A kind of backboard and implementation method
Technical field
The present invention relates to the back plate design field in the communication system, relate in particular to a kind of backboard and implementation method.
Background technology
At present, the complicated network equipment all adopts multi-groove card insert type structure, various main control cards, interface card, fan frame and primary power source module etc. all connect together by backboard, wherein, main control card is responsible for configuration, management and the monitoring of the whole network equipment, and all data all will be handled by main control card; Interface card provides different types of interface to be connected to external network, and the data of external network are transferred to main control card by backboard; Backboard is a passive circuit plate, provides signal connector and power connector to main control card and interface card, realizes that the signal between main control card and the interface card connects.
The network equipment generally adopts the dual master control pattern, and two main control cards are arranged in the whole network equipment.During the system operate as normal, a main control card is in the main state of use, the control and the management of responsible whole system; The another one main control card is in stand-by state, and real-time and main main control card with state keeps communicating by letter, and when finding that main main control card with state breaks down, the main control card of stand-by state can switch to the master and use main control card, and former master switches to standby main control card with main control card.Therefore, in the time of can guaranteeing that a main control card breaks down, switch to another one main control card management whole system immediately, make system can continue operate as normal.
Yet, dual master control card topological structure complexity, hardware and software realizes that difficulty is bigger, only is applicable to fail safe, reliability requirement than higher occasion.For safety, situation that reliability requirement is lower, the network equipment only need insert a main control card, is operated under the single control mode, and this system topology is simple, and hardware and software is realized also than being easier to.
At present, have some network equipment vendor that equipment is carried out special design, make to support the network equipment of master control system, be operated in single control mode following time, interface card work can be inserted in idle master control draw-in groove position.The network equipment is operated under the dual master control pattern as shown in Figure 1a, the configuration of each main control card and interface card; The network equipment is operated under the single control mode shown in Fig. 1 b, the configuration of each main control card and interface card.The network equipment makes equipment work under single control mode by this particular design, can insert an interface card more, has improved the ability that equipment provides interface.Realize in the network equipment of above-mentioned functions, the topological structure of backboard, back panel connector layout and PCB (Print Circuit Board, printed circuit board (PCB)) all more complicated that connects up, different vendor's implementation also has nothing in common with each other.
A kind of dual master control backboard that relatively extensively exists is the dual star topology structure now, as shown in Figure 2.Double star-type system has two main control cards and polylith interface card, between every main control card and every interface card a lane interconnect is arranged all, be used for interaction data, interconnecting channel generally adopts high speed SerDes (Serial and Deserial, string signal is conciliate in serial), be generally high-speed differential signal, one receives one connects two chips, and many high speed SerDes signal interconnections are arranged between each main control card and interface card.
In order to realize that one of them master control draw-in groove position can insert interface card when not inserting main control card, this master control draw-in groove position also needs to place the interface card connector on backboard.Fig. 3 is an example with 5 groove position dual star topology backboards, back panel connector adopts away 2 * 10 couples of ZD (high-speed differential signal) connector of high speed signal, the solid line double arrowed line is represented the interconnecting channel of main control card 1 and interface card 1,2,3, and the dashed double line is represented the interconnecting channel of main control card 2 and interface card 1,2,3.Each interconnecting channel is 10 pairs of SerDes signal interconnections, and each interconnecting channel signal just in time takies a ZD connector.The ZD connector on the right, main control card 2 groove positions is the interface card connector among Fig. 3, and when interface card was inserted in this groove position, interface card can be by the main control card connector interconnection of this connector and main control card 1 groove position.
Fig. 4 a is depicted as the main control card 1 groove position schematic diagram on the main control card insertion backboard, four main control card connectors are arranged on the main control card, on the main control card 1 groove position of backboard four main control card connectors are arranged, corresponding with the connector position on the main control card, when main control card inserted backboard, the main control card connector on main control card and the backboard engaged fully.Schematic diagram when Fig. 4 b is depicted as main control card and inserts main control card 2 groove positions on the backboard, four main control card connectors are arranged on the main control card, on the main control card 2 groove positions of backboard 3 main control card connectors are arranged, 1 interface card connector, for fear of mispluging, interface card connector and main control card connector at interval should be greater than two connectors.Fig. 5 a is depicted as interface card and inserts main control card 2/ interface card 0 groove position on the backboard, and the outside interface card connector on the interface card engages fully with interface card connector on the main control card 2/ interface card 0 groove position; Situation when Fig. 5 b is depicted as interface card and inserts interface card 1,2,3 groove positions on the backboard, two interface card connectors on the interface card respectively with interface card 1,2,3 groove positions on the interface card connector engage fully.
