CN1933442A - Method and system for realizing virtual router redundant protocol master and standby equipment switching - Google Patents
Method and system for realizing virtual router redundant protocol master and standby equipment switching Download PDFInfo
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Abstract
A method for realizing switch-over of master device and standby device based on redundant protocol of virtual router includes detecting state of back to back link between VRRP master device and VRRP standby device by utilizing link fault detection technique, regulating priority of VRRP standby device according to detected link state and carrying out switch-over process of VRRP master and standby devices according to priority of VRRP standby device and priority of VRRP master device.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to the method and system that a kind of VRRP of realization master uses, stand-by equipment switches.
Background technology
Along with development of internet technology, the user improves day by day to the requirement of network reliability, and subscriber equipment all requires to insert two gateways usually, moves VRRP (Virtual Router RedundancyProtocol, Virtual Router Redundancy Protocol) between the gateway.In this agreement, the default gateway (being commonly referred to the VRRP host apparatus) that shared many access visits medium (as Ethernet) is gone up the terminal IP device carries out redundancy backup (backup gateway is called the VRRP stand-by equipment), thereby therein during a routing device fault, standby routing equipment is in time taken over forwarding work, provide transparent switching to the user, improved network service quality.
In the prior art the typical primary, spare equipment of VRRP back-to-back networking suppose that VRRP-A is default VRRP host apparatus as shown in Figure 1, VRRP-B is the VRRP stand-by equipment, the signaling of VRRP is carried on the link between VRRP-A and the VRRP-B.
When the VRRP-A fault, as the VRRP-A fault that veneer or complete machine reset and cause, the link that carries the VRRP signaling this moment is unavailable, VRRP-B can not receive the signaling message that VRRP-A sends, under default configuration, after three seconds, VRRP-B upgrades to the VRRP host apparatus, and outwards circulates a notice of.But before VRRP-B upgrades to host apparatus, the up message of CE (Customer Edge, user's edge device) side apparatus is still delivered to VRRP-B in the meeting, and VRRP-B still can attempt it is given to VRRP-A, but this moment, therefore the VRRP-A fault can cause service disconnection.
Generally, the a plurality of VRRP groups of carrying above the VRRP gateway, if adopt the time of compressing the VRRP Signalling exchange simply to improve the speed of the active and standby switching of VRRP, may cause control plane pressure excessive, VRRP switches unusually, even influences other agreements and business, therefore, basically be the limit of traditional VRRP technology the switching time of 3s, is difficult to further raising.
Because when the VRRP host apparatus broke down, the VRRP stand-by equipment perceived the fault of VRRP host apparatus, and the uplink service break period of the time length that switches to the VRRP host apparatus when having determined VRRP host apparatus fault.So there is following shortcoming in existing VRRP technology:
When the VRRP host apparatus breaks down, stand-by equipment switching time long (time that need reach 3s), be difficult to satisfy 3G/NGN (Next Generation Network, next generation network) and other demand (such as less than 1s) to business that strict restriction is arranged switching time.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide the method and system that a kind of VRRP of realization master uses, stand-by equipment switches, the VRRP stand-by equipment can be within less than the time of 1s perception VRRP host apparatus fault fast, and upgrade to the VRRP host apparatus, thereby make the time that CE equipment uplink service interrupts to be controlled within the 1s, satisfy the requirement of the contour reliable service of 3G/NGN.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides the method that a kind of VRRP of realization master uses, stand-by equipment switches, comprise the steps:
The state of side-by-side link between A, employing link failure detection technology for detection VRRP host apparatus and the VRRP stand-by equipment;
B, adjust the priority of VRRP stand-by equipment according to the Link State that detects;
C, carry out the hand-off process of VRRP master with, stand-by equipment according to the priority of the priority of VRRP stand-by equipment and VRRP host apparatus.
Link failure detection technology in the described steps A comprises:
Two-way forwarding detection technique BFD, ethernet operation and maintenance technology Ethernet OAM, interruption perception interface are opened UP/ and are closed DOWN technology or perception transmitting warning technology.
Described side-by-side link comprises one or more, and described step B comprises:
When the state that detects side-by-side link was unusual from normally becoming, the VRRP stand-by equipment was according to its priority of pre-configured increase.
When described side-by-side link is many, and described step B also comprises:
Revert to just often when detecting the side-by-side link that becomes abnormality, the VRRP stand-by equipment reduces its priority according to the priority of described increase.
