CN101360018A - Network fault detection method, apparatus and system - Google Patents
Network fault detection method, apparatus and system Download PDFInfo
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- CN101360018A CN101360018A CNA2008101423506A CN200810142350A CN101360018A CN 101360018 A CN101360018 A CN 101360018A CN A2008101423506 A CNA2008101423506 A CN A2008101423506A CN 200810142350 A CN200810142350 A CN 200810142350A CN 101360018 A CN101360018 A CN 101360018A
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Abstract
An embodiment of the invention discloses a detection method of network failure, comprising: selecting a Level II exchange unit according to an idle output port of a Level I exchange unit that is the site of any specific path and an idle input port of a Level III exchange unit that is the site of any specific path, the idle output port of the Level I exchange unit that is the site of a test input port and the idle input port of the Level III exchange unit that is the site of a test output port; closing the corresponding switches in symmetrical network and building a test path according to the test input port, the selected Level II exchange unit, the Level I exchange unit that is the site of the specific path, the Level II exchange unit, the Level III exchange unit and the test output port; and detecting the switches on the test path to see whether fault exists. The invention also provides a device and a system for detecting network failure, realizing the fault detection to all switches in the whole CLOS network, and overcoming the defects of great time and labor input when switching test interfaces manually and costly undertaking.
Description
Technical field
The present invention relates to the communications field, specifically, relate to a kind of detection method, Apparatus and system of network failure.
Background technology
The CLOS network is proposed in nineteen fifty-three by Charles Clos, and typical C LOS network is three grades of symmetrical networks, as shown in Figure 1.Three grades: stage1, stage2, stage3, symmetry: lambda line number=outlet number, total inbound port number and total outbound port number average are N.Marked direction among Fig. 1, do not had direction, only represented annexation but be actually.N represents the input port quantity of Stage1, also is the output port quantity of Stage3; M represents the output port quantity of Stage1, also is the input port quantity of Stage3; R represents input, the output port quantity of Stage2.As seen, Stage1 has the crosspoint of r n*m, and Stage2 has the crosspoint of m r*r, and Stage3 has the crosspoint of r m*n, and total input, output port are counted N=n*r.The principle of CLOS network is: any one unit, all there is and has only a connection all unit to next stage or previous stage.
The crosspoint that constitutes the CLOS network can be switch arrays, as shown in Figure 2, by control switch closure wherein, can realize the connection of any input port to any output port.The crosspoint that constitutes the CLOS network can also be three grades of CLOS networks as shown in Figure 1.
For guaranteeing of the reliable connection of the incumbent meaning input port of CLOS network implementation to any output port, need to detect the failure condition in the network, orient the switch that breaks down.In the prior art, by using the dependence test instrument CLOS network is carried out manual test, not only need to use special testing equipment, and need manual switch test interface, require a great deal of time and manpower, cost is very high.
Summary of the invention
The technical problem that the embodiment of the invention will solve is: detection method, Apparatus and system that a kind of network failure is provided, overcome existing by using the dependence test instrument that the CLOS network is carried out manual test, not only need to use special testing equipment, and the manual switch test interface of needs, require a great deal of time and manpower the defective that cost is very high.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of detection method of network failure, the symmetrical network that is used for one at least three grades carries out fault detect, above-mentioned at least three grades symmetrical network comprises first order crosspoint, second level crosspoint and third level crosspoint, each grade crosspoint comprises input port, output port and switch, the arbitrary idle input port of arbitrary first order crosspoint is the test input mouth, the arbitrary idle output port of arbitrary third level crosspoint is the test output terminal mouth, this method comprises: according to the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at arbitrary particular path place and place, the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at above-mentioned test input mouth place and above-mentioned test output terminal mouth place is chosen second level crosspoint; First order crosspoint, second level crosspoint, third level crosspoint and above-mentioned test output terminal mouth according to above-mentioned test input mouth, the above-mentioned second level crosspoint of choosing, above-mentioned particular path place, corresponding switch is set up test path in the closed above-mentioned symmetrical network; Whether the switch that detects on the above-mentioned test path breaks down.
