CN105095037A - Wire card, backboard of wire card and wire card test method - Google Patents
Wire card, backboard of wire card and wire card test method Download PDFInfo
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Abstract
The invention relates to the field of communication and discloses a wire card, a backboard of the wire card and a wire card test method. The wire card comprises a processor and a backboard connector, wherein the backboard connector comprises a plurality of interfaces connected to the backboard; the wire card is provided with a testing mode; the processor is configured to generate a test trigger signal and transmit the generated test trigger signal to the backboard through the backboard connector when the wire card is in the testing mode; and a to-be-tested element in the wire card receives a test signal, which is obtained by the backboard according to the test trigger signal, through the backboard connector. Through the technical scheme, the wire card can generate the test trigger signal, so that the wire card is tested through the backboard, and test and functional verification of the wire card and a signal for interaction of the wire card and a management board are implemented without the management board and a backboard system, so that the development efficiency is improved and the hardware development cost is greatly saved.
Description
Technical field
The present invention relates to the communications field, particularly, relate to a kind of line card, the backboard of line card and line card method of testing.
Background technology
Frame type exchanger system, is generally made up of service card, switch fabric card (network board), management board (support redundancy) and back board system.When product development uniting and adjustment or test, complete performance verification or test, need these systems jointly to coordinate.As Fig. 1, simple drafting two passes representative data passage and control and management passage, one such as, in the two passes of each element above represents data channel, below one represents control and management passage, N opens service card (representing with SW in Fig. 1) and respectively data channel is connected to switch fabric card by backboard, control and management signal is connected to management board CM by service card and switch fabric card simultaneously, realizes unified management.
Blade server in bulk density, energy-conservation, application deployment and operation management comparatively traditional server have its obvious advantage, focus on cloud computing, large data, data-center applications and information service field.The legacy network devices enterprise that develops into of blade server brings new opportunity, and blade switch is arisen at the historic moment.The cooperation of server and network equipment manufacturing enterprise, can display one's respective advantages and carry out effective resource consolidation, brings new challenge also to network equipment enterprise.The blade switch that network equipment enterprise produces is as a network access module of blade server, need to be inserted by the unified management of server admin plate by backboard, but the management board of server is developed by server producer, the problem that this modality for co-operation is brought is: blade switch and management board exploitation cannot implementation space and temporal Complete Synchronizations.By backboard, data-signal is connected to blade (Blade) as Fig. 2, N open blade switch (representing with SW in Fig. 2), control and management signal is connected to the management board CM of server by blade switch and blade simultaneously.Complete uniting and adjustment and test implementation are also need backboard and management board and blade switch jointly to coordinate.Actual development process, be connected to control and the data-signal of backboard, when there is no server admin plate and backboard, blade switch cannot guarantee these interface signals and single board design no problem, buy server-side devices to need to expend extra input, improve cost of development.
In currently available technology, test is carried out to line card (such as, service card, blade switch) and mainly contains following two kinds of modes:
1) every money rack product develops independent backboard for different service cards, switch fabric card (network board), management board develop, and system integration and test or test at least ensure management board, switch fabric card, backboard and a service card (or line card);
2) for every money blade switch, develop the test and management plate that is similar to rack product, by independently backboard, data and management channels are connected to management board.This method needs in order to a blade switch (or line card), develops independent management board to coordinate test, increases hardware cost and exploits natural resources.
Above-mentioned two kinds of technical schemes, in exploitation uniting and adjustment process, all need to guarantee that line card, backboard and management board coordinate jointly, and when the uniting and adjustment stage pinpoints the problems, more difficult eliminating are the problems of line card or management board.
For above-mentioned technical matters, in prior art, there is no good solution.
Summary of the invention
The object of this invention is to provide a kind of equipment, this equipment can realize line card test when not having management board.
To achieve these goals, the invention provides a kind of line card, this line card comprises processor and back panel connector, this back panel connector comprises the multiple interfaces be connected with backboard, described line card has test pattern, described processor is configured to when described line card is in described test pattern, produces test trigger signal and by described back panel connector, produced test trigger signal is sent to described backboard; And the element under test in described line card is by the test signal that according to described test trigger signal obtain of described back panel connector reception from described backboard.
