CN109889257A - A method of realizing that business is two-way disconnected based on OTN expense - Google Patents
A method of realizing that business is two-way disconnected based on OTN expense Download PDFInfo
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- CN109889257A CN109889257A CN201910008162.2A CN201910008162A CN109889257A CN 109889257 A CN109889257 A CN 109889257A CN 201910008162 A CN201910008162 A CN 201910008162A CN 109889257 A CN109889257 A CN 109889257A
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Abstract
The two-way disconnected method of business is realized based on OTN expense the invention discloses a kind of, comprising: real-time monitoring service signal mass defect；The board of upstream bearer service inserts corresponding defect state information according to the service signal mass defect real-time monitored, according to G.709 agreement in the APS byte of business；Wherein, defect state information includes service signal mass defect state and without business signal quality defect state；The board detection of downstream bearing business receives the corresponding defect state information of APS byte of positive business, the laser of corresponding downstream traffic port is turned off or opened according to defect state information, and insertion and the consistent defect state information of positive business in the APS byte of reverse traffic；The board detection of upstream bearer service receives the defect state information of the APS byte of reverse traffic, turns off or open the laser that upstream corresponds to service port according to defect state information.Fault detection approach of the present invention is quick and easy, it is easy to accomplish, high reliablity, and also it is easy to maintain.
Description
Technical field
The present invention relates to technical field of photo communication, and in particular to a method of realize that business is two-way disconnected based on OTN expense.
Background technique
OTN (Optical Transport Network, optical transfer network) equipment and SDH (Synchronous Digital
Hierarchy, synchronous digital system), PTN (Packet Transport Network, Packet Transport Network), the clients such as router
When side apparatus intercommunication, it is desirable that the business of upper and lower words both direction walks same paths, and this requires the business appearance when a direction
When failure, OTN equipment needs to guarantee that the business in another direction can also be cut off simultaneously with client-side device.
In existing net, there are FE (Fast Ethernet, 100 m ethernet), GE (Giga Bit Ethernet, gigabit with
Too network interface), a variety of little particle business such as 1GFC (1G Fibre Channel, 1G fiber channel), in addition to the ODU0 (light of standard
Access data cell ODUk, wherein k=0) other than mapping, the equipment there is also other mapping modes are largely used, for example (,) it is logical
It crosses GFP (Generic Framing Procedure, Generic Framing Procedure) agreement and directly encapsulates and be mapped to OPU1 (optical channel is net
Lotus unit OPUk, wherein k=1) branch channel time slot in, re-map and be multiplexed into ODU1 channel signal, the alarm of the expense of ODU1 can not
The state for indicating a certain little particle business that ODU1 includes can not trigger industry when this little particle business breaks down
Business bidirectional cutting.
In conclusion needing to propose a kind of unification for existing status net small particles business a variety of mapped modes and deposited
, the simple and easy two-way disconnected scheme of business to guarantee that the little particle business of any rank breaks down it is double can to trigger business
To cutting.
Summary of the invention
It is existing online the technical problem to be solved by the present invention is to be compatible with simultaneously for existing service protecting method
A variety of mapping modes of multiple business need to design a kind of two-way disconnected scheme for effectively reducing cost, being easily achieved, to guarantee to appoint
The problem of little particle business of what rank breaks down, and can trigger business bidirectional cutting.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that providing a kind of based on the realization of OTN expense
The two-way disconnected method of business, comprising the following steps:
Step S101, real-time monitoring service signal mass defect；
Step S102, the board of upstream bearer service is according to the service signal mass defect real-time monitored, according to G.709
Agreement inserts corresponding defect state information in the APS byte of business；
Wherein, defect state information includes service signal mass defect state and without business signal quality defect state；
Step S103, the board detection of downstream bearing business receives the corresponding defect state letter of APS byte of positive business
Breath turns off or opens the laser of corresponding downstream traffic port according to defect state information, and in the APS byte of reverse traffic
Middle insertion and the consistent defect state information of positive business；
Step S104, the board detection of upstream bearer service receives the defect state information of the APS byte of reverse traffic, root
The laser that upstream corresponds to service port is turned off or opened according to defect state information.
