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Method and device for clearing quick forwarding entry

A technology of forwarding table entries and forwarding tables, which is applied in the field of network communication and can solve problems such as message forwarding errors

Active Publication Date: 2017-05-10
HANGZHOU DPTECH TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in practical applications, since fast forwarding entries are generated based on routing information, when routing information changes, all fast forwarding entries related to the routing information also need to be updated. If the fast forwarding table is not updated in time Items are still forwarded according to the original fast forwarding table entries, which may cause some special application messages (such as some UDP protocol accounting messages) to hit the fast forwarding table that has not been updated in time and cause forwarding errors

Method used

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  • Method and device for clearing quick forwarding entry
  • Method and device for clearing quick forwarding entry
  • Method and device for clearing quick forwarding entry

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Embodiment Construction

[0019] 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.

[0020] 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 invention provides a method and a device for clearing a quick forwarding entry. The method and the device are applied to forwarding equipment, and the method comprises the steps of: matching the received message with the quick forwarding entry in a quick forwarding table; based on the information recorded in the matched quick forwarding entry, judging whether the routing information corresponding to the message is changed; and if the routing information corresponding to the message is changed, when a designated port is hit in the destination port of the message, clearing the quick forwarding entry corresponding to the message. By adopting the technical solution, when the forwarding equipment receives a message sent by an application corresponding to the designated port, if the routing information corresponding to the message is changed, the quick forwarding entry corresponding to the message is timely cleared, so that erroneous forwarding caused by the quick forwarding entry hit by the message but not timely updated is avoided.

Description

technical field [0001] The present application relates to the technical field of network communication, in particular to a method and device for clearing fast forwarding entries. Background technique [0002] In related technologies, in order to realize fast forwarding of packets, the forwarding device can send the packet received for the first time to the CPU, and the CPU searches for the routing information of the sent packet, and completes the forwarding based on the found routing information. Afterwards, usually the session information of the message and the routing information can be used to establish a fast forwarding entry. When the subsequent forwarding device receives a packet of the same session again, it can match the packet with the created fast forwarding entry, and then forward the packet based on the matched fast forwarding entry, without the need to The packets are sent to the CPU for table lookup and forwarding. A fast forwarding table is generated from th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/751H04L45/02
CPCH04L45/02H04L45/08
Inventor 刘志来费宝川康正丽
Owner HANGZHOU DPTECH TECH
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