Method and device for collecting topological information in SDN network

A topology information and network technology, applied in the field of network communication, can solve problems such as the inability to collect three-layer topology information

Active Publication Date: 2015-01-28
NEW H3C TECH CO LTD
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Problems solved by technology

[0003] At present, the SDN network uses LLDP (Link Layer Discovery Protocol, Link Layer Discovery Protocol) protocol and SDN management protocol (interaction protocol between SDN controller and SDN switching equipment, such as OpenFlow protocol) to carry out network topology information. Collect, but this method can only obtain the physical topology information of the network, and cannot collect the layer 3 topology information of the network

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  • Method and device for collecting topological information in SDN network
  • Method and device for collecting topological information in SDN network
  • Method and device for collecting topological information in SDN network

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[0023] In order to make the purpose, technical solutions and advantages of the present application clearer, the solutions described in the present application will be further described in detail below with reference to the accompanying drawings.

[0024] figure 1 Shown is a typical structural diagram of an SDN network. The SDN network consists of controllers and switching devices (SW1, SW2, SW3, and SW4). Among them, the controller is responsible for collecting network topology information, calculating the forwarding path of service packets and generating forwarding flow entries. The flow entry forwards the service packets.

[0025] Currently, in the SDN network, the LLDP protocol and the SDN management protocol (the interaction protocol between the SDN controller and the SDN switching device, such as the OpenFlow protocol) are usually used to collect the physical topology information of the network. However, when converting from physical topology information to layer-3 topo...

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Abstract

The invention provides a method and device for collecting topological information in an SDN network. The method and device are applied to first exchange equipment in the SDN network. The first exchange equipment and second exchange equipment are adjacent, and the first exchange equipment is connected with a second interface of the second exchange equipment through a first interface. The method comprises the steps that a second equipment identification and a second interface IP address of the second exchange equipment are acquired; first adjacency information is generated according to the second equipment identification and the second interface IP address, and the adjacency information is sent to a controller, wherein the adjacency information carries the first adjacency information, so that when the first adjacency information and the second adjacency information sent by the second exchange equipment are matched, the controller generates the adjacency relation between the first exchange equipment and the second exchange equipment. According to the method and device, the three layers of topological information of the SDN network can be directly connected.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method and device for collecting topology information in an SDN network. Background technique [0002] SDN (Software Defined Networks, software-defined network) is a new type of network innovation architecture, which realizes flexible control of network traffic by separating the control plane and data plane. The SDN network consists of SDN controllers and SDN switching devices. Among them, the SDN controller is responsible for collecting network topology information, calculating the forwarding path of the service message and generating the forwarding flow table, and the SDN switching device forwards the service message according to the flow table issued by the SDN controller. [0003] At present, the SDN network uses LLDP (Link Layer Discovery Protocol, Link Layer Discovery Protocol) protocol and SDN management protocol (interaction protocol between SDN controlle...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/751H04L45/02
Inventor 叶金荣
Owner NEW H3C TECH CO LTD
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