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Message transmission method and device

A message transmission and message technology, applied in the field of communications, can solve the problems of inability to encapsulate labels, limit the number of labels, and inability to forward messages, and achieve the effect of reducing the number of segment routing labels

Active Publication Date: 2019-06-11
北京华三通信技术有限公司
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Problems solved by technology

[0005] However, the number of labels encapsulated in the message is limited. For example, a maximum of 3 labels can be encapsulated in the message. Once the number of labels constituting the segment route of the standby path exceeds 3, the packet corresponding to the equipment path cannot be encapsulated in the message. All the labels, so that the packet cannot be forwarded correctly through the label

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Embodiment Construction

[0070] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, rather than limiting the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments and claims of this application are also intended to include plural forms, unless the context clearly indicates otherwise. As used herein, the term "and / or" is meant to include any and all possible combinations of one or more of the associated listed items.

[0071] It should be understood that although the embodiments of the present application may use terms such as first, second, and third to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the embodiments of the present application, first information may also be called second information, and simi...

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Abstract

The embodiment of the invention provides a message transmission method and device, and the method comprises the steps of obtaining a first message, and determining a forwarding entry corresponding tothe first message, wherein the forwarding table entries comprise a main path forwarding table entry and a standby path forwarding table entry, and an outbound interface included in the standby path forwarding table entry is a tunnel identifier of the TE tunnel; if the main path corresponding to the main path forwarding table entry fails and the second node is not the destination node correspondingto the destination address included in the first message, obtaining a segment routing label, pointing to the destination node, on the second node and a tunnel label corresponding to the TE tunnel from the standby path forwarding table entry; adding the segment routing label and the tunnel label in the first message to obtain a second message; and sending a second message to a second node throughthe TE tunnel corresponding to the tunnel identifier, so that the second node sends the second message to the destination node by using the segment routing label. Through the technical scheme providedby the embodiment of the invention, the message can be correctly forwarded through the standby path.

Description

technical field [0001] The embodiments of the present application relate to the field of communication technologies, and in particular, to a message transmission method and device. Background technique [0002] Segment routing (Segment Routing, SR) adopts the source path selection mechanism. The source node sets the Segment Identifier (Segment Identifier, SID) of the segment (Segment) to be forwarded by the source node in advance. The SID is represented by a label. When the message passes through the network node When , the network node forwards the message according to the label. [0003] At present, in order to ensure the reliability of transmission, a primary path and a backup path exist between the source node and the destination node. When the main path is normal, the packet is sent to the destination node through the main path. When the main path fails and the standby path does not fail, the packet is sent to the destination node through the standby path. [0004] S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/721H04L12/711H04L12/46H04L45/247
Inventor 叶金荣
Owner 北京华三通信技术有限公司
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