CN100514935C - Network-unit apparatus management information transmission method and apparatus and network-unit apparatus - Google Patents
Network-unit apparatus management information transmission method and apparatus and network-unit apparatus Download PDFInfo
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- CN100514935C CN100514935C CNB200510127760XA CN200510127760A CN100514935C CN 100514935 C CN100514935 C CN 100514935C CN B200510127760X A CNB200510127760X A CN B200510127760XA CN 200510127760 A CN200510127760 A CN 200510127760A CN 100514935 C CN100514935 C CN 100514935C
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Abstract
The method includes steps: packaging Ethernet data packets of management information according to EOS protocol, carrying out virtual channels mapping, and sending the package through service channel; destination net element equipment of management information carries out de-mapping from virtual channels and de-packaging to obtain corresponding management information. Transport unit for management information of net element equipment includes Ethernet process module, packaging/de-packaging module, mapping/de-mapping module, and SDH/SONET module. Advantages are: collocating transmission bandwidth of management information flexibly, centralized managing transmission devices insulated by other networks without using additional interface of net element equipment, and other external data equipment, and solving issue of lack of bandwidth in original channel for management information in SDH/SONET transmission equipment.
Description
Technical field
The present invention relates to by SDH (Synchronous Digital Hierarchy) (Synchronous Digital Hierarchy, SDH) or synchronous optical network (Synchronous Optical Network, SONET) transmission network of equipment composition, relate in particular to the management information transfer approach of SDH or SONET network element device, and corresponding network element managing information conveyer and the network element device that comprises this conveyer.
Background technology
In general, all huger by the transmission network that SDH or sonet equipment are formed, and network generally all needs to manage concentratedly by seldom several network management systems, can directly manage by the management interface of equipment for the Gateway Network Element that directly links to each other with network management system, but for the non-gateway network element that can not directly link to each other with network management system, traditional SDH and SONET transmission equipment all transmit management information by its overhead byte (D1～D12 byte), these overhead bytes have been formed Data Communications Channel (DataCommunications Channel, DCC), this way to manage because of with independent of service, even obtained using the most widely without any need for advantage such as configuration, the most of employing of the management information transmission of present SDH and SONET transmission network be this DCC channel mode.
The operation principle of DCC channel mode is as shown in Figure 1:
Set Gateway Network Element (network element C among Fig. 1) on network after, Gateway Network Element directly links to each other with network management system, and all other non-gateway network element (network element A, B, D, E, F among the figure) are all communicated by letter with network management system by Gateway Network Element on the network.Intercom mutually by circuit SDH/SONET expense (D1～D12 byte) between Gateway Network Element and the non-gateway network element.This method by DCC channel management network element has two bigger shortcomings:
(1), the bandwidth of DCC passage is little and immobilize, be 768Kbps to the maximum, in NE management, software upgrading is a kind of maintenance service commonly used, professional constantly development is abundant on current transmission equipment, the software size of each unit is also increasing gradually in the network element, so the time of passing through DCC passage loading upgrading network element software also at continuous lengthening, certainly will be wasted significantly like this and safeguard manpower;
(2), the DCC passage depends on circuit SDH/SONET expense, and this expense can not be by another producer's transmission equipment transparent transmission, can not intercommunication, so when the transmission equipment of a producer was separated by the transmission network of another producer, the transmission equipment that is separated so can't be by same webmaster centralized management.
Therefore, along with Ethernet, asynchronous transfer mode (Asynchronous Transfer Mode, ATM) etc. SDH and sonet equipment are dissolved in multiple business, the configuration amount of network element and software size are all in continuous increase, the bandwidth of DCC passage has obviously become the bottleneck that NE management is safeguarded, thereby cause the efficiency of management of long-range non-gateway network element very low, so, from long term growth, the needs of daily management maintenance can't have been satisfied by the method for DCC channel management SDH and sonet equipment.In addition, because the development of SDH and SONET transmission equipment, the situation of a plurality of producers equipment associating networking has become a kind of universal phenomenon, but because the DCC passage of different manufacturers generally can not intercommunication, and producer's equipment can not transparent transmission another one producer equipment DCC communication, so but can not just compare difficulty by the management of the direct-connected producer of circuit optical fiber equipment for relatively disperseing, ways of addressing this issue is that (Digital Data Network DDN) manages network element by Digital Data Net at present.