Further, the element under test in described line card receives described test signal by the test interface in described multiple interface.
Further, this line card also comprises the switching device be arranged between described element under test and described test interface; And described switching device is configured to the path when described line card is in described test pattern described in conducting between test interface and described element under test.
Further, described switching device can hot plug.
Further, described switching device supports the switching characteristic on 1 road or 2 tunnels, determines gating by control pin.
Another aspect of the present invention, provides a kind of backboard of line card, and this backboard is connected by back panel connector with line card, and described backboard is configured to: receive test trigger signal from described line card; And obtain test signal according to described test trigger signal and described test signal is sent it back described line card.
Further, described test signal is identical with described test trigger signal.
Further, described backboard comprises loopback path, is configured to input described test trigger signal and export described test signal.
Another aspect of the present invention, provide a kind of line card method of testing, described line card is connected with backboard by back panel connector, and the method comprises: line card produces test trigger signal and by described back panel connector, produced test trigger signal is sent to described backboard; And the element under test in described line card is by the test signal that according to described test trigger signal obtain of described back panel connector reception from described backboard.
Further, the element under test in described line card receives described test signal by the test interface of described back panel connector.
Further, wherein said line card comprises the switching device be arranged between described element under test and described test interface; And the method is included in path when described line card is in described test pattern described in conducting between test interface and described element under test.
Pass through technique scheme, line card can produce test trigger signal thus complete the test to line card self by backboard, do not need to rely on management board and back board system and the test and the functional verification that realize line card self and the signal mutual with management board, improve development efficiency, greatly save hardware development cost.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for instructions, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is frame type exchanger system composition schematic diagram;
Fig. 2 is blade server system composition schematic diagram;
Fig. 3 is the line card hardware configuration schematic diagram according to embodiment of the present invention;
Fig. 4 is the line card signal connection diagram according to embodiment of the present invention;
Fig. 5 a-5e illustrates according to the line card breaker in middle device layout of embodiment of the present invention;
Fig. 6 is the line card method of testing process flow diagram according to embodiment of the present invention; And
Fig. 7 is line card method of testing process flow diagram according to the preferred embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Fig. 3 is the line card hardware configuration schematic diagram according to embodiment of the present invention.As shown in Figure 3, a kind of line card provided by the invention (part in Fig. 3 except backboard) can comprise processor (CPU) and back panel connector, and this back panel connector can comprise the multiple interfaces be connected with backboard.Described line card can have test pattern, and normal mode of operation.Processor can be configured to when line card is in described test pattern, produces test trigger signal and by described back panel connector, produced test trigger signal is sent to described backboard; And the element under test in described line card is by the test signal that according to described test trigger signal obtain of described back panel connector reception from described backboard.Wherein, test pattern or the selection of normal mode of operation are in for line card can be realized with hardware configuration by selector switch or be realized by software design patterns.
Pass through technique scheme, line card can produce test trigger signal thus complete the test to line card self by backboard, do not need to rely on management board and back board system and the test and the functional verification that realize line card self and the signal mutual with management board, improve development efficiency, greatly save hardware development cost.
In embodiments, being sent to the test signal of line card from backboard can be identical with the test trigger signal that line card produces.In such embodiment, backboard can provide the signal path of element under test (such as, BP_PLD, CPU etc.) in connecting wire card processor (such as CPU) to line card.
In various embodiments, in order to distinguish the interface of back panel connector, make line card possess test function meeting while line card normally uses, the element under test in line card can receive described test signal by the test interface in described multiple interface.
In a preferred embodiment, this line card can also comprise the switching device (S/W) be arranged between element under test and test interface; Switching device can be configured to the path when described line card is in described test pattern described in conducting between test interface and described element under test.As shown in Figure 4, when switch device conductive, the dotted line path conducting at figure breaker in middle device place can be made.Whether the conducting of switching device can pass through software design patterns, such as, to be controlled or by operator's Non-follow control by enable signal, such control mode by instructions with lower part in describe in detail.
