WO2015035813A1 - 上报交换机类型的方法及装置 - Google Patents

上报交换机类型的方法及装置 Download PDF

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WO2015035813A1
WO2015035813A1 PCT/CN2014/080433 CN2014080433W WO2015035813A1 WO 2015035813 A1 WO2015035813 A1 WO 2015035813A1 CN 2014080433 W CN2014080433 W CN 2014080433W WO 2015035813 A1 WO2015035813 A1 WO 2015035813A1
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switch
type
controller
reporting
reported
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PCT/CN2014/080433
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English (en)
French (fr)
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梁乾灯
尤建洁
崔英
郑立君
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中兴通讯股份有限公司
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Publication of WO2015035813A1 publication Critical patent/WO2015035813A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00Packet switching elements
    • H04L49/70Virtual switches
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/085Retrieval of network configuration; Tracking network configuration history
    • H04L41/0853Retrieval of network configuration; Tracking network configuration history by actively collecting configuration information or by backing up configuration information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08Configuration management of networks or network elements
    • H04L41/0895Configuration of virtualised networks or elements, e.g. virtualised network function or OpenFlow elements

Definitions

  • the present invention relates to the field of communications, and in particular to a method and apparatus for reporting a switch type.
  • BACKGROUND OF THE INVENTION As today's networks expose more and more ills and the need for network performance is increasing, researchers have to incorporate many complex functions into the router's architecture, such as open shortest path first ( Open Shortest Path First (OSPF), Border Gateway Protocol (BGP), Multicast, Differentiated Services, Traffic Engineering, Network Address Translation (NAT), Firewall, Multi-Protocol Label Switching ( Multi protocol Label Switching (referred to as MPLS) and so on.
  • OSPF Open Shortest Path First
  • Border Gateway Protocol BGP
  • Multicast Differentiated Services
  • Traffic Engineering Network Address Translation
  • Firewall Firewall
  • MPLS Multi-Protocol Label Switching
  • MPLS Multi protocol Label Switching
  • the OpenFlow protocol is a standard used to describe the information used for interaction between controllers and switches, as well as interface standards for controllers and switches.
  • the core part of the protocol is a collection of information structures for the OpenFlow protocol.
  • the OpenFlow flow table ( Figure 2) or the programmed multiple flow tables are cascaded to configure the switch forwarding path ( Figure 3).
  • the flow table entries consist of the following fields: matching fields, counters, and instruction sets:
  • the Match Fields are the input keywords of the message matching, which are used to match a flow table entry; the Counters are various statistical information for management;
  • the Instruction Set refers to the message. Operation instructions include discarding, forwarding packets to the specified port, setting the packet header field value, and adding package labels.
  • the Action Set is associated with each message. It is passed between multiple flow tables in the pipeline and modified by the instructions of each flow table until the end of the pipeline processing, forming the final action set. As shown in FIG. 3, step (1): find the highest priority matching stream entry; step (2): application instruction: modify the message or update the matching domain; update the action set; update the metadata; step (3): Send matching data and action sets to the next flow table.
  • OF switches are defined in the standard in two types: pure OF switches and mixed mode OF switches.
  • OFLS OpenFlow Logical Switch
  • the only difference between the two types is that the latter needs to support the reserved interface of NORMAL, so that the OpenFlow flow table pipe can pull traffic to the traditional switch or router. Processing process.
  • the current OF protocol does not define how the OF controller senses which type of OFLS, so the OF controller may default to the OFLS as a mixed mode switch type, and then deliver some output to the reserved interface according to the APP service requirements. "Event table entry for NORMAL".
  • the OF switch that does not support NORMAL can receive an error message when it receives the flow table entry with the output interface of the NORMAL interface, it carries the OFPBA_BAD_OUT_PORT value of the ofp_bad_action_code, but this requires the controller to respond to the error message and output.
  • the interface is comprehensively judged by NORMAL, and the APP needs to be further required to cancel the service request. The process is more complicated, and the way of sensing the type of the OF switch is semantically ambiguous and difficult to understand.
  • FIG. 3a is an application architecture diagram of an OF configuration protocol and an OF protocol according to the related art. After the OF configuration point configures or acquires the type of the OF switch, the related technology does not support the OF configuration point to notify the corresponding OF controller of the type of the OF switch. . In view of the problem that the OF controller cannot sense which type of OF switch the OF switch is in the related art, an effective solution has not been proposed yet. SUMMARY OF THE INVENTION Embodiments of the present invention provide a method and apparatus for reporting a switch type to solve at least the above problems.
  • a method for reporting a switch type including: an Open Flow OF switch reporting a type of the OF switch to an OF controller; and an OF configuration point configuring and/or acquiring the OF After the type of the switch, the type of the OF switch is reported to the OF controller, where the OF switch is an OF logical switch.
  • the type includes at least one of the following: a pure OF switch type, a hybrid mode OF switch type.
  • the hybrid OF switch type indicates that the OF switch supports both OF protocol-based message forwarding and traditional mode-based message forwarding; and/or the native mode OF switch type indicates that the OF switch only Support packet forwarding based on the OF protocol.
  • the type is identified by at least one of the following: a type parameter of the OF switch, a normal NORMAL interface attribute, and a type identifier of the OF switch.
  • the OF switch reports the type of the OF switch to the OF controller, including at least one of the following: the OF switch actively reports the type of the OF switch to the OF controller; The switch reports the type of the OF switch to the OF controller in response to the type request of the OF controller.
  • the OF switch responds to the type request of the OF controller, and reporting the type of the OF switch to the OF controller includes: the OF switch responding to the type request of the OF controller, to the The OF controller sends a type response message, where the type response message includes the type.
  • the type of the OF switch is set according to different configurations.
  • the OF configuration point configuration and/or the type of acquiring the OF switch includes: the OF configuration point performs type configuration of the OF logical switch on an OF physical switch; and/or the OF configuration point is from The type of the OF logical switch is obtained on the OF physical switch.
