CN105049248A - Network state fast detection method of SDH (synchronous digital hierarchy) device - Google Patents
Network state fast detection method of SDH (synchronous digital hierarchy) device Download PDFInfo
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- CN105049248A CN105049248A CN201510400243.9A CN201510400243A CN105049248A CN 105049248 A CN105049248 A CN 105049248A CN 201510400243 A CN201510400243 A CN 201510400243A CN 105049248 A CN105049248 A CN 105049248A
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Abstract
The invention relates to a detection method and in particular a network state fast detection method of an SDH (synchronous digital hierarchy) device. The method includes the following steps that: step 1, a tag is set; step 2, self detection is performed; step 3, self-detection information is reported; step 4, heartbeat information is transmitted; and step 5; whether a port malfunctions is judged, and judgment results are reported, and a device which performs fault judgment is responsible for transmitting information about fault occurrence of the port to a whole network when the port malfunctions. With the network state fast detection method of the invention adopted, the SDH device can autonomously judge a position where a fault occurs in the network, and reports the information about fault occurrence to all equipment in the network, and manual intervention is not needed, and required time is short, and efficiency is high, and misjudgment caused by manual work can be avoided.
Description
Technical field
The invention belongs to detection method, be specifically related to a kind of network fast protection method of SDH equipment.
Background technology
SDH (Synchronous Digital Hierarchy) (SynchronousDigitalHierarchy, SDH) be a kind of multiple connection, line transmission and function of exchange are combined together and have standard interface integrated information transmit network, be that message area is most widely used one of technology in transmission technology.The message structure grade that SDH adopts is called Synchronous Transport Module level-N STM-N (SynchronousTransportModule, N=1,4,16,64), the most basic module is STM-1 (i.e. 155M), and four STM-1 synchronous multiplexings form STM-4 (i.e. 622M), and 16 STM-1 or four STM-4 synchronous multiplexings form STM-16 (i.e. 2.5G).
SDH (Synchronous Digital Hierarchy) has following characteristics:
A) more than STM-1 grade, unify the large digital hierarchy of 1.5Mbit/s and 2Mbit/s two, really achieve the worldwide standard in Digital Transmission system first;
B) have employed synchronous multiplexing mode and multiplex mapping structure flexibly, only need utilize software that high speed signal can be made once directly to divide and insert out low speed tributary signal;
C) devise abundant overhead-bits in SDH frame structure, enhance the fault-detecting ability of network;
D) decrease transmission and the multiplexing needs separated, simplify hardware, alleviate wiring crowded;
E) have the transparency of information payload, network can transmit various net load and mixture thereof;
F) have timing transparent, SDH is as Synchronization Network work, and network element is connected to high precision reference clock, can reduce and adjusts frequency and improve network performance;
G) network availability and error performance is improved.
SDH network and existing network can be completely compatible, and the SDH optical transmission device meeting military standard has the features such as adaptive capacity to environment is strong, reliability is high, volume is little, transmission capacity is large, business interface is abundant, long transmission distance, security performance are good, electromagnetism interference.
Existing SDH equipment is transparent transmission equipment, only provides data retransmission function, does not possess the detection of network failure position, location and reporting functions.Therefore, when a network fails, staff can only see that network cannot normal transmission signal, and cannot know that fault appears on which equipment or which transmission link.Above-mentioned location of fault to be located in conventional art, need professional to use special Network Fault Detection equipment to carry out a large amount of data tests, record and screening and just can complete.This way at substantial manpower and materials, inefficiency, and also many owing to artificially participating in composition, the fault point erroneous judgement situation that artificial origin also may be caused to cause.
Summary of the invention
The present invention is directed to the defect of prior art, a kind of network fast protection method of SDH equipment is provided.
