CN105282631A - System and method for realizing electrical layer linear protection in POTN - Google Patents
System and method for realizing electrical layer linear protection in POTN Download PDFInfo
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Abstract
The invention relates to a system and method for realizing electrical layer linear protection in POTN, relating to the POTN field. A business mapping unit of a source end converts ODUk channel data into a group of cells through cell segmentation, a multicast ID is distributed, the cells are subjected to concurrence or selection at work and protection light channel units through a cell switching unit, and after the cells are received by the work and protection light channel units, the cells are selectively activated and are sent to the corresponding cell reception ports; after the work and protection light channel units of a destination end receive signals, the de-mapping and de-multiplexing of ODUk is completed, the cells are sent out via the corresponding channels, a system cross is established to point to the business mapping unit; and the signal failure, signal deterioration, and APS overhead information are detected, an APS control unit notifies the current needed light channel units to activate the cross and non-needed light channel units to block the cross. The ODUk electrical layer linear protection is realized under the unified cell exchange configuration of POTN, and the high effectiveness and the reliability are guaranteed.
Description
Technical field
The present invention relates to POTN (PacketenhancedOpticalTransportNetwork, grouping enhancement mode optical transfer network) field, specifically relate in POTN the system and method realizing electric layer linear protection.
Background technology
Tradition OTN (OpticalTransportNetwork, optical transfer network) equipment, generally completes the scheduling of ODUk (containing ODU0/1/2/2e/3/4) based on time-division and the empty cross unit divided.On this basis, the ODUk electric layer linear protection needed for OTN network, controls the mode of time-division, space division cross with cross unit, realizes concurrent or publishes, selects receipts.
A new generation POTN, as grouping enhancement mode OTN equipment, for realizing the United Dispatching of ODUk and Packet Service, adopts cell switching core to instead of traditional time-division, space division cross.The principle that core cross unit exchanges has changed, but first POTN needs the function of the traditional OTN realized, and the electric layer linear protection of the ODUk needed for OTN equipment is still the basic function of network security reliability service.
Original centralized architecture for exchanging, controls cross-connection system by pure cross unit, realizes APS (AutomaticProtectionSwitch; APS); adopt centralized processing method, multiple services switching action needs order performs, and affects switching time.But the unified cell switching framework of POTN is distributed switching architecture, and under this architecture for exchanging, said method is no longer applicable.
Therefore, the electric layer linear protection of ODUk needs a kind of new mode to ensure efficiently with reliable.
Summary of the invention
For the defect existed in prior art, the object of the present invention is to provide the system and method realizing electric layer linear protection in a kind of POTN, under the unified cell switching framework of POTN, realize ODUk electric layer linear protection, ensure high efficiency and reliability.
For reaching above object, the present invention takes the system realizing electric layer linear protection in POTN, comprise source and egress, source and egress include business map unit, cell switching unit, APS control unit and comprise the work light channel unit of work optical channel, comprise protection optical channel protection light channel unit, wherein business map unit, for completing client traffic after the mapping of ODUk business, ODUk channel data is converted to one group of cell, distributes a multicast ID and send to cell switching unit; Also for accepting the cell that cell crosspoint sends over, be ODUk data by cell reassemble; Cell switching unit, storage inside multicast forwarding, for identifying the cell with multicast ID, searches corresponding destination address by multicast forwarding, and the cell sent with this multicast ID is to all links; Also for automatically forwarding the message of work light channel unit and protection light channel unit according to clean culture ID to business map unit; APS control unit, for the Signal Fail, Signal Degrade and the APS Overhead that receive work light channel unit and protect light channel unit to transmit, decision-making goes out the current work optical channel needing to activate and block and protection optical channel; Work light channel unit and protection light channel unit, receive the cell with multicast ID respectively, and selectively activate, be sent to corresponding cell reception port; Also for receiving the business that optical fiber transmits, completing cell cutting after the demapping demultiplexing of ODUk, sending from respective channel, set up set of system and intersect, point to business map unit.
