CN105939254B - The method and device of VRRP backup group state switching - Google Patents
The method and device of VRRP backup group state switching Download PDFInfo
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- CN105939254B CN105939254B CN201610399464.3A CN201610399464A CN105939254B CN 105939254 B CN105939254 B CN 105939254B CN 201610399464 A CN201610399464 A CN 201610399464A CN 105939254 B CN105939254 B CN 105939254B
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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
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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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Abstract
The application provides the method and device of VRRP backup group state switching, this method comprises: keeping the state of VRRP backup group constant in standby master control according to the state of the VRRP backup group of master control backup；When standby master switching is master control, if the more main control devices of frame are in major state in VRRP backup group, major state is notified to standby router, and after being spaced the first preset time period, update the priority that comes into force of itself；If the more main control devices of frame are in stand-by state in VRRP backup group, the standby time-out time of itself is updated according to the master control notification time interval of the virtual router master in VRRP backup group, and after being spaced the second preset time period, update the priority that comes into force of itself；The VRRP backup group re-starts state election.Using this method, Network Abnormal can be caused, and realize that process is simpler to avoid when active-standby switch occurs for the more main control devices of frame.
Description
Technical field
This application involves network communication technology field more particularly to VRRP (Virtual Router Redundancy
Protocol, Virtual Router Redundacy Protocol) backup group state switching method and device.
Background technique
The set of router that gateway function can be undertaken is added in VRRP backup group by VRRP, forms a virtual flow-line
Device, the host in local area network only need to configure gateway for virtual router.In VRRP backup group, determined by VRRP election mechanism
Which platform router undertakes forwarding task, that is, elects virtual router master, then other routers are standby router.When master control road
When occurring abnormal by device, new virtual router master can be elected from standby router by timeout mechanism and election mechanism,
And other equipment in gateway are not necessarily to do any variation, to effectively improve the stability of gateway.
When the router of above-mentioned carrying VRRP agreement main control device more for frame, the master control of the more main control devices of frame
(master control borad to come into force) is responsible for Management VRRP backup group, and on standby master control (other master control borads in addition to master control) and is not backed up
The operating status relevant information of VRRP backup group.So, when the more main control devices of frame because of certain reason, for example, master control event
Active-standby switch occurs for barrier, i.e., when being master control for master switching, VRRP backup group will also re-start state election.Due to standby
In master control and it is not backed up the operating status relevant information of VRRP backup group, to cause VRRP backup group state when re-electing
It is abnormal, and then cause Network Abnormal, such as network oscillation.
In the prior art, in order to avoid active-standby switch occurs for the more main control devices of frame, VRRP backup group carries out state election
When, cause Network Abnormal, two schemes can be taken.Scheme one: the master control of the more main control devices of frame in real time backs up VRRP
The operating status relevant information of group backs up to standby master control；Scheme two: the VRRP received is led in the master control of the more main control devices of frame
Each monitored item status information for accusing message and VRRP backup group is sent to standby master control in real time.It, can by scheme one and scheme two
So that the operating status relevant information of standby master control backup VRRP backup group.However, when using scheme, for the moment, master control is to for main
The information for controlling backup is too many, and realization is more complex, moreover, because being to back up in realtime, then needs to improve the operation speed of monitored item module
Degree, it is effective in real time with the information for guaranteeing backed up；When using scheme two, the information that master control is sent to standby master control is too many, real
It is existing more complex, and it is difficult to ensure that the operating status relevant information of the VRRP backup group backed up in standby master control and master control are complete
It is consistent.
Summary of the invention
In view of this, the application provides a kind of method and device of VRRP backup group state switching, to avoid more in frame
Main control device occurs active-standby switch and causes Network Abnormal, and the application is mentioned when VRRP backup group re-starts state election
The method of confession realizes that process is simpler, also reduces the dependence to the more main control device monitored item module speeds of service of frame.
Specifically, the application is achieved by the following technical solution:
According to the embodiment of the present application in a first aspect, providing a kind of method of VRRP backup group state switching, the method
It applies on the more main control devices of frame, the more main control devices of frame include master control and standby master control, which comprises
According to the state of the VRRP backup group of master control backup, the shape of VRRP backup group is kept in the standby master control
State is constant, and the state of the VRRP backup group includes that the more main control devices of the frame are in major state in VRRP backup group,
Or stand-by state；
When the standby master switching is master control, according to the current state of the VRRP backup group in new master control, if
The more main control devices of frame are in major state in VRRP backup group, then notify major state to the VRRP backup group
In standby router update preferential from coming into force in the VRRP backup group and after being spaced the first preset time period
Grade；
If the more main control devices of frame are in stand-by state in VRRP backup group, according in the VRRP backup group
The master control notification time interval of virtual router master update from standby time-out time in the VRRP backup group, and
After the second preset time period, update from the priority that comes into force in the VRRP backup group；
The VRRP backup group re-starts state election.
In one embodiment, the state of the VRRP backup group according to master control backup, in the standby master control
The upper state for keeping VRRP backup group is constant, comprising:
After VRRP backup group completion status election, the state of VRRP backup group is sent to standby master by the master control
Control, according to the state of the VRRP backup group, if the more main control devices of the frame are virtual router master in VRRP backup group,
In the standby master control, preset highest priority will be set as from the priority that comes into force in the VRRP backup group；If
The more main control devices of frame are standby router in VRRP backup group, then, will be from described in the standby master control
The priority that comes into force in VRRP backup group is set as preset lowest priority.
