CN106100987A - A kind of method and device of the secondary router of active router based on VRRP agreement switching - Google Patents
A kind of method and device of the secondary router of active router based on VRRP agreement switching Download PDFInfo
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- CN106100987A CN106100987A CN201610645657.2A CN201610645657A CN106100987A CN 106100987 A CN106100987 A CN 106100987A CN 201610645657 A CN201610645657 A CN 201610645657A CN 106100987 A CN106100987 A CN 106100987A
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- Prior art keywords
- router
- backup
- master
- vrrp
- priority
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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
-
- 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
Abstract
The application provides the method and device of the secondary router of a kind of active router based on VRRP agreement switching, described method includes: after the order switching to Backup router of the first router execution user's input of Master router, all Backup routers in described VRRP backup group send the notification packet that priority is 0 carried, and re-elect Master router based on priority triggering other Backup router in described VRRP backup group.Judge whether to receive the notification packet that in described VRRP backup group, other Backup router is responded.If receiving the notification packet carrying other Backup router own priority described that other Backup router described returns, deleting the virtual ip address of local pre-configured described VRRP backup group, switching to Backup router.In the embodiment of the present application, Master router switches to Backup router to be no longer necessary to revise VRRP backup group or the configuration of VRRP monitored item, becomes more convenient.
Description
Technical field
The application relates to communication technical field, particularly to the secondary router of a kind of active router based on VRRP agreement switching
Method and device.
Background technology
VRRP (Virtual Router Redundancy Protocol, Virtual Router Redundacy Protocol) is by IETF (The
Internet Engineering Task Force, Internet engineering duty group) the solution LAN that proposes configures quiet
There is the Routing Protocol of single point failure phenomenon in state gateway.VRRP is widely used in edge network, and its design object is to support
Under particular case, IP traffic amount unsuccessfully shifts and will not cause confusion, it is allowed to main frame uses single-router, and jumps actual first
Router still is able to the connectedness safeguarding between router when using failed.Set of router in LAN is drawn by VRRP
It is grouped together, referred to as one backup group.Backup group is made up of, functionally a Master router and multiple Backup router
Be equivalent to a virtual router.
Master router is the router that the priority elected by priority in VRRP backup group is the highest, this route
Device undertakes the function of active router in backup group, is responsible for the message under this backup group and forwards.Backup router is VRRP backup
Router in addition to Master router in group, becomes for taking over Master router when Master router failure
The active router of backup group.
In network management, manager may need upgrade current Master router or check Backup to route
The running status of device, at this moment to become Backup router by current Master router.In prior art, it is achieved Master
Router becomes the method for Backup router need to revise VRRP configuration, affects actual networking, it is achieved process is complex.
Summary of the invention
In view of this, the application provides method and the dress of the secondary router of a kind of active router based on VRRP agreement switching
Put, become the mistake of Backup router in order to solve prior art Master router in the backup group realize virtual router
The problem that journey is excessively complicated.
Specifically, the application is achieved by the following technical solution:
The method of the secondary router of a kind of active router based on VRRP agreement switching, is applied to the route in VRRP backup group
Device, including:
After the order switching to Backup router of the first router execution user's input of Master router,
All Backup routers in described VRRP backup group send the notification packet that priority is 0 carried, described to trigger
In VRRP backup group, other Backup router re-elects Master router based on priority；
Judge whether to receive the notification packet that in described VRRP backup group, other Backup router is responded；
If it is preferential that what described in receiving, other Backup router returned carries described other Backup router self
The notification packet of level, deletes the virtual ip address of local pre-configured described VRRP backup group, switches to Backup router.
In the method for the secondary router of described active router based on VRRP agreement switching, also include:
Without receiving the notification packet that other Backup router described returns, retransmitting the priority carried is 0
Notification packet, and after number of retransmissions reaches preset times, if not receiving what other Backup router described returned yet
Notification packet, then stop switching to described in response the order of Backup router.
In the method for the secondary router of described active router based on VRRP agreement switching, also include:
The described the first router switching to Backup router receives the Master router re-elected out and sends
The notification packet that the priority carried is 0 after, in default Master exception time-out time, be not responding to this notification packet.
