WO2011017964A1

WO2011017964A1 - Forwarding equipment and method thereof

Info

Publication number: WO2011017964A1
Application number: PCT/CN2010/073458
Authority: WO
Inventors: 胡方伟; 宋晓丽; 杨波
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-08-11
Filing date: 2010-06-02
Publication date: 2011-02-17
Also published as: CN101997758A

Abstract

A forwarding equipment and method are disclosed in the present invention. The forwarding equipment includes: a packet analysis module, used for analyzing data after receiving it, classifying the analyzed data into protocol packet data and user data, and providing the protocol packet data and the user data obtained by classification; a protocol packet processing module, used for forwarding the protocol packet data provided by the packet analysis module; a forwarding information base, used for storing user data forwarding information; a user data packet processing module, used for processing and forwarding, according to the user data forwarding information stored in the forwarding information base, the user data provided by the packet analysis module. The present invention improves the model of FE (Forwarding Element).

Description

TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a forwarding device and method. BACKGROUND With the rapid development of the Internet, the current IP network has been widely commercialized on a large scale, and the scale and number of users of the commercial network are continuously and rapidly developed, and accordingly, more and more new services and new functions are coming. Being introduced into the network, the control plane becomes more and more complex. The scalability of the Network Control Plane, Data Plane, and Management Plane has become a major challenge in the evolution of IP networks. However, the flaws in IP network architecture design have greatly limited network capacity, network scalability, controllability, security, and QOS. In the current IP network, the control plane and the data plane are integrated into the same network node. Therefore, when more and more service and control signaling are added to the network node, the entire network is extremely complicated and difficult to maintain and difficult to expand. In order to cope with the above network problems, an independent scalable control plane (ISCP) technology is proposed. This technology is based on the idea of controlling forwarding separation, separating the control planes from the data plane and maintaining them. This reduces the pressure on network expansion and control capabilities and increases the robustness of the network. 1 is a schematic diagram of an ISCP network structure according to the related art. As shown in FIG. 1, an ISCP structure separates a control plane, a data plane, and a management plane. The control plane is composed of a plurality of control elements (Control Element, referred to as CE) and services. Control Service Element (SCE) is used to control and manage the operation of all network protocols, including route calculation, routing, and service processing. The data plane is composed of a plurality of forwarding elements (FEs) and a service processing element (SPE), which are mainly used for classifying and forwarding service data. The management plane is composed of a Management Element (ME) device, which is used to manage network entities such as CEs and FEs. The ME monitors and collects static information and status information of each NE, and based on the information. The configuration command manages each NE. For the model of FE in the related art, there is no corresponding technical solution to describe its structure. SUMMARY OF THE INVENTION The present invention has been made in view of the problem of describing the structure of a FE model without a corresponding technical solution in the related art. To this end, it is a primary object of the present invention to provide a forwarding apparatus and method to solve the above problems. In order to achieve the above object, according to an aspect of the present invention, a forwarding device is provided. The forwarding device according to the present invention includes: a message parsing module, configured to receive and parse data, classify the parsed data according to protocol packet data and user data, and output the classified protocol packet data to the protocol packet processing module. The classified user data is output to the user data packet processing module; the protocol packet processing module is configured to forward the protocol packet data provided by the packet parsing module; and the forwarding information database table is configured to store the user data forwarding information; The user data packet processing module is configured to process and forward the user data provided by the packet parsing module according to the user data forwarding information stored in the forwarding information base table. Preferably, the parsing module is further configured to perform integrity checking, input queue management, and congestion control on the data before parsing the data. Preferably, the user data packet processing module is further configured to query the forwarding information base to determine an output interface corresponding to the user data. If the user data is unicast data, the user data corresponds to an output interface, and if the user data is multicast data, The user data corresponds to multiple output interfaces. Preferably, the user data processing module is further configured to perform segmentation, shaping, and output queue management on the user data. Preferably, the protocol file processing module is further configured to classify the protocol text data, and redirect the protocol message to the corresponding control network element according to the classification result. Preferably, the foregoing apparatus further includes: a receiving module, configured to receive routing information base information from the control network element; and an updating module, configured to update user data forwarding information in the forwarding information base table according to the routing information base information received by the receiving module. . Preferably, the user data forwarding information stored in the forwarding information base table includes at least one of the following: a destination address, a subnet mask, a next hop, and an outbound interface. In order to achieve the above object, in another aspect of the present invention, a forwarding method is provided. The forwarding method according to the present invention includes: receiving and parsing data, classifying the parsed data according to protocol packet data and user data; forwarding the classified protocol packet data; and classifying according to the stored user data forwarding information User data is processed and forwarded. Preferably, the forwarding of the protocol packet data obtained by the classification includes: classifying the protocol packet data obtained by the classification, and redirecting the protocol packet to the corresponding control network element according to the classification result. Preferably, the method further includes: receiving routing information base information from the control network element, and updating the stored user data forwarding information according to the routing information base information. Preferably, the user data forwarding information includes at least one of the following: a destination address, a subnet mask, a next megabyte, and an outbound interface. The present invention provides a forwarding device including a message parsing module, a protocol packet processing module, a user data packet processing module, and a forwarding information database table, and solves the problem that the corresponding technical solution does not have a corresponding technical solution for the structure of the FE model. The problem described, and thus the FE model. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of an iSCP network structure according to the related art; FIG. 2 is a schematic diagram of a forwarding device (ie, an iSCP network FE model) according to an embodiment of the present invention; FIG. 3 is a forwarding of an embodiment of the present invention. A flowchart of the method; FIG. 4 is a detailed flowchart of an iSCP network data forwarding method according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. Embodiment 1 According to Embodiment 1 of the present invention, a forwarding device is provided. As shown in FIG. 2, the device (ie, the ISCP network data forwarding network element device) includes: 4 解析 analysing module 2, protocol 4 处理处理 processing module 4, user data 4 艮处理 processing module 6 and forwarding information library (Forwarding) Information Base (referred to as FIB) Table 8. The message parsing module 2 is configured to receive data and parse the data, classify the parsed data according to protocol packet data and user data, and provide protocol packet data and user data obtained after classification, that is, protocol report The data is forwarded to the protocol packet processing module 4 to process the protocol packet, and the user data is forwarded to the user data packet processing module 6 for processing. The protocol processing module 4 is connected to the text parsing module 2, and is configured to forward the protocol packet data provided by the text parsing module 2, that is, classify the protocol packets, and redirect different protocol packets to different CEs. Provides related network information for the CE device to calculate routes. The user data packet processing module 6 is connected to the message parsing module 2 for processing and forwarding the user data provided by the packet parsing module 2. The FIB table 8 is configured to store user data forwarding information, where the user data forwarding information includes related destination address, subnet mask, next hop, and outbound interface. In order for the user data processing module 6 to query related information in the FIB when forwarding user data to guide the forwarding process of the user data. Preferably, the fourth parsing module 2 is further configured to perform integrity check, input queue management, congestion control, and the like on the received data before parsing the data. Preferably, the user data processing module 6 is further configured to query the forwarding information base to determine an output interface corresponding to the user data. If the user data is unicast data, the user data corresponds to an output interface. If the user data is multicast data, the user data corresponds to multiple output interfaces. Preferably, the user data processing module 6 can also be used for fragmentation, shaping and output queue management of user data to be forwarded. In addition, the device further includes: a receiving module, configured to receive routing information base (RIB) information from the CE; and an update module, configured to update the device according to the routing information database information received by the receiving module User data forwarding information in FIB Table 8. With this embodiment, a forwarding device including a message parsing module, a protocol packet processing module, a user data packet processing module, and a forwarding information database table is provided, which solves the structure of the model in the related art without the corresponding technical solution for the FE. The problem of description is described, and the model of FE is further improved. Embodiment 2 According to the second embodiment of the present invention, a forwarding method, that is, an ISCP network data forwarding method, is provided, and the method can be used to implement the foregoing forwarding device. FIG. 3 is a flowchart of a forwarding method according to an embodiment of the present invention. As shown in FIG. 3, the method includes the following steps S302 to S306: Step S302, receiving and parsing data, and parsing the obtained data according to the protocol Data and user data are classified. Step S304, forwarding the classified protocol data. Specifically, the protocol packet data obtained by the classification is classified, and the protocol packet is redirected to the corresponding control network element according to the classification result. Step S306, processing and forwarding the classified user data according to the stored user data forwarding information. In addition, the method further includes: receiving routing information base information from the control network element, and updating the stored user data forwarding information according to the routing information base information. The implementation process of the embodiment of the present invention will be described in detail below with reference to examples. FIG. 4 is a flowchart of the data forwarding of the ISCP network in the embodiment of the present invention. As shown in FIG. 3, the method includes the following steps S402 to S414: Step S402: The FE device receives the packet sent by other devices. Step S404: The packet parsing module of the FE device parses the packet, and analyzes whether the packet belongs to the protocol packet or the data packet according to the port number and the protocol number in the packet. Step S406: Determine whether the message is a protocol message. If the determination result is yes, proceed to step 4 to gather S410. If the determination result is no, proceed to step 4 to gather S408. Step S408: The data packet is a user data packet, and the user data processing module forwarded to the FE device forwards the data, and the user data is forwarded according to the FIB table in the FE device. Step S410: At this time, it is determined that the packet is a protocol packet, and is forwarded to the protocol packet processing mode of the FE. The block processes the protocol text. Step S412: After the protocol 4 processing module receives the protocol 4, the protocol of the protocol 4 is classified and redirected to the corresponding CE device. Different protocols can be directed to different CE devices. This can reduce the load on the CE device and improve the robustness of the network. Step 4 gathers S414: The processing of the 4 艮 text is completed. In summary, the foregoing embodiment provides a forwarding device including a packet parsing module, a protocol packet processing module, a user data packet processing module, and a forwarding information database table, which solves the corresponding problem in the related art. The technical solution describes the structure of the model of the FE, and provides a forwarding method. When the model of the FE is perfected, the data is forwarded. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed 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, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claims A forwarding device, characterized in that it comprises:

