CN101621722B - Method and system for automatically discovering node inner resource topology - Google Patents

Abstract

The present invention proposes a method and system for automatically discovering the internal resource topology of a node. The method includes steps: each sending optical port sends its optical port number and the address information of the single board where it is located to the receiving optical port of the opposite end through the connecting optical fiber; After receiving the optical port number of the sending optical port and the address information of the board where it is located, it forms an optical fiber connection message with the optical port number of the receiving optical port and the address information of the single board where it is located, and sends the optical fiber connection message to the main control unit board; the main control single board calculates and maintains the internal resource topology model of the node in real time according to the fiber connection message. This method can achieve the goal of automatically completing the node internal resource topology modeling efficiently and accurately.

Description

A method and system for automatically discovering node internal resource topology

technical field

The present invention relates to the field of optical networks, in particular to an optical fiber connection between different ports of different single boards inside a node in an Automatic Switched Optical Network (ASON for short) system based on WDM (Wavelength-division multiplexing, wavelength division multiplexing) Automatic discovery method and system.

Background technique

Optical network, such as OTN (Optical transmission network, optical transport network), WDM (Wavelength-division multiplexing, wavelength division multiplexing), SDH (Synchronous digital hierarchy, synchronous digital series) or SONET (Synchronous optical network, synchronous optical network) transmission network , has been widely used in the field of telecommunications.

Automatic switched optical network (ASON for short) refers to a new generation of optical network that completes the automatic switching function under the control of routing and signaling. It has been a research hotspot in the field of optical network in recent years. The introduction of ASON technology can enhance the rapid configuration capability of network services, improve service survivability, effectively resist network multi-point failures, and flexibly provide different service levels to meet the needs of the rapidly developing differentiated services. The ITU-T G.8080 and G.771X series recommendations proposed the concept and implementation framework of ASON.

While ASON network brings technical advantages, it also brings many problems. The rapid increase in the complexity of the ASON system has led to an increase in the complexity of the fiber connection relationship between different ports on different boards in the ASON system. However, manual configuration of fiber connections is prone to errors and takes time and effort.

Contents of the invention

The technical problem to be solved by the present invention is to propose a method and system for automatically discovering the topology of internal resources of a node, which replaces and upgrades the existing method of manually configuring optical fiber connections in the ASON system, thereby achieving efficient and accurate construction of the topology of internal resources of nodes. purpose of the model.

In order to solve the above technical problems, the present invention provides a method for automatically discovering the internal resource topology of a node, comprising steps:

Each sending optical port sends its optical port number and the address information of the board where it is located to the receiving optical port at the opposite end through the connecting optical fiber;

After the receiving optical port receives the optical port number of the sending optical port and the address information of the board where it is located, it forms an optical fiber connection message with the optical port number of the receiving optical port and the address information of the single board where it is located, and sends the optical fiber connection message to the master control board;

The main control single board calculates and maintains the internal resource topology model of the node in real time according to the fiber connection message.

Further, the above method can also have the following characteristics:

After the receiving optical port receives the optical port number of the sending optical port and the address information of the board where it is located, it also searches for the received optical port number of the sending optical port and its Whether all the address information of the boards on which it is located exists, and if they all exist, the fiber connection message is formed.

Further, the above method can also have the following characteristics:

When the receiving optical port finds the received optical port number of the sending optical port and the address information of the single board where it is located in the data structure of the configured actual plug-in board and its optical port, it also returns a success response to the sending optical port;

After the sending optical port receives the successful response, it searches for the data structure corresponding to the sending optical port in the data structure of the configured real plug-in board and its optical port, and sets the response identification position in it as the fetch indicating that the successful response is received. value.

Further, the above method can also have the following characteristics:

Timely traverse the data structure of each optical port, and judge the response identification bits of each sending optical port in turn. If the value indicates that a successful response has been received, continue to judge the next sending optical port; if the value indicates that a failed response or no After receiving the response, the sending optical port re-sends the message of its optical port number and the address of the single board where it is located to the receiving optical port at the opposite end through the connecting optical fiber.

Further, the above method can also have the following characteristics:

After receiving the optical fiber connection message, the main control board first judges the sending optical port number, receiving optical port number, and the board where the sending optical port is located in the optical fiber connection message according to the configured actual plug-in board and the data structure of the optical port. Whether the address and the address of the board where the receiving optical port is located exist, and if both exist, the internal resource topology model of the node is calculated.