Described VRRP stand-by equipment specifically comprises according to the step that the priority that increases reduces its priority:
The VRRP stand-by equipment reduces its priority, and the priority that reduces and this link to become the priority that is increased when unusual identical.
Described step C comprises:
When the priority of VRRP stand-by equipment surpassed the priority of VRRP host apparatus, then the VRRP stand-by equipment switched to host apparatus.
The present invention also provides the system that a kind of VRRP of realization master uses, stand-by equipment switches, and comprising: link detecting module, priority adjusting module and VRRP equipment hand-off process module;
Described link detecting module is used to adopt the state of side-by-side link between link failure detection technology for detection VRRP host apparatus and the VRRP stand-by equipment;
Described priority adjusting module is used for the priority according to the detected described side-by-side link state adjustment VRRP stand-by equipment of described link detecting module;
Described VRRP equipment hand-off process module is used for according to the priority of VRRP stand-by equipment and the priority of VRRP host apparatus, carries out VRRP master's usefulness, stand-by equipment hand-off process.
Described priority adjusting module comprises: increase the priority submodule, be used for detecting the side-by-side link state from normally becoming when unusual, according to the pre-configured priority that increases the VRRP stand-by equipment when described link detecting module.
Described priority adjusting module comprises: reduce the priority submodule, be used for being many when described side-by-side link, and when detecting the side-by-side link that becomes abnormality, described link detecting module reverts to just often, according to the priority of pre-configured reduction VRRP stand-by equipment.
Described VRRP equipment hand-off process module comprises: priority is judged submodule and VRRP equipment hand-off process submodule;
Described priority is judged submodule, is used for the priority of comparison VRRP stand-by equipment and VRRP host apparatus, when the priority of VRRP stand-by equipment surpasses the priority of VRRP host apparatus, notifies described VRRP equipment hand-off process submodule to carry out hand-off process;
Described VRRP equipment hand-off process submodule is used for the notice according to described priority judgement submodule, and the VRRP stand-by equipment is switched to host apparatus.
As seen from the above technical solution provided by the invention, adopt method and system of the present invention, have following advantage:
1, because link failure detection technology such as BFD, Ethernet OAM, interruption perception interface UP/DOWN or perception transmitting warning can be within 1s, even finish link detecting within the time of 50ms, therefore, the VRRP stand-by equipment can be within less than the time of 1s (even 50ms) perception VRRP host apparatus fault fast, and upgrade to the VRRP host apparatus, thereby make the time that CE equipment uplink service interrupts to be controlled within the 1s, even within the 50ms, satisfy the requirement of the contour reliable service of 3G/NGN;
2, technical solution of the present invention is simple, implements easily;
3, the present invention can adopt the primary, spare equipment of existing VRRP back-to-back networking model realize, can compatible to greatest extent existing equipment, realize that cost is very low.
Description of drawings
Fig. 1 is the primary, spare equipment of a VRRP networking schematic diagram back-to-back;
Fig. 2 is the structural representation of the system that realization VRRP master of the present invention uses, stand-by equipment switches.
Embodiment
Core concept of the present invention is: in VRRP equipment, adopt the state of side-by-side link between link failure detection technology for detection VRRP host apparatus and the VRRP stand-by equipment, adjust the priority of VRRP stand-by equipment according to Link State, and carry out the hand-off process of VRRP stand-by equipment and host apparatus according to the priority of VRRP stand-by equipment and host apparatus.
Technical scheme of the present invention is applicable to VRRP master's usefulness shown in Figure 1, stand-by equipment networking model back-to-back, and can have one or more side-by-side link between VRRP host apparatus and the VRRP stand-by equipment.Concrete implementation comprises the steps:
Step 1: in VRRP equipment (comprising VRRP master's usefulness, stand-by equipment), adopt the state of side-by-side link between link failure detection technology for detection VRRP host apparatus (being VRRP-A) and the VRRP stand-by equipment (being VRRP-B).
Wherein, the link failure detection technology comprises: BFD (Bidirectional ForwardingDetection, two-way forwarding detection), technology such as Ethernet (Ethernet) OAM (Operationg AndMaintance, operation and maintenance), interruption perception interface UP (unlatching)/DOWN (closing) or perception transmitting warning.
