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Method and device for forwarding IP (internet protocol) routes

An IP routing and routing technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve the problem of increased pressure on gateway switching equipment, failure to meet the requirements of service forwarding, and the inability of SDN controllers to realize cross-IP network control and forwarding and other issues to achieve the effect of flexible control

Active Publication Date: 2014-12-24
NEW H3C TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, all packets forwarded across VLANs must pass through the gateway switching device, which increases the pressure on the gateway switching device
Moreover, when the user-side device is not a host but another IP network, simply relying on the SDN controller to learn from the host cannot meet the requirements of service forwarding. At this time, the SDN controller cannot implement control and forwarding across IP networks.

Method used

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  • Method and device for forwarding IP (internet protocol) routes
  • Method and device for forwarding IP (internet protocol) routes
  • Method and device for forwarding IP (internet protocol) routes

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Embodiment Construction

[0060] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0061] In this embodiment, a uniquely identified IP address is assigned to each OpenFlow switch in the SDN network, and the OpenFlow switch connected to the traditional network (that is, the IP network) acts as an edge switching device (also referred to as a source switch), The routing information learned from the traditional network is sent to the SDN controller, and the SDN controller sends the second flow table of the routing information to other OpenFlow switches except the edge switching device, where the matching item is the prefix in the routing information Address, the action is to specify the next hop, and the next hop address is the IP address of the edge switching device. Through the above operations, the routing information in the traditional network i...

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Abstract

The invention provides a method and a device for forwarding IP (internet protocol) routes. The method includes steps executed by an SDN (software defined network) controller in an architecture of the SDN that IP addresses reported by various OpenFlow exchanger are received; first flows are issued to each OpenFlow exchanger, matching items of the first flows are the IP addresses of destination OpenFlow exchangers, and next hop addresses are designated as the matching items; route information of a conventional network is received from the OpenFlow exchangers as edge switching devices; second flows are issued to the OpenFlow exchangers except those as the edge switching devices, matching items of the second flows are prefix addresses in the route information, and next hop addresses are designated as the IP addresses of the edge switching devices.

Description

technical field [0001] The present invention belongs to the technical field of OpenFlow in the software defined network (Software Defined Network, SDN) architecture, and in particular to a method and device for realizing IP routing and forwarding. Background technique [0002] The SDN architecture uses OpenFlow technology to separate the control plane and data plane of network devices, thereby realizing flexible control of network traffic. Correspondingly, the SDN architecture includes an SDN controller and an OpenFlow switching device, wherein: the SDN controller and the OpenFlow switching device communicate through an OpenFlow channel, and the SDN controller generates a flow table according to user configuration or a dynamically running protocol and sends it to An OpenFlow switching device. The OpenFlow switching device processes packets according to the flow table issued by the SDN controller. [0003] Currently, the SDN architecture supports multiple services for users,...

Claims

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Application Information

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IPC IPC(8): H04L12/741H04L45/74
Inventor 宋小恒
Owner NEW H3C TECH CO LTD