The present invention is achieved in that a kind of network state method for quick of SDH equipment, wherein, comprises the steps:
Step one: setting label
To each ports-settings label of each equipment, these labels are gathered in a form, and send to each equipment in network,
Step 2: self-inspection
Every platform equipment self-inspection, checks that self each port is whether normal, if port can normal transmission signal, is then set to " transparent transmission " by label corresponding for these ports, if port cannot normal transmission signal, is then set to " the unknown " by label corresponding for these ports,
Step 3: self-inspection information reporting
By self-inspection information reporting network, the label form that every platform equipment retains according to this equipment of information updating received,
Step 4: send heartbeat message
Every platform equipment all sends heartbeat message to network by each normal port, and this heartbeat message refers to specific field, and the miscellaneous equipment in network receives this field information at special time, illustrates that the port sending this heartbeat message is normal,
Step 5: judge port whether fault, and report
If continuous three cycles do not receive the heartbeat message that particular port sends, then judge that this port breaks down, after having judged by tag update corresponding for non-working port as " the unknown ",
When judging certain port failure, the equipment carrying out breakdown judge is responsible for sending to whole network the information that this port produces fault.
The network state method for quick of a kind of SDH equipment as above, wherein, the transmission cycle of the heartbeat message described in step 4 is 128 microseconds.
Remarkable result of the present invention is: by the method for the application, and SDH equipment independently can judge the position that in network, fault produces, and device reports all in network, without the need to manual intervention, required time is short, and efficiency is high, avoids the erroneous judgement that manually may cause.
Embodiment
A network state method for quick for SDH equipment, comprises the steps:
Step one: setting label
To each ports-settings label of each equipment, these labels are gathered in a form, and send to each equipment in network.
Step 2: self-inspection
Every platform equipment self-inspection, checks that self each port is whether normal, if port can normal transmission signal, is then set to " transparent transmission " by label corresponding for these ports, if port cannot normal transmission signal, is then set to " the unknown " by label corresponding for these ports.
Step 3: self-inspection information reporting
By self-inspection information reporting network, the label form that every platform equipment retains according to this equipment of information updating received.
Now, the every platform equipment in network all can judge, under self-inspection performance, and the fine or not situation of all of the port in network.
Step 4: send heartbeat message
Every platform equipment all sends heartbeat message to network by each normal port.This heartbeat message refers to specific field, and the miscellaneous equipment in network receives this field information at special time, illustrates that the port sending this heartbeat message is normal.
The transmission cycle of heartbeat message is generally 128 microseconds.
Step 5: judge port whether fault, and report
If continuous three cycles do not receive the heartbeat message that particular port sends, then judge that this port breaks down, after having judged by tag update corresponding for non-working port as " the unknown ".
When judging certain port failure, the equipment carrying out breakdown judge is responsible for sending to whole network the information that this port produces fault.
Claims (2)
1. a network state method for quick for SDH equipment, is characterized in that, comprise the steps:
Step one: setting label
To each ports-settings label of each equipment, these labels are gathered in a form, and send to each equipment in network,
Step 2: self-inspection
Every platform equipment self-inspection, checks that self each port is whether normal, if port can normal transmission signal, is then set to " transparent transmission " by label corresponding for these ports, if port cannot normal transmission signal, is then set to " the unknown " by label corresponding for these ports,
Step 3: self-inspection information reporting
By self-inspection information reporting network, the label form that every platform equipment retains according to this equipment of information updating received,
Step 4: send heartbeat message
Every platform equipment all sends heartbeat message to network by each normal port, and this heartbeat message refers to specific field, and the miscellaneous equipment in network receives this field information at special time, illustrates that the port sending this heartbeat message is normal,
Step 5: judge port whether fault, and report
If continuous three cycles do not receive the heartbeat message that particular port sends, then judge that this port breaks down, after having judged by tag update corresponding for non-working port as " the unknown ",
When judging certain port failure, the equipment carrying out breakdown judge is responsible for sending to whole network the information that this port produces fault.
2. the network state method for quick of a kind of SDH equipment as claimed in claim 1, is characterized in that: the transmission cycle of the heartbeat message described in step 4 is 128 microseconds.。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510400243.9A CN105049248A (en) | 2015-07-09 | 2015-07-09 | Network state fast detection method of SDH (synchronous digital hierarchy) device |
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| CN201510400243.9A CN105049248A (en) | 2015-07-09 | 2015-07-09 | Network state fast detection method of SDH (synchronous digital hierarchy) device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108429720A (en) * | 2017-02-15 | 2018-08-21 | 卡斯柯信号有限公司 | The method for protecting towards railway security communication protocol based on digital signature |
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Application publication date: 20151111 |