CN106789618B - Standby system and its method based on virtual router backup protocol - Google Patents
Standby system and its method based on virtual router backup protocol Download PDFInfo
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- CN106789618B CN106789618B CN201510815283.XA CN201510815283A CN106789618B CN 106789618 B CN106789618 B CN 106789618B CN 201510815283 A CN201510815283 A CN 201510815283A CN 106789618 B CN106789618 B CN 106789618B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/58—Association of routers
- H04L45/586—Association of routers of virtual routers
Abstract
The present invention discloses a kind of standby system and its method based on virtual router backup protocol, by the way that active router and backup router are selected in each router in advance, the active router and backup router include weighted value and Virtual Local Area Network (the Virtual LAN with identical routed path, VLAN), and one of them is selected to represent in Virtual Local Area Network as communication, make the communication of active router represent lasting transmission notice package to represent to the communication of backup router, and continue transfer address analytic protocol table to backup router, when the communication of backup router representative does not receive notice package, it is judged as all Virtual Local Area Network exceptions of active router and replaces active router, to reach the technical effect for promoting the quantity available of backup switching efficiency and Virtual Local Area Network.
Description
Technical field
The present invention relates to a kind of standby system and its method, especially by the Transmission Time Interval for reducing notice package and
It is transmitted to a kind of standby system and its method based on virtual router backup protocol of the number of Virtual Local Area Network.
Background technique
In recent years, requirement of the Industry Control for network stabilization is increasingly stringent, in actual implementation, it will usually arrange in pairs or groups standby
Part mechanism is to realize network stabilization and reliability.
In general, router can run virtual router backup protocol (Virtual in order to keep network stabilization reliable
Router Redundancy Protocol, VRRP), multiple routers are considered as a virtual router, and on these roads
By selecting one in device as active router, remaining is then used as backup router.In this way, when active router exception, i.e.,
Active router can be substituted by by backup router.Wherein, detecting active router whether Yi Chang mode, be traditionally by main road by
Device persistently transmits notice package to backup router, judges that active router is different when backup router does not receive notice package
Often, however, this process needs to expend relatively great amount of time (by taking the preset value of VRRP as an example, handoff procedure is at least needed 3 seconds),
Therefore the problem bad with backup switching efficiency.
In view of this, Bian You manufacturer proposes the time interval by shortening transmission notice package to promote backup switching effect
Rate.However, since this mode sends each Virtual Local Area Network to there is still a need for will notice package, thus be based on bandwidth and
Time considers, and the quantity of available Virtual Local Area Network is limited, and therefore, still deposits after promoting backup switching efficiency
In the problem that the quantity available of Virtual Local Area Network is limited.
In summary, it is known that always exist that backup switching efficiency is bad and Virtual Local Area Network for a long time in the prior art
The limited problem of quantity available, therefore it is really necessary to propose improved technological means, come solve the problems, such as this one.
Summary of the invention
The invention discloses a kind of standby system and its method based on virtual router backup protocol.
Firstly, the invention discloses a kind of standby systems based on virtual router backup protocol, using road in a network
By device, this system includes: initial module, selecting module, transmission module and backup module.Wherein, initial module in advance from
Active router and backup router are selected in the router, wherein active router and backup router include weighted value and tool
There is the Virtual Local Area Network of identical routed path；Selecting module is to respectively from active router and the virtual local area of backup router
One of them is selected to represent in network as corresponding link up；Transmission module is represent the communication for the active router being selected
The communication for persistently transmitting notice package to backup router with first time interval represents, and is persistently passed with the second time interval
Send address analysis protocol table to backup router；And backup module is to when the communication of backup router representative is not in third
Between interval when receiving the notice package from active router, be judged as that all Virtual Local Area Networks of active router are abnormal, and
It selects one of them again from the backup router according to weighted value and replaces active router.
