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Message retransmission method and apparatus

A technology of message and maximum number of retransmissions, which is applied in the field of network communication, can solve problems such as frequent business interruptions, and achieve the effects of avoiding business interruptions, improving rationality, and improving stability

Active Publication Date: 2018-11-16
NEW H3C TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a message retransmission method and device to solve the problem of frequent business interruptions caused by the timeout time that the upper-layer application of the TCP protocol can tolerate in the existing message retransmission scheme is less than the longest sending time for sending a single message

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  • Message retransmission method and apparatus
  • Message retransmission method and apparatus
  • Message retransmission method and apparatus

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Embodiment Construction

[0055] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings For further detailed explanation.

[0056] See figure 1 , which is a schematic flowchart of a message retransmission method provided by an embodiment of the present invention, wherein the message retransmission method may include a first network device in a network between a first network device and a second network device, and the first network device A neighbor relationship based on a TCP connection is established between a network device and a second network device, such as a BGP neighbor or an LDP neighbor, such as figure 1 As shown, the message retransmissi...

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Abstract

The present invention provides a message retransmission method and apparatus. The method comprises: determining a retransmission timeout period RTO according to a first timeout period, wherein the first timeout period is the maximum time for which a first network device maintains the neighbor relationship in the case of not receiving a message sent by a second network device; and performing message retransmission for the second network device based on the RTO. The application of the embodiment of the invention can improve the service reliability.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a message retransmission method and device. Background technique [0002] One of the most important mechanisms in the reliability of the TCP (Transmission Control Protocol, Transmission Control Protocol) protocol is to handle data timeout and retransmission. A key parameter that affects the timeout retransmission mechanism of the TCP protocol is RTO (Retransmission Time Out, retransmission timeout time). After the sender sends the message, if the confirmation message is not received within the RTO, the message will be retransmitted until The packet retransmission is successful or the preset maximum number of retransmissions has been reached. [0003] Among them, the RTO of packet retransmission usually increases exponentially with the number of packet retransmissions. For example, assuming that the RTO of the first packet retransmission is 1, the RTO of subsequent ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
CPCH04L1/1848
Inventor 朱超鹏
Owner NEW H3C TECH CO LTD