CN101834665A - 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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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, 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 universal day by day and user of business is to the continuous increase of the demand of the network bandwidth, impel the application of DWDM (DenseWavelength Division Multiplexing, dense wave division multipurpose) to sink in the MAN.At present, having more than 80% in the access service of dwdm system is Ethernet service, and therefore, Ethernet service has become the most important bearer service of dwdm system.
DWDM network system more complicated, the OTN of each manufacturer (Optical TransportNetwork, optical transfer network) technical standard is not quite similar again, makes interconnecting between the business tend to exist a lot of problems.Like this, it is very necessary taking certain mode to come the business in the dwdm system is carried out packet loss detection.
Method for detecting packet loss according to correlation technique is to use test instrumentation to come orientation problem, generally be to connect a test instrumentation at network one end (being Network Service Access Point), the other end (being the Network destination node) connects another test instrumentation, two test instrumentations send test stream to the opposite end respectively, then by checking that packet drop carries out packet loss detection.But, adopt this method to have the problem of carrying and transporting inconvenience.
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, to address the above problem at least.
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 the edge device, is used for the Ethernet service message is 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 the edge device, is used to attempt receiving the OTU by dwdm system
2Frame, and deblocking is dressed up the Ethernet service message; Webmaster, be used for calculating in 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 the 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: the first function of exchange service board is packaged into optical channel delivery unit OTU with the Ethernet service message
2Frame transmits into dwdm system to be measured; The second function of exchange service board attempts receiving the OTU by dwdm system
2Frame, and deblocking is dressed up the Ethernet service message; Webmaster calculated in 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 the dwdm system.
By the present invention, dispose a function of exchange service board on the edge device respectively by Service Access point and converging of destination node at dwdm system to be measured, this function of exchange service board directly is integrated in the equipment, the inconvenience of therefore having avoided needing in the correlation technique to carry test instrumentation has reached convenient, fast, has detected effect cheaply; In addition, calculating the 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.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the packet loss detection system of Ethernet service in the dwdm system of the embodiment of the 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 invention;
Fig. 6 is the flow chart according to the method for detecting packet loss of Ethernet service in the dwdm system of the embodiment of the invention;
Fig. 7 is the flow chart according to the configuration function of exchange service board of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up 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 invention, comprising:
The first function of exchange service board 102, it is arranged at first and converges in the edge device 10, is used for the Ethernet service message is packaged into optical channel delivery unit OTU
2Frame (bandgap wavelength is suitable for being transmitted in the 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 the edge device 20, is used to attempt receiving the OTU by above-mentioned dwdm system
2Frame, and deblocking is dressed up the Ethernet service message;
Webmaster 30 is used for calculating in the testing time 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 the dwdm system.
Because the use test instrument detects the packet drop of Ethernet service in the dwdm system, there is the problem of carrying and transporting inconvenience in the correlation technique.Present embodiment disposes a function of exchange service board respectively by Service Access point and converging of destination node at dwdm system to be measured on the edge device, this function of exchange service board directly is integrated in the equipment, the inconvenience of therefore having avoided needing in the correlation technique to carry test instrumentation has reached convenient, fast, has detected effect cheaply; In addition, calculating the 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, the first above-mentioned function of exchange service board 102 is identical equipment with the second function of exchange service board 202, and first converges edge device 10 and second to converge edge device 10 also be the same.The function of exchange service board promptly has the service board of L2 (2 layers) function of exchange.In addition, above-mentioned embodiment shown in Figure 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 boards, 202 directions, obviously, the foregoing description is equally applicable to send to the opposite end simultaneously from the unidirectional packet loss detection of the second function of exchange service board, 202 to first function of exchange service boards, 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.
Above-mentioned OTU
2Speed standard for business datum in the dwdm system: OTU is arranged
0, OTU
1, OTU
2, OTU
2EDeng, can unify to be expressed as OTU
k(wherein, k is a subscript for Optical ChannelTransport Unit, optical channel delivery unit, the expression speed grade).
Fig. 2 is the internal structure schematic diagram according to the function of exchange service board of the embodiment of the 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 is used to construct test packet, and test packet is sent to exchange chip 1024; Exchange chip 1024 is used for test packet is carried out loopback, obtains the Ethernet service message of assigned rate; The professional framing chip of optical transfer network OTN (OTN FRAMER chip) 1026 is used for the Ethernet service message is packaged into OTU
2Frame.
