WO2016058329A1 - 业务传送方法及装置 - Google Patents

业务传送方法及装置 Download PDF

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Publication number
WO2016058329A1
WO2016058329A1 PCT/CN2015/074532 CN2015074532W WO2016058329A1 WO 2016058329 A1 WO2016058329 A1 WO 2016058329A1 CN 2015074532 W CN2015074532 W CN 2015074532W WO 2016058329 A1 WO2016058329 A1 WO 2016058329A1
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node
tunnel
nodes
forwarding table
network
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PCT/CN2015/074532
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English (en)
French (fr)
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刘国满
曲延锋
廖婷
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中兴通讯股份有限公司
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Publication of WO2016058329A1 publication Critical patent/WO2016058329A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks

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  • the present invention relates to the field of communications, and in particular to a service delivery method and apparatus.
  • IP RAN Internet Protocol Radio Access Network
  • the internal gateway protocol Interior Gateway Protocol, IGP for short
  • the optimal path is calculated according to the routing algorithm, and the routing signaling protocol such as the Label Distribution Protocol (LDP) is used.
  • LDP Label Distribution Protocol
  • a plug-and-play method is required to automatically establish and configure an IP RAN network service channel on an Ethernet unnumbered interface.
  • the embodiment of the invention provides a service transmission method and device, so as to at least solve the problem that a large amount of manual configuration is required in the IP RAN network service channel in the related art.
  • a service delivery method including: a first node generates a routing forwarding table that reaches other nodes according to an entire network topology, and according to the destination node address in the routing forwarding table and the node A tunnel forwarding table is set up by the corresponding tunnel identifier ID. The first node performs service transmission according to the tunnel ID on the service packet and the tunnel forwarding table.
  • the method before the first node establishes a tunnel forwarding table according to the destination node address in the routing forwarding table and the tunnel ID corresponding to the node, the method further includes: acquiring, by the first node, a tunnel ID of the other node a unique identifier of the other node; the first node generates a unique identifier of each of the other nodes and the node Corresponding relationship table of the corresponding tunnel ID, wherein the unique identifier of the other node is set to search for the destination node address corresponding to the other node in the routing forwarding table.
  • the acquiring, by the first node, the tunnel ID of the other node includes: the first node receiving a tunnel of the other node that is advertised by the neighboring other node through an internal gateway protocol IGP multicast packet The ID and the unique identifier of the other node; and/or the first node issues a tunnel ID of all nodes on the network and a unique identifier of the other nodes through the route update of the IGP protocol.
  • the acquiring, by the first node, the tunnel ID of the other node includes: receiving, by the first node, a tunnel ID of the other node that is advertised by the other node in a TLV packet format, and the The unique identifier of the other node; and/or the first node in the TLV message format is used to update the tunnel ID of all nodes on the network and the unique identifier of the other nodes through the route update of the IGP protocol.
  • the unique identifier includes at least one of the following: a management loopback IP address, and a routing router ID.
  • the method before the first node acquires the tunnel ID of the other node, the method further includes: after the node opens the DCN channel of the network management data communication network, the network management system NMS passes the DCN channel to the Each node sends the tunnel ID; or the controller sends the tunnel ID to each node on the network by controlling the connection channel.
  • the first node generates a routing forwarding table that reaches the other nodes according to the entire network topology: the first node calculates an optimal path to the other nodes according to the topology of the entire network, and according to the The optimal path generates a routing forwarding table that arrives at the other nodes.
  • the tunnel ID includes at least one of the following: a multi-protocol label switching MPLS label, and a virtual local area network VLAN.
  • a service delivery apparatus which is located at a first node, and includes: a channel establishment module, configured to generate a routing forwarding table that reaches other nodes according to the entire network topology, and according to the routing The published destination node address establishes a tunnel forwarding table with the tunnel identifier ID corresponding to the node; the service delivery module is configured to perform service transmission according to the tunnel ID on the service packet and the tunnel forwarding table.
  • the device further includes: an obtaining module, configured to acquire a tunnel ID of the other node and a unique identifier of the other node; and a generating module, configured to generate a unique identifier of each of the other nodes and the Corresponding relationship table of the tunnel ID corresponding to the node, wherein the unique identifier of the other node is set to find the destination node address corresponding to the other node in the routing forwarding table.
  • an obtaining module configured to acquire a tunnel ID of the other node and a unique identifier of the other node
  • a generating module configured to generate a unique identifier of each of the other nodes and the Corresponding relationship table of the tunnel ID corresponding to the node, wherein the unique identifier of the other node is set to find the destination node address corresponding to the other node in the routing forwarding table.
  • the acquiring module is configured to: receive a tunnel ID of the other node that is advertised by the neighboring other node through an internal gateway protocol IGP multicast message, and a unique identifier of the other node; and/or The LSA learned through the routing update of the IGP protocol learns the tunnel ID of all nodes on the network and the unique identifier of the other nodes.
  • the unique identifier includes at least one of the following: a management loopback IP address, and a routing router ID.
  • the channel establishing module is configured to: calculate an optimal path to the other node according to the topology of the entire network, and generate a routing forwarding table that reaches the other node according to the optimal path.
  • the tunnel ID includes at least one of the following: a multi-protocol label switching MPLS label, and a virtual local area network VLAN.
  • the first node is configured to generate a routing forwarding table that reaches the other node according to the entire network topology, and establish a tunnel forwarding table according to the destination node address in the routing forwarding table and the tunnel ID corresponding to the node;
  • the first node performs the service transmission manner according to the tunnel ID on the service packet and the tunnel forwarding table, and solves the problem that a large number of manual configurations are required in the IP RAN network service channel in the related art, and the device is plug and play.
  • the function greatly facilitates the establishment of the service channel of the IP RAN network, saving the labor and time cost brought by the manual configuration.