Another aspect of the present invention, provides a kind of backboard of line card, and this backboard can be connected by back panel connector with line card, and described backboard is configured to: receive test trigger signal from line card; And obtain test signal according to described test trigger signal and described test signal is sent it back described line card.In embodiments, backboard can comprise loopback path, as shown in Figure 3, is configured to input described test trigger signal and export described test signal.
Below with reference to Fig. 3, Fig. 4 and Fig. 5 a-Fig. 5 e, principle of the present invention is described in detail.
As shown in Figure 3, the line card that embodiment of the present invention provides can comprise cpu system, Programmable logical controller (ProgrammableLogicDevice, PLD) (such as, BP_PLD, master _ PLD), switching device S/W, exchange chip and back panel connector.
Cpu system can be made up of CPU and storage unit (not shown) and control desk etc., and CPU carries ethernet mac, provides RGMII/SGMII/1000Base-X.Wherein, the Gigabit Media stand-alone interface (ReducedGigabitMediaIndependentInterface, RGMII) of minimizing can be connected to outside single port PHY chip, draws a 1000MMGMT Ethernet interface and installs and uses for download program; 4 road Serial Gigabit Media stand-alone interface (SerialGigabitMediaIndependentInterface, SGMII)/1000Base-X interface draws two-way to backboard, as the out-band channel of management board, can the information such as transfer operation log recording, fault warning, two-way can be reserved and do other function in addition.CPU supports 2 I2C controllers, and UART interface provides control desk (console) port;
CPU is by local bus (localbus) configuration management master _ PLD (Main_PLD) and BP_PLD.Wherein, Main_PLD controls and state acquisition for some function logic realizing mainboard, BP_PLD, as subordinate (Slave) device of I2C bus, defines the control relevant to management board and status register, can carry out some simultaneously and control and state acquisition;
CPU supports PCIE interface, is connected with exchange chip.Exchange chip provides the ethernet port of front and back panels;
Power supply and clock module provide each road voltage and clock for each chip on plate, and from (Standby) for subsequent use power supply of backboard access for BP_PLD and S/W switching device, the upper and lower electricity of mainboard is controlled by BP_PLD;
1. being the signal wire pair transferring to line card from backboard, is the actual signal be connected with management board, as slot signal SW_ID0/1 etc.1. corresponding signal wire is to being connected to BP_PLD, Main_PLD or CPU;
2. be the signal wire pair transferring to BP_PLD from backboard, be fictionalize with actual signal lines to corresponding signal, as TEST_SW_ID0/1;
3. being the signal wire transferring to line card from backboard, is also the actual signal be connected with management board, as the look-at-me INT# that line card converges.3. corresponding signal wire is to being connected to BP_PLD, Main_PLD or CPU;
4. being the signal wire transferring to BP_PLD from backboard, is the signal corresponding with actual signal lines fictionalized, as TEST_INT#;
5. 5., be 6. the signal wire/line pair transferring to CPU from backboard, be wherein the actual signal lines/line pair be connected with management board, be 6. fictionalize to actual signal lines/line to corresponding signal, as being 5. SGMII0, then 6. TEST_SGMII0;
7. be the high speed signal being connected to backboard, as KR/HG etc., for transmitting across card data;
The signal fictionalized is identical with actual backplane signal, uses the undefined NC pin of back panel connector, is connected by backboard.Meanwhile, consider that virtual signal may impact management board system, as voltage pours in down a chimney, virtual signal is all isolated with switching device S/W;
Line card as shown in Figure 3 coordinates backboard composition easy device, can when without management board, and the checking and the problem that realize management board correlation function return, and also can realize the hardware path testing of the control signal mutual with management board, data-signal.To the automatic test of line card, be applicable to the master routine of production test program and client.Under test pattern or state, by software design patterns VIRTUAL_EN=1, the corresponding unlatching of switching device S/W, TEST virtual signal is communicated with, test all can cover the control and management class mutual with management board and data class signal, the hardware system that line card (or service card) is inner can be traveled through, as product information, temperature detection, memory test, flash test, RTC test, panel ethernet port receiving frame and rate mode switch test etc. simultaneously.Under normal mode of operation or master routine state, acquiescence VIRTUAL_EN=0, without the need to software design patterns, the switching device S/W for TEST function closes, isolation TEST signal path.If need to carry out management board functional verification or positioning problems under master routine, manually VIRTUAL_EN can be opened, such as, VIRTUAL_EN is set by the on off state of physical switch, then connect backboard.