In the above-mentioned methods, the service signal mass defect includes Signal Fail alarm SF and the signal in OTN expense
Deterioration alarm SD.
In the above-mentioned methods, it when having monitored service signal mass defect, is filled in the APS byte of positive business
Service signal mass defect state；
After all service signal mass defects monitored disappear, filling is without business in the APS byte of positive business
Signal quality defect state；
In the above-mentioned methods, when a plurality of different business is mapped into the same ODU1, the defect state letter of every business
Breath occupies time slot a TSi, each time slot TSi and occupies the 2bit of APS byte.
In the above-mentioned methods, the APS byte includes 4 bytes；
First four of 1st byte are top layer request or state byte, reflect condition, order or the shape of protection priority
State；Latter four of 1st byte are protection type-byte, are unidirectional protection or bidirectional protective；
2nd byte to the 4th byte is defect state information solicitation byte, and the APS byte of each ODUk supplies 12 time slot TSi
It uses, fills in the defect state information of 12 business.
In the above-mentioned methods, if the board of downstream bearing business detects the defect state of the APS byte of positive business
Information is to have service signal mass defect state, by the laser shutdown of corresponding downstream traffic port, and in reverse traffic
Inserted with service signal mass defect state in APS byte；
If the board of downstream bearing business detects that the defect state information of the APS byte of positive business is believed for no business
The laser of corresponding downstream traffic port is opened, and is inserted into nothing in the APS byte of reverse traffic by number mass defect state
Service signal mass defect state.
In the above-mentioned methods, if the board of upstream bearer service detects the defect state of the APS byte of reverse traffic
Information is to have service signal mass defect state, by the laser shutdown of the corresponding service port in upstream；
If the board of upstream bearer service detects that the defect state information of the APS byte of reverse traffic is believed for no business
Number mass defect state opens the laser of the corresponding service port in upstream.
In the above-mentioned methods, different value is respectively adopted in positive business and the corresponding A PS byte of reverse traffic indicates
Service signal mass defect state.
In the above-mentioned methods, if positive traffic table is shown with the O1 that is set to of service signal mass defect state, indicate unemployed
Business signal quality defect state is 00；What reverse traffic indicated service signal mass defect state is set to 11, indicates no business
Signal quality defect state is 00；
Then when this website detect positive business APS byte correspond to time slot TSi value be 01 when, will be in opposite direction business
APS byte in the position corresponding time slot TSi filling 11；When this website detects the corresponding time slot of APS byte of positive business
When TSi value is 00, identical value 00 is inserted in the position corresponding time slot TSi in the APS byte of reverse traffic.
Compared with prior art, the present invention is by the service signal mass defect that arrives upstream detection, with status information
Mode is inserted into APS byte, then determines whether upstream service signal mass defect occurs by detecting APS byte in downstream, and
When there is service signal mass defect, shutdown downstream corresponds to the laser of service port, while in APS byte Insert service signal
After mass defect status information, upstream is returned to, triggering upstream turns off the laser of corresponding service port, only needs upstream plate in this way
Card business port mapping direction can detect service signal mass defect, even if there are multiple business type, multiple business to map
Packaged type, as long as the APS byte status information in downstream traffic board demapping direction detection ODU1, so that it may on judging
Whether trip board business has service signal mass defect, and then two-way disconnected come finishing service by closing laser, is suitable for a variety of
The multiple packing forms of business are encapsulated into an ODU1, fault detection approach especially for the mapping of a variety of little particle business
It is quick and easy, it is easy to accomplish, low cost, high reliablity, and also it is easy to maintain.
Detailed description of the invention
Fig. 1 is a kind of flow chart that the two-way disconnected method of business is realized based on OTN expense provided by the invention；
Fig. 2 is the schematic diagram that multiple business uses a variety of encapsulation in the present invention；
Fig. 3 is the two-way disconnected schematic diagram of business of the invention；
Fig. 4 is the APS byte structure schematic diagram in the present invention.
Specific embodiment
The present invention provides a kind of two-way disconnected methods for effectively reducing cost, being easily achieved, and can effectively improve equipment
Stability, and it is convenient for safeguarding.The present invention is described in detail with specific embodiment with reference to the accompanying drawings of the specification.