The preferred embodiment provides the embodiment of the included particular hardware parts of function of exchange service board.By CPU structure test packet, by exchange chip test packet is carried out the L2 exchange of Ethernet service again, promptly test packet is carried out loopback and obtain the Ethernet service message of assigned rate (because the speed of the test packet of CPU structure is very low, need carry out loopback by exchange chip duplicates to obtain the Ethernet service message of assigned rate), and the Ethernet service message is packaged into OTU
2Frame sends in the dwdm system to be measured.Among Fig. 3, CPU 1022 and exchange chip 1024 communicate by bus interface PCI (PeripheralComponent Interconnection).
Preferably, exchange chip 1024 also is used to add up the transmission total amount SUM of the Ethernet service message of the above-mentioned first function of exchange service board 102
TX, and should send total amount and report webmaster 30.When the convergence device at function of exchange service board place during as transmitting terminal, exchange chip on it need be added up the total amount of the Ethernet service message that sends in the testing time of appointment, and reports webmaster 30 so that carry out the packet loss statistics after the testing time arrives.
Preferably, the professional framing chip 1026 of OTN also is used for the OTU that will receive
2The Frame deblocking is dressed up the Ethernet service message, and sends to exchange chip 1024; Exchange chip 1024 also is used for the reception total amount SUM according to the Ethernet service message of the Ethernet service counting messages second function of exchange service board 202 that receives
RX, and report webmaster 30.
The preferred embodiment provides the second function of exchange service board 202 receiving OTU
2Behind the Frame, utilize professional framing chip of OTN on it and exchange chip to obtain the specific embodiments of the total amount of the Ethernet service message that in the testing time of appointment, receives.When reality was implemented, exchange chip can obtain above-mentioned reception total amount SUM
RXAfter, abandon the Ethernet service message of having added up.
Fig. 3 is the port schematic diagram according to the function of exchange service board of the embodiment of the invention two.
Preferably, as shown in Figure 3, exchange chip 1024 is provided with even number loopback port (as loopback port one among Fig. 2 and Fig. 3 and loopback port 2, these ports are Ethernet interface, the loopback port promptly has the port of loop fuction), per 2 loopback ports are used for the test packet from CPU 1022 that receives is duplicated by loopback, obtain the Ethernet service message of assigned rate.For example, CPU is behind the test packet of loopback port one or loopback port 2 transmission structures, test packet not stall between this two loopbacks (10GE) port is sent out, and the filled band that finally reaches 10GE (being assigned rate) is wide, simultaneously test port 1 and/or test port 2 inundations on exchange chip.Therefore, test port can send the Ethernet service message flow of appointment according to the speed limit bandwidth.
Preferably, the professional framing chip 1026 of OTN is provided with OTU
2Frame transmitting-receiving port is (as the OTU among Fig. 2 and Fig. 3
2Frame transmitting-receiving port one and OTU
2Frame transmitting-receiving port 2), be used for transmission/reception OTU
2Frame.
Preferably, as shown in Figure 4, webmaster 30 comprises: configuration module 302, enable module 304 and closing module 306, wherein:
(1) the remote loopback function of the loopback port on the configuration first function of exchange service board, for example, the remote loopback function that port one and port 2 are set makes it become loopback port one and loopback port 2, and the MAC address learning function of closing loopback port one and loopback port 2, make message can be flooded to other port, can not transmit down mutually always; Like this, the port that has been configured loop fuction is the loopback port just can obtain assigned rate by loopback from the test packet of CPU an Ethernet service message;
(2) create test VLAN, be used for producing broadcast storm, include the loopback port that disposes the remote loopback function and the OTU on the first function of exchange service board among this test VLAN at this test VLAN
2Frame transmitting-receiving port for example, is provided with loopback port one, loopback port 2 and OTU
2Frame transmitting-receiving port one is tested among the VLAN at this, and only belongs to this test VLAN, does not comprise any other port among this test VLAN.Like this, exchange chip obtains just only it to be flooded to the OTU that joins same test VLAN behind the Ethernet service message of assigned rate
2Frame transmitting-receiving port;
(3) dispose the test packet that CPU will construct, comprise source/purpose MAC, length, the message body content of configuration testing message; Like this, CPU can be according to purpose MAC, source MAC, message length and the message body composition of content test packet of above-mentioned configuration, but the VLAN mark of test packet must use test VLAN to guarantee that message can not be dropped.If the message of transmission need be with the VLAN label, only need behind test VLAN label, to add the VLAN label that hope sends, at OTU
2Frame transmitting-receiving port one is removed this test VLAN label.Like this, CPU will construct the test packet of any type according to above-mentioned configuration when the structure test packet;
(4) configuration OTU
2The filtering rule of Frame transmitting-receiving port and transmission OTU
2The speed limit of Frame, filtering rule are to abandon the message that all receive, for example, and according to sending bandwidth, at OTU
2The Frame transmitting-receiving port one setting speed limit of giving out a contract for a project, and the ACL filtering rule is set to abandon the message that all enter this port, prevent that the packet receiving message is transmitted to loopback port one and loopback port 2;
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 boards, 102 directions, configuration module 302 also is used to dispose the second function of exchange service board 202, enable module 304 also is used to enable the second function of exchange service board 202, and closing module 306 also is used for closing the first function of exchange service board 102 after the testing time arrives.In the embodiment of two-way packet loss detection, configuration module 302 also is used for disposing simultaneously the first function of exchange service board 102 and the second function of exchange service board 202, enable module 304 also is used to enable the first function of exchange service board 102 and the second function of exchange service board 202, and closing module 306 also is used for closing the first function of exchange service board 102 and the second function of exchange service board 202 after the testing time arrives.
