CN106100987B - A kind of active router based on VRRP agreement switches the method and device of secondary router - Google Patents
A kind of active router based on VRRP agreement switches the method and device of secondary router Download PDFInfo
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- CN106100987B CN106100987B CN201610645657.2A CN201610645657A CN106100987B CN 106100987 B CN106100987 B CN 106100987B CN 201610645657 A CN201610645657 A CN 201610645657A CN 106100987 B CN106100987 B CN 106100987B
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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
- H04L45/302—Route determination based on requested QoS
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- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The application provides a kind of method and device of secondary router of active router switching based on VRRP agreement, the described method includes: as Master router the first router execute user input be switched to the order of Backup router after, all Backup routers into the VRRP backup group send the notification packet that the priority carried is 0, and being based on priority to trigger other Backup routers in the VRRP backup group re-elects Master router.Judge whether to receive the notification packet that other Backup routers are responded in the VRRP backup group.If receiving the notification packet for carrying other Backup router own priorities that other Backup routers return, the virtual ip address for the VRRP backup group being locally pre-configured is deleted, Backup router is switched to.In the embodiment of the present application, Master router is switched to the configuration that Backup router no longer needs to modify VRRP backup group or VRRP monitored item, becomes more convenient.
Description
Technical field
This application involves field of communication technology, in particular to a kind of active router based on VRRP agreement switches secondary router
Method and device.
Background technique
VRRP (Virtual Router Redundancy Protocol, Virtual Router Redundacy Protocol) is by IETF (The
Internet Engineering Task Force, Internet engineering task force) propose solution local area network in configure it is quiet
There is the Routing Protocol of single point failure phenomenon in state gateway.VRRP is widely used in edge network, its design object is to support
IP traffic amount, which unsuccessfully shifts, under specific condition will not cause confusion, allow host to use single-router, and jump practical first
Router uses the connectivity between still being able to maintenance router in the case of failure.VRRP draws the set of router in local area network
It is grouped together, referred to as a backup group.Backup group is made of a Master router and multiple Backup routers, functionally
It is equivalent to a virtual router.
Master router is the router of the highest priority elected in VRRP backup group by priority, the routing
Device undertakes the function of active router in backup group, the message forwarding being responsible under the backup group.Backup router is VRRP backup
Router in group other than Master router becomes for taking over Master router in Master router failure
The active router of backup group.
Administrator may need to upgrade current Master router or Backup is examined to route in network management
At this moment current Master router is become Backup router by the operating status of device.In the prior art, Master is realized
The method that router becomes Backup router need to modify VRRP configuration, influence practical networking, realize that process is complex.
Summary of the invention
In view of this, the application provides the method and dress of a kind of secondary router of active router switching based on VRRP agreement
It sets, becomes the mistake of Backup router to solve prior art Master router in the backup group for realizing virtual router
The excessively complicated problem of journey.
Specifically, the application is achieved by the following technical solution:
A method of the active router based on VRRP agreement switches secondary router, applied to the routing in VRRP backup group
Device, comprising:
After what the first router execution user as Master router inputted is switched to the order of Backup router,
All Backup routers into the VRRP backup group send the notification packet that the priority carried is 0, described in triggering
Other Backup routers are based on priority and re-elect Master router in VRRP backup group；
Judge whether to receive the notification packet that other Backup routers are responded in the VRRP backup group；
If it is preferential to receive carrying other Backup routers itself that other Backup routers return
The notification packet of grade deletes the virtual ip address for the VRRP backup group being locally pre-configured, is switched to Backup router.
In the method that the active router based on VRRP agreement switches secondary router, further includes:
If being not received by the notification packet that other Backup routers return, the priority for retransmitting carrying is 0
Notification packet, and after number of retransmissions reaches preset times, if not receiving what other Backup routers returned yet
Notification packet then stops the order that Backup router is switched to described in response.
In the method that the active router based on VRRP agreement switches secondary router, further includes:
The first router for being switched to Backup router receives the Master router re-elected out and sends
Carrying priority be 0 notification packet after, be not responding to the notification packet in preset Master exception time-out time.
In the method that the active router based on VRRP agreement switches secondary router, further includes:
In the preset Master exception time-out time, the Master router hair re-elected out is not received yet
The notification packet sent, it is determined that self-recovery is the road Master by the Master router operation irregularity re-elected out
By device.
