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A method and device for generating a forwarding table

A technology of forwarding tables and forwarding table items, which is applied in the field of network communication, and can solve problems such as wrong forwarding of network traffic, non-optimal path transmission of traffic, packet loss, etc.

Active Publication Date: 2019-09-20
HANGZHOU DPTECH TECH
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Problems solved by technology

[0003] However, in some actual application scenarios, due to unreasonable network planning, network changes, etc., some secondary subnets may exist separately from their primary subnets in the network, that is, these separate secondary subnets may be managed by other Routing device management, and under this condition, if the first routing device publishes the routing information of the first-level subnet to the second routing device, it is likely that the second routing device will match the information of these separate second-level subnets. Network traffic is incorrectly forwarded to the first routing device, resulting in packet loss, non-optimal routing of traffic, and routing loops

Method used

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  • A method and device for generating a forwarding table
  • A method and device for generating a forwarding table
  • A method and device for generating a forwarding table

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[0040] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0041] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term...

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Abstract

The present application provides a method and device for generating a forwarding table. In this application, the aggregation device can make the decision-making device generate a new forwarding table by publishing the routing message containing the discrete subnet determined based on the aggregated subnet, and use the new forwarding table to guide the network matching the discrete subnet Normal forwarding of traffic, thereby effectively avoiding packet loss, non-optimal path transmission of traffic, and routing loops in network traffic that matches the separate subnet when the second-level subnet and its first-level subnet exist separately in the network And other issues.

Description

technical field [0001] The present application relates to the technical field of network communication, in particular to a method and device for generating a forwarding table. Background technique [0002] Under the background that IP (Internet Protocol, Internet Interconnection Protocol) resources are increasingly scarce and subnets are divided more finely, route aggregation emerges as the times require. such as in figure 1 In the application scenario shown, the first routing device splits the first-level subnet into a series of second-level subnets, and when advertising routes, the first routing device only publishes the routes of the above-mentioned first-level subnet to the second routing device Instead of publishing all the routing messages of the secondary subnets generated by the split, this behavior exhibited by the first routing device is called route aggregation. Applying routing aggregation to publish routing messages in the network can not only save routing dev...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/741H04L45/74
CPCH04L45/54H04L45/745
Inventor 王朝
Owner HANGZHOU DPTECH TECH
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