Preferably, webmaster 30 also comprises: display module 308 is used for showing transmission total amount SUM
TX, receive total amount SUM
RX, and difference SUM
ΔLike this, conveniently be used to check 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 invention, may further comprise the steps:
Step S602, the first function of exchange service board is packaged into optical channel delivery unit OTU with the Ethernet service message
2Frame transmits into dwdm system to be measured;
Step S604, the second function of exchange service board attempt receiving the OTU by dwdm system
2Frame, and deblocking is dressed up the Ethernet service message;
Step S606, webmaster calculated in 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 the dwdm system.
Present embodiment is used for the Ethernet service message is encapsulated in OTU by dispose a function of exchange service board respectively on the Service Access point of dwdm system to be measured and destination node
2Frame transmits into dwdm system to be measured in (bandgap wavelength is suitable for being transmitted in the dwdm system), and with the OTU that receives
2The Frame deblocking is dressed up the Ethernet service message, and add up packet drop by the transmission total amount of calculating the Ethernet service message in the testing time of appointment and the difference that receives total amount, thereby substitute test instrumentation with the function of exchange service board, reached convenient, fast, detected effect cheaply.
Preferably, step S602 comprises: central processing unit is constructed 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 the transmission total amount SUM of the Ethernet service message that will send in the above-mentioned testing time
TXReport webmaster; The professional framing chip of optical transfer network OTN is packaged into OTU with the Ethernet service message
2Frame.
Step S604 comprises: the professional framing chip of OTN is with the OTU that receives
2The Frame deblocking is dressed up the Ethernet service message, and sends to exchange chip; Exchange chip receives total amount SUM according to the Ethernet service counting messages that receives
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 among Fig. 2 and Fig. 3 port one to port 24), 2 OTU
2Frame transmitting-receiving port is formed.Use method for detecting packet loss as shown in Figure 6 can realize unidirectional and two-way OTU
2Professional packet loss detection.
The schematic diagram of the packet loss detection system of unidirectional (converge edge device 102 from first and converge edge device 202 to second, perhaps converge edge device 202 and converge edge device 102) Ethernet service to first from first as shown in Figure 1, concrete testing procedure is as follows:
Step 1 is configured in the service conditions that 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) detect the basin respectively with 2 function of exchange service boards (its structure as shown in Figures 2 and 3);
Step 2, the configuration first function of exchange service board 102 on webmaster 30, as shown in Figure 7, layoutprocedure may further comprise the steps:
Step S702, the remote loopback function that port one and port 2 are set makes it be called the loopback port;
Step 704 is closed 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 is created test VLAN, is used for producing broadcast storm at this test VLAN;
Step 710 is provided with purpose 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 guarantees that message can not be dropped.If the message of transmission need be with the VLAN label, only need behind test VLAN label, to add the VLAN label that hope sends, 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 is 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 is at the OTU of the first function of exchange service board 102
2Frame transmitting-receiving port one is provided with the ACL filtering rule and abandons the message that all enter this port, prevents that the packet receiving message is transmitted to loopback port one and loopback port 2.
Step 3, on webmaster 30 with 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 on webmaster 30, and is confirmed no packet receiving.
Step 5 enables the OTU of the first function of exchange service board 102 on webmaster 30
2Frame transmitting-receiving port one.CPU is after loopback port one or 2 sends the test packet of structure, 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 the Ethernet service stream of appointment according to the speed limit bandwidth.And the OTN FRAMER chip that is connected with the test port 1 of exchange chip is encapsulated as OTU with this Ethernet service message flow
2Frame is sent 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 is checked 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 that reports with the exchange chip of the second function of exchange service board 202
RX, calculate both difference SUM
ΔCompare packet drop.