In another embodiment, described that major state notifies to the standby router into the VRRP backup group, and
After being spaced the first preset time period, update from the priority that comes into force in the VRRP backup group, comprising:
Using the notification time interval being locally located as master control notification time interval, according to master control notification time interval
Standby router into the VRRP backup group sends major state notification packet, and the major state notification packet carries institute
State highest priority；
After having sent major state notification packet described in n times, updated according to each monitored item state from standby in the VRRP
The priority that comes into force in part group, the N are the natural number greater than 0.
In yet another embodiment, between the master control notification time according to the virtual router master in the VRRP backup group
Every update from the standby time-out time in the VRRP backup group, and after being spaced the second preset time period, itself is updated
The priority that comes into force in the VRRP backup group, comprising:
According to the notification time interval being locally located, virtual router master transmission M times in Xiang Suoshu VRRP backup group is spare
State advertisement message, the stand-by state notification packet carry the lowest priority, and the M is the natural number greater than 0；
It is described if receiving the master control notification packet that the virtual router master is sent within the current standby time-out time
Master control notification packet carries master control notification time interval, then is updated according to master control notification time interval from the VRRP
The standby time-out time in backup group, and after getting master control notification time interval, it is updated according to each monitored item state
From the priority that comes into force in the VRRP backup group.
In yet another embodiment, the method also includes:
If not receiving the master control notice report that the virtual router master is sent within the current standby time-out time
Oneself state is then switched to major state by stand-by state by text.
According to the second aspect of the embodiment of the present application, a kind of device of VRRP backup group state switching, described device are provided
It applies on the more main control devices of frame, the more main control devices of frame include master control and standby master control, and described device includes:
State holding elements, the state of the VRRP backup group for being backed up according to the master control, in the standby master control
Keep the state of VRRP backup group constant, the state of the VRRP backup group includes that the more main control devices of the frame are backed up in VRRP
Major state or stand-by state are in group；
Processing unit is used for when the standby master switching is master control, according to the VRRP backup group in new master control
Current state, if the more main control devices of the frame in VRRP backup group be in major state, by major state notify to
Standby router in the VRRP backup group, and after being spaced the first preset time period, it updates and is backed up from the VRRP
The priority that comes into force in group；
The processing unit, is also used to: if the more main control devices of the frame are in stand-by state in VRRP backup group,
It is updated according to the master control notification time interval of the virtual router master in the VRRP backup group from the VRRP backup group
The standby time-out time update preferential from coming into force in the VRRP backup group and after being spaced the second preset time period
Grade；
State elects unit, re-starts state election for the VRRP backup group.
In one embodiment, the state holding elements, are specifically used for:
After VRRP backup group completion status election, the state of VRRP backup group is sent to standby master by the master control
Control, according to the state of the VRRP backup group, if the more main control devices of the frame are virtual router master in VRRP backup group,
In the standby master control, preset highest priority will be set as from the priority that comes into force in the VRRP backup group；If
The more main control devices of frame are standby router in VRRP backup group, then, will be from described in the standby master control
The priority that comes into force in VRRP backup group is set as preset lowest priority.
In another embodiment, the processing unit includes:
First transmission sub-unit, notification time interval for will be locally located as master control notification time interval, according to
Standby router of the master control notification time interval into the VRRP backup group sends major state notification packet, the master
It controls state advertisement message and carries the highest priority；
First updates subelement, is used for after having sent major state notification packet described in n times, according to each monitored item state
It updates from the priority that comes into force in the VRRP backup group, the N is the natural number greater than 0.
In yet another embodiment, the processing unit includes:
Second transmission sub-unit, for the master according to the notification time interval that is locally located, in Xiang Suoshu VRRP backup group
It controls router and sends M stand-by state notification packet, the stand-by state notification packet carries the lowest priority, the M
For the natural number greater than 0；
Second updates subelement, if receiving the virtual router master within the current standby time-out time and sending
Master control notification packet, the master control notification packet carries master control notification time interval, then according between the master control notification time
Every update from the standby time-out time in the VRRP backup group, and after getting master control notification time interval,
It is updated according to each monitored item state from the priority that comes into force in the VRRP backup group.
In yet another embodiment, described device further include:
Status toggle unit, if not receiving the virtual router master within the current standby time-out time
The master control notification packet of transmission, then be switched to major state by stand-by state for oneself state.
As seen from the above-described embodiment, by being backed up in standby master control and main after completing the state election of VRRP backup group
The state of the consistent VRRP backup group of master control, subsequent when active-standby switch occurs for the more main control devices of frame, new master control is still
VRRP backup group can be handled according to the state of initial VRRP backup group, and each road in VRRP backup group
After restoring normal by the VRRP backup group configuration information (such as the priority that comes into force, standby time-out time etc.) of device, then it is again right
VRRP backup group carries out state election, VRRP backup group state election mistake occurs to be effectively prevented from, is effectively prevented from and draws
Play Network Abnormal；And since master control is only to standby master control backup VRRP backup group state, it is subsequent do not need again yet it is standby in real time
Part other information, to realize that process is relatively simple.
Detailed description of the invention
Fig. 1 shows the application scenarios schematic diagram that the embodiment of the present application realizes the method for VRRP backup group state switching；
Fig. 2 illustrates one embodiment flow chart of the method for the application VRRP backup group state switching；
Fig. 3 illustrates another embodiment flow chart of the method for the application VRRP backup group state switching；
Fig. 4 illustrates another embodiment flow chart of the method for the application VRRP backup group state switching；
Fig. 5 is a kind of hardware configuration of the more main control devices of frame where the device of the application VRRP backup group state switching
Figure；
Fig. 6 is one embodiment block diagram of the device of the application VRRP backup group state switching；
Fig. 7 is another embodiment block diagram of the device of the application VRRP backup group state switching；
Fig. 8 is another embodiment block diagram of the device of the application VRRP backup group state switching.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
It is only to be not intended to be limiting the application merely for for the purpose of describing particular embodiments in term used in this application.