  • FIG. 1 is a flowchart of a service delivery method according to an embodiment of the present invention.
  • FIG. 2 is a structural block diagram of a service delivery apparatus according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a system module relationship in accordance with a preferred embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an automatic node label forwarding channel automatic establishment according to a preferred embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a format of a network element information TLV package according to a preferred embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a format of an IGP P2P flooding multicast packet according to a preferred embodiment of the present invention.
  • FIG. 7 is a schematic diagram of automatic establishment of a delete node label forwarding channel according to a preferred embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a node forwarding label allocation process in accordance with a preferred embodiment of the present invention.
  • FIG. 9 is a schematic diagram of an IP RAN zero configuration plug and play flow in accordance with a preferred embodiment of the present invention.
  • FIG. 1 is a flowchart of a service delivery method according to an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps:
  • Step S102 The first node generates a routing forwarding table that reaches the other node according to the entire network topology, and establishes a tunnel forwarding table according to the destination node address in the routing forwarding table and the tunnel ID corresponding to the node.
  • Step S104 The first node performs service transmission according to the tunnel ID on the service packet and the tunnel forwarding table.
  • any node in the network (ie, the first node) generates a routing forwarding table that reaches other nodes according to the entire network topology, and according to the destination node address in the routing forwarding table, the tunnel corresponding to the node.
  • the ID establishes a tunnel forwarding table, and then, in the process of processing the service, the service is transmitted according to the tunnel ID of the service packet and the tunnel forwarding table, so that only the tunnel ID of other nodes on the service packet needs to be obtained.
  • the first node before the first node establishes tunnel forwarding according to the destination node address in the routing forwarding table and the tunnel ID corresponding to the node, the first node first acquires the tunnel ID of the other node and the a unique identifier of the other node, which in turn generates a correspondence table between the unique identifier of each of the other nodes and the tunnel ID corresponding to the node, where the unique identifier of the other node is set to look for the other in the routing forwarding table The destination node address corresponding to the node.
  • the unique identifier described in this embodiment may include at least one of the following: a management loopback IP address, and a router ID.
  • the first node may obtain the tunnel ID of the other node and the unique identifier of the other node in the following two manners:
  • the first node may receive a tunnel ID of the other node advertised by the neighboring other node through the IGP multicast message and a unique identifier of the other node; and/or, for the network All the nodes, the first node can learn the tunnel ID of all nodes on the network and the unique identifier of the other nodes through the Link State Advertisement (LSA, also referred to as link state advertisement) of the IGP protocol. .
  • LSA Link State Advertisement
  • the first node may receive the management loopback IP address of the other node advertised by the adjacent other node in a TLV (Type, Length, Value, Type Length Value) message format, and the other node a unique identifier (a tunnel ID, and a router ID); and/or the first node in the TLV packet format to update the tunnel ID of all nodes on the network through the routing update of the IGP protocol and the other The unique identifier of the node (tunnel ID, and router ID).
  • TLV Type, Length, Value, Type Length Value
  • each node itself may obtain the tunnel ID by acquiring the following two tunnel IDs:
  • the network management system sends the information to each node through the DCN channel.
  • Tunnel ID or,
  • the controller sends the tunnel ID to each node on the network by using a control connection channel.
  • the first node generates a route forwarding table that arrives at other nodes according to the entire network topology.
  • the first node calculates the optimality of reaching the other nodes according to the topology of the entire network. a path, and generating a routing forwarding table to the other node according to the optimal path.
  • the tunnel ID may include, but is not limited to, at least one of the following: a multiple protocol label switch (MPLS) label, and a virtual local area network (VLAN).
  • MPLS multiple protocol label switch
  • VLAN virtual local area network
  • a service delivery device is further provided, which is located at the first node, and is configured to implement the foregoing embodiments and preferred embodiments, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 2 is a structural block diagram of a service delivery apparatus according to an embodiment of the present invention. As shown in FIG. 2, the apparatus includes a channel establishment module 22 and a service delivery module 24. The following describes each module in detail:
  • the channel establishing module 22 is configured to generate a routing forwarding table that reaches the other node according to the entire network topology, and establish a tunnel forwarding table according to the destination node address in the routing forwarding table and the tunnel identification ID corresponding to the node; the service delivery module 24 And connected to the channel establishment module 22, configured to perform service transmission according to the tunnel ID on the service packet and the tunnel forwarding table.
  • the device may further include: an acquiring module, configured to acquire a tunnel ID of the other node and a unique identifier of the other node; and a generating module, connected to the acquiring module and the channel establishing module 22, and configured to And generating a correspondence table between the unique identifiers of the other nodes and the tunnel IDs corresponding to the nodes, where the unique identifiers of the other nodes are set to search for the destination node addresses corresponding to the other nodes in the routing forwarding table.
  • an acquiring module configured to acquire a tunnel ID of the other node and a unique identifier of the other node
  • a generating module connected to the acquiring module and the channel establishing module 22, and configured to And generating a correspondence table between the unique identifiers of the other nodes and the tunnel IDs corresponding to the nodes, where the unique identifiers of the other nodes are set to search for the destination node addresses corresponding to the other nodes in the routing forwarding table.
  • the acquiring module may be specifically configured to: receive a tunnel ID of the other node that is advertised by the neighboring other node through an internal gateway protocol IGP multicast message, and a unique identifier of the other node; and / or, through the routing update of the IGP protocol, the LSA learns the tunnel ID of all nodes on the network and the unique identifier of the other nodes.
  • the channel establishing module 22 may be specifically configured to calculate an optimal path to the other node according to the topology of the entire network, and generate a routing forwarding table that reaches the other node according to the optimal path.
  • the tunnel ID may include, but is not limited to, at least one of the following: an MPLS label, a VLAN, and the like.
  • a method and apparatus for automatic configuration based on an IP RAN service channel are provided, which can implement a plug and play function in an IP RAN scenario, specifically, for accessing in a current IP RAN network.