Correspondingly, the embodiment of the invention also provides a kind of checkout gear of network failure, the symmetrical network that is used for one at least three grades carries out fault detect, above-mentioned at least three grades symmetrical network comprises first order crosspoint, second level crosspoint and third level crosspoint, each grade crosspoint comprises input port, output port and switch, the arbitrary idle input port of arbitrary first order crosspoint is the test input mouth, the arbitrary idle output port of arbitrary third level crosspoint is the test output terminal mouth, said apparatus comprises: memory cell is used to store the input port of above-mentioned each grade crosspoint, the state of output port and switch; Search the unit, be used in said memory cells, according to the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at arbitrary particular path place and place, above-mentioned test input mouth place and above-mentioned test output terminal mouth place, choose second level crosspoint; Control unit, be used for first order crosspoint, second level crosspoint, third level crosspoint and above-mentioned test output terminal mouth according to above-mentioned test input mouth, the above-mentioned second level crosspoint of choosing, above-mentioned particular path place, control the closed corresponding switch of above-mentioned symmetrical network, set up test path; Detecting unit, whether the switch that is used to detect on the above-mentioned test path breaks down.
Correspondingly, the embodiment of the invention also provides a kind of detection system of network failure, comprise first device and second device, above-mentioned second device comprises first order crosspoint, second level crosspoint, third level crosspoint at least, each grade crosspoint comprises input port, output port and switch, the arbitrary idle input port of arbitrary first order crosspoint is the test input mouth, and the arbitrary idle output port of arbitrary third level crosspoint is the test output terminal mouth, wherein:
Above-mentioned first device, be used at above-mentioned second device, according to the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at arbitrary particular path place and place, above-mentioned test input mouth place and above-mentioned test output terminal mouth place, choose second level crosspoint; First order crosspoint, second level crosspoint, third level crosspoint and above-mentioned test output terminal mouth according to above-mentioned test input mouth, the above-mentioned second level crosspoint of choosing, above-mentioned particular path place, control the closed corresponding switch of above-mentioned second device, set up test path; Whether the switch that detects on the above-mentioned test path breaks down.
The technical scheme that is provided by the invention described above embodiment as can be seen, the invention provides detection method, the Apparatus and system of network failure, by a test input mouth and a test output terminal mouth, signal on certain bar particular path in the CLOS network is transferred on the test path, thereby realize fault detect to all switches in the whole C LOS network, overcome manual switch test interface, required a great deal of time and manpower, the defective that cost is very high.
Description of drawings
Fig. 1 is the configuration diagram of the CLOS network of three grades of symmetries in the prior art;
Fig. 2 is the schematic diagram that constitutes the crosspoint of CLOS network in the prior art;
The flow chart of the detection method of the network failure that Fig. 3 provides for the embodiment of the invention;
The flow chart of the detection method of the network failure in the netinit process that Fig. 4 provides for the embodiment of the invention;
The schematic diagram of setting up test path that Fig. 5 provides for the embodiment of the invention;
Another schematic diagram of setting up test path that Fig. 6 provides for the embodiment of the invention;
The flow chart of the detection method of the network failure in the network operation process that Fig. 7 provides for the embodiment of the invention;
The schematic diagram of the detection system of the network failure that Fig. 8 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of detection method, device and system of network failure, can overcome existing by using the dependence test instrument that the CLOS network is carried out manual test, not only need to use special testing equipment, and the manual switch test interface of needs, require a great deal of time and manpower the shortcoming that cost is very high.For making purpose of the present invention, technical scheme and advantage clearer, the embodiment that develops simultaneously with reference to the accompanying drawings, the present invention is described in more detail.
As shown in Figure 3, the flow chart of the detection method of the network failure that provides for the embodiment of the invention, the symmetrical network that is used for one at least three grades carries out fault detect, above-mentioned at least three grades symmetrical network comprises first order crosspoint, second level crosspoint and third level crosspoint, each grade crosspoint comprises input port, output port and switch, the arbitrary idle input port of arbitrary first order crosspoint is the test input mouth, the arbitrary idle output port of arbitrary third level crosspoint is the test output terminal mouth, and this method comprises:
Step S301, according to the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at arbitrary particular path place and place, above-mentioned test input mouth place and above-mentioned test output terminal mouth place, choose second level crosspoint;
Concrete, above-mentioned particular path can be already present path in the above-mentioned symmetrical network, or the path that will set up in above-mentioned symmetrical network.
