CN102902617A - Method and system for realizing SDH (Synchronous Digital Hierarchy) virtual concatenation service through software simulation - Google Patents
Method and system for realizing SDH (Synchronous Digital Hierarchy) virtual concatenation service through software simulation Download PDFInfo
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Abstract
The invention discloses a method for realizing an SDH (Synchronous Digital Hierarchy) virtual concatenation service through software simulation. The method comprises the following steps: a source-end simulation single plate conducts SDH virtual concatenation service process on an Ethernet data package sent by a simulation instrument, and sends the Ethernet data package to a host-end simulation single plate; the host-end simulation signal plate recovers the processed Ethernet data package, and sends the recovered Ethernet data package to the simulation instrument; and the simulation instrument compares quantities and contents of the received and the sent Ethernet data packages so as to judge whether the source-end simulation single plate and the host-end simulation single plate support the SDH virtual concatenation service or not. The invention provides the method and a system for realizing the SDH virtual concatenation service through the software simulation, so that service single plate software can be tested on the premise of not using service single plate hardware.
Description
Technical field
The present invention relates to the communications field, specially refer to the method and system that a kind of software emulation is realized SDH Virtual Concatenation business.
Background technology
Usually the software development of the service board in the communication apparatus is operated in the single plate hardware exploitation and is difficult to effectively carry out before finishing.Because the hardware and software development can not walk abreast and carry out, and has prolonged the cycle of research and development of products.For the problems referred to above, the current scheme of generally taking is normally driven piles below board software drives layer, the end value of upper-layer configured is saved in the file, then compares with the expected result value, judge the correctness that the software configuration flow is realized with this.The artificial participation in application of this kind solution is more, efficient is low, exploitation, commissioning staff are required high, and only can verifying software the correctness that realizes of from top to bottom configuration flow, finally also need verify at veneer as for the realization situation of software to the business function support.
Summary of the invention
The method and system of fundamental purpose of the present invention for providing a kind of software emulation to realize SDH Virtual Concatenation business realize carrying out the test of service board software under the prerequisite that breaks away from service board hardware.
The present invention proposes the method that a kind of software emulation is realized SDH Virtual Concatenation business, comprising:
The source simulated single board carries out the processing of SDH Virtual Concatenation business to the Ethernet data bag that the emulation instrument sends, and is sent to the egress simulated single board;
Described egress simulated single board recovers the Ethernet data bag after processing, and is sent to described emulation instrument;
Described emulation instrument is is relatively received and dispatched quantity and the content of Ethernet data bag, judges whether source simulated single board and egress simulated single board support the SDH Virtual Concatenation professional.
Preferably, the processing of carrying out SDH Virtual Concatenation business of described source simulated single board Ethernet data bag that the emulation instrument is sent comprises:
The Ethernet data bag that described emulation instrument is sent carries out GFP protocol encapsulation, Virtual Concatenation mapping and the integration of STM frame, becomes the STM frame.
Preferably, described egress simulated single board recovers to comprise to the Ethernet data bag after processing:
Described STM frame is carried out overhead field processing, recovering virtual cascades and decapsulation, become the Ethernet data bag of described emulation instrument receipts waiting.
Preferably, the processing of carrying out SDH Virtual Concatenation business of described source simulated single board Ethernet data bag that the emulation instrument is sent is specially:
According to certain frequency, the virtual cascade group of all configurations is carried out a Virtual Concatenation mapping by default timer.
Preferably, before the Ethernet data bag that the described source simulated single board of execution sends the emulation instrument carries out the processing of SDH Virtual Concatenation business, also comprise:
Source simulated single board and egress simulated single board are according to LCAS protocol configuration virtual cascade group information.
The present invention also proposes the system that a kind of software emulation is realized SDH Virtual Concatenation business, comprises emulation instrument, source simulated single board and egress simulated single board, wherein,
Described emulation instrument is used for generating and sending the Ethernet data bag to the source simulated single board; And receive the Ethernet data that described egress simulated single board sends, and quantity and the content of relatively receiving and dispatching the Ethernet data bag, judge then whether source simulated single board and egress simulated single board support the SDH Virtual Concatenation professional;
Described source simulated single board is used for the Ethernet data bag that the emulation instrument sends is carried out the processing of SDH Virtual Concatenation business, and is sent to the egress simulated single board;
Described egress simulated single board recovers the Ethernet data bag after processing, and is sent to described emulation instrument.