  • the technology is to implement the automatic configuration and establishment of the service channel on the Ethernet unnumbered interface, which facilitates the automatic configuration and establishment of the service channel of the IP RAN unnumbered network.
  • FIG. 3 is a schematic diagram of a system module relationship according to a preferred embodiment of the present invention. As shown in FIG. 3, the above several modules are described in detail as follows:
  • the notification module The module advertises the router ID, the management loopback IP address, and the tunnel ID assigned to the node to the neighboring node through the network management DCN channel through the IGP multicast mode.
  • a node When a node receives an IGP multicast packet sent by another node, it can learn the router ID, management IP address, and tunnel ID assigned by the node (for example, MPLS label (Label)). And other information, on the other hand, you can learn the router ID of the non-adjacent node on the network, the management IP address and the assigned tunnel ID and other network routing topology information to form the routing table information of the local node;
  • MPLS label MPLS label
  • the module mainly calculates an optimal path for each node to other destination nodes according to the routing table information that the node learns to reach other nodes, and establishes the node to each according to the relevant routing strategy and algorithm.
  • the local routing forwarding table of the destination node the routing forwarding table of the destination node has a one-to-one correspondence with the tunnel forwarding table of the node to the destination node, so that the service channel with the tunnel ID as the matching item is automatically generated on the local node. ;
  • FIG. 4 is a schematic diagram of an automatic establishment of a node label forwarding channel according to a preferred embodiment of the present invention.
  • an implementation method for automatically establishing a zero-configuration service channel the main process thereof is as shown in FIG. 4; its program mainly includes the following features or processes:
  • each node configures or automatically generates information such as the router ID and the loopback address of the local node, and saves it on the local node.
  • the unique tunnel ID information is assigned.
  • MPLS label, VLAN, etc. can be assigned in two ways: after each node opens the DCN channel, the network management system (NMS) sends the tunnel ID to each node through the DCN channel; the other is controlled by the controller.
  • NMS network management system
  • a unique tunnel ID is sent to each node on the network by controlling a connection channel, such as a transmission control protocol (Transmission Control Procotol, TCP) or a transport layer security (TLS).
  • TCP Transmission Control Procotol
  • TLS transport layer security
  • FIG. 5 is preferred according to the present invention.
  • FIG. 6 is a schematic diagram of a format of an IGP P2P flooded multicast packet according to a preferred embodiment of the present invention. As shown in FIG. 5 and FIG. 6 , the packet is encapsulated into an IGP protocol packet, and then The IGP multicast mode (for example, 224.0.0.5) is sent to all its neighboring nodes through the DCN channel.
  • the multicast frame format is shown in Figure 5.
  • the node on the network receives the IGP protocol multicast packet sent by its neighboring node, it can learn the neighboring TLV information such as the loopback IP address and the tunnel ID based on the router ID carried in the packet.
  • the router ID of the node manages the information such as the loopback IP address and the tunnel ID.
  • LSA IGP protocol route update advertisement
  • you can learn the routing information of other nodes on the network such as hop count, cost (COST), and reachability. Information, etc.
  • information such as the router ID, management IP address, and specific assigned tunnel ID of all nodes on the network;
  • each node can calculate an optimal forwarding path from the node to other nodes according to the learning routing table of other nodes. Since the tunnel ID assigned by each node is unique, the corresponding tunnel forwarding path is consistent with the routing forwarding path to the node, and a tunnel forwarding table to each other node on the network is automatically generated on the node, and the tunnel is automatically established.
  • the forwarding channel is not required to establish a label forwarding tunnel through a signaling protocol such as LDP or Resource Reservation Protocol (RSVP).
  • the method and the device are not required to be configured on the network, and the service channel is automatically opened and established on the Ethernet unnumbered interface to implement the device plug and play function. ;
  • a node insertion scenario is taken as an example for detailed description.
  • the network structure shown in FIG. 4 is taken as an example. Specifically, when a new device is connected to the network, how to implement the label forwarding channel by extending the OSPF protocol. To achieve device plug and play function:
  • an A1 access node when an A1 access node just joins the IP RAN network as shown in Figure 4, the A1 node will configure the router ID, bridge MAC, and system column number according to the default configuration of the original device.
  • the information automatically forms a management loopback IP address.
  • the local node OSPF protocol process is started, and the DCN VRF (4094) and Point to Point (P2P) port types are set.
  • P2P Point to Point
  • the A1 node starts the OSPF protocol, and automatically creates the DCN VRF and sets the port P2P type.
  • A1 encapsulates the router ID, management IP address, and label information of the local node into the OSPF multicast (224.0.0.5) packet.
  • the DCN VRF (4094) channel is sent to the A1 neighboring nodes A2 and A4 nodes;
  • the A2 and A4 nodes can learn the router ID of the A1 node, manage the IP and label information, save the routing information to the A1 node, and learn new information.
  • the information to the A1 node is advertised to A2 and A4 neighboring nodes A3 through OSPF multicast mode.
  • the A2 and A4 nodes advertise their original routing information and the local router ID, management IP, and label information to the A1 node;
  • the A1 node calculates an optimal path for each of the other nodes on the network according to the related routing policy, and generates a routing forwarding table. For example, if the destination node is B, the hop count may be selected to be less. Forwarded on the INT1 port; and for the destination node A6, the INT2 port with a smaller number of hops can be selected for forwarding, as shown in FIG. 4;
  • the routing forwarding table addressed by the IP address of each node is managed according to each node. It is consistent with the label forwarding table that is addressed according to the label of each node.
  • the routing forwarding table can be directly mapped out of the label forwarding table to automatically establish a service channel for service forwarding.
  • FIG. 7 is a schematic diagram of automatically deleting a node label forwarding channel according to a preferred embodiment of the present invention.