In the method that the active router based on VRRP agreement switches secondary router, further includes:
The order for being switched to Backup router is restarted in the first router for being switched to Backup router
After fail；
The first router for being switched to Backup router executes the cancellation that user inputs and is switched to Backup routing
After the order of device, the command expiration for being switched to Backup router.
In the method that the active router based on VRRP agreement switches secondary router, what the deletion was locally pre-configured
The virtual ip address of the VRRP backup group, further includes:
The delay time for deleting virtual address is set, and described in deleting after reaching the delay time and being locally pre-configured
The virtual ip address of VRRP backup group.
A kind of active router based on VRRP agreement switches the device of secondary router, applied to the routing in VRRP backup group
Device, comprising:
Transmission unit is switched to the road Backup for the first router execution user's input as Master router
After the order of device, all Backup routers in Xiang Suoshu VRRP backup group send the notice report that the priority carried is 0
Text is based on priority to trigger in the VRRP backup group other Backup routers and re-elects Master router；
Judging unit, for judging whether to receive the notice that other Backup routers are responded in the VRRP backup group
Message；
Unit is deleted, if the carrying other roads Backup returned for receiving other Backup routers
By the notification packet of device own priority, the virtual ip address for the VRRP backup group being locally pre-configured is deleted, is switched to
Backup router.
In the device that the active router based on VRRP agreement switches secondary router, the transmission unit is further used
In:
If being not received by the notification packet that other Backup routers return, the priority for retransmitting carrying is 0
Notification packet, and after number of retransmissions reaches preset times, if not receiving what other Backup routers returned yet
Notification packet then stops the order that Backup router is switched to described in response.
In the device that the active router based on VRRP agreement switches secondary router, the judging unit is further used
In:
The first router for being switched to Backup router receives the Master router re-elected out and sends
Carrying priority be 0 notification packet after, be not responding to the notification packet in preset Master exception time-out time.
In the device that the active router based on VRRP agreement switches secondary router, the transmission unit is further used
In:
In the preset Master exception time-out time, the Master router hair re-elected out is not received yet
The notification packet sent, it is determined that self-recovery is the road Master by the Master router operation irregularity re-elected out
By device.
It is described to be switched to Backup routing in the device that the active router based on VRRP agreement switches secondary router
The order of device further include:
The order for being switched to Backup router is restarted in the first router for being switched to Backup router
After fail；
The first router for being switched to Backup router executes the cancellation that user inputs and is switched to Backup routing
After the order of device, the command expiration for being switched to Backup router.
In the device that the active router based on VRRP agreement switches secondary router, the deletion unit is further used
In:
The delay time for deleting virtual address is set, and described in deleting after reaching the delay time and being locally pre-configured
The virtual ip address of VRRP backup group.
In the embodiment of the present application, when network administrator needs current Master router pressure being switched to the road Backup
When by device, one can be inputted for Master router to be switched to the order of Backup router, Master router is held
After capable this is switched to the order of Backup router, one can be sent to all Backup routers in VRRP backup group and taken
The notification packet that the priority of band is 0, according to priority size re-elects the other Backup routers for enabling in backup group
Master router, to need to upgrade current Master router in network administrator or Backup is examined to route
The operating status of device, during current Master router pressure is switched to Backup router, it is no longer necessary to modify
VRRP configuration, simplifies realization process.
Detailed description of the invention
Fig. 1 is a network architecture diagram of the virtual router based on VRRP agreement；
Fig. 2 is a kind of process of the method for secondary router of active router switching based on VRRP agreement shown in the application
Figure；
Fig. 3 is a kind of logical box of the device of secondary router of active router switching based on VRRP agreement shown in the application
Figure；
Fig. 4 is a kind of hardware knot of the device of secondary router of active router switching based on VRRP agreement shown in the application
Composition.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution in the embodiment of the present application, and keep the application real
The above objects, features, and advantages for applying example can be more obvious and easy to understand, with reference to the accompanying drawing to prior art and the application
Technical solution in embodiment is described in further detail.
Referring to Fig. 1, for a network architecture diagram of the virtual router based on VRRP agreement, as shown, the first via by
Device, the second router, third router together constitute a backup group, form a virtual router.Master in local area network
Machine 1, host 2 and host 3 realize the communication with external network by virtual router.
