CN101834665B - Packet loss detection system and method of Ethernet service in DTMB (Digital Television Terrestrial Multimedia Broadcasting) system - Google Patents
Packet loss detection system and method of Ethernet service in DTMB (Digital Television Terrestrial Multimedia Broadcasting) system Download PDFInfo
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- CN101834665B CN101834665B CN201010165138.9A CN201010165138A CN101834665B CN 101834665 B CN101834665 B CN 101834665B CN 201010165138 A CN201010165138 A CN 201010165138A CN 101834665 B CN101834665 B CN 101834665B
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Abstract
The invention discloses a packet loss detection system and a method of Ethernet service in a DTMB (Digital Television Terrestrial Multimedia Broadcasting) system, wherein the system comprises a first exchange function service single board, a second exchange function service single board and a webmaster, wherein the first exchange function service single board is arranged in a first converge edge device and used for encapsulating Ethernet service messages into an optical channel transport unit (OTU2) data frame and sending the data frame into a DWDM (Dense Wavelength Division Multiplexing) system to be tested; the second exchange function service single board is arranged in a second converge edge device and used for trying to receive the OTU2 data frame through the DWDM system and decapsulating the data frame into the Ethernet service messages; the webmaster is used for calculating a difference value between the total sending quantity of the Ethernet service messages of the first exchange function service single board and the total receiving quantity of the Ethernet service messages of the second exchange function service single board within test time and counting to obtain the packet loss quantity of the Ethernet service in the DWDM system. The invention realizes the automation of the packet loss detection.
Description
Technical field
The present invention relates to the communications field, in particular to the packet loss detection system and method for Ethernet service in a kind of dwdm system.
Background technology
IPTV (Internet Protocol Television, Web TV) the continuous increase of the day by day universal and demand of user to the network bandwidth of business, impel the application of DWDM (DenseWavelength Division Multiplexing, dense wave division multipurpose) to sink in MAN.At present, in the access service of dwdm system, having more than 80% is Ethernet service, and therefore, Ethernet service has become the most important bearer service of dwdm system.
DWDM network system more complicated, OTN (Optical TransportNetwork, the optical transfer network) technical standard of each manufacturer is not quite similar again, makes interconnecting between business tend to exist a lot of problems.Like this, it is very necessary taking certain mode to carry out packet loss detection to the business in dwdm system.
That use test instrument is carried out orientation problem according to the method for detecting packet loss of correlation technique, generally that (being Network Service Access Point) connects a test instrumentation in network one end, the other end (being Network destination node) connects another test instrumentation, two test instrumentations send respectively test stream to opposite end, then by checking that packet drop carries out packet loss detection.But, adopt in this way and exist and carry and transport inconvenient problem.
Summary of the invention
Main purpose of the present invention is to provide the packet loss detection system and method for Ethernet service in a kind of dwdm system, at least to address the above problem.
According to an aspect of the present invention, the packet loss detection system of Ethernet service in a kind of dense wave division multipurpose dwdm system is provided, comprise: the first function of exchange service board, it is arranged at first and converges in edge device, for Ethernet service message being packaged into optical channel delivery unit OTU
2frame transmits into dwdm system to be measured; The second function of exchange service board, it is arranged at second and converges in edge device, receives by the OTU of dwdm system for attempting
2frame, and deblocking is dressed up Ethernet service message; Webmaster, for calculating within the testing time, the difference of the reception total amount of the Ethernet service message of the transmission total amount of the Ethernet service message of the first function of exchange service board and the second function of exchange service board, statistics obtains the packet loss amount of Ethernet service in dwdm system.
According to a further aspect in the invention, provide the method for detecting packet loss of Ethernet service in a kind of dense wave division multipurpose dwdm system, having comprised: Ethernet service message has been packaged into optical channel delivery unit OTU by the first function of exchange service board
2frame transmits into dwdm system to be measured; The second function of exchange service board is attempted receiving by the OTU of dwdm system
2frame, and deblocking is dressed up Ethernet service message; Webmaster calculated within the testing time, the difference of the reception total amount of the Ethernet service message of the transmission total amount of the Ethernet service message of the first function of exchange service board and the second function of exchange service board, statistics obtains the packet loss amount of Ethernet service in dwdm system.
By the present invention, converging of Service Access point by the dwdm system to be measured and destination node configures respectively a function of exchange service board on edge device, this function of exchange service board is directly integrated in equipment, therefore avoided in correlation technique, needing to carry the inconvenience of test instrumentation, reached convenient, fast, detected effect cheaply; In addition, calculating difference and the statistics packet loss of giving out a contract for a project with packet receiving is to be realized by webmaster, thereby has utilized the inherent function structure of network, has realized the automation of packet loss detection.
