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Three-layer data traffic smooth switching method of MLAG interface fault

A technology of smooth switching and layer data, applied in the field of data communication, to achieve the effect of ensuring communication capability, reducing packet loss rate, and avoiding route shock

Active Publication Date: 2018-07-27
NO 32 RES INST OF CHINA ELECTRONICS TECH GRP
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the MLAG interface, a backup routing mechanism is provided to ensure that the data packets routed and forwarded through the MLAG interface of the Switch device can be forwarded normally when the MLAG interface communication fails and recovers, and the data packet loss problem caused by the MLAG interface communication failure is solved to the greatest extent.

Method used

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  • Three-layer data traffic smooth switching method of MLAG interface fault
  • Three-layer data traffic smooth switching method of MLAG interface fault
  • Three-layer data traffic smooth switching method of MLAG interface fault

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Embodiment Construction

[0048] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0049] A method for smooth switching of three-layer data traffic of a MLAG interface failure of the present invention, based on the FIB entry whose outgoing interface is the MLAG interface of the Switch device, dynamically generates a backup FIB entry whose outgoing interface is the peer-link interface, when the MLAG interface When a communication failure occurs, the data packets routed and forwarded by the MLAG interface can be quickly switched to the outbound interface as the peer-link interface for da...

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Abstract

The invention provides a three-layer data traffic smooth switching method of an MLAG interface fault. The method comprises the following steps: an outbound interface based on a Switch device dynamically generates a backup FIB table entry in which the outbound interface is a peer-link interface for the FIB table entry of an MLAG interface, when a communication fault occurs in the MLAG interface, the outbound interface can be quickly switched to the peer-link interface through a data message forwarded by the MLAG interface to perform data message forwarding and to quickly update the FIB table entry so as to ensure that the data message forwarding is not affected. According to the three-layer data traffic smooth switching method, the packet loss rate of the Switch device to which a faulty MLAG member port belongs is reduced by using a backup routing mode; the communication capability between the Network side and the CE side is ensured by the backup routing mode; and the routing oscillation caused by the shutdown fault of the MLAG uplink port is avoided by the backup routing mode.

Description

technical field [0001] The invention relates to the technical field of cross-device link aggregation of a network switch in the field of data communication, and in particular to a method for quickly switching a backup route of an MLAG system when a communication failure occurs on an MLAG interface as a layer-3 interface. Background technique [0002] MLAG (Multichassis Link Aggregation Group), a cross-device link aggregation group, is a mechanism for realizing cross-device link aggregation. reliability. [0003] attached figure 1 Among them, the MLAG system is composed of three layer-3 switch devices, and the three devices are: SwitchA, SwitchB and CE. SwitchA and SwitchB are two access devices, and CE is the connected device. The basic idea of ​​the MLAG technology is to allow SwitchA and SwitchB to perform link aggregation negotiation with the connected CE device in the same state. link aggregation relationship. In order to ensure that the two access devices SwitchA a...

Claims

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Application Information

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IPC IPC(8): H04L12/707H04L12/703H04L12/709H04L45/24H04L45/243H04L45/28
CPCH04L45/22H04L45/245H04L45/28
Inventor 鲜大勇
Owner NO 32 RES INST OF CHINA ELECTRONICS TECH GRP
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