The present invention also provides in a kind of POTN and realizes electric layer Linear protection method, comprise: the business map unit of source receives client traffic after the mapping of ODUk business, by cell cutting, ODUk channel data is converted to one group of cell, and distribute a multicast ID, by the multicast forwarding in cell switching unit, cell is carried out concurrent in work light channel unit and protection light channel unit or published, after work light channel unit and protection light channel unit receive the cell with multicast ID, according to current protect types, in conjunction with the control information of APS control unit, selected to activate, the cell activated is sent to corresponding cell reception port, re-send to Optical Fiber Transmission, after the work light channel unit of egress and protection light channel unit receive the signal of Optical Fiber Transmission, complete the demapping demultiplexing of ODUk, ODUk is done cell cutting, the passage of cell from correspondence is sent, and set up a system transposition, point to business map unit, meanwhile, detect Signal Fail, Signal Degrade and APS Overhead, issue APS control unit, the light channel unit of current needs that notifies APS control unit activates it and intersects, and unwanted light channel unit blocks its intersection simultaneously.
On the basis of technique scheme, in ODUk1+1 protection, need the cell of ODUk to carry out concurrent in work light channel unit and protection light channel unit; In ODUk1:1 protection, need the cell of ODUk to publish in work light channel unit and protection light channel unit.
On the basis of technique scheme, ODUk carries out concurrent in work light channel unit and protection light channel unit, the mode of cell multicast is adopted to realize, when the work light channel unit of multicast and the line port at protection light channel unit place are at different slot board, the mode of cell switching unit multicast is adopted to realize; When the work light channel unit of multicast relates to the different time-gap of the different port of same slot board or same line port; except complete the multicast of the different slot of one-level at cell switching unit except; in work light channel unit with on the circuit board at protection light channel unit place, also secondary multicast need be carried out for different port or different ODUk time slot.
On the basis of technique scheme; described secondary multicast is specially; the cell of multicast ID is copied in work light channel unit and protection light channel unit and is distributed to different cell process; recombinated by different cell processing units; restore the data of the identical ODUk of two-way, be sent on OTUk line interface at different port or time slot.
On the basis of technique scheme; described work light channel unit and protection light channel unit adopt packet with VLANID and APS control unit transmission of information respectively; comprise SF/SD, APS and the control information of protection light channel unit; APS control unit only carries out switching control based on VLANID, realizes the dynamic mapping between VLANID and slot, port, ODUk time slot.
On the basis of technique scheme, described multicast forwarding is for each multicast ID, to there being corresponding multicast destination address, cell switching unit is according to the different multicast ID received, search the destination address of corresponding this multicast ID, and judge the high-speed data physical link that destination address is corresponding, by all cells with this multicast ID, each cell is forwarded on all physical links.
Beneficial effect of the present invention is:
1, realize the system of electric layer linear protection in POTN of the present invention, 1+1 and the 1:1 pretection switch functional realiey of ODUk is normal, under the unified cell switching framework of POTN, realize ODUk electric layer linear protection, ensures high efficiency and reliability.
2, through first blocking the mode activated afterwards, the Key Performance Indicator of pretection switch, that is, switch break period is greater than 50ms requirement much smaller than the break period that international standard defines, performance increases.
3, the present invention does not need to drop into extra hardware resource; adopt the program circuit of existing software platform, APS control unit in embedded system control unit, can use the ethernet communication passage between common unit and business unit; save equipment cost, simplify design protection.
