CN1592132A - Master stand-by inkage switching method of cascade one-board - Google Patents
Master stand-by inkage switching method of cascade one-board Download PDFInfo
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- CN1592132A CN1592132A CN 03156494 CN03156494A CN1592132A CN 1592132 A CN1592132 A CN 1592132A CN 03156494 CN03156494 CN 03156494 CN 03156494 A CN03156494 A CN 03156494A CN 1592132 A CN1592132 A CN 1592132A
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Abstract
This invention discloses a method for cascade one-board master and standby linked inversion, in which, the instruction controlling inversions between cascade one-boards is transferred between cascade single boards including the following steps: if the central frame master single-board is abnormal, the master/standby of the central frame board are inverted, an order is delivered to the cascade frame single board to control the cascade frame for master/standby inversion. If it's normal, then the master and standby boards deliver enquiry to the cascade board separately, if the cascade frame single board is cascaded with the master board, then the cascade board is invented with the master/standby and delivers instruction to the central board for inversion. If the cascade feedback instruction shows that the master and standby are not the same, thus they deliver orders separately to control the cascade for master/standby conversion.
Description
Technical field
The present invention relates to the masterslave switchover technology, be meant the method that a kind of cascade one-board master stand-by linkage is switched especially.
Background technology
When telecommunication apparatus carries out the interconnection of many frames,, adopt the veneer of two groups of cascades to backup each other at Main subrack and cascade frame in order to improve the reliability of equipment.Fig. 1 is the veneer schematic diagram of two groups of cascades, and as shown in Figure 1, it is interconnected that the main veneer M1 of using of Main subrack and cascade one-board S1 pass through service line, and M2 links to each other by another service line with S2, two groups of mutually redundant cascade one-boards of formation.
Under the normal condition, the Main subrack master sends business datum to cascade frame master with veneer S1 with veneer M1, when Main subrack M1 and M2 switch, Main subrack sends the passage of business datum and also will switch along with the masterslave switchover of M1, M2, it is that the master uses state that M2 switches, and sends business datum by M2 to S2.In the active and standby plate reversed process of Main subrack, the activestandby state information of each veneer of Main subrack must be notified the S1 and the S2 veneer of cascade frame at once, carry out corresponding masterslave switchover by cascade frame veneer according to the M1 of Main subrack and the activestandby state of M2, it is main using that S2 is switched, maintenance is active and standby consistent with the Main subrack veneer, to receive main business datum with M2.In like manner, if the activestandby state of S1, S2 switches, also need M1, M2 with active and standby information notice Main subrack, make the timely active and standby switching of Main subrack veneer, the maintenance Main subrack is active and standby consistent with cascade frame cascade one-board.
At present, the activestandby state information of veneer communicates by the communication channel beyond the business datum passage.Therefore, Main subrack and cascade frame are except having normal two business datum passage business transferring data, and Main subrack main and standby boards M1 also will link to each other by All other routes with S2 with cascade frame main and standby boards S1 respectively with M2 and transmit the activestandby state information of veneer as communication channel.Present implementation is the standard serial data format transmission single board main/standby state information by high speed data link control (HDLC) passage, master stand-by linkage with the cascade one-board of realizing Main subrack and cascade frame is switched, and keeps the active and standby consistent of Main subrack and cascade frame cascade one-board.
But, at cascade one-board M1 and S1, M2 and the S2 of two frames, intersect between veneer M1 and S2, M2 and the S1, the HDLC circuit is set transmits above-described information as communication channel.So not only make the single plate structure complexity, and since the single board state signal walk that the communication time delay of HDLC circuit and time delay that business datum is walked service channel differ may be bigger, not necessarily can guarantee the real-time switching of receiving terminal, easy formation is switched repeatedly.
Summary of the invention
In view of this, main purpose of the present invention is the method that provides a kind of cascade one-board master stand-by linkage to switch the master stand-by linkage of finishing cascade one-board with regard to may command by existing business datum passage to be switched.