As shown in Figure 1, provided by the invention a kind of based on the OTN expense realization two-way disconnected method of business, including following step
It is rapid:
Step S101, real-time monitoring service signal mass defect, i.e., SF (Signal Fail) in real-time monitoring OTN expense and
SD (Signal Degrade) alarm；
Step S102, the board of upstream bearer service is according to the service signal mass defect real-time monitored, according to G.709
Agreement corresponding defect state information of filling in corresponding APS byte (automatic protection switching access byte), is sent to downstream
The board of bearer service.
Wherein, defect state information includes service signal mass defect state and without business signal quality defect state；
When having monitored service signal mass defect, service signal quality is filled in the APS byte of positive business
Defect state；
After all service signal mass defects monitored disappear, filling is without business in the APS byte of positive business
Signal quality defect state；
Fig. 2 is the schematic diagram that multiple business uses a variety of encapsulation in the present invention, as shown in Fig. 2, a plurality of different business can
To be mapped into the same ODU1, the defect state information of every business occupies time slot a TSi, each time slot TSi and occupies APS word
The 2bit of section.
For Fig. 3 to be provided by the invention a kind of based on the OTN expense realization two-way disconnected schematic diagram of business, Fig. 4 is in the present invention
APS byte structure schematic diagram.As shown in Figure 3, Figure 4, totally 4 bytes, first four of the 1st byte are top layer to an APS byte
Request or state byte reflect condition, order or the state of protection priority；Latter four of 1st byte are protection type
Byte, protection type includes unidirectional protection and bidirectional protective；2nd byte to the 4th byte is defect state information solicitation byte, by
A time slot TSi is occupied in the defect state information of every business, and each time slot TSi occupies 2bit, ODUk's each in this way
APS byte can use (the defect state information that can fill in 12 business) for 12 time slot TSi, work as OTU
The service port of (Optical Channel Transport Unit, optical channel transmission unit) business board A detect SF or
When the service signals mass defects such as person SD alarm, service signal mass defect is filled in the position APS byte corresponding time slot TSi
State 01；It is corresponding in APS byte when service port does not detect the service signals mass defects such as SF or SD alarm
TSi time slot position is inserted without business signal quality defect state 00.
Step S103, the board detection of downstream bearing business receives the defect state information of the APS byte of positive business,
The laser of corresponding downstream traffic port is turned off or opened according to defect state information, and in the APS byte of reverse traffic
Insertion and the consistent defect state information of positive business, are sent to the board of upstream bearer service；
If the board of downstream bearing business detects that the defect state information of the APS byte of positive business is to have business letter
Number mass defect state, illustrates business existing defects, by the laser shutdown of corresponding downstream traffic port, so that with this board
The device port service disconnection of service port docking, meanwhile, according to the defect state information of APS byte that detection receives,
It is inserted into identical defect state information in reverse traffic APS byte, that is, has service signal mass defect state；
If the board of downstream bearing business detects that the defect state information of the APS byte of positive business is believed for no business
Number mass defect state, illustrates that business is normal, and the laser of corresponding downstream traffic port is opened, and is received according to detection
APS byte defect state information, identical defect state information is inserted into the APS byte of reverse traffic, i.e., without business believe
Number mass defect state.
As shown in Figure 3, Figure 4, the defect state information for the APS byte that downstream OTU business board B detection receives, if
The value of corresponding time slot TSi is 01, and defect state information is to have service signal mass defect state, indicates that upstream business port exists
Alarm, while positive laser shutdown function is active, then the corresponding business of the board of downstream bearing business will
Turn off laser.In addition, being positive business by the business of the board downstream board transmission of bearer service of upstream bearer service；
Business by the board upstream board transmission of bearer service of downstream bearing business is reverse traffic；To distinguish forward and reverse industry
The defect state information of business indicates service signal mass defect state using different value in two directions, for example, working as our station
Point detect the APS byte of reception business correspond to time slot TSi value be 01 when, be expressed as service signal mass defect state,
The website position corresponding time slot TSi filling can indicate service signal mass defect in the APS byte of its opposite direction business
The value 11 of state；When this website detect reception business APS byte correspond to time slot TSi value be 00 when, be expressed as no business
Signal quality defect state, the website can in the APS byte of its opposite direction business the position corresponding time slot TSi filling it is identical
Value 00.
