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Node, network controller and related methods for routing data packets in a network

A network controller, data packet technology, applied in the field of network communication

Active Publication Date: 2019-12-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although existing systems, devices, and methods involving source routing meet the requirements to a certain extent, there is still room for improvement, especially in addressing issues related to routing packets in transit

Method used

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  • Node, network controller and related methods for routing data packets in a network
  • Node, network controller and related methods for routing data packets in a network
  • Node, network controller and related methods for routing data packets in a network

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Embodiment Construction

[0024] As packets travel through the network, some network control scenarios involve rerouting the flow of packets in the network. This practice of changing the source route of a flow is often referred to as rerouting. Changing the source routing of a flow is known to cause communication errors in certain situations. For example, packet reordering occurs if the transit delay of the new source route is less than that of the original source route.

[0025] This document describes methods and systems in which, in related contexts, rather than automatically rerouting flows after a rerouting command occurs, the flow is monitored from the time the last packet was sent until the next packet is sent. Elapsed time period. Subsequent packets are routed along the new source route only when it is determined that the monitored time period has reached a given threshold. The given threshold may be selected as a function of the difference in transmission delay between two source routes, op...

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Abstract

A node for routing data packets in a flow is disclosed, generally, the node includes a receiver for receiving a command to reroute the flow from a first source route to a second source route. The node also includes a processor configured to determine that a time period between successive first and second packets of the flow exceeds a threshold; and a transmitter configured to, in response to the determination, The second data packet is sent on a source route. Alternatively, determining the time period between successive first and second packets of the flow may be performed by a network controller, which may instruct a given node to send only the second and subsequent The flow is rerouted in such a manner that packets are routed along the second source route.

Description

[0001] cross reference [0002] This application claims priority to U.S. Patent Application No. 14 / 610,608, filed January 30, 2015, entitled "A Node, Network Controller, and Related Methods for Routing Data Packets in a Network," which states The entire content of the application is hereby incorporated by reference. technical field [0003] The improvement generally relates to the field of network communication, and more particularly to a system, device and method for source routing data packets in a network. Background technique [0004] In the field of communication networks, a network comprises a number of interconnected nodes for sending, forwarding and / or receiving information, usually divided into multiple data packets. To enable communication between these nodes, communication protocols have been established by, for example, the International Organization for Standardization (ISO). In these communication protocols, source routing is used to sequentially forward mult...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L45/24H04L45/42H04L45/50
CPCH04L45/22H04L47/283H04L41/083H04L43/026H04L45/72H04L45/50H04L43/0852H04L43/16H04L41/342H04L43/20
Inventor 彼得·艾斯伍德-史密斯
Owner HUAWEI TECH CO LTD
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