If above-mentioned test input mouth is identical with the first order crosspoint at above-mentioned particular path place, and above-mentioned test output terminal mouth is identical with the third level crosspoint at above-mentioned particular path place, and the second level crosspoint of choosing above-mentioned particular path place is as the above-mentioned second level crosspoint of choosing.
Step S302, according to first order crosspoint, second level crosspoint, third level crosspoint and the above-mentioned test output terminal mouth at above-mentioned test input mouth, the above-mentioned second level crosspoint of choosing, above-mentioned particular path place, corresponding switch is set up test path in the closed above-mentioned symmetrical network;
Whether step S303, the switch that detects on the above-mentioned test path break down.
Concrete, the state of switch has normally, opens circuit, three kinds of short circuits.
Above-mentioned steps S303 specifically comprises:
Send test massage to above-mentioned test input mouth, detect above-mentioned test output terminal mouth and whether receive above-mentioned test signal;
If above-mentioned test output terminal mouth does not receive above-mentioned test signal, then represent the condition deficiency, can't determine which switch on the above-mentioned test path opens circuit;
If above-mentioned test output terminal mouth receives above-mentioned test signal, disconnect the arbitrary switch on the above-mentioned test path, if above-mentioned test output terminal mouth still receives above-mentioned test signal, determine above-mentioned arbitrary switch short circuit; If above-mentioned test output terminal mouth does not receive above-mentioned test signal, determine that above-mentioned arbitrary switch is normal.
The detection method of the network failure that present embodiment provides, by a test input mouth and a test output terminal mouth, signal on certain bar particular path in the CLOS network is transferred on the test path, thereby realize fault detect to all switches in the whole C LOS network, overcome manual switch test interface, require a great deal of time and manpower the defective that cost is very high.
In the process of CLOS netinit, need travel through detection to switches all in the network, check whether to have and open circuit or the fault of short circuit.
The flow chart of the detection method of the network failure in the netinit process that Fig. 4 provides for the embodiment of the invention is used for all switches of one at least three grades symmetrical network are traveled through detection.Suppose that input port number and output port number average that this network is total are N+1, wherein 1 input port is as the test input mouth, and 1 output port is as the test output terminal mouth, and then actual available input port number and output port number average are N.The input port quantity of first order crosspoint is n, also is the output port quantity of third level crosspoint; The output port quantity of first order crosspoint is m, also is the input port quantity of third level crosspoint; The input of second level crosspoint, output port quantity are r.At this moment, the total quantity in the path in the network is N*N*m, need the switch on all paths be detected.
Said method comprises:
Step S401, choose a particular path;
Owing in the netinit process, do not have any paths in the network, so, need choose a particular path in advance in order to realize fault detect to switch in the network.
Concrete, choose particular path, can adopt the mode of traversal, choose input port earlier, choose output port again, choose second level crosspoint then, thereby determine a particular path.Then, by changing in the middle of input port, output port and the second level crosspoint, determine a different particular path.
Step S402, according to the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at particular path place and place, test input mouth place and test output terminal mouth place, choose second level crosspoint;
Step S403, according to first order crosspoint, second level crosspoint, third level crosspoint and the test output terminal mouth at test input mouth, the second level crosspoint of choosing, particular path place, corresponding switch is set up test path in the closed symmetrical network;
Concrete, choose second level crosspoint, set up test path, divide following three kinds of situations:
First kind: if the test input mouth is different with the first order crosspoint at particular path place, and the test output terminal mouth is different with the third level crosspoint at particular path place, and the second level crosspoint of then choosing is different from the second level crosspoint at particular path place.
As shown in Figure 5, particular path (solid line part) is: (n-1) output port of 0 input port of first order crosspoint (r-1) → second level crosspoint 1 → third level crosspoint (r-1), and the test input mouth is in first order crosspoint 0, the test output terminal mouth is chosen second level crosspoint 0 in third level crosspoint 0.Utilize the bidirectional characteristic of crosspoint connecting line, by simultaneously with two switch closures on same incoming line or the same output line, corresponding two output ports or two input ports can be coupled together, for example with 0 output port of first order crosspoint (r-1) among Fig. 5 and (m-1) output port couple together, (m-1) input port and 0 input port of third level crosspoint (r-1) coupled together.Set up following test path (dotted portion adds middle two solid lines): test input mouth → second level crosspoint 0 → first order crosspoint (r-1) → second level crosspoint 1 → third level crosspoint (r-1) → second level crosspoint 0 → test output terminal mouth.
