CN1764079A - Method and system for realizing low end access level router backup - Google Patents
Method and system for realizing low end access level router backup Download PDFInfo
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- CN1764079A CN1764079A CN 200410083789 CN200410083789A CN1764079A CN 1764079 A CN1764079 A CN 1764079A CN 200410083789 CN200410083789 CN 200410083789 CN 200410083789 A CN200410083789 A CN 200410083789A CN 1764079 A CN1764079 A CN 1764079A
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Abstract
The invention relates to a method and system to realize low access router backup. Wherein, arranging two control boards, one as mater board and another as standby; detecting whether the master board normal by the router, if failure, switching the function finished by master board to backup board. This invention overcomes the time delay by warm backup with HSRP protocol, reduces realization cost, and improves router reliability by dual-power backup.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to a kind of method and system that realize low end access level router backup.
Background technology
Along with development of Communication Technique, particularly voice and video traffic popularizes, these voice and video traffic mostly transmit by IP network, therefore more and more higher to the stability and the reliability requirement of router during networking, when router breaks down, the requirement traffic affecting of trying not normally transmits, and just requires router to move incessantly, and router need guarantee that it moves incessantly by corresponding redundancy technique for this reason.
Conventional router only can rely on the redundancy technique of upper-layer protocol to ensure security of operation, but this backup mode has following shortcoming:
(1) time delay is bigger: because upper-layer protocol just can carry out corresponding handover operation after need consulting, therefore, handover delay will arrive 2 to 3 minutes;
(2) network construction cost height: need two routers at least for realizing backup.
Low end access level router adopts HSRP (the Hot Standby RouterProtocol of U.S. Cisco company, heat is equipped with router protocol) agreement realizes Hot Spare, the HSRP agreement utilizes a precedence scheme to select a router that has disposed the HSRP agreement to become the primary route device of acquiescence.For example two routers backup each other, the priority height that is provided with of the priority of a router wherein than another router, and then this router becomes the primary route device, and another is a standby router.
By broadcasting HSRP priority between the router that is provided with the HSRP agreement, the HSRP agreement is selected current primary route device.When the primary route device can not send hello message in predefined a period of time, the standby router that priority is lower became the primary route device.
Therefore, there is following shortcoming in the Hot Spare mode of existing low end access level router:
1, confirm whether hello message is arranged owing to will wait for a period of time, cause time delay bigger, promptly when the primary route device can not be worked, it was main usefulness that backup router can not Upgrade Now, and then caused in this time period, the network blocking-up;
2, the HSRP agreement adopts broadcast packet to send hello message, has increased network overhead;
3, this mode realizes that Hot Spare needs two routers at least, has increased cost;
4, described low end access level router adopts the single power supply mode, in case power failure will cause whole router failure.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of method and system that realize low end access level router backup, thereby the time delay that the Hot Spare mode that the solution prior art provides exists is bigger, increases problems such as network overhead.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of method that realizes low end access level router backup, comprising:
A, two cover control boards are set in low end access level router, a cover is main to use control board, and another set of is standby control board;
Whether B, low end access level router regularly detect main normal with control board;
C, when detect main can't operate as normal with control board, the main function of finishing with control board switched on the standby control board realizes.
Described steps A also comprises:
Low end access level router determines that according to the priority artificial or control board of configuration automatically the high control board of priority is that the master uses control board, and the control board that priority is low is standby control board.
Described steps A also comprises:
A1, the main integrated circuit board that will determine with control board information notice and control board intercommunication.
Described steps A 1 further comprises:
The main signal of determining that regularly changes to the integrated circuit board transmission with the control board intercommunication with control board, described integrated circuit board is identified as the main control board of using by the signal of this variation with the control corresponding plate.
Described step B comprises:
Low end access level router can detect it and whether be in normal operating conditions according to the heartbeat signal that primary, spare control board regularly sends, if detect the heartbeat signal that described control board sends, determine that then it is in normal operating conditions, otherwise, assert that it is not in normal operating conditions.
