CN101908923B - Overall self-detecting system and method - Google Patents
Overall self-detecting system and method Download PDFInfo
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Abstract
The invention discloses an overall self-detecting system. In the system, a cross processing unit is used for performing cross loop-back of a space division/time division mode in a traversal mode under the control of a main control unit; and a branch processing unit is used for performing connectivity test on a loop-back link between the branch processing unit and the cross processing unit and a cross loop-back link in the cross processing unit under the control of the main control unit. The invention also discloses an overall self-detecting method. The method comprises the following steps of: performing cross loop-back of the space division/time division mode in the traversal mode by the cross processing unit under the control of the main control unit, and performing connectivity test on the loop-back link between the branch processing unit and the cross processing unit and the cross loop-back link in the cross processing unit through cooperative test of the cross processing unit and the branch processing unit so as to realize self-detecting. The system and the method can improve the reliability, accuracy and efficiency of the test and reduce the cost of the test.
Description
Technical Field
The invention relates to a self-detection technology, in particular to a system and a method for self-detecting the whole state of synchronous digital transmission hierarchy (SDH) equipment.
Background
SDH devices are generally composed of various line units that perform different functions, including a power supply unit, a control unit, a traffic high-low order cross unit, an overhead processing unit, various types of outgoing line units, a clock unit, and the like. The components can be collectively called as SDH network elements, and after the SDH network elements are processed by a production line, the SDH network elements can be delivered out of a factory after being qualified through a series of tests of functions, performances and the like.
The existing method for testing the SDH network element generally performs networking test according to actual application, and as shown in fig. 1, a network management control console, an SDH test instrument, and the like must be provided, and a tester first uses the network management control console to manually configure data, then issues the configured data to the SDH network element, and waits for the SDH network element to return an execution result for the configured data under the coordination test of the SDH test instrument, and finally, the tester judges the working condition of the SDH network element by observing the service condition.
Obviously, with the existing testing method, the control of the test is manually controlled, having the disadvantages of: in order to complete the test of the SDH network element, more additional resources, such as a network management console, an SDH test instrument and the like, must be equipped; different types of SDH network elements need to be tested by different types of SDH test instruments respectively, and because the SDH equipment is composed of different types of SDH network elements, the whole condition of the SDH equipment cannot be tested, the test completeness is insufficient, and the full coverage test is difficult to achieve; the test is time-consuming, labor-consuming and low in efficiency; for faults in the test, the positioning speed completely depends on the service quality of testers monitoring the network management console, and the operation is not facilitated. The above disadvantages are particularly obvious when SDH network elements are produced in large scale and shipped in a centralized manner, and are problems that may exist in each SDH network element, such as the failure to find, locate, and maintain quickly, and the like, and a bottleneck of shipment guarantee. In summary, in the prior art, the whole testing process needs to be manually controlled by the tester monitoring the gateway console; and the test instrument is also required to work cooperatively to test each SDH network element in the SDH equipment respectively, so that the reliability and accuracy of the test are low, the test efficiency is low, and the test cost is high.
Disclosure of Invention
In view of this, the main objective of the present invention is to provide a complete machine self-detection system and method, which can automatically and cooperatively test each SDH network element in an SDH device, thereby improving the reliability and accuracy of the test, improving the efficiency of the test, reducing the cost of the test, and saving resources.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a complete machine self-detection system comprises: the system comprises a main control unit, a cross processing unit and a branch processing unit; wherein,
the main control unit is used for controlling the cooperative test of the cross processing unit and the branch processing unit to realize self-detection;
the cross processing unit comprises a space division cross module for performing space division mode cross loopback and a time division cross module for performing time division mode cross loopback; the cross processing unit is used for crossing a current space division port connected with the branch processing unit in the space division cross module to a first path of the time division cross module from the space division cross module under the control of the main control unit, and looping back at a time division port of the first path until the traversal of the cross loopback of all time division ports corresponding to the current space division port is completed; at the next space division port, continuously executing the traversal of the cross loopback on all the time division ports corresponding to the next space division port until the traversal of the cross loopback on all the time division ports corresponding to all the space division ports is completed;
and the branch processing unit is used for performing connectivity test on a loopback link between the branch processing unit and the cross processing unit and a loopback link inside the cross processing unit under the control of the main control unit.
The branch processing unit is further configured to receive a connectivity test command issued by the main control unit, generate a unique character string for the looped link, and write the unique character string into the sending end; and reading the character string from the receiving end corresponding to the sending end, extracting the written character string, matching the character string with the read character string, and reporting the matching result to the main control unit.