Second kind: if the test input mouth is identical with the first order crosspoint at particular path place, and the test output terminal mouth is identical with the third level crosspoint at particular path place, then with the second level crosspoint at particular path place as the second level crosspoint of choosing, do not need additionally to choose other second level crosspoint.
As shown in Figure 6, particular path (solid line part) is: (n-1) output port of (n-1) input port of first order crosspoint 0 → second level crosspoint 0 → third level crosspoint 0, and the test input mouth is in first order crosspoint 0, the test output terminal mouth is in third level crosspoint 0, then can directly utilize the second level crosspoint of particular path, not need additionally to choose second level crosspoint.By simultaneously with two switch closures on same incoming line or the same output line, be about to 0 input port of first order crosspoint 0 among Fig. 6 and (n-1) input port couple together, with 0 output port of third level crosspoint 0 and (n-1) output port couple together.Set up following test path (dotted portion adds middle two solid lines): test input mouth → second level crosspoint 0 → test output terminal mouth.
The third: between top two kinds, promptly have only the test input mouth identical, perhaps have only the test output terminal mouth identical with the third level crosspoint at particular path place with the first order crosspoint at particular path place.Can adopt corresponding connected mode to set up test path in conjunction with top two kinds situation.
Step S404, send test massage, detect the test output terminal mouth and whether receive test signal to the test input mouth; If receive, execution in step S405; If do not receive, execution in step S411;
If the test output terminal mouth does not receive test signal, then represent the condition deficiency, can't determine which switch on the test path opens circuit;
Step S405, choose a switch on the test path;
Step S406, judge whether this switch has been confirmed as short circuit or normal; If not, execution in step S407; If, execution in step S410;
In the process of test, if find current test path the switch of process for normal or short circuit, illustrate that then this switch has been detected, be the switch of known results.Otherwise, continue to detect the state of this switch.
Step S407, disconnect this switch,, determine this switch short circuit if the test output terminal mouth still receives test signal; If the test output terminal mouth does not receive test signal, determine that this switch is normal;
Step S408, closed this switch;
Step S409, judge whether to have detected all switches on the test path; If not, execution in step S410; If, execution in step S411;
Step S410, choose the next switch on the test path, change step S406 then;
All switches on step S411, the disconnection test path;
Step S412, judge whether to set up test path at particular paths all in the network, if not, execution in step S413; If, process ends;
Step S413, choose another particular path, change step S402 then.
The detection method of the network failure in the netinit process that present embodiment provides, by a test input mouth and a test output terminal mouth, signal on certain bar particular path in the CLOS network is transferred on the test path, thereby realize fault detect to all switches in the whole C LOS network, overcome manual switch test interface, require a great deal of time and manpower the defective that cost is very high.By the initialization self check, can predict the failure condition of switch to greatest extent, to maintain easily, the switch of fault be can also when calculating route, avoid, thereby the maintainability and the fault-tolerance of CLOS network improved.
In the process of the CLOS network operation, when connecting a certain input port and a certain output port, can calculate a routed path earlier as needs.Before setting up this paths, need detect earlier, if all switches are normal on the path, just allow to connect.When already present path goes wrong in the network, also need the switch of detection failure.
The flow chart of the detection method of the network failure in the network operation process that Fig. 7 provides for the embodiment of the invention, be used for the switch on the particular path of one at least three grades symmetrical network is carried out fault detect, or the switch on the particular path of soon setting up in this network is carried out fault detect.Suppose that input port number and output port number average that this network is total are N+1, wherein 1 input port is as the test input mouth, and 1 output port is as the test output terminal mouth, and then actual available input port number and output port number average are N.The input port quantity of first order crosspoint is n, also is the output port quantity of third level crosspoint; The output port quantity of first order crosspoint is m, also is the input port quantity of third level crosspoint; The input of second level crosspoint, output port quantity are r.