In order to solve the above-mentioned technical problems, the present invention also provides a system for automatically discovering the internal resource topology of a node, which includes an optical port connection relationship acquisition module and a connection relationship statistical operation module, wherein:

The optical port connection relationship acquisition module controls each sending optical port to send its optical port number and the address information of the single board where it is located to the receiving optical port of the opposite end through the connecting optical fiber; and receives the optical port number of the sending optical port and its After the address information of the single board where it is located, the optical port number of the sending optical port and the address information of the single board where it is located, the optical port number of the receiving optical port and the address information of the single board where it is located compose an optical fiber connection message, and send the optical fiber connection message to the connecting Relational statistics operation module;

The connection relationship statistical operation module calculates and maintains the internal resource topology model of the node in real time according to the received fiber connection message.

Further, the above system can also have the following characteristics:

It also includes a plug-in board configuration module, which is used to configure the data structure of the plug-in board and its optical ports;

After the receiving optical port receives the optical port number of the sending optical port and the address information of the board where the optical port connection relationship acquisition module is located, it first judges according to the data structure of the real plug-in board and its optical ports in the plug-in board configuration module Whether the optical port number of the sending optical port and the address information of the single board where it is located exist, and if both exist, the optical fiber connection message is formed.

Further, the above system can also have the following characteristics:

When the optical port connection relationship acquisition module judges that the optical port number of the transmitting optical port received by the receiving optical port and the address information of the board where it is located exists, it controls the receiving optical port to return a successful response to the sending optical port, and controls the sending optical port to After receiving a successful response, set the response identification position in the data structure corresponding to the sending optical port in the plug-in board configuration module to a value indicating that a successful response is received.

Further, the above system can also have the following characteristics:

The optical port connection relationship acquisition module regularly traverses the data structure of each optical port in the real plug-in board configuration module, and judges in turn whether the value of the response identification bit of each sending optical port indicates that a successful response has been received, and if so, continue to judge the next step. Otherwise, control the sending optical port to resend the optical port number of the sending optical port and the address information of the single board where it is located to the receiving optical port at the opposite end through the connecting optical fiber.

Further, the above system can also have the following characteristics:

After receiving the optical fiber connection message, the connection relationship statistical operation module first judges the sending optical port number, receiving optical port number, sending optical port number and Whether the address of the single board where the port is located and the address of the single board where the receiving optical port is located, both exist, and if both exist, the internal resource topology model of the node is calculated.

A method and system for automatically discovering the internal resource topology of a node proposed by the present invention can automatically discover the actual optical fiber connection and then calculate the internal resources of the node when the actual insertion of the single board is completed, the configuration of the single board is completed, and the actual optical fiber connection is completed. Topology model, in order to achieve the purpose of efficiently and accurately completing the topology modeling of internal resources of nodes.

Description of drawings

Fig. 1 is a flow chart of a method for automatically discovering the internal resource topology of a node according to an embodiment of the present invention;

FIG. 2 is a block diagram of a system for automatically discovering the internal resource topology of a node according to an embodiment of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The embodiment of the present invention proposes a method for automatically discovering the internal resource topology of a node, as shown in Figure 1, including the following steps:

Step S101: Select a corresponding single board according to the requirements of the node;

One of the boards is the master SNP board, with ASON system software, which is used to summarize and calculate the connection relationship of optical ports inside the node; the other boards have single-board software, which is used to detect the connection relationship of optical ports and upload them to SNP veneer handling;

Step S102: According to the type and function of the node, use an optical fiber to connect each sending optical port with its corresponding receiving optical port;

The optical port of each board can be divided into receiving optical port and sending optical port according to the flow direction of the signal;

Step S103: Power on the system, start the ASON system software and each single board software, and configure the data structure of the actual plug-in single board and each optical port to the ASON system by the network management system;

The data structure of the single board includes the address of the single board, the type of the single board, and the number of optical ports; the data structure of the optical port includes the ID of the optical port, the sending and receiving direction of the optical port, and the board to which the optical port belongs.

