CN1725661A - Switching method and device for service port in double master control system - Google Patents
Switching method and device for service port in double master control system Download PDFInfo
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Abstract
A method for switching service port in double-main-control system includes selecting out a numbers of desired service ports from all service ports of the first and the second main control board, connecting said service ports to relevant service channels of two said control boards through selection unit, activating service channel of main control board to be switched when switch is happened between the first and the second main control on board on double system. The device for realizing the method is also disclosed.
Description
Technical field
The present invention relates to electronic communication, particularly be related to and improve the reliability that data switch and the changing method and the device of service port in a kind of master control system that uses.
Background technology
The communication equipment that uses in communication network and enterprise network must possess the functional reliability of long-time running, and this also is very important performance index of examination telecommunication apparatus.Use certain single equipment, be difficult to satisfy the reliability requirement of regulation usually.From improving the angle of reliability, it is the important means that improves its functional reliability that the nucleus equipment of key is carried out redundancy backup.When carrying out redundancy backup usually, the kind of alternate device and quantity are many more, then the reliability of this system is high more, but the cost that is spent is also big more, so from the whole system angle, reach the optimality price ratio, the consideration of comprehensive each side, the common redundant back-up of only equipment of key being made 1+1.
Along with the continuous development of technology and customer demand, very high requirement has been proposed for the reliability of relevant device in communication network and the enterprise network (as Ethernet switch and router or the like).In order to satisfy client's demand, increase customer satisfaction degree, in the design of relevant device, adopted the design of dual master control.Two master control borads are operated in activestandby state, and promptly one is main control board Master, and one is slave control board Slave.When described Master is in running order, and Slave is ready, and the operational data of real-time backup Master.If Master occurs unusual, then slave control board Slave will oneself become main control board Master, and takes over relevant work at once, thereby can not cause professional interruption when switching.
In order to make the client save cost, in the design of master control borad, master control borad provides service port.A simple master control system in this system, has two master control borads 11 and 12 and business boards 13 as shown in Figure 1, and each master control borad provides four service ports.
Consider that from whole system active and standby control technology mainly contains two kinds of cold standby and Hot Spares.The characteristics of cold standby are that standby control board is not worked, and is in resting state when main control board is worked; When main control board broke down, slave control board was just started working.Its advantage is that technology is simple, and cost is lower; Shortcoming is: by main long to the transit time that is equipped with, and can influence original path by main to the switching that is equipped with.The characteristics of described Hot Spare are that main control board and slave control board keep synchronous operation, just slave control board is not exported: when main control board breaks down, as long as close its output, the output of opening slave control board simultaneously gets final product (this must scene implement).Its advantage is a transitions smooth, does not influence original path, the reliability height; Shortcoming is a technical sophistication, and it is high that cost is wanted relatively.
The realization technology of the active and standby switching of using can be divided at present: central control type, active and standby mutual monitoring and control type, the multiple mode of active and standby monitoring and mutual control type etc. separately.But the result of the test that adopts the technology of above-mentioned various active and standby switchings to design finds all to exist to some extent some integrity problems, when occurring unexpectedly disturbing or during some special circumstances, the control error will occur, and can not correct voluntarily.This shows, described active and standby switching at present is exactly: when main control board broke down, then the business with main control board switched on the slave control board, was about to slave control board and replaced former main control board, and in time take over the related work of former main control board, interrupt to avoid professional the appearance; But the switching of described active and standby control board is that system detects and finishes automatically when unusual, be not that the user can control, but the switching of service port must be implemented at the scene.But, in handoff procedure, might switch by active and standby control board, and its service port does not also switch, will cause business obstructed, thereby influence client's utilization rate and satisfaction thereof.
Summary of the invention
The technical problem that the present invention solves provides the changing method and the device of service port in a kind of master control system, when the present invention is switched to solve present active and standby control board, and the interruption of service port on physical connection, thus may cause professional long-term obstructed problem.
