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Method and device for implementing LSP protection by IP RAN equipment

A technology for equipment and protection switching, applied in the direction of digital transmission systems, electrical components, transmission systems, etc., can solve problems such as long switching time, service interruption, and service interruption, and achieve the effect of reducing service interruption time

Active Publication Date: 2019-03-29
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is that in the existing IP RAN equipment, the switching time of the LSP1:1 protection mode is long, and the problem of service interruption or service interruption is prone to occur

Method used

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  • Method and device for implementing LSP protection by IP RAN equipment
  • Method and device for implementing LSP protection by IP RAN equipment
  • Method and device for implementing LSP protection by IP RAN equipment

Examples

Experimental program
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specific Embodiment 1

[0053] figure 1 It is a basic structural block diagram of the IP RAN device with the device for realizing LSP protection provided by the present invention, including a main control plane and a forwarding plane, and the communication and Send the configuration.

[0054] The main control plane is responsible for generating sufficiently separated LSP protection groups, and ensuring that the number of LSPs in the protection group is <= 2; at the same time, when both the active and standby LSPs fail, an escape path is generated.

[0055] The main control plane sends the above configuration to the SPM module (service processing module) in the forwarding plane, and the SPM module invokes the corresponding driver module to implement corresponding functions, such as performing protection switching operations or service recovery.

[0056] like figure 1 As shown, the main control plane has:

[0057] Command-Line Interface (CLI): Used to input related commands.

[0058] Local service ...

specific Embodiment 2

[0074] On the basis of the above-mentioned LSP protection device, the present invention also provides a method for IP RAN equipment to realize LSP protection,

[0075] Using two hardware entries on the service processing module to store the main LSP and the standby LSP respectively, and according to the working state of the service processing module, obtain and calculate the two parameters of the hardware state and the switching flag of the service processing module;

[0076] The automatic protection switching module uses the hardware status of the service processing module and the switching flag as the basis for performing the switching of the active LSP and the standby LSP or the basis for service recovery, and calls the switching driver module to perform corresponding protection switching or service recovery operations.

[0077] like figure 2 As shown, the above method specifically includes the following steps:

[0078] Step S10: When a link failure or link recovery occur...

specific Embodiment 3

[0131] In the solution of the present invention, when performing protection switching and service recovery operations of the active LSP and the standby LSP, the processing flow of the forwarding application layer is as follows:

[0132] For protection switching:

[0133] (1) After receiving the update operation of the LSP protection group, keep the ID of the FRR group unchanged (FRR, Fast Reroute, fast rerouting).

[0134] (2) Obtain the switching state of the FRR group at this time from the switching drive module, and the switching state is Figure 3-Figure 8 The hardware status in , indicates whether the first or second entry of the hardware entry is used by the service at this time. Note: at this time, the first entry of the hardware entry may be the primary LSP or the backup LSP, and the corresponding second entry may also be It will be the standby LSP or the main LSP, and obtain the working LSP path information (LSP key value) according to the switching status of the FRR...

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Abstract

The invention discloses a method and device for implementing LSP protection by IP RAN equipment. The method comprises the following steps: respectively saving a host LSP and a standby LSP by utilizingtwo hardware table entries, according to the working states of a service processing module and a switching driving module, acquiring the hardware state of the switching driving module, and calculating two parameters of switching marks of the service processing module; and using the two parameters of the hardware state and the switching marks as a basis for executing the host LSP and the standby LSP protection switching or a basis of service recovery by an automatic protection switching module, and executing a corresponding protection switching or service recovery operation. According to the method for implementing the LSP protection by the IP RAN equipment provided by the invention, due to the participation of the two parameters of the hardware state and the switching marks, when LSP protection group configuration is issued, an operation of frequently refreshing the hardware table items is avoided, and when the host LSP breaks down, the host LSP can be switched to the standby LSP within 50ms, thus the service transient interruption time is shortened or the phenomenon of service interruption is avoided.

Description

technical field [0001] The invention relates to the technical field of IP RAN, in particular to a method and device for IP RAN equipment to realize LSP protection, which are used for ensuring normal operation of services when an LSP link failure occurs in the IP RAN equipment. Background technique [0002] With the development of 4G network and mobile communication technology, more and more users have greatly increased their demand for mobile data. Therefore, integrated services have become the mainstream development direction of mobile operators. In addition to providing high-quality GSM voice services , It also needs to provide data services including Internet access, video services, leased lines, private networks, cloud applications, and video services. [0003] The massive increase of data services has put forward higher requirements on the bandwidth and reliability of mobile networks, which cannot be met by traditional transport networks such as TDM. Therefore, buildin...

Claims

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Application Information

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IPC IPC(8): H04L12/24
CPCH04L41/0663
Inventor 刘俊邓凯
Owner FENGHUO COMM SCI & TECH CO LTD
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