Preferably, described source simulated single board specifically is used for:
The Ethernet data bag that described emulation instrument is sent carries out GFP protocol encapsulation, Virtual Concatenation mapping and the integration of STM frame, becomes the STM frame.
Preferably, described egress simulated single board specifically is used for:
Described STM frame is carried out overhead field processing, recovering virtual cascades and decapsulation, become the Ethernet data bag of described emulation instrument receipts waiting.
Preferably, described source simulated single board also is used for:
According to certain frequency, the virtual cascade group of all configurations is carried out a Virtual Concatenation mapping by default timer.
Preferably, described source simulated single board also is used for:
According to LCAS agreement and egress simulated single board configuration virtual cascade group information.
Software emulation in this paper is realized the method and system of SDH Virtual Concatenation business, realizes the Virtual Concatenation processing capacity that reason hardware is finished in the professional transmission of SDH with software emulation.Can be applied to software development, the test of data service veneer in multi-service transport platform (Multi-Service Transfer Platform, the MSTP) equipment based on SDH.The checking veneer drives the correctness of the above board software configuration flow realization of layer and to the support situation of business under the prerequisite that breaks away from service board hardware, significantly improve the concurrent development granularity of data service board software and hardware, can play obvious effect at assurance progress, the aspect such as control cost.
Description of drawings
Fig. 1 is the schematic flow sheet that software emulation of the present invention is realized method one embodiment of SDH Virtual Concatenation business;
Fig. 2 is the application scenarios schematic diagram that software emulation of the present invention is realized method one embodiment of SDH Virtual Concatenation business;
Fig. 3 is that software emulation of the present invention is realized the schematic flow sheet that the access of source simulated single board is processed among method one embodiment of SDH Virtual Concatenation business;
Fig. 4 is the rule schema that software emulation of the present invention is realized Virtual Concatenation mapping among method one embodiment of SDH Virtual Concatenation business;
Fig. 5 is the schematic flow sheet that software emulation of the present invention is realized Virtual Concatenation mapping among method one embodiment of SDH Virtual Concatenation business;
Fig. 6 is the schematic flow sheet that software emulation of the present invention is realized egress simulated single board Recovery processing among method one embodiment of SDH Virtual Concatenation business;
Fig. 7 is the schematic flow sheet that software emulation of the present invention is realized recovering virtual cascades among method one embodiment of SDH Virtual Concatenation business;
Fig. 8 is the structural representation that software emulation of the present invention is realized one embodiment of system of SDH Virtual Concatenation business.
The realization of the object of the invention, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
With reference to Fig. 1, method one embodiment that software emulation of the present invention is realized SDH Virtual Concatenation business is proposed, Figure 2 shows that the typical application scenarios of the present embodiment, comprise two simulated single boards and an emulation instrument.Described simulated single board refers to the emulated data service board herein, and one is source simulated single board 11, and another is egress simulated single board 12, and described emulation instrument 10 refers to that is used for the instrument that the test data message generates, receives and add up.Other application scenarios such as a plurality of simulated single board and an emulation instrument 10 also are applicable to the present embodiment, but wherein should have one as source simulated single board 11 and the egress simulated single board 12 as operational trials of operational trials.
The present embodiment is taked following steps:
Step S101, source simulated single board 11, egress simulated single board 12 and emulation instrument 10 are set.Source simulated single board 11 and egress simulated single board 12 have been installed the Realization of Simulation SDH Virtual Concatenation business function code and veneer item code and the executable file that compiles out.
Simulated single board virtual cascade group (Virtual Concatenation Group, the VCG) information of step S102, configuration source simulated single board 11, egress simulated single board 12.VCG information can be passed through manual configuration, also can use operation LCAS (Link Capacity Adjust Scheme) protocol negotiation by source simulated single board 11 and egress simulated single board 12 and realize automatically configuration, as move LCAS protocol negotiation configuration, then the negotiation information of LCAS agreement transmits by emulation STM-N frame, the structured data of the additional self-defining overhead byte of the accurate STM-N frame format of emulation STM-N frame index of the present embodiment.The following is the example that VGG information is set:
The VCG information of source simulated single board 11: be numbered 1; Sending direction enables; Sending direction LCAS agreement enables; The sending direction number of members is 2; Sending direction member 1 time-gap number is 1, and member 2 time-gap number is 2; Two members of sending direction are normal bearer service all; It is that 2, MFI2 is 5 that sending direction will send frame identification MFI1.