Brief description of the drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the schematic diagram of the packet loss detection system of Ethernet service in the dwdm system of the embodiment of the present invention;
Fig. 2 is the internal structure schematic diagram of function of exchange service board according to the preferred embodiment of the invention;
Fig. 3 is the port schematic diagram of function of exchange service board according to the preferred embodiment of the invention;
Fig. 4 is the schematic diagram of webmaster according to the preferred embodiment of the invention;
Fig. 5 is the two-way Ethernet service packet loss detection system environments schematic diagram according to the embodiment of the present invention;
Fig. 6 is according to the flow chart of the method for detecting packet loss of Ethernet service in the dwdm system of the embodiment of the present invention;
Fig. 7 is according to the flow chart of the configuration function of exchange service board of the embodiment of the present invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.
Fig. 1 is according to the schematic diagram of the packet loss detection system of Ethernet service in the dwdm system of the embodiment of the present invention, comprising:
The first function of exchange service board 102, it is arranged at first and converges in edge device 10, for Ethernet service message being packaged into optical channel delivery unit OTU
2frame (bandgap wavelength is suitable for being transmitted in dwdm system) transmits into dwdm system to be measured;
The second function of exchange service board 202, it is arranged at second and converges in edge device 20, receives by the OTU of above-mentioned dwdm system for attempting
2frame, and deblocking is dressed up Ethernet service message;
Webmaster 30, for calculating within the testing time, the transmission total amount SUM of the Ethernet service message of the first function of exchange service board 102
tXreception total amount SUM with the Ethernet service message of the second function of exchange service board 202
rXdifference SUM
Δ, statistics obtains the packet loss amount of Ethernet service in dwdm system.
In correlation technique, detect the packet drop of Ethernet service in dwdm system due to use test instrument, exist and carry and transport inconvenient problem.Converging of the Service Access point of the present embodiment by the dwdm system to be measured and destination node configures respectively a function of exchange service board on edge device, this function of exchange service board is directly integrated in equipment, therefore avoided in correlation technique, needing to carry the inconvenience of test instrumentation, reached convenient, fast, detected effect cheaply; In addition, calculating difference and the statistics packet loss of giving out a contract for a project with packet receiving is to be realized by webmaster, thereby has utilized the inherent function structure of network, has realized the automation of packet loss detection.
Obviously, above-mentioned the first function of exchange service board 102 and the second function of exchange service board 202 are identical equipment, and first converges edge device 10 and second to converge edge device 10 be also the same.Function of exchange service board has the service board of L2 (2 layers) function of exchange.In addition, embodiment shown in above-mentioned Fig. 1 only shows the embodiment of the unidirectional packet loss detection of the first function of exchange service board 102 to second function of exchange service board 202 directions, obviously, above-described embodiment is equally applicable to send to opposite end from the unidirectional packet loss detection of the second function of exchange service board 202 to first function of exchange service board 102 directions and the first function of exchange service board 102 and the second function of exchange service board 202 embodiment (as shown in Figure 5) of the two-way packet loss detection of message simultaneously.
Above-mentioned OTU
2speed standard for business datum in dwdm system: have OTU
0, OTU
1, OTU
2, OTU
2Edeng, can unified representation be OTU
k(wherein, k is subscript for Optical ChannelTransport Unit, optical channel delivery unit, represents speed grade).
Fig. 2 is according to the internal structure schematic diagram of the function of exchange service board of the embodiment of the present invention two.
Preferably, as shown in Figure 2, each function of exchange service board (i.e. the first function of exchange service board 102 and the second function of exchange service board 202) includes: central processing unit (CPU) 1022, be used for constructing test packet, and test packet is sent to exchange chip 1024; Exchange chip 1024, for test packet is carried out to loopback, obtains the Ethernet service message of assigned rate; Optical transfer network OTN business framing chip (OTN FRAMER chip) 1026, for being packaged into OTU by Ethernet service message
2frame.
The preferred embodiment provides the embodiment of the included particular hardware parts of function of exchange service board.By CPU structure test packet, the L2 that by exchange chip, test packet is carried out to Ethernet service again exchanges, test packet is carried out to Ethernet service message that loopback obtains assigned rate (because the speed of the test packet of CPU structure is very low, need to carry out loopback and copy to obtain by exchange chip the Ethernet service message of assigned rate), and Ethernet service message is packaged into OTU
2frame sends in dwdm system to be measured.In Fig. 3, CPU 1022 and exchange chip 1024 communicate by bus interface PCI (PeripheralComponent Interconnection).