  • the OF configuration point is the OF controller corresponding to the OF logical switch configuration.
  • the OF switch receives and executes a message forwarding policy formulated by the OF controller according to the type.
  • a method for reporting a switch type including: the OpenFlow OF controller receiving at least one of: receiving a type of the OF switch reported by an OF switch; receiving an OF configuration point at The type of the OF switch reported after the type of the OF switch is configured and/or obtained, wherein the OF switch is an OF logical switch.
  • the OF controller formulates a packet forwarding policy according to the type, and sends the packet forwarding policy to the OF switch.
  • the OF controller receives the type reported by the OF configuration point, the
  • the OF controller is an OF controller that manages the logical OF switch.
  • the type of the OF switch reported by the receiving OF switch includes at least one of: receiving a type of the OF switch actively reported by the OF switch; receiving a type of the OF switch responding to the OF controller The type of the OF switch that is requested to be reported.
  • a device for reporting a switch type is provided on an OF switch or an OF configuration point, and includes a reporting module, where the reporting module is set to at least one of the following: The type of the switch is reported to the OF controller. After the type of the OF switch is configured and/or obtained, the type of the OF switch is reported to the OF controller, where the OF switch is an OF logical switch.
  • the apparatus further includes an execution module configured to receive and execute a message forwarding policy formulated by the OF controller according to the type.
  • a device for reporting a switch type is provided on an OF controller, including a receiving device, where the receiving device includes at least one of the following: receiving the OF switch reported by an OF switch The type of the OF switch that is received after the OF configuration point is configured and/or the type of the OF switch is obtained.
  • the device further includes a formulating module, configured to formulate a packet forwarding policy according to the type, and send the packet forwarding policy to the OF switch
  • a formulating module configured to formulate a packet forwarding policy according to the type, and send the packet forwarding policy to the OF switch
  • FIG. 1 is an OpenFlow protocol application architecture diagram according to the related art
  • FIG. 2 is a packet flow provided by the related art through an OpenFlow processing pipeline
  • FIG. 3 is a flow table based on each flow table according to the related art.
  • FIG. 3a is an application architecture diagram of an OF configuration protocol and an OF protocol according to the related art
  • Figure 4 is a flowchart of a method 1 for reporting a switch type according to a preferred embodiment of the present invention
  • Figure 5 is a preferred embodiment in accordance with the present invention.
  • FIG. 6 is a flowchart of a method 3 for reporting a switch type according to a preferred embodiment of the present invention
  • FIG. 7 is a flowchart of a method 4 for reporting a switch type according to a preferred embodiment of the present invention
  • 8 is a flow chart of a method 5 of reporting a switch type in accordance with a preferred embodiment of the present invention
  • FIG. 6 is a flowchart of a method 3 for reporting a switch type according to a preferred embodiment of the present invention
  • FIG. 7 is a flowchart of a method 4 for reporting a switch type according to a preferred embodiment of the present invention
  • 8 is a flow chart of a method 5 of reporting a switch type in accordance with
  • FIG. 9 is a flow chart of a method 6 of reporting a switch type in accordance with a preferred embodiment of the present invention
  • FIG. 10 is a preferred implementation in accordance with the present invention.
  • the type of the OF switch is reported to the OF controller, where the OF switch is an OF logical switch.
  • the above method solves the problem that the OF controller cannot sense which type of OF switch the OF switch is in the related art, and has the beneficial effect that the OF controller can simply acquire the type of the OF switch.
  • the types may include at least one of the following: a pure OF switch type, a hybrid mode OF switch type.
  • the type of the hybrid OF switch indicates that the OF switch supports both the OF protocol-based packet forwarding and the traditional mode-based packet forwarding; and/or the native mode OF switch type indicates that the OF switch only supports Message forwarding based on the OF protocol.
  • the type may be identified by at least one of the following: a type parameter of the OF switch, a normal NORMAL interface attribute, and a type identifier of the OF switch.
  • the OF controller can recognize the type of the OF switch very simply and quickly.
  • the OF switch can actively report the type of the OF switch to the OF controller.
  • the OF switch can also respond to the type request of the OF controller. And reporting the type of the OF switch to the OF controller.
  • the OF switch may further send a type response message to the OF controller in response to the type request of the OF controller, where the type response message includes the type.
  • the OF switch is an OF logical switch
  • the OF physical switch in which the OF logical switch is located supports the forwarding of the packet in the traditional mode
  • the type of the OF switch is set according to different configurations.
  • the configuring the OF configuration point and/or acquiring the type of the OF switch may include: the OF configuration point performing type configuration of the OF logical switch on an OF physical switch; and/or the OF configuration point from The type of the OF logical switch is obtained on the OF physical switch.
  • the OF configuration point is the OF controller corresponding to the OF logical switch configuration.
  • the type of the OF logical switch can also be configured by the physical switch local OAM or OF configuration point or the network management system as a pure OF switch or a hybrid mode OF switch.
  • the OF configuration point may obtain the type of the OF switch locally from the physical switch, or may obtain the OF exchange from the OF configuration point itself if the type of the OF switch is the OF configuration point configuration.
  • the type of the machine can also obtain the type of the OF switch from the network management system.
  • the OF configuration point reports the type of the OF switch to the OF controller.
  • the OF switch receives and executes a message forwarding policy formulated by the OF controller according to the type.
  • the embodiment of the present invention further provides a method for reporting a switch type, the method comprising: the OpenFlow OF controller receiving at least one of the following: receiving the type of the OF switch reported by the OF switch, receiving the OF configuration point in the configuration and/or Or the type of the OF switch that is reported after the type of the OF switch is obtained, where the OF switch is an OF logical switch.
  • the OF controller formulates a packet forwarding policy according to the type, and sends the packet forwarding policy to the OF switch.
  • the OF controller is an OF controller that controls the logical OF switch.
  • the type of the OF switch reported by the receiving OF switch includes at least one of: receiving a type of the OF switch actively reported by the OF switch; receiving a type of the OF switch responding to the OF controller The type of the OF switch that is requested to be reported.