  • the structure shown in FIG. 7 is taken as an example to describe the appearance of the A1 on the IP RAN network. How to re-establish the label forwarding channel of other nodes in case of failure or power failure;
  • the neighboring nodes A2 and A4 on both sides of A1 will detect the loss of the connection of A1, delete the router ID of the A1 node from the neighboring node information database, manage the IP address and the location.
  • the information such as the label is assigned, and the routing table information is changed.
  • the next hop information of the destination node B is changed from A1 to A4, and the changed routing information is passed through the OSPF group.
  • Broadcast mode (224.0.0.5) sends its new neighbor nodes A3 and A4 nodes;
  • FIG. 8 is a schematic diagram of a node forwarding label allocation process according to a preferred embodiment of the present invention.
  • FIG. 8 is an example of how the IP RAN network node allocates the entire network.
  • the NMS network management system and the DCN channel respectively identify the MPLS label or VLAN assigned by each node.
  • the information is encapsulated into an IP packet and sent to each node for distribution through a standard Ethernet frame.
  • the controller may configure a unique forwarding label or identifier for each of the A1, A2, A3, and B nodes through a channel such as TLS or TCP.
  • FIG. 9 is a schematic diagram of an IP RAN zero configuration plug-and-play process according to a preferred embodiment of the present invention.
  • the overall process is shown in FIG. 9.
  • a management IP address can be automatically generated, and a DCN channel can be created by itself; Routing protocol, which implements the router id, management IP address advertisement and learning.
  • the label forwarding channel is automatically established between the access node and the aggregation node.
  • the LSP static or LDP is not required.
  • the resource reservation protocol based on the traffic engineering extension (Resource Reservation) Static configuration such as Protocol-Traffic Engineering (referred to as RSVP-TE).
  • RSVP-TE Protocol-Traffic Engineering
  • a software is provided that is configured to perform the technical solutions described in the above embodiments and preferred embodiments.
  • a storage medium in which the above software is stored, including but not limited to an optical disk, a floppy disk, a hard disk, an erasable memory, and the like.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from The steps shown or described are performed sequentially, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.
  • a service transmission method and apparatus provided by an embodiment of the present invention have the following beneficial effects: solving the problem that a large number of manual configurations are required in the IP RAN network service channel in the related art, and implementing the device plug and play function. It greatly facilitates the establishment of service channels of the IP RAN network, saving labor and time costs caused by manual configuration.