The branch processing unit is further configured to receive a connectivity test command issued by the main control unit, generate a unique character string for the cross looped link, and write the unique character string into the sending end; and reading the character string from the receiving end corresponding to the sending end, extracting the written character string, matching the character string with the read character string, and reporting the matching result to the main control unit.
Wherein, this system still includes: the optical line processing unit is used for looping back towards the direction of the cross processing unit under the control of the main control unit and looping back at an optical port on the inner side of the optical line processing unit;
the main control unit is further configured to control the optical line processing unit, the cross processing unit, and the branch processing unit to perform cooperative testing, so as to implement self-detection.
The branch processing unit is further configured to select two time division ports with normal connectivity in the time division cross module to perform bidirectional cross, cross one of the time division ports to a current space division port in the space division cross module connected to the branch processing unit, cross the other time division port to a current space division port in the space division cross module connected to the optical line processing unit, and perform the connectivity detection; in a normal connectivity state, the branch processing unit is further configured to continue to select two normal-connectivity time division ports in the time division cross module to perform the bidirectional cross until traversal and connectivity detection of all space division ports in the space division cross module connected to the optical line processing unit are completed; or,
in the state of abnormal connectivity, the optical line processing unit is further used for looping back towards the space division cross module and looping back at an optical port on the inner side of the optical line processing unit; the branch processing unit is further configured to continue to select two time division ports with normal connectivity in the time division cross module to perform bidirectional cross under the loopback condition until traversal and connectivity detection of all space division ports in the space division cross module connected to the optical line processing unit are completed.
The branch processing unit is further used for receiving a connectivity test command issued by the main control unit, generating a unique character string for the crossed link and writing the unique character string into the sending end; reading the character string from the receiving end corresponding to the sending end, extracting the written character string, and matching the written character string with the read character string; and reporting the matching result to a main control unit to realize the connectivity detection.
A complete machine self-detection method comprises the following steps: under the condition that the cross processing unit specifically comprises an air separation cross module and a time division cross module, under the control of the main control unit, a current air separation port connected with the branch processing unit in the air separation cross module is crossed from the air separation cross module to a first path of the time division cross module, and loops back at a time division port of the first path until traversal of cross loops of all time division ports corresponding to the current air separation port is completed; and then selecting a next space division port, continuously executing traversal of cross loopback on all time division ports corresponding to the next space division port until the traversal of the cross loopback of all the time division ports corresponding to all the space division ports is completed, and performing connectivity test on a loopback link between the branch processing unit and the cross processing unit and a cross loopback link inside the cross processing unit through the cooperative test of the cross processing unit and the branch processing unit to realize self-detection.
Wherein, through the cooperative test, the performing, by the branch processing unit, a connectivity test on the looped link between the branch processing unit and the cross processing unit specifically includes:
after receiving the connectivity test command sent by the main control unit, the branch processing unit generates a unique character string for the looped link and writes the unique character string into the sending end; and reading the character string from the receiving end corresponding to the sending end, extracting the written character string, matching the character string with the read character string, and reporting the matching result to the main control unit.
Wherein, through the cooperative test, the performing, by the branch processing unit, a connectivity test on the link that is cross-looped back inside the cross processing unit specifically includes:
after receiving a connectivity test command sent by the main control unit, the branch processing unit generates a unique character string for the crossed looped link and writes the unique character string into the sending end; and reading the character string from the receiving end corresponding to the sending end, extracting the written character string, matching the character string with the read character string, and reporting the matching result to the main control unit.
Wherein, the method also comprises: under the control of the main control unit, the branch processing unit performs connectivity test on the looped link between the optical line processing unit and the cross processing unit and the looped link inside the optical line processing unit through the cooperative test of the optical line processing unit, the cross processing unit and the branch processing unit, so as to realize self-detection.
The performing, by the branch processing unit, connectivity tests on the looped link between the optical line processing unit and the cross processing unit and the looped link inside the optical line processing unit specifically includes:
selecting two time division ports with normal connectivity in a time division cross module to carry out bidirectional cross, crossing one path of the time division ports to a current space division port in a space division cross module connected with a branch processing unit, crossing the other path of the time division ports to a current space division port in a space division cross module connected with an optical line processing unit, and then executing connectivity detection;
if the connectivity is normal, two time division ports with normal connectivity in the time division cross module are continuously selected to carry out the bidirectional cross until the traversal and connectivity detection of all the space division ports in the space division cross module connected with the optical line processing unit are completed; otherwise, the optical line processing unit loops back towards the space division cross module, and after the optical port on the inner side of the optical line processing unit loops back, two time division ports with normal connectivity in the time division cross module are continuously selected to carry out bidirectional cross until traversal and connectivity detection of all the space division ports in the space division cross module connected with the optical line processing unit are completed;
wherein the connectivity detection is: after receiving a connectivity test command sent by the main control unit, the branch processing unit generates a unique character string for the crossed link and writes the unique character string into the sending end; and reading the character string from the receiving end corresponding to the sending end, extracting the written character string, matching the character string with the read character string, and reporting the matching result to the main control unit.