It is also intended in the application and the "an" of singular used in the attached claims, " described " and "the" including majority
Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps
It may be combined containing one or more associated any or all of project listed.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application
A little information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example, not departing from
In the case where the application range, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination ".
VRRP is a kind of selection agreement, can be one virtual by the set of router tissue in local area network by its realization
Router, the host in local area network can set the default route next hop address of itself to the virtual IP address of the virtual router
Address, thus, the host in local area network can be realized by the virtual router to be led to other networks, such as internet
Letter.It, can be by election mechanism and timeout mechanism from alternate routing when the virtual router master in VRRP backup group breaks down
In device, a router is re-elected out as new virtual router master, which is continued to local area network
Interior host provides route service, to improve the stability of network.
The more main control devices of frame have several master control borads, wherein the master control borad to come into force is known as master control, then other
Master control borad is then known as standby master control.When master control is abnormal or when failure, standby master control can switch as master control, so that frame is more
Main control device has higher performance and preferable stability, therefore the more main control devices of frame are more and more applied.When
When router in VRRP backup group is frame more main control devices, VRRP agreement is operated in master control, and in standby master control usually
The relevant information of VRRP backup group operating status is not backed up.
When active-standby switch occurs for the router in VRRP backup group, i.e., when being master control for master switching, VRRP backup
Group will re-start state election, and in election, it is related due to not recording VRRP backup group operating status in new master control
Information, it is more likely that will lead to Network Abnormal, such as network oscillation.It is as follows, lead to Network Abnormal for explaining in terms of three
Reason:
First aspect: the router in VRRP backup group is when being elected as virtual router master, the master control borad of the router
List item information, such as two-layer retransmitting table, MAC address entries etc. will be issued to business board, when the state of the router is cut by major state
Be changed to stand-by state, i.e., when being switched to standby router by virtual router master, by the list item information for being issued to business board into
Row is deleted.When active-standby switch occurs for the router, i.e., when being master control for master switching, then VRRP backup group in new master control
State election will be re-started.If before active-standby switch occurs, the router be virtual router master, and active-standby switch it
Afterwards, which is still elected as virtual router master, then new master control will issue above-mentioned list item information to business board again, from
And the list item information on business board is caused to repeat；If the router is virtual router master before active-standby switch occurs, and in master
After standby switching, which is elected as standby router, will lead to the above-mentioned list item information issued originally and is not deleted.By
It is upper described, active-standby switch is occurring, when VRRP backup group re-starts state election, the list item information that will lead on business board is different
Often, to be likely to cause Network Abnormal.
Second aspect, the priority that comes into force of each router is the priority and each monitored item according to configuration in VRRP backup group
What state was calculated.When standby master switching is master control, monitored item state is needed when new master control runs one section
Between after just can be used, then when VRRP backup group is re-elected, based on the priority that comes into force be inaccurate, to very may be used
VRRP backup group state can be caused to elect mistake, so as to cause Network Abnormal.
The third aspect, it is assumed that the standby time-out time of the standby router in VRRP backup group is 9 seconds, when the standby time-out
Between be according to set by the master control notification time interval learnt from virtual router master.When the standby router is led
When standby switching, due in new master control and being not backed up the standby time-out time, then new master control can be according to spare road
The standby time-out time is reset by the configuration of device itself, it is assumed that it is 3 seconds, then, standby router did not received master in 3 seconds
Control the master control notification packet that router is sent, then it is assumed that virtual router master failure, and oneself state is switched to major state, from
And cause mistake and seize, cause Network Abnormal.
In order to avoid active-standby switch occurs in the more main control devices of frame, due to being not backed up the operation of VRRP backup group in standby master control
The relevant information of state causes Network Abnormal, and solve the prior art when VRRP backup group re-starts state election
In, the realization that the VRRP backup group operating status relevant information in master control is backed up in standby master control is more complex, and to monitored item mould
The speed of service of block relies on the problems such as larger, and this application provides a kind of method and devices of VRRP backup group state switching.
Following Fig. 1 shows the embodiment of the present application and realizes that the application scenarios of the method for VRRP backup group state switching show
It is intended to.It include: host 11, interchanger 12, server 13, router 14 and router 15 in Fig. 1.Wherein, host 11 is located at office
In the net of domain, it is to be understood that in practical applications, may exist a more than host in the local area network, in the application only with
Including being illustrated for a host in local area network, the application is without limitation；Interchanger 12 is for being responsible for each router
Between data transmission and between host 11 and server 13 data transmission；Server 13 is located in internet, Ke Yili
Solution may exist a more than server in practical applications the internet in, in the application only in internet including one
Be illustrated for platform server, the application to this with no restriction；Router 14 and router 15 all can be the more master controls of frame
Equipment, and in this application, it is assumed that two groups of VRRP backup groups are respectively configured on router 14 and router 15, respectively VRRP is standby
Part group 1 and VRRP backup group 2, i.e. router 14 and router 15 can form two virtual routers, two virtual flow-lines
Device can forward data simultaneously, to improve performance.