In the line card that embodiment of the present invention provides, as shown in Figure 4, wherein dotted line is depicted as virtual link signal to virtual link signal, can be controlled conducting or the cut-off of virtual link path by switching device (S/W).It should be noted that, the switching device S/W described in Fig. 4 does not represent concrete switch number, just describes a kind of trend of signal, and can contain other signal that the present invention do not describe.
The actual signal being connected to backboard mainly contains across card exchange data signals KR, and management controls class signal and comprises signal PRE# in place, principal and subordinate's administer arbitration consequential signal SMC0_SEL/SMC1_SEL, slot signal SW_ID0/SW_ID1, I2C pilot signal SMC0_IIC/SMC1_IIC, reset signal SMC0_RST/SMC1_RST, look-at-me INT#, outband management interface SGMII0/SGMII1 etc.These actual signals, by backboard, by switching device S/W virtual link to BP_PLD and CPU, simulate the hardware path of management board.
Gauge tap device S/W realizes gating or the closedown of respective channel.The design proposal of switching device describes as shown in Fig. 5 a-5e.The expression being wherein designated BP before signal is connected to back panel connector end, and mark, containing the expression virtual link signal of TEST, is connected to BP_PLD, Main_PLD or CPU; All switching device S/W support the switching characteristic on 1 road or 2 tunnels, and gating determines by controlling pin EN, and EN is Low level effective, is defaulted as high level, and namely switch close access disconnects.As S/W3,1A1,1A2 are controlled by EN3,1B1,1B2 are controlled by EN4.In addition, S/W has hot swap characteristics, can protect master chip not by overcurrent, the overvoltage impact of swapping process; The EN1 acquiescence of S/W1 opens (i.e. low level), and SMC_SEL signal is that the arbitration result of management board outputs signal, and which determines the control of principal and subordinate's management board to I2C bus and out-band channel.Its true value and implication as shown in table 1 below.
Table 1SMC_SEL truth table
| SMC0_SEL | SMC1_SEL | Active Interface |
| 0 | 0 | Inertia |
| 1 | 0 | SMC0 is movable |
| 0 | 1 | SMC1 is movable |
| 1 | 1 | SMC0 activity (acquiescence) |
PLD according to the SMC_SEL signal collected, the gating of control S/W3, S/W4, S/W5.
Such as SMC0_SEL=1, SMC1_SEL=1, namely SMC0 obtains control, BP_SMC0_SCL/SDA gating, the then EN3=0 of S/W3, EN4=1; The EN5=0 of S/W4, EN6=1; The EN7=0 of S/W5, EN8=1.In addition, the prerequisite that the EN of S/W2, S/W4, S/W5 opens is virtual test enabler flags VIRTUAL_EN=1, otherwise EN2/EN5/EN6/EN7/EN8 forbids.
