Flow table backup method and device
A flow meter and backup technology, applied in the direction of digital transmission system, electrical components, transmission system, etc., can solve the problems of flow meter difference, loss of flow meter, restart of ovs host after failure, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0043] The flow table backup method of the present disclosure will be specifically described below by way of specific examples. figure 2 A schematic flow diagram of the flow table backup method provided for this disclosure, such as figure 2 As shown, this method is applied to the controller, and the controller can periodically execute the following methods, including:
[0044] Step 201, sending a detection message to the managed network switching device, the detection message is used to count the east-west traffic between the internal network hosts, and the traffic between the internal network host and the user network edge device reaching the external network Whether the north-south traffic is normal.
[0045] The network switching devices managed by the controller may generally include devices such as routers and switches. In this embodiment, a virtual switch OVS is used as an example for network switching equipment to be described later.
[0046] East-west traffic gene...
Embodiment 2
[0056] On the basis of the first embodiment above, if the controller determines that there is no added or deleted flow table and determines that the traffic is normal according to the detection message, the controller can also send a synchronization command to the managed network switching device. The instruction may cause the network switching device receiving the synchronization instruction to also back up the flow table stored by itself. Therefore, if the network switching device fails and restarts, the flow table can automatically restore the flow table from the flow table file backed up by the network switching device itself, avoiding traffic problems caused by direct recovery from the controller.
[0057] In one embodiment, a detection script program may be installed on the network switching device to monitor whether the network switching device is restarted. When the network switching device restarts, resulting in the loss of all the flow tables on the network switching...
Embodiment 3
[0061] This embodiment will introduce in detail the process of delivering a detection message.
[0062] Wherein, step 201 specifically includes:
[0063] Step 2011, issue a statistical flow table to the managed network switching device, the matching items of the statistical flow table include the source IP address and destination IP address of the path to be detected and the preset protocol type, and the action items include: statistically match the The number of packets in the flow table.
[0064] Step 2012, sending the detection message of the preset protocol type to the network switching device, the source IP address of the detection message of the preset protocol type is the same as the source IP address in the matching item of the statistical flow table , the destination IP address of the detection packet of the preset protocol type is the same as the destination IP address in the matching item of the statistical flow table.
[0065] In this embodiment, the figure 1 Ta...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com