In the method for the secondary router of described active router based on VRRP agreement switching, also include:
When in described default Master exception time-out time, do not receive the Master router re-elected out yet and send out
The notification packet sent, it is determined that the described Master router operation irregularity re-elected out, is Master road by self-recovery
By device.
In the method for the secondary router of described active router based on VRRP agreement switching, also include:
The order of the described Backup of switching to router is restarted in the described the first router switching to Backup router
Rear inefficacy；
The described the first router switching to Backup router performs the cancellation of user's input and switches to Backup to route
After the order of device, described in switch to the command expiration of Backup router.
In the method for the secondary router of described active router based on VRRP agreement switching, described deletion is local pre-configured
The virtual ip address of described VRRP backup group, also includes:
The delay time deleting virtual address is set, and arrive delete after described delay time local pre-configured described in
The virtual ip address of VRRP backup group.
The device of the secondary router of a kind of active router based on VRRP agreement switching, is applied to the route in VRRP backup group
Device, including:
Transmitting element, switches to Backup road for input as the first router of Master router execution user
After the order of device, all Backup routers in described VRRP backup group send the notice report that priority is 0 carried
Literary composition, re-elects Master router based on priority triggering other Backup router in described VRRP backup group；
Judging unit, for judging whether to receive the notice of other Backup router response in described VRRP backup group
Message；
Delete unit, if carrying other Backup road described for receive that other Backup router described returns
By the notification packet of device own priority, delete the virtual ip address of local pre-configured described VRRP backup group, switch to
Backup router.
In the device of the secondary router of described active router based on VRRP agreement switching, described transmitting element is used further
In:
Without receiving the notification packet that other Backup router described returns, retransmitting the priority carried is 0
Notification packet, and after number of retransmissions reaches preset times, if not receiving what other Backup router described returned yet
Notification packet, then stop switching to described in response the order of Backup router.
In the device of the secondary router of described active router based on VRRP agreement switching, described judging unit is used further
In:
The described the first router switching to Backup router receives the Master router re-elected out and sends
The notification packet that the priority carried is 0 after, in default Master exception time-out time, be not responding to this notification packet.
In the device of the secondary router of described active router based on VRRP agreement switching, described transmitting element is used further
In:
When in described default Master exception time-out time, do not receive the Master router re-elected out yet and send out
The notification packet sent, it is determined that the described Master router operation irregularity re-elected out, is Master road by self-recovery
By device.
In the device of described active router based on the VRRP agreement secondary router of switching, described in switch to Backup to route
The order of device also includes:
The order of the described Backup of switching to router is restarted in the described the first router switching to Backup router
Rear inefficacy；
The described the first router switching to Backup router performs the cancellation of user's input and switches to Backup to route
After the order of device, described in switch to the command expiration of Backup router.
In the device of the secondary router of described active router based on VRRP agreement switching, described deletion unit is used further
In:
The delay time deleting virtual address is set, and arrive delete after described delay time local pre-configured described in
The virtual ip address of VRRP backup group.
In the embodiment of the present application, when network manager needs to force to switch to Backup road by current Master router
During by device, one can be inputted and hold for the order that Master router is switched to Backup router, Master router
Row after this switches to the order of Backup router, can send one to all Backup routers in VRRP backup group and take
The notification packet that priority is 0 of band, makes other Backup router in backup group according to priority size to re-elect
Master router, thus need current Master router is upgraded or checks Backup to route network manager
The running status of device, during forcing to switch to Backup router by current Master router, it is no longer necessary to amendment
VRRP configures, and simplifies the process of realization.
Accompanying drawing explanation
Fig. 1 is a network architecture diagram of virtual router based on VRRP agreement；
Fig. 2 is the flow process of the method for the secondary router of a kind of based on VRRP agreement active router switching shown in the application
Figure；
Fig. 3 is the box of the device of the secondary router of a kind of based on VRRP agreement active router switching shown in the application
Figure；
Fig. 4 is the hardware knot of the device of the secondary router of a kind of based on VRRP agreement active router switching shown in the application
Composition.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the embodiment of the present application, and make the application real
Execute the above-mentioned purpose of example, feature and advantage can become apparent from understandable, below in conjunction with the accompanying drawings to prior art and the application
Technical scheme in embodiment is described in further detail.