Said method comprises:
Step S701, judge whether the first order crosspoint at test input mouth place exists idle output port, whether the third level crosspoint at test output terminal mouth place exists idle input port, and whether the first order crosspoint at particular path place exists the third level crosspoint at idle output port and particular path place whether to have idle input port; If there is execution in step S702; If there is no, execution in step S714
Step S702, according to the idle output port of the first order crosspoint at test input mouth place, the idle input port of the third level crosspoint at test output terminal mouth place, the idle input port of the idle output port of the first order crosspoint at particular path place and the third level crosspoint at particular path place is searched all qualified second level crosspoints;
Concrete, qualified second level crosspoint is: the idle output port that can connect the first order crosspoint at test input mouth place, the idle input port of the third level crosspoint at test output terminal mouth place, the second level crosspoint of the idle input port of the idle output port of the first order crosspoint at particular path place and the third level crosspoint at particular path place.
Step S703, choose a qualified second level crosspoint;
Step S704, according to first order crosspoint, second level crosspoint, third level crosspoint and the test output terminal mouth at test input mouth, the second level crosspoint of choosing, particular path place, corresponding switch is set up test path in the closed symmetrical network;
Step S705, send test massage, detect the test output terminal mouth and whether receive test signal to the test input mouth; If receive, execution in step S706; If do not receive, execution in step S711;
Step S706, choose a switch on the test path;
Step S707, disconnect this switch,, determine this switch short circuit if the test output terminal mouth still receives test signal; If the test output terminal mouth does not receive test signal, determine that this switch is normal;
Step S708, closed this switch;
Step S709, judge whether to have detected all switches on the test path; If not, execution in step S710; If flow process finishes;
Step S710, choose the next switch on the test path, change step S707 then;
All switches on step S711, the disconnection test path;
Step S712, judge whether to choose all qualified second level crosspoints, if not, execution in step S713; If, execution in step S714;
Step S713, choose next qualified second level crosspoint, change step S704 then;
Step S714, condition deficiency can't detect the result.
In the process of the network operation, can only use idle port to set up test path, so can not guarantee can both carry out fault detect at every turn,, then return the condition deficiency if idle port is not enough, can't detect the result.If idle port is enough, then find all possible test path earlier, test in order then, till testing out the result,, still can not test out the result if traveled through all test paths, then return the condition deficiency, can't detect the result.
The detection method of the network failure in the network operation process that present embodiment provides, by idle port in a test input mouth and test output terminal mouth and the network, signal on certain bar particular path in the CLOS network is transferred on the test path, thereby realize fault detect to the switch on the particular path, overcome manual switch test interface, require a great deal of time and manpower the defective that cost is very high.By the detection in the network operation process, before each route connects foundation, carry out fault detect, to avoid the switch of routed path through fault, business can normally be used after guaranteeing to connect foundation.Can also detect the path that goes wrong, detect the switch that breaks down,, when calculate route next time, can avoid using these breakdown switches as much as possible, thereby improve fault-tolerance, the reliability of system so that note.
The schematic diagram of the detection system of the network failure that Fig. 8 provides for the embodiment of the invention, this system comprises first device, 801 and second device 802, second device 802 comprises first order crosspoint 8021, second level crosspoint 8022, third level crosspoint 8023 at least, each grade crosspoint comprises input port, output port and switch, the arbitrary idle input port of arbitrary first order crosspoint is the test input mouth, the arbitrary idle output port of arbitrary third level crosspoint is the test output terminal mouth, wherein:
As shown in Figure 8, first device 801 specifically comprises:
Detecting unit 8014, whether the switch that is used to detect on the test path breaks down.
Above-mentioned control unit 8013 also is used to control second device 802 and sets up above-mentioned particular path.
Said memory cells 8011 also is used for the testing result according to detecting unit 8014, upgrades the state of the switch of each grade crosspoint.
Above-mentioned detecting unit 8014 specifically comprises:
Signal generating unit links to each other with the test input mouth, is used to generate test signal, sends test massage to the test input mouth;
Signal receiving unit links to each other with the test output terminal mouth, is used to judge whether the test output terminal mouth receives above-mentioned test signal;
The fault determining unit is used for when the test output terminal mouth receives this test signal, disconnects the arbitrary switch on the above-mentioned test path, if the test output terminal mouth still receives this test signal, determines above-mentioned arbitrary switch short circuit; If the test output terminal mouth does not receive this test signal, determine that above-mentioned arbitrary switch is normal.