For solving the problems of the technologies described above, the invention provides the changing method of service port in a kind of master control system, described master control system comprises first and second master control borads, backuping each other of first and second master control borads wherein comprises step:
A. need to select some service ports of use all service ports from first and second master control borads arbitrarily;
B. from first and second master control borads, select some corresponding business passages to connect described service port respectively by selected cell;
C. when described master control system switches between first and second master control borads, the service channel of the master control borad that activation will switch to, and those service channels are electrically connected with service port by selected cell.
Described steps A further comprises: choose any two service ports on first and second master control borads respectively;
Described step B further comprises:
Two corresponding business passages on described first master control borad are linked to each other with two service ports on this plate by selected cell respectively, and two service channels link to each other with two service ports on second master control borad by selected cell respectively in addition;
Two service channels on second master control borad are linked to each other respectively with two service ports on this plate by selected cell, and two service channels link to each other respectively by two service ports on selected cell and first mainboard in addition;
Described step C further comprises: when first master control borad and second master control borad switch, activate respectively with first or second master control borad on four corresponding business passages, and the service channel on another piece master control borad is unavailable this moment.
Described selected cell comprises a plurality of selector switches, and described each selector switch comprises three input/output interfaces at least, and synchronization is used to select one of them service port to be electrically connected with corresponding business passage on first or second master control borad.
The specific implementation process of described step B is:
B1, first and second service channels on first master control borad are connected with first and second service ports on this plate respectively by first and second selector switches;
B2, with third and fourth service channel on first master control borad by third and fourth selector switch respectively with second master control borad on the 5th link to each other with the 6th selector switch, and the described the 5th links to each other respectively with first and second service ports on described second master control borad with the 6th selector switch.
B3, first and second service channels on second master control borad are connected with first and second service ports on this plate respectively with the 6th selector switch by the 5th;
B4, third and fourth service channel on second master control borad is linked to each other with first and second selector switches on first master control borad respectively with the 8th selector switch by the 7th, and described first and second selector switches are connected with first and second service ports on first master control borad respectively.
On described first master control borad first, second, third and the 4th selector switch link to each other with the 8th selector switch with the 5th, the 6th, the 7th of second master control borad respectively in twos by back panel connector.
Described steps A specifically comprises: choose any one service port of first master control borad and any three service ports on second master control borad;
Described step B specifically comprises:
A corresponding business passage on described first master control borad is linked to each other with a service port on this plate by selected cell on this plate respectively, and three service channels link to each other with three service ports on second master control borad by remaining selected cell respectively in addition;
Three service channels on second master control borad are linked to each other respectively with three service ports on this plate by the part selected cell on this plate, and the residue selected cell that another service channel passes through on this plate links to each other with service port on first mainboard;
Described step C specifically comprises: when first master control borad and second master control borad switch, activate respectively with first or second master control borad on four corresponding business passages, and the service channel on another piece master control borad is unavailable this moment.
The specific implementation process of described step B is:
B1, first service channel on first master control borad is connected with first service port on this plate by first selector switch;
B2, with on first master control borad second, third with the 4th service channel by second, third with the 4th selector switch respectively with second master control borad on the 5th, the 6th link to each other with the 7th selector switch, and the described the 5th, the 6th with the 7th selector switch and described second master control borad on first, second link to each other respectively with the 3rd service port.
B3, with on second master control borad first, second with the 3rd service channel by the 5th, the 6th with the 7th selector switch respectively with this plate on first, second be connected with the 3rd service port;
B4, the 4th service channel on second master control borad is linked to each other with second selector switch on first master control borad respectively by the 8th selector switch, and described second selector switch is connected with second service port on first master control borad respectively.
In addition, the present invention also provides the switching device shifter of service port in a kind of master control system, comprise: first master control borad and second master control borad, and service port on the described master control borad and service channel corresponding with it have a part at least as current use service port in described service port; Described device also comprises:
Selected cell, respectively with first and second main control units on service channel link to each other with service port, be used to realize the continuity of the first and second master control borad switchings according to business;
Switch control unit links to each other with selected cell, is used to control the strobe state of service channel and selected cell.