See Fig. 1, for a network architecture diagram of virtual router based on VRRP agreement, as it can be seen, the first via by
Device, the second router, third router together constitute a backup group, form a virtual router.Master in LAN
Machine 1, main frame 2 and main frame 3 is realized and the communicating of external network by virtual router.
Specifically, the set of router that can undertake gateway function is joined in the backup group of VRRP by VRRP, is formed
One virtual router.The All hosts of same LAN all arranges identical, silent with virtual router as down hop
Recognize route.Main frame mails to the message of other network segment will mail to virtual router by default route, then be carried out by virtual router
Forward, thus realize the communication of main frame and external network.VRRP elects a Master router, Master router hold
The forwarding task that load is actual.When Master router occurs abnormal, Backup router passes through timeout mechanism and election mechanism
The Master router that election makes new advances.
VRRP backup group can elect Master router, the highest the becoming of priority according to the height of VRRP priority
Master router, the configurable priority of user is in the range of 1 to 254.If backup group exists IP address and virtual flow-line
The router that the interface IP address of device is identical, then this router is referred to as the owner of IP address, has limit priority 255.
Priority is that the Master router at 0 expression IP place actively switches to Backup router.
Under VRRP contention mode, as long as backup group having the priority of Backup router higher than Master router,
This Backup router will replace the Master router that existing Master router becomes new.
Under VRRP non-preemption pattern, as long as Master router is working properly in backup group, even if there is Backup road
Be higher than the priority of Master router by the priority of device, this Backup router can not replace existing Master route
Device becomes new Master router.
In actual applications, network manager may need to carry out upgrading or checking by current Master router
The running status of Backup router, now needs current Master router is switched to Backup router.
Existing technology can allow the priority of Backup router be higher than the excellent of Master router under contention mode
First level so that Backup router replaces the router that existing Master router becomes new, thus realizes existing
Master router becomes the conversion of Backup router.
On the one hand, the priority of existing Master router can be reduced, when the priority of existing Master router is low
When the priority of backup group medium priority the highest Backup router, this Backup router can replace existing Master
Router, makes existing Master router switch to Backup router.
On the other hand, the priority of arbitrary Backup router in backup group can be improved, when this Backup router
When priority is higher than the priority of existing Master router, this Backup router can replace existing Master router,
Existing Master router is made to switch to Backup router.
This method needs backup group is arranged in contention mode, can affect actual networking.Another side of prior art
Method is to increase or revises the monitored item of backup group, allows existing Master router actively reduce priority to 0, triggers Backup
Router re-elects and produces new Master router, and existing Master router becomes Backup router.In monitored item
In the case of not recovering, existing Master router cannot switch to Master router after becoming Backup router again, as
Fruit Master router operation irregularity hereafter, not having again other Backup router to take over becomes Master router, virtual
Router will be unable to carry out forwarding work.
In sum, current Master router is switched to Backup router at needs by existing technical scheme
Time, it is achieved Master router switches to the method for Backup router need to revise VRRP configuration, affects actual networking；Or
Backup router is switched to, it is achieved process is the most multiple by not recovering the monitored item of continuous action to be realized to Master router
Miscellaneous.
In view of this, the application provides method and the dress of the secondary router of a kind of active router based on VRRP agreement switching
Put, for solving the problem that Master router in prior art becomes the realization excessively complexity of Backup router.
See Fig. 2, switch the method for secondary router for a kind of based on VRRP agreement the active router shown in the application
Flow chart.
Step 201: as Master router the first router perform user input switch to Backup router
Order after, all Backup routers in described VRRP backup group send the notification packet that priority is 0 carried, with
Trigger other Backup router in described VRRP backup group and re-elect Master router based on priority.
Step 202: judge whether to receive the notification packet that in described VRRP backup group, other Backup router is responded.
Step 203: if receive that other Backup router described returns carries other Backup router described
The notification packet of own priority, deletes the virtual ip address of local pre-configured described VRRP backup group, switches to Backup
Router.
As it was previously stated, in prior art, Master router change Backup router need to be revised configuration, affect actual group
Net, or because change monitored item causes affected Backup router cannot become Master router again, it is achieved process is complicated.