  • the embodiment of the present invention further provides a device for reporting a switch type, which is set on an OF switch or an OF configuration point, and the device includes a reporting module, and the reporting module is configured to be at least one of the following: After the type of the OF switch is configured and/or obtained, the type of the OF switch is reported to the OF controller, where the OF switch is an OF logical switch.
  • the apparatus further includes an execution module configured to receive and execute a message forwarding policy formulated by the OF controller according to the type.
  • the embodiment of the present invention further provides a device for reporting a switch type, which is disposed on an OF controller, where the device includes a receiving device, and the receiving device includes at least one of the following: receiving the type of the OF switch actively reported by the OF switch. And receiving the type of the OF switch reported by the OF configuration point after configuring and/or acquiring the type of the OF switch.
  • the device further includes a setting module, configured to formulate a message forwarding policy according to the type, and send the message forwarding policy to the OF switch.
  • Preferred embodiment 1 The embodiment of the present invention queries the type of the OFLS by using the OFLS description message.
  • FIG. 4 is a flowchart of a method 1 for reporting a switch type according to a preferred embodiment of the present invention. As shown in FIG.
  • Step S402 OF control
  • the device sends a multipart Description Request message (OF) to the OFLS, and the message is used to query the description information of the OFLS, the software and hardware version, the serial number, and the like.
  • step S404 the OFLS returns a multi-part description response to the OF controller.
  • the message (Multipart Description Reply) in which the message carries the OFLS type parameter, such as a pure OF switch or a hybrid mode switch, in addition to the manufacturer, hardware and software version, and serial number of the OFLS.
  • the embodiment of the present invention needs to extend the message protocol of the multi-part description reply message.
  • the second embodiment of the present invention is used to query the type of the OFLS by using the interface description message.
  • the embodiment of the present invention is a type of feature message query OFLS.
  • FIG. 6 is a flowchart of a method 3 for reporting a switch type according to a preferred embodiment of the present invention.
  • the process includes the following steps: S602.
  • the OF controller sends a feature request message (OFPT_FEATURES_Request) to the OFLS, where the message is used to query the basic capability of the OFLS.
  • the OFLS returns a feature request reply message (OFPT_FEATURES_Reply) to the OF controller, where the message carries the OFLS type tag in addition to the basic capabilities of the OFLS, such as flow statistics and table statistics; the OFLS type identifier is used to Indicates whether the OFLS is a pure OF switch or a mixed mode OF switch.
  • This embodiment extends a flag bit in the capabilities field of the feature request message to indicate whether the mixed mode is supported.
  • the fourth embodiment of the present invention is a configuration point for configuring an OFLS instance on the OFCS.
  • FIG. 7 is a flowchart of a method for reporting a switch type according to a preferred embodiment of the present invention. As shown in FIG. 7, the process includes The following steps are performed: Step S702: The OF configuration point sends an Edit-Config message to the OFCS, where the message is used to configure the OFCS, such as configuring an OFLS parameter on the OFCS (such as a explicitly defined type of OFLS, or retaining an interface resource) The normal interface under the element) and the attached resource.
  • Step S704 the OFCS returns a Remote Procedure Call Protocol (RPC) reply message to the OF configuration point.
  • RPC Remote Procedure Call Protocol
  • the configuration point sends the type information of the OFLS to the corresponding OF controller.
  • FIG. 8 is a flowchart of a method 5 for reporting a switch type according to a preferred embodiment of the present invention, as shown in FIG. The process includes the following steps: Step S802: The OF configuration point sends the type of the OFLS to the corresponding OF controller, where the corresponding OF controller is the OF controller that controls the OFLS; specifically, the OF configuration The point can configure the corresponding OF controller for the OF logical switch.
  • the OF configuration point may also obtain the type of the OFLS or the reserved interface resource information that is supported by the Get-Config.
  • the reserved interface resource information includes the normal interface, that is, the hybrid mode is supported.
  • the embodiment of the present invention is a configuration point for querying the type of the OFLS instance on the OFCS
  • FIG. 9 is a flowchart of the method for reporting the switch type according to a preferred embodiment of the present invention.
  • the flow includes the following: step: Step S902, the OF configuration point sends a Get-Config message to the OFCS, where the message can be used to query the configuration parameters of the OFLS on the OFCS, such as the type of the OFLS or the reserved reserved interface resource information, the attached resource, and the like; S904.
  • the OFCS returns an rpc reply message to the OF configuration point, where at least the type of the OFLS or the reserved reserved interface resource information is carried.
  • FIG 7 is a flowchart of a method for reporting a switch type according to a preferred embodiment of the present invention.
  • the process includes the following steps: Step S1002: OpenFlow configuration point performs OpenFlow on an OpenFlow physical switch.
  • the type configuration of the logical switch instance or the OpenFlow configuration point queries the type information of the OpenFlow logical switch instance on the OpenFlow physical switch.
  • the corresponding OF controller is the OF controller that controls the OF logical switch; specifically, the OF configuration point may be configured by the OF logical switch to correspond to the OF controller.
  • the OF controller formulates a packet forwarding policy according to the type information of the OF switch, and sends the policy to the OF switch for execution.
  • the preferred embodiment of the present invention provides a flowchart of a method for reporting a switch type. The process includes the following steps:
  • the OpenFlow switch reports the type information of the switch to the OpenFlow controller actively or passively.
  • the type information of the OF switch includes a pure OF switch or a hybrid mode OF switch.
  • the hybrid mode OF switch indicates that the switch supports both the OpenFlow protocol-based packet forwarding and the traditional mode-based packet forwarding.
  • the hybrid mode OF switch supports the NORMAL interface defined by the OpenFlow protocol.
  • the type information of the OF switch can be represented by the OF switch type parameter, or the NORMAL interface attribute, or the label of the switch type.