Informing VRRP-B when detecting that the side-by-side link state changes between VRRP-A and the VRRP-B.
Step 2:VRRP-B adjusts the priority of VRRP-B according to side-by-side link state between VRRP-A and the VRRP-B.
The priority of adjusting VRRP-B comprises increase or reduces by two kinds of situations of its priority that detailed process is as follows:
When only having a side-by-side link between VRRP-A and the VRRP-B, when detecting this side-by-side link state by normally becoming when unusual, VRRP-B is according to its priority of pre-configured increase.
When having many side-by-side links between VRRP-A and the VRRP-B, take place when unusual when detecting wherein one or several link, VRRP-B is according to its priority of pre-configured increase; Then, recover just often when detecting unusual this or this several the Link States of generation, VRRP-B is then again according to its priority of pre-configured reduction, and the priority quantity that reduces should that the priority quantity that be increased when unusual takes place be identical with this or this several Link States.
Step 3: when the adjusted priority of VRRP-B surpassed the priority of VRRP-A, then VRRP-B switched to the VRRP host apparatus immediately, and sent notice message to CE equipment.
When side-by-side link was one between VRRP-A and the VRRP-B, after this link took place unusually, the priority of VRRP-B can surpass the priority of VRRP-A, and VRRP-B can switch to the VRRP host apparatus.
When side-by-side link is many between VRRP-A and the VRRP-B, to have only when all links and all take place when unusual, the priority of VRRP-B just can surpass the priority of VRRP-A, and VRRP-B just can switch to the VRRP host apparatus.
The present invention also provides the system that a kind of VRRP of realization master uses, stand-by equipment switches, and comprising: link detecting module, priority adjusting module and VRRP equipment hand-off process module, as shown in Figure 2.Each functions of modules is as follows:
The function of link detecting module is:
Adopt BFD, Ethernet OAM, interrupt the state of side-by-side link between link failure detection technology for detection VRRP host apparatus such as perception interface UP/DOWN or perception transmitting warning and the VRRP stand-by equipment.
The function of priority adjusting module is:
Adjust the priority of VRRP stand-by equipment according to the detected Link State of link detecting module.
When the side-by-side link between VRRP host apparatus and the VRRP stand-by equipment was one, the function of priority adjusting module realized by increasing the priority submodule.
The function that increases the priority submodule is:
When Link State is unusual from normally becoming, increase the priority of VRRP stand-by equipment according to configuration.
When the side-by-side link between VRRP host apparatus and the VRRP stand-by equipment was many, the function of priority adjusting module was by increasing the priority submodule and reducing the priority submodule and realize.
The function that reduces the priority submodule is:
When described side-by-side link is many, and, described link detecting module reverts to just often when detecting the side-by-side link that becomes abnormality, according to the priority of pre-configured reduction VRRP stand-by equipment, and the priority quantity that reduces and this link that the priority quantity that increased when unusual takes place is identical.
The function of VRRP equipment hand-off process module is:
According to the priority of VRRP stand-by equipment and the priority of VRRP host apparatus, carry out VRRP master's usefulness, stand-by equipment hand-off process.
The function of VRRP equipment hand-off process module is judged submodule and the realization of VRRP equipment hand-off process submodule by priority.
Priority judges that the function of submodule is:
The priority that compares VRRP stand-by equipment and VRRP host apparatus, when the priority of VRRP stand-by equipment surpassed the priority of VRRP host apparatus, informing VRRP equipment hand-off process submodule carried out hand-off process;
The function of VRRP equipment hand-off process submodule is:
Notice according to priority judgement submodule switches to host apparatus with the VRRP stand-by equipment.
Wherein, the priority adjusting module can be arranged in the VRRP stand-by equipment;
VRRP equipment hand-off process module also can be arranged in the VRRP stand-by equipment;
The link detecting module can be arranged in VRRP host apparatus and the stand-by equipment.