In the present embodiment, what the first router execution user as Master router inputted switches to Backup road
After the order of device, this first router can send all in backup group of the notification packet that priority is 0 that carries
Backup router, re-elects Master router based on priority triggering Backup router.This first router exists
After receiving the notification packet of Backup router response, delete local virtual ip address, switch to Backup router.Whole
Individual process need not change the configuration of VRRP, without increasing or the monitored item of amendment VRRP backup group, it is achieved Master route
Device switches to the process of Backup router to become very convenient.
The network architecture in conjunction with Fig. 1 illustrates the technical scheme of the embodiment of the present application, sets the priority of the first router
Being 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 first router as Master router receive user input the Backup that switches to route
After the order of device, perform this order switching to Backup router.The first router owning in VRRP backup group
Backup router sends the notification packet that priority is 0 carried.Backup router in VRRP backup group, the i.e. second tunnel
By device and third router, after receiving the notification packet that the priority carried is 0 that the first router sends, based on self
Priority carry out the election of Master router.
According to VRRP agreement, the Master router in VRRP backup group sends notice according to notification time for interval timing
Message, the Backup router in informing VRRP backup group oneself works.It is local that notification packet can carry Master router
Priority.Described notification time can be traditionally arranged to be 1 second according to actual application settings.
Generally, after Backup router receives the notification packet that Master router sends, set Master
Abnormal time-out time, receives notification packet in above-mentioned Master exception time-out time, then to above-mentioned Master abnormal the most overtime time
Between reclocking；If not receiving the notification packet of Master router in above-mentioned Master exception time-out time, the most above-mentioned
Master exception time-out time time-out, Backup router identification oneself is Master router, its in 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.
Priority be the notification packet of 0 be special method.When Master router Backup road in VRRP backup group
When being sent, by device, the notification packet that priority is 0 carried, represent that current Master router abandons the identity of Master.VRRP
After Backup router in backup group receives the notification packet that priority is 0 carried, by Master exception time-out time
It is set as: notification time * (256-priority)/256.
In this example, the election of Master router can have a two ways:
On the one hand, the second router and third router receive the priority carried of the first router transmission is 0
After notification packet, local Master exception time-out time is set as: notification time * (256-priority)/256.Second tunnel
By the Master exception time-out time of device it is: notification time * 176/256.The Master exception time-out time of third router is:
Notification time * 196/256.The Master exception time-out time of the second router is abnormal less than the Master of third router overtime
Time, the Master exception time-out time of the second router first time-out.The Master exception time-out time time-out of the second router
After, the second router identification oneself is Master router, sends to the first router and third router and carries secondary route
The notification packet of device priority.Third router receives the notification packet that the second router as Master router sends
After, to Master exception time-out time reclocking.
On the other hand, the second router and third router receive the priority carried of the first router transmission is 0
Notification packet after, can assert it oneself is Master router immediately, and other router in VRRP backup group sends
Carry the notification packet of own priority.After third router receives the notification packet that the second router sends, 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 is abandoned the identity of Master, is again switched to Backup router.The second router receives the 3rd
After the notification packet that router sends, 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 keeps constant.
In this example, the first router other Backup router in VRRP backup group, i.e. the second router and
Three routers, after sending the notification packet that priority is 0 carried, judge whether to receive the second router or third router
The notification packet carrying himself priority responded.Because the second router and the second router are likely to be at operation irregularity shape
State, or it is likely to occur packet loss during the first router sends the notification packet that priority is 0 carried.At this moment first
If router directly switches to Backup router, then whole VRRP backup group will not have Master router, virtual
Router cannot be the main frame forwarding data packets in LAN.
The first router after sending, to the second router and third router, the notification packet that priority is 0 carried,
If confiscating the second router or the notification packet carrying himself priority of third router response in notification time,
Then retransmit, with notification time, the notification packet that priority is 0 carried for interval.If after number of retransmissions reaches preset times, still
The most do not receive the second router or the notification packet carrying himself priority of third router response；Secondary route is described
Device and third router operation irregularity, it is impossible to switch to Master router.Now switch to Backup in the first router
The command expiration of router, the first router does not retransmit the notification packet that priority is 0 carried.