Be numbered 1 member's gap information in the source simulated single board 11: sending direction activates; VCG is numbered 1 under the sending direction; Sending direction LCAS protocol overhead control word segment value is NORM; Sending direction LCAS agreement SQ field value is 0.
Source simulated single board 11 is numbered 2 member's gap information: sending direction activates; VCG is numbered 1 under the sending direction; Sending direction LCAS protocol overhead control word segment value is EOS; Sending direction LCAS agreement SQ field value is 1.
Egress simulated single board 12VCG information: be numbered 2; Receive direction enables; Receive direction LCAS agreement enables; The receive direction number of members is 2; Receive direction member 1 time-gap number is 2, and member 2 time-gap number is 3; The MFI1 of receive direction expectation received frame is that 2, MFI2 is 5.
Egress simulated single board 12 is numbered 2 member's gap information: receive direction activates; VCG is numbered 2 under the receive direction.
Egress simulated single board 12 is numbered member's gap information of 3: sending direction activates; VCG is numbered 1 under the sending direction.
Step S103, the test that generates given paces by emulation instrument 10 simulation are sent to source simulated single board 11 downstream with the Ethernet data bag;
The test that send step S104,11 pairs of upstreams of source simulated single board accesses processing with the Ethernet data bag, finally mails to the downstream by emulation STM frame.As shown in Figure 3, framing encapsulation, Virtual Concatenation mapping and the integration of STM frame that is divided into the Ethernet data bag processed in the access of source simulated single board 11:
Step S401, framing encapsulation.Software is realized GFP protocol encapsulation function, and the Ethernet data bag of finishing receiving carries out buffer memory and encapsulation, by inserting idle frame, the discontinuous Ethernet data bag of inputting is modeled as the continuous business data flow of constant rate.
Step S402, Virtual Concatenation mapping.According to the VCG information that configures among the step S102, rule according to continuous data mapping order among the VCG shown in Figure 4 is shone upon, with the Ethernet data bag after the framing encapsulation, jointly carried by effective member in the group, and send downstream, the present embodiment utilizes the synchronization mechanism of timer simulation SDH, and control source simulated single board 11 is according to certain frequency, and the VCG of all configurations is carried out a Virtual Concatenation mapping.Figure 5 shows that the concrete processing procedure of the Virtual Concatenation mapping that software is realized, the configuration of example describes among the integrating step S102:
Step S4021, from buffer memory, read the Ethernet data bag after the GFP protocol encapsulation;
Step S4022, successfully read Ethernet data bag (data non-NULL) and then continue;
Step S4023, VCG sending direction enable then to continue;
Member's number of efficient bearer traffic is greater than 0 continuation in step S4024, the VGG group, the VCG group has two members in the present embodiment, member 1 control word NORM effectively carries data, and member's 2 control words are that EOS then is the member of member 2 for last the carrying data in the VGG group;
Step S4025, realization are carried out the Virtual Concatenation mapping to each bearer service member's time slot, and the VCG group exists two members and equal bearer service, and member 1 SQ is 0, and member 2 SQ is 1.So the deviation post to member 1 mapping is 1, member 2 deviation post is 2, according to the data that read among the step S4021, the 1st, 3,5... byte is mapped in member 1 the time slot and transmits; The 2nd, 4,6... byte is mapped in member 2 the time slot and transmits.
Step S4026, the data after will shining upon are placed on the processing of waiting for next step in the global memory of STM-16 frame conversion, and the transmission frame identification MFI1 that upgrades VCG is that 2, MFI2 is 6.
Step S4027, filling protocol overhead, it is that 0, MFI1 is that 2, MFI2 is that 5, Ctrl field is 2 (the NORM values in the standard) that the H4 byte of member's 1 corresponding time slot is filled SQ; It is that 0, MFI1 is that 2, MFI2 is that 5, Ctrl field is 2 (the IDLE values in the standard) that the H4 byte of member's 1 corresponding time slot is filled SQ.
Step S403, STM frame are integrated.Ethernet data bag after the Virtual Concatenation mapping is integrated into emulation STM-N frame according to project demand, and fills the overhead field of STM frame.