The above steps S101 to S103 are the construction and configuration of the hardware environment, and then the detection process of the optical port connection relationship will be entered:

Step S104: the single board software controls each sending optical port to send a message carrying the optical port number of each sending optical port and the address of the single board where each sending optical port is located to the receiving optical port of the opposite end through the connecting optical fiber;

Step S105: The receiving optical port receives and analyzes the message carrying the sending optical port number and the address of the board where the sending optical port is sent from the sending optical port, and then judges the slave according to the data structure of the configured actual plug-in board and its optical port. Whether the sending optical port number and the single board address analyzed in the message exist, if the judgment result is "yes", then enter step S107; otherwise, enter step S106;

Step S106: The receiving optical port returns a failure response to the sending optical port. After receiving the failure response, the sending optical port records the record of the wrong connection relationship, and prompts the user to modify the configured actual plug-in board and the data structure of each optical port. Finish;

Step S107: The receiving optical port returns a successful response to the sending optical port, and at the same time, combines the parsed sending optical port number and the address of the board where the sending optical port is located with the optical port number of the receiving optical port and the address of the board where the receiving optical port is located Form a fiber connection message together, and then send the fiber connection message to the SNP main control single board through Ethernet;

Step S108: After receiving the successful response returned by the receiving optical port, the transmitting optical port sets the response identification position in the data structure corresponding to the transmitting optical port as a value indicating that a successful response is received;

The board software can have a retransmission mechanism, that is, it traverses the data structure of each optical port regularly, and judges in turn whether the value of the connection relationship identification bit of each sending optical port indicates that the connection relationship is confirmed to be correct. If the judgment result is "Yes", continue Determine the next optical port; otherwise, control the sending optical port to re-send a message carrying the optical port number of the sending optical port and the address of the single board where it is located to the receiving optical port at the opposite end through the connecting optical fiber;

Step S109: After the ASON system software of the SNP single board receives the fiber connection message from each single board, it parses the message, and judges the transmission data parsed from the message according to the configured actual plug-in board and the data structure of the optical port. Whether the optical port number, the receiving optical port number, the address of the single board where the sending optical port is located, and the address of the single board where the receiving optical port is located, if they all exist, go to step S110; otherwise, record the record that the connection relationship of the optical port is wrong, and prompt the user to modify the configuration The real plug-in board and the data structure of each optical port, end;

Step S110: the ASON system software of the SNP single board calculates and maintains the internal resource topology model of the node in real time according to the received fiber connection message.

In order to realize the above method, the present invention also proposes a system for automatically discovering the internal resource topology of a node, specifically as shown in Figure 2, which includes a real-plug single-board configuration module 21, an optical port connection relationship collection module 22, and a connection relationship statistical operation module 23, of which:

The plug-in board configuration module 21 configures the data structure of the plug-in board and its optical ports. The data structure of the single board includes the address of the single board, the type of the single board, and the number of optical ports; the data structure of the optical port includes the ID of the optical port, the sending and receiving direction of the optical port, and the board to which the optical port belongs.

The optical port connection relationship acquisition module 22 controls each sending optical port to send its optical port number and the address information of the single board where it is located to the receiving optical port of the opposite end through the connecting optical fiber; After the address information of the single board where it is located, the optical port number of the sending optical port and the address information of the single board where it is located, the optical port number of the receiving optical port and the address information of the single board where it is located form an optical fiber connection message, and the optical fiber connection message is sent to Connect the relationship statistical operation module.

Further, after the optical port connection relationship acquisition module 22 receives the optical port number of the sending optical port and the address information of the board where the receiving optical port is located, it first configures the real plug-in board and its optical ports in the module 21 according to the real plug-in board configuration module 21. The data structure of the port judges whether the optical port number of the sending optical port and the address information of the single board where it is located exist. If both exist, the optical fiber connection message is formed.

Further, when the optical port connection relationship acquisition module 22 judges that the optical port number of the transmitting optical port received by the receiving optical port and the address information of the single board where it is located exists, the receiving optical port is controlled to return a successful response to the transmitting optical port, and the control After the sending optical port receives a successful response, the response identification position in the data structure corresponding to the sending optical port in the plug-in board configuration module is a value indicating that a successful response is received.

Further, the optical port connection relationship acquisition module 22 regularly traverses the data structure of each optical port in the real plug-in single board configuration module, and judges whether the value of the response identification bit of each sending optical port indicates that a successful response is received, and if so, then Continue to judge the next optical port; otherwise, control the sending optical port to resend the optical port number of the sending optical port and the address information of the single board where it is located to the receiving optical port at the opposite end through the connecting optical fiber.

The connection relationship statistical operation module 23 calculates and maintains the node internal resource topology model in real time according to the received fiber connection message.