Wherein, when arranging above-mentioned preset times, the acquiescence number of retransmissions that VRRP agreement is supported can be used；Such as, 3
Secondary.
In this example, what the first router received that the second router or third router respond carries himself priority
Notification packet, it is determined that VRRP backup group occurs in that new Master router, the first router can arrange deletion this
The delay time of the virtual ip address of the described VRRP backup group that ground is pre-configured, and delete pre-configured after this delay time time-out
The virtual ip address of described VRRP backup group, switch to Backup router.The effect of this delay time is: VRRP backs up
When the second router in group or third router respond the notification packet carrying own priority to the first router, even if the
Two routers switch to Master router, the second router will send the notification packet that carries own priority
The virtual ip address of VRRP backup group can be used.This delay time is possible to prevent because the first router switches to Backup route
Device, and when the second router in VRRP backup group not yet can use the virtual ip address of VRRP backup group, cause virtual road
By the vacancy of Master router in device.The calculation of this delay time may is that notification time * (256-priority)/
256。
In this example, after the first router switches to Backup router, in VRRP backup group in addition to the first router
The second router that priority is the highest switches to Master router.If what continuation inputted in the second router switches to
The order of Backup router, then the second router is by performing this order switching to Backup router, to VRRP backup group
In other Backup router, i.e. the first router and the second router, send the notification packet that priority is 0 that carries.
Now the first router still switches to the order of Backup router in response；The first router receives the second tunnel
After the priority sent by device is the notification packet of 0, what identification received is common notification packet, by abnormal for Master the most 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 level)/256.In this way, other is made in VRRP backup group also not switch the Backup router of Master router
After receiving the notification packet that priority is 0 carried, before the first router, participate in the election of Master router.
It is 0 that other Backup router in VRRP backup group receives the priority carried of the second router transmission
After notification packet, priority based on self carries out the election of Master router.According to the two kinds of Master roads proposed above
Arbitrary by the way to elect of device, third router can switch to Master router.This example is sent out with 3 router explanations
Bright scheme, actual by this 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 as the third router operation irregularity of Master router, no longer to the first router and
The second router sends notification packet.The first router and the second router are receiving the notice that third router finally sends
Timing Master exception time-out time is started during message.When the Master exception time-out time of the first router may is that notice
Between * 3+ notification time * 156/256.The Master exception time-out time of the second router may is that when notification time * 3+ notices
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 first time-out, the life switching to Backup router in the first router
Order was lost efficacy, and the first router switches to Master router, and sent carry preferential to the second router and third router
Level is the notification packet of 100.The second router receives the notification packet that the priority carried is 100 that the first router sends
After, reclocking Master exception time-out time.
Therefore, when Backup router all of in VRRP backup group all switched Master router, last weight
During the Master router operation irregularity newly elected, other Backup router medium priority remaining can be made the highest
The abnormal time-out time time-out of Backup router and the command expiration switching to Backup router of its response, switch again
For Master router.Prevent virtual router from occurring lacking the fault of Master router.
In this example, restart and switch to the first router of Backup router just can cancel cutting in the first router
It is changed to the order of Backup router.After the above-mentioned order cancellation switching to Backup router, the first router is receiving
During the notification packet that the priority carried is 0 that Master router sends, no longer by this notification packet as commonly noticing report
Literary composition, but set Master exception time-out time as notification time * (256-priority)/256, abnormal the most overtime at this Master
The election of Master router is i.e. participated in after time time-out.Or can also be in the first router switching to Backup router
The order switching to Backup router is cancelled in upper input, makes the order nothing switching to Backup router in the first router
Effect.
After the first router switches to Master router again, unless occurred abnormal, otherwise the second router is unanimously located
In performing to switch to the state of the order of Backup router.The second router can be restarted, or input to the second router
Cancel the order switching to Backup router, so that the second router recovers normal condition.So allow when needing next time
When the first router forces to switch to Backup router, the second router receives the priority carried that the first router sends
Be 0 notification packet can participate in the election of normal Master router.
