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A method and device for announcing prefix identifiers across interior gateway protocols

An internal gateway protocol and prefix identification technology, applied in the field of communication, to achieve the effect of improving stability and reliability

Active Publication Date: 2020-03-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems caused by cross-network devices referencing prefix identifiers across IGP domains, and ensure that prefix identifiers can use SR path calculation on the first network and second network related to cross-network devices, and there will be no failure scenarios that cause slow service recovery issues, improved stability and reliability

Method used

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  • A method and device for announcing prefix identifiers across interior gateway protocols
  • A method and device for announcing prefix identifiers across interior gateway protocols
  • A method and device for announcing prefix identifiers across interior gateway protocols

Examples

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Embodiment Construction

[0033] Embodiments of the present application are described below in conjunction with the accompanying drawings.

[0034] An embodiment of the present application provides a method for announcing a prefix identifier across an interior gateway protocol, which is used to implement the advertisement of a prefix identifier across network devices.

[0035] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and not necessarily Used to describe a specific sequence or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method...

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Abstract

The embodiment of the present application discloses a method and device for announcing a prefix identifier across an interior gateway protocol, which are used to implement the advertisement of a prefix identifier across network devices. For the cross-network device that crosses the interior gateway protocol, the cross-network device respectively accesses the first network using the first protocol and the second network using the second protocol. The first protocol and the second protocol are different interior gateway protocols. The local loopback interface of the cross-network device enables the first protocol and the second protocol, so the cross-network device can notify the devices in the first network of the prefix identifier of the cross-network device according to the first protocol, and can also notify the A device in the second network advertises the prefix identification of the device across the network. Solve the problems caused by cross-network devices referencing prefix identifiers across IGP domains, and ensure that prefix identifiers can use SR path calculation in the first network and second network related to cross-network devices, and there will be no failure scenarios that cause slow service recovery issues, improved stability and reliability.

Description

technical field [0001] The application relates to the field of communication, in particular to the announcement of the prefix identification across interior gateway protocols in segment routing. Background technique [0002] The segment routing (Segment Routing, SR) protocol is a source routing protocol. The source node specifies the path for the application message, and converts the path into an ordered Segment list and encapsulates it in the message header. The intermediate node of the path It only needs to be forwarded according to the path specified in the packet header. Segment-style commands for devices to process packets, such as forwarding packets to destinations according to the shortest path, forwarding packets through specified interfaces, forwarding packets to specified application / service instances, etc. The SR protocol can simplify the network and has good scalability, so it has become a very promising technology at present. [0003] In the SR scheme, a prefi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/721H04L12/745H04L12/751H04L45/02H04L45/748
CPCH04L45/52
Inventor 王九明朱永庆陈华南
Owner HUAWEI TECH CO LTD
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