Main control card promptly can be inserted in main control card 2 groove positions can insert interface card again, the placement of connector need be satisfied on backboard under this technical scheme so: main control card is corresponding connector on backboard in corresponding connector on the backboard and interface card, and relative position can not overlap.
If main control card is corresponding connector on backboard in corresponding connector on the backboard and interface card, relative position has the place of coincidence, as dashed rectangle place among Fig. 6, when mispluging main control card 1 groove position, interface card (sees Fig. 7 a) so, when perhaps main control card misplugs interface card 1,2,3 groove positions (seeing Fig. 7 b), because back panel connector and card connector be alignment not, can cause the damage of connector, can not satisfy the requirement of each slot anti-mis-insertion of the network equipment.
Because main control card is corresponding connector on backboard in corresponding connector on the backboard and interface card, relative position can not overlap, so the layout of connector is subjected to bigger influence on the backboard.Backboard as shown in Figure 3 under the certain situation of groove position horizontal width, for example can only be placed 6 connectors on a groove position, then can only support 5 groove positions at most.As shown in Figure 8, if backboard is supported 6 groove positions, can occur so main control card in corresponding connector on the backboard and interface card corresponding connector on backboard, the dashed rectangle place relative position in Fig. 8 has coincidence, can not satisfy the requirement of each slot anti-mis-insertion of the network equipment.
Summary of the invention
The embodiment of the invention provides a kind of backboard topology and implementation method, supports a master control draw-in groove position promptly can insert main control card, again can the interface card, and under the identical situation of backboard horizontal width, increased the number of slots amount that backboard is supported.
For achieving the above object, the embodiment of the invention provides a kind of backboard, comprise: main with master control draw-in groove position, standby master control draw-in groove position and a plurality of interface draw-in grooves position, described each groove position is provided with connector, described interface draw-in groove position is respectively arranged with described main with master control draw-in groove position connector that is connected and the connector that is connected with described standby master control draw-in groove position
Determine on the described interface draw-in groove position respectively and described main row portion position and type with master control draw-in groove position connector that is connected and the connector that is connected with described standby master control draw-in groove position;
Described main with the position identical on master control draw-in groove position and the described standby master control draw-in groove position with the connector row portion position of described interface draw-in groove position be provided with described position corresponding with described interface card slot position connector connector of the same type.
Wherein, arbitrary connector of described interface draw-in groove position, and described main with on master control draw-in groove position and the described standby master control draw-in groove position with described arbitrary connector corresponding connector, geometric center is located along the same line.
Wherein, on described interface draw-in groove position, a plurality of connectors are arranged, then main be respectively arranged with connector with the position identical on master control draw-in groove position and the described standby master control draw-in groove position with each connector of described interface draw-in groove position described, and on described main usefulness master control draw-in groove position and the described standby master control draw-in groove position on spacing and the described interface draw-in groove position of each connector the spacing between corresponding connector identical.
Wherein, the type difference of a plurality of connectors on described interface draw-in groove position, then described main with master control draw-in groove position and described standby master control draw-in groove position on described interface draw-in groove position on each connector corresponding connector, its type is the type of connector on the described interface draw-in groove position corresponding with described connector.
Wherein, described interface draw-in groove has two connectors on the position, and the type of described two connectors is identical or different.
Wherein, identical with a connector row portion position on the described interface draw-in groove position mainly be connected with standby main control card slot position connector, be not connected with connector on the interface draw-in groove position with the main control card slot position connector; Described main be connected with connector on the interface draw-in groove position with other connector on master control draw-in groove position and the standby master control draw-in groove position.