  • the OF switch When the OpenFlow switch actively reports its type information to the OpenFlow controller, the OF switch reports the type information of the switch to the OF controller through the asynchronous message defined by the OpenFlow protocol. When the OpenFlow switch passively reports its type information to the OpenFlow controller, the OF switch receives the type information of the switch and sends the type information of the switch to the OF controller after receiving the request message from the OF controller.
  • the OpenFlow switch is an OpenFlow logical switch
  • the physical switch of the OpenFlow logical switch supports the traditional mode of packet forwarding.
  • the type of the OpenFlow logical switch can be configured as a pure OF by the local OAM or OF configuration point of the physical switch or the network management system. Switch or mixed mode OF switch.
  • the OF controller formulates a packet forwarding policy according to the type information of the OF switch, and sends the policy to the OF switch for execution. From the above description, it can be seen that the embodiment of the present invention achieves the following technical effects: The OF controller can simply acquire the benefit of the type of the OF switch. 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 and, in some cases, may be different from the order herein.
  • the method and apparatus for reporting a switch type provided by the embodiments of the present invention have the following beneficial effects:
  • the OF controller can simply obtain the type of the OF switch.

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Abstract

本发明提供了一种上报交换机类型的方法及装置,该方法包括以下至少之一:开放流OF交换机将上述OF交换机的类型上报给OF控制器;OF配置点在配置和/或获取上述OF交换机的类型后,将上述OF交换机的类型上报给上述OF控制器,其中,上述OF交换机是OF逻辑交换机。本发明解决了相关技术中OF控制器无法感知OF 交换机是哪一种类型的OF交换机的问题,具有OF控制器可以简单地获取到OF交换机的类型的有益效果。

Description

上报交换机类型的方法及装置 技术领域 本发明涉及通信领域, 具体而言, 涉及一种上报交换机类型的方法及装置。 背景技术 由于现在的网络暴露出了越来越多的弊病以及人们对网络性能的需求越来越高, 研究人员不得不把很多复杂功能加入到路由器的体系结构当中, 例如开放式最短路径 优先(Open Shortest Path First, 简称 OSPF)、边界网关协议 (Border Gateway Protocol, 简称 BGP)、 组播、 区分服务、 流量工程、 网络地址转换 (Network Address Translation, 简称 NAT;)、 防火墙、 多协议标签交换 (Multi protocol Label Switching, 简称 MPLS) 等等。 这就使得路由器等交换设备越来越臃肿而且性能提升的空间越来越小。 然而与网络领域的困境截然不同的是, 计算机领域实现了日新月异的发展。 仔细 回顾计算机领域的发展, 不难发现其关键在于计算机领域找到了一种简单可用的硬件 底层 (x86指令集)。 由于有了这样一种公用的硬件底层, 所以在软件方面, 不论是应用 程序还是操作系统都取得了飞速的发展。 现在很多主张重新设计计算机网络体系结构 的人士认为: 网络可以复制计算机领域的成功来解决现在网络所遇到的所有问题。 在 这种思想的指导下, 将来的网络必将是这样的: 底层的数据通路比如交换机、 路由器 等是 " *的、 简单的、 最小的", 并定义一个对外开放的关于流表的公用的 API, 同时 采用控制器来控制整个网络。 未来的研究人员就可以在控制器上自由的调用底层的 API来编程, 从而实现网络的创新。 基于上述的理念, 出现了软件定义网络 (Software Defined Network, 简称 SDN), 其最初是由美国斯坦福大学 clean slate研究组提出的一种如图 1所示的新型网络创新 架构。 目前, 如图 2所示, 其核心技术开放流 (OpenFlow, 简称 OF) 协议通过将网 络设备控制面 (包含 OpenFlow Controller) 与数据面 (包含 OpenFlow Logical Switch) 分离开来, 从而实现了网络流量的灵活控制, 为核心网络及应用的创新提供了良好的 平台。