Preferably, exchange chip 1024 is also for adding up the transmission total amount SUM of Ethernet service message of above-mentioned the first function of exchange service board 102
tX, and this transmission total amount is reported to webmaster 30.When the convergence device at function of exchange service board place is during as transmitting terminal, exchange chip on it need to be added up the total amount of the Ethernet service message sending within the testing time of specifying, and reports webmaster 30 to carry out packet loss statistics after the testing time arrives.
Preferably, OTN business framing chip 1026 is also for by the OTU receiving
2frame deblocking is dressed up Ethernet service message, and sends to exchange chip 1024; The reception total amount SUM of the Ethernet service message of Ethernet service counting messages the second function of exchange service board 202 that exchange chip 1024 also receives for basis
rX, and report webmaster 30.
The preferred embodiment provides the second function of exchange service board 202 receiving OTU
2after Frame, utilize OTN business framing chip on it and exchange chip to obtain the specific embodiments of the total amount of the Ethernet service message receiving within the testing time of specifying.In the time that reality is implemented, exchange chip can obtain above-mentioned reception total amount SUM
rXafter, abandon the Ethernet service message of having added up.
Fig. 3 is according to the port schematic diagram of the function of exchange service board of the embodiment of the present invention two.
Preferably, as shown in Figure 3, on exchange chip 1024, be provided with even number loopback port (as the loopback port one in Fig. 2 and Fig. 3 and loopback port 2, these ports are Ethernet interface, loopback port has the port of loop fuction), every 2 loopback ports, for the test packet from CPU 1022 receiving is copied by loopback, obtain the Ethernet service message of assigned rate.For example, CPU sends after the test packet of structure to loopback port one or loopback port 2, test packet not stall between this two loopbacks (10GE) port is sent out, the filled band that finally reaches 10GE (being assigned rate) is wide, simultaneously to test port 1 and/or test port 2 inundations on exchange chip.Therefore, test port can send according to speed limit bandwidth the Ethernet service message flow of appointment.
Preferably, on OTN business framing chip 1026, be provided with OTU
2frame transmitting-receiving port is (as the OTU in Fig. 2 and Fig. 3
2frame transmitting-receiving port one and OTU
2frame transmitting-receiving port 2), for sending/receiving OTU
2frame.
Preferably, as shown in Figure 4, webmaster 30 comprises: configuration module 302, enable module 304 and closing module 306, wherein:
Configuration module 302, for accepting user's configuration testing time and the first function of exchange service board 102; Wherein, configuration the first function of exchange service board comprise following at least it
(1) the remote loopback function of the loopback port on configuration the first function of exchange service board, for example, the remote loopback function that port one and port 2 are set becomes loopback port one and loopback port 2, and close the MAC address learning function of loopback port one and loopback port 2, make message can be flooded to other port, can mutually not forward down always; Like this, the port that has been configured loop fuction is loopback port just can obtain by loopback assigned rate Ethernet service message from the test packet of CPU;
(2) create test VLAN, for producing broadcast storm at this test VLAN, in this test VLAN, include the OTU on loopback port and the first function of exchange service board that configures remote loopback function
2frame transmitting-receiving port, for example, arranges loopback port one, loopback port 2 and OTU
2frame transmitting-receiving port one is tested in VLAN at this, and only belongs to this test VLAN, in this test VLAN, does not comprise any other port.Like this, exchange chip obtains just only can being flooded to the OTU that joins same test VLAN after the Ethernet service message of assigned rate
2frame transmitting-receiving port;
(3) configure the test packet that CPU will construct, comprise source/destination MAC, length, the message body content of configuration testing message; Like this, CPU can be according to the object MAC of above-mentioned configuration, source MAC, message length and message body composition of content test packet, but the VLAN mark of test packet must use test VLAN to ensure that message can not be dropped.If the message sending need to be with VLAN label, only need after test VLAN label, add the VLAN label of wishing transmission, at OTU
2frame transmitting-receiving port one is removed this test VLAN label.Like this, CPU, in the time of structure test packet, will construct according to above-mentioned configuration the test packet of any type;
(4) configuration OTU
2the filtering rule of Frame transmitting-receiving port and transmission OTU
2the speed limit of Frame, filtering rule is to abandon all messages that receive, for example, according to sending bandwidth, at OTU
2the Frame transmitting-receiving port one setting speed limit of giving out a contract for a project, and ACL filtering rule is set to abandon all messages that enter this port, prevent that packet receiving message repeating is to loopback port one and loopback port 2;
Enable module 304, enables the first function of exchange service board 102 and sends OTU for accepting user
2frame; Closing module 306 is closed the second function of exchange service board 202 after arriving in the testing time.Like this, can obtain the packet drop within the testing time of specifying.
