, and sends the second parameter information to the second node;
  • the end access node sends the message.
  • the proxy node further includes:
  • a modifying unit configured to modify, by the receiving unit, the virtual AN user-side port in the packet to be the remote-access node user-side port obtained by the querying unit.
  • mapping relationship between the relationship mapping table further includes the remote access node identifier ID;
  • the first parameter information includes the virtual AN user side port and the IP address of the virtual AN, and the second parameter information includes the remote access node ID and the remote access node user side port;
  • the first node modifies the virtual AN user-side port in the packet to the user-side port of the remote access node, and forwards the packet to the second node, the packet Carrying the remote access node ID and the user port of the remote access node;
  • Sending, by the second node, the packet to the remote access node corresponding to the second parameter information according to the second parameter information including:
  • the second node encapsulates the packet sent by the first node into a frame, adds the remote access node ID to the frame, and sends the message to a corresponding remote access node. frame.
  • the sending unit includes:
  • An encapsulating subunit configured to encapsulate the packet modified by the modifying unit into a frame, and add a remote access node identifier ID in the frame, where the remote access node identifier ID is connected according to the remote end
  • the ingress user side port is obtained, or the remote access node identifier ID is obtained by querying the relationship mapping table according to the virtual AN user side port and the virtual AN's IP address, and the mapping relationship of the relationship mapping table is obtained. Also including the remote access node identification ID;
  • a sending subunit configured to send the frame of the encapsulation subunit encapsulation to a corresponding remote access node.
  • mapping relationship of the relationship mapping table further includes an IP address of the remote access node
  • the second parameter information further includes an IP address of the remote access node.
  • the modifying unit is further configured to modify, by using the query unit, the destination IP address in the packet received by the receiving unit The IP address of the remote access node.
  • the mapping relationship of the relationship mapping table further includes a proxy node user side port
  • the second parameter information further includes a proxy node user. Side port.
  • the proxy node corresponds to at least two remote access nodes.
  • a method and a proxy node for access network virtualization according to an embodiment of the present invention, and when a new type (for example, FTTDp) access network node (that is, a remote access node) is added to the original network, Compared with the problem of increasing the operation and maintenance cost of the existing operation and maintenance support system, the relationship mapping table is set on the proxy node in the present invention, and the relationship mapping table includes the IP address of the virtual AN and the virtual AN user side.
  • FTTDp FTTDp
  • the virtual AN is a device that can be managed by the management system; after receiving the packet sent by the management device, the proxy node queries the relationship mapping table according to the content of the packet; Sending the packet to the corresponding remote access node according to the query result.
  • a plurality of remote access nodes may be virtualized into one virtual AN. Since the operator manages and controls the virtual AN as a unit, and no longer directly manages and maintains a large number of remote access nodes, Greatly reduce the operation and maintenance costs.
  • FIG. 1 is a network architecture diagram according to an embodiment of the present invention
  • FIG. 3 is a network architecture diagram according to another embodiment of the present invention.
  • FIG. 8 and FIG. 9 are schematic diagrams showing the structure of a proxy node according to another embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a proxy node according to another embodiment of the present invention.
  • the proxy node is only described by taking an OLT and an IP edge node as an example.
  • the proxy node may also be other types of nodes, such as a sink node, where the proxy is not The specific type of node is qualified.
  • the technical solution provided by the embodiment of the present invention may be used for accessing a network, where the access network includes a remote access node, a proxy node, and a management system.
  • the remote access node may be an ONU, an ONT, a DPU, an MxU, a DSLAM (Digital Subscriber Line Access Multiplexer), a switch, or a CMTS (Cable Modem Terminal Systems).
  • the proxy node may be an OLT, a DSLAM, an IP (Internet Protocol) edge node, a switch, a router, etc.
  • the remote access node and the proxy node may be a DSL (Digital) Subscriber Line, digital subscriber line), Ethernet (Ethernet), PON (Passive Optical Network) and other access methods for data transmission
  • management system can be routers, servers, etc., which can pass messages and The proxy node performs data transmission.
  • An embodiment of the present invention provides a method for virtualizing an access network, as shown in FIG.
  • a point (usually a miniaturized device) is virtualized as an access node that can be identified by the management system, that is, a virtual AN.
  • the operator sets a virtual AN (Access Node) proxy to press the remote access node.
  • the virtual AN performs control and management.
  • a virtual AN (Access Node) proxy can be set at the proxy node, and the operator network management or management system controls and manages the remote access node through the virtual AN proxy, as shown in FIG. 2 .
  • the method includes:
  • the proxy node establishes a relationship mapping table.
  • the relationship mapping table includes a mapping relationship between a network protocol IP address of the virtual access node AN, a virtual AN user-side port, and a remote-side access node user-side port, where the virtual AN is a device that can be managed by the management system.
  • the mapping relationship of the relationship mapping table may further include an IP address of the remote access node.
  • the proxy node receives the packet sent by the management system.
  • the packet carries the virtual AN user-side port and the destination IP address, and the destination IP address is the IP address of the virtual AN.
  • the proxy node queries the relationship mapping table according to the first parameter information carried in the packet, and obtains the second parameter information.
  • the first parameter information includes a virtual AN user side port and a destination IP address; and the second parameter information includes a remote access node user side port.
  • the proxy node queries the relationship mapping table according to the virtual AN user-side port and the IP address of the virtual AN, and obtains the user-side port of the remote access node, and modifies the virtual AN user-side port in the packet to the user side of the remote access node. port.
  • the second parameter information includes the IP address of the remote access node, and the destination of the packet is also modified when the packet is modified.
  • the IP address is changed to the IP address of the remote access node.
  • the proxy node sends a packet to the remote access node corresponding to the second parameter information according to the second parameter information.
  • the proxy node encapsulates the packet into a frame, and adds a remote access node ID (Identity, Identification number), and then send a frame to the corresponding remote access node.
  • a remote access node ID Identity, Identification number
  • the remote access node ID is obtained according to the user side port of the remote access node, or the remote access node identifier ID is queried according to the virtual AN user side port and the IP address of the virtual AN.
  • the relationship map is obtained.
  • the mapping relationship of the relationship mapping table further includes the remote access node identifier ID.
  • the proxy node includes at least a first node and a second node.
  • the first node establishes a relationship mapping table, receives the message, queries the relationship mapping table according to the first parameter information carried in the packet, obtains the second parameter information, and sends the second parameter information to the second node;
  • the two parameter information sends a message to the remote access node corresponding to the second parameter information.
  • mapping relationship of the relationship mapping table further includes a remote access node identifier ID; the first parameter information includes a virtual AN user side port and an IP address of the virtual AN, and the second parameter information includes the remote access node ID and the far parameter. End access node user side port.
  • the first node sends the second parameter information to the second node, and the first node modifies the virtual AN user-side port in the packet to the user-side port of the remote access node, and forwards the packet to the second node.
  • the packet carries the remote access node ID and the user port of the remote access node.
  • the second node sends a packet to the remote access node corresponding to the second parameter information according to the second parameter information, including: the second node encapsulates the packet sent from the first node into a frame, and adds the far field to the frame.
  • the end access node ID and the frame are sent to the corresponding remote access node.
  • mapping relationship of the relationship mapping table may further include a proxy node user side port.
  • the second parameter information further includes a proxy node user side port, so that when the proxy node sends a packet to the remote access node, The proxy-side mapping table can be used to determine from which proxy node the user-side port is sent.
  • the proxy node corresponds to at least two of the remote access nodes, and the plurality of remote access nodes are virtualized into one virtual AN, so that the system can manage the pressure of managing a large number of remote access nodes.
  • the proxy node can assign an IP address to the virtual AN when establishing the relationship mapping table.
  • the IP address of the virtual AN can be manually assigned. After the IP address is assigned, the management system needs to be notified.
  • the method for notifying the management system of the virtual AN's IP address may be a proxy node Broadcast, notify the management system to update the routing table address; or manually update the address information of the management system manually.
  • a virtual AN proxy is set at the proxy node to assist the management system in controlling and managing the remote access node.
  • the most preferred way is that each virtual AN has an IP address instead of each remote access.
  • Nodes have an IP address, which can reduce the allocation and management of IP addresses and reduce the operation and maintenance costs.