Among the present invention, the main and standby boards of Main subrack main and standby boards and cascade frame carries out cascade, the instruction that control is switched between the cascade one-board is with the digital bit bit representation less than the service channel data byte, transmit between the veneer of phase cascade by service channel, if the Main subrack master is unusual with veneer, then the Main subrack veneer carries out masterslave switchover, and sends instruction to cascade frame veneer, and control cascade frame veneer carries out corresponding masterslave switchover;
If the Main subrack master is normal with veneer, then the Main subrack main and standby boards sends query statement to cascade one-board respectively, if it is unusual with the cascade frame veneer of veneer institute cascade with the Main subrack master, then cascade frame veneer carries out masterslave switchover, and to Main subrack veneer transmission instruction, control centre's frame veneer carries out masterslave switchover; If it is inconsistent that cascade frame veneer return instruction is represented with the Main subrack single board main/standby, then the Main subrack main and standby boards sends instructions down respectively, and control cascade frame veneer carries out masterslave switchover; If use normally with the veneer master of veneer institute cascade with the Main subrack master, then process ends.
Wherein, this method further comprises: Bit data and the business datum of controlling the instruction correspondence of switching between the cascade one-board are combined into a word, transmit between the veneer of phase cascade by service channel.
Wherein, this method further comprises: will instruct and represent with 3 Bit datas, digital bit is placed on professional assigned address and the 13 bit business datums that transmit word and forms a word, transmits between the veneer of phase cascade by service channel.Wherein, the instruction represented of described usefulness 3 Bit datas comprises:
000: the veneer that is used for Main subrack requires the protocol status of cascade one-board protocol synchronization Main subrack veneer;
100: the master who is used for Main subrack inquires about cascade frame cascade one-board state with the veneer indication;
110: the standby board indication inquiry cascade frame cascade one-board state that is used for Main subrack;
011: the veneer indication cascade frame cascade one-board that is used for Main subrack carries out masterslave switchover;
111: the protocol synchronization response of cascade frame veneer agreement and Main subrack cascade one-board is returned;
101: the response of cascade frame single-board device abnormality is returned;
001: cascade frame veneer and the response of Main subrack single board main/standby consistent state are returned;
010: cascade frame veneer and the response of Main subrack single board main/standby inconsistent state are returned.
Wherein, this method further comprises: the Main subrack veneer sends 000 to the cascade one-board of cascade frame, returns 111 after the cascade one-board protocol synchronization Main subrack veneer agreement.
Wherein, describedly carry out main according to this agreement and further comprise:
Whether if the Main subrack veneer receives 111, it is normal then at first to inquire about this veneer, if normal, and be in and mainly then issue 100 with state, issues 110 if be in stand-by state; If this veneer is unusual, and is in and mainly then issues 011, and switch, then issue 110 if be in stand-by state to standby with state;
If the Main subrack veneer receives 001, then finish;
If the Main subrack veneer receives 010, then the veneer to cascade sends 011;
If the Main subrack veneer receives 101, if being in the master, then switches to standby by veneer with state, finish; If veneer is in stand-by state, finish;
If cascade frame veneer receives 011, if being in the master, veneer uses state, then switch to standby, finish; If veneer is in stand-by state, finish;
Whether if cascade frame veneer receives 100, it is normal then at first to inquire about this veneer, if normal, and be in and mainly then send 001 with state, sends 010 if be in stand-by state; If this veneer is unusual, and is in and mainly then sends 101, and switch,, then send 101 if be in stand-by state to standby with state;
Whether if cascade frame veneer receives 110, it is normal then at first to inquire about this veneer, if normal, and be in and mainly then send 010 with state, sends 001 if be in stand-by state; If this veneer is unusual, and is in and mainly then sends 101, and switch,, then send 101 if be in stand-by state to standby with state.
Wherein, if described Main subrack veneer received 010 o'clock, further comprised: at the Main subrack veneer counter 1 is set and adds up, if when not being added to the threshold values of counter 1, this veneer if be in stand-by state, then issues 110 if be in and mainly then issue 100 with state; If when being added to the threshold values of counter 1, this veneer then sends 011 to the veneer of cascade.
