CN104683233B - Shorten the method for active/standby router switching time - Google Patents
Shorten the method for active/standby router switching time Download PDFInfo
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- CN104683233B CN104683233B CN201310628233.1A CN201310628233A CN104683233B CN 104683233 B CN104683233 B CN 104683233B CN 201310628233 A CN201310628233 A CN 201310628233A CN 104683233 B CN104683233 B CN 104683233B
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Abstract
The invention proposes a kind of methods for shortening active/standby router switching time, obtain the priority chained list of standby router first；If a certain interface down of active router falls, the current priority of the active router is that former priority subtracts value, also, by first priority ratio in current priority and chained list compared with；If current priority is greater than first priority, the active router continues to serve as active router；If less than first priority of current priority, the active router is changed into standby router, then carries out single election, generates new active router.Primary active/standby router election process is all only carried out, the active router for taking on data forwarding can be selected whenever the link failure for connecting active router in network using the method for the present invention.This not only reduces the transmissions of vrrp notification packet, more importantly shorten the switching time of active/standby router, enhance the safety of network communication.
Description
Technical field
The present invention relates to a kind of methods that active/standby router is elected in network environment, especially in vrrp network environment
The method for electing active/standby router.
Background technique
Vrrp(Virtual Router Redundancy Protocol, Virtual Router Redundacy Protocol) it is a kind of default net
Redundancy approach is closed, allows set of router to constitute a virtual router, belongs to the agreement of exploitation.In the agreement, to shared more
The default gateway (Default Gateway) of terminal IP device carries out redundancy backup on access visit medium (such as Ethernet), from
And when a routing device breaks down wherein, standby routing equipment takes over forwarding work in time, provides a user transparent
Switching improves network service quality.
Currently, if some down falls in the monitoring interface of active router, working as in existing ethernet network environment
It can be a random number that priority, which subtracts value(value, before preceding priority is equal to)；And it sends and carries current priority
Vrrp notification packet.
Situation one: when the standby router in network environment receives the vrrp notification packet, compared with the priority of itself
Compared with if the priority of itself is not dealt with, i.e., the main equipment in network is constant greater than the priority of vrrp notification packet.
Situation two: when the standby router in network receives the vrrp notification packet, compared with the priority of itself, such as
The priority of fruit itself is less than the priority of vrrp notification packet, then itself will be switched to active router, and sends carrying certainly
The vrrp notification packet of body priority, only when the router for serving as main equipment before receives this part of vrrp notification packet, warp
Priority ratio is crossed compared with itself being just switched to standby router, stop the transmission of vrrp notification packet.On this basis, if net
There was only a standby router in network, then the notification packet that the same time only has this standby router to receive vrrp, active/standby road
Once by device switching, but if there is more standby routers in network, the same time, Duo Taibei router will be all
The vrrp notification packet is received, carries out priority ratio compared with the possible same time will appear multiple active routers, cause more parts of vrrp
The sending of notification packet.Multiple main standby route election process, to make to obtain correctly active/standby router time delays in network
It is longer.
Summary of the invention
Present invention technical problem to be solved is to provide a kind of method for shortening active/standby router switching time, only carries out
Primary active/standby router election process.
In order to solve the above technical problems, the present invention devises a kind of method for shortening active/standby router switching time,
Include the following steps:
Step1: obtaining the priority chained list of standby router, and the priority of each standby router is deposited according to sequence from big to small
Storage is in chained list；
Step2: the interface of active router is monitored；
Step3: if a certain interface down of active router falls, the current priority of the active router is former preferential
Grade subtracts value, also, by first priority ratio in current priority and chained list compared with；If current priority is greater than first
A priority, then the active router continues to serve as active router；If less than first priority of current priority, the master
Router is changed into standby router, and adjusts standby router priority sequence in chained list, retransmits vrrp notification packet；
Step4: all standby routers receive the vrrp notification packet, if current standby router priority is greater than vrrp
The priority of notification packet and equal with first priority in chained list, then current standby router be immediately transferred to main road by
Device, and standby router priority sequence in chained list is adjusted, retransmit vrrp notification packet；If current standby router priority is not
Meet the priority for being greater than vrrp notification packet and, then only adjustment chained list in standby routing equal with first priority in chained list
Device priority orders.
As a further improvement of that present invention, the value is customized integer value.
Using the method for the present invention, whenever the link for connecting active router in network breaks down, all only progress is primary active/standby
Router election process can select the active router for taking on data forwarding.This not only reduces the hairs of vrrp notification packet
It send, more importantly shortens the switching time of active/standby router, enhance the safety of network communication.