  • the embodiment of the present invention sets a relationship mapping table on the proxy node, where the relationship mapping table includes the mapping relationship between the virtual AN's IP address, the virtual AN user-side port, and the remote access node's user-side port.
  • the AN is a device that can be managed by the management system. After receiving the packet sent by the management system, the proxy node queries the relationship mapping table according to the content of the packet; and then sends the packet to the corresponding remote access node according to the query result.
  • a further embodiment of the present invention provides a method for virtualizing an access network, which is used for a proxy node, where the proxy node includes a first node and a second node, the first node takes an IP edge node as an example, and the second node takes an OLT as an example.
  • the user equipment 1, the customer equipment 2, and the customer equipment 3 are connected to DPU1, DPU2, and DPU3, respectively.
  • DPU1, DPU2, and DPU3 are connected to the OLT, which are FTTDp type access networks; 4 is connected to the MxU, and the MxU is connected to the OLT, and is an FTTB or FTTC type access network.
  • a virtual AN proxy that is, a DPU proxy
  • the virtual AN proxy corresponds to three DPUs, that is, three DPUs are virtualized into one MxU, that is, a virtual AN, in order to communicate with the network.
  • the virtual MxU is marked as MxU1.
  • the virtual AN proxy includes a first level DPU proxy and a second level DPU proxy, the first level DPU proxy is located at the IP edge node, and the second level DPU proxy is located at the OLT.
  • the method includes:
  • the proxy node allocates an IP address to the virtual AN.
  • Each virtual AN must have an IP address, which can be manually assigned. After the IP address is assigned, the management system needs to be notified.
  • the manner in which the IP address of the virtual AN is notified to the management system may be that the proxy node broadcasts through the protocol, notifies the management system to update the routing table address; or manually updates the address information of the management system.
  • the proxy node establishes a relationship mapping table according to the IP address of the virtual AN, the virtual AN user side port, the DPU ID, the DPU user side port, and the OLT user side port.
  • a virtual AN proxy is set in the proxy node, the assigned IP address is 10.66.93.110, and the virtual AN proxy corresponds to 3 DPUs: DPU1, DPU2, and DPU3.
  • DPU1 and DPU2 have only one user-side port, and DPU3 has four user-side ports; DPU1, DPU2, and DPU3 are connected to the OLT user-side port, and a relationship mapping table is established according to the above-mentioned node information, as shown in Table 1.
  • each access node is: (access node ID, port number, virtual local area network ID).
  • the access node ID may be a remote node identifier, a proxy node identifier, or a virtual AN identifier;
  • the port number may be a cabinet chassis number, a rack rack number, or a frame frame of the device. Combination of one or more of the number, the slot number, the sub-slot number, and the port number; the virtual LAN ID is optional.
  • the user-side port information of the access node is used, the information may not be included.
  • Virtual LAN ID When the user-side port information of the access node is used, the information may not be included.
  • the first node receives the packet sent by the management system, where the packet carries the virtual AN user-side port and the IP address of the virtual AN.
  • the packet type that the management system sends to the OLT may be a Point-to-Point Protocol over Ethernet (PPPoE) packet, a DHCP (Dynamic Host Configuration Protocol) packet, and an ANCP.
  • PPPoE Point-to-Point Protocol over Ethernet
  • DHCP Dynamic Host Configuration Protocol
  • ANCP Access Node Control Protocol
  • SNMP Simple Network Management Protocol
  • the virtual AN user-side port carried in the packet is MxU1/slot1/port1
  • the destination IP address is 10.66.93.110.
  • the first node queries the relationship mapping table according to the IP address of the virtual AN user-side port and the virtual AN, and obtains the DPU user-side port and the OLT user-side port.
  • the proxy node can know whether the packet is a packet sent to the DPU corresponding to the virtual AN proxy according to the destination IP address.
  • the virtual AN user side port in the first node modification packet is a DPU user side port, and then forwards the packet to the second node.
  • the packet carries an OLT user side port and a DPU user side port.
  • the packet may further carry an ID of the DPU.
  • the data in the packet received by the proxy node is transmitted to the DPU1.
  • the IP edge node queries the relationship mapping table, the virtual AN user-side port carried in the packet is MxU1/slot1/port1 and is modified to DPU1. /port1, then forward the message.
  • the second node receives the packet forwarded by the first node, and encapsulates the packet into a frame, adding the frame Add the ID of the DPU.
  • the ID of the DPU can be obtained according to the DPU user-side port, for example, from the name of the DPU user-side port, and the name of the DPU user-side port meets a certain naming convention.
  • the DPU user side port DPU1/port1 in Table 1 indicates that the ID of the DPU is 1, and the port number of the DPU is 1.
  • the ID of the DPU may also be obtained by the IP edge node in the query relationship mapping table in step 204, and sent to the OLT through the foregoing message.
  • the frame encapsulation is in the prior art, and is generally divided into: filling a header field of a frame, filling a data field, calculating a CRC (Cyclic Redundancy Check) check code, and filling.
  • CRC Cyclic Redundancy Check
  • the second node sends a frame to the corresponding DPU according to the DPU user side port.
  • the OLT sends a frame from the user side port, and the frame transmits the frame to the corresponding DPU through the ODN.
  • the OLT needs to send it from the OLT1/slot1/port1 port, and then transmit the frame to DPU1 through the ODN.
  • the proxy node After the proxy node establishes the relationship mapping table, the data between the DPU and the management system is processed according to the corresponding relationship in the table.
  • the foregoing steps are the processing of the downlink data by the proxy node.
  • step 208 to step 212 may be further included.
  • the second node receives the frame sent by the DPU, and carries the DPU user-side port in the packet in the frame payload.
  • the OLT receives the frame sent by the DPU from the user-side port, and carries the DPU user-side port in the packet in the frame payload.
  • the second node decapsulates the packet from the frame, and forwards the packet to the first node.
  • the decapsulation is a prior art, and the purpose is to read data carried in a frame.
  • the first node receives the packet, and obtains an IP address of the virtual AN user-side port and the virtual AN according to the DPU user-side port query relationship mapping table.
  • the DPU user side port can be obtained in the decapsulated message, and the relationship mapping table is queried according to the DPU user side port and the DPU ID.
  • the query relationship mapping table may obtain the virtual AN user side port corresponding to the DPU and the IP address of the virtual AN.
  • the DPU user-side port in the first node modification packet is a virtual AN user-side port, and the source IP address is changed to the virtual AN IP address.
  • the proxy node receives the frame sent by the DPU1, and according to the query result, the DPU1/port1 in the decapsulated packet is modified to MxU1/slot1/port1, and the source IP address is changed to 10.66.93.110.
  • the first node sends a message to the management system.
  • the sent message carries the virtual AN user-side port and the IP address of the virtual AN.
  • the packet type can be a PPPoE packet, a DHCP packet, an ANCP packet, or an SNMP packet.
  • each DPU can be assigned an IP address. If the DPU has an IP address, if the relationship mapping table is established in step 202, the IP address entry of the DPU is also included, and the relationship mapping table is established, as shown in Table 2. In step 204 and step 210, the table 2 needs to be queried. The relationship mapping table; in step 205, the destination IP address in the packet is also modified to be the IP address of the DPU.
  • a virtual AN proxy is set at the proxy node to assist the management system to remotely connect.
  • the most preferred way for the ingress node to control and manage is to have an IP address for each virtual AN, instead of having an IP address for each remote access node, which can reduce the allocation and management of IP addresses and reduce the operation and maintenance costs.
  • the proxy node may also include only one node, and the node may be an OLT or an IP edge node, and the foregoing data processing process is completed on the node.
  • the embodiment of the present invention sets a virtual AN proxy on the proxy node, and the relationship mapping table is established in the virtual AN proxy, including the mapping relationship between the virtual AN's IP address, the virtual AN user-side port, and the DPU user-side port.
  • the virtual AN is a device that can be managed by the management system.
  • the first node When processing the downlink data, the first node receives the packet sent by the management system, queries the relationship mapping table according to the content of the packet, and then modifies the content according to the query result, and forwards the content to the a second node, the second node sends the packet to the corresponding DPU; when processing the uplink data, the second node receives the packet and forwards the packet to the first node, and the first node queries the relationship mapping table, and after modifying the corresponding content, The management system sends a message.
  • the cost of operation and maintenance is increased, and the quality of the user's use of the network service is reduced.