The concrete grammar of DDN managed network element comprises as shown in Figure 2: with the NE management interface by data equipment (as router) be connected to network element can with the interface of data equipment intercommunication on.For example, the NE management interface of network element A, B, C, D all is connected to PDH (Pseudo-synchronous Digital Hierarchy) (the Plesiochronous Digital Hierarchy of network element among Fig. 2 by data equipment, PDH) interface, dispose the transmission network transfer management information that a corresponding business passage passes another producer then, behind the Gateway Network Element that the management information that transmits arrives with network management system is connected, PDH interface transfer management information by this Gateway Network Element arrives the data equipment that connects, and is connected to network management system by data equipment again and manages.
The method of the transmission network element being managed concentratedly by DDN has following shortcoming:
(1), NE management must be by means of extra data equipment (as router), cost is than higher like this, stability also is difficult to control, because it depends on the stability of network element self and data equipment;
(2), need take the extra interface of network element device, be a kind of waste to the interface of network element;
(3), in general, managing bandwidth is smaller and fixing immutable, and as transmitting management information by the PDH interface, managing bandwidth can only be the speed that the PDH port can provide so, as 2Mbps etc.
Summary of the invention
The invention provides a kind of network element managing information transfer approach, in order to solve exist in the prior art to network element device manage the limited additional interface that maybe needs to take network element device of Time Bandwidth and by external data equipment could transfer management information problem.
The present invention provides a kind of and the inventive method corresponding net element device management information conveyer in addition and comprises the network element device of described conveyer.
The invention provides a kind of network element managing information transfer approach, be applied to SDH (Synchronous Digital Hierarchy) SDH/ synchronous optical network sonet equipment, comprising:
The Ethernet data bag of management information is carried in A1, reception;
B1, the Ethernet service EOS tunneling that described Ethernet data bag employing is carried on SDH/SONET encapsulate;
C1, the packet after will encapsulating are mapped to the Virtual Channel of configuration, send by service channel;
The network element device of D1, receiving management information is separated from Virtual Channel and is mapped out the packet that carries management information;
E1, the described packet that carries management information is carried out the EOS decapsulation;
F1, the Ethernet data bag after the decapsulation is sent to the network element managing module of the network element device of described receiving management information by Ethernet interface, obtain corresponding management information.
Described steps A 1 comprises: carry the Ethernet data bag of management information from network management system or the reception of local network element device administration module.
Described EOS tunneling comprises: Generic Framing Procedure GFP agreement, Link Access Procedure Link Access Procedure-SDH protocol or High-Level Data Link Control HDLC agreement.
Described Virtual Channel comprises the cascade or the Virtual Concatenation of a plurality of passages.
The invention provides a kind of network element managing information conveyer, comprising: Ethernet processing module, encapsulation/decapsulation module, mapping/separate mapping block and SDH/SONET module;
Described Ethernet processing module is connected with the network element managing module by Ethernet interface, obtains the Ethernet data bag that carries management information and sends described encapsulation/decapsulation module to; And the Ethernet data bag that receives after the encapsulation/decapsulation resume module exchanges processing, sends to the network element managing module by described Ethernet interface;
Described encapsulation/decapsulation module adopts the EOS tunneling that the Ethernet data bag that carries management information is encapsulated; Or adopt EOS decapsulation agreement that the packet that carries management information is carried out the EOS decapsulation;
Described mapping/separate mapping block will be mapped to by the packet that carries management information after the EOS encapsulation and send to described SDH/SONET module in the Virtual Channel; Or from Virtual Channel, separate and map out the packet that carries management information that has encapsulation;
Described SDH/SONET module increases the SDH/SONET overhead byte to the described Virtual Channel after shining upon, and sends to cross-connect module; Or receive the Virtual Channel business from cross-connect module, the Virtual Channel business is removed to send to behind the SDH/SONET overhead byte shine upon/separate mapping block.