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Abstract

本发明公开了一种业务传送方法及装置，其中，该方法包括：第一节点根据整个网络拓扑结构生成到达其他节点的路由转发表，并根据所述路由转发表中的目的节点地址与该节点对应的隧道ID建立隧道转发表；所述第一节点根据业务报文上的隧道ID和所述隧道转发表，进行业务传送。通过本发明，解决了相关技术中IP RAN网络业务通道中需要大量的手动配置的问题，实现了设备即插即用功能，大大方便了IP RAN网络的业务通道建立，节省了手动配置带来的人工以及时间成本。

Description

业务传送方法及装置 技术领域
本发明涉及通信领域，具体而言，涉及一种业务传送方法及装置。
背景技术
在当前无线接入网IP化(Internet Protocol Radio Access Network，简称为IP RAN)网络业务通道配置和建立中，主要通过手动或网管方式对节点上各个端口的地址进行配置或设定，并在每个节点上启动内部网关协议(Interior Gateway Protocol，简称为IGP)进行网络拓扑学习，根据路由算法，计算出最优路径，再通过标签分发协议(Label Distribution Protocol，简称为LDP)等路由信令协议建立业务通道；或者手动或网管方式对IP RAN网络上每个接入节点和汇聚节点之间静态配置一条业务通道；随着网络规模的扩大，特别是IP RAN网络，存在大量的接入节点，若采用手动方式进行端口地址配置和动态或静态方式配置业务通道，会带来大量的配置和管理方面工作。当前需要一种即插即用的方法，在以太网无编号接口上，进行IP RAN网络业务通道自动建立和配置。
针对相关技术中IP RAN网络业务通道中需要大量的手动配置的问题，目前尚未提出有效的解决方案。
发明内容
本发明实施例提供了一种业务传送方法及装置，以至少解决相关技术中IP RAN网络业务通道中需要大量的手动配置的问题。
根据本发明的一个实施例，提供了一种业务传送方法，包括：第一节点根据整个网络拓扑结构生成到达其他节点的路由转发表，并根据所述路由转发表中的目的节点地址与该节点对应的隧道标识ID建立隧道转发表；所述第一节点根据业务报文上的隧道ID和所述隧道转发表，进行业务传送。
本实施例中，在第一节点根据所述路由转发表中的目的节点地址与该节点对应的隧道ID建立隧道转发表之前，还包括：所述第一节点获取所述其他节点的隧道ID和所述其他节点的唯一标识；所述第一节点生成各个所述其他节点的唯一标识与该节点 对应的隧道ID的对应关系表，其中，所述其他节点的唯一标识设置为在所述路由转发表中查找所述其他节点对应的目的节点地址。
本实施例中，所述第一节点获取所述其他节点的隧道ID包括：所述第一节点接收相邻的所述其他节点通过内部网关协议IGP组播报文通告的所述其他节点的隧道ID和所述其他节点的唯一标识；和/或，所述第一节点通过IGP协议的路由更新发布LSA学习到网络上所有节点的隧道ID和所述其他节点的唯一标识。
本实施例中，所述第一节点获取所述其他节点的隧道ID包括：所述第一节点接收相邻的所述其他节点以TLV报文格式通告的所述其他节点的隧道ID和所述其他节点的唯一标识；和/或，所述第一节点以TLV报文格式通过IGP协议的路由更新发布LSA学习到网络上所有节点的隧道ID和所述其他节点的唯一标识。
本实施例中，所述唯一标识包括以下至少之一：管理环回IP地址、路由Router ID。
本实施例中，在所述第一节点获取所述其他节点的隧道ID之前，还包括：每个节点在打通网管数据通信网络DCN通道后，由网络管理系统NMS通过所述DCN通道向所述每个节点下发所述隧道ID；或者，由控制器通过控制连接通道向网络上所述每个节点下发所述隧道ID。
本实施例中，第一节点根据整个网络拓扑结构生成到达其他节点的路由转发表包括：所述第一节点根据所述整个网络的拓扑结构计算到达所述其他节点的最优路径，并根据所述最优路径生成到达所述其他节点的路由转发表。
本实施例中，所述隧道ID包括以下至少之一：多协议标签交换MPLS标签，虚拟局域网VLAN。
根据本发明的另一实施例，提供了一种业务传送装置，位于第一节点，包括：通道建立模块，设置为根据整个网络拓扑结构生成到达其他节点的路由转发表，并根据所述路由转发表中的目的节点地址与该节点对应的隧道标识ID建立隧道转发表；业务传送模块，设置为根据业务报文上的隧道ID和所述隧道转发表，进行业务传送。
本实施例中，所述装置还包括：获取模块，设置为获取所述其他节点的隧道ID和所述其他节点的唯一标识；以及生成模块，设置为生成各个所述其他节点的唯一标识与该节点对应的隧道ID的对应关系表，其中，所述其他节点的唯一标识设置为在所述路由转发表中查找所述其他节点对应的目的节点地址。
本实施例中，所述获取模块设置为：接收相邻的所述其他节点通过内部网关协议IGP组播报文通告的所述其他节点的隧道ID和所述其他节点的唯一标识；和/或，通过IGP协议的路由更新发布LSA学习到网络上所有节点的隧道ID和所述其他节点的唯一标识。
本实施例中，所述唯一标识包括以下至少之一：管理环回IP地址、路由Router ID。
本实施例中，所述通道建立模块设置为：根据所述整个网络的拓扑结构计算到达所述其他节点的最优路径，并根据所述最优路径生成到达所述其他节点的路由转发表。
本实施例中，所述隧道ID包括以下至少之一：多协议标签交换MPLS标签，虚拟局域网VLAN。
通过本发明实施例，采用第一节点根据整个网络拓扑结构生成到达其他节点的路由转发表，并根据所述路由转发表中的目的节点地址与该节点对应的隧道ID建立隧道转发表；所述第一节点根据业务报文上的隧道ID和所述隧道转发表，进行业务传送的方式，解决了相关技术中IP RAN网络业务通道中需要大量的手动配置的问题，实现了设备即插即用功能，大大方便了IP RAN网络的业务通道建立，节省了手动配置带来的人工以及时间成本。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据本发明实施例的业务传送方法的流程图；
图2是根据本发明实施例的业务传送装置的结构框图；
图3是根据本发明优选实施例的系统模块关系的示意图；