First device that present embodiment is described and second device can be integrated in the equipment, also can be separate.
The present invention can be applied to automatic wiring device such as automatic wiring frame (ADF, AutomaticDistribute Frame) in, ADF equipment is as a kind of electrical power wiring assembly based on twisted-pair feeder in the communication system, have user-side port and equipment side port (the equipment here is meant the access device based on twisted-pair feeder), can realize that any user-side port is connected to the function of any apparatus side ports.ADF equipment mainly is divided into two parts, control module and space division switching network module.
All switches in the control module control space division switching network are set up routed path, and are come the switch in the space division switching network is carried out fault detect by setting up test path.
The space division switching network module is made of three grades of CLOS networks.Under the control of control module, finish the exchange that is input to any output arbitrarily.The space division switching network module provides a user-side port as the test input mouth, and the subscribers feeder that also provides N user-side port to finish N road user side inserts.The space division switching network module provides an equipment side interface as the test output terminal mouth, also provides N equipment side port to finish N road subscribers feeder and is connected to network equipment.
The present invention also can be applied in the pure optical switching network based on the CLOS network, or the intelligent optical fiber distribution frame (Optical Distribution Frame, ODF) on.
The detection method of the network failure that the embodiment of the invention provides, device and system, by a test input mouth and a test output terminal mouth, signal on certain bar particular path in the CLOS network is transferred on the test path, thereby realize fault detect to all switches in the whole C LOS network, overcome manual switch test interface, require a great deal of time and manpower the defective that cost is very high.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1, a kind of detection method of network failure, the symmetrical network that is used for one at least three grades carries out fault detect, it is characterized in that, described at least three grades symmetrical network comprises first order crosspoint, second level crosspoint and third level crosspoint, each grade crosspoint comprises input port, output port and switch, the arbitrary idle input port of arbitrary first order crosspoint is the test input mouth, the arbitrary idle output port of arbitrary third level crosspoint is the test output terminal mouth, and this method comprises:
According to the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at arbitrary particular path place and place, described test input mouth place and described test output terminal mouth place, choose second level crosspoint;
First order crosspoint, second level crosspoint, third level crosspoint and described test output terminal mouth according to described test input mouth, the described second level crosspoint of choosing, described particular path place, corresponding switch is set up test path in the closed described symmetrical network;
Whether the switch that detects on the described test path breaks down.
2, method according to claim 1 is characterized in that, described particular path is already present path in the described symmetrical network, or the path that will set up in described symmetrical network.
3, method according to claim 1 is characterized in that, the described second level crosspoint of choosing specifically comprises:
If described test input mouth is identical with the first order crosspoint at described particular path place, and described test output terminal mouth is identical with the third level crosspoint at described particular path place, and the second level crosspoint of choosing described particular path place is as the described second level crosspoint of choosing.
4, method according to claim 1 is characterized in that, whether the switch on the described test path of described detection breaks down, and specifically comprises:
Send test massage to described test input mouth, judge whether described test output terminal mouth receives described test signal;
If described test output terminal mouth receives described test signal, disconnect the arbitrary switch on the described test path, if described test output terminal mouth still receives described test signal, determine described arbitrary switch short circuit; If described test output terminal mouth does not receive described test signal, determine that described arbitrary switch is normal.
5, a kind of checkout gear of network failure, the symmetrical network that is used for one at least three grades carries out fault detect, it is characterized in that, described at least three grades symmetrical network comprises first order crosspoint, second level crosspoint and third level crosspoint, each grade crosspoint comprises input port, output port and switch, the arbitrary idle input port of arbitrary first order crosspoint is the test input mouth, the arbitrary idle output port of arbitrary third level crosspoint is the test output terminal mouth, and described device comprises:
Memory cell is used to store the state of input port, output port and the switch of described each grade crosspoint;
Search the unit, be used in described memory cell, according to the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at arbitrary particular path place and place, described test input mouth place and described test output terminal mouth place, choose second level crosspoint;
Control unit, be used for first order crosspoint, second level crosspoint, third level crosspoint and described test output terminal mouth according to described test input mouth, the described second level crosspoint of choosing, described particular path place, control the closed corresponding switch of described symmetrical network, set up test path;
Detecting unit, whether the switch that is used to detect on the described test path breaks down.
