Forwarding information state synchronization method, controller, network forwarding device and storage medium

A state synchronization and network forwarding technology, applied in the field of network communication, can solve problems affecting business continuity and achieve the effect of reducing the amount of information interaction, maintaining continuity and reducing processing burden
CN110943928BActive Publication Date: 2022-01-07ZTE CORP
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
ZTE CORP
Publication Date
2022-01-07

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Abstract

The embodiment of the present invention discloses a forwarding information state synchronization method, controller, network forwarding device and storage medium, wherein the method includes: when detecting that the network forwarding device resumes connection, sending a state synchronization request to it, and notifying the network forwarding device Re-set the timeout aging time for its local flow table group table; when it is detected that the timeout aging time setting is successful, send the static flow table group table information to the network forwarding device, instructing it to update the local flow table group table synchronously; When receiving the notification that the network forwarding device deletes the timeout and aging dynamic flow table group table, judge whether the flow table group table needs to be maintained according to the change of the network resource state; if not, then accept the deletion of the flow table group table of the network forwarding device Behavior; if yes, re-deliver the flow table group table to the network forwarding device. The embodiment of the present invention reduces the amount of information interaction between the controller and the network equipment, improves the reliability of the SDN network, and can maintain service continuity.
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Description

technical field

[0001] The invention relates to the technical field of network communication, in particular to a forwarding information state synchronization method, a controller, a network forwarding device and a storage medium. Background technique

[0002] The network technology in today's world is changing with each passing day, based on Transmission Control Protocol / Internet Protocol (Transmission Control Protocol / Internet Protocol, TCP / IP), Open Shortest Path First / Border Gateway Protocol (Open Shortest Path First / Border Gateway Protocol, OSPF / BGP ) and other technologies have encountered more and more problems and challenges in many aspects such as service quality experience, service deployment, and service adaptation. The software-defined network (Software Defined Network, SDN) proposed by Stanford University proposes that a centralized controller realizes user customization of forwarding plane equipment, and provides users with a programmable application programming...

Claims

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