Wherein, if described Main subrack veneer received 101 o'clock, further comprised: at the Main subrack veneer counter 2 is set and adds up, if when not being added to the threshold values of counter 2, this veneer if be in stand-by state, then issues 110 if be in and mainly then issue 100 with state; If when being added to the threshold values of counter 2, if being in the master, then switches to standby by veneer with state, finish; If veneer is in stand-by state, finish.
Wherein, the threshold values of counter 2 is less than the threshold values of counter 1.
By said method as can be seen, the present invention is grouped together single board state information and command information and business datum, the business datum passage that provides by the interframe interconnection service line carries out the communication between frame, service channel is transmit traffic data and these non-business datums simultaneously, do not need extra communication channel, save original HDLC circuit and corresponding interface, saved system cost, reduced the complexity of single plate structure.On the other hand, identical by the business datum channel transferring information with the time delay of business transferring data, therefore, guarantee real-time that master stand-by linkage switches with fast, avoid occurring the switching repeatedly of activestandby state of veneer.
Description of drawings
Fig. 1 is Main subrack and a cascade frame connection diagram under the prior art.
Fig. 2 is a logic state machine schematic diagram of the present invention.
Embodiment
The present invention is a self-defined cover turning protocol between cascade one-board, transmits together by service line between the veneer and business datum, uses switching of this turning protocol control veneer, realizes that the master stand-by linkage of the cascade one-board of Main subrack and cascade frame is switched.In case Main subrack main and standby boards M1, M2 switch each plate respectively by S1, the S2 of notice of settlement cascade frame, control cascade single board main/standby interlock is switched, and guarantees to switch the active and standby unanimity in back; In like manner, if cascade frame S1 and S2 switch, S1 and S2 by notice of settlement M1, M2, make the Main subrack veneer carry out corresponding switching respectively.
Turning protocol between the cascade one-board comprises that Query Board state, response instruction, indication instruction such as switch.Here represent 8 protocol instructions with 3 bits, 3 bits are placed business datum, take appointment 3 bit positions of former business datum 16 bit words, remaining 13 bits still are used for transmit traffic data.In data transmit, the Main subrack veneer is with this director data and 16 bit informations after business datum combines, send to the business datum passage and be sent to the veneer of cascade, after cascade one-board receives this 16 bit information by the business datum passage, read the protocol instructions of 3 bits again from assigned address, carry out information interaction by these 8 protocol instructions between the veneer of cascade and control is switched.
Below 8 protocol instructions representing with 3 bits 000 to 111 are that example is to the detailed description of the invention.The represented content of described 3 bit protocol instructions specifically is expressed as follows:
000: the veneer that is used for Main subrack requires the cascade one-board agreement to return initial condition, makes the protocol status of the synchronous Main subrack veneer of cascade one-board protocol status;
100: the master who is used for Main subrack inquires about cascade frame cascade one-board state with the veneer indication;
110: the standby board indication inquiry cascade frame cascade one-board state that is used for Main subrack;
011: the veneer indication cascade frame cascade one-board that is used for Main subrack carries out masterslave switchover;
111: cascade frame veneer agreement is returned the initial condition response and is returned, and expression realizes synchronously with the protocol status of the veneer of Main subrack cascade;
101: the response of cascade frame single-board device abnormality is returned;
001: cascade frame veneer and the response of Main subrack single board main/standby consistent state are returned;
010: cascade frame veneer and the response of Main subrack single board main/standby inconsistent state are returned.
Between two groups of cascade one-boards, use this protocol instructions respectively separately, switch control.When if the Main subrack that detects and the veneer of cascade frame cascade have arbitrary to be in the master with abnormal state, active and standby inconsistent state, the agreement according to the present invention, the control veneer carries out corresponding masterslave switchover, and keeping main is the single board main/standby state consistency of normal veneer and cascade with veneer.Fig. 2 switches the state machine of control for this agreement of use of the present invention, state machine is meant that sending end sends after the agreement a kind of mechanism according to protocol changes self current state of returning, with reference to accompanying drawing 2, the principle of using agreement of the present invention to switch control is further described.