Under the control of the main control unit, the cross processing unit performs cross loopback in a space division/time division mode in a traversing mode, and the branch processing unit performs connectivity test on a loopback link between the branch processing unit and the cross processing unit and a cross loopback link inside the cross processing unit through the cooperative test of the cross processing unit and the branch processing unit, so that self-detection is realized.
The invention can automatically complete the detection of the self state of the Service related chips on each SDH NETwork element, the connection state between the chips and the Service connection state between the chips through the cooperative test of the built-in test unit, such as the main control unit, the cross processing unit and the branch processing unit, in the SDH equipment, and the method can be widely applied to the fast test of the whole equipment production line of the SDH/Optical fiber Synchronous NETwork (SONET)/SDH-based Multi-Service Transport Platform (MSTP, Multi-Service Transport Platform) before the equipment is opened, the fast self test of the whole working condition before the equipment is opened, and the like.
Drawings
Fig. 1 is a schematic diagram of a networking test of a conventional test SDH network element;
FIG. 2 is a schematic diagram of the structure of the system of the present invention;
FIG. 3 is a schematic diagram of a complete machine test according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of the implementation of the method of the present invention.
Detailed Description
The basic idea of the invention is: under the control of the main control unit, the cross processing unit performs cross loopback in a space division/time division mode in a traversing mode, and the branch processing unit performs connectivity test on a loopback link between the branch processing unit and the cross processing unit and a cross loopback link inside the cross processing unit through the cooperative test of the cross processing unit and the branch processing unit, so that self-detection is realized.
The following describes the embodiments in further detail with reference to the accompanying drawings.
As shown in fig. 2, a complete machine self-testing system includes: the system comprises a main control unit, a cross processing unit and a branch processing unit. The main control unit is used for controlling the cooperative test of the cross processing unit and the branch processing unit to realize self-detection. The cross processing unit is used for performing cross loopback in a space division/time division mode in a traversal mode under the control of the main control unit. And the branch processing unit is used for performing connectivity test on a loopback link between the branch processing unit and the cross processing unit and a loopback link inside the cross processing unit under the control of the main control unit.
Here, the cross processing unit is further configured to receive a loopback command issued by the main control unit, and loop back at the current space division port connected to the branch processing unit. The branch processing unit is further used for receiving a connectivity test command sent by the main control unit, generating a unique character string for the looped link and writing the unique character string into the sending end; and reading the character string from a receiving end corresponding to the sending end, extracting the written character string, matching the written character string with the read character string, and reporting the matching result to the main control unit. And when the written character string is matched with the read character string, the loopback link is normal in connectivity.
Here, the interleaving processing unit specifically includes a space division interleaving module and a time division interleaving module. The space division cross module is used for carrying out cross loopback in a space division mode; the time division cross module is used for carrying out cross loopback in a time division mode.
The cross processing unit further performs cross loopback in a space division/time division mode in a traversal mode through the space division cross module and the time division cross module, and specifically comprises the following steps: crossing a current space division port connected with a branch processing unit in a space division cross module from the space division cross module to a first path of the time division cross module, and looping back at a time division port of the first path until traversing of cross loops of all time division ports corresponding to the current space division port is completed; and at the next space division port, continuously executing the traversal of the cross loopback on all the time division ports corresponding to the next space division port until the traversal of the cross loopback on all the time division ports corresponding to all the space division ports is completed.
Here, the branch processing unit is further configured to receive a connectivity test command issued by the main control unit, generate a unique character string for the cross looped link, and write the unique character string into the sending end; and reading the character string from a receiving end corresponding to the sending end, extracting the written character string, matching the written character string with the read character string, and reporting the matching result to the main control unit. And when the written character string is matched with the read character string, the link connectivity of the cross loopback is normal.