In the embodiment of the present application, when network manager needs to force to switch to Backup road by current Master router
During by device, one can be inputted and hold for the order that Master router is switched to Backup router, Master router
Row after this switches to the order of Backup router, can send one to all Backup routers in VRRP backup group and take
The notification packet that priority is 0 of band, makes other Backup router in backup group according to priority size to re-elect
Master router, thus need current Master router is upgraded or checks Backup to route network manager
The running status of device, during forcing to switch to Backup router by current Master router, it is no longer necessary to amendment
VRRP configures, and simplifies the process of realization.
The embodiment of the method for the secondary router of active router based on VRRP agreement with present invention switching is corresponding, the present invention
Additionally provide the embodiment of device for performing said method embodiment.
See Fig. 3, for an embodiment of the device of the secondary router of present invention active router based on VRRP agreement switching
Block diagram:
As it is shown on figure 3, the device 30 being somebody's turn to do the secondary router of active router based on VRRP agreement switching includes:
Transmitting element 310, for performing switching to of user's input as the first router of Master router
After the order of Backup router, it is 0 that all Backup routers in described VRRP backup group send the priority carried
Notification packet, re-elect Master route based on priority triggering in described VRRP backup group other Backup router
Device.
Judging unit 320, for judging whether to receive other Backup router response in described VRRP backup group
Notification packet.
Delete unit 330, if carrying described Backup road for receive that other Backup router described returns
By the notification packet of device own priority, delete the virtual ip address of local pre-configured described VRRP backup group, switch to
Backup router.
In this example, described transmitting element 310 is further used for:
Without receiving the notification packet that described Backup router returns, retransmit the priority carried be 0 logical
Accuse message, and after number of retransmissions reaches preset times, if not receiving the notification packet that described Backup router returns yet,
Then stop switching to described in response the order of Backup router.
In this example, described judging unit 320 is further used for:
The described the first router switching to Backup router receives the Master router re-elected out and sends
The notification packet that the priority carried is 0 after, in default Master exception time-out time, be not responding to this notification packet.
In this example, described transmitting element 310 is further used for:
When in described default Master exception time-out time, do not receive the Master router re-elected out yet and send out
The notification packet sent, it is determined that the described Master router operation irregularity re-elected out, is Master road by self-recovery
By device.
In this example, the order switching to Backup router described in also includes:
The order of the described Backup of switching to router is restarted in the described the first router switching to Backup router
Rear inefficacy；
The described the first router switching to Backup router performs the cancellation of user's input and switches to Backup to route
After the order of device, described in switch to the command expiration of Backup router.
In this example, described deletion unit 330, it is further used for:
The delay time deleting virtual address is set, and arrive delete after described delay time local pre-configured described in
The virtual ip address of VRRP backup group.
The embodiment of the device of the secondary router of the application active router based on VRRP agreement switching can be applied at VRRP
On router in backup group.Device embodiment can be realized by software, it is also possible to by hardware or software and hardware combining
Mode realizes.As a example by implemented in software, as the device on a logical meaning, it is by the road in the VRRP backup group of its place
By the processor of device, computer program instructions corresponding in nonvolatile memory is read what operation in internal memory was formed.From firmly
For part aspect, as shown in Figure 4, for the device place VRRP of the secondary router of the application active router based on VRRP agreement switching
A kind of hardware structure diagram of the router in backup group, except the processor shown in Fig. 4, internal memory, network interface and non-volatile
Outside property memorizer, in embodiment, the router in the VRRP backup group at device place is generally according to this master based on VRRP agreement
The actual functional capability of the device of the secondary router of router switching, it is also possible to include other hardware, this is repeated no more.
In said apparatus, the function of unit and the process that realizes of effect specifically refer to corresponding step in said method
Realize process, do not repeat them here.
For device embodiment, owing to it corresponds essentially to embodiment of the method, so relevant part sees method in fact
The part executing example illustrates.Device embodiment described above is only schematically, wherein said as separating component
The unit illustrated can be or may not be physically separate, and the parts shown as unit can be or can also
It not physical location, i.e. may be located at a place, or can also be distributed on multiple NE.Can be according to reality
Need to select some or all of module therein to realize the purpose of the application scheme.Those of ordinary skill in the art are not paying
In the case of going out creative work, i.e. it is appreciated that and implements.