图4是根据本发明优选实施例的增加节点标签转发通道自动建立的示意图；
图5是根据本发明优选实施例的网元信息TLV封装格式示意图；
图6是根据本发明优选实施例的IGP P2P洪泛组播报文格式的示意图；
图7是根据本发明优选实施例的删除节点标签转发通道自动建立示意图；
图8是根据本发明优选实施例的节点转发标签分配过程的示意图；
图9是根据本发明优选实施例的IP RAN零配置即插即用流程示意图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
在本实施例中，提供了一种业务传送方法，图1是根据本发明实施例的业务传送方法的流程图，如图1所示，该方法包括如下步骤：
步骤S102，第一节点根据整个网络拓扑结构生成到达其他节点的路由转发表，并根据所述路由转发表中的目的节点地址与该节点对应的隧道ID建立隧道转发表；
步骤S104，所述第一节点根据业务报文上的隧道ID和所述隧道转发表，进行业务传送。
本实施例通过上述步骤，网络中的任意节点(即第一节点)根据整个网络拓扑结构生成到达其他节点的路由转发表，并根据所述路由转发表中的目的节点地址与该节点对应的隧道ID建立隧道转发表，然后在处理业务的过程中，根据业务报文上的隧道ID和所述隧道转发表，进行业务传送，从而只需要获取到业务报文上其他节点的隧道ID，即可实现往该节点的路由转发，无需再对节点的各个端口地址进行手动配置或设置，解决了相关技术中IP RAN网络业务通道中需要大量的手动配置的问题，实现了设备即插即用功能，大大方便了IP RAN网络的业务通道建立，节省了手动配置带来的人工以及时间成本。
在本实施例中，在第一节点根据所述路由转发表中的目的节点地址与该节点对应的隧道ID建立隧道转发之前，所述第一节点首先获取所述其他节点的隧道ID和所述其他节点的唯一标识，进而生成各个所述其他节点的唯一标识与该节点对应的隧道ID的对应关系表，其中，所述其他节点的唯一标识设置为在所述路由转发表中查找所述其他节点对应的目的节点地址。
其中，本实施例中所述的唯一标识可用包括以下至少之一：管理环回IP地址、路由(Router)ID。
其中，第一节点可以通过以下两种方式获取到其他节点的隧道ID和所述其他节点的唯一标识：
对于相邻节点，所述第一节点可以接收相邻的所述其他节点通过IGP组播报文通告的所述其他节点的隧道ID和所述其他节点的唯一标识；和/或，对于网络中的所有节点，所述第一节点可以通过IGP协议的路由更新发布(Link State Advertisement，简称为LSA，也称链路状态发布)学习到网络上所有节点的隧道ID和所述其他节点的唯一标识。
其中，所述第一节点可以接收相邻的所述其他节点以TLV(Type、Length、Value，类型长度值)报文格式通告的所述其他节点的管理环回IP地址和所述其他节点的唯一标识(隧道ID、以及路由标识(Router ID))；和/或，所述第一节点以TLV报文格式通过IGP协议的路由更新发布LSA学习到网络上所有节点的隧道ID和所述其他节点的唯一标识(隧道ID、以及Router ID)。
本实施例中，在第一节点获取所述其他节点的隧道ID之前，各个节点自身可以通过如下两种隧道ID的获取方式获取隧道ID：
方式一，节点在打通网管数据通信网络(Data Communication Network，简称为DCN)通道后，由网络管理系统(Network Management System，简称为NMS)通过所述DCN通道向所述每个节点下发所述隧道ID；或者，
方式二，由控制器通过控制连接通道向网络上所述每个节点下发所述隧道ID。
在本实施例中，所述第一节点根据整个网络拓扑结构生成到达其他节点的路由转发表可以具体如下：所述第一节点根据所述整个网络的拓扑结构计算到达所述其他节点的最优路径，并根据所述最优路径生成到达所述其他节点的路由转发表。
本实施例中，所述隧道ID可以包括但不限于以下至少之一：多协议标签交换(Multiple Protocol Label Switch，简称为MPLS)标签，虚拟局域网(Virtual Local Area Network，简称为VLAN)等标识。
对应于上述方法，在本实施例中还提供了一种业务传送装置，位于第一节点，该装置设置为实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图2是根据本发明实施例的业务传送装置的结构框图，如图2所示，该装置包括通道建立模块22和业务传送模块24，下面对各个模块进行详细说明：
通道建立模块22，设置为根据整个网络拓扑结构生成到达其他节点的路由转发表，并根据所述路由转发表中的目的节点地址与该节点对应的隧道标识ID建立隧道转发表；业务传送模块24，与通道建立模块22相连，设置为根据业务报文上的隧道ID和所述隧道转发表，进行业务传送。
本实施例中，所述装置还可以包括：获取模块，设置为获取所述其他节点的隧道ID和所述其他节点的唯一标识；以及生成模块，与获取模块和通道建立模块22相连，设置为生成各个所述其他节点的唯一标识与该节点对应的隧道ID的对应关系表，其中，所述其他节点的唯一标识设置为在所述路由转发表中查找所述其他节点对应的目的节点地址。
本实施例中，所述获取模块可以具体设置为：接收相邻的所述其他节点通过内部网关协议IGP组播报文通告的所述其他节点的隧道ID和所述其他节点的唯一标识；和/或，通过IGP协议的路由更新发布LSA学习到网络上所有节点的隧道ID和所述其他节点的唯一标识。
其中，所述通道建立模块22可以具体设置为根据所述整个网络的拓扑结构计算到达所述其他节点的最优路径，并根据所述最优路径生成到达所述其他节点的路由转发表。
本实施例中，所述隧道ID可以包括但不限于以下至少之一：MPLS标签，VLAN等标识。
下面结合优选实施例进行说明，以下优选实施例结合了上述实施例及其优选实施方式。
在以下优选实施例中，提供了一种基于IP RAN业务通道自动配置的方法和装置，能够在IP RAN场景下实现即插即用功能，具体来说，是针对当前IP RAN网络中，接入节点很多，需要大量配置和管理方面工作，如：对节点上各个端口进行IP地址配置以及大量路由信令协议启动，带来建立业务通道的复杂性，因此这里提出了一种零配置即插即用技术，是在以太网无编号接口上实现业务通道自动配置和建立的方法，方便IP RAN无编号网络的业务通道自动配置和建立。
本优选实施例系统主要包括以下三个模块，图3是根据本发明优选实施例的系统模块关系的示意图，如图3所示，上述几个模块详细说明如下：
通告模块：该模块主要通过IGP组播方式，采用非透明方式，将本节点Router ID、管理环回IP地址以及为节点所分配隧道ID等信息，通过网管DCN通道，通告给相邻节点；