Accompanying drawing explanation
Fig. 1 realizes making a start in the system of electric layer linear protection schematic diagram in example POTN of the present invention;
Fig. 2 is receiving end schematic diagram in the system realizing electric layer linear protection in embodiment of the present invention POTN.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As depicted in figs. 1 and 2, the system of electric layer linear protection is realized in POTN of the present invention, comprise source and egress, protection light channel unit a4 and APS control unit a5 that source comprises business map unit a1, cell switching unit a2, has the work light channel unit a3 of work optical channel, has protection optical channel; Protection light channel unit b4, APS control unit b5 that egress comprises business map unit b1, cell switching unit b2, has the work light channel unit b3 of protection optical channel, has protection optical channel; Source and egress are identical network element; therefore label use a, b to enter new differentiation; in the present embodiment; work light channel unit has a work optical channel; protection light channel unit has a protection optical channel, and work light channel unit can also have many work optical channels, or protection light channel unit can also have many protection optical channels; but communication mode is constant, just passage number change.Wherein,
Business map unit (a1, b1), for completing client traffic after the mapping of ODUk business, being converted to one group of cell, distributing a multicast ID and send to cell switching unit by ODUk channel data; Also for accepting the cell that cell crosspoint sends over, be ODUk data by cell reassemble.
Cell switching unit (a2, b2), storage inside multicast forwarding, for identifying the cell with multicast ID, searches corresponding destination address by multicast forwarding, and the cell sent with this multicast ID is to all links; Also for according to the message of clean culture ID (Ch-ID) automatically forwarding work light channel unit and protection light channel unit to business map unit.
APS control unit (a5, b5), for the Signal Fail, Signal Degrade and the APS Overhead that receive work light channel unit and protect light channel unit to transmit, decision-making goes out the current work optical channel needing to activate and block and protection optical channel.Information mutual communication between APS control unit (a5, b5) and primary light channel unit, spare optical channel unit adopts Ethernet mode, according to the slot+ODUk time slot of primary and backup light channel unit, is uniquely mapped to a VLAN_ID.
Work light channel unit (a3, b3) and protection light channel unit (a4, b4), receive the cell with multicast ID respectively, simultaneously or selectively activate, and is sent to the cell reception port of correspondence; Also for receiving the business that optical fiber transmits, completing cell cutting after the demapping demultiplexing of ODUk, sending from respective channel, set up set of system and intersect, point to business map unit.
Realize the method for electric layer linear protection in POTN of the present invention, specifically comprise:
As shown in Figure 1, in source, business map unit a1 and client traffic interface, and receive client traffic after the mapping of ODUk business, by the mode of cell cutting, ODUk channel data is converted to one group of cell.Due in ODUk1+1 protection, need ODUk to carry out concurrent at work light channel unit a3 and protection light channel unit a4; In ODUk1:1 protection, need ODUk to publish at work light channel unit a3 and protection light channel unit a4.ODUk carries out concurrent at work light channel unit a3 and protection light channel unit a4, the mode of cell multicast is adopted to realize, when the work light channel unit a3 of multicast and the line port at protection light channel unit a4 place are at different slot board, the mode of cell switching unit multicast is adopted to realize; When the work light channel unit of multicast relates to the different time-gap of the different port of same slot board or same line port; except complete the multicast of the different slot of one-level at cell switching unit except; in work light channel unit with on the circuit board at protection light channel unit place, also secondary multicast need be carried out for different port or different ODUk time slot.
Concrete, often organize protected cell, before business map unit a1 sends to cell switching unit a2, by global assignment multicast ID, this multicast ID is carried at cell of data head by this group cell, mails to cell switching unit a2 with data.In cell switching unit a2, according to the relaying configuration of business actual needs, store a multicast forwarding, multicast forwarding, for each multicast ID (MC-ID), to there being corresponding multicast destination address.Such as MC-ID:SlotA, SlotB, represent the cell of this multicast ID, and its destination has two, and one is the SlotA that work light channel unit a3 is corresponding, and one is the SlotB that protection light channel unit a4 is corresponding; According to multicast forwarding, cell switching unit a2 receives different multicast ID, search the destination address of corresponding this multicast ID, cell switching unit, according to the different multicast ID received, is searched the destination address of corresponding this multicast ID, and is judged the high-speed data physical link that destination address is corresponding, by all cells with this multicast ID, each cell is forwarded on all physical links, can arrive object slot, and namely work light channel unit a3 and protect light channel unit a4.