Step S105, egress simulated single board 12 receive emulation STM-N frame from the upstream, carry out Recovery processing, and the data that recover are sent to emulation instrument 10 downstream.As shown in Figure 6, the Recovery processing of egress simulated single board 12 is divided into overhead field processing, data buffer storage, recovering virtual cascades and framing decapsulation.
Step S501, overhead field are processed.Extract LCAS protocol overhead field from emulation STM-N frame, project application is processed or reported to the VCG information that configures among the integrating step S102.
Step S502, data buffer storage.Before certain frame of Wait-to-Restore, group member's data all arrive, paid-in these frame data of buffer memory member, and wait for that other members of the group's same frame data all arrive the recovering virtual cascades that can begin these frame data afterwards.
Step S503, recovering virtual cascades.VCG frame data to be recovered are read out from data buffer storage, and the reverse process of the rule of continuous data mapping order recovers data in organizing according to VCG shown in Figure 4.The present embodiment utilizes the synchronization mechanism of timer simulation SDH, and control egress simulated single board 12 is according to certain frequency, the VCG of all configurations is carried out a Virtual Concatenation resolve Recovery processing.Figure 7 shows that Virtual Concatenation dissection process process, the configuration of example describes among the integrating step S102:
Step S5031, judge whether the VCG receive direction enables, enable then to continue to process;
Step S5032, the corresponding current recovery frame identification of member (MFI1 is that 2, MFI2 is 5) data cached of from buffer memory, reading VCG group;
Step S5033, reading out data success then continue, otherwise jump to step S5037.
Step S5034, judge in the VCG two corresponding MFI of members are that 2, MFI2 is whether 5 data all arrive and continue, otherwise jump to step S5039.
Step S5035, arrange according to the LCAS agreement SQ field ascending order in two member's receive datas, member 2 SQ is 0, and member 1 SQ is 1;
Step S5036, read each member's time slot according to ranking results traversal and receive data, interleave according to byte and finish recovering virtual cascades and process.Jump to step S5040 after handling.
Step S5037, judge and do not have the data of the current recovery frame of the member next frame (MFI1 is that 2MFI2 is 6) that whether has corresponding VCG group in the buffer memory then process ends, otherwise continue;
Step S5038, generation LOM alarm, the recovery of upgrading the VCG group identifies (MFI1 is that 2MFI2 is 6) and process ends;
Exist the member to postpone whether to surpass a Preset Time in step S5039, the group, do not surpass and then get back to step S5034, otherwise continue;
Step S5040, the group member who empties corresponding current recovery sign are data cached;
The recovery sign of step S5041, renewal VCG group.
Step S106, emulation instrument 10 judge by the quantity of statistics transmitting-receiving bag and the content of relatively receiving and dispatching bag whether board software supports the SDH Virtual Concatenation professional.
Software emulation in this paper is realized the method for SDH Virtual Concatenation business, realizes the Virtual Concatenation processing capacity that reason hardware is finished in the professional transmission of SDH with software emulation.Can be applied to software development, test based on data service veneer in the multi-service transport platform equipment of SDH.The checking veneer drives the correctness of the above board software configuration flow realization of layer and to the support situation of business under the prerequisite that breaks away from service board hardware, significantly improve the concurrent development granularity of data service board software and hardware, can play obvious effect at assurance progress, the aspect such as control cost.
With reference to Fig. 8, one embodiment of system that software emulation of the present invention is realized SDH Virtual Concatenation business is proposed, comprise emulation instrument 20, source simulated single board 21 and egress simulated single board 23, wherein,
Described emulation instrument 20 is used for generating and sending the Ethernet data bag to source simulated single board 21; And receive the Ethernet data that described egress simulated single board 23 sends, and quantity and the content of relatively receiving and dispatching the Ethernet data bag, judge then whether source simulated single board 21 and egress simulated single board 23 support the SDH Virtual Concatenation professional;
Described source simulated single board 21 is used for the Ethernet data bag that emulation instrument 20 sends is carried out the processing of SDH Virtual Concatenation business, and is sent to egress simulated single board 23;
Ethernet data bag after 23 pairs of processing of described egress simulated single board recovers, and is sent to described emulation instrument 20.
In the present embodiment, source simulated single board 21 and egress simulated single board 23 finger emulated data service boards, described emulation instrument 20 refers to that is used for the instrument that the test data message generates, receives and add up.