A complete machine self-detection system, the system also includes: the optical line processing unit is used for looping back towards the direction of the cross processing unit under the control of the main control unit and looping back at an optical port on the inner side of the optical line processing unit. The main control unit is further used for controlling the cooperative test of the optical line processing unit, the cross processing unit and the branch processing unit to realize self-detection.
Here, the interleaving processing unit specifically includes a space division interleaving module and a time division interleaving module. The space division cross module is used for carrying out cross loopback in a space division mode; the time division cross module is used for carrying out cross loopback in a time division mode.
The branch processing unit is further configured to select two time division ports with normal connectivity in the time division cross module to perform bidirectional cross, cross one of the time division ports to a current space division port in the space division cross module connected to the branch processing unit, cross the other time division port to a current space division port in the space division cross module connected to the optical line processing unit, and perform connectivity detection. The tributary processing unit and the optical line processing unit are described below separately for different detection results of connectivity detection.
And under the normal connectivity state, the branch processing unit is further used for continuously selecting two time division ports with normal connectivity in the time division cross module to perform the bidirectional cross until the traversal and connectivity detection of all the space division ports in the space division cross module connected with the optical line processing unit are completed.
In the state of abnormal connectivity, the optical line processing unit is further used for looping back towards the space division cross module and looping back at an optical port inside the optical line processing unit. And the branch processing unit is further used for continuously selecting two time division ports with normal connectivity in the time division cross module to carry out bidirectional cross under the condition of loopback until the traversal and connectivity detection of all the space division ports in the space division cross module connected with the optical line processing unit are completed.
Here, the branch processing unit is further configured to receive a connectivity test command issued by the main control unit, generate a unique character string for the crossed link, and write the unique character string into the sending end; reading the character string from a receiving end corresponding to the sending end, extracting the written character string, and matching the written character string with the read character string; and reporting the matching result to a main control unit, and specifically realizing the connectivity detection. And when the written character string is matched with the read character string, the connection of the crossed link is normal.
To sum up, the present invention mainly includes: the SDH equipment testing method comprises the steps of analyzing SDH network elements such as ASIC special chips, key circuit devices and the like which are passed by services in SDH equipment, designing and realizing testing units for all composition units of the SDH, such as a main control unit, a cross processing unit and a branch processing unit, and arranging the testing units in respective running software versions, starting the built-in testing units to work cooperatively when a complete machine testing function is to be activated, testing the working condition of the complete machine SDH equipment by combining the devices passed by the services, and outputting a testing result after the testing is finished, so that the faults caused by the devices possibly failed or production defects are quickly analyzed. The aim of detecting the whole working condition of the SDH equipment can be achieved by performing traversal loopback intersection on the SDH space division/time division intersection matrix, performing loopback function of a regeneration section/multiplexing section/high-order channel chip and performing connectivity test on the loopback by combining with the overhead field of the SDH equipment. The automatic test and analysis scheme with expert diagnosis function provided by the invention can effectively solve the possible faults of new equipment in the SDH equipment scale production, and can carry out rapid detection and positioning, thereby improving the efficiency.
The embodiment of the system is as follows: taking an STM-1 optical circuit board with 4 optical ports and a 32-path E1 branch circuit board as examples, as shown in fig. 3, a schematic diagram of a complete machine test of the embodiment of the system is shown, where STM-1 is an abbreviation of Synchronous transport module Level 1 and is a 155M Synchronous transmission module; e1 is a pulse code modulated signal comprising 32-way 64 kbits/second. In fig. 3, the main control unit is configured to complete control of a test process, analysis of a test result, output of a test result, and the like; the branch processing unit, the optical line processing unit, the cross processing unit and the like execute the command issued by the main control unit and return the execution result. In this way, the main control unit controls the cooperative cooperation among the branch processing unit, the cross processing unit and the optical line processing unit to realize automatic testing. The following describes the tributary processing unit, the optical line processing unit, and the cross processing unit in detail.
A Plesiochronous Digital Hierarchy (PDH) tributary module in the tributary processing unit for generating a PDH E1 signal. A lower-order mapping/demapping processing module in the tributary processing unit, configured to perform functions such as mapping/demapping processing of a PDH E1 signal generated by the PDH tributary module, where the mapping/demapping includes: generating a unique overhead J2 byte, and transmitting and receiving overhead J2 bytes. This overhead J2 bytes is: the unique string generated to perform connectivity checks described above.
The space division cross module in the cross processing unit is configured to complete functions such as cross scheduling of space division service signals according to a dynamically specified connection relationship, for example, a connection relationship between a certain space division port of the space division cross module and the branch processing unit. And the time division cross module is used for finishing functions of cross scheduling of time division service signals and the like according to a dynamically specified connection relation, such as the connection relation that a certain space division port of the space division cross module crosses a certain time division port of the time division cross module.
