Data flow routing method and device

A data flow and routing technology, applied in data exchange network, data exchange through path configuration, digital transmission system, etc., can solve problems such as packet loss and data flow link congestion

Active Publication Date: 2019-05-24
NEW H3C TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] However, if the link between Spine 1 and Leaf 2 is only congested but not faulty, Leaf 1 still uses Spine 1 as the next-hop device when sending data flow to Leaf 2, which may cause the data flow to be transmitted by Spine1. Packet loss occurs due to link congestion during forwarding to Leaf 2

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Embodiment Construction

[0067] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0068] In the spine-leaf network based on VXLAN technology, the leaf device can be used as the VTEP device in the VXLAN network. Any leaf device in the spine-leaf network can receive the data stream sent by the servers connected to it. And forward these data streams to other Leaf devices through the corresponding Spine device in the Spine-Leaf networking according to actual needs (that is, to the server connected to the corresponding Leaf device). In some appl...

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Abstract

The embodiment of the invention provides a data flow routing method and device. The method comprises the steps of receiving a congestion notification message sent by a first Spine device, sending thecongestion notification message when the first Spine device detects that an outlet port forwarding a target data flow is congested, and the congestion notification message carries a flow identifier ofthe target data flow, an outer-layer target IP address and a rate; sending a bandwidth query message carrying the outer-layer destination IP address to each second Spine device, so that each second Spine device determines the residual bandwidth of an output port corresponding to the outer-layer destination IP address, carries the residual bandwidth in a bandwidth notification message and sends the bandwidth notification message to the first Leaf device; and receiving a bandwidth notification message sent by each second Spine device, and determining one second Spine device of which the residual bandwidth is greater than the rate of the target data flow as a next hop device for sending the target data flow. The possibility of data flow packet loss caused by congestion of the data flow can be reduced.

Description

technical field [0001] The invention relates to the technical field of congestion notification and load balancing, in particular to a data flow routing method and device. Background technique [0002] VXLAN (Virtual eXtensible Local Area Network) can provide Layer 2 interconnection for distributed physical servers based on the existing service provider or enterprise IP (Internet Protocol, network protocol) network, and can provide different tenants Provides business isolation. The VXLAN technology uses the existing layer-3 physical network as the underlay network, and builds a virtual layer-2 network, namely the overlay network, on it. Overlay uses encapsulation technology to establish VXLAN tunnels between tenant servers. Using the Layer 3 forwarding path provided by the Underlay network, tenant Layer 2 packets can be transmitted across the Layer 3 network and between different servers. [0003] Spine-Leaf (spine-leaf) networking is a common networking solution using VXL...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L12/741H04L12/801H04L45/74
Inventor 蒋茂勇
Owner NEW H3C TECH CO LTD
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