In addition, the invention discloses a kind of backup methods based on virtual router backup protocol, using road in a network
By device, step includes: to select active router and backup router from the router in advance, wherein active router and standby
Part router includes weighted value and the Virtual Local Area Network with identical routed path；Respectively from active router and backup router
Virtual Local Area Network in select one of them to link up representative as corresponding；The communication of the active router being selected is represented with the
The communication of one time interval spans transmission notice package to backup router represents, and persistently transmits ground with the second time interval
Location analytic protocol table is to backup router；When backup router communication represent not third time interval receive from main road by
When the notice package of device, it is judged as that all Virtual Local Area Networks of active router are abnormal, and according to weighted value from the backup
Again one of them is selected in router replaces active router.
Disclosed herein System and method for it is as above, be that the present invention is by advance each with the difference of the prior art
Active router and backup router are selected in router, the active router and backup router include weighted value and have identical
The Virtual Local Area Network of routed path, and select in Virtual Local Area Network one of them as representative is linked up, make main road by
The communication that the communication of device represents lasting transmission notice package to backup router represents, and continues transfer address analytic protocol table
It is judged as all void of active router when the communication of backup router representative does not receive notice package to backup router
Quasi- local area network exception simultaneously replaces active router.
By above-mentioned technological means, the present invention, which can reach, promotes can be used for backup switching efficiency and Virtual Local Area Network
The technical effect of quantity.
Detailed description of the invention
Fig. 1 is that the present invention is based on the system block diagrams of the standby system of virtual router backup protocol.
Fig. 2 is that the present invention is based on the method flow diagrams of the backup method of virtual router backup protocol.
Fig. 3 is that the present invention is based on the method flow diagrams of another embodiment of the backup method of virtual router backup protocol.
Fig. 4 is using router of the invention as virtual router and its schematic diagram of backup.
Fig. 5 is the schematic diagram using present invention transmission notice package and address analysis protocol table.
Fig. 6 is using the present invention in the schematic diagram of linear network.
[symbol description]
10 loop networks
20 linear networks
100 routers
100a, 100b router
110 initial modules
120 selecting modules
130 transmission modules
140 backup modules
150 exchangers
310 virtual routers
410 active routers
420 backup routers
Specific embodiment
Carry out the embodiment that the present invention will be described in detail below in conjunction with schema and embodiment, how the present invention is applied whereby
Technological means solves technical problem and reaches the realization process of technical effect to fully understand and implement.
Illustrate disclosed herein standby system based on virtual router backup protocol and its method before, it is first right
Environment applied by the present invention explains, and the router of present invention application in a network, the network does not limit any type,
As long as the Virtual Local Area Network setting on the connectivity port of router is consistent, either loop network or linear network etc. all may be used
It is applicable in the present invention.In actual implementation, these routers can be collectively regarded as a virtual router, and use a virtual IP address
As the routing IP of offer service, in addition, these routers same time, which only has one, is used as main (Master) router,
Remaining router is then as backup (Backup) router, and when primary router failure, one of backup router can replace
Active router, to continue offer service, and this mechanism is realized by virtual router backup protocol.It remarks additionally
, the loop network be also connected to tool redundant processing capabilities chain-shaped network, the chain-shaped network include head end exchange
Device and tail end exchanger, wherein head end exchanger is connect by head end connectivity port with the loop network；Tail end exchanger is logical
Tail end connectivity port is crossed to connect with the loop network.