a packet parsing module, configured to receive and parse data, and classify the parsed data according to protocol packet data and user data, and the classified protocol packet data is output to a protocol packet processing module, and the classified The user data is output to a user data packet processing module;

a protocol processing module, configured to forward the data of the protocol provided by the parsing module;

a forwarding information base for storing user data forwarding information;

The user data packet processing module is configured to process and forward the user data provided by the packet parsing module according to the user data forwarding information stored in the forwarding information repository. The device according to claim 1, wherein the message parsing module is further configured to perform integrity check, input queue management, and congestion control on the data before parsing the data. The apparatus according to claim 1, wherein the user data packet processing module is further configured to query a forwarding information base to determine an output interface corresponding to the user data, and if the user data is unicast data, The user data corresponds to an output interface. If the user data is multicast data, the user data corresponds to multiple output interfaces. The apparatus according to claim 1, wherein the user data packet processing module is further configured to perform fragmentation, shaping, and output queue management on the user data. The device according to claim 1, wherein the protocol packet processing module is further configured to classify the protocol packet data, and redirect the protocol packet to a corresponding control network according to the classification result. yuan.

The device according to any one of claims 1 to 5, further comprising: a receiving module, configured to receive routing information base information from the control network element; and an updating module, configured to be configured according to the receiving module The received routing information database information updates the user data forwarding information in the forwarding information base.

The device according to any one of claims 1 to 5, wherein the user data forwarding information stored in the forwarding information library includes at least one of the following: a destination address, a subnet mask, and a next Mega, outgoing interface.

8. A forwarding method, characterized in that it comprises:

Receiving and parsing data, and classifying the parsed data according to protocol message data and user data;

Forwarding the protocol packet data obtained by the classification;

The user data obtained by the classification is processed and forwarded according to the stored user data forwarding information.

9. The method of claim 8, wherein forwarding the classified data of the protocol comprises:

And classifying the protocol packet data obtained by the classification, and redirecting the protocol packet to the corresponding control network element according to the classification result.

10. The method according to claim 8 or 9, further comprising:

Receiving routing information base information from the control network element, and updating the stored user data forwarding information according to the routing information base information.

The method according to claim 8 or 9, wherein the user data forwarding information comprises at least one of the following: a destination address, a subnet mask, a next hop, and an outbound interface.