Further, after receiving the optical fiber connection message, the connection relationship statistical operation module 23 first judges the sending optical port number and receiving optical port number contained in the optical fiber connection message according to the data structure of the single board and the optical port in the real-inserted single board configuration module. Whether the slogan, the address of the single board where the sending optical port is located, and the address of the single board where the receiving optical port is located, all exist, and if they all exist, the internal resource topology model of the node is calculated.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes and All deformations should belong to the protection scope of the appended claims of the present invention.

Claims (6)

1. A method for automatically discovering the internal resource topology of a node, characterized in that it comprises steps: Each sending optical port sends its optical port number and the address information of the board where it is located to the receiving optical port at the opposite end through the connecting optical fiber; After the receiving optical port receives the optical port number of the sending optical port and the address information of the board where it is located, it also searches for the received optical port number of the sending optical port and its location in the data structure of the configured actual plug-in board and its optical port. Whether the address information of the single board exists, and if it exists, the optical port number of the sending optical port and the address information of the single board where it is located and the optical port number of the receiving optical port and the address information of the single board where it is located form an optical fiber connection message, and the The optical fiber connection message is sent to the main control board; the receiving optical port finds the received optical port number of the sending optical port and the address information of the board where it is located in the data structure of the configured actual plug-in board and its optical port , also returns a successful response to the sending optical port; after receiving the successful response, the sending optical port searches for the data structure corresponding to the sending optical port in the data structure of the configured actual plug-in board and its optical port, and sends the response The identification position is the value indicating that a successful response has been received; The main control single board calculates and maintains the internal resource topology model of the node in real time according to the fiber connection message. 2. The method of claim 1, wherein: Timely traverse the data structure of each optical port, and judge the response identification bits of each sending optical port in turn. If the value indicates that a successful response has been received, continue to judge the next sending optical port; if the value indicates that a failed response or no After receiving the response, the sending optical port re-sends the message of its optical port number and the address of the single board where it is located to the receiving optical port at the opposite end through the connecting optical fiber. 3. The method of claim 1, wherein: After receiving the optical fiber connection message, the main control board first judges the sending optical port number, receiving optical port number, and the board where the sending optical port is located in the optical fiber connection message according to the configured actual plug-in board and the data structure of the optical port. Whether the address and the address of the board where the receiving optical port is located exist, and if both exist, the internal resource topology model of the node is calculated. 4. A system for automatically discovering the internal resource topology of a node, characterized in that it includes a real plug-in single board configuration module, an optical port connection relationship acquisition module and a connection relationship statistical operation module, wherein: The real plug-in single board configuration module configures the real plug-in single board and the data structure of each optical port; The optical port connection relationship acquisition module controls each sending optical port to send its optical port number and the address information of the single board where it is located to the receiving optical port of the opposite end through the connecting optical fiber; and receives the optical port number of the sending optical port at the receiving optical port and the address information of the single board where it is located, first judge whether the optical port number of the sending optical port and the address information of the single board where it is located are all present according to the data structure of the real plug-in single board in the real plug-in single board configuration module and its optical ports, If both exist, the optical port number of the sending optical port and the address information of the single board where it is located and the optical port number of the receiving optical port and the address information of the single board where it is located compose an optical fiber connection message, and send the optical fiber connection message to the connection relationship statistics calculation Module; when it is still judged that the optical port number of the transmitting optical port received by the receiving optical port and the address information of the board where it is located exist, control the receiving optical port to return a successful response to the sending optical port, and control the sending optical port to receive a successful After the response, set the response identification position in the data structure corresponding to the sending optical port in the real plug-in single board configuration module as a value indicating that a successful response is received; The connection relationship statistical operation module calculates and maintains the node internal resource topology model in real time according to the received fiber connection message. 5. The system of claim 4, wherein: The optical port connection relationship acquisition module regularly traverses the data structure of each optical port in the real plug-in board configuration module, and judges in turn whether the value of the response identification bit of each sending optical port indicates that a successful response has been received, and if so, continue to judge the next step. Otherwise, control the sending optical port to resend the optical port number of the sending optical port and the address information of the single board where it is located to the receiving optical port at the opposite end through the connecting optical fiber. 6. The system of claim 4, wherein: After receiving the optical fiber connection message, the connection relationship statistical operation module first judges the sending optical port number, receiving optical port number, sending optical port number and Whether the address of the single board where the port is located and the address of the single board where the receiving optical port is located, both exist, and if both exist, the internal resource topology model of the node is calculated.

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