The method, controller and destination switching node to obtain the sdn whole network view
A switching node and controller technology, applied in the field of network communication, can solve the problem that the controller cannot obtain the view of the entire SDN network
Active Publication Date: 2019-12-03
MAIPU COMM TECH CO LTD
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[0004] The embodiment of the present application provides a solution for obtaining a view of the entire SDN network, which is used to solve the problem that the controller cannot obtain a complete view of the entire SDN network when the intermediate node and / or the intermediate network between two switching nodes cannot transparently transmit LLDP frames technical issues
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[0041]The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.
[0042] The embodiment of this application is applicable to a kind of SDN, such as figure 1 As shown, the SDN includes a controller 10 and four switching nodes 11 to 14, wherein the controller 10 and the switching nodes 11 to 14 are respectively connected through bidirectional control links such as A, B, C and D, and the bidirectional control links use Transmission of control signaling such as packet-out messages and packet-in messages between the controller 10 and switching nodes; different ...
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The application discloses a method for obtaining an SDN full network view, a controller and a destination switching node, which relate to the technical field of communication networks and can solve the technical problem that the controller cannot obtain a complete view of the entire network. The method comprises: after the source switching node receives the source LLDP encapsulated frame sent by the controller, according to the source switching node information carried by the source LLDP encapsulated frame, sending the source LLDP encapsulated frame to the destination switching node; if the destination switching node receives the source LLDP encapsulated frame from the controller If the received destination encapsulation information matches the source encapsulation information carried in the source LLDP encapsulation frame received by the destination switching node from the source switching node, the destination switching node sends the destination LLDP encapsulation frame containing the destination switching node information and the source LLDP encapsulation frame to the controller. Frame framing, so that after the controller receives the destination LLDP encapsulated frame, it can obtain the link information between the source switching node and the destination switching node according to the information of the destination switching node and the information of the source switching node. The solution provided by this application is suitable for the process in which the controller obtains the view of the entire SDN network.
Description
technical field [0001] The present application relates to the technical field of network communication, and in particular to a method, a controller and a destination switching node for acquiring an SDN network view. Background technique [0002] In an existing software-defined network (Software Defined Network, SDN), the controller acquires a view of the entire network based on a link layer discovery protocol (Link Layer Discovery Protocol, LLDP). Specifically, the controller first sends an LLDP frame and a source flow table to a switching node (hereinafter referred to as the source switching node) directly connected to the controller through a packet-out message, wherein the LLDP frame contains the information of the source switching node, and the source flow table is used for Instruct the switching node to forward the LLDP frame to other adjacent switching nodes (hereinafter referred to as the destination switching node); after the destination switching node receives the L...
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IPC IPC(8): H04L12/751H04L12/741H04L29/06H04L45/02H04L45/74
CPCH04L45/02H04L45/74H04L69/16Y02D30/00
Inventor 董青
Owner MAIPU COMM TECH CO LTD