And an STM-1 regeneration section/multiplexing section/high-order channel high-order overhead processing module in the optical line processing unit is used for completing section/channel overhead processing, inward and outward signal loopback processing and other functions. Wherein, the inward loop is as follows: the optical line processing unit loops back to an optical port on the inner side of the optical line processing unit; outward loop looping finger: and the optical line processing unit loops back to the space division cross module. And the optical interface module is used for optical/electrical signal conversion and other functions.
In fig. 3, the positions of the loop loops are indicated by curved arrows, and the loop loops at the respective positions are described below.
The loop of the space division cross module is as follows: and sending out the signals entering the space division port in the space division cross module in the incoming direction from the space division port in the outgoing direction.
The loopback of the time division cross module is as follows: and sending out the signals entering the time division port in the time division cross module in the time division port in the incoming direction from the time division port in the outgoing direction. Here, the granularity of the time division cross can be switched according to SDH/SONET columns, or can be switched according to Virtual containers (VC 12, Virtual Container 12), and the loopback at this position is an equal capacity loopback connecting the granularity with the space division.
And (3) looping an STM-1 regeneration section/multiplexing section/high-order channel high-order overhead processing module towards the space division cross module.
The optical interface module loops the optical panel optical port back by using optical fibers.
In fig. 3, various forms of interleaving are also included, and one form of interleaving is interleaving by space division interleaving modules to complete space division interleaving. For example, such as bi-directional cross-connecting SP1 ports and TP1 ports; performing bidirectional cross connection on the SPm port and the TPm port; the SP1 port and the SPm port are connected in a bidirectional cross connection or the like. Another form of interleaving is interleaving of time division interleaving modules to complete time division interleaving. Such as, for example, bi-directional cross-connecting TP1 ports and TPm ports.
As shown in fig. 4, a complete machine self-detection method includes the following steps:
101, building a test environment, and initiating a connectivity test by a main control unit.
102, under the control of the main control unit, the cross processing unit performs cross loopback in a space division/time division mode in a traversal mode.
And 103, performing connectivity test on the loopback link between the branch processing unit and the cross processing unit and the loopback link inside the cross processing unit by the branch processing unit through the cooperative test of the cross processing unit and the branch processing unit, so as to realize self-detection.
For the technical solution formed by step 101 to step 103, here, in step 103, the performing, by the cross processing unit and the branch processing unit, a connectivity test on the link looped back between the branch processing unit and the cross processing unit by the branch processing unit specifically includes:
step 10311, after the cross processing unit receives the loopback command issued by the main control unit, the cross processing unit loops back at the current space division port connected with the branch processing unit.
Step 10312, after the branch processing unit receives the connectivity test command issued by the main control unit, generating a unique character string for the looped link and writing the unique character string into the sending end; and reading the character string from a receiving end corresponding to the sending end, extracting the written character string, matching the written character string with the read character string, and reporting the matching result to the main control unit.
And when the written character string is matched with the read character string, the loopback link is normal in connectivity.
Here, in the case that the interleaving unit specifically includes a space division interleaving module and a time division interleaving module, the specific processing procedure of step 102 includes:
step 1021, the current space division port connected with the branch processing unit in the space division cross module is crossed from the space division cross module to the first path of the time division cross module, and loops back at the time division port of the first path until the traversal of the cross loops of all the time division ports corresponding to the current space division port is completed.
Step 1022, selecting the next space division port, and continuing to perform traversal of the cross loopback on all the time division ports corresponding to the next space division port until the traversal of the cross loopback on all the time division ports corresponding to all the space division ports is completed.
Correspondingly, in step 103, the performing, by the cross processing unit and the branch processing unit, a connectivity test on the cross looped link inside the cross processing unit by the branch processing unit specifically includes:
10321, after receiving the connectivity test command sent by the main control unit, the branch processing unit generates a unique character string for the cross looped link and writes the unique character string into the sending end; and reading the character string from a receiving end corresponding to the sending end, extracting the written character string, matching the written character string with the read character string, and reporting the matching result to the main control unit.
And when the written character string is matched with the read character string, the link connectivity of the cross loopback is normal.
A complete machine self-detection method, the method also includes: under the control of the main control unit, the branch processing unit performs connectivity test on the looped link between the optical line processing unit and the cross processing unit and the looped link inside the optical line processing unit through the cooperative test of the optical line processing unit, the cross processing unit and the branch processing unit, so as to realize self-detection.