  • a further embodiment of the present invention provides a proxy node 40.
  • the proxy node 40 includes:
  • the establishing unit 41 is configured to establish a relationship mapping table, where the relationship mapping table includes a mapping relationship between a network protocol IP address of the virtual access node AN, a virtual AN user side port, and a remote access node user side port, where the virtual AN is Is the device that the management system can manage;
  • the receiving unit 42 is configured to receive a packet sent by the management system.
  • the querying unit 43 is configured to use the first parameter carried by the packet received by the receiving unit 42 The information querying the relationship mapping table established by the establishing unit 41, obtaining second parameter information;
  • the sending unit 44 is configured to send the packet to the remote access node corresponding to the second parameter information according to the second parameter information that is queried by the query unit 43.
  • the first parameter information includes the virtual AN user-side port and the destination IP address
  • the destination IP address is an IP address of the virtual AN
  • the second parameter information includes the remote access node user. Side port.
  • the proxy node 40 further includes:
  • the modifying unit 45 is configured to modify the virtual AN user side port in the packet received by the receiving unit 42 to the remote access node user side port obtained by the query unit 43.
  • the sending unit 44 includes:
  • the encapsulating sub-unit 441 is configured to encapsulate the packet modified by the modifying unit 45 into a frame, and add a remote access node identifier ID in the frame, where the remote access node identifier ID is according to the far
  • the user interface of the end access node is obtained, or the remote access node identifier is obtained by querying the relationship mapping table according to the virtual AN user port and the IP address of the virtual AN, where the relationship mapping table is obtained.
  • the mapping relationship also includes the remote access node identifier ID;
  • the sending subunit 442 is configured to send the frame encapsulated by the encapsulating subunit 441 to a corresponding remote access node.
  • mapping relationship of the relationship mapping table further includes an IP address of the remote access node
  • second parameter information further includes an IP address of the remote access node
  • modifying unit 45 is further configured to:
  • the mapping relationship of the relationship mapping table further includes a proxy node user side port, and the second parameter information further includes a proxy node user side port.
  • the proxy node proxy corresponds to at least two of the remote access nodes.
  • the proxy node includes at least a first node and a second node, where the first node establishes the relationship mapping table, receives the packet, and queries according to the first parameter information carried in the packet.
  • the relationship mapping table obtains the second parameter information, and sends the second parameter information to the second node; the second node, according to the second parameter information, corresponds to the second parameter information.
  • the remote access node sends the message.
  • the mapping relationship between the relationship mapping table further includes the remote access node identifier ID; the first parameter information includes the virtual AN user side port and the IP address of the virtual AN, and the second The parameter information includes the remote access node ID and the remote access node user side port; the first node sends the second parameter information to the second node, including: the first node Modifying the virtual AN user-side port in the packet to be the user-side port of the remote access node, and forwarding the packet to the second node, where the packet carries the far End access node ID, the remote access node user side port; the second node sends the message to the remote access node corresponding to the second parameter information according to the second parameter information
  • the second node encapsulates the packet sent from the first node into a frame, adds the remote access node ID to the frame, and sends a corresponding remote access node to the corresponding remote access node. Send the frame.
  • the embodiment of the present invention provides a relationship mapping table on the proxy node 40.
  • the relationship mapping table includes a mapping relationship between the virtual AN's IP address, the virtual AN user-side port, and the remote access node's user-side port.
  • the virtual AN is a device that can be managed by the management system; after receiving the packet sent by the management system, the proxy node 40 queries the relationship mapping table according to the content of the packet; and then sends the report to the corresponding remote access node according to the query result.
  • a further embodiment of the present invention provides a proxy node 50.
  • the proxy node 50 includes:
  • the processor 51 is configured to establish a relationship mapping table, where the relationship mapping table includes a mapping relationship between a network protocol IP address of the virtual access node AN, a virtual AN user side port, and a remote access node user side port, where the virtual AN is Is the device that the management system can manage;
  • a receiver 52 configured to receive a packet sent by the management system
  • the processor 51 is further configured to query the relationship mapping table according to the first parameter information carried in the packet, to obtain second parameter information;
  • the transmitter 53 is configured to send, according to the second parameter information, the packet to a remote access node corresponding to the second parameter information.
  • the first parameter information includes the virtual AN user-side port and the destination IP address
  • the destination IP address is an IP address of the virtual AN
  • the second parameter information includes the remote access node user. Side port.
  • the processor 51 is further configured to modify the virtual AN user side port in the packet to be the remote access node user side port.
  • the processor 51 is further configured to encapsulate the packet into a frame, and add a remote access node identifier ID in the frame, where the remote access node identifier ID is accessed according to the remote end.
  • the node user-side port is obtained, or the remote access node identifier ID is obtained by querying the relationship mapping table according to the virtual AN user-side port and the IP address of the virtual AN, and the mapping relationship of the relationship mapping table is Also including the remote access node identification ID;
  • the transmitter 53 is further configured to send the frame to a corresponding remote access node.
  • mapping relationship of the relationship mapping table further includes an IP address of the remote access node
  • second parameter information further includes an IP address of the remote access node
  • processor 51 is further configured to modify the destination IP address in the packet to an IP address of the remote access node.
  • the mapping relationship of the relationship mapping table further includes a proxy node user side port, and the second parameter information further includes a proxy node user side port.
  • the proxy node corresponds to at least two of the remote access nodes.
  • the proxy node includes at least a first node and a second node, where the first node is built Forming the relationship mapping table, receiving the message, querying the relationship mapping table according to the first parameter information carried in the packet, obtaining second parameter information, and sending the second parameter information to the second And the second node sends the packet to the remote access node corresponding to the second parameter information according to the second parameter information.
  • the mapping relationship between the relationship mapping table further includes the remote access node identifier ID; the first parameter information includes the virtual AN user side port and the IP address of the virtual AN, and the second The parameter information includes the remote access node ID and the remote access node user side port; the first node sends the second parameter information to the second node, including: the first node Modifying the virtual AN user-side port in the packet to be the user-side port of the remote access node, and forwarding the packet to the second node, where the packet carries the far End access node ID, the remote access node user side port; the second node sends the message to the remote access node corresponding to the second parameter information according to the second parameter information
  • the second node encapsulates the packet sent from the first node into a frame, adds the remote access node ID to the frame, and sends a corresponding remote access node to the corresponding remote access node. Send the frame.
  • the embodiment of the present invention sets a relationship mapping table on the proxy node 50.
  • the relationship mapping table includes the mapping relationship between the virtual AN's IP address, the virtual AN user-side port, and the remote access node's user-side port.
  • the AN is a device that can be managed by the management system. After receiving the packet sent by the management system, the proxy node 50 queries the relationship mapping table according to the content of the packet; and then sends the packet to the corresponding remote access node according to the query result.
  • the proxy node provided by the embodiment of the present invention may implement the foregoing method embodiment.
