A flow table protection method based on ovsdb
A first-class flow meter and flow meter technology, applied in digital transmission systems, data exchange networks, electrical components, etc., can solve problems such as increased probability of occurrence, controller flow meter conflicts, and damage to the controller's control of the switch to achieve guaranteed The effect of using
Active Publication Date: 2021-09-14
SHANGHAI COMMITTEE CHINA TELECOM GRP LABOR UNION
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Problems solved by technology
[0003] At present, in order to make up for the fact that the switch still maintains certain business capabilities when the controller is disconnected, the existing technology imports the static service backup flow table into the SDN switch through the maintenance channel. There is a problem of conflict with the controller flow table, that is, the switch is connected to the controller. During the period, importing the flow table through the maintenance channel may destroy the control of the controller to the switch. In the case of a long service backup flow table, the probability of occurrence increases
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[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0032] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
[0034] In a preferred embodiment of the present invention, based on the above-mentioned problems existing in the...
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The invention discloses an OVSDB-based flow table protection method, including: providing a first flow table for storing only the open flow matching information of the basic service of the SDN switch; providing a storage unit, which is set in the SDN switch for Save the first flow table; read the first flow table from the storage unit when the SDN switch is not connected to the network controller, and use the first flow table as the current flow table; obtain a second flow table from the network controller when the connection between the SDN switch and the network controller is restored. flow table, and use the second flow table as the current flow table. In the present invention, when the SDN switch is not connected to the network controller and when it is connected, the first flow table and the second flow table are respectively used to ensure the normal operation of the service. And modify the first flow table import method to ensure the absolute control of the first flow table after the network controller is connected and when there is a problem with the second flow table issued by the network controller, the first flow table can be quickly switched and put into use, thus Guarantee the use of basic services.
Description
technical field [0001] The present invention relates to the technical field of SDN (Software Defined Network, software defined network), in particular to a flow table protection method based on OVSDB (Open vSwitch Database Management Protocol, Open Virtual Switch Database Management Protocol). Background technique [0002] SDN is a new type of network innovation architecture and a way to realize network virtualization. By separating the control plane of network equipment from the data plane, it realizes flexible control of network traffic and makes the network more efficient as a pipeline. intelligent. [0003] At present, in order to make up for the fact that the switch still maintains certain business capabilities when the controller is disconnected, the existing technology imports the static service backup flow table into the SDN switch through the maintenance channel. There is a problem of conflict with the controller flow table, that is, the switch is connected to the c...
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IPC IPC(8): H04L12/931H04L12/24
CPCH04L41/0654H04L49/70
Inventor 夏俊姜雨涵汤力杨炳丰吴飞梁杰
Owner SHANGHAI COMMITTEE CHINA TELECOM GRP LABOR UNION