Specifically, the set of router that can undertake gateway function is added in the backup group of VRRP by VRRP, formed
One virtual router.Identical, writing from memory using virtual router as next-hop is all arranged in the All hosts of same local area network
Recognize routing.The message that host is sent to other network segments will be sent to virtual router by default route, then be carried out by virtual router
Forwarding, to realize the communication of host and external network.VRRP elects a Master router, is held by Master router
Carry on a shoulder pole actual forwarding task.When Master router occurs abnormal, Backup router passes through timeout mechanism and election mechanism
Elect new Master router.
Master router can be elected according to the height of VRRP priority in VRRP backup group, highest priority becomes
Master router, the range for the priority that user can configure are 1 to 254.If there are IP address and virtual flow-line in backup group
The identical router of the interface IP address of device, then the router is referred to as the owner of IP address, possesses highest priority 255.
Priority is that the Master router where 0 expression IP is actively switched to Backup router.
Under VRRP contention mode, as long as there is the priority of Backup router to be higher than Master router in backup group,
The Backup router will replace existing Master router to become new Master router.
Under VRRP non-preemption mode, as long as Master router is working properly in backup group, even if there are the roads Backup
It is higher than the priority of Master router by the priority of device, which can not replace existing Master to route
Device becomes new Master router.
In practical applications, network administrator may need that current Master router is upgraded or examined
The operating status of Backup router needs current Master router being switched to Backup router at this time.
Existing technology can allow the priority of Backup router to be higher than the excellent of Master router under contention mode
First grade, so that Backup router replaces existing Master router to become new router, to realize existing
Master router becomes the conversion of Backup router.
On the one hand, the priority that existing Master router can be reduced, when the priority of existing Master router is low
In backup group when the priority of the Backup router of highest priority, which can replace existing Master
Router makes existing Master router be switched to Backup router.
On the other hand, the priority that any Backup router in backup group can be improved, when the Backup router
When priority is higher than the priority of existing Master router, which can replace existing Master router,
Existing Master router is set to be switched to Backup router.
This method needs to configure backup group in contention mode, will affect practical networking.Another side of the prior art
Method is to increase or modify the monitored item of backup group, allows existing Master router actively to reduce priority to 0, triggers Backup
Router, which re-elects, generates new Master router, and existing Master router becomes Backup router.In monitored item
In the case where not restoring, existing Master router can not be switched to Master router after becoming Backup router again, such as
The Master router operation irregularity of fruit hereafter, and taken over as Master router, virtually without other Backup routers
Router will be unable to be forwarded work.
In conclusion existing technical solution is needing current Master router being switched to Backup router
When, it realizes that the method that Master router is switched to Backup router need to modify VRRP configuration, influences practical networking；Either
By realizing that process is more multiple not restoring to realize that Master router is switched to Backup router with regard to the monitored item of continuous action
It is miscellaneous.
In view of this, the application provides the method and dress of a kind of secondary router of active router switching based on VRRP agreement
It sets, for solving the problems, such as that it is excessively complicated to become realizing for Backup router for Master router in the prior art.
Referring to fig. 2, switch the method for secondary router for a kind of active router based on VRRP agreement shown in the application
Flow chart.
Step 201: what the first router execution user as Master router inputted is switched to Backup router
Order after, all Backup routers in Xiang Suoshu VRRP backup group send the notification packet that the priority carried is 0, with
It triggers in the VRRP backup group other Backup routers and is based on priority and re-elect Master router.
Step 202: judging whether to receive the notification packet that other Backup routers are responded in the VRRP backup group.
Step 203: if receiving carrying other Backup routers that other Backup routers return
The notification packet of own priority deletes the virtual ip address for the VRRP backup group being locally pre-configured, is switched to Backup
Router.
As previously mentioned, in the prior art, Master router change Backup router need to be modified configuration, influence practical group
Net, or because Backup router impacted caused by changing monitored item can not become Master router, realization process complexity again.
In the present embodiment, the road Backup is switched to as the first router execution user's input of Master router
After the order of device, it is all into backup group which can send the notification packet that the priority of carrying is 0
Backup router re-elects Master router to trigger Backup router based on priority.The first router exists
After the notification packet for receiving the response of Backup router, local virtual ip address is deleted, Backup router is switched to.It is whole
A process does not need the configuration of change VRRP, without the monitored item for increasing or modifying VRRP backup group, realizes Master routing
The process that device is switched to Backup router becomes very convenient.