Wherein, described main received signal pin with the transmission signal pin of each connector on the master control draw-in groove position and the standby main control card connector that links to each other with described connector or corresponding interface card slot position connector is connected;
Be not connected the received signal pin connection of connector on the transmission signal pin of other connector on the described standby master control draw-in groove position and the corresponding interface draw-in groove position on the described standby master control draw-in groove position with interface draw-in groove position with the main connector that is connected with master control draw-in groove position.
Wherein, described master is the leftmost side, groove position or rightmost side connector with the connector that is not connected with interface draw-in groove position on the master control draw-in groove position.
Wherein, described master control draw-in groove position is positioned at backboard top, centre or bottom.
Wherein, described backboard is a rectangle.
The present invention also provides a kind of backboard, comprising: main with master control draw-in groove position, standby master control draw-in groove position and a plurality of interface draw-in grooves position; Described each groove position is provided with connector, and described interface draw-in groove position is respectively arranged with described main with master control draw-in groove position connector that is connected and the connector that is connected with described standby master control draw-in groove position,
The connector that is connected with described standby master control draw-in groove position on the described interface draw-in groove position is with described main identical with the connector type that is connected with standby master control draw-in groove position on the master control draw-in groove position; And the connector on the described interface draw-in groove position is located along the same line with the connector geometric center that is connected with described standby master control draw-in groove position on the master control draw-in groove position with described master.
Wherein, described main with on the master control draw-in groove position with connector that described standby master control draw-in groove position is connected on transmission signal pin and described standby master control draw-in groove position on received signal pin in the corresponding connector be connected; And described main with on the master control draw-in groove position with connector that described standby master control draw-in groove position is connected on received signal pin and described standby master control draw-in groove position on transmission signal pin in the corresponding connector be connected.
The present invention also provides a kind of backboard implementation method, comprising:
Determine on the interface draw-in groove position and the main connector that is connected with master control draw-in groove position, reach the row portion position and the type of the connector that is connected with standby master control draw-in groove position;
Described main with master control draw-in groove position and described standby master control draw-in groove position on, identical position, the connector row portion position that connects with described interface draw-in groove position be provided with corresponding interface draw-in groove position, described position on connector connector of the same type.
Wherein, described main received signal pin with the transmission signal pin of each connector on the master control draw-in groove position and the standby main control card connector that links to each other with this connector or corresponding interface card connector is connected;
With the described main connector that is connected with master control draw-in groove position, be not connected with interface card on the described standby master control draw-in groove position, the transmission signal pin of other connector on the described standby master control draw-in groove position connects with the received signal pin of corresponding interface card connector.
The present invention also provides a kind of backboard implementation method, comprising:
Determine on the interface draw-in groove position, with the main connector that is connected with master control draw-in groove position, and the row portion position and the type of the connector that is connected with standby master control draw-in groove position;
Described main using on master control draw-in groove position and the described standby master control draw-in groove position, be provided with and described interface card slot position connector connector of the same type, the connector on the described interface draw-in groove position is located along the same line with described main geometric center with the connector that is connected with described standby master control draw-in groove position on the master control draw-in groove position.
Wherein, described main received signal pin with the transmission signal pin of each connector on the master control draw-in groove position and the standby main control card connector that links to each other with this connector or corresponding interface card connector is connected;
Be not connected with interface card with the main connector that is connected with master control draw-in groove position on the standby master control draw-in groove position, the transmission signal pin of other connector on the described standby master control draw-in groove position connects with the received signal pin of corresponding interface card connector.
Compared with prior art, the embodiment of the invention has the following advantages:
In the embodiments of the invention, the connector of master control draw-in groove position and interface draw-in groove position overlaps placement fully according to relative position, and connector type is selected identical, can save the back panel connector arrangement space, increase whole back plate number of slots amount, can satisfy the requirement of anti-mis-insertion simultaneously.