Obviously, from the embodiment of the unidirectional packet loss detection of the second function of exchange service board 202 to first function of exchange service board 102 directions, configuration module 302 is also for configuring the second function of exchange service board 202, enable module 304 is also for enabling the second function of exchange service board 202, and closing module 306 is also closed the first function of exchange service board 102 after arriving in the testing time.In the embodiment of two-way packet loss detection, configuration module 302 is also for configure the first function of exchange service board 102 and the second function of exchange service board 202 simultaneously, enable module 304 is also for enabling the first function of exchange service board 102 and the second function of exchange service board 202, and closing module 306 is also closed the first function of exchange service board 102 and the second function of exchange service board 202 after arriving in the testing time.
Preferably, webmaster 30 also comprises: display module 308, sends total amount SUM for showing
tX, receive total amount SUM
rX, and difference SUM
Δ.Like this, be conveniently used for checking these information, understand packet drop, and carry out follow-up positioning problems.
Fig. 6 is according to the flow chart of the method for detecting packet loss of Ethernet service in the dwdm system of the embodiment of the present invention, comprises the following steps:
Step S602, Ethernet service message is packaged into optical channel delivery unit OTU by the first function of exchange service board
2frame transmits into dwdm system to be measured;
Step S604, the second function of exchange service board is attempted receiving by the OTU of dwdm system
2frame, and deblocking is dressed up Ethernet service message;
Step S606, webmaster calculated within the testing time, the transmission total amount SUM of the Ethernet service message of the first function of exchange service board
tXreception total amount SUM with the Ethernet service message of the second function of exchange service board
rXdifference SUM
Δ, statistics obtains the packet loss amount of Ethernet service in dwdm system.
On the Service Access point of the present embodiment by the dwdm system to be measured and destination node, configure respectively a function of exchange service board, for Ethernet service message is encapsulated in to OTU
2frame transmits into dwdm system to be measured in (bandgap wavelength is suitable for being transmitted in dwdm system), and by the OTU receiving
2frame deblocking is dressed up Ethernet service message, and add up packet drop by the transmission total amount of calculating the Ethernet service message within the testing time of specifying with the difference that receives total amount, thereby substitute test instrumentation with function of exchange service board, reached convenient, fast, detected effect cheaply.
Preferably, step S602 comprises: central processing unit structure test packet, and test packet is sent to exchange chip; Exchange chip carries out loopback to test packet, obtains the Ethernet service message of assigned rate, and by the transmission total amount SUM of the Ethernet service message sending within the above-mentioned testing time
tXreport webmaster; Ethernet service message is packaged into OTU by optical transfer network OTN business framing chip
2frame.
Step S604 comprises: OTN business framing chip is by the OTU receiving
2frame deblocking is dressed up Ethernet service message, and sends to exchange chip; Exchange chip receives total amount SUM according to the Ethernet service counting messages receiving
rX, and report webmaster.
As shown in Figures 2 and 3, having the function of exchange service board of L2 function of exchange can be by 24 Ethernet interfaces (be port one to port 24) in Fig. 2 and Fig. 3,2 OTU
2frame transmitting-receiving port composition.Use method for detecting packet loss as shown in Figure 6 can realize unidirectional and two-way OTU
2the packet loss detection of business.