OpenFlow协议是用来描述控制器和交换机之间交互所用信息的标准,以及控制器 和交换机的接口标准。 协议的核心部分是用于 OpenFlow协议信息结构的集合。 OpenFlow流表(图 2)或经过编排的多个流表级联而成管道用来配置交换机转发 路径 (图 3 ), 流表条目由匹配字段、 计数器和指令集等如下几个字段构成:
Figure imgf000004_0001
其中匹配字段(Match Fields)是报文匹配的输入关键字,用于匹配一条流表条目; 计数器(Counters) 是用于管理用的各种统计信息; 指令集 (Instructions)是指对报文 的操作指令, 包括丢弃、 转发报文到指定端口、 设置报文头部字段值、 增加封装标签 等。 动作集 (Action Set)和每个报文相关联, 它在管道的多个流表之间传递并被各流 表的指令所修改, 直到管道处理结束, 形成最终的动作集。 如图 3所示, 步骤 (1 ): 找到最高优先级的匹配流条目; 步骤 (2): 应用指令: 修改报文或更新匹配的域; 更新动作集; 更新元数据; 步骤 (3 ): 将匹配数据和动作 集发送给下一个流表。
OF交换机在标准中定义了有两种类型: 纯 OF交换机和混合模式 OF交换机。 对 于 OF逻辑交换机 (OpenFlow Logical Switch, 简称 OFLS)而言, 两种类型的差别仅仅 在于,后者需要支持 NORMAL这种保留接口,使得 OpenFlow流表管道可以将流量牵 引到传统的交换机或路由器的转发处理流程上。 但是目前的 OF协议没有定义 OF控制器如何感知 OFLS是哪一种类型, 这样 OF 控制器可能默认 OFLS是混合模式交换机类型, 然后根据 APP业务需求下发一些输出 (output) 到保留接口 "正常 (NORMAL)" 的流表条目。 虽然不支持 NORMAL的 OF交换机在收到输出 (output) 的接口为 NORMAL接 口的流表条目时, 可以回复错误 (error) 消息, 携带 OFPBAC_BAD_OUT_PORT 的 ofp_bad_action_code 值, 但是这需要控制器根据该错误信息和 output 的接口为 NORMAL来综合判断, 同时需要进一步要求 APP撤销该业务请求, 流程更加复杂, 而且这种感知 OF交换机类型的方式语义模糊, 不好理解。
OF控制器发现某个 OFLS是纯 OF交换机 (OpenFlow-only Switch), 应拒绝向其 下发 output到 NORMAL的流表条目。 图 3a是根据相关技术的 OF配置协议和 OF协议的应用架构图, OF配置点在配置 或获取 OF交换机的类型后,相关技术不支持 OF配置点将 OF交换机的类型通知给对 应的 OF控制器。 针对相关技术中 OF控制器无法感知 OF交换机是哪一种类型的 OF交换机的问题, 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上报交换机类型的方法及装置, 以至少解决上述问题。 根据本发明实施例的一个方面, 提供了一种上报交换机类型的方法, 包括: 开放 流 OF交换机将所述 OF交换机的类型上报给 OF控制器; OF配置点在配置和 /或获取 所述 OF交换机的类型后, 将所述 OF交换机的类型上报给所述 OF控制器, 其中, 所 述 OF交换机是 OF逻辑交换机。 优选地, 所述类型包括以下至少之一: 纯 OF交换机类型, 混合模式 OF交换机类 型。 优选地,所述混合 OF交换机类型表示所述 OF交换机既支持基于 OF协议的报文 转发,也支持基于传统模式的报文转发;和 /或所述纯模式 OF交换机类型表示所述 OF 交换机仅支持基于所述 OF协议的报文转发。 优选地, 所述类型通过以下至少之一来标识: 所述 OF交换机的类型参数, 正常 NORMAL接口属性, 所述 OF交换机的类型标识。 优选地,所述 OF交换机将所述 OF交换机的类型上报给所述 OF控制器包括以下 至少之一: 所述 OF交换机主动将所述 OF交换机的类型上报给所述 OF控制器; 所述 OF交换机响应所述 OF控制器的类型请求, 将所述 OF交换机的类型上报给所述 OF 控制器。 优选地, 所述 OF交换机响应所述 OF控制器的类型请求, 将所述 OF交换机的类 型上报给所述 OF控制器包括: 所述 OF交换机响应所述 OF控制器的类型请求, 向所 述 OF控制器发送类型响应消息, 其中, 所述类型响应消息中包含所述类型。 优选地, 在所述 OF交换机为 OF逻辑交换机、 且所述 OF逻辑交换机所在的 OF 物理交换机支持所述传统模式的报文转发的情况下, 所述 OF交换机的类型根据配置 的不同设置为所述纯 OF交换机类型或混合模式 OF交换机类型。 优选地, 所述 OF配置点配置和 /或获取所述 OF交换机的类型包括: 所述 OF配 置点对 OF物理交换机进行所述 OF逻辑交换机的类型配置; 和 /或所述 OF配置点从 所述 OF物理交换机上获取所述 OF逻辑交换机的类型。 优选地, 所述 OF配置点为所述 OF逻辑交换机配置对应的所述 OF控制器。 优选地,所述 OF交换机接收并执行所述 OF控制器根据所述类型制定的报文转发 策略。 根据本发明实施例的另一方面, 提供了一种上报交换机类型的方法, 包括: 开放 流 OF控制器接收以下至少之一: 接收 OF交换机上报的所述 OF交换机的类型; 接收 OF配置点在配置和 /或获取所述 OF交换机的类型后上报的所述 OF交换机的类型,其 中, 所述 OF交换机是 OF逻辑交换机。 优选地, 所述 OF控制器根据所述类型制定报文转发策略, 并将所述报文转发策 略发送给所述 OF交换机。 优选地,在所述 OF控制器接收到所述 OF配置点上报的所述类型的情况下,所述