Description of drawings
Fig. 1 a is dual master control pattern lower network apparatus arrangement structure figure in the prior art;
Fig. 1 b is single control mode lower network apparatus arrangement structure figure in the prior art;
Fig. 2 is that a kind of dual master control backboard is the dual star topology structure chart in the prior art;
Fig. 3 is 5 groove position dual star topology backboard topological diagrams in the prior art;
Fig. 4 a is the main control card 1 groove position schematic diagram on the main control card insertion backboard in the prior art;
Fig. 4 b is the main control card 2 groove position schematic diagrames on the main control card insertion backboard in the prior art;
Fig. 5 a is the interface card 0 groove position schematic diagram on the interface card insertion backboard in the prior art;
Fig. 5 b is interface card 1,2, the 3 groove position schematic diagrames on the interface card insertion backboard in the prior art;
Fig. 6 is that main control card overlaps schematic diagram at corresponding connector on the backboard and interface card corresponding connector relative position on backboard in the prior art;
Fig. 7 a is that interface card misplugs main control card 1 groove position schematic diagram in the prior art;
Fig. 7 b is that main control card misplugs interface card 1,2,3 groove position schematic diagrames in the prior art;
Fig. 8 is that the prior art dorsulum is supported 6 groove position schematic diagrames;
Fig. 9 a is with 5 groove position backboard schematic diagrames in the embodiment of the invention;
Fig. 9 b is with 5 groove position another schematic diagrames of backboard in the embodiment of the invention;
Figure 10 a is main control card 2 groove positions or interface card 0 a groove position insertion main control card schematic diagram in the embodiment of the invention;
Figure 10 b is main control card 2 groove positions or interface card 0 a groove position insertion interface card schematic diagram in the embodiment of the invention;
Figure 11 is main with main control card and standby main control card connection diagram in the embodiment of the invention;
Figure 12 a is a prior art dorsulum signal interconnection definition schematic diagram;
Figure 12 b is a main control card signal interconnection definition schematic diagram in the prior art;
Figure 12 c is an interface card signal interconnection definition schematic diagram in the prior art;
Figure 13 a is that interface card signal interconnection schematic diagram is inserted in main control card 2 groove positions in the prior art;
Figure 13 b is that main control card signal interconnection schematic diagram is inserted in main control card 2 groove positions in the prior art;
Figure 14 a is an embodiment of the invention dorsulum signal interconnection definition schematic diagram;
Figure 14 b is a main control card signal interconnection definition schematic diagram in the embodiment of the invention;
Figure 14 c is an interface card signal interconnection definition schematic diagram in the embodiment of the invention;
Figure 15 is the embodiment of the invention 7 groove position backboard schematic diagrames.
Embodiment
The embodiment of the invention provides a kind of backboard, comprise: main with master control draw-in groove position, standby master control draw-in groove position and a plurality of interface draw-in grooves position, each groove position is provided with connector, and interface draw-in groove position is respectively arranged with main with master control draw-in groove position connector that is connected and the connector that is connected with standby master control draw-in groove position.In design during this backboard, at first determine on the interface draw-in groove position respectively and main row portion position and type with master control draw-in groove position connector that is connected and the connector that is connected with standby master control draw-in groove position; With the position identical on master control draw-in groove position and the standby master control draw-in groove position with the interface card slot position connector of the same type connector corresponding with the position is set main then with the connector row portion position of interface draw-in groove position.Wherein, arbitrary connector of interface draw-in groove position, and main with on master control draw-in groove position and the standby master control draw-in groove position with arbitrary connector corresponding connector, geometric center is located along the same line.
Interface draw-in groove position may comprise a plurality of connectors, and two connectors are generally arranged on the interface draw-in groove position, and the type of two connectors is identical or different.On interface draw-in groove position, a plurality of connectors are arranged, then be respectively arranged with connector with the position identical on master control draw-in groove position and the standby master control draw-in groove position with each connector of interface draw-in groove position main, and on main usefulness master control draw-in groove position and the standby master control draw-in groove position on spacing and the interface draw-in groove position of each connector the spacing between corresponding connector identical.The type difference of a plurality of connectors on interface draw-in groove position, then main with master control draw-in groove position and standby master control draw-in groove position on interface draw-in groove position on each connector corresponding connector, its type is the type of connector on the interface draw-in groove position corresponding with connector.Identical with a connector row portion position on the interface draw-in groove position mainly be connected with standby main control card slot position connector, be not connected with connector on the interface draw-in groove position with the main control card slot position connector; Main be connected with connector on the interface draw-in groove position with other connector on master control draw-in groove position and the standby master control draw-in groove position.