In above-mentioned application scenario diagram shown in FIG. 1, it is assumed that in VRRP backup group 1, the priority of router 14 is
200, the priority of router 15 is 100；In VRRP backup group 2, the priority of router 14 is 100, router 15 it is excellent
First grade is 200；And the mode of every router is contention mode.After having configured VRRP backup group, it can be selected according to VRRP
Act mechanism elects the router of highest priority in VRRP backup group for virtual router master, other in the VRRP backup group
Router is then standby router.For example, router 14 is elected as virtual router master, router 15 in VRRP backup group 1
For standby router；And in VRRP backup group 2, router 15 is elected as virtual router master, and router 14 is alternate routing
Device.It is understood that the router number in one group of VRRP backup group can be 2 more than, only with one group of VRRP in the application
Comprising being illustrated for 2 routers in backup group, the application is without limitation.
Following Fig. 2 illustrates one embodiment flow chart of the method for the application VRRP backup group state switching, the figure
On the basis of the application scenarios shown in above-mentioned Fig. 1 of process shown in 2, by router 14 execute this method for, may include with
Lower step:
Step S201: according to the state of the VRRP backup group of master control backup, VRRP is kept in the standby master control
The state of backup group is constant, and the state of the VRRP backup group includes that the more main control devices of the frame are in VRRP backup group
Major state or stand-by state.
For example, in above-mentioned application scenarios shown in FIG. 1, when VRRP backup group 1 and 2 completion status of VRRP backup group are elected
Afterwards, in VRRP backup group 1, router 14 becomes virtual router master, and in VRRP backup group 2, router 14 becomes spare road
By device.
In this application, after completing the election of above-mentioned VRRP backup group state, the master control of router 14 can be by VRRP
On backup group 1 and the respective state backup of VRRP backup group 2 to standby master control, can specifically include: router 14 is backed up in VRRP
It is in major state in group 1, stand-by state is in VRRP backup group 2.So, router 14 is in standby master control, can also be with
Continue to keep the state of VRRP backup group constant, for example, the router 14 recorded in standby master control is in VRRP backup group 1
State is still major state, and the state in VRRP backup group 2 is still stand-by state.
As can be seen from the above description, in the application, the master control of the more main control devices of frame can be only in VRRP backup group shape
After the completion of state election, the state of above-mentioned VRRP backup group is backed up to standby master control, compared to the prior art in, the information of backup compared with
Few, and not as in the prior art, master control is backed up in realtime multinomial information to for master control, thus compared to existing skill
The realization process of art, the application is relatively simple.
Step S202: when the standby master switching is master control, according to working as the VRRP backup group in new master control
Preceding state notifies major state to described if the more main control devices of the frame are in major state in VRRP backup group
Standby router in VRRP backup group, and after being spaced default first time period, it updates from the VRRP backup group
The priority that comes into force；
If the more main control devices of frame are in stand-by state in VRRP backup group, according in the VRRP backup group
The master control notification time interval of virtual router master update from standby time-out time in the VRRP backup group, and
After the second preset time period, update from the priority that comes into force in the VRRP backup group.
In this application, through the above steps described in S201, after active-standby switch occurs for router 14, new main master control
On also had recorded the state of VRRP backup group, and the shape of the VRRP backup group before active-standby switch occurs with router 14
State is consistent.
So, in this step, when active-standby switch occurs for router 14, it is standby in VRRP that router 14 can run it immediately
Major state in part group 1, while its stand-by state in VRRP backup group 2 is run immediately, specifically:
In VRRP backup group 1, router 14 is in major state, then router 14 can accuse the major state of itself
Know the standby router in the VRRP backup group 1, such as router 15.So that router 15 knows that router 14 is
Virtual router master, so that router 15 temporarily keeps the stand-by state of itself constant.Subsequent, new master control exists on router 14
After running the first preset time period, it is believed that each monitored item state has been restored normally, then being spaced first preset time period
Afterwards, then the priority that comes into force, and the coming into force in VRRP backup group 1 to router 14 can be obtained according to each monitored item state computation
Priority is modified.
Due to after being spaced the first preset time period, then to reset the coming into force in VRRP backup group 1 of router 14 excellent
First grade, so as to be effectively prevented from described in above-mentioned second aspect, due to the VRRP caused by preferential staging error that comes into force
Backup group state elects mistake, efficiently avoids causing Network Abnormal, while also significantly reducing and transporting to monitored item module
The dependence of scanning frequency degree.
In VRRP backup group 2, router 14 is in stand-by state, then router 14 is in the standby time-out that itself is arranged
When the time, virtual router master that can first into VRRP backup group 2, for example, between 15 request master control notification time of router
Every, and update according to the master control notification time interval got itself standby time-out time.It specifically, can be according to following public affairs
The standby time-out time is calculated in formula:
By foregoing description, in VRRP backup group 2, active and standby cut can occur for standby router, such as router 14
After changing, i.e., master control notification time interval is obtained to corresponding virtual router master, according to the master control notification time interval got, i.e.,
When can update the standby time-out time of itself, rather than standby time-out being set according to the notification time interval of own local configuration
Between, so as to avoid the network caused by occurring to seize described in above-mentioned second aspect due to standby router mistake different
Often.
Subsequent, new master control is after running the second preset time period on router 14, it is believed that each monitored item state
Restore normal, then can then obtain and be come into force preferentially according to each monitored item state computation after being spaced second preset time period
Grade, and modify to come into force priority of the router 14 in VRRP backup group 2.It should be noted that above-mentioned first is default
Time and the second preset time may be the same or different, the application to this with no restriction.
With above-mentioned the same thought, due to after being spaced the second preset time period, then router 14 is reset in VRRP
The priority that comes into force in backup group 2, so as to be effectively prevented from described in above-mentioned second aspect due to the priority that comes into force
VRRP backup group state caused by mistake elects mistake, efficiently avoids causing Network Abnormal, while being also effectively reduced
Dependence to the monitored item module speed of service.
Step S203: the VRRP backup group re-starts state election.