  • Embodiments of the present invention provide A method for accessing network virtualization and a proxy node may be applied to a proxy node, but is not limited thereto.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

本发明实施例公开了一种接入网虚拟化的方法及代理节点，涉及通信技术领域，能够在原有接入网络中加入新类型的接入网节点时，不需要修改现有的管理系统。本发明的方法包括：所述代理节点建立关系映射表；代理节点接收所述管理系统发送的报文；根据所述报文携带的第一参数信息查询所述关系映射表，获得第二参数信息；根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文。本发明适用于代理节点。

Description

接入网虚拟化的方法及代理节点
本申请要求于2013年11月13日提交中国专利局、申请号为CN201310567058.X、发明名称为“接入网虚拟化的方法及代理节点”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，尤其涉及一种接入网虚拟化的方法及代理节点。
背景技术
光纤接入网是一种以光纤作为主要传输媒介的接入网，从系统分配上分为有源光接入网和无源光接入网，无源光接入网根据光网络单元的所在位置，可以分为FTTH(Fiber To The Home，光纤到家)、FTTB(Fiber To The Building，光纤到楼)、FTTC(Fiber To The Curb，光纤到路边)、FTTN(Fiber To The Node，光纤到节点)和FTTDp(Fiber to Drop/Distribution Point，光纤到分配点)等几种类型。无源光网络技术是一种点到多点的光纤接入网技术，它由OLT(Optical Line Terminal，光线路终端)、ONU(Optical Network Unit，光网络单元)或者ONT(Optical Network Terminal，光网络终端)以及ODN(Optical Distribution Network，光分配网络)组成。MDU(Multi-Dwelling Unit，多住户单元)和MTU(Multi-Tenant Unit，多租户单元)是FTTB或FTTC等类型下的ONU，MDU和MTU统称为MxU，MxU通常为框式设备。
FTTDp为新增的接入网类型，它是将光纤铺设到家庭住宅外墙，入户的最后一段距离仍利用已入户的铜缆或无线接口连接，与FTTH类型中每一用户都需要铺设光纤相比，降低了成本。DPU(Drop Point Unit，分配点单元)是FTTDp类型下的ONU，通常为盒式设备，DPU的数量与家庭网关在同一个数量级。
现有技术至少存在如下问题：由于DPU与MxU结构不同且数量较多，运维管理复杂，所以，如果运营商想要在原有网络中加入FTTDp类型的接入 网节点，则需要修改管理系统。而修改管理系统，会增加运维的成本，中断现存大量的接入网用户的服务，影响用户对网络的使用，给用户带来不便。
发明内容
本发明的实施例提供一种接入网虚拟化的方法及代理节点，能够减少在原有接入网络中加入新类型的接入网节点时所导致的需要修改现有的管理系统的问题。
为达到上述目的，本发明的实施例采用如下技术方案：
第一方面，本发明的实施例提供一种接入网虚拟化的方法，包括：
所述代理节点建立关系映射表，所述关系映射表包括虚拟接入节点AN的网络协议IP地址、虚拟AN用户侧端口和远端接入节点用户侧端口的映射关系，所述虚拟AN是所述管理系统所能够管理的设备；
接收所述管理系统发送的报文；
根据所述报文携带的第一参数信息查询所述关系映射表，获得第二参数信息；
根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文。
结合第一方面，在第一种可能的实现方式中，所述第一参数信息包括所述虚拟AN用户侧端口和目的IP地址，所述目的IP地址为所述虚拟AN的IP地址；
所述第二参数信息包括所述远端接入节点用户侧端口。
可选的，所述代理节点至少包括第一节点和第二节点，所述第一节点建立所述关系映射表，接收所述报文，根据所述报文携带的所述第一参数信息查询所述关系映射表，获得所述第二参数信息，将所述第二参数信息发送给所述第二节点；
所述第二节点根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文。
结合第一种可能的实现方式，在第二种可能的实现方式中，所述获得第二参数信息之后，所述方法还包括：
将所述报文中的所述虚拟AN用户侧端口修改为所述远端接入节点用户侧端口。
可选的，所述关系映射表的映射关系中还包括所述远端接入节点标识ID；
所述第一参数信息包括所述虚拟AN用户侧端口和所述虚拟AN的IP地址，所述第二参数信息包括所述远端接入节点ID、所述远端接入节点用户侧端口；
所述第一节点将所述第二参数信息发送给所述第二节点，包括：
所述第一节点将所述报文中的所述虚拟AN用户侧端口修改为所述远端接入节点用户侧端口，并将所述报文转发给所述第二节点，所述报文中携带所述远端接入节点ID、所述远端接入节点用户侧端口；
所述第二节点根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文，包括：
所述第二节点将从所述第一节点发来的所述报文封装成帧，在所述帧中添加所述远端接入节点ID；以及向对应的远端接入节点发送所述帧。
结合第二种可能的实现方式，在第三种可能的实现方式中，所述根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文包括：
将所述报文封装成帧，在所述帧中添加远端接入节点标识ID，所述远端接入节点标识ID根据所述远端接入节点用户侧端口得到，或者所述远端接入节点标识ID是根据所述虚拟AN用户侧端口和所述虚拟AN的IP地址查询所述关系映射表得到，所述关系映射表的映射关系中还包括所述远端接入节点标识ID；
向对应的远端接入节点发送所述帧。
结合第一方面或任一种可能的实现方式，在第四种可能的实现方式中，所述关系映射表的映射关系中还包括所述远端接入节点的IP地址；
所述第二参数信息还包括所述远端接入节点的IP地址。
结合第四种可能的实现方式，在第五种可能的实现方式中，所述将所述报文封装成帧，在所述帧中添加远端接入节点标识ID之前，所述方法还包括：
将所述报文中的目的IP地址修改为所述远端接入节点的IP地址。
结合第一方面或任一种可能的实现方式，在第六种可能的实现方式中，所述关系映射表的映射关系还包括代理节点用户侧端口，所述第二参数信息还包括代理节点用户侧端口。
结合第一方面或任一种可能的实现方式，在第七种可能的实现方式中，所述代理节点对应至少两个所述远端接入节点。
第二方面，本发明的实施例提供一种代理节点，包括：
建立单元，用于建立关系映射表，所述关系映射表包括虚拟接入节点AN的网络协议IP地址、虚拟AN用户侧端口和远端接入节点用户侧端口的映射关系，所述虚拟AN是所述管理系统所能够管理的设备；
接收单元，用于接收管理系统发送的报文；
查询单元，用于根据所述接收单元接收的所述报文携带的第一参数信息查询所述建立单元建立的所述关系映射表，获得第二参数信息；
发送单元，用于根据所述查询单元查询的所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文。
结合第二方面，在第一种可能的实现方式中，所述第一参数信息包括所述虚拟AN用户侧端口和目的IP地址，所述目的IP地址为所述虚拟AN的IP地址；
所述第二参数信息包括所述远端接入节点用户侧端口。
可选的，所述代理节点至少包括第一节点和第二节点，所述第一节点建立所述关系映射表，接收所述报文，根据所述报文携带的所述第一参数信息查询所述关系映射表，获得所述第二参数信息，将所述第二参数信息发送给所述第二节点；
所述第二节点根据所述第二参数信息，向与所述第二参数信息对应的远 端接入节点发送所述报文。
结合第一种可能的实现方式，在第二种可能的实现方式中，所述代理节点还包括：
修改单元，用于将所述接收单元接收的所述报文中的所述虚拟AN用户侧端口修改为所述查询单元得出的所述远端接入节点用户侧端口。
可选的，所述关系映射表的映射关系中还包括所述远端接入节点标识ID；
所述第一参数信息包括所述虚拟AN用户侧端口和所述虚拟AN的IP地址，所述第二参数信息包括所述远端接入节点ID、所述远端接入节点用户侧端口；
所述第一节点将所述第二参数信息发送给所述第二节点，包括：
所述第一节点将所述报文中的所述虚拟AN用户侧端口修改为所述远端接入节点用户侧端口，并将所述报文转发给所述第二节点，所述报文中携带所述远端接入节点ID、所述远端接入节点用户侧端口；