Illustrate the technical solution of the embodiment of the present application in conjunction with the network architecture of Fig. 1, sets the priority of the first router
It is 100, the priority of the second router is 80, and the priority of third router is 60.Master in current VRRP backup group
Router is the first router.
In this example, the Backup that is switched to that the first router as Master router receives user's input is routed
After the order of device, the order for being switched to Backup router is executed.The first router is all into VRRP backup group
Backup router sends the notification packet that the priority carried is 0.Backup router in VRRP backup group, i.e. the second tunnel
Itself is based on after receiving the notification packet that the priority of carrying of the first router transmission is 0 by device and third router
Priority carry out Master router election.
According to VRRP agreement, the Master router in VRRP backup group regularly sends notice according to notification time for interval
Message, Backup router oneself work in informing VRRP backup group.It is local that notification packet can carry Master router
Priority.The notification time can be set according to practical application, be traditionally arranged to be 1 second.
Under normal circumstances, after Backup router receives the notification packet that Master router is sent, Master is set
Abnormal time-out time receives notification packet in above-mentioned Master exception time-out time, then when extremely overtime to above-mentioned Master
Between reclocking；It is above-mentioned if not receiving the notification packet of Master router in above-mentioned Master exception time-out time
Master exception time-out time time-out, it oneself is Master router that Backup router, which is assert, its into VRRP backup group
Its Backup router sends notification packet.The calculation of above-mentioned Master exception time-out time may is that notification time * 3+
Notification time * (256- priority)/256.
The notification packet that priority is 0 is special method.When Backup road of the Master router into VRRP backup group
When sending the notification packet that the priority carried is 0 by device, indicate that current Master router abandons the identity of Master.VRRP
After Backup router in backup group receives the notification packet that the priority of carrying is 0, by Master exception time-out time
Setting are as follows: notification time * (256- priority)/256.
In this example, the election of Master router can be there are two types of mode:
On the one hand, it is 0 that the second router and third router, which receive the priority of the carrying of the first router transmission,
After notification packet, local Master exception time-out time is set are as follows: notification time * (256- priority)/256.Second tunnel
By the Master exception time-out time of device are as follows: notification time * 176/256.The Master exception time-out time of third router are as follows:
Notification time * 196/256.The Master that the Master exception time-out time of the second router is less than third router is extremely overtime
The Master exception time-out time of time, the second router are first overtime.The Master exception time-out time time-out of the second router
Afterwards, it oneself is Master router that the second router, which is assert, sends to the first router and third router and carries secondary route
The notification packet of device priority.Third router receives the notification packet of the second router transmission as Master router
Afterwards, to Master exception time-out time reclocking.
On the other hand, it is 0 that the second router and third router, which receive the priority of the carrying of the first router transmission,
Notification packet after, can assert it oneself is Master router immediately, and other routers into VRRP backup group are sent
Carry the notification packet of own priority.After third router receives the notification packet of the second router transmission, compare notice
The priority of the second router and local priority in message；Because the priority of the second router is higher than third router
Priority, third router abandon the identity of Master, are switched to Backup router again.The second router receives third
After the notification packet that router is sent, compare the priority of third router and local priority in notification packet；Because the
The priority of two routers is higher than the priority of third router, and the identity of the Master of the second router remains unchanged.
In this example, other Backup routers of the first router into VRRP backup group, i.e. the second router and
Three routers will judge whether to receive the second router or third router after sending the priority of carrying as 0 notification packet
The notification packet of its own priority of the carrying of response.Because the second router and the second router are likely to be at operation irregularity shape
State, or packet loss is likely to occur during the first router sends the notification packet that the priority carried is 0.At this moment first
If router is directly switched to Backup router, will there is no Master router in entire VRRP backup group, virtually
Router can not be the host forwarding data packets in local area network.
The first router after sending the notification packet that the priority carried is 0 to the second router and third router,
If confiscating the notification packet for carrying its own priority that the second router or third router are responded in notification time,
The notification packet that the priority carried is 0 is then retransmitted by interval of notification time.After if number of retransmissions reaches preset times, still
The notification packet for carrying its own priority that the second router or third router are responded is not received；Illustrate secondary route
Device and third router operation irregularity, can not be switched to Master router.Backup is switched in the first router at this time
The command expiration of router, the first router do not retransmit the notification packet that the priority of carrying is 0.