Here, when the cross processing unit specifically includes an air division cross module and a time division cross module, the performing, by the branch processing unit, a connectivity test on the link looped back between the optical line processing unit and the cross processing unit and the link looped back inside the optical line processing unit specifically includes:
selecting two time division ports with normal connectivity in the time division cross module to carry out bidirectional cross, crossing one path of the time division ports to a current space division port in the space division cross module connected with the branch processing unit, crossing the other path of the time division ports to a current space division port in the space division cross module connected with the optical line processing unit, and then executing connectivity detection.
The connectivity detection specifically comprises: after receiving a connectivity test command sent by the main control unit, the branch processing unit generates a unique character string for the crossed link and writes the unique character string into the sending end; and reading the character string from a receiving end corresponding to the sending end, extracting the written character string, matching the written character string with the read character string, and reporting the matching result to the main control unit. When the written character string is matched with the read character string, the connection of the crossed link is normal; when the written string does not match the read string, the cross link connectivity is not normal.
When the connectivity is normal, two time division ports with normal connectivity in the time division cross module are continuously selected to perform the bidirectional cross, one path of the time division ports is crossed to the next space division port in the space division cross module connected with the branch processing unit, and the other path of the time division ports is crossed to the next space division port in the space division cross module connected with the optical line processing unit to perform connectivity detection. And the traversal and the connectivity detection of all the space division ports in the space division cross module connected with the optical line processing unit are completed.
When the connectivity is abnormal, the optical line processing unit loops back towards the space division cross module, and after the optical port inside the optical line processing unit loops back, two time division ports with normal connectivity in the time division cross module are continuously selected under the condition of the loop back to carry out the bidirectional cross, one path of the time division ports is crossed to the next space division port in the space division cross module connected with the branch processing unit, and the other path of the time division ports is crossed to the next space division port in the space division cross module connected with the optical line processing unit to execute the connectivity detection. And the traversal and the connectivity detection of all the space division ports in the space division cross module connected with the optical line processing unit are completed.
The embodiment of the method is as follows: the invention relates to a whole machine testing method flow, which mainly comprises the following steps:
step 201, building a complete machine test environment.
Here, the test environment includes: 32-path E1 branch circuit boards, a master control board, a clock board, 4-optical port STM-1 optical circuit boards, power supply boards and the like, high-low order cross boards and the like. After the construction is finished, 4 optical ports of the STM-1 line unit are looped back by using optical fibers, namely, a transmitting signal is looped back to a receiving end of each optical port. Here, the E1 branch board is a specific implementation of the branch processing unit, the main control board is a specific implementation of the main control unit, the STM-1 optical circuit board is a specific implementation of the optical line processing unit, and the high-low-order cross board is a specific implementation of the cross processing unit.
Step 202, the main control board issues a loopback command to the high-low order cross board, and a space division port connected with the E1 branch board is looped back at the high-low order cross board.
Step 203, the main control board issues a connectivity test command to the E1 branch circuit boards, generates a unique J2 tracking character string for each VC12 branch circuit, and writes the unique J2 tracking character string into a transmitting end; after the receiving direction is stable, reading the character string tracked by the receiving direction J2; matching the J2 tracing character strings of the sending terminal and the receiving terminal, and reporting the matching result to the main control board.
Here, the J2 trace string is the unique string generated to complete the connectivity check.
And 204, crossing the space division port of the space division cross module in the high-low order cross board connected with the E1 branch board to the first path of the time division cross module in the high-low order cross board, and performing loopback processing on the time division port of the first path.
Here, in step 204, the selection of the time division ports is performed by using a traversal method, all the time division ports are sequentially traversed, meanwhile, at the space division port, the space division ports corresponding to the E1 branch boards are correspondingly traversed, the traversed space division ports are connected to the corresponding time division ports, and the time division ports are subjected to loopback processing.
Step 205, repeat step 203 to perform matching of J2 trace strings.
And step 206, repeating step 204 and step 205 until the traversal of the cross loopback of all the time division ports corresponding to all the space division ports is completed, and judging whether the connection path works normally by tracking whether the character strings are matched or not for the transceiving J2.
Here, after the traversal of the time division port is completed, the following process continues to complete the test of the connectivity of the STM-1 optical circuit board connected with the air division cross module in the high-low order cross board.
Step 207, selecting 2 time division ports with normal connectivity in the above steps, and performing bidirectional connection on the 2 ports in the time division cross module; in the space division cross module, an E1 branch board is bidirectionally connected to one of the time division ports for the space division port through the space division cross module.