Cooperation schema is to the present invention is based on the standby systems of virtual router backup protocol and its method to do further below
Illustrate, please referring initially to " Fig. 1 ", " Fig. 1 " be the present invention is based on the system block diagrams of the standby system of virtual router backup protocol,
It is applied in the network environment (such as: loop network 10) with multiple routers 100, this system includes: initial module 110,
Selecting module 120, transmission module 130 and backup module 140.Wherein, initial module 110 is in advance from the router 100
In select active router and backup router, the active router and backup router include weighted value and have an identical routing
The Virtual Local Area Network in path.Assuming that there is two routers 100, the weighted value that first router 100 includes be " 100 " and
With multiple same paths Virtual Local Area Networks, such as: VLAN name is respectively " V1 ", " V2 " and " V3 "；Second routing
The weighted value that device 100 includes is " 254 " and equally has multiple same paths Virtual Local Area Networks, and such as: VLAN name is same
Respectively " V1 ", " V2 " and " V3 " etc..At this point, initial module 110 can be according to the size of the weighted value of each router 100 at this
Active router and backup router are selected in a little routers 100, such as: by second big router 100 of weighted value as master
Router, and it regard first small router 100 of weighted value as backup router.It to be remarked additionally, loop network
It also may include the network communication apparatus such as exchanger 150 other than router 100 in 10.
Selecting module 120 is to one of selection from the Virtual Local Area Network of active router and the backup router
It is represented as corresponding link up.In actual implementation, the mode for being selected as the Virtual Local Area Network that communication represents can be by pre-
The mode first set is realized.For the above example, first Virtual Local Area Network (such as: VLAN name be " V1 ") can be preset
Represented to link up, to represent all Virtual Local Area Networks on this router, such as: VLAN name be " V2 ", VLAN name for "
V3 " etc., this is because all Virtual Local Area Networks have identical routed path, when one of Virtual Local Area Network is abnormal
When, while it is abnormal also to represent all Virtual Local Area Networks.In this way, the communication of active router represent as VLAN name as "
The Virtual Local Area Network of V1 "；The communication of backup router represents the Virtual Local Area Network for being also VLAN name as " V1 ".Wherein,
The communication representative of active router can be considered " main (Master) ", and the communication of all backup routers representative can be considered " backup
(Backup)」。
Transmission module 130 persistently transmits (example represent the communication for the active router being selected with first time interval
Such as: every 25 milliseconds of transmission are primary) the communication representative of package (Advertisement packet) to the backup router is noticed,
And persistently transmitted with the second time interval (such as: transmission in every 10 seconds is primary) address resolution protocol (Address
Resolution Protocol, ARP) table is to the backup router.Lead to since the unified communication by active router represents transmission
Package is accused to backup router, the quantity of tradition transmission notice package can be effectively reduced (traditionally, when there are numerous virtual offices
When the network of domain, the Virtual Local Area Network of each backup will receive the notice package of active router transmission).In addition, due to master
Router continues transfer address analytic protocol table to backup router, and single router 100 can be used to help other routings
Device 100 establishes routing table, helps to save time and its occupied network bandwidth of process for establishing routing table.
Backup module 140 to when the backup router communication represent not third time interval (such as: every 75
Millisecond) when receiving the notice package from active router, that is, it is judged as that all Virtual Local Area Networks of active router are abnormal, and
It selects one of them again from the backup router according to weighted value and replaces active router, for example, based on judgement
When all Virtual Local Area Network exceptions of router, select weighted value the maximum as new main road in the backup router
By device and replace the active router of script.In actual implementation, the third time interval can be set as the first time interval
Integral multiple, in addition, the communications representative when backup router in third time interval receives the notice package from active router
When, selecting module 120 can also selected according to the setup parameter of this notice package again, and another communication represents or maintenance use is worked as
Preceding communication represents.As an example it is assumed that setup parameter can represent for numerical value " 1 " need to select another communication representative again；Setting
Parameter can represent for numerical value " 0 " to be maintained to represent using current communication.