In addition, main received signal pin with the transmission signal pin of each connector on the master control draw-in groove position and the standby main control card connector that links to each other with connector or corresponding interface card slot position connector is connected; Be not connected the received signal pin connection of connector on the transmission signal pin of other connector on the standby master control draw-in groove position and the corresponding interface draw-in groove position on the standby master control draw-in groove position with interface draw-in groove position with the main connector that is connected with master control draw-in groove position.Main is the leftmost side, groove position or rightmost side connector with the connector that is not connected with interface draw-in groove position on the master control draw-in groove position; Master control draw-in groove position is positioned at backboard top, centre or bottom; Backboard is generally and is rectangle.
With reference to figure 9a, be example with 5 groove position backboards, backboard topological structure of the present invention is elaborated.Back panel connector all adopts away 2 * 10 pairs of ZD connectors of high speed signal, the solid line double arrowed line is represented the interconnecting channel of main control card 1 and interface card 0,1,2,3, the dashed double line is represented the interconnecting channel of main control card 2 and interface card 1,2,3, wherein, though the connector physical connection on the interface card 0 and interface card 1 left side can be closed it by the program control of system.Compare with backboard shown in Figure 3, the interface card connector that is connected with standby main control card connector on the interface draw-in groove position in the present embodiment, with the rightmost side main control card connector of standby master control draw-in groove position in the direction central lines vertical with the groove position.
The embodiment of the invention also provides another kind of backboard, with reference to figure 9b, comprising: main with master control draw-in groove position, standby master control draw-in groove position and a plurality of interface draw-in grooves position; Each groove position is provided with connector, and interface draw-in groove position is respectively arranged with main with master control draw-in groove position connector that is connected and the connector that is connected with standby master control draw-in groove position.The connector that is connected with standby master control draw-in groove position on the interface draw-in groove position is with main identical with the connector type that is connected with standby master control draw-in groove position on the master control draw-in groove position; And the connector on the interface draw-in groove position is located along the same line with the connector geometric center that is connected with standby master control draw-in groove position on the master control draw-in groove position with main.In addition, main with on the master control draw-in groove position with connector that described standby master control draw-in groove position is connected on transmission signal pin and standby master control draw-in groove position on received signal pin in the corresponding connector be connected; And main with on the master control draw-in groove position with connector that standby master control draw-in groove position is connected on received signal pin and described standby master control draw-in groove position on transmission signal pin in the corresponding connector be connected.
Fig. 9 b condition is identical with Fig. 9 a, and just the interface card connector that is connected with standby main control card connector on the interface draw-in groove position in the present embodiment uses the right side main control card connector of master control draw-in groove position in the direction central lines vertical with the groove position with the master.Though compare with Fig. 9 a among this embodiment, can not increase the groove position to greatest extent, compared with prior art, still improved backplane utilization.
Figure 10 a is depicted as main control card 2 groove positions (or interface card 0 groove position) and inserts the main control card schematic diagram, because back panel connector relative position corresponding on the main control card connector on the main control card and the backboard overlaps fully, selected connector is also identical, therefore can not cause connector to damage; In like manner, Figure 10 b is depicted as main control card 2 groove positions (or interface card 0 groove position) and inserts the interface card schematic diagram, because back panel connector relative position corresponding on the interface card connector on the interface card and the backboard overlaps fully, selected connector is also identical, so can not cause the connector damage.
With reference to Figure 11, the embodiment of the invention is operated under the single control mode, and main control card is inserted in main control card 1 groove position, and interface card is inserted in main control card 2 groove positions, and the right connector interconnecting channel is the passage of main control card and interface card interconnection.Be operated under the dual master control pattern, main control card is all inserted in main control card 1 groove position and main control card 2 groove positions, and this moment, the right connector interconnecting channel connected two main control cards, and this passage does not need to use, but reality connects on backboard.Therefore the passage that needs to guarantee two main control card actual interconnect can not conflict on electrical characteristic, therefore that is to say and to connect together the transmission signal of two main control cards by backboard need certain requirement be arranged to the signal definition of the connector of main control card and interface card.