And step 208, bidirectionally connecting the other time division port to a corresponding space division port of the STM-1 optical circuit board to be tested through the space division cross module.
Step 209, repeating step 203 to execute matching of J2 tracing character strings, if the matching is normal, indicating that the connectivity of the whole channel is normal, then executing step 212; if not, go to step 210.
And step 210, the main control board issues a command to the STM-1 optical circuit board, and an inward loopback is performed on an STM-1 regeneration section/multiplexing section/high-order channel high-order overhead processing module in the STM-1 optical circuit board.
And step 211, repeating the step 203 to execute matching of the J2 tracing character strings, if the matching fails, indicating that a fault exists in the STM-1 optical circuit board and the hollow cross module in the high-low order cross board, and recording the connectivity test result.
Step 212, repeatedly executing step 208 and step 209. In step 209, the selection of the space division ports corresponding to the STM-1 optical circuit board is performed by using a traversal method, and all the space division ports are sequentially traversed, and the test is completed after all the space division ports are traversed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (11)
1. The utility model provides a complete machine self-checking system which characterized in that, this system includes: the system comprises a main control unit, a cross processing unit and a branch processing unit; wherein,
the main control unit is used for controlling the cooperative test of the cross processing unit and the branch processing unit to realize self-detection;
the cross processing unit comprises a space division cross module for performing space division mode cross loopback and a time division cross module for performing time division mode cross loopback; the cross processing unit is used for crossing a current space division port connected with the branch processing unit in the space division cross module to a first path of the time division cross module from the space division cross module under the control of the main control unit, and looping back at a time division port of the first path until the traversal of the cross loopback of all time division ports corresponding to the current space division port is completed; at the next space division port, continuously executing the traversal of the cross loopback on all the time division ports corresponding to the next space division port until the traversal of the cross loopback on all the time division ports corresponding to all the space division ports is completed;
and the branch processing unit is used for performing connectivity test on a loopback link between the branch processing unit and the cross processing unit and a loopback link inside the cross processing unit under the control of the main control unit.
2. The system of claim 1, wherein the branch processing unit is further configured to receive a connectivity test command issued by the main control unit, generate a unique string for the looped link, and write the unique string into the sending end; and reading the character string from the receiving end corresponding to the sending end, extracting the written character string, matching the character string with the read character string, and reporting the matching result to the main control unit.
3. The system of claim 1, wherein the branch processing unit is further configured to receive a connectivity test command issued by the main control unit, generate a unique string for the cross looped link, and write the unique string into the sending end; and reading the character string from the receiving end corresponding to the sending end, extracting the written character string, matching the character string with the read character string, and reporting the matching result to the main control unit.
4. The system of claim 1, further comprising: the optical line processing unit is used for looping back towards the direction of the cross processing unit under the control of the main control unit and looping back at an optical port on the inner side of the optical line processing unit;
the main control unit is further configured to control the optical line processing unit, the cross processing unit, and the branch processing unit to perform cooperative testing, so as to implement self-detection.
5. The system according to claim 4, wherein the tributary processing unit is further configured to select two time division ports with normal connectivity in the time division cross module to perform bidirectional cross, cross one of the time division ports to a current space division port in the space division cross module connected to the tributary processing unit, cross the other of the time division ports to a current space division port in the space division cross module connected to the optical line processing unit, and perform the connectivity detection; in a normal connectivity state, the branch processing unit is further configured to continue to select two normal-connectivity time division ports in the time division cross module to perform the bidirectional cross until traversal and connectivity detection of all space division ports in the space division cross module connected to the optical line processing unit are completed; or,
in the state of abnormal connectivity, the optical line processing unit is further used for looping back towards the space division cross module and looping back at an optical port on the inner side of the optical line processing unit; the branch processing unit is further configured to continue to select two time division ports with normal connectivity in the time division cross module to perform bidirectional cross under the loopback condition until traversal and connectivity detection of all space division ports in the space division cross module connected to the optical line processing unit are completed.
6. The system of claim 5, wherein the branch processing unit is further configured to receive a connectivity test command issued by the main control unit, generate a unique string for the crossed link, and write the unique string into the sending end; reading the character string from the receiving end corresponding to the sending end, extracting the written character string, and matching the written character string with the read character string; and reporting the matching result to a main control unit to realize the connectivity detection.
