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Message generation method and device and message processing method and device

A message processing and message technology, applied in the field of communication, can solve the problems of over-long messages, limited number of SIDlists, data loss, etc.

Active Publication Date: 2021-07-20
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, at present, the number of SID lists carried in the messages exchanged between the controller and the head node is limited, and the transmission efficiency is low. When the number of SID lists exceeds the number of SID lists that can be carried in the message, the SID list may be truncated As a result, the data is lost or the message is too long to be reported, which leads to the failure of message transmission

Method used

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  • Message generation method and device and message processing method and device
  • Message generation method and device and message processing method and device
  • Message generation method and device and message processing method and device

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Embodiment Construction

[0057] see figure 1 , which is a schematic diagram of the format of the length-type-value (type-length-value, TLV) field carrying the SID list in the traditional message. The TLV field includes four sub TLV (sub TLV) fields (the four sub TLV fields are in figure 1 are distinguished by the depth of the color), where the type of the first sub TLV field is 1205, indicating that the sub TLV field is a sub TLV related to the SR Segment list; the type of the last three sub TLV fields is 1206, indicating that the sub TLV field The sub TLV field is the sub TLV related to the SR segment.

[0058] The first sub TLV field also includes a Length field, a Flags field, a Reserved field, a multi-topology identifier (MTID) field, an Algorithm field, and a Weight (Weight) field. field. The first sub TLV field occupies a total of 16 bytes. Wherein, the Flags field carries attribute information and / or status information of the Segment list, for example, whether the path corresponding to the ...

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Abstract

The embodiment of the invention discloses a message generation method and device and a message processing method and device. The method comprises: a first device obtaining a segment identifier list SID list, the SID list comprising a plurality of segment identifiers SID, the first N bits of the plurality of SID being the same, N being a positive integer; the first device generating a first message according to the SID list, the first message comprising a first part and a second part, the first part comprising the first Nbit of the plurality of SIDs, and the second part comprising the (N + 1)th bit to the 128th bit of each SID in the plurality of SIDs; and the first device sending the first message to a second device. According to the method, the number of SID lists capable of being carried in the message can be increased, and the transmission efficiency of the SID lists is improved.

Description

technical field [0001] The present application relates to the communication field, in particular to a message generation method, processing method and device. Background technique [0002] Internet Protocol version 6 (IPv6) Segment Routing (SegmentRouting IPv6, SRv6) is a protocol designed to forward IPv6 packets on the network based on the concept of source routing. The protocol defines a segment identification list (segment list, SID list) to represent a forwarding path. A SID list includes multiple segment identifiers (segment identifier, SID), and each SID represents a node or link on the forwarding path. The SID list of ordered SIDs can indicate the nodes or links passed successively on the forwarding path. [0003] In an SRv6 network, the controller can calculate the SID list and send the SID list to forwarding devices in the network. The forwarding device also needs to report the status or policy information of each SID in the SID list to the controller, so the mes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L45/50H04L45/74
CPCH04L69/06H04L69/22H04L45/50H04L45/74H04L45/34H04L45/04H04L45/72
Inventor 黎文岩王海波王丽丽
Owner HUAWEI TECH CO LTD