Described Ethernet processing module comprise special line transparent transmission processing sub, two layers of commutator module and three layers of commutator module one of them; Described Ethernet data bag is carried out transparent transmission, two layers of exchange processing or three layers of exchange respectively to be handled.
The network element device that the present invention also provides comprises network element managing module, cross-connect module and said network element device management information conveyer of the present invention; Ethernet processing module in the described device is connected with the network element managing module by Ethernet interface; SDH (Synchronous Digital Hierarchy) SDH/ synchronous optical network SONET module in the described device is connected with the cross-connect module of network element device.
When described network element device during as Gateway Network Element, its Ethernet processing module also is connected with network management system by Ethernet interface.
Beneficial effect of the present invention is as follows:
(1), the present invention is shone upon management information by EOS protocol encapsulation and Virtual Channel, send by service channel, transmission bandwidth can design different mapping particles according to actual needs, can also adopt cascade and Virtual Concatenation mode dynamically to change, too small, the inefficient problem of managing bandwidth in the time of can solving by DCC or DDN managed network element like this.
(2), because the present invention does not adopt DCC channel mode transfer management information by overhead byte, therefore, during the transmission equipment networking of different manufacturers, management information can both be sent to the purpose network element; Like this, also can manage concentratedly the transmission equipment of being isolated by the transmission network of other producer, and need be by other network equipment and the outer network element port of occupying volume, stability is high.
Description of drawings
Fig. 1 passes through DCC channel management network element device schematic diagram for prior art;
Fig. 2 passes through DDN mode managed network element equipment schematic diagram for prior art;
Fig. 3 is network element managing information conveyer of the present invention and connection diagram thereof.
Embodiment
Network element managing information transfer approach provided by the invention is applied to SDH/SONET equipment, comprises process of transmitting and receiving course.In transmission/receiving course, according to the diverse location of network element device in network, as: network element device is connected with network management system as Gateway Network Element, or network element device only is the middle break-through network element in the transmission path, or network element device is the purpose network element of the management information of current transmission, its processing mode to the management information of reception can be variant, below these three kinds of situations described respectively.
Situation one, network element device are Gateway Network Element, are connected with network management system; Management information that the reception network management system sends and the method flow that is sent to next network element device comprise:
Step 1, network element device receive the Ethernet data bag that carries management information that network management system sends; If this destination address that carries the Ethernet data bag of management information is this network element, then directly send to this network element device administration module; Otherwise, continue step 2;
Step 2, described Ethernet data bag adopted Ethernet service (the Ethernet Over SDH/Sonet that is carried on SDH/SONET, EOS) tunneling, as: Generic Framing Procedure (GenericFraming Procedure, GFP) agreement, Link Access Procedure SDH (Link Access Procedure-SDH) agreement or High-Level Data Link Control (Highlevel Data Link Control, HDLC) agreement encapsulates;
Step 3, the packet after will encapsulating are mapped to the Virtual Channel of configuration, send to next network element device by the SDH/SONET line module of network element device by SDH/SONET line holding service channel.
Situation two: network element device only is the middle break-through network element in the transmission path, receives the management information data that a network element sends, and is sent to next network element device, and the concrete grammar flow process comprises:
The SDH/SONET line interface of step 1, network element device receives the packet that carries management information, is sent to the cross-connect module of network element device inside by the SDH/SONET line module of local network element device inside;
Step 2, cross-connect module are according to pre-configured interconnection, to the corresponding SDH/SONET line module that is connected with next network element device, and the SDH/SONET line interface of SDH/SONET line module is sent to next network element device thus with the packet exchange of carrying management information that receives.