OF控制器是管控所述逻辑 OF交换机的 OF控制器。 优选地,所述接收 OF交换机上报的所述 OF交换机的类型包括以下至少之一:接 收所述 OF交换机主动上报的所述 OF交换机的类型; 接收所述 OF交换机响应所述 OF控制器的类型请求上报的所述 OF交换机的类型。 根据本发明实施例的又一方面, 提供了一种上报交换机类型的装置, 设置在 OF 交换机上或 OF配置点上, 包括上报模块, 所述上报模块设置为以下至少之一: 将所 述 OF交换机的类型上报给 OF控制器; 在配置和 /或获取所述 OF交换机的类型后, 将所述 OF交换机的类型上报给所述 OF控制器, 其中, 所述 OF交换机是 OF逻辑交 换机。 优选地, 所述装置还包括执行模块, 设置为接收并执行所述 OF控制器根据所述 类型制定的报文转发策略。 根据本发明实施例的再一方面, 提供了一种上报交换机类型的装置, 设置在 OF 控制器上, 包括接收装置, 所述接收装置包括以下至少之一: 接收 OF交换机上报的 所述 OF交换机的类型, 接收 OF配置点在配置和 /或获取所述 OF交换机的类型后上 报的所述 OF交换机的类型。 优选地, 所述装置还包括制定模块, 设置为根据所述类型制定报文转发策略, 并 将所述报文转发策略发送给所述 OF交换机 通过本发明实施例, 采用以下至少之一技术方案: 开放流 OF 交换机将所述 OF 交换机的类型上报给 OF控制器; OF配置点在配置和 /或获取所述 OF交换机的类型后, 将所述 OF交换机的类型上报给所述 OF控制器, 其中, 所述 OF交换机是 OF逻辑交 换机,解决了相关技术中 OF控制器无法感知 OF交换机是哪一种类型的 OF交换机的 问题, 具有 OF控制器可以简单地获取到 OF交换机的类型的有益效果。 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是根据相关技术提供的 OpenFlow协议应用架构图; 图 2是根据相关技术提供的报文流通过 OpenFlow处理管道; 图 3是根据相关技术提供的基于每个流表的报文处理; 图 3a是根据相关技术的 OF配置协议和 OF协议的应用架构图; 图 4是根据本发明优选实施例的上报交换机类型的方法一的流程图; 图 5是根据本发明优选实施例的上报交换机类型的方法二的流程图; 图 6是根据本发明优选实施例的上报交换机类型的方法三的流程图; 图 7是根据本发明优选实施例的上报交换机类型的方法四的流程图; 图 8是根据本发明优选实施例的上报交换机类型的方法五的流程图; 图 9是根据本发明优选实施例的上报交换机类型的方法六的流程图; 以及 图 10是根据本发明优选实施例的一种上报交换机类型的方法七的流程图。 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。 本发明实施例提供了一种上报交换机类型的方法, 该方法包括以下至少之一: 开 放流 OF交换机将上述 OF交换机的类型上报给 OF控制器; OF配置点在配置和 /或获 取上述 OF交换机的类型后, 将上述 OF交换机的类型上报给上述 OF控制器, 其中, 上述 OF交换机是 OF逻辑交换机。通过上述方法, 解决了相关技术中 OF控制器无法 感知 OF交换机是哪一种类型的 OF交换机的问题,具有 OF控制器可以简单地获取到 OF交换机的类型的有益效果。
OF 交换机的类型可以有很多种, 优选地, 所述类型可以包括以下至少之一: 纯 OF交换机类型, 混合模式 OF交换机类型。 当然, 在其他实施例中, 也可以是其他类 型。其中, 所述混合 OF交换机类型表示所述 OF交换机既支持基于 OF协议的报文转 发, 也支持基于传统模式的报文转发; 和 /或所述纯模式 OF交换机类型表示所述 OF 交换机仅支持基于所述 OF协议的报文转发。 标识 OF交换机的类型的方式有很多种, 优选地, 所述类型可以通过以下至少之 一来标识: 所述 OF交换机的类型参数, 正常 NORMAL接口属性, 所述 OF交换机的 类型标识。通过上述标识方式,可以非常简单快捷地使 OF控制器识别出 OF交换机的 类型。 上报 OF交换机的方式有很多种, 优选地, 所述 OF交换机可以主动将所述 OF交 换机的类型上报给所述 OF控制器; 当然, 所述 OF交换机还可以响应所述 OF控制器 的类型请求,将所述 OF交换机的类型上报给所述 OF控制器。在本发明的一个实施例 中, 所述 OF交换机还可以响应所述 OF控制器的类型请求, 向所述 OF控制器发送类 型响应消息, 其中, 所述类型响应消息中包含所述类型。 优选地, 在所述 OF交换机为 OF逻辑交换机、 且所述 OF逻辑交换机所在的 OF 物理交换机支持所述传统模式的报文转发的情况下, 所述 OF交换机的类型根据配置 的不同设置为所述纯 OF交换机类型或混合模式 OF交换机类型。 优选地, 所述 OF配置点配置和 /或获取所述 OF交换机的类型可以包括: 所述 OF 配置点对 OF物理交换机进行所述 OF逻辑交换机的类型配置; 和 /或所述 OF配置点 从所述 OF物理交换机上获取所述 OF逻辑交换机的类型。其中, 所述 OF配置点为所 述 OF逻辑交换机配置对应的所述 OF控制器。 OF逻辑交换机的类型也可以由物理交 换机本地 OAM或 OF配置点或网络管理系统配置为纯 OF交换机或混合模式 OF交换 机。在完成上述配置之后, OF配置点可以从物理交换机本地获取 OF交换机的类型, 也可以在 OF交换机的类型是 OF配置点配置的情况下从 OF配置点自身获取 OF交换 机的类型, 还可以从网络管理系统获取 OF交换机的类型。 OF配置点在获取到 OF交 换机的类型后, 将该 OF交换机的类型上报给 OF控制器。 优选地,所述 OF交换机接收并执行所述 OF控制器根据所述类型制定的报文转发 策略。 本发明实施例还提供了一种上报交换机类型的方法, 该方法包括: 开放流 OF 控制器接收以下至少之一: 接收 OF交换机上报的所述 OF交换机的类型, 接收 OF配 置点在配置和 /或获取所述 OF交换机的类型后上报的所述 OF交换机的类型, 其中, 所述 OF交换机是 OF逻辑交换机。 优选地, 所述 OF控制器根据所述类型制定报文转发策略, 并将所述报文转发 策略发送给所述 OF交换机。 优选地,在所述 OF控制器接收到所述 OF配置点上报的所述类型的情况下,所述 OF控制器是管控所述逻辑 OF交换机的 OF控制器。 优选地,所述接收 OF交换机上报的所述 OF交换机的类型包括以下至少之一:接 收所述 OF交换机主动上报的所述 OF交换机的类型; 接收所述 OF交换机响应所述 OF控制器的类型请求上报的所述 OF交换机的类型。本发明实施例还提供了一种上报 交换机类型的装置, 设置在 OF交换机上或 OF配置点上, 该装置包括上报模块, 所述 上报模块设置为以下至少之一: 将 OF交换机的类型上报给 OF控制器; 在配置和 /或 获取所述 OF交换机的类型后,将所述 OF交换机的类型上报给所述 OF控制器,其中, 所述 OF交换机是 OF逻辑交换机。 