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Stream table entry generating method and device

A flow entry and node technology, applied in the field of communication, can solve the problems affecting the efficiency of flow entry generation and the low efficiency of business path calculation, and achieve the effect of reducing time complexity and improving efficiency.

Active Publication Date: 2014-05-21
HUAWEI TECH CO LTD
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  • Application Information

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Problems solved by technology

[0011] If there are n routers 110 in the IP layer and m optical layer devices 120 in the optical layer, in this layered management mode, the time complexity is n*m, resulting in very low efficiency of service path calculation, which in turn affects flow entries Generated efficiency

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  • Stream table entry generating method and device

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Embodiment Construction

[0036] In the following description, for purposes of illustration rather than limitation, specific details, such as specific system architectures, interfaces, and techniques, are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0037] refer to figure 2 , figure 2 It is a flowchart of an embodiment of a method for generating a flow entry in this application. The method for generating a flow entry in this embodiment includes the following steps:

[0038] S201: The controller receives a service path establishment request. Wherein, the service path establishment request includes constraints, source equi...

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Abstract

The invention discloses a stream table entry generating method and device. The method comprises the following steps: receiving a service path establishing request, wherein the service path establishing request comprises a constraint condition, source equipment and target equipment; finding a service path which satisfies the constraint condition and ranges from the source equipment to the target equipment in a data transmission network according to a cross-layer information model, wherein the cross-layer information model is a model describing an integral topological relation between an IP (Internet Protocol) layer and a light layer on the same level; generating a respective stream table entry corresponding to each piece of forwarding equipment respectively on the service path, and transmitting the stream table entries to corresponding forwarding equipment respectively. According to the scheme, resources of the IP layer and resources of the light layer are considered during calculation of the service path according to the cross-layer information model in which the resources of the IP layer and the resources of the light layer are on the same level, thereby greatly lowering the time complexity of business path calculation, increasing the service path calculation efficiency, and increasing the generation efficiency of the stream table entries.

Description

technical field [0001] The present application relates to the communication field, and in particular to a flow entry generation method and device. Background technique [0002] Software-defined network (Software Defined Network, SDN) is a new type of network architecture. Compared with the search IP route used in traditional networks, SDN / OpenFlow can achieve flexible control of network traffic and provide a good solution for core network and application innovation. The platform is the direction of future network architecture development. [0003] The existing SDN network adopts the dual-controller scheme of IP layer controller + optical layer controller, in which the IP layer controller is responsible for managing the resources of the IP layer, and the optical layer controller is responsible for managing the resources of the optical layer. layer management mode. [0004] However, in the existing layered management mode, the process of obtaining the service path is very co...

Claims

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Application Information

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IPC IPC(8): H04L12/741H04L45/74
CPCH04L45/38H04L45/62H04L45/64H04L12/6418H04L2012/6421
Inventor 宋雪飞夏寅贲陈超
Owner HUAWEI TECH CO LTD
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