It wherein, can be using the default number of retransmissions of VRRP agreement support when above-mentioned preset times are arranged；For example, 3
It is secondary.
In this example, carrying its own priority that the first router receives that the second router or third router respond
Notification packet, it is determined that occur new Master router in VRRP backup group, the first router can be set deletion this
The delay time of the virtual ip address for the VRRP backup group that ground is pre-configured, and delete and be pre-configured after delay time time-out
The VRRP backup group virtual ip address, be switched to Backup router.The effect of the delay time is: VRRP backup
When the second router or third router in group respond notification packet to the first router for carrying own priority, even if the
Two routers are switched to Master router, the second router will issue the notification packet for carrying own priority later
The virtual ip address of VRRP backup group can be used.The delay time can prevent from switching to Backup routing because of the first router
Device, and when the second router in VRRP backup group is not yet able to use the virtual ip address of VRRP backup group, cause virtual road
By the vacancy of Master router in device.The calculation of the delay time may is that notification time * (256- priority)/
256。
In this example, after the first router is switched to Backup router, in VRRP backup group in addition to the first router
The second router of highest priority is switched to Master router.If that continues to input in the second router is switched to
The order of Backup router, then the second router will execute the order for being switched to Backup router, to VRRP backup group
In other Backup routers, i.e. the first router and the second router, send carrying priority be 0 notification packet.
The first router is still switched to the order of Backup router in response at this time；The first router receives the second tunnel
After the notification packet that priority by device transmission is 0, assert that is received is common notification packet, Master is extremely overtime
Time reclocking；The Master exception time-out time of the first router may is that notification time * 3+ notification time *, and (256- is excellent
First grade)/256.In this way, make other Backup routers for not switching Master router also in VRRP backup group
After the notification packet that the priority for receiving carrying is 0, the election of Master router is participated in front of the first router.
The priority that other Backup routers in VRRP backup group receive the carrying of the second router transmission is 0
After notification packet, the election of Master router is carried out based on the priority of itself.According to the two kinds of roads Master proposed above
By any of the way to elect of device, third router can switch to Master router.Illustrate to send out with 3 routers in this example
Bright scheme, it is practical by the scheme of the invention, all Backup routers in VRRP backup group according to priority from high to low, all
Master router can be switched to.
In this example, when the third router operation irregularity as Master router, no longer to the first router and
The second router sends notification packet.The first router and the second router are in the notice for receiving third router and finally sending
Start timing Master exception time-out time when message.When the Master exception time-out time of the first router may is that notice
Between * 3+ notification time * 156/256.When the Master exception time-out time of the second router may is that notification time * 3+ notice
Between * 176/256.The Master exception time-out time of the first router is less than the Master exception time-out time of the second router.
So the Master exception time-out time of the first router is first overtime, the life for being switched to Backup router in the first router
Failure is enabled, the first router is switched to Master router, and sends the preferential of carrying to the second router and third router
The notification packet that grade is 100.The second router receives the notification packet that the priority of the carrying of the first router transmission is 100
Afterwards, reclocking Master exception time-out time.
Therefore, when Backup router all in VRRP backup group all switched Master router, last weight
When the Master router operation irregularity newly elected, highest priority in remaining other Backup routers can be made
The abnormal time-out time time-out of Backup router and the command expiration for being switched to Backup router of its response, switch again
For Master router.Prevent virtual router from occurring lacking the failure of Master router.
In this example, restart and be switched to the first router of Backup router and can cancel cutting in the first router
It is changed to the order of Backup router.After the above-mentioned order cancellation for being switched to Backup router, the first router is being received
When the notification packet that the priority for the carrying that Master router is sent is 0, no longer by the notification packet as common notice report
Text, but set Master exception time-out time are as follows: notification time * (256- priority)/256, it is extremely overtime in the Master
The election of Master router is participated in after time time-out.Or it can also be in the first router for being switched to Backup router
The order for being switched to Backup router is cancelled in upper input, makes the order nothing for being switched to Backup router in the first router
Effect.