Then, " Fig. 2 " is please referred to, " Fig. 2 " is that the present invention is based on the methods of the backup method of virtual router backup protocol
Flow chart is applied in the network environment (such as: loop network 10) with multiple routers 100, step include: in advance from
Active router and backup router are selected in the router 100, wherein active router and the backup router include power
Weight values and Virtual Local Area Network (step 210) with identical routed path；Respectively from the void of active router and backup router
One of them is selected to represent (step 220) as corresponding link up in quasi- local area network；The ditch unifier for the active router being selected
The communication that table persistently transmits notice package to the backup router with first time interval represents, and with the second time interval
Continue transfer address analytic protocol table to the backup router (step 230)；When the communication of the backup router represents not
When third time interval receives the notice package from active router, it is judged as that all Virtual Local Area Networks of active router are different
Often, and according to weighted value one of them is selected again from the backup router to replace active router (step 240).It is logical
Cross above-mentioned steps, can by selecting active router and backup router in each router 100 in advance, the active router and
Backup router includes weighted value and the Virtual Local Area Network with identical routed path, and is selected in Virtual Local Area Network
One of them makes the communication of active router represent the lasting ditch unifier for transmitting and noticing package to backup router as communication representative
Table, and continue transfer address analytic protocol table to backup router, when the communication representative of backup router does not receive notice envelope
Bao Shi is judged as all Virtual Local Area Network exceptions of active router and replaces active router.Especially it is noted that in reality
On border is implemented, step 210 and step 220 have no certain sequencing, stated differently, since setting on the connectivity port of router
Unanimously (Virtual Local Area Network with identical routed path), therefore also can first be selected in each router respectively one of empty
Quasi- local area network selects active router and backup router after representing as corresponding communication again.
In addition, please referring to " Fig. 3 ", " Fig. 3 " is that the present invention is based on the another of the backup method of virtual router backup protocol
The method flow diagram of embodiment, similar with the method flow of above-mentioned " Fig. 2 ", difference is only that after step 230, when
The communication of the backup router is represented when third time interval receives the notice package from active router, can be according to notice
The setup parameter selection of package selects another link up again and represents or maintain to represent (step 250) using the communication of script.Citing
For, it is assumed that setup parameter is " T；2 ", wherein " T " can be represented need to select another communication representative again；" 2 " can be represented second
A Virtual Local Area Network is set as linking up and represent.It maintains to represent using current communication assuming that setup parameter can then represent for " F ".
Cooperation " Fig. 4 " to " Fig. 6 " carries out as described below by way of examples below, is please referring initially to " Fig. 4 ", " Fig. 4 "
Using router of the invention as virtual router and its schematic diagram of backup.In this instance, it is deposited simultaneously in loop network 10
Router (100a, 100b) and multiple exchangers 150 of the invention are applied at two.Wherein, this two router (100a,
100b) other than itself respectively there is corresponding entity IP, it can be also collectively treated as a virtual router 310, and have
Corresponding virtual IP address.For exchanger 150, only need to learn virtual IP address can with the mutually communication of virtual router 310 and
It is not required to learn the entity IP of router (100a, 100b).In actual implementation, it can be realized by virtual router agreement virtual
The basic setup of router 310, such as: the setting of weighted value and Virtual Local Area Network, also can this two router (100a,
Active router and backup router are selected in 100b), such as: router 100a is as active router, router 100b as standby
Part router.Mode due to selecting active router and backup router be based on virtual router agreement, therefore it is no longer more herein
It repeats.
Next, after active router and backup router are selected, by from the Virtual Local Area Network of active router (such as:
VLAN V1, V2, V3 ...) in select communication representative of the one as active router, and in the virtual local area of backup router
One is selected to represent in network (such as: VLAN V1, V2, V3 ...) as the communication of backup router.Then, the master being selected
The communication representative conference of router is with first time interval, such as: every 25 milliseconds, send a notice package to backup router with
Inform that its state is normal, and with the second time interval, such as: every 10 seconds, sending address analysis protocol table (ARP Table)
To backup router, so as to when backup router replaces active router, save its re-establish address analysis protocol table when
Between.