It has been reverted to normally preferentially by executing the virtual router master in step S201 and step S202, VRRP backup group
Grade, the standby time-out time of standby router and the priority that comes into force are restored normally in VRRP backup group, to back up in VRRP
When group re-starts state election, a possibility that VRRP state election mistake occurs is significantly reduced, to be effectively prevented from
Cause Network Abnormal.
As seen from the above-described embodiment, by being backed up in standby master control and main after completing the state election of VRRP backup group
The state of the consistent VRRP backup group of master control, subsequent when active-standby switch occurs for the more main control devices of frame, new master control is still
VRRP backup group can be handled according to the state of initial VRRP backup group, and each road in VRRP backup group
After restoring normal by the VRRP backup group configuration information (such as the priority that comes into force, standby time-out time etc.) of device, then it is again right
VRRP backup group carries out state election, VRRP backup group state election mistake occurs to be effectively prevented from, is effectively prevented from and draws
Play Network Abnormal；And since master control is only to standby master control backup VRRP backup group state, it is subsequent do not need again yet it is standby in real time
Part other information, to realize that process is relatively simple.
In order to allow those skilled in the art to understand the application is how to carry out VRRP backup group state to cut in more detail
It changes, will be described respectively from virtual router master and standby router two sides below, the application VRRP backup group is described in detail
The method of state switching.
Firstly, will be described as follows from virtual router master side:
Following Fig. 3 illustrates another embodiment flow chart of the method for the application VRRP backup group state switching, should
On the basis of process shown in process shown in Fig. 3 application scenarios shown in above-mentioned Fig. 1 and Fig. 2, still being executed with router 14 should
For method, it may comprise steps of:
Step S301: after VRRP backup group completion status election, the master control is by the state of VRRP backup group
Be sent to standby master control, according to the state of the VRRP backup group, if the more main control devices of the frame in VRRP backup group based on
Router is controlled, then in the standby master control, will be set as preset from the priority that comes into force in the VRRP backup group
Highest priority.
In the present embodiment, the standby master control of router 14 is how to back up the state of VRRP backup group, be may refer to above-mentioned
Associated description in step S201, does not remake be described in detail herein.
It in this step, can be with according to the state when the state for having backed up VRRP backup group in the standby master control of router 14
Know router 14 in VRRP backup group 1 for virtual router master, then router 14, can will be from VRRP in standby master control
The priority that comes into force in backup group 1 is set as pre-set highest priority, for example, 255.By the way that router 14 is existed
The priority that comes into force in VRRP backup group 1 is set as 255, can keep router 14 in VRRP backup group 1 still in master control
State.
Step S302: when the standby master switching is master control, using the notification time interval being locally located as master control
Notification time interval sends master control shape according to standby router of the master control notification time interval into the VRRP backup group
State notification packet, the major state notification packet carry the highest priority.
In the present embodiment, when active-standby switch occurs for router 14, router 14 can be to standby in VRRP backup group 1
With router, for example, router 15, sends major state notification packet.Send the master control notice of the major state notification packet
Time interval, can be consistent with the notification time interval holding that router 14 is locally located, and in the major state notification packet
Above-mentioned highest priority 255 can be carried, it, can be with so that when router 15 receives the major state notification packet
By the highest priority 255 that it is carried, compares and obtain from the priority that comes into force in VRRP backup group 1 lower than router 14
The priority that comes into force, router 15 can be made in the continuation of insurance of the relaying of VRRP backup group 1, and to hold stand-by state constant.
Step S303: after having sent major state notification packet described in n times, the life of itself is updated according to each monitored item state
Priority is imitated, the N is the natural number greater than 0.
As described in above-mentioned steps S202, after being spaced the first preset time period, it is believed that new master on router 14
Each monitored item state of master control has operated normally, in this step, can be real by sending the number of major state notification packet
Now control first preset time period.
Specifically, n times, such as 3 major state notification packets can be being sent, that is, is being spaced 2 master control notification times
Behind interval, that is, think on router 14 that each monitored item state of new master control has operated normally, then router 14 then can be with
It is updated according to each monitored item state from the priority that comes into force in VRRP backup group 1.
As seen from the above-described embodiment, after completing the state election of VRRP backup group, master control can be only standby to standby master control
Part VRRP backup group state, backup information is less, realizes relatively simple；The master control in VRRP backup group is routed in standby master control
The priority that comes into force of device is set as highest priority, and the virtual router master can be made to keep master control shape in the VRRP backup group
State is constant, and when active-standby switch occurs, i.e., major state is informed corresponding standby router, can make standby router
Continue to keep stand-by state constant, and after monitored item state normal operation, then updates virtual router master in VRRP backup group
The priority that comes into force can be effectively avoided that VRRP occur standby thus when subsequent VRRP backup group re-starts state election
Part group state elects mistake, is effectively prevented from and causes Network Abnormal.
Secondly, will be described as follows from standby router side:
Following Fig. 4 illustrates another embodiment flow chart of the method for the application VRRP backup group state switching, should
On the basis of process shown in process shown in Fig. 4 application scenarios shown in above-mentioned Fig. 1 and Fig. 2, still being executed with router 14 should
For method, it may comprise steps of:
Step S401: after VRRP backup group completion status election, the master control is by the state of VRRP backup group
It is sent to standby master control, according to the state of the VRRP backup group, if the more main control devices of the frame are standby in VRRP backup group
With router, then in the standby master control, by from the priority that comes into force in the VRRP backup group be set as it is preset most
Low priority.
In the present embodiment, the standby master control of router 14 is how to back up the state of VRRP backup group, be may refer to above-mentioned
Associated description in step S201, does not remake be described in detail herein.