After the first router is switched to Master router again, unless being abnormal, otherwise the second router is unanimously located
The state of the order of Backup router is switched in execution.The second router can be restarted, or be inputted to the second router
Cancel the order for being switched to Backup router, so that the second router be made to restore normal condition.In this way when needing to allow next time
When the first router pressure is switched to Backup router, the second router receives the priority of the carrying of the first router transmission
The election of normal Master router can be participated in for 0 notification packet.
In the embodiment of the present application, when network administrator needs current Master router pressure being switched to the road Backup
When by device, one can be inputted for Master router to be switched to the order of Backup router, Master router is held
After capable this is switched to the order of Backup router, one can be sent to all Backup routers in VRRP backup group and taken
The notification packet that the priority of band is 0, according to priority size re-elects the other Backup routers for enabling in backup group
Master router, to need to upgrade current Master router in network administrator or Backup is examined to route
The operating status of device, during current Master router pressure is switched to Backup router, it is no longer necessary to modify
VRRP configuration, simplifies realization process.
With the present invention is based on the active router of VRRP agreement corresponding, the present invention that switches the secondary embodiment of method of router
Additionally provide the embodiment of the device for executing above method embodiment.
Referring to Fig. 3, for the present invention is based on one embodiment of the device of the secondary router of the active router of VRRP agreement switching
Block diagram:
As shown in figure 3, the device 30 that should switch secondary router based on the active router of VRRP agreement includes:
Transmission unit 310 executes being switched to for user's input for the first router as Master router
After the order of Backup router, it is 0 that all Backup routers in Xiang Suoshu VRRP backup group, which send the priority carried,
Notification packet, be based on priority to trigger in the VRRP backup group other Backup routers and re-elect Master routing
Device.
Judging unit 320, for judging whether to receive other Backup routers responses in the VRRP backup group
Notification packet.
Unit 330 is deleted, if the carrying road Backup returned for receiving other Backup routers
By the notification packet of device own priority, the virtual ip address for the VRRP backup group being locally pre-configured is deleted, is switched to
Backup router.
In this example, the transmission unit 310 is further used for:
If being not received by the notification packet that the Backup router returns, retransmit carrying priority be 0 it is logical
Message is accused, and after number of retransmissions reaches preset times, if not receiving the notification packet that the Backup router returns yet,
Then stop the order that Backup router is switched to described in response.
In this example, the judging unit 320 is further used for:
The first router for being switched to Backup router receives the Master router re-elected out and sends
Carrying priority be 0 notification packet after, be not responding to the notification packet in preset Master exception time-out time.
In this example, the transmission unit 310 is further used for:
In the preset Master exception time-out time, the Master router hair re-elected out is not received yet
The notification packet sent, it is determined that self-recovery is the road Master by the Master router operation irregularity re-elected out
By device.
In this example, the order for being switched to Backup router further include:
The order for being switched to Backup router is restarted in the first router for being switched to Backup router
After fail；
The first router for being switched to Backup router executes the cancellation that user inputs and is switched to Backup routing
After the order of device, the command expiration for being switched to Backup router.
In this example, the deletion unit 330, is further used for:
The delay time for deleting virtual address is set, and described in deleting after reaching the delay time and being locally pre-configured
The virtual ip address of VRRP backup group.
The application can be applied based on the embodiment for the device that the active router of VRRP agreement switches secondary router in VRRP
On router in backup group.Installation practice can also pass through hardware or software and hardware combining by software realization
Mode is realized.It taking software implementation as an example, is by the road in VRRP backup group where it as the device on a logical meaning
Computer program instructions corresponding in nonvolatile memory are read into memory what operation was formed by the processor of device.From hard
For part level, as shown in figure 4, VRRP where switching the device of secondary router based on the active router of VRRP agreement for the application
A kind of hardware structure diagram of router in backup group, in addition to processor shown in Fig. 4, memory, network interface and non-volatile
Except property memory, the router in VRRP backup group in embodiment where device is generally according to the master based on VRRP agreement
Router switches the actual functional capability of the device of secondary router, can also include other hardware, repeat no more to this.
The function of each unit and the realization process of effect are specifically detailed in the above method and correspond to step in above-mentioned apparatus
Realization process, details are not described herein.
For device embodiment, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
The purpose for needing to select some or all of the modules therein to realize application scheme.Those of ordinary skill in the art are not paying
Out in the case where creative work, it can understand and implement.
The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the application protection.