From the above, when the communication representative of backup router does not receive the notice from active router in third time interval
When package, indicate that the communication representative of active router can not normally transmit notice package, therefore be judged as abnormal, due to main road by
All Virtual Local Area Networks of device are all identical routed path, also illustrate that active router when the communication of active router represents exception
All Virtual Local Area Networks are abnormal, therefore, will select again one of them from the backup router according to weighted value to take
For active router, such as: router 100b replaces router 100a as active router.Especially it is noted that regardless of virtual
Which router (100a, 100b) is used as active router in router 310, is all considered as the same road for exchanger 150
By device so being no difference.
If " Fig. 5 " illustrates, " Fig. 5 " is the schematic diagram using present invention transmission notice package and address analysis protocol table.
Specifically, using the router of virtual router agreement using router and tradition of the invention, difference between the two exists
The parts such as package and transfer address analytic protocol table are noticed in transmission.If " Fig. 5 " illustrates, active router 410 and route stand-by
The transmission notice package of device 420 is no longer transmitted to each Virtual Local Area Network (such as: VLAN V1, V2, V3 ...), but only with the
One time interval spans transmission, one notice package represents one of them of these Virtual Local Area Networks into backup router 420
Virtual Local Area Network (that is: is linked up and is represented), reduces the quantity of transmission notice package, and by this mode in order to make route stand-by
Device 420 can rapidly be replaced after 410 exception of active router, therefore first time interval was adjusted to every 25 by every 1 second
The primary notice package of millisecond transmission.Then, it after replacing active router 410 in order to avoid backup router 420, needs to expend a large amount of
Time relearns to establish address analysis protocol table, and therefore, active router 410 can also be with the second time interval, such as: every 10
Second, the address analysis protocol table of an active router 410 is transmitted to backup router 420.It is detectd in this way, which shortening can be realized
Measure active router 410 failure time, replace active router 410 after system recovery time and improve support virtual office
The quantity of domain network.
" Fig. 6 " is please referred to, " Fig. 6 " is using the present invention in the schematic diagram of linear network.As long as it is previously noted that router
Virtual Local Area Network setting on 100 connectivity port is consistent, either loop network or linear network etc. all applicable
Invention.Therefore, in actual implementation, other than applying in the loop network 10 anticipated as shown in Fig. 1, it also can be applicable to " figure
6 " the linear networks 20 illustrated.Wherein, linear network 20 can be by least two routers 100 and exchanger in varying numbers
150 are formed.Especially it is noted that layer three switch device (Layer 3 also can be used in router of the present invention 100
Switch) replace, intermediate exchanger 150 is then second layer exchanger (2 Switch of Layer).
In summary, it is known that the difference between the present invention and the prior art is by selecting master in each router in advance
Router and backup router, the active router and backup router are comprising weighted value and with the virtual of identical routed path
Local area network, and select one of them as representative is linked up in Virtual Local Area Network, it represents the communication of active router and holds
The communication for sending notice package to backup router is resumed to represent, and persistently transfer address analytic protocol table to backup router,
When the communication of backup router representative does not receive notice package, that is, it is judged as that all Virtual Local Area Networks of active router are abnormal
And replace active router, it can solve the problems of prior art by this technological means, and then reach promotion backup
The technical effect of the quantity available of switching efficiency and Virtual Local Area Network.
Although the present invention is disclosed above with embodiment above-mentioned, however, it is not to limit the invention, any this field skill
Art personnel, without departing from the spirit and scope of the present invention, when can make some changes and embellishment, therefore patent of the invention is protected
Shield range must regard subject to the institute of claim appended by this specification defender.