Source simulated single board 21, egress simulated single board 23 and emulation instrument 20 at first are set.Source simulated single board 21 and egress simulated single board 23 have been installed the Realization of Simulation SDH Virtual Concatenation business function code and veneer item code and the executable file that compiles out.The VCG information of pre-configured source simulated single board 21, egress simulated single board 23.VCG information can be passed through manual configuration, also can use operation LCAS protocol negotiation by source simulated single board 21 and egress simulated single board 23 and realize automatically configuration, as move LCAS protocol negotiation configuration, then the negotiation information of LCAS agreement transmits by emulation STM-N frame, the structured data of the additional self-defining overhead byte of the accurate STM-N frame format of emulation STM-N frame index of the present embodiment.The following is the example that VGG information is set:
The VCG information of source simulated single board 21: be numbered 1; Sending direction enables; Sending direction LCAS agreement enables; The sending direction number of members is 2; Sending direction member 1 time-gap number is 1, and member 2 time-gap number is 2; Two members of sending direction are normal bearer service all; It is that 2, MFI2 is 5 that sending direction will send frame identification MFI1.
Be numbered 1 member's gap information in the source simulated single board 21: sending direction activates; VCG is numbered 1 under the sending direction; Sending direction LCAS protocol overhead control word segment value is NORM; Sending direction LCAS agreement SQ field value is 0.
Source simulated single board 21 is numbered 2 member's gap information: sending direction activates; VCG is numbered 1 under the sending direction; Sending direction LCAS protocol overhead control word segment value is EOS; Sending direction LCAS agreement SQ field value is 1.
Egress simulated single board 23VCG information: be numbered 2; Receive direction enables; Receive direction LCAS agreement enables; The receive direction number of members is 2; Receive direction member 1 time-gap number is 2, and member 2 time-gap number is 3; The MFI1 of receive direction expectation received frame is that 2, MFI2 is 5.
Egress simulated single board 23 is numbered 2 member's gap information: receive direction activates; VCG is numbered 2 under the receive direction.
Egress simulated single board 23 is numbered member's gap information of 3: sending direction activates; VCG is numbered 1 under the sending direction.
The test that 20 simulations of emulation instrument generate given pace is sent to source simulated single board 21 downstream with the Ethernet data bag;
The test that send 21 pairs of upstreams of source simulated single board accesses processing with the Ethernet data bag, finally mails to the downstream by emulation STM frame.The access of source simulated single board 21 is processed the framing encapsulation, Virtual Concatenation mapping and the STM frame that are divided into the Ethernet data bag and is integrated:
Described framing encapsulation is that software is realized GFP protocol encapsulation function, and the Ethernet data bag of finishing receiving carries out buffer memory and encapsulation, by inserting idle frame, the discontinuous Ethernet data bag of inputting is modeled as the continuous business data flow of constant rate.
Described Virtual Concatenation mapping is according to pre-configured VCG information, rule according to continuous data mapping order among the VCG shown in Figure 4 is shone upon, with the Ethernet data bag after the framing encapsulation, jointly carried by effective member in the group, and send downstream, the present embodiment utilizes the synchronization mechanism of timer simulation SDH, and control source simulated single board 21 is according to certain frequency, and the VCG of all configurations is carried out a Virtual Concatenation mapping.
Described STM frame integration is that the Ethernet data bag after the Virtual Concatenation mapping is integrated into emulation STM-N frame according to project demand, and fills the overhead field of STM frame.
Egress simulated single board 23 receives emulation STM-N frame from the upstream, carry out Recovery processing, and the data that recover are sent to emulation instrument 20 downstream.The Recovery processing of egress simulated single board 23 is divided into overhead field processing, data buffer storage, recovering virtual cascades and framing decapsulation.
Described overhead field is processed and is referred to extract LCAS protocol overhead field from emulation STM-N frame, processes or report project application in conjunction with pre-configured VCG information.
Described data buffer storage effect is certain frame of Wait-to-Restore, before group member's data all do not arrive, paid-in these frame data of buffer memory member, and wait for that other members of the group's same frame data all arrive the recovering virtual cascades that can begin these frame data afterwards.