The present invention also provides a kind of system that realizes low end access level router backup, its structure is made up of two cover control boards and active and standby control device, two cover control boards link to each other with the integrated circuit board of its intercommunication respectively with in the low end access level router, also link to each other simultaneously with active and standby control device, and main by the cover conduct in the active and standby control device control two cover control boards with control board and described integrated circuit board intercommunication, respective plate is sticked into row control.
Described active and standby control device is:
The employing watchdog circuit realizes, regularly detects the heartbeat signal that primary, spare control board sends by described watchdog circuit and determines whether it is in normal operating conditions, and described watchdog circuit can be built in the control board, also can be independent of the control board setting.
Described primary, spare control board also links to each other with integrated circuit board in the low end access level router by the activestandby state line, and described activestandby state line is used to transmit main signal with the control board transmission.
Be respectively arranged with the connecting bus of intercommunication between described primary, spare control board and each integrated circuit board.
The system of described realization low end access level router backup also comprises:
Two supply units: be respectively arranged with separately power line and switch, and all link to each other with primary, spare control board respectively, one in two supply units is used to primary, spare control board to power, and another is used to provide protection;
Power detector: can be arranged on the control board, perhaps be independent of the control board setting, and described power detector links to each other with the output of two supply units respectively, whether be used to detect the supply unit that is in power supply state normal, and alarm when this supply unit is undesired, automatically switch to simultaneously by another means of power.
As seen from the above technical solution provided by the invention, the present invention efficiently solves the time delay of bringing when adopting the HSRP agreement to realize Hot Spare, ensures the real-time of data packet transmission better.Simultaneously, can reduce the realization cost of double copies technical scheme widely.Among the present invention, also realize the duplicate supply backup functionality, thereby further improved the reliability of low end access level router.
Description of drawings
Fig. 1 is the structural representation of system of the present invention;
Fig. 2 is the schematic diagram of control board among Fig. 1;
Fig. 3 is the schematic diagram of system of the present invention;
Fig. 4 is the schematic diagram of bus backup among the present invention;
Fig. 5 is the schematic diagram of power supply backup among the present invention.
Embodiment
Main thought of the present invention is to adopt unique dual control board, duplicate supply design to realize the Hot Spare of low end access level router, thereby makes that active and standby handover delay can be less than 1.6 seconds, and then has guaranteed the real-time of Hot Spare, and greatly reduces network cost.
Described dual control board technology is meant dual control board is set in low end access level router, uses control board as main for one, and another is as standby control board; Under the normal condition, main frame operation in case standby host is found hostdown, switches to main frame immediately, and switching time is less than 1.6 seconds, thereby has promoted the Hot Spare effect of router greatly, has guaranteed the real-time of Network Transmission.
Duplicate supply technology described in the present invention is meant and can realizes two 220V in a cabinet, and is two-48V, three kinds of supply power modes of single 220V list-48V.
At first, to the specific implementation of method of the present invention in conjunction with the accompanying drawings, specifically comprise following processing procedure:
(1) two cover control boards are set in low end access level router, one main one is equipped with, the back at the description of system in the situation that is provided with of detailed description two cover control boards;
(2) low end access level router according to the priority artificial or control board of configuration automatically determine respective priority high be the main control board of use, and the order master enters operating state with control board, realizes function corresponding in low end access level router;
The control board that another priority is low is standby control board then, is used to protect the described main control board of using, so that can't take over its realization function corresponding during operate as normal with control board when main, and to guarantee not interrupting of described router work;
What (3) low end access level router will be determined is main with other cards in the information notice router of control board, as the Wide Area Network interface integrated circuit board, so that other cards are selected this main signal that sends with control board, and the signal of not selecting standby control board to send;
(4) low end access level router regularly detects primary, spare control board and whether is in normal operating conditions, if it is main with control board can't operate as normal the time, and standby control board is working properly, then will lead to switch on the standby control board and realize with the business function on the control board, and implementation (3), notify in the router and the integrated circuit board control board intercommunication with handover information, as the Wide Area Network interface integrated circuit board;
In this processing procedure, low end access level router can detect it and whether be in normal operating conditions according to the heartbeat signal that primary, spare control board regularly sends, if detect the heartbeat signal that described control board sends, determine that then it is in normal operating conditions, otherwise, assert that it is not in normal operating conditions;
Notify the Wide Area Network interface integrated circuit board in the router to realize switching signal by the activestandby state line between primary, spare control board and Wide Area Network interface integrated circuit board, be specifically as follows by main and regularly on the activestandby state line, send signal with control board, and standby control board does not send, so that the Wide Area Network interface integrated circuit board identifies the corresponding main control board of using, and choosing is received main with the signal on the control board.