所述第二节点根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文，包括：
所述第二节点将从所述第一节点发来的所述报文封装成帧，在所述帧中添加所述远端接入节点ID；以及向对应的远端接入节点发送所述帧。
结合第二种可能的实现方式，在第三种可能的实现方式中，所述发送单元包括：
封装子单元，用于将所述修改单元修改的所述报文封装成帧，在所述帧中添加远端接入节点标识ID，所述远端接入节点标识ID根据所述远端接入节点用户侧端口得到，或者所述远端接入节点标识ID是根据所述虚拟AN用户侧端口和所述虚拟AN的IP地址查询所述关系映射表得到，所述关系映射表的映射关系中还包括所述远端接入节点标识ID；
发送子单元，用于向对应的远端接入节点发送所述封装子单元封装的所述帧。
结合第二方面或任一种可能的实现方式，在第四种可能的实现方式中，所述关系映射表的映射关系中还包括所述远端接入节点的IP地址；
所述第二参数信息还包括所述远端接入节点的IP地址。
结合第四种可能的实现方式，在第五种可能的实现方式中，所述修改单元还用于将所述接收单元接收的所述报文中的目的IP地址修改为所述查询单元得出的所述远端接入节点的IP地址。
结合第二方面或任一种可能的实现方式，在第六种可能的实现方式中，所述关系映射表的映射关系还包括代理节点用户侧端口，所述第二参数信息还包括代理节点用户侧端口。
结合第二方面或任一种可能的实现方式，在第七种可能的实现方式中，所述代理节点对应至少两个所述远端接入节点。
本发明实施例提供的一种接入网虚拟化的方法及代理节点，与现有技术中，在原有网络中加入新类型(例如FTTDp)的接入网节点(即远端接入节点)时，需要修改现有的运维支撑系统，从而增加了运维成本的问题相比，本发明中在代理节点上设置关系映射表，所述关系映射表包括虚拟AN的IP地址、虚拟AN用户侧端口和远端接入节点用户侧端口的映射关系，所述虚拟AN是所述管理系统所能够管理的设备；代理节点接收管理设备发送的报文后，根据报文内容查询关系映射表；然后根据查询结果向对应的远端接入节点发送所述报文。如此，不需要修改现有的管理系统，从而可以降低运维的成本，缩短系统集成时间，从而减少对其他用户产生影响。进一步地，还可将将多个远端接入节点虚拟成一个虚拟AN，由于运营商是以虚拟AN为单位进行管理和控制，而不再直接对大量远端接入节点进行管理维护，所以极大降低了运维成本。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例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它的附图。
图1为本发明一实施例提供的网络架构图；
图2为本发明一实施例提供的方法流程图；
图3为本发明又一实施例提供的网络架构图；
图4-图7为本发明又一实施例提供的方法流程图；
图8、图9为本发明又一实施例提供的代理节点结构示意图；
图10为本发明又一实施例提供的代理节点结构示意图。
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它实施例，都属于本发明保护的范围。
需要说明的是，本实施例中代理节点仅仅是以OLT和IP边缘节点为例进行说明的，在实际实施过程中，代理节点还可以为其他类型的节点，例如汇聚节点，此处并不对代理节点的具体类型进行限定。
本发明实施例提供的技术方案可以用于接入网络，该接入网络包括远端接入节点、代理节点和管理系统。其中远端接入节点可以是ONU、ONT、DPU、MxU、DSLAM(Digital Subscriber Line Access Multiplexer，数字用户线路接入复用器)、交换机或CMTS(Cable Modem Terminal Systems，电缆调制解调器终端系统)等各种设备，它与用户端设备相连；代理节点可以是OLT、DSLAM、IP(Internet Protocol，网络协议)边缘节点、交换机、路由器等设备，远端接入节点和代理节点之间可以是DSL(Digital Subscriber Line，数字用户专线)、Ethernet(以太网)、PON(Passive Optical Network，无源光纤网络)等各种接入方式进行数据传输；管理系统可以是路由器、服务器等，它可以通过报文与代理节点进行数据传输。
本发明实施例提供一种接入网虚拟化的方法，如图1所示，将远端接入节 点(通常是小型化的设备)虚拟化为一个能够被管理系统所识别的接入节点，即虚拟AN，运营商通过设置虚拟AN(Access Node，接入节点)代理对远端接入节点按虚拟AN进行控制和管理，例如可以在代理节点设置虚拟AN(Access Node，接入节点)代理，运营商网络管理或管理系统通过虚拟AN代理对远端接入节点进行控制和管理，如图2所示，所述方法包括：
101、代理节点建立关系映射表。
其中，关系映射表包括虚拟接入节点AN的网络协议IP地址、虚拟AN用户侧端口和远端接入节点用户侧端口的映射关系，所述虚拟AN是所述管理系统所能够管理的设备。
可选的，如果远端接入节点有IP地址，则关系映射表的映射关系中还可以进一步包括远端接入节点的IP地址。
102、代理节点接收管理系统发送的报文。
其中，报文中携带了虚拟AN用户侧端口和目的IP地址，目的IP地址为虚拟AN的IP地址。
103、代理节点根据报文携带的第一参数信息查询关系映射表，获得第二参数信息。
需要说明的是，第一参数信息包括虚拟AN用户侧端口和目的IP地址；第二参数信息包括远端接入节点用户侧端口。
其中，代理节点根据虚拟AN用户侧端口和虚拟AN的IP地址查询关系映射表，得到远端接入节点用户侧端口，将报文中的虚拟AN用户侧端口修改为远端接入节点用户侧端口。
可选的，如果远端接入节点有IP地址，则通过查询关系映射表，第二参数信息还包括远端接入节点的IP地址，在修改报文时，还需要将报文中的目的IP地址修改为远端接入节点的IP地址。
104、代理节点根据第二参数信息，向与第二参数信息对应的远端接入节点发送报文。
其中，代理节点将报文封装成帧，在帧中添加远端接入节点ID(Identity， 标识号码)，然后，向对应的远端接入节点发送帧。
可选的，远端接入节点ID是根据远端接入节点用户侧端口得到的，或者远端接入节点标识ID是根据所述虚拟AN用户侧端口和所述虚拟AN的IP地址查询所述关系映射表得到。第二种情况下，则关系映射表的映射关系中还包括远端接入节点标识ID。
可选的，代理节点至少包括第一节点和第二节点。第一节点建立关系映射表，接收报文，根据报文携带的第一参数信息查询关系映射表，获得第二参数信息，将第二参数信息发送给所述第二节点；第二节点根据第二参数信息，向与第二参数信息对应的远端接入节点发送报文。
进一步的，关系映射表的映射关系中还包括远端接入节点标识ID；第一参数信息包括虚拟AN用户侧端口和虚拟AN的IP地址，第二参数信息包括远端接入节点ID、远端接入节点用户侧端口。第一节点将第二参数信息发送给第二节点，包括：第一节点将报文中的虚拟AN用户侧端口修改为远端接入节点用户侧端口，并将报文转发给第二节点，报文中携带远端接入节点ID、远端接入节点用户侧端口。第二节点根据第二参数信息，向与第二参数信息对应的远端接入节点发送报文，包括：第二节点将从第一节点发来的报文封装成帧，在帧中添加远端接入节点ID，以及向对应的远端接入节点发送帧。
需要说明的是，关系映射表的映射关系还可以包括代理节点用户侧端口，相应地，第二参数信息还包括代理节点用户侧端口，这样代理节点在向远端接入节点发送报文时，可以根据查询关系映射表来确定从哪个代理节点用户侧端口发送。
此外，在一个实施例中，代理节点对应至少两个所述远端接入节点，多个远端接入节点虚拟成一个虚拟AN，这样可以管理系统管理大量远端接入节点的压力。
举例来说，代理节点在建立关系映射表时，可以给虚拟AN分配IP地址。虚拟AN的IP地址可以为人工分配，在分配IP地址后，需要通知管理系统。
可选的，将虚拟AN的IP地址通知管理系统的方式可以是代理节点通过协 议广播，通知管理系统更新路由表地址；或者通过人工手动更新管理系统的地址信息。
需要说明的是，在代理节点设置虚拟AN代理，来辅助管理系统对远端接入节点进行控制和管理，最优选的方式为每个虚拟AN有一个IP地址，而不是每个远端接入节点都有一个IP地址，可以减少IP地址的分配和管理，降低运维成本。
现有技术中，在原有网络中加入新类型(例如FTTDp)的接入网节点(即远端接入节点)时，需要修改现有的管理系统，从而增加运维成本。与现有技术相比，本发明实施例在代理节点上设置了关系映射表，关系映射表包括虚拟AN的IP地址、虚拟AN用户侧端口和远端接入节点用户侧端口的映射关系，虚拟AN是所述管理系统所能够管理的设备；代理节点接收管理系统发送的报文后，根据报文内容查询关系映射表；然后根据查询结果向对应的远端接入节点发送所述报文。解决了现有技术中，增加了运维的成本，降低了用户使用网络服务的质量的问题。通过解决上述技术问题，不需要修改现有的管理系统，从而可以降低运维的成本，缩短系统集成时间，从而减少对其他用户产生影响，进一步地，还可将将多个远端接入节点虚拟成一个虚拟AN，由于运营商是以虚拟AN为单位进行管理和控制，而不再直接对大量远端接入节点进行管理维护，所以极大降低了运维成本。
