A method and device for implementing LSP protection by an ip RAN device

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

Active Publication Date: 2021-12-14
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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  • A method and device for implementing LSP protection by an ip RAN device
  • A method and device for implementing LSP protection by an ip RAN device
  • A method and device for implementing LSP protection by an ip RAN device

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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] Such as figure 1 As shown, the main control plane has:

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

[0058] Local servi...

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] Such as figure 2 As shown, the above method specifically includes the following steps:

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

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 realizing LSP protection of an IP RAN device. The method includes the following steps: using two hardware entries to respectively store a main LSP and a backup LSP, and according to the working status of a service processing module and a switching drive module, Obtain the hardware state of the switching drive module, and calculate the two parameters of the switching flag of the service processing module; the automatic protection switching module uses the two parameters of the hardware state and the switching flag as the basis for performing the protection switching of the active LSP and the standby LSP or service recovery According to the basis, perform corresponding protection switching or service recovery operations. In the present invention, due to the participation of the two parameters of the hardware state and the switching flag, when the LSP protection group configuration is issued, there will be no frequent operations of refreshing the hardware table items, and when the active LSP fails, it can be switched to within 50ms. On the standby LSP, the service interruption time is reduced or no service interruption occurs.

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