Described recovering virtual cascades is that VCG frame data to be recovered are read out from data buffer storage, recovers data according to the reverse process of the rule of continuous data mapping order among the VCG shown in Figure 4.The present embodiment utilizes the synchronization mechanism of timer simulation SDH, and control egress simulated single board 23 is according to certain frequency, the VCG of all configurations is carried out a Virtual Concatenation resolve Recovery processing.
Software emulation in this paper is realized the system of SDH Virtual Concatenation business, realizes the Virtual Concatenation processing capacity that reason hardware is finished in the professional transmission of SDH with software emulation.Can be applied to software development, test based on data service veneer in the multi-service transport platform equipment of SDH.The checking veneer drives the correctness of the above board software configuration flow realization of layer and to the support situation of business under the prerequisite that breaks away from service board hardware, significantly improve the concurrent development granularity of data service board software and hardware, can play obvious effect at assurance progress, the aspect such as control cost.
The above only is the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. the method for a software emulation realization SDH Virtual Concatenation business is characterized in that, comprising:
The source simulated single board carries out the processing of SDH Virtual Concatenation business to the Ethernet data bag that the emulation instrument sends, and is sent to the egress simulated single board;
Described egress simulated single board recovers the Ethernet data bag after processing, and is sent to described emulation instrument;
Described emulation instrument is is relatively received and dispatched quantity and the content of Ethernet data bag, judges whether source simulated single board and egress simulated single board support the SDH Virtual Concatenation professional.
2. the method for claim 1 is characterized in that, the processing that the Ethernet data bag that described source simulated single board sends the emulation instrument carries out SDH Virtual Concatenation business comprises:
The Ethernet data bag that described emulation instrument is sent carries out GFP protocol encapsulation, Virtual Concatenation mapping and the integration of STM frame, becomes the STM frame.
3. method as claimed in claim 2 is characterized in that, described egress simulated single board recovers to comprise to the Ethernet data bag after processing:
Described STM frame is carried out overhead field processing, recovering virtual cascades and decapsulation, become the Ethernet data bag of described emulation instrument receipts waiting.
4. method as claimed in claim 2 is characterized in that, the processing that the Ethernet data bag that described source simulated single board sends the emulation instrument carries out SDH Virtual Concatenation business is specially:
According to certain frequency, the virtual cascade group of all configurations is carried out a Virtual Concatenation mapping by default timer.
5. such as each described method in the claim 1 to 4, it is characterized in that, before the Ethernet data bag that the described source simulated single board of execution sends the emulation instrument carries out the processing of SDH Virtual Concatenation business, also comprise:
Source simulated single board and egress simulated single board are according to LCAS protocol configuration virtual cascade group information.
6. the system of a software emulation realization SDH Virtual Concatenation business is characterized in that, comprises emulation instrument, source simulated single board and egress simulated single board, wherein,
Described emulation instrument is used for generating and sending the Ethernet data bag to the source simulated single board; And receive the Ethernet data that described egress simulated single board sends, and quantity and the content of relatively receiving and dispatching the Ethernet data bag, judge then whether source simulated single board and egress simulated single board support the SDH Virtual Concatenation professional;
Described source simulated single board is used for the Ethernet data bag that the emulation instrument sends is carried out the processing of SDH Virtual Concatenation business, and is sent to the egress simulated single board;
Described egress simulated single board recovers the Ethernet data bag after processing, and is sent to described emulation instrument.
7. system as claimed in claim 6 is characterized in that, described source simulated single board specifically is used for:
The Ethernet data bag that described emulation instrument is sent carries out GFP protocol encapsulation, Virtual Concatenation mapping and the integration of STM frame, becomes the STM frame.
8. system as claimed in claim 7 is characterized in that, described egress simulated single board specifically is used for:
Described STM frame is carried out overhead field processing, recovering virtual cascades and decapsulation, become the Ethernet data bag of described emulation instrument receipts waiting.
9. method as claimed in claim 8 is characterized in that, described source simulated single board also is used for:
According to certain frequency, the virtual cascade group of all configurations is carried out a Virtual Concatenation mapping by default timer.
10. such as each described device in the claim 6 to 9, it is characterized in that, described source simulated single board also is used for:
According to LCAS agreement and egress simulated single board configuration virtual cascade group information.
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| CN108696385A (en) * | 2018-03-30 | 2018-10-23 | 中国电力科学研究院有限公司 | The emulation mode of SDH Optical Transmission Network OTNs in electric system based on EXata |
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