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Service transmission method and system when lsp changes in mpls network

A business transmission and business technology, applied in transmission systems, electrical components, etc., can solve problems such as business packet loss and increasing number of lost packets, and achieve the effects of ensuring work performance, shortening the management process, and reducing the probability of business packet loss

Active Publication Date: 2022-01-04
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, because the service configurations are issued sequentially in a serial manner (i.e., the configurations are delivered sequentially), it will take a certain process to deliver the service configurations of the outgoing port path changes to PW1_1 to PW1_n in sequence; During the process, all services that need to be transmitted will lose packets, and the number of lost packets will increase linearly

Method used

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  • Service transmission method and system when lsp changes in mpls network
  • Service transmission method and system when lsp changes in mpls network

Examples

Experimental program
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Effect test

Embodiment 1

[0039] The judging condition of needing to cut off the service transmission in S1 is: MPLS node detects that the outgoing port of LSP changes; Its reason is: if create and use the auxiliary path of outgoing port for a long time and can occupy the memory of MPLS node, and the present invention immediately (in monitoring LSP When the outbound port changes), the outbound auxiliary path can be created, which can minimize the existence time of the outbound auxiliary path on the basis of using the outbound auxiliary path to transmit services, thereby minimizing the impact on MPLS nodes and ensuring MPLS nodes work performance.

Embodiment 2

[0041] On the basis of Embodiment 1, the outbound port auxiliary path is created and deleted through the corresponding driver of MPLS (hereinafter referred to as management), and the driver will not be perceived by the upper layer software when managing the outbound port auxiliary path; When the path is sensed by the upper-layer software, the management operation can only be performed after the upper-layer software agrees, which will extend the management process of the port-assisted path. Since the auxiliary path of the outgoing port is created immediately in this embodiment, it is necessary to ensure that the creation time of the auxiliary path of the outgoing port is as short as possible (the shorter the time, the less business packet loss); on the basis that the auxiliary path of the outgoing port will be deleted at last , the upper-layer software will not perceive the auxiliary path of the outgoing port when managing the auxiliary path of the outgoing port, which not only ...

Embodiment 3

[0043] Since there is a lot of information about the outbound port path, when managing (such as creating, deleting, etc.) the outbound port path, the information about the port path will be retrieved through a KEY (key value). Each KEY must be unique. On this basis, the process for MPLS nodes in S1 to create an auxiliary egress path includes: the MPLS node generates a unique KEY, creates an auxiliary egress path according to the service configuration information of the egress path that is normally Associated with the generated KEY.

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Abstract

The invention discloses a service transmission method and system when an LSP changes in an MPLS network, and relates to the field of service transmission in the MPLS network. The steps of the method are as follows: S1: before the service transmission needs to be cut off, the MPLS node creates an outbound auxiliary path, and the service configuration information of the outbound auxiliary path is the same as the outbound path for normal transmission of the service; the service is switched to the outbound auxiliary path path for transmission; S2: After the MPLS node cuts off the service transmission, create a new egress path, and update the service on the egress auxiliary path to the newly created egress path for transmission; S3: delete the egress auxiliary path. The present invention will not interrupt service transmission all the time before and after the LSP is changed, thereby significantly reducing the probability of service packet loss, and is very suitable for popularization.

Description

technical field [0001] The invention relates to the field of service transmission in the MPLS network, in particular to a service transmission method and system when an LSP changes in the MPLS network. Background technique [0002] In the MPLS (Multi-Protocol Label Switching, Multi-Protocol Label Switching) network model, LSP (Label Switching Path, Label Switching Path) is a relatively independent service model, and LSP can be understood as carrying the second and third layers of MPLS VPN (Virtual Private Network, virtual private network) service transmission tunnel. [0003] LSPs are often dynamically generated by a distribution protocol, such as LDP (Label Distribution Protocol, Label Distribution Protocol). The distribution protocol will regenerate the LSP according to the topology change in the network, which will cause changes in the outgoing ports of the node devices in the LSP. When the egress port of the node device changes, the node device needs to be updated: cut ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L47/70H04L47/32H04L45/50
CPCH04L47/32H04L47/825
Inventor 申智勇
Owner FENGHUO COMM SCI & TECH CO LTD