SW_ID is slot signal, and management board end is according to after certain slot board plug state of line card Present signal acquisition in place, and export SW_ID to line card end, line card end carries out according to SW_ID value the configuration giving tacit consent to IP.Present signal is actual at line card end is (in as Fig. 4 PRE#) one end ground connection be connected to each other, and one end is by pull-up resistor pull-up.In the present invention, fictionalize a signal to ground respectively by backboard, and be connected to BP_PLD to realize by pull-up, the TEST_PRE# of corresponding diagram 4 and Fig. 5 b.What describe in this is effect and the production process of PRE signal in place and SW_ID signal, and these two signals all do virtual by the present invention, the function of simulation management board.Configuration of IP is to make management board obtain the procotol needed the outband management passage of line card, and line card end has an acquiescence IP, and this acquiescence IP is arranged according to slot ID.Management board can initiate the IP information that demand upgrades line card, if do not initiate to upgrade demand, line card is then by acquiescence IP configuration, and management board carries out out-of-band access by acquiescence IP.SW_ID signal is originally that management board exports, and does virtual in the present invention, by the virtual generation of line card.Configuration of IP is the function at a virtual management board of line card.Therefore, the IP configuration feature of the PRE# of management board and output signal SW_ID, management board can realize on line card of the present invention, leaves management board end completely.The SW_ID truth table of four slots is as shown in table 2 below:
Table 2SW_ID truth table
| id | SW_ID1 | SW_ID0 |
| 0 | 0 | 0 |
| 1 | 0 | 1 |
| 2 | 1 | 0 |
| 3 | 1 | 1 |
Such as SW_ID [1:0]=01, represent ID=1, namely line card is positioned at 1 groove, then line card end allocating default IP:192.168.0. (200+id) i.e. 192.168.0.201, Netmask1:255.255.255.0.
INT# signal is the look-at-me that line card exports to management board, Low level effective.
The control of EN3, EN4 of S/W3 is determined that by the SMC_SEL value of S/W1 any instant only has at most a passage gating, ensures to only have an I2C master controller;
The EN2 acquiescence of S/W2 is closed, only just effective when VIRTUAL_EN=1.S/W2 can be used as SMC_SEL, SW_ID of exporting from management board or input, the gating switch of the simulating signal of INT#, PRE# etc.;
EN5, EN6, EN7, EN8 acquiescence of S/W4, S/W5 is closed, and when VIRTUAL_EN=1, carries out the gating of related channel program according to the value of SMC_SEL, can be used as and export or the gating switch of the signal such as IIC, RST, SGMII of input from management board.
In software strategy, line card adds the virtual test of management board signal, can increase project in original production test item:
1) control TEST_SEL signal value, simulation management board (systemmanagecontroller, SMC) principal and subordinate arbitration cases.Management board generally has two pieces in systems in which, makes redundancy backup, one main one from.When two pieces of management boards are simultaneously in place, need, by arbitration, to determine master slave relation, the arbitration result of management board can notice line card by SEL signal.Testing successful judgment condition is the device hung under the I2C bus simulated can have access to backboard I2C bus.As test item is:
SMC situation in place:
SMC0 is in place
SMC1 is in place
SMC0/SMC1 is in place
Result:
It should be noted that, SMC0 and SMC1 represents system two management boards, and test result is exactly that three above enumerates one of situation, as result: SMC0 is in place, represents that management board 0 is in place.Line card, can the corresponding switch ways of gating according to the arbitration result signal SEL of simulation, can simulate arbitrarily a system management unit wherein in place and situation in place simultaneously simultaneously.The present invention is simulated management board function at line card end by such scheme, simulates equally the arbitration result of management board, the situation in place of management board.Following test item result is all corresponding to one of corresponding test item.
2) control TEST_SW_ID signal value, the slot situation in place that simulation management board exports.Testing successful judgment condition is that acquiescence IP can be arranged accordingly according to slot difference.As test item is:
SLOT slot situation in place:
SLOT_0 is in place
SLOT_1 is in place
SLOT_2 is in place
SLOT_3 is in place
Result:
3) control TEST_RST signal, simulation management board is to the reset of line card.Testing successful judgment condition is that line card can successfully reset.As test item is:
SMC0 reset SW
SMC1 reset SW
Result:
4) control TEST_SGMII signal, the out-band channel management of simulation management board.Testing successful judgment condition is that interface receiving frame is normal.As test item is:
SMGII0 tests
SGMII1 tests
Result:
5) TEST_INT# signal is monitored, the interrupt interface application of simulation management board.Testing successful judgment condition is forced-triggered interrupt event, checks whether interrupt flag position changes.As test item is:
INT# interrupts
Result:
Be more than software view virtual test to management board interactive signal on line card, be applicable to the production test coordinating backboard to use, the hardware path of signal and the correctness of logic can be checked.In addition, for backboard connect across card high speed signal, backboard can carry out from ring, can design simultaneously and send consistent with the cabling of actual backboard to track lengths with reception line, guarantee signal integrity.