Described selected cell comprises a plurality of selector switches, and described each selector switch comprises three input/output interfaces at least, and synchronization is used to select one of them service port to be electrically connected with corresponding business passage on first or second master control borad.
Described device also comprises: back panel connector, respectively with first master control borad on first, second, third link to each other with the 8th selector switch with the 5th, the 6th, the 7th of the 4th selector switch and described second master control borad, be used to realize the mutual of business datum between the described master control borad.
Described selected cell also comprises two service port switches, four service port switch or programmable logic devices.
Compared with prior art, the present invention has following beneficial effect: the present invention couples together by part (such as the preceding two) service port of selector switch with the primary and backup master control borad in the master control system, and an input/output interface of described selector switch is electrically connected with service channel, when system detects when unusual, promptly realize the switching of primary and backup master control borad, according to technical solutions according to the invention, no matter how dual master control equipment switches, service port physically switching can not take place, therefore can not cause the interruption of business datum.Thereby reduce the loss that brings when primary and backup master control borad switches, the problem of service interruption in the time of can also avoiding out active and standby control board to switch has improved competitiveness and the customer satisfaction of product on market.
Description of drawings
Fig. 1 is the structure chart of the master control system of prior art;
Fig. 2 is the flow chart of the changing method of service port in the master control system of the present invention;
Fig. 3 is the structural representation of selector switch of the present invention;
Fig. 4 is the switching device shifter schematic diagram of service port in the master control system of the present invention;
Fig. 5 is the switching device shifter schematic diagram of service port most preferred embodiment in the master control system of the present invention.
Embodiment
Core of the present invention is under master control system, and the business on the master control borad can be handled by the selected arbitrarily some service ports that need to use in all service ports of first master control borad and second master control borad (following will being described with main control board Master and slave control board Slave respectively).That is to say, the Working service port of system can be selected arbitrarily, key be will be respectively (can be a plurality of multi-functional selector switches with the service channel of main control board in the master control system and standby main board by selected cell, also can be an integrated switch element) and top selected service port couple together, occur when unusual in system, no matter how main control board and slave control board switch, the service channel of slave control board can be easily by the gating of selected cell, be electrically connected with service port fast, thereby do not need execute-in-place, service port can not make us unacceptable service disconnection yet.
The present invention is further illustrated below in conjunction with accompanying drawing.
For convenience of description, preceding two service ports with master control system are that example illustrates respectively, other situations, and those skilled in the art can and preferred embodiment finish easily according to spirit of the present invention, below repeat no more.
See also Fig. 2, be the flow chart of the changing method of service port in the master control system of the present invention; Described method comprises:
Step S10: some service ports of need selecting use all service ports from first and second master control borads arbitrarily;
Step S11: connect described service port by selected cell from the some corresponding business passages of first and second master control borads;
Step S12: when described master control system switches between first and second master control borads, the service channel of the master control borad that activation will switch to.
Wherein, described step S10 further comprises: choose any two service ports on first and second master control borads respectively;
Described step S11 further comprises: two corresponding business passages on described first master control borad are linked to each other with two service ports on this plate by the part selected cell on this plate respectively, and two service channels link to each other with two service ports on second master control borad by remaining selected cell on this plate respectively in addition;
Two service channels on second master control borad are linked to each other respectively with two service ports on this plate by the part selected cell on this plate, and two service channels pass through that two service ports link to each other respectively on residue selected cell and first mainboard on this plate in addition;
Described step S12 further comprises: when first master control borad and second master control borad switch, activate respectively with first or second master control borad on four corresponding business passages, and by selector switch service channels that these have just activated are communicated with service port, and selected cell has cut off being connected of service channel on another piece master control borad of service port and other at this moment.When in fact generally switching, all be usually because the service channel unavailable (for example system failure) of another piece master control borad.
The specific implementation process of described step S11 comprises (preceding two service ports with first master control borad and second master control borad are that example describes):
B1, first and second service channels on first master control borad are connected with first and second service ports on this plate respectively by first and second selector switches;
B2, with third and fourth service channel on first master control borad by third and fourth selector switch respectively with second master control borad on the 5th link to each other with the 6th selector switch, and the described the 5th links to each other respectively with first and second service ports on described second master control borad with the 6th selector switch.