Step S104, the defect state letter of the APS byte for the reverse traffic that the board detection of upstream bearer service receives
Breath turns off or opens the laser that upstream corresponds to service port according to defect state information, so that with this plate service port pair
The device port service disconnection connect or recovery.
If the board of upstream bearer service detects that the defect state information of the APS byte of reverse traffic is to have business letter
Number mass defect state, then by the laser shutdown of the corresponding service port in upstream, so that being set with what this plate service port docked
Standby port traffic is interrupted；
If the board of upstream bearer service detects that the defect state information of the APS byte of reverse traffic is believed for no business
Number mass defect state then opens the laser of the corresponding service port in upstream, so that entire service channel restores normal work
Make.
As shown in Figure 3, Figure 4, the APS byte defect state letter for the reverse traffic that upstream OTU business board A detection receives
Breath, if the value of corresponding time slot TSi is 11, meanwhile, return laser turn-off function is active, then upstream OTU industry
The corresponding business of business board A turns off laser, so that both direction is corresponded to service port laser by above step in this way
Device is turned off, and realizes the service of connection devices service disconnection to complete entire business switching action.
Packaged type is mapped for different business, is encapsulated into an ODU1 especially for the mapping of a variety of little particle business
In, the business processing chip as used in certain OTU equipment can not detect service signal mass defect in demapping direction,
Lead to not trigger corresponding service port laser shutdown.And upstream plate card business port mapping direction energy is only needed in the present invention
Service signal mass defect is detected, even if there are multiple business type, multiple business to map packaged type, downstream traffic board
As long as the APS byte status information in ODU1 is detected in demapping direction, so that it may judge whether upstream plate card business has business
Signal quality defect, so it is two-way disconnected come finishing service by closing laser.
The invention is not limited to above-mentioned preferred forms, and anyone should learn that is made under the inspiration of the present invention
Structure change, the technical schemes that are same or similar to the present invention are fallen within the scope of protection of the present invention.
Claims (9)
1. a kind of realize the two-way disconnected method of business based on OTN expense, which comprises the following steps:
Step S101, real-time monitoring service signal mass defect；
Step S102, the board of upstream bearer service is according to the service signal mass defect real-time monitored, according to G.709 agreement
Corresponding defect state information is inserted in the APS byte of business；
Wherein, defect state information includes service signal mass defect state and without business signal quality defect state；
Step S103, the board detection of downstream bearing business receives the corresponding defect state information of APS byte of positive business, root
The laser of corresponding downstream traffic port is turned off or opened according to defect state information, and is inserted in the APS byte of reverse traffic
Enter and the consistent defect state information of positive business；
Step S104, the board detection of upstream bearer service receives the defect state information of the APS byte of reverse traffic, according to scarce
It falls into status information shutdown or opens the laser that upstream corresponds to service port.
2. according to claim 1 a kind of based on the OTN expense realization two-way disconnected method of business, which is characterized in that described
Service signal mass defect includes Signal Fail alarm SF and Signal Degrade alarm SD in OTN expense.
3. according to claim 1 a kind of based on the OTN expense realization two-way disconnected method of business, which is characterized in that work as prison
When having measured service signal mass defect, service signal mass defect state is filled in the APS byte of positive business；
After all service signal mass defects monitored disappear, filling is without service signal in the APS byte of positive business
Mass defect state.
4. according to claim 3 a kind of based on the OTN expense realization two-way disconnected method of business, which is characterized in that when more
When the different business of item is mapped into the same ODU1, the defect state information of every business occupies a time slot TSi, each time slot
The 2bit of TSi occupancy APS byte.
5. according to claim 4 a kind of based on the OTN expense realization two-way disconnected method of business, which is characterized in that described
APS byte includes 4 bytes；
First four of 1st byte are top layer request or state byte, reflect condition, order or the state of protection priority；
Latter four of 1st byte are protection type-byte, are unidirectional protection or bidirectional protective；
2nd byte to the 4th byte is defect state information solicitation byte, and the APS byte of each ODUk makes for 12 time slot TSi
With filling in the defect state information of 12 business.