学习模块：当节点接收到其他节点发送过来的IGP组播报文后，一方面可以学习到相邻节点的Router ID、管理IP地址以及该节点所分配的隧道ID(如：MPLS标签(Label))等信息，另一方面也可以学习网上非相邻节点的Router ID，管理IP地址以及所分配的隧道ID等信息和全网路由拓扑信息，形成本节点的路由表信息；
建立模块：该模块主要根据本节点所学习到的可到达其他节点的路由表信息，根据相关路由策略和算法，为本节点到其他各个目的节点分别计算出一个最优路径，建立该节点到各个目的节点的本地路由转发表；由于该目的节点的路由转发表，与该节点到目的节点的隧道转发表是一一对应关系，这样在本节点上自动生成了以隧道ID为匹配项的业务通道；
图4是根据本发明优选实施例的增加节点标签转发通道自动建立的示意图，本优选实施例的IP RAN无编号接口网络中，其零配置业务通道自动建立的实现方法，其主要过程，如图4所示；其方案主要包括以下特征或过程：
首先，每个节点配置或自动生成本节点上Router ID、管理环回(Loopback)地址等信息，保存在本节点上；而对于每个节点作为目的节点时，所分配唯一的隧道ID信息，如：MPLS标签，VLAN等标识，可以由两种方式来分配：一个每个节点在打通DCN通道后，由网管系统(NMS)通过DCN通道，向每个节点下发隧道ID；另一个由控制器通过控制连接通道，如：传输控制协议(Transmission Control Procotol，简称为TCP)或传输层安全协议(Transport Layer Security，简称为TLS)等连接通道，向网络上每个节点下发唯一隧道ID；
其次，每个节点启动IGP协议进程，将通过扩展IGP(如：中间系统间的路由协议(Intermediate System-Intermediate System，简称为ISIS)，开发式最短路径优先(Open Shortest Path First，简称为OSPF)等)，将本节点网元参数信息，如：Router ID，管理环回IP地址以及所本节点所分配的隧道ID(如：MPSL Label)等信息，以TLV方式，图5是根据本发明优选实施例的网元信息TLV封装格式示意图，图6是根据本发明优选实施例的IGP P2P洪泛组播报文格式的示意图，如图5和6所示，封装到IGP协议报文，再以IGP组播方式(如：224.0.0.5)，通过DCN通道发送给所有其所有相邻节点，其组播帧格式如图5所示；
然后，当网络上节点接收到其相邻节点发送过来的IGP协议组播报文后，一方面根据报文中携带的Router ID,管理环回IP地址以及隧道ID等TLV信息，可以学习相邻节点的Router ID,管理环回IP地址以及隧道ID等信息；另一方面根据IGP协议路由更新发布(LSA)，可以学习网上其他节点的路由信息(如：跳数，花费(COST)以及可达信息等)以及网上所有节点的Router ID、管理IP地址和特定分配的隧道ID等信息；
最后，每个节点根据学习到到其他节点路由信息表，可以计算出从本节点到其他各个节点的一条最优的转发路径。由于每个节点所分配隧道ID是唯一的，其对应隧道转发路径与到该节点的路由转发路径是一致的，在该节点上自动生成了到网络上各个其他节点的隧道转发表，自动建立隧道转发通道；不需要通过LDP、资源预留协议(Resource Reservation Protocol，简称为RSVP)等信令协议来建立标签转发隧道。
采用本优选实施例所述的方法和装置，与现有技术相比，无需对网络上设备进行配置，在以太网无编号接口上，实现业务通道自动开通和建立，实现设备即插即用功能；
实施例一
本实施例以节点插入情形为例进行详细描述，以图4所示的网络结构为例，具体简述下当新设备接入到网络时，如何通过扩展OSPF协议，实现标签转发通道创建和开通，实现设备即插即用功能：
S2，在以太网无编号接口网络中，当一个A1接入节点刚加入如图4所示IP RAN网络时，A1节点将根据原有设备默认配置好的Router ID,桥接MAC以及系统列号等信息，自动形成一个管理环回IP地址，默认启动本节点OSPF协议进程，设定DCN VRF(4094)和点对点(Point to Point，简称为P2P)端口类型；对于本节点所分配的唯一隧道信息，可以通过网管DCN通道自动分配或者控制器来下发；
S4，A1节点启动OSPF协议，自动创建DCN VRF和设定端口P2P类型，一方面A1将本节点的Router ID，管理IP地址和标签等信息TLV方式封装到OSPF组播(224.0.0.5)报文中，以DCN VRF(4094)通道发送给A1相邻节点A2和A4节点；
S6，当A2和A4节点接收到A1节点DCN通道发送过来的OSPF组播报文后，可以学习到A1节点Router ID，管理IP和标签等信息，保存到A1节点的路由信息，并把新学习到A1节点信息，再通过OSPF组播方式通告给A2和A4相邻其他节点A3 和A5；同时，A2和A4节点将自己原来学习到的路由信息和本节点Router ID，管理IP以及标签等信息，也通告给A1节点；
S8，当A1节点接收到相邻节点A2和A4发送过来的IGP组播报文后，一方面学习到A2和A4节点的Router ID,管理IP地址以及其标签，另外也可以学习到相邻节点A2，A4两节点所学习到其他节点A3，A5，A6以及B的Router ID，管理IP以及这些节点所对应的标签；另一方面也可以学习到所有其他节点A2，A3，A4，A5，A6以及B的路由信息，生成本节点A1路由信息表；
S10，A1节点有了路由信息表后，在根据相关路由策略，为网络上其他每个节点计算出一个最优路径，生成路由转发表，如：对于目的节点为B，可选择跳数少一点的INT1端口上转发；而对于目的节点为A6，则可选择跳数少一些的INT2端口上转发，如图4所示；
S12，由于每个节点上在全网上标签是唯一，其该节点标签和Router ID或管理IP地址都是一一对应关系，所以在A1上根据每个节点管理IP地址寻址的路由转发表，与根据每个节点标签寻址的标签转发表是一致的，可以直接将路由转发表映射出标签转发表，自动建立业务转发的业务通道。
实施例二
本实施例以节点删除情形为例进行详细描述，图7是根据本发明优选实施例的删除节点标签转发通道自动建立示意图，以图7所示结构示意图为例，描述了在IP RAN网上A1出现了故障或掉电情况下，其他节点如何重新建立标签转发通道的；
S2，当A1节点出现故障或掉电情况下，其A1两边相邻节点A2，A4将会检测到A1的连接丢失，从相邻节点信息库删除掉A1节点的Router ID，管理IP地址以及所分配的标签等信息，并更改路由表信息，如图7中A2节点上路由表信息，将到达目的节点B的下一跳信息，由A1改成A4，并将更改后的路由信息通过OSPF组播方式(224.0.0.5)发送其新的相邻节点A3和A4节点；