Method of the present invention also comprises:
Whether the power supply that low end access level router regularly detects primary, spare control board operate as normal, and when the work appearance is unusual, described power supply is switched on the stand-by power supply, be responsible for two cover control boards are powered, thereby avoid inserting because of power failure causes low side by stand-by power supply.
In conjunction with the accompanying drawings system of the present invention is described below, as depicted in figs. 1 and 2, described system specifically comprises again:
Two cover control boards: be arranged at described low end access level router internal system respectively, a cover is that the master uses control board, and another set of is standby control board;
The major function of control board comprises:
The router work clock is provided;
Be in charge of Ethernet interface and maintenance port;
Responsible docking port sticks into the line pipe reason.
Active and standby control device: link to each other with two cover control boards respectively, be used to control the active and standby relation of selecting two cover control boards; Promptly, be responsible for the control of primary, spare state, guarantee that primary, spare control board logic is normal by heartbeat signal;
Described active and standby control device can be independent of the control board setting, also can be built in the control board;
Described active and standby control device can determine that the high control board of priority is the main control board of using according to the priority of the control board that disposes, what priority was low then is standby control board, and described two cover control boards priority situation separately can be specified by the order line configuration; When the priority of two control boards was identical, then to finish the control board of startup earlier be main usefulness in order, and another set of control board then is standby;
Primary and backup control board moves simultaneously, but has only the output of master board effective, is in operating state, and another set of control board is in stand-by state; Under the situation that the master board circuit breaks down, then active and standby control device is responsible for standby control board is automatically converted to main with the main corresponding function with control board of state realization.
Data such as the configuration data of two cover control boards, routing table are carried out under the control of active and standby control device alternately by the communication link between the two cover control boards, keep synchronously.
System of the present invention also comprises two power modules of separation, is used for realizing the backup of power supply, and two power supply outputs also connect, and load is shared.
The situation that will be built in the master control borad with active and standby control device is an example below, and system of the present invention is described.As shown in Figure 2, be provided with watchdog circuit Watchdog among the figure as the active and standby control device of using, watchdog circuit links to each other with central processing unit, be used for judging the operating state of two cover control boards according to the heartbeat signal of control board, so that carry out active and standby switching, thereby realize logic control at primary, spare control board according to the corresponding work state.
Among the present invention, active and standby control device utilizes the heartbeat signal of heartbeat line transmission to detect the whether normally operation of the other side's software mutually.Two cover control boards must send one time heartbeat signal at least on the heartbeat line in maximum 1.6 seconds the time interval, if do not send heartbeat signal then mean that this equipment can not move in 1.6 seconds.
The activestandby state line is used to refer to the activestandby state of control board.Be in main MPC860T central processing unit signal on the activestandby state line is overturn once being expressed as the master, otherwise represent that it is standby with the State Control plate; Is to output to the Wide Area Network interface integrated circuit board behind the high-low level signal by active and standby control device (being watchdog circuit) with the signal transition on the activestandby state line, the Wide Area Network interface integrated circuit board identifies according to this signal and is in main control board with state, so that the Wide Area Network interface integrated circuit board is only accepted the control of master board, do not accept the control of control board fully.
In a word, adopting the effect of heartbeat signal among the present invention is to be used for representing whether this control board is in normal operating conditions; And adopt the activestandby state line to be used to refer to the activestandby state of control board, and output to the Wide Area Network interface integrated circuit board, to realize control to the Wide Area Network interface integrated circuit board.