Detailed description of the invention
Fig. 1 is the flow chart for the method that the present invention shortens active/standby router switching time.
Specific embodiment
In order to make relevant technical staff in the field more fully understand technical solution of the present invention, below in conjunction with of the invention real
The technical solution in embodiment of the present invention is clearly and completely described in the attached drawing for applying mode, it is clear that described reality
The mode of applying is only some embodiments of the invention, rather than whole embodiments.
The present invention provides a kind of method for shortening active/standby router switching time, is applied in vrrp network environment, realizes
The active/standby router of vrrp is switched fast, and shortens switching time.
The method that the present invention shortens active/standby router switching time is applied to complete in active/standby router election for the first time
Afterwards, it in the case of network stabilization, when each active router link breaks down, is carried out again using the method for the present invention primary active/standby
Router election, generates new active router.
As shown in Figure 1, the present invention shorten the method for active/standby router switching time the following steps are included:
Step1: firstly, it is necessary to obtain the priority chained list of standby router, the priority of each standby router according to from greatly to
Small is stored sequentially in chained list.There is this chained list, when active/standby router switches, the priority of active router before is only needed
With first priority ratio in chained list compared with.
Step2: monitoring the interface of active router, after first time, active router was elected, monitors the active router
Interface carries out primary new active/standby router election if the unexpected down of a certain interface falls.In embodiment, 8 can be supported
A interface.
Step3: if the unexpected down of a certain interface of active router falls, the current priority of the active router is original
Priority subtracts value, also, by first priority ratio in current priority and chained list compared with；If current priority is greater than
First priority, then the active router continues to serve as active router；If less than first priority of current priority, institute
It states active router and is immediately transferred to standby router, and adjust standby router priority sequence in chained list, retransmit vrrp notice report
Text.Priority is carry in vrrp notification packet.
Step4: in a network environment, all standby routers receive above-mentioned vrrp notification packet, according to vrrp notification packet
Priority carry out single election, so that new active router will be generated.
If current standby router (i.e. a certain standby router) priority is greater than the priority and and chain of vrrp notification packet
First priority in table is equal, then current standby router is changed into active router by election immediately, and adjusts standby in chained list
Router priority sequence, retransmits vrrp notification packet.Described herein as, priority bit is in first standby router quilt in chained list
It is selected as active router, meanwhile, active router successful switch before is standby router, and it is as standby router, preferential
Grade is also stored into chained list, according to sequential storage from big to small.
If current standby router priority be unsatisfactory for greater than vrrp notification packet priority and with first in chained list
A priority value is equal, then only adjusts standby router priority sequence in chained list.It is described herein as, other in chained list for router,
I.e. priority make number one after other for router, or as standby router, and simultaneously, adjust standby routing in chained list
Device priority orders.
The present invention, priority are greater than the priority of vrrp notification packet and equal with first priority value in chained list,
Indicate that current router is priority bit primary standby router in chained list, the highest priority for router, quilt
Election is active router.Single election only need to be carried out, that is, completes the switching of active/standby router, it is multiple without that will send again
Vrrp notification packet, which conducts an election, to be compared.So not only reducing the transmission of vrrp notification packet, more importantly shorten
The switching time of active/standby router enhances the safety of network communication.
The present invention is to have carried out running after the completion of active/standby router election for the first time in vrrp network environment.?
After carrying out active/standby router election for the first time, that is, active router and other standby routers are produced.It is carrying out for the first time
When active/standby router is elected, it can be obtained chained list, the priority of each standby router stored in the chained list, according to from big to small
Sequence arranges.The method for carrying out active/standby router election for the first time includes: that in a network environment, router enables vrrp function,
State is changed into standby state by the init state before enabling first by the router of enabled vrrp function, if a timing
Between in range, do not receive the vrrp notification packet that other routers are sent, then transformation is main state, and starts to send and carries itself
The vrrp notification packet of priority；The router of enabled vrrp function, according to the priority received in vrrp notification packet, and from
Body priority ratio compared with.If the priority in vrrp notification packet is less than own priority, routed based on current router
Device, otherwise current router is standby router.The router of all enabled vrrp functions, when receiving vrrp notification packet,
Will by as the priority of standby router in the form of chained list list, according to sequential storage from big to small.
In the present invention, the value is customized integer value, and value can be big or small with artificially defined numerical value, if
Value numerical value is big, then before active router when breaking down, priority, which subtracts value, become its priority will more
It is small, in election below, standby router may be switched to；If value numerical value is small, priority value variation is little, possible main road
It is also to continue with and is served as by device.