7. A complete machine self-detection method is characterized by comprising the following steps: under the condition that the cross processing unit specifically comprises an air separation cross module and a time division cross module, under the control of the main control unit, a current air separation port connected with the branch processing unit in the air separation cross module is crossed from the air separation cross module to a first path of the time division cross module, and loops back at a time division port of the first path until traversal of cross loops of all time division ports corresponding to the current air separation port is completed; and then selecting a next space division port, continuously executing traversal of cross loopback on all time division ports corresponding to the next space division port until the traversal of the cross loopback of all the time division ports corresponding to all the space division ports is completed, and performing connectivity test on a loopback link between the branch processing unit and the cross processing unit and a cross loopback link inside the cross processing unit through the cooperative test of the cross processing unit and the branch processing unit to realize self-detection.
8. The method according to claim 7, wherein the performing, by the co-testing, the connectivity test on the looped link between the branch processing unit and the cross processing unit by the branch processing unit specifically includes:
after receiving the connectivity test command sent by the main control unit, the branch processing unit generates a unique character string for the looped link and writes the unique character string into the sending end; and reading the character string from the receiving end corresponding to the sending end, extracting the written character string, matching the character string with the read character string, and reporting the matching result to the main control unit.
9. The method according to claim 7, wherein the performing, by the co-testing, the connectivity test of the link that is cross-looped back inside the cross processing unit by the branch processing unit specifically includes:
after receiving a connectivity test command sent by the main control unit, the branch processing unit generates a unique character string for the crossed looped link and writes the unique character string into the sending end; and reading the character string from the receiving end corresponding to the sending end, extracting the written character string, matching the character string with the read character string, and reporting the matching result to the main control unit.
10. The method of claim 7, further comprising: under the control of the main control unit, the branch processing unit performs connectivity test on the looped link between the optical line processing unit and the cross processing unit and the looped link inside the optical line processing unit through the cooperative test of the optical line processing unit, the cross processing unit and the branch processing unit, so as to realize self-detection.
11. The method according to claim 10, wherein the performing connectivity tests on the link looped back between the optical line processing unit and the cross processing unit and the link looped back inside the optical line processing unit by the branch processing unit specifically includes:
selecting two time division ports with normal connectivity in a time division cross module to carry out bidirectional cross, crossing one path of the time division ports to a current space division port in a space division cross module connected with a branch processing unit, crossing the other path of the time division ports to a current space division port in a space division cross module connected with an optical line processing unit, and then executing connectivity detection;
if the connectivity is normal, two time division ports with normal connectivity in the time division cross module are continuously selected to carry out the bidirectional cross until the traversal and connectivity detection of all the space division ports in the space division cross module connected with the optical line processing unit are completed; otherwise, the optical line processing unit loops back towards the space division cross module, and after the optical port on the inner side of the optical line processing unit loops back, two time division ports with normal connectivity in the time division cross module are continuously selected to carry out bidirectional cross until traversal and connectivity detection of all the space division ports in the space division cross module connected with the optical line processing unit are completed;
wherein the connectivity detection is: after receiving a connectivity test command sent by the main control unit, the branch processing unit generates a unique character string for the crossed link and writes the unique character string into the sending end; and reading the character string from the receiving end corresponding to the sending end, extracting the written character string, matching the character string with the read character string, and reporting the matching result to the main control unit.
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| CN1366393A (en) * | 2000-12-14 | 2002-08-28 | 美国阿尔卡塔尔资源有限合伙公司 | Wave length flexible light retransmission device used in bidirectional single optical fiber wave part multiplexing system testing |
| EP1727309A1 (en) * | 2005-05-27 | 2006-11-29 | Alcatel | Methods and apparatus for monitoring link integrity for signaling traffic over a path traversing hybrid ATM/ethernet infrastructure in support of packet voice service provisioning |
| CN101197733A (en) * | 2007-12-18 | 2008-06-11 | 中兴通讯股份有限公司 | Automatic detection method and device for network connectivity |
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| CN1366393A (en) * | 2000-12-14 | 2002-08-28 | 美国阿尔卡塔尔资源有限合伙公司 | Wave length flexible light retransmission device used in bidirectional single optical fiber wave part multiplexing system testing |
| EP1727309A1 (en) * | 2005-05-27 | 2006-11-29 | Alcatel | Methods and apparatus for monitoring link integrity for signaling traffic over a path traversing hybrid ATM/ethernet infrastructure in support of packet voice service provisioning |
| CN101197733A (en) * | 2007-12-18 | 2008-06-11 | 中兴通讯股份有限公司 | Automatic detection method and device for network connectivity |
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