Situation three: network element device is the purpose network element of the management information of current transmission, receives the management information data that a network element sends, and unpacks reception in this locality, and the concrete grammar flow process comprises:
Step 1, network element device are separated mapping to the packet that carries management information that encapsulates in the Virtual Channel;
Step 2, with the described packet that carries management information by EOS decapsulation agreement, carry out decapsulation as adopting agreements such as GFP, LAPS, HDLC;
Step 3, the Ethernet data bag after the decapsulation is sent to the network element managing module by Ethernet interface, obtain corresponding management information by the network element managing module.
If network element device this locality has management information need be sent to network management system, then whether directly be connected with network management system according to this network element device, be divided into following two kinds of situations again:
(1), network element device is Gateway Network Element, its Ethernet interface is directly connected to network management system; In this case, the management information of local network element device generation directly sends to network management system after being handled by local network element Ethernet processing module exchange by the network element managing module.
(2) if network element device directly is not connected with network management system, the local management information that produces need be sent to the Gateway Network Element (may need the transmission through break-through network element in the middle of one or more) that is connected with network management system earlier; In this case, the management information that the local network element device produces needs through following processing procedure:
Step 1, network element managing module are packaged into the Ethernet data bag with the management information that the local network element device produces earlier;
Step 2, the Ethernet data bag is adopted the EOS tunneling again, as: adopt agreements such as GFP, LAPS, HDLC to encapsulate again;
Step 3, the packet after will encapsulating again are mapped to the Virtual Channel of configuration, are sent to the SDH/SONET line module of next network element device by SDH/SONET line holding service channel by the SDH/SONET line module of local network element device;
The SDH/SONET line module of step 4, next network element device receives the cross-connect module that is sent to local network element device inside behind the packet that carries management information; Cross-connect module is according to pre-configured interconnection, the packet exchange of carrying management information that receives is arrived the SDH/SONET line module that links to each other with next network element device accordingly, and the SDH/SONET line interface of SDH/SONET line module is sent to next network element device thus;
Step 5, repeating step 4 arrive the Gateway Network Element that is connected with network management system up to the packet that carries management information that transmits;
Step 6, Gateway Network Element equipment are separated mapping to the packet that carries management information in the Virtual Channel; Again the described packet that carries management information is adopted the decapsulation of EOS decapsulation agreement; And the Ethernet data bag after the decapsulation sent to network management system by Ethernet interface.
In the above method step, the mapping particle of correspondence can be determined when the design grid element device when being mapped to Virtual Channel, as adopting VC12/VC3/VC4/VT1.5/STS-1/STS-3c etc.After the mapping particle of network element device is determined,, can adopt cascade or Virtual Concatenation mode to enlarge the Virtual Channel bandwidth of transfer management information for flexible control transmission bandwidth.
According to said network element device management information transfer approach of the present invention, the invention provides a kind of corresponding network element managing information conveyer, comprising: Ethernet processing module, encapsulation/decapsulation module, mapping/separate mapping block and SDH/SONET module.
Can in each SDH/SONET transmission network element device, increase (embedding) conveyer of the present invention; Or conveyer of the present invention is connected with each SDH/SONET transmission network element device as a self-contained unit.
The concrete structure of conveyer of the present invention and connection diagram are as shown in Figure 3.
