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A method and device for publishing routes

A technology for routing and issuing commands, which is applied in the field of communication and can solve problems such as service interruption and traffic cannot be forwarded

Active Publication Date: 2019-10-11
HANGZHOU DPTECH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method and device for issuing routes to solve the problem that traffic cannot be forwarded when a device fails in the prior art, resulting in service interruption

Method used

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  • A method and device for publishing routes
  • A method and device for publishing routes
  • A method and device for publishing routes

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Embodiment Construction

[0020] 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.

[0021] Aiming at the problems existing in the prior art, a method for publishing routes is proposed in the embodiment of the present invention, see figure 2 , is a schematic diagram of an application scenario of an embodiment of the present invention. The method can be applied to an MPLS network including a source CE device, a target CE device, a first PE device, a second PE device, and a third PE device. The source CE device and the first PE device The PE device establishes an EBGP connection, the target CE device establishes...

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Abstract

The present invention provides a method and device for publishing routes, including: using the first routing attribute information to generate first routing information, and publishing the first routing information to the first PE device through a routing protocol; the first routing information includes destination network segment, First priority, next hop information; the first priority is greater than the second priority of the second routing information issued by the second PE device to the first PE device, so that the first PE device is between itself and the third PE device When there is no fault between the two, use the first route generated based on the first routing information to send the traffic of the destination network segment; when a fault occurs between itself and the third PE device, use the second route generated based on the second routing information to send the destination network segment network segment traffic. In the embodiment of the present invention, since the first PE device and the third PE device fail, the traffic can be sent to the target CE device, thus ensuring that the traffic is not interrupted and the problem of service interruption is avoided.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a method and device for publishing routes. Background technique [0002] MPLS L3VPN (Multi-Protocol Label Switching Layer 3 Virtual Private Network) is a L3VPN technology that uses BGP (Border Gateway Protocol) to advertise routes on the service provider backbone network. [0003] Such as figure 1 As shown, it is a network diagram of MPLS L3VPN, which consists of three parts: CE (Customer Edge, user edge) equipment, PE (Provider Edge, service provider edge) equipment, and P (Provider, service provider) equipment. The CE device has an interface directly connected to the PE, and the CE device establishes an EBGP (External BGP, External Border Gateway Protocol) neighbor relationship with the PE device. The PE device is the edge device of the service provider network, and the IBGP (InternalBGP, Internal Border Gateway Protocol) neighbor relationship is established be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/703H04L12/725H04L45/28
CPCH04L45/28H04L45/302
Inventor 王富涛
Owner HANGZHOU DPTECH TECH
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