In order to guarantee the high reliability of the bus transfer between control board and the wan interface cards, among the present invention, also provide the bus backup functionality, promptly each control board is provided with the bus that is communicated with wan interface cards.For example, as shown in Figure 4, two cover control boards all are connected on the different Wide Area Network interface draw-in groove positions through different buses, bus on the backboard has four groups: the bus between control board MPU1 and the Wide Area Network interface integrated circuit board WIC1, bus between control board MPU1 and the Wide Area Network interface integrated circuit board WIC2, bus between control board MPU2 and the Wide Area Network interface integrated circuit board WIC1, bus between control board MPU2 and the Wide Area Network interface integrated circuit board WIC2, these four groups of bus non-overlapping copies, be independent of each other, to guarantee when a wan interface cards or router unit are out of order, can not have influence on other card operate as normal of (comprising wan interface cards or control board).
In the system of the present invention, also be provided with two supply units, as shown in Figure 5, two supply unit POWER1 and POWER2 are provided with power line and switch separately respectively.The voltage of supply unit is divided into two kinds of 5V and 12V.The main 3.3V voltage that uses on control board MPU and Wide Area Network interface integrated circuit board WIC.The output voltage 5V of two supply units is connected in parallel through behind the Schottky diode in control board MPU and Wide Area Network interface integrated circuit board WIC plate, passing through LDO (low dropout voltage regulator) then carries out becoming 3.3V after the voltage adjustment, give other circuit then and use, the 5V power supply directly uses the 5V of LDO front.12V voltage also is to utilize two Schottky diodes and connect the back to use.
And, the power sense circuit of pair supply voltage is arranged on control board MPU integrated circuit board, can detect having or not of supply voltage, when the voltage no-output of a supply unit, alarm by software, and automatically switching to after the alarm on another supply unit.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (10)
1, a kind of method that realizes low end access level router backup is characterized in that, comprising:
A, two cover control boards are set in low end access level router, a cover is main to use control board, and another set of is standby control board;
Whether B, low end access level router regularly detect main normal with control board;
C, when detect main can't operate as normal with control board, the main function of finishing with control board switched on the standby control board realizes.
2, the method for realization low end access level router backup according to claim 1 is characterized in that, described steps A also comprises:
Low end access level router determines that according to the priority artificial or control board of configuration automatically the high control board of priority is that the master uses control board, and the control board that priority is low is standby control board.
3, the method for realization low end access level router backup according to claim 1 is characterized in that, described steps A also comprises:
A1, the main integrated circuit board that will determine with control board information notice and control board intercommunication.
4, the method for realization low end access level router backup according to claim 3 is characterized in that, described steps A 1 further comprises:
The main signal of determining that regularly changes to the integrated circuit board transmission with the control board intercommunication with control board, described integrated circuit board is identified as the main control board of using by the signal of this variation with the control corresponding plate.
According to the method for claim 1,2,3 or 4 described realization low end access level router backups, it is characterized in that 5, described step B comprises:
Low end access level router can detect it and whether be in normal operating conditions according to the heartbeat signal that primary, spare control board regularly sends, if detect the heartbeat signal that described control board sends, determine that then it is in normal operating conditions, otherwise, assert that it is not in normal operating conditions.
6, a kind of system that realizes low end access level router backup, it is characterized in that, form by two cover control boards and active and standby control device, two cover control boards link to each other with the integrated circuit board of its intercommunication respectively with in the low end access level router, also link to each other simultaneously with active and standby control device, and main by the cover conduct in the active and standby control device control two cover control boards with control board and described integrated circuit board intercommunication, respective plate is sticked into row control.
7, the system of realization low end access level router backup according to claim 6 is characterized in that, described active and standby control device is:
The employing watchdog circuit realizes, regularly detects the heartbeat signal that primary, spare control board sends by described watchdog circuit and determines whether it is in normal operating conditions, and described watchdog circuit can be built in the control board, also can be independent of the control board setting.
8, the system of realization low end access level router backup according to claim 6, it is characterized in that, described primary, spare control board also links to each other with integrated circuit board in the low end access level router by the activestandby state line, and described activestandby state line is used to transmit main signal with the control board transmission.
9, the system of realization low end access level router backup according to claim 6 is characterized in that, is respectively arranged with the connecting bus of intercommunication between described primary, spare control board and each integrated circuit board.