Described secondary multicast is specially; being copied in work light channel unit and protection light channel unit by the cell of multicast ID is distributed in different cell process; there is different cell process restructuring, restore the data of the identical ODUk of two-way, be sent on OTUk line interface at different port or time slot.
After work light channel unit a3 and protection light channel unit a4 have received these cells with specific multicast ID, according to current protect types, in conjunction with the control information of APS control unit, cell with specific multicast ID is selectively activated, the cell activated can be sent on corresponding cell reception port, completes the restructuring of ODUk; That is, by the cell with specific multicast ID, correspond to the cell port of specific ODUk time slot, then be sent to Long Distant Transmit on optical fiber by the line interface of OTUk.Described work optical channel a3 and protection optical channel a4 adopts packet with VLANID and APS control unit a5 transmission of information respectively; comprise SF/SD, APS and the control information of protection light channel unit a4; APS control unit a5 only carries out switching control based on VLANID, realizes the dynamic mapping between VLANID and slot, port, ODUk time slot.
Wherein, APS control unit a5, by the ethernet channel of internal system, Signal Fail, Signal Degrade and APS Overhead that work light channel unit a3 and protection light channel unit a4 transmits; according to the requirement in OTN consensus standard, decision-making goes out the current passage needing to activate.Be specially: if protect types is ODUk1+1, simultaneously exciting light channel unit a3 and protection light channel unit a4; If protect types is ODUk1:1, according to APS control unit a5 order, activate current work light channel unit a3 or protection light channel unit a4.
As shown in Figure 2, above-mentioned ODUk data, through the concurrent of source or after publishing, arrive work optical channel b3 and the protection optical channel b4 of egress.Work optical channel b3 and protection optical channel b4 completes the demapping demultiplexing of ODUk, ODUk is done cell cutting, is sent by the passage of cell from correspondence.Such as, the ODUk cell of work optical channel b3 sends from channel C h-ID1, by the system transposition Ch-ID1 → SlotC set up, points to business map unit b1; Same, the ODUk cell of protection optical channel b4 sends from channel C h-ID2, by the system transposition Ch-ID1 → SlotC set up, also points to business map unit b1.Meanwhile, detect Signal Fail, Signal Degrade and APS Overhead, issue APS control unit b5; The light channel unit of current needs that notifies APS control unit b5 activates it and intersects, and unwanted light channel unit blocks its intersection simultaneously, reaches the object that the same time only has an activate channel sensing business map unit b1.
The present invention is not limited to above-mentioned execution mode, and for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also considered as within protection scope of the present invention.The content be not described in detail in this specification belongs to the known prior art of professional and technical personnel in the field.
Claims (7)
1. in a POTN, realize the system of electric layer linear protection; comprise source and egress; it is characterized in that: source and egress include business map unit, cell switching unit, APS control unit and comprise the work light channel unit of work optical channel, comprise protection optical channel protection light channel unit, wherein
Business map unit, for completing client traffic after the mapping of ODUk business, being converted to one group of cell, distributing a multicast ID and send to cell switching unit by ODUk channel data; Also for accepting the cell that cell crosspoint sends over, be ODUk data by cell reassemble;
Cell switching unit, storage inside multicast forwarding, for identifying the cell with multicast ID, searches corresponding destination address by multicast forwarding, and the cell sent with this multicast ID is to all links; Also for automatically forwarding the message of work light channel unit and protection light channel unit according to clean culture ID to business map unit;
APS control unit, for the Signal Fail, Signal Degrade and the APS Overhead that receive work light channel unit and protect light channel unit to transmit, decision-making goes out the current work optical channel needing to activate and block and protection optical channel;
Work light channel unit and protection light channel unit, receive the cell with multicast ID respectively, and selectively activate, be sent to corresponding cell reception port; Also for receiving the business that optical fiber transmits, completing cell cutting after the demapping demultiplexing of ODUk, sending from respective channel, set up set of system and intersect, point to business map unit.