Verify correlation function or positioning problems under needing to carry out client's master routine, can manually VIRTUAL_EN be opened, coordinate backboard to carry out.
Another aspect of the present invention, provide a kind of line card method of testing, as shown in Figure 6, the method that embodiment of the present invention provides comprises: S101, and line card produces test trigger signal and by back panel connector, produced test trigger signal is sent to described backboard; And S102, the element under test in described line card receives the test signal obtained according to described test trigger signal from described backboard by described back panel connector.
In embodiments, test signal can be identical with test trigger signal.In other words, test trigger signal is just used to the test signal of testing line card.Element under test in embodiments in line card receives described test signal by the test interface of described back panel connector.In another embodiment, line card can comprise the switching device be arranged between described element under test and described test interface; And the method is included in path when described line card is in described test pattern described in conducting between test interface and described element under test.
By technique scheme, line card can produce test trigger signal thus complete the test to line card self by backboard, does not need to rely on management board and back board system and the test and the functional verification that realize line card self and the signal mutual with management board.
Fig. 7 is line card method of testing process flow diagram according to the preferred embodiment of the present invention.Be described as follows with reference to figure 7 pairs of flow processs, what the numeral 0,1 wherein in Fig. 7 represented is logical zero, 1, and as 0 represents low level, 1 represents high level:
S71, BP_PLD control motherboard power supply and power on, and start.The input power of line card can be that chassis power supply is provided by backboard.In various embodiments, can supply socket be arranged on backboard, reserve supply socket at line card mainboard end simultaneously, for debugging.Upper and lower electricity can be controlled by BP_PLD, realizes the upper and lower electricity of software control.BP_PLD and S/W can by standby Power supply.
S72, BP_PLD check the mark that powered on.Mainboard completes according to electrifying timing sequence and powers on, and after last road voltage completes and powers on, feedback exports BP_PLD to, and set POWEROK identify, shows to power on normal, otherwise restarts, until recover normally;
S73, module initialization.SW_ID is after management board detects that line card is in place, and according to the signal of the representative slot that different slot exports, line card is according to the acquiescence IP of signal combination configuration outband management interface.After module initialization, acquisition SW_ID value (SW_ID [1:0]=?), according to the acquiescence IP of SMC_SEL value configuration outband management interface, such as, when SMC_SEL value is 00, acquiescence IP is configured to 192.168.0.200; When SMC_SEL value is 01, acquiescence IP is configured to 192.168.0.201; When SMC_SEL value is 10, acquiescence IP is configured to 192.168.0.202; When SMC_SEL value is 11, acquiescence IP is configured to 192.168.0.203;
The VIRTUAL_EN mark of S74, acquisition BP_PLD.VIRTURL_EN is the enable mark of virtual signal of BP_PLD, and be defaulted as enable closedown VIRTURL_EN=0, i.e. the master routine of corresponding client, S/W does not now come into force, and virtual signal is well isolated.For the production test program version of citing, need software that this home position 1 is made VIRTURL_EN=1, such S/W respective channel just can be opened, and namely during VIRTURL_EN=0, when performing S76, VIRTURL_EN=1, performs S75;
S75, loading production test pattern, after loading production test pattern, acquisition SMC_SEL value (SMC_SEL [1:0]=?), select master control and passage according to SMC_SEL value, then enter production test program.Such as, when SMC_SEL value is 00, without master control, EN3/EN4=0, closes, EN2=0, opens, EN5/6/7/8=1, closes; For another example, when SMC_SEL value is 01 or 11, SMC0 master control, EN3=0, opens, EN2=0, opens, EN5=0, opens, EN7=0, opens; For another example, when SMC_SEL value is 10, SMC1 master control, EN4=0, opens, EN2=0, opens, EN6=0, opens, EN8=0, opens.Under production test state, coordinate backboard, except testing the hardware design path of line card itself, the management board functional test item of increase also will perform, thus realize full test;
S76, loading master routine pattern, after loading master routine pattern, acquisition SMC_SEL value (SMC_SEL [1:0]=?), select master control and passage according to SMC_SEL value, then enter master routine.Such as, when SMC_SEL value is 00, without master control, EN3/EN4=0, closes; For another example, when SMC_SEL value is 01 or 11, SMC0 master control, EN3=0, opens; For another example, when SMC_SEL value is 10, SMC1 master control, EN4=0, opens.Under master routine, if need to carry out user rs environment simulation or functional verification, also backboard can be coordinated.Manually VIRTURL_EN is opened, greatly convenient when without management board and back board system environment, to the commissioning of interactive signal.