Wherein, when initial condition, and in the fixing clock cycle, promptly when bringing into use this agreement, at first to realize agreement between Main subrack and the cascade frame synchronously, the Main subrack main and standby boards sends 000 to cascade one-board respectively, after cascade frame veneer receives 000, agreement is returned initial condition, and returns 111 to the Main subrack veneer, and expression is synchronous with the agreement realization of Main subrack veneer.After the veneer of cascade was synchronous, state machine work was as follows:
The Main subrack veneer receives 001,010 and 101, and switches according to the state of veneer, or issues 011,100 or 110 protocol instructions to the cascade frame veneer of cascade.
The veneer of Main subrack and cascade frame cascade synchronously after, whether Help Center's frame main and standby boards normal at first respectively, if normal, and this veneer is in and mainly then issues 100 with state; If this veneer is in stand-by state and then issues 110.If current single board is unusual, and this veneer is in stand-by state, then issues 110; If this veneer is in and main then issues 011 with state, and the active and standby interlock circuit by two veneers in the Main subrack, switch with standby board, switch and be stand-by state.
When veneer receives 001, the single board main/standby state consistency that the veneer of expression institute cascade and Main subrack receive this agreement, the counter 1 and 2 of this veneer clearly then, described counter will be described hereinafter.
When veneer receives 010, illustrate that the veneer of institute's cascade and the single board main/standby state that Main subrack receives this agreement are inconsistent, send query statement to cascade one-board once more according to the threshold values of counter 1, if this veneer is in stand-by state, then issue 110 to cascade one-board; If being in the master, this veneer then issues 100 with state.After reaching counter 1 threshold values, current single board sends 011 to the veneer of cascade, requires cascade one-board to carry out masterslave switchover.
When veneer receives 101, illustrate that the single board state of institute's cascade is unusual, send query statement to cascade one-board once more according to the threshold values of counter 2, if this veneer is in stand-by state, then send 110 to cascade one-board; If being in the master, veneer then sends 100 to cascade one-board with state.After reaching counter 2 threshold values, if this veneer is the main state of using, then by the active and standby interlock circuit of two veneers in the Main subrack, this master switches with veneer and standby board, switches to be stand-by state, finishes; If it is this veneer is a stand-by state, then motionless.
Cascade frame veneer receives 011,100 and 110, and switches according to the state of veneer, or sends 001,010 or 101 protocol instructions to the Main subrack veneer of cascade.
When veneer receives 011, if this veneer is in the main state of using, then pass through the active and standby interlock circuit of two veneers in the cascade frame, this master switches with veneer and standby board, switches to be stand-by state, finishes; If it is veneer is in stand-by state, then motionless.
Whether when veneer receives 100, it is normal then at first to inquire about this veneer, if normal, and this veneer is in and mainly then sends 001 to the Main subrack veneer of cascade with state; If this veneer is in stand-by state and then sends 010.If this veneer is unusual, and this veneer is in and mainly then sends 101 to the Main subrack veneer of cascade with state, and the active and standby interlock circuit by two veneers in the cascade frame, and this master switches with veneer and standby board, switches to be stand-by state; If this veneer is in stand-by state, then motionless, send 101.
Whether when veneer receives 110, it is normal then at first to inquire about this veneer, if normal, and be in and mainly then send 010 to the Main subrack veneer of cascade with state; If this veneer is in stand-by state and then sends 001.If this veneer is unusual, and this veneer is in and mainly then sends 101 to the Main subrack veneer of cascade with state, and the active and standby interlock circuit by two veneers in the cascade frame, and this master switches with veneer and standby board, switches to be stand-by state; If this veneer is in stand-by state, then motionless, send 101.
More than 8 protocol instructions between the Main subrack veneer of two groups of cascades and cascade one-board, transmit respectively simultaneously, carry out the master stand-by linkage of cascade frame veneer according to described state machine and switch control, guarantee behind certain single-board host-slave switching, the veneer of phase cascade carries out interlock to be switched, and keeps veneer active and standby consistent of Main subrack and cascade frame phase cascade.If the current single board state is as follows: A1, A2 are the active and standby plate of Main subrack, and B1, B2 are the active and standby plate of cascade frame, A1 cascade B1, A2 cascade B2.Be located at current time, B1 breaks down, and as example, the process that cascade one-board master stand-by linkage of the present invention is switched further describes.