2. realize an electric layer Linear protection method in the POTN based on claim 1 system, it is characterized in that, comprising:
The business map unit of source receives client traffic after the mapping of ODUk business, by cell cutting, ODUk channel data is converted to one group of cell, and distribute a multicast ID, by the multicast forwarding in cell switching unit, cell is carried out concurrent in work light channel unit and protection light channel unit or published, after work light channel unit and protection light channel unit receive the cell with multicast ID, according to current protect types, in conjunction with the control information of APS control unit, selected to activate, the cell activated is sent to corresponding cell reception port, re-send to Optical Fiber Transmission,
After the work light channel unit of egress and protection light channel unit receive the signal of Optical Fiber Transmission, complete the demapping demultiplexing of ODUk, ODUk is done cell cutting, the passage of cell from correspondence is sent, and set up a system transposition, point to business map unit; Meanwhile, detect Signal Fail, Signal Degrade and APS Overhead, issue APS control unit; The light channel unit of current needs that notifies APS control unit activates it and intersects, and unwanted light channel unit blocks its intersection simultaneously.
3. realize electric layer Linear protection method in POTN as claimed in claim 2, it is characterized in that: in ODUk1+1 protection, need the cell of ODUk to carry out concurrent in work light channel unit and protection light channel unit; In ODUk1:1 protection, need the cell of ODUk to publish in work light channel unit and protection light channel unit.
4. realize electric layer Linear protection method in POTN as claimed in claim 3, it is characterized in that: ODUk carries out concurrent in work light channel unit and protection light channel unit, the mode of cell multicast is adopted to realize, when the work light channel unit of multicast and the line port at protection light channel unit place are at different slot board, the mode of cell switching unit multicast is adopted to realize; When the work light channel unit of multicast relates to the different time-gap of the different port of same slot board or same line port; except complete the multicast of the different slot of one-level at cell switching unit except; in work light channel unit with on the circuit board at protection light channel unit place, also secondary multicast need be carried out for different port or different ODUk time slot.
5. realize electric layer Linear protection method in POTN as claimed in claim 4; it is characterized in that: described secondary multicast is specially; the cell of multicast ID is copied in work light channel unit and protection light channel unit and is distributed to different cell process; recombinated by different cell processing units; restore the data of the identical ODUk of two-way, be sent on OTUk line interface at different port or time slot.
6. realize electric layer Linear protection method in POTN as claimed in claim 2; it is characterized in that: described work light channel unit and protection light channel unit adopt packet with VLANID and APS control unit transmission of information respectively; comprise SF/SD, APS and the control information of protection light channel unit; APS control unit only carries out switching control based on VLANID, realizes the dynamic mapping between VLANID and slot, port, ODUk time slot.
7. realize electric layer Linear protection method in POTN as claimed in claim 2; it is characterized in that: described multicast forwarding is for each multicast ID; to there being corresponding multicast destination address; cell switching unit is according to the different multicast ID received; search the destination address of corresponding this multicast ID; and judge the high-speed data physical link that destination address is corresponding, by all cells with this multicast ID, each cell is forwarded on all physical links.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107135154A (en) * | 2017-05-26 | 2017-09-05 | 烽火通信科技股份有限公司 | POTN business repeater system and business forwarding, configuration distributing, guard method |