Unidirectionally (converge edge device 102 from first and converge edge device 202 to second, or converge edge device 202 from first and converge edge device 102 to first) schematic diagram of the packet loss detection system of Ethernet service as shown in Figure 1, concrete testing procedure is as follows:
Step 1, is configured in 2 function of exchange service boards (its structure as shown in Figures 2 and 3) respectively Network Service Access Point (for example the first function of exchange service board 102 is configured in as first of access point and converges edge device 10) and Network destination node (for example the second function of exchange service board 202 is configured in as second of destination node and converges edge device 20) and detects the service conditions in basin;
Step 2 configures the first function of exchange service board 102 on webmaster 30, and as shown in Figure 7, layoutprocedure comprises the following steps:
Step S702, the remote loopback function that port one and port 2 are set makes it be called loopback port;
Step 704, closes the MAC address learning function that loopback port one and loopback port 2 are set, and makes message can be flooded to other port;
Step 706, creates test VLAN, for producing broadcast storm at this test VLAN;
Step 708, arranges loopback port one, loopback port 2 and OTU
2frame transmitting-receiving port one is tested in VLAN at this, and only belongs to this test VLAN, in this test VLAN, does not comprise any other port;
Step 710, arranges object MAC, source MAC, message length and the message body content of the test packet that CPU will construct.But the necessary use test VLAN of VLAN mark, ensures that message can not be dropped.If the message sending need to be with VLAN label, only need after test VLAN label, add the VLAN label of wishing transmission, at the OTU of the first function of exchange service board 102
2frame transmitting-receiving port one is removed this test VLAN label;
Step 712, according to sending bandwidth, at the OTU of the first function of exchange service board 102
2the Frame transmitting-receiving port one setting speed limit of giving out a contract for a project;
Step 714, at the OTU of the first function of exchange service board 102
2frame transmitting-receiving port one arranges ACL filtering rule and abandons all messages that enter this port, prevents that packet receiving message repeating is to loopback port one and loopback port 2.
Step 3, on webmaster 30 by the OTU of the first function of exchange service board 102
2frame transmitting-receiving port one is closed, and removes port statistics.
Step 4 is removed the receiving statistics of the second function of exchange service board 202, and is confirmed without packet receiving on webmaster 30.
Step 5 enables the OTU of the first function of exchange service board 102 on webmaster 30
2frame transmitting-receiving port one.CPU sends after the test packet of structure to loopback port one or 2, and test packet not stall between these two loopback 10GE ports is sent out, and the filled band that finally reaches 10GE is wide, simultaneously to test port 1 inundation.Therefore, test port 1 can send according to speed limit bandwidth the Ethernet service stream of appointment.And this Ethernet service message flow is encapsulated as OTU by the OTN FRAMER chip being connected with the test port 1 of exchange chip
2frame, sends out into dwdm system to be measured from test access point;
Step 6, the testing time to after close the OTU of the first function of exchange service board 102
2frame transmitting-receiving port one;
Step 7, checks the transmission total amount SUM of the Ethernet service message that the exchange chip of the first function of exchange service board 102 reports by webmaster
tXthe reception total amount SUM of the Ethernet service message reporting with the exchange chip of the second function of exchange service board 202
rX, calculate both difference SUM
Δrelatively packet drop.
It is two-way that (first converges edge device 102 and second converges edge device 202 simultaneously to opposite end transmission OTU
2frame) Ethernet service loss packet test system schematic diagram as shown in Figure 5, concrete testing procedure is as follows:
Step 1, is configured in 2 function of exchange service boards Network Service Access Point and destination node and detects the service conditions in basin;
Step 2 configures the first function of exchange service board 102 and the first function of exchange service board 202 according to the flow process shown in Fig. 7 on webmaster 30;
Step 3, on webmaster by the OTU of the first function of exchange service board 102 and the first function of exchange service board 202
2frame transmitting-receiving port shutdown, and remove port statistics;
Step 4 enables the OTU of the first function of exchange service board 102 and the first function of exchange service board 202 on webmaster
2the sending function of Frame transmitting-receiving port;
Step 5, the testing time to after close the OTU of the first function of exchange service board 102 and the first function of exchange service board 202
2the sending function of Frame transmitting-receiving port;
Step 6, check the transmission total amount of the Ethernet service message on the both direction that the exchange chip of the first function of exchange service board 102 and the first function of exchange service board 202 reports and receive total amount by webmaster, calculating respectively difference on both direction with more two-way packet drop.
Use said method, webmaster can detect the packet drop of the flow direction of business in whole basin rapidly.
As can be seen from the above description, the present invention has realized following technique effect: use function of exchange service board to substitute test instrumentation, and utilize Ethernet broadcast storm to produce the OTU of any bandwidth
2frame, and judge network quality according to the receiving statistics detection business packet drop of opposite end, thus realize packet loss detection effect easily and efficiently.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that multiple calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out shown or described step with the order being different from herein, or they are made into respectively to each integrated circuit modules, or the multiple modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a packet loss detection system for Ethernet service in dense wave division multipurpose dwdm system, is characterized in that, comprising:
The first function of exchange service board, it is arranged at first and converges in edge device, for Ethernet service message being packaged into optical channel delivery unit OTU
2frame transmits into dwdm system to be measured;
The second function of exchange service board, it is arranged at second and converges in edge device, receives by the OTU of described dwdm system for attempting
2frame, and deblocking is dressed up Ethernet service message;
Webmaster, for calculating within the testing time, the difference of the reception total amount of the Ethernet service message of the exchange chip statistics in transmission total amount and the described second function of exchange service board of the Ethernet service message of the exchange chip statistics in described the first function of exchange service board, statistics obtains the packet loss amount of Ethernet service in described dwdm system.