优选地, 所述装置还包括执行模块, 设置为接收并执行所述 OF控制器根据所述 类型制定的报文转发策略。 本发明实施例还提供了一种上报交换机类型的装置, 设置在 OF控制器上, 该装 置包括接收装置, 所述接收装置包括以下至少之一: 接收 OF交换机主动上报的所述 OF交换机的类型,接收 OF配置点在配置和 /或获取所述 OF交换机的类型后上报的所 述 OF交换机的类型。 优选地, 所述装置还包括制定模块, 设置为根据所述类型制定报文转发策略, 并 将所述报文转发策略发送给所述 OF交换机。 优选实施例一 本发明实施例通过 OFLS描述消息查询 OFLS的类型, 图 4是根据本发明优选实 施例的上报交换机类型的方法一的流程图, 如图 4所示, 该流程包括以下步骤: 步骤 S402, OF控制器向 OFLS发送多部件描述请求消息 (Multipart Description Request), 该消息用来查询 OFLS的制造商、 软硬件版本、 序列号等 OFLS的描述信 息; 步骤 S404, OFLS向 OF控制器回复多部件描述回复消息 (Multipart Description Reply), 其中,该消息除了携带 OFLS的制造商、 软硬件版本、 序列号等参数外, 还携 带该 OFLS的类型参数,比如如纯 OF交换机或混合模式的交换机。 本发明实施例需要扩展多部件描述回复消息的报文协议。 优选实施例二 本发明实施例通过接口描述消息查询 OFLS的类型, 图 5是根据本发明优选实施 例的上报交换机类型的方法二的流程图, 如图 5所示, 该流程包括以下步骤: 步骤 S502, OF 控制器向 OFLS 发送多部件接口描述请求消息 (Multipart Port Description Request), 该消息用来查询 OFLS的所有接口的描述信息; 步骤 S504, OFLS 向 OF 控制器回复多部件接口描述回复消息 (Multipart Port
Description Reply ), 其中该消息除了携带该 OFLS 上所有的物理端口、 逻辑端口、 LOCAL预留端口外,若该 OFLS为混合模式的交换机则必须还携带 NORMAL预留端 口的描述信息,只有混合模式 OF交换机支持 OpenFlow协议定义的 NORMAL这种保 留接口。 该实施例中并没有扩展多部件接口描述回复消息的报文格式, 仅仅扩展了报文格 式中端口号 (port_no) 字段的值域, 要求支持 NORMAL这种预留端口。 优选实施例三 本发明实施例是过特征消息查询 OFLS的类型, 图 6是根据本发明优选实施例的 上报交换机类型的方法三的流程图, 如图 6所示, 该流程包括以下步骤: 步骤 S602, OF控制器向 OFLS发送特征请求消息(OFPT_FEATURES_Request), 该消息用来查询 OFLS的基本能力; 步骤 S604,OFLS向 OF控制器回复特征请求回复消息(OFPT_FEATURES_Reply), 其中, 该消息除了携带该 OFLS的基本能力如流统计、表统计等能力外,还携带 OFLS 类型标记;该 OFLS类型标识用来表示该 OFLS是纯 OF交换机还是混合模式的 OF交 换机。 该实施例在特征请求消息的能力(capabilities)字段中扩展一个标记位, 表达是否 支持混合模式。 优选实施例四 本发明实施例是配置点对 OFCS上的 OFLS实例进行类型配置, 图 7是根据本发 明优选实施例的上报交换机类型的方法四的流程图, 如图 7所示, 该流程包括以下步 骤: 步骤 S702, OF配置点向 OFCS发送编辑配置 (Edit-Config) 消息, 该消息用来 对 OFCS进行配置, 如配置 OFCS上 OFLS的参数 (如明确定义的 OFLS的类型, 或 保留接口资源的元素下的 normal接口) 和挂接资源。 步骤 S704, OFCS 向 OF配置点回复远程程序调用协议 (Remote Procedure Call Protocol, 简称 rpc) 回复消息。 优选实施例五 本发明实施例中, 配置点将 OFLS的类型信息发送给对应的 OF控制器, 图 8是 根据本发明优选实施例的上报交换机类型的方法五的流程图, 如图 8所示, 该流程包 括以下步骤: 步骤 S802, OF配置点向对应的 OF控制器发送 OFLS的类型; 其中, 所 述对应的 OF控制器为管控所述 OFLS的那台 OF控制器; 具体地, OF配置点可以为 OF 逻辑交换机配置对应的 OF 控制器。 其中, OF 配置点也可以通过获取配置消息 ( Get-Config)获取所述 OFLS的类型或所支持的保留接口资源信息,该保留接口资源 信息包括 normal接口即支持混合模式。 优选实施例六 本发明实施例是配置点查询 OFCS上的 OFLS实例的类型, 图 9是根据本发明优 选实施例的上报交换机类型的方法六的流程图, 如图 9所示, 该流程包括以下步骤: 步骤 S902, OF配置点向 OFCS发送获取配置(Get-Config)消息, 该消息可以用 来查询 OFCS上 OFLS的配置参数, 如 OFLS的类型或所支持的保留接口资源信息、 挂接资源等; 步骤 S904, OFCS向 OF配置点回复 rpc回复消息,其中至少携带 OFLS的类型或 或所支持的保留接口资源信息。 优选实施例七 图 10 是根据本发明优选实施例的一种上报交换机类型的方法七的流程图, 如图 10所示, 该流程包括以下步骤: 步骤 S1002, OpenFlow配置点对 OpenFlow物理交换机进行 OpenFlow逻辑交换 机实例的类型配置或 OpenFlow配置点查询 OpenFlow物理交换机上 OpenFlow逻辑交 换机实例的类型信息。 步骤 S1004, OpenFlow配置点将 OpenFlow逻辑交换机的类型信息发送给对应的 OpenFlow控制器。 其中, 所述对应的 OF控制器为管控所述 OF逻辑交换机的那台 OF控制器; 具体 地, OF配置点可以为 OF逻辑交换机配置对应的 OF控制器。 其中, OF控制器根据 OF交换机的类型信息制定报文转发策略, 并下发给 OF交 换机执行。 优选实施例八 本发明优选实施例提供了一种上报交换机类型的方法的流程图, 该流程包括以下 步骤: OpenFlow交换机将自己的类型信息主动或被动上报给 OpenFlow控制器。 