本发明又一实施例提供一种接入网虚拟化的方法，用于代理节点，代理节点包括第一节点和第二节点，第一节点以IP边缘节点为例，第二节点以OLT为例。如图3所示网络架构，用户端设备1、用户端设备2和用户端设备3分别与DPU1、DPU2和DPU3相连，DPU1、DPU2和DPU3与OLT相连，为FTTDp类型接入网；用户端设备4与MxU相连，MxU与OLT相连，为FTTB或FTTC类型接入网。本发明实施中在代理节点中设置虚拟AN代理，即DPU代理，然后管理系统通过虚拟AN代理对3个DPU按虚拟化MxU进行控制和管理。虚拟AN代理对应3个DPU，即将3个DPU虚拟化为一个MxU，即虚拟AN，为了与网络 中其他MxU区分，将虚拟的MxU标记为MxU1。虚拟AN代理包括第一级DPU代理和第二级DPU代理，第一级DPU代理位于IP边缘节点，第二级DPU代理位于OLT。如图4所示，所述方法包括：
201、代理节点为虚拟AN分配IP地址。
其中，每个虚拟AN都要有一个IP地址，可以人工分配，在分配IP地址后，需要通知管理系统。
可选的，将虚拟AN的IP地址通知管理系统的方式可以是代理节点通过协议广播，通知管理系统更新路由表地址；或者通过人工手动更新管理系统的地址信息。
202、代理节点根据虚拟AN的IP地址、虚拟AN用户侧端口、DPU的ID、DPU用户侧端口和OLT用户侧端口建立关系映射表。
例如，如图2所示网络中，在代理节点中设置虚拟AN代理，分配IP地址为10.66.93.110，虚拟AN代理对应3个DPU：DPU1、DPU2和DPU3。DPU1和DPU2只有一个用户侧端口，DPU3有4个用户侧端口；DPU1、DPU2和DPU3接到OLT用户侧端口，根据上述节点信息建立关系映射表，如表1所示。
表1：
Figure PCTCN2014088348-appb-000001
需要说明的是，各接入节点的用户侧端口信息格式为：(接入节点ID、端口号、虚拟局域网ID)。其中，接入节点ID可以为远端节点标识、代理节点标识或虚拟AN标识；端口号可以为设备的机柜chassis号、机架rack号、框frame 号、槽位slot号、子槽位sub-slot号和端口port号的一种或多种的组合；虚拟局域网ID为可选项，在用到接入节点的用户侧端口信息时，可以不包括虚拟局域网ID。
203、第一节点接收管理系统发送的报文，报文中携带虚拟AN用户侧端口和虚拟AN的IP地址。
其中，管理系统向OLT发送的报文类型可以是PPPoE(Point-to-Point Protocol over Ethernet，以太网承载点对点协议)报文、DHCP(Dynamic Host Configuration Protocol，动态主机配置协议)报文、ANCP(Access Node Control Protocol，接入节点控制协议)报文或SNMP(Simple Network Management Protocol，简单网络管理协议)报文等。如果报文中数据要传输给虚拟AN代理所对应的DPU，则报文中携带虚拟AN用户侧端口和目的IP地址，目的IP地址为虚拟AN的IP地址。
例如，如表1所示，如果代理节点接收的报文中数据要传输给DPU1，则报文中携带的虚拟AN用户侧端口为MxU1/slot1/port1，目的IP地址为10.66.93.110。
204、第一节点根据报文中携带虚拟AN用户侧端口和虚拟AN的IP地址查询关系映射表，得出DPU用户侧端口和OLT用户侧端口。
需要说明的是，代理节点接收报文后，根据目的IP地址可以知道报文是否为发送给虚拟AN代理所对应的DPU的报文。
205、第一节点修改报文中的虚拟AN用户侧端口为DPU用户侧端口，然后向第二节点转发报文。
其中，所述报文中携带OLT用户侧端口和DPU用户侧端口。
可选的，所述报文中还可以携带DPU的ID。
例如，如表1所示，代理节点接收的报文中数据要传输给DPU1，在IP边缘节点查询关系映射表后，将报文携带的虚拟AN用户侧端口为MxU1/slot1/port1修改为DPU1/port1，然后转发报文。
206、第二节点接收第一节点转发的报文，并将报文封装成帧，在帧中添 加DPU的ID。
其中，举例来说，DPU的ID可以根据DPU用户侧端口得到，例如从DPU用户侧端口的名称中得到,此时DPU用户侧端口的名称符合一定的命名规范。例如，表1中的DPU用户侧端口DPU1/port1,表示DPU的ID是1，DPU的端口号是1。又举例来说，DPU的ID也可以在步骤204中IP边缘节点通过查询关系映射表中得到，并通过上述报文发送给OLT。帧封装为现有技术，一般分为：填充帧的头部字段、填充数据字段、计算CRC(Cyclic Redundancy Check，循环冗余校验)校验码并填充。封装时，要在帧中添加DPU的ID。
207、第二节点根据DPU用户侧端口向对应的DPU发送帧。
其中，OLT从用户侧端口发送帧，帧通过ODN将其传输至对应的DPU。
例如，OLT要将帧发送给DPU1，则OLT需要从OLT1/slot1/port1端口发送，然后通过ODN将帧传输至DPU1。
可选的，代理节点建立关系映射表后，根据表中的对应关系，对DPU和管理系统之间的数据进行处理。上述步骤为代理节点对下行数据的处理过程，当代理节点处理上行数据时，如图5所示，在步骤201和步骤202后，还可以包括步骤208至步骤212。
208、第二节点接收DPU发送的帧，在帧净荷内的报文中携带DPU用户侧端口。
其中，OLT从用户侧端口接收DPU发送的帧，在帧净荷内的报文中携带DPU用户侧端口。
209、第二节点从帧中解封出报文，并将报文转发给第一节点。
其中，解封装为现有技术，目的为读取帧中携带的数据。
210、第一节点接收报文，并根据DPU用户侧端口查询关系映射表，得出虚拟AN用户侧端口和虚拟AN的IP地址。
其中，在解封出的报文中，可以得出DPU用户侧端口，根据DPU用户侧端口、DPU的ID查询关系映射表。查询关系映射表可以得出与DPU对应的虚拟AN用户侧端口和虚拟AN的IP地址。
211、第一节点修改报文中的DPU用户侧端口为虚拟AN用户侧端口，源IP地址改为虚拟AN的IP地址。
例如，如表1所示，代理节点接收DPU1发送的帧，根据查询结果，将解封出的报文中DPU1/port1修改为MxU1/slot1/port1，源IP地址改为10.66.93.110。
212、第一节点向管理系统发送报文。
其中，发送的报文携带虚拟AN用户侧端口和虚拟AN的IP地址。报文类型可以是PPPoE报文、DHCP报文、ANCP报文或SNMP报文等。
可选的，在如图3所示网络中，每个DPU都可以分配IP地址。如果DPU有IP地址，则在步骤202中建立关系映射表时，还包括DPU的IP地址表项，建立的关系映射表，如表2所示；在步骤204和步骤210中，需查询表2的关系映射表；在步骤205中，还需要将报文中的目的IP地址修改为DPU的IP地址。当代理节点处理下行数据时，方法流程如图6所示；当代理节点处理上行数据时，方法流程如图7所示。
表2：
Figure PCTCN2014088348-appb-000002
需要说明的是，在代理节点设置虚拟AN代理，来辅助管理系统对远端接 入节点进行控制和管理，最优选的方式为每个虚拟AN有一个IP地址，而不是每个远端接入节点都有一个IP地址，可以减少IP地址的分配和管理，降低运维成本。
可选的，代理节点还可以只包括一个节点，该节点可以为OLT或IP边缘节点，则上述数据处理的过程均在该节点上完成。
现有技术中，在原有网络中加入新类型(例如FTTDp)的接入网节点(即DPU)时，需要修改现有的管理系统，从而增加运维成本。与现有技术相比，本发明实施例在代理节点上设置虚拟AN代理，虚拟AN代理中建立关系映射表，包括虚拟AN的IP地址、虚拟AN用户侧端口和DPU用户侧端口的映射关系，虚拟AN是所述管理系统所能够管理的设备；处理下行数据时，第一节点接收管理系统发送的报文后，根据报文内容查询关系映射表，然后根据查询结果修改相应内容，并转发给第二节点，第二节点向对应的DPU发送所述报文；处理上行数据时，第二节点接收报文后转发给第一节点，第一节点查询关系映射表，并修改相应内容后，向管理系统发送报文。解决了现有技术中，增加了运维的成本，降低了用户使用网络服务的质量的问题。通过解决上述技术问题，不需要修改现有的管理系统，从而可以降低运维的成本，缩短系统集成时间，从而减少对其他用户产生影响，进一步地，还可将将多个远端接入节点虚拟成一个虚拟AN，由于运营商是以虚拟AN为单位进行管理和控制，而不再直接对大量远端接入节点进行管理维护，所以极大降低了运维成本。