Conveyer of the present invention provides Ethernet interface to be connected with the network element managing module.The Ethernet processing module is mainly finished the transparent transmission of Ethernet data bag or two layers (three layers) exchange is handled; Concrete processing mode comprises:
If the Ethernet interface of A conveyer is connected with network management system, then the Ethernet processing module receives the Ethernet data bag that carries management information that network management system sends from Ethernet interface, if this destination address that carries the Ethernet data bag of management information is this network element, then directly the Ethernet data bag that receives is sent to this network element device administration module; Otherwise the Ethernet processing module adopts special line transparent transmission or two layers (three layers) exchange processing mode to send to the encapsulation/decapsulation module; In the opposite direction, the Ethernet processing module receives the Ethernet data bag that carries management information that the encapsulation/decapsulation module sends, and adopts special line transparent transmission or two layers (three layers) exchange processing mode, is sent to network management system by Ethernet interface;
B, for the break-through network element device in the middle of the network, if local network element device administration module has management information need send to next network element device, then the Ethernet processing module receives the local Ethernet data bag that carries management information that produces by Ethernet interface, adopts special line transparent transmission or two layers (three layers) exchange processing mode to send to the encapsulation/decapsulation module; In the opposite direction, when receiving destination address when being the management information of this network element, the Ethernet processing module receives the Ethernet data bag that carries management information that the encapsulation/decapsulation module sends, adopt special line transparent transmission or two layers (three layers) exchange processing mode, transmit the network element managing module of Ethernet data bag by Ethernet interface, obtain corresponding management information by this network element managing module to local network element.
The concrete processing mode of encapsulation/decapsulation module comprises: receive the Ethernet data bag that the Ethernet processing module sends, adopt the EOS tunneling, encapsulate as adopting agreements such as GFP, LAPS, HDLC; And the packet that carries management information after will encapsulating sends to and shines upon/separate mapping block; Or receive the packet that carries management information that shines upon/separate the mapping block transmission, and adopt EOS decapsulation agreement, carry out decapsulation as adopting agreements such as GFP, LAPS, HDLC, and send to the Ethernet processing module.
The concrete processing mode of shining upon/separating mapping block comprises: the packet that carries management information after the encapsulation/decapsulation module package is mapped to pre-configured Virtual Channel (comprising cascade or empty cascade), re-sends to the SDH/SONET module; Or from Virtual Channel, separate and map out the packet that carries management information that band has encapsulated.
The concrete processing mode of SDH/SONET module comprises: the Virtual Channel to the packet that carries management information after the mapping increases the SDH/SONET overhead byte, and sends to cross-connect module; Or from cross-connect module reception Virtual Channel business, and supervision SDH/SONET overhead byte and performance, if overhead byte and predetermined value do not match or there is the performance error code in business, report and alarm then removes the Virtual Channel business at last to send to behind the SDH/SONET overhead byte and shines upon/separate mapping block.
The present invention also provides a kind of network element device, comprises said network element device management information conveyer of the present invention.Ethernet processing module in the conveyer is connected with the network element managing module by Ethernet interface; SDH/SONET module in the conveyer is connected with the cross-connect module of network element device.
When network element device of the present invention is connected with network management system, its Ethernet processing module receives the Ethernet data bag that carries management information that network management system sends by Ethernet interface, successively by encapsulation/decapsulation module, mapping/the separate processing of mapping block and SDH/SONET module, send to the cross-connect module of network element device, and take service channel by the packet that the SDH/SONET line module will carry management information and send to the network element device that the next one is connected.
When network element device of the present invention receives destination address for the management information data of this network element, separate from Virtual Channel by the mapping in the conveyer/separate mapping block and to map out the packet that carries management information; By encapsulation/decapsulation module in the conveyer the described packet that carries management information is adopted EOS decapsulation agreement, as adopting agreement decapsulations such as GFP, LAPS, HDLC; Send to the network element managing module by the Ethernet data bag of Ethernet processing module in the conveyer after by Ethernet interface again, obtain corresponding management information by the network element managing module with decapsulation.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (9)
1, a kind of network element managing information transfer approach is applied to SDH (Synchronous Digital Hierarchy) SDH/ synchronous optical network sonet equipment, it is characterized in that, comprising:
The Ethernet data bag of management information is carried in A1, reception;
B1, the Ethernet service EOS tunneling that described Ethernet data bag employing is carried on SDH/SONET encapsulate;
C1, the packet after will encapsulating are mapped to the Virtual Channel of configuration, send by service channel;
The network element device of D1, receiving management information is separated from Virtual Channel and is mapped out the packet that carries management information;
E1, the described packet that carries management information is carried out the EOS decapsulation;
F1, the Ethernet data bag after the decapsulation is sent to the network element managing module of the network element device of described receiving management information by Ethernet interface, obtain corresponding management information.