At first in the current clock cycle, A1, A2 issue 000 to B1, the B2 of cascade respectively simultaneously, and A1 and A2 also receive 111 agreements of returning, and realize the synchronous of Main subrack and cascade frame veneer agreement, and then, reversed process is as follows:
Step 1, A1 reads self single board state validation of information self single board state, and the A1 veneer is normal, so A1 sends agreement 100 by the business datum passage to the cascade one-board B1 of cascade frame, inquiry B1 state;
Simultaneously, A2 reads self single board state validation of information self single board state, and the A2 veneer is normal, so A2 sends agreement 110 by the business datum passage to the cascade one-board B2 of cascade frame, inquiry B2 state.
Step 2, B1 receives that the main of Main subrack instructed with the board querying cascade one-board at 100 o'clock, reads self single board state validation of information self single board state, because B1 equipment is undesired, so B1 returns 101 to A1; B1 and B2 carry out activestandby state and switch according to active and standby interlock circuit simultaneously, switch to be stand-by state;
Simultaneously, B2 receives that the standby board inquiry cascade one-board of Main subrack instructed at 110 o'clock, reads self single board state validation of information self single board state, because B2 equipment is normal, then returns 001.Afterwards, B2 and B1 carry out activestandby state and switch according to active and standby interlock circuit, and it is the main state of using that B2 switches.
Step 3, A1 receives 101 o'clock that B1 returns, and according to the inquiry cascade frame number of times that counter 2 is set, A1 can send 100 once more and inquire about from frame equipment B 1 with the affirmation state;
Simultaneously, A2 receives 001, counter 1 sum counter 2 on the clear A2, no longer action.
Step 4 after B1 receives 100, reads self single board state validation of information self single board state, because B1 equipment is undesired, so B1 returns 101 to A1; This moment, B1 was in stand-by state, and hold mode is constant.
Step 5, A1 receives 101 o'clock that B1 returns, the counter 2 on the inquiry A1, if reached the threshold values of counter 2, i.e. the number of times of the inquiry cascade one-board of She Dinging, then the A1 of Main subrack and A2 switch according to active and standby interlock circuit, A1 switches and is that it is the main state of using that stand-by state, A2 are switched.Finish once arbitration and switch, realize active and standby unanimity.And in inquiry next time, because active and standby unanimity, with the counter on A1 and the A2 clear 0.If do not reach the threshold values of counter 2, then repeating step 3 to 5.
Wherein the purpose of inquiring about cascade single board state number of times once more by counter 1 sum counter 2 is to avoid two groups of cascade one-boards to send simultaneously to switch instruction, occurs switching repeatedly.Wherein, the threshold values of counter 2 is less than the threshold values of counter 1, reason is that perhaps the masterslave switchover of the B2 of same frame and B1 can occur in before or after the 110 Query Board states that B2 receives that A1 sends, more than be to think that switching of B2 and B1 occurs in B2 and receive after the 110 Query Board states for example.When switching action occurs in B2 and receives before the 110 Query Board states, then in the step 2 of last example, B2 receives that the standby board inquiry cascade one-board of Main subrack instructed at 110 o'clock, read self single board state information, because B1 and B2 switch, then B2 equipment is main usefulness at this moment, thus B2 to A2 return 010 the indication active and standby inconsistent.
Accordingly, in step 3, A2 receives 010, and according to the inquiry cascade frame number of times that the counter on the A2 1 is set, A2 can send 110 inquiries once more from frame equipment B 2 states; The disposition of A1 is identical with last example.
In step 4, after B2 receives 100, read self single board state validation of information self single board state, because B2 is main usefulness, so B2 returns 010 to A2; The disposition of A1 is identical with last example.