B3, first and second service channels on second master control borad are connected with first and second service ports on this plate respectively with the 6th selector switch by the 5th;
B4, third and fourth service channel on second master control borad is linked to each other with first and second selector switches on first master control borad respectively with the 8th selector switch by the 7th, and described first and second selector switches are connected with first and second service ports on first master control borad respectively.
The present invention is under the situation of dual master control, and the data service of master control borad need be participated in by the first master control borad Master and the second master control borad Slave, is promptly coupled together by any two service ports of described Master and Slave and finishes.So, respectively any two service ports among described Master and the Slave are coupled together in twos by at least eight polyfunctional selector switches, and, one end of wherein said four selector switches is coupled together with service channel respectively, also just says by selector switch service channel and service port are coupled together, the realization business datum alternately.When first master control borad and second master control borad switched, system selected the service port on the master control borad wherein to be electrically connected with service channel automatically.Detect when unusual in system, according to method of the present invention, any two service ports among Master and the Slave are coupled together in twos by selector switch, when carrying out the switching of Master and S1ave, no matter how active and standby master control borad switches, switching on the physical connection can not take place in service port, more can not cause professional interruption.For master control system, the present invention only uses any two service ports in the master control borad, and two other service port does not utilize.This is in order to make first and second master control borads under the present embodiment promptly be applicable to master control system, also to be applicable to single master control system, therefore, must on the master control borad four service ports must being arranged at this moment.That is to say that under the situation of single master control, described four service ports all will be used.In addition, the present invention also uses on single master control system, has only a master control borad, i.e. Master, and Slave does not exist, four service ports on this master control borad are all available.
Described selected cell comprises the selector switch that can realize selection function, and described selector switch comprises three I/O pins at least, is used to select two pins to be electrically connected with service channel.The preferred a kind of selector switch of present embodiment, its functional schematic sees Fig. 3 for details, functional block diagram by selector switch is as can be seen: by the control to coherent signal OE/MUX, IN/OUT both can be communicated with IN0/OUT0, also can be communicated with IN1/OUT1.But at any one time, can only there be a docking port to be communicated with.Under the situation about being communicated with as IN/OUT and IN0/OUT0, between IN/OUT and the IN1/OUT1, just can not be communicated with between IN0/OUT0 and the IN1/OUT1.
The MUX signal is selected the signal source of certain service port, and for the IN/OUT service port, if MUX is a low level, this service port is connected with IN0/OUT0 so, if MUX is a high level, the IN/OUT service port is connected with the IN1/OUT1 service port so.Owing to do not relate to the interconnection of IN0/OUT0 service port and IN1/OUT1 service port among the present invention, so do not use MUX0 and MUX1 control signal, OE is the control signal of output enable, and service port can be exported when OE was low level, and service port is forbidden output during for high level.Be low level at MUX and OE0 so, and OE1 is when being high level, IN/OUT service port and the interconnection of IN0/OUT0 service port are high level at MUX, and OE1 is a low level, and when OE0 was high level, the IN/OUT service port interconnected with the IN1/OUT1 service port.
Therefore, the present invention couples together by preceding two service ports (or any two service ports) of described selector switch with described Master and Slave, when system detects when unusual, no matter how Master and Slave (primary and backup master control borad) switch, switching on the physical connection can not take place in service port, just can not cause professional interruption.
In addition, the present invention also provides the switching device shifter of preferred service port under a kind of master control system, and the structural representation of described switching device shifter sees Fig. 4 for details, comprises first master control borad 11, second master control borad 12.Described first master control borad comprises: a plurality of service channels 110 (being service channel 1, service channel 2---service channel n), with service channel respectively corresponding functional select switch 111 and a plurality of Master service port 112 (be Master service port 1, Master service port 2---Master service port n); Second master control borad comprises: a plurality of service channels 120 (are service channel 1, service channel 2---service channel n), corresponding respectively with service channel (is Slave service port 1 to functional select switch 121 and a plurality of Slave service port 122, Slave service port 2---Slave service port n), in this case, total 2n service port in first and second master control borads, because the service channel of first and second master control borads all is n, thereby the service port of selecting for use is n generally speaking, but the n that selects for use a service channel can be all on first master control borad, also can be all on second master control borad, also can first and second master control borads on each some.