2. system according to claim 1, is characterized in that, each described function of exchange service board includes:
Central processing unit, for constructing test packet, and sends to exchange chip by described test packet;
Described exchange chip, for described test packet is carried out to loopback, obtains the described Ethernet service message of assigned rate;
Optical transfer network OTN business framing chip, for being packaged into described OTU by described Ethernet service message
2frame.
3. system according to claim 2, is characterized in that, described exchange chip is also for adding up described transmission total amount, and described transmission total amount is reported to described webmaster.
4. system according to claim 2, is characterized in that,
Described OTN business framing chip is also for by the OTU receiving
2frame deblocking is dressed up Ethernet service message, and sends to described exchange chip;
Described exchange chip also receives total amount described in the basis Ethernet service counting messages receiving, and reports described webmaster.
5. system according to claim 2, it is characterized in that, on described exchange chip, be provided with even number loopback port, every 2 described loopback ports, for the test packet from described central processing unit receiving is copied by loopback, obtain the Ethernet service message of described assigned rate.
6. system according to claim 2, is characterized in that, on described OTN business framing chip, is provided with OTU
2frame transmitting-receiving port, for OTU described in sending/receiving
2frame.
7. according to the system described in claim 5 or 6, it is characterized in that, described webmaster comprises:
Configuration module, configures described testing time and described the first function of exchange service board for accepting user; Wherein, described the first function of exchange service board of described configuration comprise following one of at least:
Configure the remote loopback function of the loopback port on described the first function of exchange service board;
Create test virtual LAN VLAN, in described test VLAN, include the OTU on loopback port and described the first function of exchange service board that configures remote loopback function
2frame transmitting-receiving port;
Configure the test packet that described central processing unit will be constructed, comprise source/destination MAC, length, the message body content of configuration testing message;
Configure described OTU
2frame is received and dispatched the filtering rule of port and is sent described OTU
2the speed limit of Frame, described filtering rule is to abandon all messages that receive;
Enable module, enables described the first function of exchange service board and sends described OTU for accepting user
2frame;
Closing module is closed described the second function of exchange service board after arriving in the described testing time.
8. system according to claim 1, is characterized in that, described webmaster also comprises:
Display module, for showing described transmission total amount, described reception total amount and described difference.
9. a method for detecting packet loss for Ethernet service in dense wave division multipurpose dwdm system, is characterized in that, comprising:
Ethernet service message is packaged into optical channel delivery unit OTU by the first function of exchange service board
2frame transmits into dwdm system to be measured;
The second function of exchange service board is attempted receiving by the OTU of described dwdm system
2frame, and deblocking is dressed up Ethernet service message;
Webmaster calculated within the testing time, the difference of the reception total amount of the Ethernet service message of the exchange chip statistics in transmission total amount and the described second function of exchange service board of the Ethernet service message of the exchange chip statistics in described the first function of exchange service board, statistics obtains the packet loss amount of Ethernet service in described dwdm system.
10. method according to claim 9, is characterized in that, Ethernet service message is packaged into optical channel delivery unit OTU by the first function of exchange service board
2frame transmits into dwdm system to be measured and comprises:
Central processing unit structure test packet, and described test packet is sent to exchange chip;
Described exchange chip carries out loopback to described test packet, obtains the described Ethernet service message of assigned rate;
Described Ethernet service message is packaged into described OTU by optical transfer network OTN business framing chip
2frame.
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| CN106100941B (en) * | 2016-08-29 | 2019-04-26 | 迈普通信技术股份有限公司 | Method and device based on communication reliability between distributed system test board |
| CN106506265B (en) * | 2016-10-25 | 2019-08-06 | 杭州迪普科技股份有限公司 | Detection fpga chip hangs dead method and device |
| CN107171720A (en) * | 2017-05-27 | 2017-09-15 | 烽火通信科技股份有限公司 | The Packet Service alarm alignment system and method for a kind of POTN equipment |
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