It in this step, can be with according to the state when the state for having backed up VRRP backup group in the standby master control of router 14
Know determining router 14 in VRRP backup group 2 for standby router, then router 14 in standby master control, can will from
The priority that comes into force in VRRP backup group 2 is set as pre-set lowest priority, for example, 0.By the way that router 14 is existed
The priority that comes into force in VRRP backup group 2 is set as 0, can keep router 14 in VRRP backup group 2 still in spare shape
State.
Step S402: when the standby master switching is master control, according to the notification time interval being locally located, Xiang Suoshu
Virtual router master in VRRP backup group sends M stand-by state notification packet, described in the stand-by state notification packet carrying
Lowest priority, the M are the natural number greater than 0.
In the present embodiment, when active-standby switch occurs for router 14, router 14 can be to the master in VRRP backup group 2
Router is controlled, for example, router 15, sends stand-by state notification packet, and can carry in the stand-by state notification packet
Lowest priority 0 is stated, so that can carry by it when router 15 receives the stand-by state notification packet
Lowest priority 0 compares the priority that comes into force for obtaining and being higher than router 14 from the priority that comes into force in VRRP backup group 2,
Router 15 can be made in the continuation of insurance of the relaying of VRRP backup group 2, and to hold major state constant.
In an optional implementation, router 14 can be sent M times to router 15, such as 3 spare shapes
State notification packet sends the time interval of the stand-by state notification packet, the notification time that can be locally located with router 14
Interval holding is consistent.By sending the repeatedly stand-by state notification packet, can effectively improving router 15, to receive this standby
With the probability of state advertisement message, causes VRRP backup group status error to be effectively prevented from, be effectively prevented from and cause network
It is abnormal.
Step S403: if within the current standby time-out time, the master control notice that the virtual router master is sent is received
Message, the master control notification packet carry master control notification time interval, then update itself according to master control notification time interval
The standby time-out time in the VRRP backup group, and after getting master control notification time interval, according to each monitoring
Item state is updated from the priority that comes into force in the VRRP backup group.
When router 15 receive carry lowest priority 0 stand-by state notification packet after, can keep from
Major state in VRRP backup group 2 is constant, can also send master control notification packet to router 14, which can
To carry master control notification time interval, so that router 14 is after receiving master control notification packet, according to the master control
Notification time interval updates from the standby time-out time in VRRP backup group 2, continues to use without being to continue with by being locally configured
Standby time-out time for obtaining of notification time interval calculation, seized so as to avoid the occurrence of 14 mistake of router, lead to road
Major state is mistakenly switched to by device 14, causes network oscillation.
As described in above-mentioned steps S202, after being spaced the second preset time period, it is believed that new master on router 14
Each monitored item state of master control has operated normally, in this step, can be by getting used time at master control notification time interval
It realizes and controls second preset time period.
Specifically, each monitoring of master control new on router 14 can be thought after receiving master control notification packet
Item state has operated normally, then router 14 can then be updated according to each monitored item state from VRRP backup group 2
Come into force priority.
In addition, if router 15 within the current standby time-out time, does not receive corresponding virtual router master institute
The master control notification packet of transmission, it may be considered that virtual router master failure, so as to which oneself state is switched by stand-by state
For major state.
As seen from the above-described embodiment, after completing the state election of VRRP backup group, master control can be only standby to standby master control
Part VRRP backup group state, backup information is less, realizes relatively simple；By the alternate routing in VRRP backup group in standby master control
The priority that comes into force of device is set as lowest priority, and the virtual router master can be made to keep spare shape in the VRRP backup group
State is constant, and when active-standby switch occurs, i.e., to virtual router master request master control notification time interval, is noticed according to master control
Standby time-out time of the time interval setting certainly in VRRP backup group, and after monitored item state normal operation, then update
Come into force priority of the standby router in VRRP backup group, thus when subsequent VRRP backup group re-starts state election,
It can be effectively avoided and VRRP backup group state election mistake occur, be effectively prevented from and cause Network Abnormal.
Corresponding with the embodiment of method of aforementioned VRRP backup group state switching, present invention also provides VRRP backup groups
The embodiment of the device of state switching.
The embodiment of the device of the application VRRP backup group state switching can be applied on the more main control devices of frame.Device
Embodiment can also be realized by software realization by way of hardware or software and hardware combining.Taking software implementation as an example,
As the device on a logical meaning, being will be in nonvolatile memory by the processor of the more main control devices of frame where it
Corresponding computer program instructions are read into memory what operation was formed.For hardware view, as shown in figure 5, being the application
A kind of hardware structure diagram of the more main control devices of frame where the device of VRRP backup group state switching, in addition to processing shown in fig. 5
Except device 51, memory 52, network interface 53 and nonvolatile memory 54 and internal bus 55, device institute in embodiment
The more main control devices of frame generally according to the more main control devices of the frame actual functional capability, can also include other hardware, to this
It repeats no more.
Referring to FIG. 6, one embodiment block diagram of the device for the switching of the application VRRP backup group state, which can be with
It include: state holding elements 61, processing unit 62, state election unit 63.
Wherein, the state holding elements 61, the state for the VRRP backup group that can be used for being backed up according to the master control,
Keep the state of VRRP backup group constant in the standby master control, the state of the VRRP backup group includes that the more master controls of the frame are set
It is standby that major state or stand-by state are in VRRP backup group；
The processing unit 62 can be used for when the standby master switching is master control, according in new master control
The current state of VRRP backup group, if the more main control devices of the frame are in major state in VRRP backup group, by master control
Standby router of the state notifying into the VRRP backup group, and after being spaced the first preset time period, it updates from institute
State the priority that comes into force in VRRP backup group；
The processing unit 62, can be also used for: if the more main control devices of the frame are in spare shape in VRRP backup group
State is then updated from the VRRP according to the master control notification time interval of the virtual router master in the VRRP backup group and is backed up
The standby time-out time in group, and after being spaced the second preset time period, it updates from coming into force in the VRRP backup group
Priority；
The state elects unit 63, can be used for the VRRP backup group and re-starts state election.