Because the threshold values of counter 2 is less than the threshold values of counter 1, therefore A1 and A2 can be at first cause masterslave switchover by the reason of counter 2 in step 5, and it is main usefulness that A2 switches, and this moment A2 counter 1 be not added to threshold values as yet.A2 receive the current transmission of B2 010 after because A2 has been the main state of use, then to B2 transmission 100, and no longer be 110, B2 receives the normal and main usefulness of 100 back detections self, then returns the active and standby unanimity of 001 expression, A2 receives clear counter 1 sum counter 2 in 001 back, finishes masterslave switchover one time.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1, a kind of cascade one-board master stand-by linkage method of switching, the main and standby boards of Main subrack main and standby boards and cascade frame carries out cascade, it is characterized in that this method comprises: the instruction that control is switched between the cascade one-board is with the digital bit bit representation less than the service channel data byte, transmit between the veneer of phase cascade by service channel
If the Main subrack master is unusual with veneer, then the Main subrack veneer carries out masterslave switchover, and sends instruction to cascade frame veneer, and control cascade frame veneer carries out corresponding masterslave switchover;
If the Main subrack master is normal with veneer, then the Main subrack main and standby boards sends query statement to cascade one-board respectively, if it is unusual with the cascade frame veneer of veneer institute cascade with the Main subrack master, then cascade frame veneer carries out masterslave switchover, and to Main subrack veneer transmission instruction, control centre's frame veneer carries out masterslave switchover; If it is inconsistent that cascade frame veneer return instruction is represented with the Main subrack single board main/standby, then the Main subrack main and standby boards sends instructions down respectively, and control cascade frame veneer carries out masterslave switchover; If use normally with the veneer master of veneer institute cascade with the Main subrack master, then process ends.
2, method according to claim 1, this method further comprises: Bit data and the business datum of controlling the instruction correspondence of switching between the cascade one-board are combined into a word, transmit between the veneer of phase cascade by service channel.
3, method according to claim 1, this method further comprises: will instruct and represent with 3 Bit datas, digital bit is placed on professional assigned address and the 13 bit business datums that transmit word and forms a word, transmits between the veneer of phase cascade by service channel.
4, method according to claim 3, the instruction that described usefulness 3 Bit datas of this method are represented further comprises:
000: the veneer that is used for Main subrack requires the protocol status of cascade one-board protocol synchronization Main subrack veneer;
100: the master who is used for Main subrack inquires about cascade frame cascade one-board state with the veneer indication;
110: the standby board indication inquiry cascade frame cascade one-board state that is used for Main subrack;
011: the veneer indication cascade frame cascade one-board that is used for Main subrack carries out masterslave switchover;
111: the protocol synchronization response of cascade frame veneer agreement and Main subrack cascade one-board is returned;
101: the response of cascade frame single-board device abnormality is returned;
001: cascade frame veneer and the response of Main subrack single board main/standby consistent state are returned;
010: cascade frame veneer and the response of Main subrack single board main/standby inconsistent state are returned.
5, method according to claim 4 is characterized in that this method further comprises: the Main subrack veneer sends 000 to the cascade one-board of cascade frame, returns 111 after the cascade one-board protocol synchronization Main subrack veneer agreement.
6, method according to claim 4, describedly carry out main according to this agreement and further comprise:
Whether if the Main subrack veneer receives 111, it is normal then at first to inquire about this veneer, if normal, and be in and mainly then issue 100 with state, issues 110 if be in stand-by state; If this veneer is unusual, and is in and mainly then issues 011, and switch, then issue 110 if be in stand-by state to standby with state;
If the Main subrack veneer receives 001, then finish;
If the Main subrack veneer receives 010, then the veneer to cascade sends 011;
If the Main subrack veneer receives 101, if being in the master, then switches to standby by veneer with state, finish; If veneer is in stand-by state, finish;
If cascade frame veneer receives 011, if being in the master, veneer uses state, then switch to standby, finish; If veneer is in stand-by state, finish;
Whether if cascade frame veneer receives 100, it is normal then at first to inquire about this veneer, if normal, and be in and mainly then send 001 with state, sends 010 if be in stand-by state; If this veneer is unusual, and is in and mainly then sends 101, and switch,, then send 101 if be in stand-by state to standby with state;
Whether if cascade frame veneer receives 110, it is normal then at first to inquire about this veneer, if normal, and be in and mainly then send 010 with state, sends 001 if be in stand-by state; If this veneer is unusual, and is in and mainly then sends 101, and switch,, then send 101 if be in stand-by state to standby with state.