For convenience of description, be that example describes with preceding two service ports on first master control borad and second master control borad below, its structural representation sees Fig. 5 for details.Switching device shifter schematic diagram for service port most preferred embodiment in the master control system of the present invention.Described switching device shifter comprises: and four service ports on first master control borad 11 (or Master11) and second master control borad 12 (or Slave12) and this master control borad (Port1～Port4) and four service channels (GE1～GE4); At least eight selected cells (Switch1～Switch8), wherein four selected cells that are positioned on first master control borad link to each other with four service ports on first master control borad with four service channels respectively; Other four selected cells that are positioned on second master control borad link to each other in twos with described four selected cells on first master control borad; Be used for selecting and connecting service channel and service port; Linkage unit 13 selects the service channel on arbitrary master control borad to be electrically connected with described service port by selected cell.
Described eight selected cells comprise that eight selector switches (are Switch1～Switch8), and described selector switch comprises three input/output interface (IN/OUT at least, IN0/OUT0 IN1/OUT1), is used to select corresponding on one of them service port and first or second master control borad.
Its concrete connection sees Fig. 5 for details, as can be known from Fig. 5, dual master control service port handoff technique scheme is: for convenience of description, the present invention represents two master control borads respectively with Master and Slave, in machine system, between the master control borad and the data interaction between master control borad and the business board realize by back panel connector or lead.In Fig. 5, the present invention is that example illustrates that the part in the described square frame is come line by back panel connector with the back panel connector.Described GE1～GE4 represents the gigabit service channel that exchange chip provides in Master and the Slave master control borad respectively; Described Port1～Port4 represents Master and four external service ports of Slave master control borad respectively; Switch1～Switch 8 represents described selector switch respectively, and as can be seen from the figure, each switch has three interfaces, IN/OUT, IN0/OUT0, IN1/OUT1; Three interfaces at a time can only have two interfaces to connect.0 represent the IN0/OUT0 interface in the drawings, 1 represents the IN1/OUT1 interface, and not specified interface is represented the IN/OUT interface.
As shown in Figure 5, under the situation of single master control, Switch1 is communicated with IN/OUT interface and IN0/OUT0 interface (the IN1/OUT1 interface is not used), Switch2 is communicated with IN/OUT interface and IN0/OUT0 interface (the IN1/OUT1 interface is not used), Switch3 is communicated with IN/OUT interface and IN0/OUT0 interface (the INI/OUT1 interface is not used), and Switch4 is communicated with IN/OUT interface and IN0/OUT0 interface (the IN1/OUT1 interface is not used).This moment, we can be clearly seen that, (GE1～(Port1～Port4), this moment, four service ports were all available GE4) directly to have linked four external service ports of this plate for four service channels that the veneer exchange chip provides.
Under the dual master control situation, similar under the control situation of selector switch and the single master control situation if having only a master control borad, here repeat no more.