| CN107786409A (en) * | 2016-08-26 | 2018-03-09 | 中国电信股份有限公司 | Method and apparatus for realizing ODU0 passage bearer services |
| WO2018130139A1 (en) * | 2017-01-13 | 2018-07-19 | 中兴通讯股份有限公司 | Potn service processing method, device and system |
| CN112532532A (en) * | 2020-11-16 | 2021-03-19 | 烽火通信科技股份有限公司 | Service returning method, device, equipment and readable storage medium |
| CN113873360A (en) * | 2021-09-15 | 2021-12-31 | 烽火通信科技股份有限公司 | System and method for improving VC protection efficiency carried in OTN |
| CN115333614A (en) * | 2022-07-26 | 2022-11-11 | 烽火通信科技股份有限公司 | System and method for realizing ODUk protection by using equivalent protection class, and POTN device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1625858A (en) * | 2002-01-31 | 2005-06-08 | 马科尼通讯有限公司 | Communications system |
| CN1734986A (en) * | 2004-08-11 | 2006-02-15 | 华为技术有限公司 | Method for transmitting low-speed service signal in optical transport network and its device |
| US20130114953A1 (en) * | 2011-11-07 | 2013-05-09 | Ciena Corporation | Optical transport network port protection systems and methods using flexible switch criteria |
| CN103997697A (en) * | 2014-04-21 | 2014-08-20 | 烽火通信科技股份有限公司 | Dual-channel POTN linear protection system, method and device |
| CN104811261A (en) * | 2014-01-28 | 2015-07-29 | 中国电信股份有限公司 | Optical transport network device and signal processing method thereof |
| CN104883320A (en) * | 2015-06-10 | 2015-09-02 | 烽火通信科技股份有限公司 | OTN-based packet service non-destructive adjustment apparatus and method |
-
2015
- 2015-09-15 CN CN201510585712.9A patent/CN105282631B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1625858A (en) * | 2002-01-31 | 2005-06-08 | 马科尼通讯有限公司 | Communications system |
| CN1734986A (en) * | 2004-08-11 | 2006-02-15 | 华为技术有限公司 | Method for transmitting low-speed service signal in optical transport network and its device |
| US20130114953A1 (en) * | 2011-11-07 | 2013-05-09 | Ciena Corporation | Optical transport network port protection systems and methods using flexible switch criteria |
| CN104811261A (en) * | 2014-01-28 | 2015-07-29 | 中国电信股份有限公司 | Optical transport network device and signal processing method thereof |
| CN103997697A (en) * | 2014-04-21 | 2014-08-20 | 烽火通信科技股份有限公司 | Dual-channel POTN linear protection system, method and device |
| CN104883320A (en) * | 2015-06-10 | 2015-09-02 | 烽火通信科技股份有限公司 | OTN-based packet service non-destructive adjustment apparatus and method |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107786409A (en) * | 2016-08-26 | 2018-03-09 | 中国电信股份有限公司 | Method and apparatus for realizing ODU0 passage bearer services |
| CN107786409B (en) * | 2016-08-26 | 2020-08-07 | 中国电信股份有限公司 | Method and device for realizing ODU0 channel bearing service |
| WO2018130139A1 (en) * | 2017-01-13 | 2018-07-19 | 中兴通讯股份有限公司 | Potn service processing method, device and system |
| CN107135154A (en) * | 2017-05-26 | 2017-09-05 | 烽火通信科技股份有限公司 | POTN business repeater system and business forwarding, configuration distributing, guard method |
| CN107135154B (en) * | 2017-05-26 | 2019-08-06 | 烽火通信科技股份有限公司 | POTN business repeater system and business forwarding, configuration distributing, guard method |
| CN112532532A (en) * | 2020-11-16 | 2021-03-19 | 烽火通信科技股份有限公司 | Service returning method, device, equipment and readable storage medium |
| CN112532532B (en) * | 2020-11-16 | 2022-08-12 | 烽火通信科技股份有限公司 | Service returning method, device, equipment and readable storage medium |
| CN113873360A (en) * | 2021-09-15 | 2021-12-31 | 烽火通信科技股份有限公司 | System and method for improving VC protection efficiency carried in OTN |
| CN113873360B (en) * | 2021-09-15 | 2023-05-12 | 烽火通信科技股份有限公司 | System and method for improving VC protection efficiency carried in OTN |
| CN115333614A (en) * | 2022-07-26 | 2022-11-11 | 烽火通信科技股份有限公司 | System and method for realizing ODUk protection by using equivalent protection class, and POTN device |
| CN115333614B (en) * | 2022-07-26 | 2023-05-05 | 烽火通信科技股份有限公司 | System, method and POTN device for realizing ODUk protection by using equivalent protection class |
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