According to the system of claim 6,7,8 or 9 described realization low end access level router backups, it is characterized in that 10, this system also comprises:
Two supply units: be respectively arranged with separately power line and switch, and all link to each other with primary, spare control board respectively, one in two supply units is used to primary, spare control board to power, and another is used to provide protection;
Power detector: can be arranged on the control board, perhaps be independent of the control board setting, and described power detector links to each other with the output of two supply units respectively, whether be used to detect the supply unit that is in power supply state normal, and alarm when this supply unit is undesired, automatically switch to simultaneously by another means of power.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410083789 CN1764079A (en) | 2004-10-22 | 2004-10-22 | Method and system for realizing low end access level router backup |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410083789 CN1764079A (en) | 2004-10-22 | 2004-10-22 | Method and system for realizing low end access level router backup |
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| CN1764079A true CN1764079A (en) | 2006-04-26 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101114913B (en) * | 2007-08-28 | 2010-09-01 | 福建星网锐捷网络有限公司 | Modularized switch |
| CN101494564B (en) * | 2008-01-25 | 2011-12-07 | 中兴通讯股份有限公司 | Apparatus for monitoring power supply and method for implementing veneer thermal backup |
| CN101296064B (en) * | 2008-06-18 | 2011-12-21 | 杭州华三通信技术有限公司 | Bypass switching method, system and bypass equipment |
| CN104539444A (en) * | 2014-12-02 | 2015-04-22 | 重庆晴彩科技有限公司 | Detection module of network physical link for switching heartbeat signal |
| CN104601362A (en) * | 2014-12-02 | 2015-05-06 | 重庆晴彩科技有限公司 | Network physical link switching heartbeat signal detection method |
| CN104735047A (en) * | 2014-12-02 | 2015-06-24 | 重庆晴彩科技有限公司 | Intelligent mixed mode network physical link emergency switching system |
| CN104734879A (en) * | 2014-12-02 | 2015-06-24 | 重庆晴彩科技有限公司 | Emergency intelligent switching system for network physical link |
| CN106201981A (en) * | 2016-06-24 | 2016-12-07 | 北京临近空间飞艇技术开发有限公司 | A kind of near space ship borne computer multi-CPU system self-adapting reconstruction method |
-
2004
- 2004-10-22 CN CN 200410083789 patent/CN1764079A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101114913B (en) * | 2007-08-28 | 2010-09-01 | 福建星网锐捷网络有限公司 | Modularized switch |
| CN101494564B (en) * | 2008-01-25 | 2011-12-07 | 中兴通讯股份有限公司 | Apparatus for monitoring power supply and method for implementing veneer thermal backup |
| CN101296064B (en) * | 2008-06-18 | 2011-12-21 | 杭州华三通信技术有限公司 | Bypass switching method, system and bypass equipment |
| CN104539444A (en) * | 2014-12-02 | 2015-04-22 | 重庆晴彩科技有限公司 | Detection module of network physical link for switching heartbeat signal |
| CN104601362A (en) * | 2014-12-02 | 2015-05-06 | 重庆晴彩科技有限公司 | Network physical link switching heartbeat signal detection method |
| CN104735047A (en) * | 2014-12-02 | 2015-06-24 | 重庆晴彩科技有限公司 | Intelligent mixed mode network physical link emergency switching system |
| CN104734879A (en) * | 2014-12-02 | 2015-06-24 | 重庆晴彩科技有限公司 | Emergency intelligent switching system for network physical link |
| CN104734879B (en) * | 2014-12-02 | 2018-02-16 | 重庆晴彩科技有限公司 | A kind of network physical link is met an urgent need intelligent switching system |
| CN104735047B (en) * | 2014-12-02 | 2018-04-27 | 重庆晴彩科技有限公司 | A kind of hybrid-mode network physical link is met an urgent need intelligent switching system |
| CN106201981A (en) * | 2016-06-24 | 2016-12-07 | 北京临近空间飞艇技术开发有限公司 | A kind of near space ship borne computer multi-CPU system self-adapting reconstruction method |
| CN106201981B (en) * | 2016-06-24 | 2018-12-28 | 北京临近空间飞艇技术开发有限公司 | A kind of near space ship load computer multi-CPU system self-adapting reconstruction method |
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