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A traffic switching method, device and system

A technology of traffic switching and measurement value, which is applied in the network field and can solve problems such as data loss

Active Publication Date: 2019-11-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a traffic switching method, device and system, which solves the problem of data loss caused by being routed to the gateway through equal-cost multipath when the ARP entry on the faulty gateway is incomplete, and can realize In the process of sending ARP entries, it does not affect other business functions of the gateway

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  • A traffic switching method, device and system
  • A traffic switching method, device and system
  • A traffic switching method, device and system

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Embodiment Construction

[0039] The technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Several terms are involved in the examples. For the meanings of terms involved in the embodiments, please refer to request for comments (RFC) 826 (ARP) and RFC2992 (ECMP).

[0040] The embodiment of the present invention provides a traffic switching method, device and system, which reduces the routing priority of the forwarding path by increasing the metric value of the forwarding path where the faulty gateway is located, avoiding traffic being routed to the faulty gateway throu...

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Abstract

The invention discloses a flow switching method, equipment and system. The method includes: the SDN controller obtains the first state of the target gateway; the target gateway belongs to an SDN gateway group, and multiple forwarding paths where multiple gateways in the SDN gateway group are located form the first network node and the second network node multiple equal-cost paths; the SDN controller sends an ARP entry to the target gateway according to the first state, and modifies the metric value of the forwarding path where the target gateway in the multiple equal-cost paths is from the original value to the first value, the first value is greater than the original value. The above solution lowers the routing priority of the forwarding path by increasing the metric value of the forwarding path where the faulty gateway is located, avoiding traffic being routed to the faulty gateway through equal-cost multipath, preventing data loss, and sending ARP entries. During the process, other business functions of the faulty gateway will not be affected.

Description

technical field [0001] The present invention relates to the field of network technology, in particular to a traffic switching method, device and system. Background technique [0002] Network overlay (Overlay) is the mainstream architecture model of Software Defined Network (SDN), which can realize the decoupling of network services from the underlying physical network devices, thereby creating a flexible virtual network. [0003] In order to improve the reliability of message transmission, network nodes in the Overlay architecture forward messages through multi-active gateways (multiple gateways sharing the same network address), and the forwarding paths of each gateway in the multi-active gateway form a network Equal-Cost Multi-Path (ECMP) between nodes. [0004] When a gateway in the all-active gateway restarts due to a fault, the SDN controller needs to send the ARP entries on the SDN controller to the faulty gateway in batches to ensure the consistency of the ARP entrie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/801H04L12/703H04L12/931H04L45/02H04L45/24H04L45/28H04L45/42H04L45/586H04L45/74
CPCH04L45/74H04L45/123H04L45/24H04L45/42H04L45/036H04L45/745H04L2101/622H04L45/02H04L61/103
Inventor 姚子阳董峰
Owner HUAWEI TECH CO LTD