In one embodiment, the state holding elements 61, specifically can be used for:
After VRRP backup group completion status election, the state of VRRP backup group is sent to standby master by the master control
Control, according to the state of the VRRP backup group, if the more main control devices of the frame are virtual router master in VRRP backup group,
In the standby master control, preset highest priority will be set as from the priority that comes into force in the VRRP backup group；If
The more main control devices of frame are standby router in VRRP backup group, then, will be from described in the standby master control
The priority that comes into force in VRRP backup group is set as preset lowest priority.
Referring to FIG. 7, another embodiment block diagram of the device for the switching of the application VRRP backup group state, Fig. 7 institute
The device shown, on the basis of above-mentioned Fig. 6 shown device, wherein processing unit 62 may include: the first transmission sub-unit
621, first updates subelement 622.
First transmission sub-unit 621, the notification time interval that can be used for be locally located is as master control notification time
Interval sends major state notice report according to standby router of the master control notification time interval into the VRRP backup group
Text, the major state notification packet carry the highest priority；
The first update subelement 622, can be used for after having sent major state notification packet described in n times, according to each
Monitored item state is updated from the priority that comes into force in the VRRP backup group, and the N is the natural number greater than 0.
Referring to FIG. 8, another embodiment block diagram of the device for the switching of the application VRRP backup group state, Fig. 8 institute
The device shown, on the basis of above-mentioned Fig. 6 shown device, wherein processing unit 62 may include: the second transmission sub-unit
623, second updates subelement 624.
Second transmission sub-unit, for the master according to the notification time interval that is locally located, in Xiang Suoshu VRRP backup group
It controls router and sends M stand-by state notification packet, the stand-by state notification packet carries the lowest priority, the M
For the natural number greater than 0；
Second updates subelement, if receiving the virtual router master within the current standby time-out time and sending
Master control notification packet, the master control notification packet carries master control notification time interval, then according between the master control notification time
Every update from the standby time-out time in the VRRP backup group, and after getting master control notification time interval,
It is updated according to each monitored item state from the priority that comes into force in the VRRP backup group.
In one embodiment, described device can also include: status toggle unit 64.
The status toggle unit 64 does not receive the master if can be used within the current standby time-out time
The master control notification packet that router is sent is controlled, then oneself state is switched to major state by stand-by state.
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 of Virtual Router Redundacy Protocol VRRP backup group state switching, which is characterized in that the method is applied
On the more main control devices of frame, the more main control devices of frame include master control and standby master control, which comprises
The master control is after the completion of VRRP backup group state is elected, to the state of the standby master control backup VRRP backup group；Root
According to the state of the VRRP backup group of master control backup, keep the state of VRRP backup group constant in the standby master control, institute
The state for stating VRRP backup group includes that the more main control devices of the frame are in major state or spare shape in VRRP backup group
State；
When the standby master switching is master control, according to the current state of the VRRP backup group in new master control, if described
The more main control devices of frame are in major state in VRRP backup group, then notify major state into the VRRP backup group
Standby router, and after being spaced the first preset time period, it updates from the priority that comes into force in the VRRP backup group；
If the more main control devices of frame are in stand-by state in VRRP backup group, according to the master in the VRRP backup group
The master control notification time interval for controlling router was updated from standby time-out time in the VRRP backup group, and at interval the
After two preset time periods, update from the priority that comes into force in the VRRP backup group；
The VRRP backup group re-starts state election.
2. the method according to claim 1, wherein the VRRP backup group according to master control backup
State keeps the state of VRRP backup group constant in the standby master control, comprising:
After VRRP backup group completion status election, the state of VRRP backup group is sent to standby master control by the master control,
According to the state of the VRRP backup group, if the more main control devices of the frame are virtual router master in VRRP backup group,
In the standby master control, preset highest priority will be set as from the priority that comes into force in the VRRP backup group；If institute
It is standby router that the more main control devices of frame, which are stated, in VRRP backup group, then, will be from the VRRP in the standby master control
The priority that comes into force in backup group is set as preset lowest priority.
3. according to the method described in claim 2, it is characterized in that, described notify major state into the VRRP backup group
Standby router update from the priority that comes into force in the VRRP backup group and after being spaced the first preset time period,
Include:
Using the notification time interval being locally located as master control notification time interval, according to master control notification time interval to institute
It states the standby router in VRRP backup group and sends major state notification packet, the major state notification packet carrying is described most
High priority；
After having sent major state notification packet described in n times, updated according to each monitored item state from the VRRP backup group
In the priority that comes into force, the N is natural number greater than 0.
4. according to the method described in claim 2, it is characterized in that, the virtual router master according in the VRRP backup group
Master control notification time interval update from standby time-out time in the VRRP backup group, and when interval second is preset
Between after section, update from the priority that comes into force in the VRRP backup group, comprising:
According to the notification time interval being locally located, the virtual router master in Xiang Suoshu VRRP backup group sends M stand-by state
Notification packet, the stand-by state notification packet carry the lowest priority, and the M is the natural number greater than 0；
If receiving the master control notification packet that the virtual router master is sent, the master control within the current standby time-out time
Notification packet carries master control notification time interval, then is updated according to master control notification time interval from the VRRP and backed up
The standby time-out time in group, and after getting master control notification time interval, itself is updated according to each monitored item state
The priority that comes into force in the VRRP backup group.