Only express one embodiment of the present invention above, the description thereof is more specific and detailed, but can not therefore and
It is interpreted as limitations on the scope of the patent of the present invention.It should be pointed out that for those of ordinary skill in the art, not taking off
Under the premise of from present inventive concept, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.Cause
This, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (2)
1. a kind of method for shortening active/standby router switching time, which comprises the steps of:
Step1: obtaining the priority chained list of standby router, and the priority of each standby router is according to being stored sequentially in from big to small
In chained list；
Step2: the interface of active router is monitored；
Step3: if a certain interface down of active router falls, the current priority of the active router is that former priority subtracts
Remove value, also, by first priority ratio in current priority and chained list compared with；If current priority is excellent greater than first
First grade, then the active router continues to serve as active router；If less than first priority of current priority, the main road by
Device is immediately transferred to standby router, and adjusts standby router priority sequence in chained list, retransmits vrrp notification packet；
Step4: all standby routers receive the vrrp notification packet, if current standby router priority is noticed greater than vrrp
The priority of message and equal with first priority in chained list, then current standby router is immediately transferred to active router, and
Standby router priority sequence in chained list is adjusted, vrrp notification packet is retransmited；If current standby router priority is unsatisfactory for
Greater than the priority of vrrp notification packet and equal with first priority in chained list, then it is excellent only to adjust standby router in chained list
First grade sequence；
Wherein, when first standby router is changed into active router, active router before switches priority bit in chained list
For standby router, and active router before is used as standby its priority of router also to store into chained list, according to priority from big
To small sequential storage.
2. the method according to claim 1 for shortening active/standby router switching time, which is characterized in that the value is
Customized integer value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310628233.1A CN104683233B (en) | 2013-11-29 | 2013-11-29 | Shorten the method for active/standby router switching time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310628233.1A CN104683233B (en) | 2013-11-29 | 2013-11-29 | Shorten the method for active/standby router switching time |
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| CN104683233A CN104683233A (en) | 2015-06-03 |
| CN104683233B true CN104683233B (en) | 2019-07-19 |
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| CN201310628233.1A Active CN104683233B (en) | 2013-11-29 | 2013-11-29 | Shorten the method for active/standby router switching time |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3142296B1 (en) * | 2015-09-14 | 2018-04-18 | Siemens Aktiengesellschaft | Method for configuring a modular control device of an industrial automation system and modular control device |
| CN106941424B (en) * | 2017-04-26 | 2020-09-01 | 北京东土科技股份有限公司 | Redundancy switching method and device based on TTDP protocol |
| CN109995648A (en) * | 2017-12-29 | 2019-07-09 | 北京华为数字技术有限公司 | A kind of equipment switching method and forwarding device |
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|---|---|---|---|---|
| CN1968260A (en) * | 2005-11-17 | 2007-05-23 | 华为技术有限公司 | Method for implementing virtual router redundancy protocol switching between primary/standby devices |
| US7486610B1 (en) * | 2005-05-11 | 2009-02-03 | Cisco Technology, Inc. | Multiple virtual router group optimization |
| CN101447858A (en) * | 2008-01-17 | 2009-06-03 | 中兴通讯股份有限公司 | Method for realizing synchronous switching of virtual router redundancy protocol in dual-machine hot backup system |
| CN101729426A (en) * | 2009-12-29 | 2010-06-09 | 中兴通讯股份有限公司 | Method and system for quickly switching between master device and standby device of virtual router redundancy protocol (VRRP) |
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2013
- 2013-11-29 CN CN201310628233.1A patent/CN104683233B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7486610B1 (en) * | 2005-05-11 | 2009-02-03 | Cisco Technology, Inc. | Multiple virtual router group optimization |
| CN1968260A (en) * | 2005-11-17 | 2007-05-23 | 华为技术有限公司 | Method for implementing virtual router redundancy protocol switching between primary/standby devices |
| CN101447858A (en) * | 2008-01-17 | 2009-06-03 | 中兴通讯股份有限公司 | Method for realizing synchronous switching of virtual router redundancy protocol in dual-machine hot backup system |
| CN101729426A (en) * | 2009-12-29 | 2010-06-09 | 中兴通讯股份有限公司 | Method and system for quickly switching between master device and standby device of virtual router redundancy protocol (VRRP) |
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Effective date of registration: 20200417 Address after: 200030 room 02, floor 19, building 82, Lane 1198, Qinzhou North Road, Xuhui District, Shanghai Patentee after: Shanghai bige Network Technology Co., Ltd Address before: 201616 Shanghai city Songjiang District Guangfulin Road No. 4855 Building No. 90 big industry territory Patentee before: Phicomm (Shanghai) Co.,Ltd. |