Claims (8)
1. a kind of standby system based on virtual router backup protocol, is applied in the network environment with multiple routers,
It is characterized in that, the system includes:
One initial module, an active router and an at least backup router are selected from the router in advance, wherein
The active router and the backup router include a weighted value and at least Virtual Local Area Network with identical routed path；
One selecting module, to selected from the Virtual Local Area Network of the active router and the backup router wherein it
One represents as a corresponding communication；
One transmission module persistently transmits one represent the communication for the active router being selected with a first time interval
The communication for noticing package to the backup router represents, and persistently transmits address resolution association with one second time interval
Table is discussed to the backup router；And
One backup module is not received in a third time interval from the master to the communication representative when the backup router
When the notice package of router, it is judged as that all Virtual Local Area Networks of the active router are abnormal, and according to the weighted value
It selects one of them again from the backup router and replaces the active router, which includes to work as the route stand-by
The communication of device is represented when the third time interval receives the notice package from the active router, makes the selecting module root
Another communication is selected again according to a setup parameter of the notice package to represent or maintain to represent using the communication.
2. the standby system according to claim 1 based on virtual router backup protocol, which is characterized in that between the first time
Every being preset as 25 milliseconds, which is preset as 10 seconds, which is preset as the first time interval
Integral multiple.
3. the standby system according to claim 1 based on virtual router backup protocol, which is characterized in that select the main road by
Device and the backup router are the sizes according to the weighted value, and the big router of the weighted value is as the active router, the power
The small router of weight values is as the backup router.
4. the standby system according to claim 1 based on virtual router backup protocol, which is characterized in that when being judged as the master
When all Virtual Local Area Network exceptions of router, the weighted value the maximum is selected to replace the main road in the backup router
By device.
5. a kind of backup method based on virtual router backup protocol, is applied in the network environment with multiple routers,
It is characterized in that, step includes:
An active router and an at least backup router are selected from the router in advance, wherein the active router and described
Backup router includes a weighted value and at least Virtual Local Area Network with identical routed path；
Select one of them as corresponding from the Virtual Local Area Network of the active router and the backup router respectively
One link up represent；
The communication of the active router being selected, which is represented, persistently transmits a notice package to described standby with a first time interval
The communication of part router represents, and persistently transmits an address analysis protocol table to the backup road with one second time interval
By device；
When the communication representative of the backup router does not receive the notice from the active router in a third time interval
When package, it is judged as that all Virtual Local Area Networks of the active router are abnormal, and according to the weighted value from the route stand-by
Again one of them is selected in device replaces the active router；And
The envelope of the notice from the active router is received in the third time interval when the communication of the backup router is represented
Bao Shi selects another communication representative according to the selection of a setup parameter of the notice package again or maintenance uses the communication to represent
Step.
6. the backup method according to claim 5 based on virtual router backup protocol, which is characterized in that between the first time
Every being preset as 25 milliseconds, which is preset as 10 seconds, which is preset as the first time interval
Integral multiple.
7. the backup method according to claim 5 based on virtual router backup protocol, which is characterized in that select the main road by
Device and the backup router are the sizes according to the weighted value, and the big router of the weighted value is as the active router, the power
The small router of weight values is as the backup router.
8. the backup method according to claim 5 based on virtual router backup protocol, which is characterized in that when being judged as the master
When all Virtual Local Area Network exceptions of router, the weighted value the maximum is selected to replace the main road in the backup router
By device.
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| CN201510815283.XA CN106789618B (en) | 2015-11-23 | 2015-11-23 | Standby system and its method based on virtual router backup protocol |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101252427A (en) * | 2008-02-29 | 2008-08-27 | 中兴通讯股份有限公司 | Switch method of main-standby routers connecting with main-standby interfaces of medium gateways |
| CN102711234A (en) * | 2012-05-22 | 2012-10-03 | 中兴通讯股份有限公司 | Method for synchronizing ARP (address resolution protocol) tables between master and slave VRRP (virtual router redundancy protocol) devices and VRRP device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101252427A (en) * | 2008-02-29 | 2008-08-27 | 中兴通讯股份有限公司 | Switch method of main-standby routers connecting with main-standby interfaces of medium gateways |
| CN102711234A (en) * | 2012-05-22 | 2012-10-03 | 中兴通讯股份有限公司 | Method for synchronizing ARP (address resolution protocol) tables between master and slave VRRP (virtual router redundancy protocol) devices and VRRP device |
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