7, method according to claim 6, it is characterized in that described if the Main subrack veneer received at 010 o'clock, further comprise: at the Main subrack veneer counter 1 is set and adds up, if when not being added to the threshold values of counter 1, this veneer then issues 100 if be in the master with state, if be in stand-by state, then issue 110; If when being added to the threshold values of counter 1, this veneer then sends 011 to the veneer of cascade.
8, method according to claim 7, it is characterized in that described if the Main subrack veneer received at 101 o'clock, further comprise: at the Main subrack veneer counter 2 is set and adds up, if when not being added to the threshold values of counter 2, this veneer then issues 100 if be in the master with state, if be in stand-by state, then issue 110; If when being added to the threshold values of counter 2, if being in the master, then switches to standby by veneer with state, finish; If veneer is in stand-by state, finish.
9, method according to claim 8 is characterized in that, the threshold values of counter 2 is less than the threshold values of counter 1.
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| CNB031564941A CN100362757C (en) | 2003-09-01 | 2003-09-01 | Master stand-by inkage switching method of cascade one-board |
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| CNB031564941A CN100362757C (en) | 2003-09-01 | 2003-09-01 | Master stand-by inkage switching method of cascade one-board |
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| CN1983841B (en) * | 2006-05-11 | 2010-04-07 | 华为技术有限公司 | Method for realizing backup in level connecting system |
| CN1937782B (en) * | 2006-08-04 | 2010-04-14 | 华为数字技术有限公司 | Frame device and its message transmitting method |
| CN101321401B (en) * | 2008-07-02 | 2011-01-19 | 中兴通讯股份有限公司 | Multi-sub frame business control method and system for optical transmission equipment |
| CN102035683A (en) * | 2010-12-20 | 2011-04-27 | 新邮通信设备有限公司 | Control method and system for switching of main board and standby board |
| CN101207409B (en) * | 2006-12-21 | 2012-01-04 | 华为技术有限公司 | Method for taking business turns and single board |
| CN105591894A (en) * | 2015-07-01 | 2016-05-18 | 杭州华三通信技术有限公司 | Method and device for improving inter-board data channel reliability by means of single board of distributed system |
| CN106301967A (en) * | 2016-10-25 | 2017-01-04 | 杭州华为数字技术有限公司 | A kind of method of data synchronization and outband management equipment |
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2003
- 2003-09-01 CN CNB031564941A patent/CN100362757C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1983841B (en) * | 2006-05-11 | 2010-04-07 | 华为技术有限公司 | Method for realizing backup in level connecting system |
| CN1937782B (en) * | 2006-08-04 | 2010-04-14 | 华为数字技术有限公司 | Frame device and its message transmitting method |
| CN101207409B (en) * | 2006-12-21 | 2012-01-04 | 华为技术有限公司 | Method for taking business turns and single board |
| CN101321401B (en) * | 2008-07-02 | 2011-01-19 | 中兴通讯股份有限公司 | Multi-sub frame business control method and system for optical transmission equipment |
| CN102035683A (en) * | 2010-12-20 | 2011-04-27 | 新邮通信设备有限公司 | Control method and system for switching of main board and standby board |
| CN102035683B (en) * | 2010-12-20 | 2013-05-22 | 新邮通信设备有限公司 | Control method and system for switching of main board and standby board |
| CN105591894A (en) * | 2015-07-01 | 2016-05-18 | 杭州华三通信技术有限公司 | Method and device for improving inter-board data channel reliability by means of single board of distributed system |
| CN105591894B (en) * | 2015-07-01 | 2019-03-15 | 新华三技术有限公司 | A kind of method and apparatus that the veneer of distributed system improves data channel reliability between plate |
| CN106301967A (en) * | 2016-10-25 | 2017-01-04 | 杭州华为数字技术有限公司 | A kind of method of data synchronization and outband management equipment |
| CN106301967B (en) * | 2016-10-25 | 2019-10-15 | 杭州华为数字技术有限公司 | A kind of method of data synchronization and outband management equipment |
| US11010086B2 (en) | 2016-10-25 | 2021-05-18 | Huawei Technologies Co., Ltd. | Data synchronization method and out-of-band management device |
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