The foregoing is only the preferred embodiment of the application, not in order to limit the application, all essences in the application
Within god and principle, any modification, equivalent substitution and improvement etc. done, should be included within the scope of the application protection.
Claims (12)
1. a method for the secondary router of active router based on VRRP agreement switching, is applied to the route in VRRP backup group
Device, it is characterised in that including:
After the order switching to Backup router of the first router execution user's input of Master router, to institute
State all Backup routers in VRRP backup group and send the notification packet that priority is 0 carried, to trigger described VRRP
In backup group, other Backup router re-elects Master router based on priority；
Judge whether to receive the notification packet that in described VRRP backup group, other Backup router is responded；
If what described in receiving, other Backup router returned carries other Backup router own priority described
Notification packet, deletes the virtual ip address of local pre-configured described VRRP backup group, switches to Backup router.
Method the most according to claim 1, it is characterised in that described method also includes:
Without receiving the notification packet that other Backup router described returns, retransmit the priority carried be 0 logical
Accuse message, and after number of retransmissions reaches preset times, if not receiving the notice that other Backup router described returns yet
Message, then stop switching to described in response the order of Backup router.
Method the most according to claim 1, it is characterised in that described method also includes:
What the described the first router switching to Backup router received that the Master router that re-elects out sends takes
After the notification packet that priority is 0 of band, in default Master exception time-out time, it is not responding to this notification packet.
Method the most according to claim 3, it is characterised in that described method also includes:
When, in described default Master exception time-out time, not receiving what the Master router re-elected out sent yet
Notification packet, it is determined that the described Master router operation irregularity re-elected out, is Master router by self-recovery.
Method the most according to claim 4, it is characterised in that described method also includes:
The order of the described Backup of switching to router is lost after the described the first router switching to Backup router is restarted
Effect；
The described the first router switching to Backup router performs the cancellation of user's input and switches to Backup router
After order, described in switch to the command expiration of Backup router.
Method the most according to claim 1, it is characterised in that the local pre-configured described VRRP backup group of described deletion
Virtual ip address, also includes:
The delay time deleting virtual address is set, and after arriving described delay time, deletes local pre-configured described VRRP
The virtual ip address of backup group.
7. a device for the secondary router of active router based on VRRP agreement switching, is applied to the route in VRRP backup group
Device, it is characterised in that including:
Transmitting element, switches to Backup router for input as the first router of Master router execution user
Order after, all Backup routers in described VRRP backup group send the notification packet that priority is 0 carried, with
Trigger other Backup router in described VRRP backup group and re-elect Master router based on priority；
Judging unit, for judging whether to receive the notice report of other Backup router response in described VRRP backup group
Literary composition；
Delete unit, if carrying other Backup router described for receive that other Backup router described returns
The notification packet of own priority, deletes the virtual ip address of local pre-configured described VRRP backup group, switches to Backup
Router.
Device the most according to claim 7, it is characterised in that described transmitting element is further used for:
Without receiving the notification packet that other Backup router described returns, retransmit the priority carried be 0 logical
Accuse message, and after number of retransmissions reaches preset times, if not receiving the notice that other Backup router described returns yet
Message, then stop switching to described in response the order of Backup router.
Device the most according to claim 7, it is characterised in that described judging unit is further used for:
What the described the first router switching to Backup router received that the Master router that re-elects out sends takes
After the notification packet that priority is 0 of band, in default Master exception time-out time, it is not responding to this notification packet.
Device the most according to claim 9, it is characterised in that described transmitting element is further used for:
When, in described default Master exception time-out time, not receiving what the Master router re-elected out sent yet
Notification packet, it is determined that the described Master router operation irregularity re-elected out, is Master router by self-recovery.
11. devices according to claim 10, it is characterised in that described in switch to the order of Backup router also to wrap
Include:
The order of the described Backup of switching to router is lost after the described the first router switching to Backup router is restarted
Effect；
The described the first router switching to Backup router performs the cancellation of user's input and switches to Backup router
After order, described in switch to the command expiration of Backup router.
12. devices according to claim 7, it is characterised in that described deletion unit is further used for:
The delay time deleting virtual address is set, and after arriving described delay time, deletes local pre-configured described VRRP
The virtual ip address of backup group.
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| CN106100987B (en) | 2019-06-07 |
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