The right connector of Figure 11 passes through the SerDes signal interconnection on backboard, ZD connector signal pin is divided into 4 row, in the prior art, the definition of backboard signal interconnection is connected to each other shown in Figure 12 a, the top minute hand of top connector is connected with following connector top minute hand, above the bottom minute hand of connector be connected with following connector bottom minute hand; The definition of these two connectors is shown in Figure 12 b on the corresponding backboard of main control card, and minute hand transmission in top sends signal, bottom minute hand transmission received signal; The definition of these two connectors is shown in Figure 12 c on the corresponding backboard of connector on the interface card, and the top minute hand transmits received signal, and minute hand transmission in bottom sends signal.
Therefore in the prior art, with reference to figure 13a, when main control card 1 groove position insertion main control card, when interface card was inserted in main control card 2 groove positions, signal was connected to and sends signal and received signal interconnection; Shown in Figure 13 b, when main control card 1 groove position insertion main control card, when main control card is also inserted in main control card 2 groove positions, signal is connected to and sends signal and send signal interconnection, received signal and received signal interconnection can cause signal conflict like this, so the definition of this connector signal can not be used.
The present invention need guarantee the rightmost interface card connector of main control card 1 groove position rightmost connector and interface card 0 groove position; And in the connector on the rightmost main control card connector and the left side, interface card 1 groove position, the signal sending and receiving characteristic of signal definition correspondence is identical, shown in Figure 14 a, b, c on the main control card 2 groove positions.Backboard signal interconnection definition is connected to each other shown in Figure 14 a, above the top minute hand of connector be connected with following connector bottom minute hand, above the bottom minute hand of connector be connected with following connector top minute hand; The definition of these two connectors is shown in Figure 14 b on the corresponding backboard of main control card, and minute hand transmission in top sends signal, bottom minute hand transmission received signal (vice versa); The definition of these two connectors is shown in Figure 14 c on the corresponding backboard of connector on the interface card, and minute hand transmission in top sends signal, bottom minute hand transmission received signal (vice versa).According to the signal configures of Figure 14, no matter be that main control card is inserted in main control card 2 groove positions (interface card 0 groove position), still insert interface card, signal conflict can not take place, all be to send signal and received signal interconnection.When inserting two main control cards, the interconnecting channel among Figure 14 does not need to use, and this moment, software was not handled just passable.
The present invention compares with the prior art scheme, under the identical situation of backboard horizontal width, can support more groove position.Design backboard according to the present invention program as shown in figure 15 and can support 7 groove positions, and original technical scheme shown in Figure 3 can only be supported 5 groove positions at most.
The embodiment of the invention also provides a kind of backboard implementation method, comprising:
At first, determine on the interface draw-in groove position and the main connector that is connected with master control draw-in groove position, reach the row portion position and the type of the connector that is connected with standby master control draw-in groove position;
Then, described main with master control draw-in groove position and described standby master control draw-in groove position on, identical position, the connector row portion position that connects with described interface draw-in groove position be provided with corresponding interface draw-in groove position, described position on connector connector of the same type.
Wherein, described main received signal pin with the transmission signal pin of each connector on the master control draw-in groove position and the standby main control card connector that links to each other with this connector or corresponding interface card connector is connected; With the described main connector that is connected with master control draw-in groove position, be not connected with interface card on the described standby master control draw-in groove position, the transmission signal pin of other connector on the described standby master control draw-in groove position connects with the received signal pin of corresponding interface card connector.
The present invention also provides a kind of backboard implementation method, comprising:
At first, determine on the interface draw-in groove position, with the main connector that is connected with master control draw-in groove position, and the row portion position and the type of the connector that is connected with standby master control draw-in groove position;
Then, described main using on master control draw-in groove position and the described standby master control draw-in groove position, be provided with and described interface card slot position connector connector of the same type, the connector on the described interface draw-in groove position is located along the same line with described main geometric center with the connector that is connected with described standby master control draw-in groove position on the master control draw-in groove position.
Wherein, described main received signal pin with the transmission signal pin of each connector on the master control draw-in groove position and the standby main control card connector that links to each other with this connector or corresponding interface card connector is connected; Be not connected with interface card with the main connector that is connected with master control draw-in groove position on the standby master control draw-in groove position, the transmission signal pin of other connector on the described standby master control draw-in groove position connects with the received signal pin of corresponding interface card connector.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.