5. according to the method described in claim 4, it is characterized in that, the method also includes:
If not receiving the master control notification packet that the virtual router master is sent, then within the current standby time-out time
Oneself state is switched to major state by stand-by state.
6. a kind of device of VRRP backup group state switching, which is characterized in that described device is applied on the more main control devices of frame,
The more main control devices of frame include master control and standby master control, and described device includes:
State holding elements are backed up for the master control after the completion of VRRP backup group state is elected to the standby master control
The state of VRRP backup group；According to the state of the VRRP backup group of master control backup, VRRP is kept in the standby master control
The state of backup group is constant, and the state of the VRRP backup group includes that the more main control devices of the frame are in VRRP backup group
Major state or stand-by state；
Processing unit is used for when the standby master switching is master control, according to working as the VRRP backup group in new master control
Preceding state notifies major state to described if the more main control devices of the frame are in major state in VRRP backup group
Standby router in VRRP backup group, and after being spaced the first preset time period, it updates from the VRRP backup group
The priority that comes into force；
The processing unit, is also used to: if the more main control devices of the frame are in stand-by state, basis in VRRP backup group
The master control notification time interval of virtual router master in the VRRP backup group is updated from standby in the VRRP backup group
With time-out time, and after being spaced the second preset time period, update from the priority that comes into force in the VRRP backup group；
State elects unit, re-starts state election for the VRRP backup group.
7. device according to claim 6, which is characterized in that the state holding elements are specifically used for:
After VRRP backup group completion status election, the state of VRRP backup group is sent to standby master control by the master control,
According to the state of the VRRP backup group, if the more main control devices of the frame are virtual router master in VRRP backup group,
In the standby master control, preset highest priority will be set as from the priority that comes into force in the VRRP backup group；If institute
It is standby router that the more main control devices of frame, which are stated, in VRRP backup group, then, will be from the VRRP in the standby master control
The priority that comes into force in backup group is set as preset lowest priority.
8. device according to claim 7, which is characterized in that the processing unit includes:
First transmission sub-unit, the notification time interval for will be locally located is as master control notification time interval, according to described
Standby router of the master control notification time interval into the VRRP backup group sends major state notification packet, the master control shape
State notification packet carries the highest priority；
First updates subelement, for being updated after having sent major state notification packet described in n times according to each monitored item state
From the priority that comes into force in the VRRP backup group, the N is the natural number greater than 0.
9. device according to claim 7, which is characterized in that the processing unit includes:
Second transmission sub-unit, for the master control road according to the notification time interval that is locally located, in Xiang Suoshu VRRP backup group
M stand-by state notification packet is sent by device, the stand-by state notification packet carries the lowest priority, and the M is big
In 0 natural number；
Second updates subelement, if receiving the master that the virtual router master is sent within the current standby time-out time
Notification packet is controlled, the master control notification packet carries master control notification time interval, then more according to master control notification time interval
The new standby time-out time from the VRRP backup group, and after getting master control notification time interval, according to
Each monitored item state is updated from the priority that comes into force in the VRRP backup group.
10. device according to claim 9, which is characterized in that described device further include:
Status toggle unit, if not receiving the virtual router master within the current standby time-out time and sending
Master control notification packet, then oneself state is switched to major state by stand-by state.
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| CN111724790A (en) * | 2020-05-22 | 2020-09-29 | 华帝股份有限公司 | Redundancy control method based on multiple intelligent voice devices |
| CN112367253A (en) * | 2020-11-09 | 2021-02-12 | 北京卓越信通电子股份有限公司 | Method for solving multiple switching of low-priority equipment main/standby states when vrrp protocol is started in preemption mode |
| CN112929265A (en) * | 2021-02-08 | 2021-06-08 | 上海弘积信息科技有限公司 | Method for any node to place VRRP any node in main in real time |
| CN115801555B (en) * | 2023-01-06 | 2023-04-28 | 北京中科网威信息技术有限公司 | Main-standby switching method and device based on preemption delay and electronic equipment |
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| CN101277262A (en) * | 2008-04-30 | 2008-10-01 | 华为技术有限公司 | Method for restarting virtual router redundancy protocol |
| CN103200093A (en) * | 2013-03-05 | 2013-07-10 | 杭州华三通信技术有限公司 | Method and device for improving processing performance of multiple virtual router redundancy protocol (VRRP) back-up sets |
| CN104506429A (en) * | 2014-12-31 | 2015-04-08 | 瑞斯康达科技发展股份有限公司 | Router backup set managing method, router and system |
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| US9537756B2 (en) * | 2013-06-10 | 2017-01-03 | Check Point Software Technologies Ltd | Method for synchronized BGP and VRRP failover of a network device in a network |
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| CN101277262A (en) * | 2008-04-30 | 2008-10-01 | 华为技术有限公司 | Method for restarting virtual router redundancy protocol |
| CN103200093A (en) * | 2013-03-05 | 2013-07-10 | 杭州华三通信技术有限公司 | Method and device for improving processing performance of multiple virtual router redundancy protocol (VRRP) back-up sets |
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Address after: Binjiang District and Hangzhou city in Zhejiang Province Road 310051 No. 68 in the 6 storey building Applicant after: Hangzhou Dipu Polytron Technologies Inc Address before: Binjiang District and Hangzhou city in Zhejiang Province Road 310051 No. 68 in the 6 storey building Applicant before: Hangzhou Dipu Technology Co., Ltd. |
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