其中, OF交换机的类型信息包括纯 OF交换机或混合模式 OF交换机。 其中, 混合模式 OF交换机表示该交换机既支持基于 OpenFlow协议的报文转发, 同时支持基于传统模式的报文转发; 混合模式 OF交换机支持 OpenFlow协议定义的 NORMAL这种保留接口。 其中, OF交换机的类型信息可以通过 OF交换机类型参数、 或者 NORMAL接口 属性、 或者交换机类型的标记来体现。 其中, OpenFlow交换机将自己的类型信息主动上报给 OpenFlow控制器时, OF 交换机通过 OpenFlow协议定义的异步消息将交换机的类型信息上报给 OF控制器。 其中, OpenFlow交换机将自己的类型信息被动上报给 OpenFlow控制器时, OF 交换机在收到 OF控制器的请求消息后, 将交换机的类型信息包含在回复消息里发送 给 OF控制器。 其中, OpenFlow交换机为 OpenFlow逻辑交换机时, 该 OpenFlow逻辑交换机所 在的物理交换机支持传统模式的报文转发, 则 OpenFlow逻辑交换机的类型可以由物 理交换机本地 OAM或 OF配置点或网络管理系统配置为纯 OF交换机或混合模式 OF 交换机。 其中, OF控制器根据 OF交换机的类型信息制定报文转发策略, 并下发给 OF交 换机执行。 从以上的描述中, 可以看出, 本发明实施例实现了如下技术效果: 具有 OF控制 器可以简单地获取到 OF交换机的类型的有益效果。 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上报交换机类型的方法及装置具有以下 有益效果: OF控制器可以简单地获取到 OF交换机的类型。

Claims

权 利 要 求 书
1. 一种上报交换机类型的方法, 包括以下至少之一:
开放流 OF交换机将所述 OF交换机的类型上报给 OF控制器;
OF配置点在配置和 /或获取所述 OF交换机的类型后,将所述 OF交换机的 类型上报给所述 OF控制器, 其中, 所述 OF交换机是 OF逻辑交换机。
2. 根据权利要求 1所述的方法, 其中, 所述类型包括以下至少之一: 纯 OF交换 机类型, 混合模式 OF交换机类型。
3. 根据权利要求 2所述的方法, 其中, 所述混合模式 OF交换机类型表示所述 OF交换机既支持基于 OF协议的报 文转发, 也支持基于传统模式的报文转发; 和 /或
所述纯 OF交换机类型表示所述 OF交换机仅支持基于所述 OF协议的报文 转发。
4. 根据权利要求 1所述的方法, 其中, 所述类型通过以下至少之一来标识: 所述 OF交换机的类型参数,正常 NORMAL接口属性,所述 OF交换机的类型标识。
5. 根据权利要求 1所述的方法, 其中, 所述 OF交换机将所述 OF交换机的类型 上报给所述 OF控制器包括以下至少之一:
所述 OF交换机主动将所述 OF交换机的类型上报给所述 OF控制器; 所述 OF交换机响应所述 OF控制器的类型请求,将所述 OF交换机的类型 上报给所述 OF控制器。
6. 根据权利要求 5所述的方法, 其中, 所述 OF交换机响应所述 OF控制器的类 型请求, 将所述 OF交换机的类型上报给所述 OF控制器包括: 所述 OF交换机 响应所述 OF控制器的类型请求, 向所述 OF控制器发送类型响应消息, 其中, 所述类型响应消息中包含所述类型。
7. 根据权利要求 1所述的方法, 其中, 在所述 OF交换机为 OF逻辑交换机、 且 所述 OF逻辑交换机所在的 OF物理交换机支持所述传统模式的报文转发的情 况下, 所述 OF交换机的类型根据配置的不同设置为所述纯 OF交换机类型或 混合模式 OF交换机类型。
8. 根据权利要求 1所述的方法, 其中, 所述 OF配置点配置和 /或获取所述 OF交 换机的类型包括:
所述 OF配置点对 OF物理交换机进行所述 OF逻辑交换机的类型配置;和
/或
所述 OF配置点从所述 OF物理交换机上获取所述 OF逻辑交换机的类型。
9. 根据权利要求 8所述的方法, 其中, 所述 OF配置点为所述 OF逻辑交换机配 置对应的所述 OF控制器。
10. 根据权利要求 1至 7中任一项所述的方法, 其中, 所述 OF交换机接收并执行 所述 OF控制器根据所述类型制定的报文转发策略。
11. 一种上报交换机类型的方法, 包括: 开放流 OF控制器接收以下至少之一: 接收 OF交换机上报的所述 OF交换机的类型; 接收 OF配置点在配置和 /或获取所述 OF交换机的类型后上报的所述 OF 交换机的类型, 其中, 所述 OF交换机是 OF逻辑交换机。
12. 根据权利要求 11所述的方法, 其中, 所述 OF控制器根据所述类型制定报文转 发策略, 并将所述报文转发策略发送给所述 OF交换机。
13. 根据权利要求 11所述的方法, 其中, 在所述 OF控制器接收到所述 OF配置点 上报的所述类型的情况下,所述 OF控制器是管控所述逻辑 OF交换机的 OF控 制器。
14. 根据权利要求 11所述的方法, 其中, 所述接收 OF交换机上报的所述 OF交换 机的类型包括以下至少之一:
接收所述 OF交换机主动上报的所述 OF交换机的类型;
接收所述 OF交换机响应所述 OF控制器的类型请求上报的所述 OF交换机 的类型。
15. 一种上报交换机类型的装置, 设置在 OF交换机上或 OF配置点上, 包括上报 模块, 所述上报模块设置为以下至少之一:
将所述 OF交换机的类型上报给 OF控制器;
在配置和 /或获取所述 OF交换机的类型后, 将所述 OF交换机的类型上报 给所述 OF控制器, 其中, 所述 OF交换机是 OF逻辑交换机。
16. 根据权利要求 15所述的装置, 其中, 所述装置还包括执行模块, 设置为接收并 执行所述 OF控制器根据所述类型制定的报文转发策略。
17. 一种上报交换机类型的装置, 设置在 OF控制器上, 包括接收装置, 所述接收 装置包括以下至少之一: 接收 OF交换机上报的所述 OF交换机的类型, 接收 OF配置点在配置和 /或获取所述 OF交换机的类型后上报的所述 OF交换机的类 型。
18. 根据权利要求 17所述的装置, 其中, 所述装置还包括制定模块, 设置为根据所 述类型制定报文转发策略, 并将所述报文转发策略发送给所述 OF交换机。
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