6, device according to claim 5 is characterized in that, described control unit also is used to control described symmetrical network and sets up described particular path.
7, device according to claim 5 is characterized in that, described memory cell also is used for the testing result according to described detecting unit, upgrades the state of the switch of described each grade crosspoint.
8, device according to claim 5 is characterized in that, described detecting unit specifically comprises:
Signal generating unit links to each other with described test input mouth, is used to generate test signal, sends described signal to described test input mouth;
Signal receiving unit links to each other with described test output terminal mouth, is used to judge whether described test output terminal mouth receives described test signal;
The fault determining unit is used for disconnecting the arbitrary switch on the described test path when described test output terminal mouth receives described test signal, if described test output terminal mouth still receives described test signal, determines described arbitrary switch short circuit; If described test output terminal mouth does not receive described test signal, determine that described arbitrary switch is normal.
9, a kind of detection system of network failure, it is characterized in that, comprise first device and second device, described second device comprises first order crosspoint, second level crosspoint, third level crosspoint at least, each grade crosspoint comprises input port, output port and switch, the arbitrary idle input port of arbitrary first order crosspoint is the test input mouth, and the arbitrary idle output port of arbitrary third level crosspoint is the test output terminal mouth, wherein:
Described first device, be used at described second device, according to the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at arbitrary particular path place and place, described test input mouth place and described test output terminal mouth place, choose second level crosspoint; First order crosspoint, second level crosspoint, third level crosspoint and described test output terminal mouth according to described test input mouth, the described second level crosspoint of choosing, described particular path place, control the closed corresponding switch of described second device, set up test path; Whether the switch that detects on the described test path breaks down.
10, system according to claim 9 is characterized in that, described first device comprises:
Memory cell is used to store the state of input port, output port and switch of each grade crosspoint of described second device;
Search the unit, be used in described memory cell, according to the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at the idle input port of the third level crosspoint at the idle output port of the first order crosspoint at described arbitrary particular path place and place, described test input mouth place and described test output terminal mouth place, choose second level crosspoint;
Control unit, be used for first order crosspoint, second level crosspoint, third level crosspoint and described test output terminal mouth according to described test input mouth, the described second level crosspoint of choosing, described particular path place, control the closed corresponding switch of described second device, set up described test path;
Detecting unit, whether the switch that is used to detect on the described test path breaks down.
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| CN2008101423506A CN101360018B (en) | 2008-08-07 | 2008-08-07 | Network fault detection method, apparatus and system |
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| CN2008101423506A CN101360018B (en) | 2008-08-07 | 2008-08-07 | Network fault detection method, apparatus and system |
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| CN101360018B CN101360018B (en) | 2011-01-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332998A (en) * | 2011-10-28 | 2012-01-25 | 杭州华三通信技术有限公司 | Method, device and system for positioning link fault |
| CN110768851A (en) * | 2019-11-28 | 2020-02-07 | 海丰通航科技有限公司 | Network fault detector and detection method thereof |
| CN112769647A (en) * | 2020-12-31 | 2021-05-07 | 江苏肯立科技股份有限公司 | System and method for realizing non-blocking channel switching of cascade switch matrix |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5754120A (en) * | 1995-12-21 | 1998-05-19 | Lucent Technologies | Network congestion measurement method and apparatus |
| KR20020054207A (en) * | 2000-12-27 | 2002-07-06 | 오길록 | Terabit Packet Switching Apparatus |
| CN1767501A (en) * | 2005-11-28 | 2006-05-03 | 西安邮电学院 | Route selecting method |
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2008
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332998A (en) * | 2011-10-28 | 2012-01-25 | 杭州华三通信技术有限公司 | Method, device and system for positioning link fault |
| CN110768851A (en) * | 2019-11-28 | 2020-02-07 | 海丰通航科技有限公司 | Network fault detector and detection method thereof |
| CN112769647A (en) * | 2020-12-31 | 2021-05-07 | 江苏肯立科技股份有限公司 | System and method for realizing non-blocking channel switching of cascade switch matrix |
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| CN101360018B (en) | 2011-01-05 |
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