本发明又一实施例提供一种代理节点40，如图8所示，所述代理节点40包括：
建立单元41，用于建立关系映射表，所述关系映射表包括虚拟接入节点AN的网络协议IP地址、虚拟AN用户侧端口和远端接入节点用户侧端口的映射关系，所述虚拟AN是所述管理系统所能够管理的设备；
接收单元42，用于接收管理系统发送的报文；
查询单元43，用于根据所述接收单元42接收的所述报文携带的第一参数 信息查询所述建立单元41建立的所述关系映射表，获得第二参数信息；
发送单元44，用于根据所述查询单元43查询的所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文。
其中，所述第一参数信息包括所述虚拟AN用户侧端口和目的IP地址，所述目的IP地址为所述虚拟AN的IP地址；所述第二参数信息包括所述远端接入节点用户侧端口。
进一步的，如图9所示，所述代理节点40还包括：
修改单元45，用于将所述接收单元42接收的所述报文中的所述虚拟AN用户侧端口修改为所述查询单元43得出的所述远端接入节点用户侧端口。
进一步的，如图9所示，所述发送单元44包括：
封装子单元441，用于将所述修改单元45修改的所述报文封装成帧，在所述帧中添加远端接入节点标识ID，所述远端接入节点标识ID根据所述远端接入节点用户侧端口得到，或者所述远端接入节点标识ID是根据所述虚拟AN用户侧端口和所述虚拟AN的IP地址查询所述关系映射表得到，所述关系映射表的映射关系中还包括所述远端接入节点标识ID；
发送子单元442，用于向对应的远端接入节点发送所述封装子单元441封装的所述帧。
其中，所述关系映射表的映射关系中还包括所述远端接入节点的IP地址；所述第二参数信息还包括所述远端接入节点的IP地址。
进一步的，所述修改单元45还用于：
将所述接收单元42接收的所述报文中的目的IP地址修改为所述查询单元43得出的所述远端接入节点的IP地址。
其中，所述关系映射表的映射关系还包括代理节点用户侧端口，所述第二参数信息还包括代理节点用户侧端口。所述代理节点代理对应至少两个所述远端接入节点。
可选的，所述代理节点至少包括第一节点和第二节点，所述第一节点建立所述关系映射表，接收所述报文，根据所述报文携带的第一参数信息查询 所述关系映射表，获得第二参数信息，将所述第二参数信息发送给所述第二节点；所述第二节点根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文。其中，所述关系映射表的映射关系中还包括所述远端接入节点标识ID；所述第一参数信息包括所述虚拟AN用户侧端口和所述虚拟AN的IP地址，所述第二参数信息包括所述远端接入节点ID、所述远端接入节点用户侧端口；所述第一节点将所述第二参数信息发送给所述第二节点，包括：所述第一节点将所述报文中的所述虚拟AN用户侧端口修改为所述远端接入节点用户侧端口，并将所述报文转发给所述第二节点，所述报文中携带所述远端接入节点ID、所述远端接入节点用户侧端口；所述第二节点根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文，包括：所述第二节点将从所述第一节点发来的所述报文封装成帧，在所述帧中添加所述远端接入节点ID；以及向对应的远端接入节点发送所述帧。
现有技术中，在原有网络中加入新类型(例如FTTDp)的接入网节点(即远端接入节点)时，需要修改现有的管理系统，从而增加运维成本。与现有技术相比，本发明实施例在代理节点40上设置了关系映射表，关系映射表包括虚拟AN的IP地址、虚拟AN用户侧端口和远端接入节点用户侧端口的映射关系，虚拟AN是所述管理系统所能够管理的设备；代理节点40接收管理系统发送的报文后，根据报文内容查询关系映射表；然后根据查询结果向对应的远端接入节点发送所述报文。解决了现有技术中，增加了运维的成本，降低了用户使用网络服务的质量的问题。通过解决上述技术问题，不需要修改现有的管理系统，从而可以降低运维的成本，缩短系统集成时间，从而减少对其他用户产生影响，进一步地，还可将将多个远端接入节点虚拟成一个虚拟AN，由于运营商是以虚拟AN为单位进行管理和控制，而不再直接对大量远端接入节点进行管理维护，所以极大降低了运维成本。
本发明又一实施例提供一种代理节点50，如图10所示，所述代理节点50包括：
处理器51，用于建立关系映射表，所述关系映射表包括虚拟接入节点AN的网络协议IP地址、虚拟AN用户侧端口和远端接入节点用户侧端口的映射关系，所述虚拟AN是所述管理系统所能够管理的设备；
接收器52，用于接收所述管理系统发送的报文；
所述处理器51还用于根据所述报文携带的第一参数信息查询所述关系映射表，获得第二参数信息；
发送器53，用于根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文。
其中，所述第一参数信息包括所述虚拟AN用户侧端口和目的IP地址，所述目的IP地址为所述虚拟AN的IP地址；所述第二参数信息包括所述远端接入节点用户侧端口。
进一步的，所述处理器51还用于将所述报文中的所述虚拟AN用户侧端口修改为所述远端接入节点用户侧端口。
进一步的，所述处理器51还用于将所述报文封装成帧，在所述帧中添加远端接入节点标识ID，所述远端接入节点标识ID根据所述远端接入节点用户侧端口得到，或者所述远端接入节点标识ID是根据所述虚拟AN用户侧端口和所述虚拟AN的IP地址查询所述关系映射表得到，所述关系映射表的映射关系中还包括所述远端接入节点标识ID；
所述发送器53还用于向对应的远端接入节点发送所述帧。
其中，所述关系映射表的映射关系中还包括所述远端接入节点的IP地址；所述第二参数信息还包括所述远端接入节点的IP地址。
进一步的，所述处理器51还用于将所述报文中的目的IP地址修改为所述远端接入节点的IP地址。
其中，所述关系映射表的映射关系还包括代理节点用户侧端口，所述第二参数信息还包括代理节点用户侧端口。所述代理节点对应至少两个所述远端接入节点。
可选的，所述代理节点至少包括第一节点和第二节点，所述第一节点建 立所述关系映射表，接收所述报文，根据所述报文携带的第一参数信息查询所述关系映射表，获得第二参数信息，将所述第二参数信息发送给所述第二节点；所述第二节点根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文。其中，所述关系映射表的映射关系中还包括所述远端接入节点标识ID；所述第一参数信息包括所述虚拟AN用户侧端口和所述虚拟AN的IP地址，所述第二参数信息包括所述远端接入节点ID、所述远端接入节点用户侧端口；所述第一节点将所述第二参数信息发送给所述第二节点，包括：所述第一节点将所述报文中的所述虚拟AN用户侧端口修改为所述远端接入节点用户侧端口，并将所述报文转发给所述第二节点，所述报文中携带所述远端接入节点ID、所述远端接入节点用户侧端口；所述第二节点根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文，包括：所述第二节点将从所述第一节点发来的所述报文封装成帧，在所述帧中添加所述远端接入节点ID；以及向对应的远端接入节点发送所述帧。
现有技术中，在原有网络中加入新类型(例如FTTDp)的接入网节点(即远端接入节点)时，需要修改现有的管理系统，从而增加运维成本。与现有技术相比，本发明实施例在代理节点50上设置关系映射表，关系映射表包括虚拟AN的IP地址、虚拟AN用户侧端口和远端接入节点用户侧端口的映射关系，虚拟AN是管理系统所能够管理的设备；代理节点50接收管理系统发送的报文后，根据报文内容查询关系映射表；然后根据查询结果向对应的远端接入节点发送所述报文。解决了现有技术中，增加了运维的成本，降低了用户使用网络服务的质量的问题。通过解决上述技术问题，不需要修改现有的管理系统，从而可以降低运维的成本，缩短系统集成时间，从而减少对其他用户产生影响，进一步地，还可将将多个远端接入节点虚拟成一个虚拟AN，由于运营商是以虚拟AN为单位进行管理和控制，而不再直接对大量远端接入节点进行管理维护，所以极大降低了运维成本。
本发明实施例提供的一种代理节点可以实现上述提供的方法实施例，具体功能实现请参见方法实施例中的说明，在此不再赘述。本发明实施例提供 的一种接入网虚拟化的方法及代理节点可以适用于代理节点，但不仅限于此。
本说明书中的各个实施例均采用递进的方式描述，各个实施例之间相同相似的部分互相参见即可，每个实施例重点说明的都是与其他实施例的不同之处。尤其，对于设备实施例而言，由于其基本相似于方法实施例，所以描述得比较简单，相关之处参见方法实施例的部分说明即可。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
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，可轻易想到的变化或替换，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该以权利要求的保护范围为准。