The apparatus and method that embodiment of the present invention provides have the following advantages:
1, do not need dependence management board and back board system just can realize test and the functional verification of line card itself and the signal mutual with management board, improve development efficiency, greatly save hardware development cost;
2, implementation is simple, newly-increased virtual signal can be accomplished completely isolated, traditional line card system and software are not affected, can under the prerequisite that case system is not provided, the test of settling signal and the location of problem, as much as possible close to real system application scenarios, greatly improve product quality;
3, portable strong, can be realized by the method embodying the principle of the invention with the signal that management board is mutual, be applicable to all types of line card.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.Such as, the method that embodiment of the present invention provides is not limited to the line card type being used in the line card of conventional machine posture product, the service card of blade switch or other system; A kind of the line card method for designing and the backboard that realize management board functional verification is described for stamping-out signal SMC_SEL, IIC signal SMC_IIC, slot signal SW_ID, reset signal SMC_RST, look-at-me INT#, outband management interface signal SGMII in embodiments of the present invention, be applicable to the mutual signal of other and management board or interface type too, as the design of PRESENT, 1000BASE-SX etc.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. a line card, this line card comprises processor and back panel connector, and this back panel connector comprises the multiple interfaces be connected with backboard, it is characterized in that,
Described line card has test pattern, and described processor is configured to when described line card is in described test pattern, produces test trigger signal and by described back panel connector, produced test trigger signal is sent to described backboard; And
Element under test in described line card receives the test signal obtained according to described test trigger signal from described backboard by described back panel connector.
2. line card according to claim 1, is characterized in that, the element under test in described line card receives described test signal by the test interface in described multiple interface.
3. line card according to claim 2, is characterized in that, this line card also comprises the switching device be arranged between described element under test and described test interface; And
Described switching device is configured to the path when described line card is in described test pattern described in conducting between test interface and described element under test.
4. line card according to claim 3, is characterized in that, described switching device can hot plug.
5. line card according to claim 3, is characterized in that, described switching device supports the switching characteristic on 1 road or 2 tunnels, determines gating by control pin.
6. a backboard for line card, this backboard is connected by back panel connector with line card, it is characterized in that, described backboard is configured to:
Test trigger signal is received from described line card; And
Obtain test signal according to described test trigger signal and described test signal is sent it back described line card.
7. backboard according to claim 6, is characterized in that, described test signal is identical with described test trigger signal.
8. a line card method of testing, described line card is connected with backboard by back panel connector, it is characterized in that, the method comprises:
Line card produces test trigger signal and by described back panel connector, produced test trigger signal is sent to described backboard; And
Element under test in described line card receives the test signal obtained according to described test trigger signal from described backboard by described back panel connector.
9. line card method of testing according to claim 8, is characterized in that, the element under test in described line card receives described test signal by the test interface of described back panel connector.
10. line card method of testing according to claim 9, is characterized in that, wherein said line card comprises the switching device be arranged between described element under test and described test interface; And
The method is included in path when described line card is in described test pattern described in conducting between test interface and described element under test.
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