S4，当A3和A4接收到A2节点发送过来的路由信息更新后，更新各自节点上路由信息表，并在其节点信息库中删除A1节点信息，并同样方式，通过DCN通道，将路由更新信息发送其相邻节点，直至该网络上所有节点上进行A1删除操作和路由信息表更新；
S6，当网上节点都形成了新的路由信息表后，重新计算新的路由转发表和标签转发表；如图7中A2节点来说，因A1节点故障后，其接口INT1出现故障，其到目的节点A6的出接口就变成接口INT3；
S8，而对于A2上标签转发表来说，也与路由转发表一致，做出相应的修改，将到A6的LSP A6出接口改成INT3，这样就自动建立一个新的标签转发通道。
实施例三
本实施例以标签分配情形为例进行详细描述，图8是根据本发明优选实施例的节点转发标签分配过程的示意图，以图8所示为例，简述了IP RAN网络节点如何分配全网唯一MPLS标签过程；
S2，对于图8中A1，A2，A3和汇聚节点B来说，在打通各自节点的DCN管理通道后，由NMS网管系统，通过DCN通道，将各节点所分配的MPLS标签或VLAN等唯一标识信息，封装到IP报文中，再通过标准以太网帧方式，发送给各节点进行分配；
S4，假如采用控制器集中分配方式，如图8所示，控制器可以通过TLS或TCP等通道，对A1，A2，A3以及B节点分别配置唯一转发标签或标识。
图9是根据本发明优选实施例的IP RAN零配置即插即用流程示意图，整体流程如图9所示，上述优选实施例中，能够自主产生管理IP地址，自行创建DCN通道；通过扩展IGP路由协议，实现了Router id，管理IP地址的通告和学习；在接入节点和汇聚节点之间自动建立标签转发通道，不需要LSP静态或LDP，基于流量工程扩展的资源预留协议(Resource Reservation Protocol-Traffic Engineering，简称为RSVP-TE)等静态配置。
在另外一个实施例中，还提供了一种软件，该软件设置为执行上述实施例及优选实施例中描述的技术方案。
在另外一个实施例中，还提供了一种存储介质，该存储介质中存储有上述软件，该存储介质包括但不限于光盘、软盘、硬盘、可擦写存储器等。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处 的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
如上所述，本发明实施例提供的一种业务传送方法及装置，具有以下有益效果：解决了相关技术中IP RAN网络业务通道中需要大量的手动配置的问题，实现了设备即插即用功能，大大方便了IP RAN网络的业务通道建立，节省了手动配置带来的人工以及时间成本。

Claims (14)

  1. 一种业务传送方法，包括：
    第一节点根据整个网络拓扑结构生成到达其他节点的路由转发表，并根据所述路由转发表中的目的节点地址与该节点对应的隧道标识ID建立隧道转发表；
    所述第一节点根据业务报文上的隧道ID和所述隧道转发表，进行业务传送。
  2. 根据权利要求1所述的方法，其中，在第一节点根据所述路由转发表中的目的节点地址与该节点对应的隧道ID建立隧道转发表之前，还包括：
    所述第一节点获取所述其他节点的隧道ID和所述其他节点的唯一标识；
    所述第一节点生成各个所述其他节点的唯一标识与该节点对应的隧道ID的对应关系表，其中，所述其他节点的唯一标识设置为在所述路由转发表中查找所述其他节点对应的目的节点地址。
  3. 根据权利要求2所述的方法，其中，所述第一节点获取所述其他节点的隧道ID包括：
    所述第一节点接收相邻的所述其他节点通过内部网关协议IGP组播报文通告的所述其他节点的隧道ID和所述其他节点的唯一标识；和/或，
    所述第一节点通过IGP协议的路由更新发布LSA学习到网络上所有节点的隧道ID和所述其他节点的唯一标识。
  4. 根据权利要求3所述的方法，其中，所述第一节点获取所述其他节点的隧道ID包括：
    所述第一节点接收相邻的所述其他节点以TLV报文格式通告的所述其他节点的隧道ID和所述其他节点的唯一标识；和/或，
    所述第一节点以TLV报文格式通过IGP协议的路由更新发布LSA学习到网络上所有节点的隧道ID和所述其他节点的唯一标识。
  5. 根据权利要求2至4中任一项所述的方法，其中，所述唯一标识包括以下至少之一：管理环回IP地址、路由Router ID。
  6. 根据权利要求2所述的方法，其中，在所述第一节点获取所述其他节点的隧道ID之前，还包括：
    每个节点在打通网管数据通信网络DCN通道后，由网络管理系统NMS通过所述DCN通道向所述每个节点下发所述隧道ID；或者，
    由控制器通过控制连接通道向网络上所述每个节点下发所述隧道ID。
  7. 根据权利要求1所述的方法，其中，第一节点根据整个网络拓扑结构生成到达其他节点的路由转发表包括：
    所述第一节点根据所述整个网络的拓扑结构计算到达所述其他节点的最优路径，并根据所述最优路径生成到达所述其他节点的路由转发表。
  8. 根据权利要求1至7中任一项所述的方法，其中，所述隧道ID包括以下至少之一：多协议标签交换MPLS标签，虚拟局域网VLAN。
  9. 一种业务传送装置，位于第一节点，包括：
    通道建立模块，设置为根据整个网络拓扑结构生成到达其他节点的路由转发表，并根据所述路由转发表中的目的节点地址与该节点对应的隧道标识ID建立隧道转发表；
    业务传送模块，设置为根据业务报文上的隧道ID和所述隧道转发表，进行业务传送。
  10. 根据权利要求9所述的装置，其中，所述装置还包括：
    获取模块，设置为获取所述其他节点的隧道ID和所述其他节点的唯一标识；以及
    生成模块，设置为生成各个所述其他节点的唯一标识与该节点对应的隧道ID的对应关系表，其中，所述其他节点的唯一标识设置为在所述路由转发表中查找所述其他节点对应的目的节点地址。
  11. 根据权利要求10所述的装置，其中，所述获取模块设置为：
    接收相邻的所述其他节点通过内部网关协议IGP组播报文通告的所述其他节点的隧道ID和所述其他节点的唯一标识；和/或，通过IGP协议的路由更新发布LSA学习到网络上所有节点的隧道ID和所述其他节点的唯一标识。
  12. 根据权利要求10或11所述的方法，其中，所述唯一标识包括以下至少之一：管理环回IP地址、路由Router ID。
  13. 根据权利要求9所述的装置，其中，所述通道建立模块设置为：
    根据所述整个网络的拓扑结构计算到达所述其他节点的最优路径，并根据所述最优路径生成到达所述其他节点的路由转发表。
  14. 根据权利要求9至13中任一项所述的装置，其中，所述隧道ID包括以下至少之一：多协议标签交换MPLS标签，虚拟局域网VLAN。
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