2, the method for claim 1 is characterized in that, described steps A 1 comprises: carry the Ethernet data bag of management information from network management system or the reception of local network element device administration module.
3, the method for claim 1 is characterized in that, described EOS tunneling comprises: Generic Framing Procedure GFP agreement, Link Access Procedure Link Access Procedure-SDH protocol or High-Level Data Link Control HDLC agreement.
4, the method for claim 1 is characterized in that, described Virtual Channel comprises the cascade or the Virtual Concatenation of a plurality of passages.
5, a kind of network element managing information conveyer is characterized in that, comprising: Ethernet processing module, encapsulation/decapsulation module, mapping/separate mapping block and SDH/SONET module;
Described Ethernet processing module is connected with the network element managing module by Ethernet interface, obtains the Ethernet data bag that carries management information and sends described encapsulation/decapsulation module to; And the Ethernet data bag that receives after the encapsulation/decapsulation resume module exchanges processing, sends to the network element managing module by described Ethernet interface;
Described encapsulation/decapsulation module adopts the EOS tunneling that the Ethernet data bag that carries management information is encapsulated; Or adopt EOS decapsulation agreement that the packet that carries management information is carried out the EOS decapsulation;
Described mapping/separate mapping block will be mapped to by the packet that carries management information after the EOS encapsulation and send to described SDH/SONET module in the Virtual Channel; Or from Virtual Channel, separate and map out the packet that carries management information that has encapsulation;
Described SDH/SONET module increases the SDH/SONET overhead byte to the described Virtual Channel after shining upon, and sends to cross-connect module; Or receive the Virtual Channel business from cross-connect module, the Virtual Channel business is removed to send to behind the SDH/SONET overhead byte shine upon/separate mapping block.
6, network element managing information conveyer as claimed in claim 5 is characterized in that, described Ethernet processing module comprise special line transparent transmission processing sub, two layers of commutator module and three layers of commutator module one of them; Described Ethernet data bag is carried out transparent transmission, two layers of exchange processing or three layers of exchange respectively to be handled.
7, a kind of network element device comprises network element managing module and cross-connect module, it is characterized in that, also comprises the described network element managing information conveyer of claim 5; Ethernet processing module in the described device is connected with the network element managing module by Ethernet interface; SDH (Synchronous Digital Hierarchy) SDH/ synchronous optical network SONET module in the described device is connected with the cross-connect module of network element device.
8, network element device as claimed in claim 7 is characterized in that, when described network element device during as Gateway Network Element, its Ethernet processing module also is connected with network management system by Ethernet interface.
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| CNB200510127760XA CN100514935C (en) | 2005-12-06 | 2005-12-06 | Network-unit apparatus management information transmission method and apparatus and network-unit apparatus |
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| CN100514935C true CN100514935C (en) | 2009-07-15 |
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| CN103118401B (en) * | 2009-06-19 | 2015-09-30 | 华为技术有限公司 | Service bearing mapping method and communication equipment |
| CN101932102B (en) | 2009-06-19 | 2013-01-23 | 华为技术有限公司 | Service bearing mapping method and communication equipment thereof |
| CN102404153A (en) * | 2011-11-30 | 2012-04-04 | 武汉烽火网络有限责任公司 | Method and device for realizing SDH management network based on DCN and software exchange |
| CN105933142A (en) * | 2016-04-08 | 2016-09-07 | 邦彦技术股份有限公司 | Network element management method and device |
| CN108631873B (en) * | 2017-03-21 | 2023-04-07 | 中兴通讯股份有限公司 | Method and device for transmitting and receiving network management information, transmitting equipment and receiving equipment |
| CN107979784A (en) * | 2017-12-28 | 2018-05-01 | 中国电子科技集团公司第三十四研究所 | A kind of transparent transmission device and transmitting method of duties and webmaster based on ASON |
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