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Segment routing extension message forwarding method

A technology of extending messages and message forwarding, which is applied in the field of computer networks, can solve the problems that IPv4 networks cannot realize network messages, and achieve the effect of reducing difficulty

Pending Publication Date: 2022-02-15
NAT UNIV OF DEFENSE TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0007] The technical problem to be solved in the present invention is based on the idea of ​​routing and forwarding of network message segments, designing an IPv4-oriented segment routing extended message forwarding method to solve the problem in the existing IPv4 network The problem of inability to flexibly configure the network stream transmission path due to the inability to realize segment routing forwarding of network packets

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Embodiment Construction

[0110] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0111] Such as figure 1 Shown, the present invention comprises the following steps:

[0112] The first step is to design an IPv4-oriented segment routing extension header by:

[0113] 1.1 Design IPv4-oriented segment routing extension header SRHv4, as shown in Table 1. SRHv4 consists of 9 fields: Next Header, Hdr Ext Len, Routing Type, Seg Left, Last Entry, Flags, Tag, Segment List[n], and Optional TLV;

[0114] The length and meaning of each field in the table are as follows:

[0115] Next Header: The length of the field is 8 bits, indicating the type of the inner layer packet encapsulated by the SRHv4 packet header. If NextHeader is 4, it indicates that the inner packet type is IPv4; if Next Header is 41, it indicates that the inner layer packet type is IPv6.

[0116] Segment List[m]: The length of the field is 32 bits, which identifies ...

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Abstract

The invention discloses a segment routing extension message forwarding method, and aims to solve the problem that a network flow transmission path cannot be flexibly configured due to the fact that segment routing forwarding of network messages cannot be achieved in an existing IPv4 network. According to the technical scheme, the method comprises the following steps: designing an IPv4-oriented segment routing extension message header SRHv4, recording IPv4 network segment routing information in the SRHv4, constructing an IPv4 segment routing forwarding system consisting of a gateway node and N message forwarding nodes, constructing the SRHv4 at the gateway node and packaging a network message, and analyzing the SRHv4 of the network message at the forwarding node, and completing forwarding of the IPv4 segment routing extension message according to the segment routing SID in the SRHv4. According to the invention, the IPv4 message can be forwarded according to the configured path, and a user can flexibly configure the transmission path of the network flow according to requirements, so that the difficulty of network operation and maintenance is reduced, and many network functions can be realized.

Description

technical field [0001] The invention belongs to the technical field of computer networks, and in particular relates to an IPv4-oriented segment routing forwarding method. Background technique [0002] With the development and application of technologies such as cloud computing and the Internet of Things, the demand for ultra-large bandwidth and large-scale device connections have brought great challenges to traditional IP network operations. IPv6-based segment routing technology (SRv6, Segment Routing forIPv6) supports flexible calculation and path implementation, and greatly simplifies network configuration, allowing users to easily control the transmission path of network flows. and other technical fields have broad application prospects. [0003] However, the SRv6 technology is not compatible with the IPv4 protocol, and can only be applied to the IPv6 network, but not to the IPv4 network. Although most current networks support IPv6, there are still IPv4 networks that do...

Claims

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Application Information

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IPC IPC(8): H04L45/74H04L69/22H04L61/5007
CPCH04L45/74H04L45/54H04L69/22
Inventor 原玉磊王宝生赵宝康赵锋彭伟时向泉
Owner NAT UNIV OF DEFENSE TECH
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