Claims (10)
1. a kind of method that active router based on VRRP agreement switches secondary router, applied to the routing in VRRP backup group
Device characterized by comprising
After what the first router execution user as Master router inputted is switched to the order of Backup router, to institute
It states all Backup routers in VRRP backup group and sends the notification packet that the priority carried is 0, to trigger the VRRP
Other Backup routers are based on priority and re-elect Master router in backup group；Wherein, the Master router
As active router, the Backup router are secondary router；
Judge whether to receive the notification packet that other Backup routers are responded in the VRRP backup group；
If receiving carrying other Backup router own priorities that other Backup routers return
Notification packet, the delay time of virtual address is deleted in setting, and deletes the institute being locally pre-configured after reaching the delay time
The virtual ip address for stating VRRP backup group is switched to Backup router.
2. the method according to claim 1, wherein the method also includes:
If being not received by the notification packet that the other Backup routers return, retransmit carrying priority be 0 it is logical
Message is accused, and after number of retransmissions reaches preset times, if not receiving the notice that other Backup routers return yet
Message then stops the order that Backup router is switched to described in response.
3. the method according to claim 1, wherein the method also includes:
The first router for being switched to Backup router receives taking for the Master router transmission re-elected out
After the notification packet that the priority of band is 0, the notification packet is not responding in preset Master exception time-out time.
4. according to the method described in claim 3, it is characterized in that, the method also includes:
In the preset Master exception time-out time, do not receive what the Master router re-elected out was sent yet
Notification packet, it is determined that self-recovery is Master router by the Master router operation irregularity re-elected out.
5. according to the method described in claim 4, it is characterized in that, the method also includes:
The order for being switched to Backup router is lost after the first router for being switched to Backup router is restarted
Effect；
The first router for being switched to Backup router executes the cancellation that user inputs and is switched to Backup router
After order, the command expiration for being switched to Backup router.
6. a kind of active router based on VRRP agreement switches the device of secondary router, applied to the routing in VRRP backup group
Device characterized by comprising
Transmission unit is switched to Backup router for the first router execution user's input as Master router
Order after, all Backup routers in Xiang Suoshu VRRP backup group send the notification packet that the priority carried is 0, with
It triggers in the VRRP backup group other Backup routers and is based on priority and re-elect Master router；Wherein, described
Master router is active router, and the Backup router is secondary router；
Judging unit, for judging whether to receive the notice report that other Backup routers are responded in the VRRP backup group
Text；
Unit is deleted, if the carrying other Backup routers returned for receiving other Backup routers
The notification packet of own priority, the delay time of virtual address is deleted in setting, and deletes this after reaching the delay time
The virtual ip address for the VRRP backup group that ground is pre-configured, is switched to Backup router.
7. device according to claim 6, which is characterized in that the transmission unit is further used for:
If being not received by the notification packet that the other Backup routers return, retransmit carrying priority be 0 it is logical
Message is accused, and after number of retransmissions reaches preset times, if not receiving the notice that other Backup routers return yet
Message then stops the order that Backup router is switched to described in response.
8. device according to claim 6, which is characterized in that the judging unit is further used for:
The first router for being switched to Backup router receives taking for the Master router transmission re-elected out
After the notification packet that the priority of band is 0, the notification packet is not responding in preset Master exception time-out time.
9. device according to claim 8, which is characterized in that the transmission unit is further used for:
In the preset Master exception time-out time, do not receive what the Master router re-elected out was sent yet
Notification packet, it is determined that self-recovery is Master router by the Master router operation irregularity re-elected out.
10. device according to claim 9, which is characterized in that the order for being switched to Backup router further include:
The order for being switched to Backup router is lost after the first router for being switched to Backup router is restarted
Effect；
The first router for being switched to Backup router executes the cancellation that user inputs and is switched to Backup router
After order, the command expiration for being switched to Backup router.
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| US11265240B1 (en) | 2020-08-19 | 2022-03-01 | Cisco Technology, Inc. | Systems and methods for determining FHRP switchover |
| CN112437454A (en) * | 2020-11-23 | 2021-03-02 | 青岛海尔科技有限公司 | Data transmission method and device, storage medium and electronic device |
| CN114143253B (en) * | 2021-11-24 | 2023-08-18 | 锐捷网络股份有限公司 | VRRP (virtual router redundancy protocol) back-cut method and device |
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