Under the dual master control situation, if two master control borads are arranged, have only four service channel GE1～GE4 of Master this moment is available, and four service channel GE1～GE4 of Slave are unavailable.At this moment Switch1 is communicated with IN/OUT interface and IN0/OUT0 interface (the IN1/OUT1 interface is not used), and Switch2 is communicated with IN/OUT interface and IN0/OUT0 interface (the IN1/OUT1 interface is not used), and the Port1 of Master master control borad and Port2 can use so.Switch3 is communicated with IN/OUT interface and IN1/OUT1 interface (the IN0/OUT0 interface is not used), Switch4 is communicated with IN/OUT interface and IN1/OUT1 interface (the IN0/OUT0 interface is not used), the GE3 of Master master control borad and GE4 are connected on the backboard by selector switch so, by the cabling of backboard, link respectively on the IN1/OUT1 of selector switch Switch5 and Switch6 again.On the Slave master control borad, Switch5 is communicated with IN/OUT interface and IN1/OUT1 interface (the IN0/OUT0 interface is not used), Switch6 is communicated with IN/OUT interface and IN1/OUT1 interface (the IN0/OUT0 interface is not used), the Port1 of Slave master control borad is connected to the GE3 of Master master control borad at this moment, and Port2 is connected on the GE4 of Master master control borad, and the Port1 of Slave master control borad and Port2 can use so.For the Port3 and the Port4 of Slave master control borad, Switch7 and Switch8 are communicated with IN/OUT and IN0/OUT0, because the GE of Slave master control borad is unavailable, so Port3 and Port4 are also unavailable.
Detect when unusual in system, be again under the dual master control situation, if active and standby switching takes place, Slave becomes Master so, Master becomes Slave, basic and the Master of the control situation of selector switch is main, Slave is identical for situation about being equipped with, because no matter how Master and Slave master control borad switch, its all by selector switch preceding two service ports in the described master control borad being connected of the two carries out, in the process of Master and Slave switching, the interruption of physical connection can not take place in the service port between Master and the Slave, and just the service channel that will link to each other with the Master master control borad switches to the service channel that links to each other with the Slave master control borad.Thereby guarantee that the data between Master and the Slave are mutual normally.
But, the present invention is not limited to the connected mode of the symmetrical service port on described first and second master control borads, also can be used for connecting the non-symmetrical service port on first and second master control borads, promptly choose any one service port on first master control borad respectively, and at any three ports of selecting on second master control borad, the service port of choosing is connected by the menu switch respectively, and its catenation principle is same as described above, here repeats no more.
The structural representation of described selector switch sees above-mentioned Fig. 3 for details, and it realizes principle as mentioned above, here repeats no more.The control of described selector switch is that software is realized by read-write register.That is to say that the logic control chip of veneer provides the control register interface for central processing unit, software can carry out read-write operation to control register by central processing unit, thereby finishes the control of selector switch.
In master control system of the present invention, not only reduced the loss that brings when primary and backup master control borad switches, also avoided the interruption of business when active and standby the switching.Thereby improved the competitiveness of product on market, improved client's satisfaction.But the present invention has more than to be limited to and uses 8 selector switches, can also select for use a device to realize the switching of 4 road service ports, and the principle of its realization is identical with the present invention, here repeats no more.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1, the changing method of service port in a kind of master control system, described master control system comprises first and second master control borads, wherein backuping each other of first and second master control borads is characterized in that, comprising:
A. need to select some service ports of use all service ports from first and second master control borads arbitrarily;
B. from first and second master control borads, select some corresponding business passages to connect described service port respectively by selected cell;
C. when described master control system switches between first and second master control borads, the service channel of the master control borad that activation will switch to, and those service channels are electrically connected with service port by selected cell.
2, according to the changing method of service port in the described master control system of claim 1, it is characterized in that,
Described steps A further comprises: choose any two service ports on first and second master control borads respectively;
Described step B further comprises:
Two corresponding business passages on described first master control borad are linked to each other with two service ports on this plate by selected cell respectively, and two service channels link to each other with two service ports on second master control borad by selected cell respectively in addition;
Two service channels on second master control borad are linked to each other respectively with two service ports on this plate by selected cell, and two service channels link to each other respectively by two service ports on selected cell and first mainboard in addition;
Described step C further comprises: when first master control borad and second master control borad switch, activate respectively with first or second master control borad on four corresponding business passages, and the service channel on another piece master control borad is unavailable this moment.
3, according to the changing method of service port in claim 1 or the 2 described master control systems, it is characterized in that, described selected cell comprises a plurality of selector switches, and described each selector switch comprises three input/output interfaces at least, and synchronization is used to select one of them service port to be electrically connected with corresponding business passage on first or second master control borad.