6. according to claim 5 a kind of based on the OTN expense realization two-way disconnected method of business, which is characterized in that if
The board of downstream bearing business detects that the defect state information of the APS byte of positive business is to have service signal mass defect shape
State, by the laser shutdown of corresponding downstream traffic port, and inserted with service signal quality in the APS byte of reverse traffic
Defect state；
If the board of downstream bearing business detects the defect state information of the APS byte of positive business for no service signal matter
Defect state is measured, the laser of corresponding downstream traffic port is opened, and is inserted into the APS byte of reverse traffic without business
Signal quality defect state.
7. according to claim 3 a kind of based on the OTN expense realization two-way disconnected method of business, which is characterized in that if
The board of upstream bearer service detects that the defect state information of the APS byte of reverse traffic is to have service signal mass defect shape
State, by the laser shutdown of the corresponding service port in upstream；
If the board of upstream bearer service detects the defect state information of the APS byte of reverse traffic for no service signal matter
Defect state is measured, the laser of the corresponding service port in upstream is opened.
8. according to claim 6 a kind of based on the OTN expense realization two-way disconnected method of business, which is characterized in that just
Different value, which is respectively adopted, in business and the corresponding A PS byte of reverse traffic indicates service signal mass defect state.
9. according to claim 8 a kind of based on the OTN expense realization two-way disconnected method of business, which is characterized in that if
What positive traffic table was shown with service signal mass defect state is set to O1, indicates that no business signal quality defect state is 00；Instead
Be shown with service signal mass defect state to traffic table is set to 11, indicates that no business signal quality defect state is 00；
Then when this website detect positive business APS byte correspond to time slot TSi value be 01 when, will be in opposite direction business
The position corresponding time slot TSi filling 11 in APS byte；When this website detects the corresponding time slot TSi of APS byte of positive business
When value is 00, identical value 00 is inserted in the position corresponding time slot TSi in the APS byte of reverse traffic.
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| CN201910008162.2A CN109889257B (en) | 2019-01-04 | 2019-01-04 | Method for realizing service bidirectional interruption based on OTN overhead |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910008162.2A CN109889257B (en) | 2019-01-04 | 2019-01-04 | Method for realizing service bidirectional interruption based on OTN overhead |
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| CN109889257A true CN109889257A (en) | 2019-06-14 |
| CN109889257B CN109889257B (en) | 2020-05-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113114406A (en) * | 2021-03-11 | 2021-07-13 | 烽火通信科技股份有限公司 | Method, device, equipment and storage medium for preventing deadlock of OTN optical channel protection |
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| CN101944950A (en) * | 2009-07-06 | 2011-01-12 | 中兴通讯股份有限公司 | Processing method and device for loading extra service in optical transport network (OTN) |
| US9313563B1 (en) * | 2012-08-31 | 2016-04-12 | Pmc-Sierra Us, Inc. | System and method for network switching |
| CN103746738B (en) * | 2014-01-10 | 2016-06-22 | 烽火通信科技股份有限公司 | Gfp frame transmits the method realizing two-way disconnected business |
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Patent Citations (5)
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|---|---|---|---|---|
| CN1983931A (en) * | 2006-04-05 | 2007-06-20 | 华为技术有限公司 | Method and system for transmitting fault information in light network |
| CN101944950A (en) * | 2009-07-06 | 2011-01-12 | 中兴通讯股份有限公司 | Processing method and device for loading extra service in optical transport network (OTN) |
| CN101848035A (en) * | 2010-06-03 | 2010-09-29 | 中兴通讯股份有限公司 | Method, system and node device of shared protection in OTN (Optical Transport Network) network |
| US9313563B1 (en) * | 2012-08-31 | 2016-04-12 | Pmc-Sierra Us, Inc. | System and method for network switching |
| CN103746738B (en) * | 2014-01-10 | 2016-06-22 | 烽火通信科技股份有限公司 | Gfp frame transmits the method realizing two-way disconnected business |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113114406A (en) * | 2021-03-11 | 2021-07-13 | 烽火通信科技股份有限公司 | Method, device, equipment and storage medium for preventing deadlock of OTN optical channel protection |
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