Claims (20)

  1. 一种接入网虚拟化的方法，应用于远端接入节点、代理节点和管理系统所组成的系统中，其特征在于，包括：
    所述代理节点建立关系映射表，所述关系映射表包括虚拟接入节点AN的网络协议IP地址、虚拟AN用户侧端口和远端接入节点用户侧端口的映射关系，所述虚拟AN是所述管理系统所能够管理的设备；
    接收所述管理系统发送的报文；
    根据所述报文携带的第一参数信息查询所述关系映射表，获得第二参数信息；
    根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文。
  2. 根据权利要求1所述的方法，其特征在于，所述第一参数信息包括所述虚拟AN用户侧端口和目的IP地址，所述目的IP地址为所述虚拟AN的IP地址；
    所述第二参数信息包括所述远端接入节点用户侧端口。
  3. 根据权利要求2所述的方法，其特征在于，在所述获得第二参数信息之后，所述方法还包括：
    将所述报文中的所述虚拟AN用户侧端口修改为所述远端接入节点用户侧端口。
  4. 根据权利要求3所述的方法，其特征在于，所述根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文包括：
    将所述报文封装成帧，在所述帧中添加远端接入节点标识ID，所述远端接入节点标识ID根据所述远端接入节点用户侧端口得到，或者所述远端接入节点标识ID是根据所述虚拟AN用户侧端口和所述虚拟AN的IP地址查询所述关系映射表得到，所述关系映射表的映射关系中还包括所述远端接入节点标识ID；
    向对应的远端接入节点发送所述帧。
  5. 根据权利要求1所述的方法，其特征在于，所述代理节点至少包括第一节点和第二节点，所述第一节点建立所述关系映射表，接收所述报文，根据所述报文携带的所述第一参数信息查询所述关系映射表，获得所述第二参数信息，将所述第二参数信息发送给所述第二节点；
    所述第二节点根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文。
  6. 根据权利要求5所述的方法，其特征在于，所述关系映射表的映射关系中还包括所述远端接入节点标识ID；
    所述第一参数信息包括所述虚拟AN用户侧端口和所述虚拟AN的IP地址，所述第二参数信息包括所述远端接入节点ID、所述远端接入节点用户侧端口；
    所述第一节点将所述第二参数信息发送给所述第二节点，包括：
    所述第一节点将所述报文中的所述虚拟AN用户侧端口修改为所述远端接入节点用户侧端口，并将所述报文转发给所述第二节点，所述报文中携带所述远端接入节点ID、所述远端接入节点用户侧端口；
    所述第二节点根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文，包括：
    所述第二节点将从所述第一节点发来的所述报文封装成帧，在所述帧中添加所述远端接入节点ID；以及向对应的远端接入节点发送所述帧。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述关系映射表的映射关系中还包括所述远端接入节点的IP地址；
    所述第二参数信息还包括所述远端接入节点的IP地址。
  8. 根据权利要求7所述的方法，其特征在于，在所述将所述报文封装成帧，在所述帧中添加远端接入节点标识ID之前，所述方法还包括：
    将所述报文中的目的IP地址修改为所述远端接入节点的IP地址。
  9. 根据权利要求1-8任一项所述的方法，其特征在于，所述关系映射表的映射关系还包括代理节点用户侧端口，所述第二参数信息还包括所述代理节 点用户侧端口。
  10. 根据权利要求1-9任一项所述的方法，其特征在于，所述代理节点对应至少两个所述远端接入节点。
  11. 一种代理节点，其特征在于，包括：
    建立单元，用于建立关系映射表，所述关系映射表包括虚拟接入节点AN的网络协议IP地址、虚拟AN用户侧端口和远端接入节点用户侧端口的映射关系，所述虚拟AN是所述管理系统所能够管理的设备；
    接收单元，用于接收管理系统发送的报文；
    查询单元，用于根据所述接收单元接收的所述报文携带的第一参数信息查询所述建立单元建立的所述关系映射表，获得第二参数信息；
    发送单元，用于根据所述查询单元查询的所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文。
  12. 根据权利要求11所述的代理节点，其特征在于，所述第一参数信息包括所述虚拟AN用户侧端口和目的IP地址，所述目的IP地址为所述虚拟AN的IP地址；
    所述第二参数信息包括所述远端接入节点用户侧端口。
  13. 根据权利要求12所述的代理节点，其特征在于，所述代理节点还包括：
    修改单元，用于将所述接收单元接收的所述报文中的所述虚拟AN用户侧端口修改为所述查询单元得出的所述远端接入节点用户侧端口。
  14. 根据权利要求13所述的代理节点，其特征在于，所述发送单元包括：
    封装子单元，用于将所述修改单元修改的所述报文封装成帧，在所述帧中添加远端接入节点标识ID，所述远端接入节点标识ID根据所述远端接入节点用户侧端口得到，或者所述远端接入节点标识ID是根据所述虚拟AN用户侧端口和所述虚拟AN的IP地址查询所述关系映射表得到，所述关系映射表的映射关系中还包括所述远端接入节点标识ID；
    发送子单元，用于向对应的远端接入节点发送所述封装子单元封装的所 述帧。
  15. 根据权利要求11所述的代理节点，其特征在于，所述代理节点至少包括第一节点和第二节点，所述第一节点建立所述关系映射表，接收所述报文，根据所述报文携带的所述第一参数信息查询所述关系映射表，获得所述第二参数信息，将所述第二参数信息发送给所述第二节点；
    所述第二节点根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文。
  16. 根据权利要求15所述的代理节点，其特征在于，所述关系映射表的映射关系中还包括所述远端接入节点标识ID；
    所述第一参数信息包括所述虚拟AN用户侧端口和所述虚拟AN的IP地址，所述第二参数信息包括所述远端接入节点ID、所述远端接入节点用户侧端口；
    所述第一节点将所述第二参数信息发送给所述第二节点，包括：
    所述第一节点将所述报文中的所述虚拟AN用户侧端口修改为所述远端接入节点用户侧端口，并将所述报文转发给所述第二节点，所述报文中携带所述远端接入节点ID、所述远端接入节点用户侧端口；
    所述第二节点根据所述第二参数信息，向与所述第二参数信息对应的远端接入节点发送所述报文，包括：
    所述第二节点将从所述第一节点发来的所述报文封装成帧，在所述帧中添加所述远端接入节点ID；以及向对应的远端接入节点发送所述帧。
  17. 根据权利要求11-16任一项所述的代理节点，其特征在于，所述关系映射表的映射关系中还包括所述远端接入节点的IP地址；
    所述第二参数信息还包括所述远端接入节点的IP地址。
  18. 根据权利要求17所述的代理节点，其特征在于，所述修改单元还用于将所述接收单元接收的所述报文中的目的IP地址修改为所述查询单元得出的所述远端接入节点的IP地址。
  19. 根据权利要求11-18任一项所述的代理节点，其特征在于，所述关系映射表的映射关系还包括代理节点用户侧端口，所述第二参数信息还包括所 述代理节点用户侧端口。
  20. 根据权利要求11-19任一项所述的代理节点，其特征在于，所述代理节点代理对应至少两个所述远端接入节点。
PCT/CN2014/088348 2013-11-13 2014-10-11 接入网虚拟化的方法及代理节点 WO2015070681A1 (zh)

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US20160261556A1 (en) 2016-09-08
US20190028428A1 (en) 2019-01-24
EP3059904A1 (en) 2016-08-24
CN104639413A (zh) 2015-05-20
US10116620B2 (en) 2018-10-30
EP3528437A1 (en) 2019-08-21
EP3059904A4 (en) 2016-09-21
CN104639413B (zh) 2018-10-09
US10728214B2 (en) 2020-07-28
EP3528437B1 (en) 2021-12-01
EP3059904B1 (en) 2019-02-06

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