4, according to the changing method of service port in claim 1 or the 2 described master control systems, it is characterized in that the specific implementation process of described step B is:
B1, first and second service channels on first master control borad are connected with first and second service ports on this plate respectively by first and second selector switches;
B2, with third and fourth service channel on first master control borad by third and fourth selector switch respectively with second master control borad on the 5th link to each other with the 6th selector switch, and the described the 5th links to each other respectively with first and second service ports on described second master control borad with the 6th selector switch.
B3, first and second service channels on second master control borad are connected with first and second service ports on this plate respectively with the 6th selector switch by the 5th;
B4, third and fourth service channel on second master control borad is linked to each other with first and second selector switches on first master control borad respectively with the 8th selector switch by the 7th, and described first and second selector switches are connected with first and second service ports on first master control borad respectively.
5, according to the changing method of service port in the described master control system of claim 4, it is characterized in that first, second, third on described first master control borad and the 4th selector switch link to each other with the 8th selector switch with the 5th, the 6th, the 7th of second master control borad respectively in twos by back panel connector.
6, according to the changing method of service port in the described master control system of claim 1, it is characterized in that,
Described steps A specifically comprises: choose any one service port of first master control borad and any three service ports on second master control borad;
Described step B specifically comprises:
A corresponding business passage on described first master control borad is linked to each other with a service port on this plate by selected cell on this plate respectively, and three service channels link to each other with three service ports on second master control borad by remaining selected cell respectively in addition;
Three service channels on second master control borad are linked to each other respectively with three service ports on this plate by the part selected cell on this plate, and the residue selected cell that another service channel passes through on this plate links to each other with service port on first mainboard;
Described step C specifically comprises: when first master control borad and second master control borad switch, activate respectively with first or second master control borad on four corresponding business passages, and the service channel on another piece master control borad is unavailable this moment.
According to the changing method of service port in the described master control system of claim 6, it is characterized in that 7, the specific implementation process of described step B is:
B1, first service channel on first master control borad is connected with first service port on this plate by first selector switch;
B2, with on first master control borad second, third with the 4th service channel by second, third with the 4th selector switch respectively with second master control borad on the 5th, the 6th link to each other with the 7th selector switch, and the described the 5th, the 6th with the 7th selector switch and described second master control borad on first, second link to each other respectively with the 3rd service port.
B3, with on second master control borad first, second with the 3rd service channel by the 5th, the 6th with the 7th selector switch respectively with this plate on first, second be connected with the 3rd service port;
B4, the 4th service channel on second master control borad is linked to each other with second selector switch on first master control borad respectively by the 8th selector switch, and described second selector switch is connected with second service port on first master control borad respectively.
8, the switching device shifter of service port in a kind of master control system, comprise: first master control borad and second master control borad, and service port on the described master control borad and service channel corresponding with it, has a part in the described service port at least as current use service port, it is characterized in that described device also comprises:
Selected cell, respectively with first and second main control units on service channel link to each other with service port, be used to realize the continuity of the first and second master control borad switchings according to business;
Switch control unit links to each other with selected cell, is used to control the strobe state of service channel and selected cell.
9, the switching device shifter of service port in the described according to Claim 8 master control system, it is characterized in that, described selected cell comprises a plurality of selector switches, and described each selector switch comprises three input/output interfaces at least, and synchronization is used to select one of them service port to be electrically connected with corresponding business passage on first or second master control borad.
10, the switching device shifter of service port according to Claim 8 or in the 9 described master control systems, it is characterized in that, described device also comprises: back panel connector, respectively with first master control borad on first, second, third link to each other with the 8th selector switch with the 5th, the 6th, the 7th of the 4th selector switch and described second master control borad, be used to realize the mutual of business datum between the described master control borad.
11, according to the switching device shifter of service port in the described master control system of claim 9, it is characterized in that described selected cell also comprises: two service port switches, four service port switch or programmable logic devices.
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| CNB2005100735846A CN100372253C (en) | 2005-06-02 | 2005-06-02 | Switching method and device for service port in double master control system |
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