It is two-way that (first converges edge device 102 and second converges edge device 202 simultaneously to opposite end transmission OTU
2The schematic diagram of the packet loss test macro of Ethernet service Frame) as shown in Figure 5, concrete testing procedure is as follows:
Step 1 is configured in the service conditions that Network Service Access Point and destination node detect the basin with 2 function of exchange service boards;
Step 2 disposes the first function of exchange service board 102 and the first function of exchange service board 202 according to flow process shown in Figure 7 on webmaster 30;
Step 3, on webmaster with 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, calculate difference on the both direction respectively with more two-way packet drop.
Use said method, webmaster can detect the packet drop of the flow direction professional in the whole basin apace.
As can be seen from the above description, the present invention has realized following technique effect: use the function of exchange service board to substitute test instrumentation, and utilize the Ethernet broadcast storm to produce the OTU of any bandwidth
2Frame, and add up the professional packet drop of detection according to the receiving of opposite end and judge network quality, thereby realized packet loss detection effect easily and efficiently.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the packet loss detection system of Ethernet service in the 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 the edge device, is used for the Ethernet service message is 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 the edge device, is used to attempt receiving the OTU by described dwdm system
2Frame, and deblocking is dressed up the Ethernet service message;
Webmaster, be used for calculating in 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 described first function of exchange service board and the described second function of exchange service board, statistics obtains the packet loss amount of Ethernet service in the described dwdm system.
2. system according to claim 1 is characterized in that, each described function of exchange service board includes:
Central processing unit is used to construct test packet, and described test packet is sent to exchange chip;
Described exchange chip is used for described test packet is carried out loopback, obtains the described Ethernet service message of assigned rate;
The professional framing chip of optical transfer network OTN is used for being packaged into described OTU with described with big network service message
2Frame.
3. system according to claim 2 is characterized in that, described exchange chip also is used to add up described transmission total amount, and described transmission total amount is reported described webmaster.
4. system according to claim 2 is characterized in that,
The professional framing chip of described OTN also is used for the OTU that will receive
2The Frame deblocking is dressed up the Ethernet service message, and sends to described exchange chip;
Described exchange chip also is used for according to the described reception total amount of Ethernet service counting messages that receives, and reports described webmaster.
5. system according to claim 2, it is characterized in that, described exchange chip is provided with even number loopback port, per 2 described loopback ports are used for the test packet from described central processing unit that receives is duplicated by loopback, obtain the Ethernet service message of described assigned rate.
6. system according to claim 2 is characterized in that, the professional framing chip of described OTN is provided with OTU
2Frame transmitting-receiving port is used to send/receive described OTU
2Frame.
7. according to claim 5 or 6 described systems, it is characterized in that described webmaster comprises:
Configuration module is used to accept the user and disposes described testing time and the described first function of exchange service board; Wherein, the described first function of exchange service board of described configuration comprise following one of at least:
Dispose the remote loopback function of the loopback port on the described first function of exchange service board;
Create the test virtual LAN VLAN, include the loopback port that disposes the remote loopback function and the OTU on the described first function of exchange service board among the described test VLAN
2Frame transmitting-receiving port;
Dispose the test packet that described central processing unit will be constructed, comprise source/purpose MAC, length, the message body content of configuration testing message;
Dispose 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 are to abandon the message that all receive;
Enable module is used to accept the user and enables the described first function of exchange service board and send described OTU
2Frame;
Closing module is used for closing the described second function of exchange service board after the described testing time arrives.
8. system according to claim 1 is characterized in that, described webmaster also comprises:
Display module is used to show described transmission total amount, described reception total amount and described difference.
9. the method for detecting packet loss of Ethernet service in the dense wave division multipurpose dwdm system is characterized in that, comprising:
The first function of exchange service board is packaged into optical channel delivery unit OTU with the Ethernet service message
2Frame transmits into dwdm system to be measured;
The second function of exchange service board attempts receiving the OTU by described dwdm system
2Frame, and deblocking is dressed up the Ethernet service message;
Webmaster calculated in 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 described first function of exchange service board and the described second function of exchange service board, statistics obtains the packet loss amount of Ethernet service in the described dwdm system.
10. method according to claim 9 is characterized in that, the first function of exchange service board is packaged into optical channel delivery unit OTU with the Ethernet service message
2Frame transmits into dwdm system to be measured and comprises:
Central processing unit is constructed 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;
The professional framing chip of optical transfer network OTN is packaged into described OTU with described Ethernet service message
2Frame.
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| CN106100941A (en) * | 2016-08-29 | 2016-11-09 | 迈普通信技术股份有限公司 | Method and device based on distributed system test board intercard communication reliability |
| 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 |
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| CN110022238A (en) * | 2018-01-08 | 2019-07-16 | 深圳市中兴微电子技术有限公司 | A kind of test method and device of Ethernet switching chip |
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