Because BFD, Ethernet OAM, interrupting link failure detection technology such as perception interface UP/DOWN or perception transmitting warning can be within 1s, even finish link detecting within the time of 50ms, therefore, adopt method and system of the present invention, when the side-by-side link of carrying VRRP signaling breaks down, the VRRP stand-by equipment can be within less than the time of 1s (even 50ms) perception VRRP host apparatus fault fast, and upgrade to the VRRP host apparatus, thereby can be controlled within the 1s break period of uplink service, even be controlled within the 50ms, can satisfy the requirement of the contour reliable service of 3G/NGN.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1, a kind of method that realizes that Virtual Router Redundancy Protocol VRRP master uses, stand-by equipment switches is characterized in that, comprises the steps:
The state of side-by-side link between A, employing link failure detection technology for detection VRRP host apparatus and the VRRP stand-by equipment;
B, adjust the priority of VRRP stand-by equipment according to the Link State that detects;
C, carry out the hand-off process of VRRP master with, stand-by equipment according to the priority of the priority of VRRP stand-by equipment and VRRP host apparatus.
2, method according to claim 1 is characterized in that, the link failure detection technology in the described steps A comprises:
Two-way forwarding detection technique BFD, ethernet operation and maintenance technology Ethernet OAM, interruption perception interface are opened UP/ and are closed DOWN technology or perception transmitting warning technology.
3, method according to claim 1 is characterized in that, described side-by-side link comprises one or more, and described step B comprises:
When the state that detects side-by-side link was unusual from normally becoming, the VRRP stand-by equipment was according to its priority of pre-configured increase.
4, method according to claim 3 is characterized in that, when described side-by-side link is many, and described step B also comprises:
Revert to just often when detecting the side-by-side link that becomes abnormality, the VRRP stand-by equipment reduces its priority according to the priority of described increase.
5, method according to claim 4 is characterized in that, described VRRP stand-by equipment specifically comprises according to the step that the priority that increases reduces its priority:
The VRRP stand-by equipment reduces its priority, and the priority that reduces and this link to become the priority that is increased when unusual identical.
6, according to the described method of each claim of claim 1 to 5, it is characterized in that described step C comprises:
When the priority of VRRP stand-by equipment surpassed the priority of VRRP host apparatus, then the VRRP stand-by equipment switched to host apparatus.
7, a kind of system that realizes that Virtual Router Redundancy Protocol VRRP master uses, stand-by equipment switches is characterized in that, comprising: link detecting module, priority adjusting module and VRRP equipment hand-off process module;
Described link detecting module is used to adopt the state of side-by-side link between link failure detection technology for detection VRRP host apparatus and the VRRP stand-by equipment;
Described priority adjusting module is used for the priority according to the detected described side-by-side link state adjustment VRRP stand-by equipment of described link detecting module;
Described VRRP equipment hand-off process module is used for according to the priority of VRRP stand-by equipment and the priority of VRRP host apparatus, carries out VRRP master's usefulness, stand-by equipment hand-off process.
8, system according to claim 7, it is characterized in that, described priority adjusting module comprises: increase the priority submodule, be used for detecting the side-by-side link state from normally becoming when unusual, according to the pre-configured priority that increases the VRRP stand-by equipment when described link detecting module.
9, system according to claim 8, it is characterized in that, described priority adjusting module comprises: reduce the priority submodule, be used for being many when described side-by-side link, and when detecting the side-by-side link that becomes abnormality, described link detecting module reverts to just often, according to the priority of pre-configured reduction VRRP stand-by equipment.
According to claim 7,8 or 9 described systems, it is characterized in that 10, described VRRP equipment hand-off process module comprises: priority is judged submodule and VRRP equipment hand-off process submodule;
Described priority is judged submodule, is used for the priority of comparison VRRP stand-by equipment and VRRP host apparatus, when the priority of VRRP stand-by equipment surpasses the priority of VRRP host apparatus, notifies described VRRP equipment hand-off process submodule to carry out hand-off process;
Described VRRP equipment hand-off process submodule is used for the notice according to described priority judgement submodule, and the VRRP stand-by equipment is switched to host apparatus.
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| CNB2005101030217A CN100479434C (en) | 2005-09-15 | 2005-09-15 | Method and system for realizing virtual router redundant protocol master and standby equipment switching |
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| CNB2005101030217A CN100479434C (en) | 2005-09-15 | 2005-09-15 | Method and system for realizing virtual router redundant protocol master and standby equipment switching |
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| CN100479434C CN100479434C (en) | 2009-04-15 |
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| WO2009059470A1 (en) * | 2007-11-05 | 2009-05-14 | Zte Corporation | Pe device and access method for a vrrp device to access vpn |
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| CN108429675A (en) * | 2018-03-30 | 2018-08-21 | 新华三技术有限公司 | VRRP linkage switching methods, device and electronic equipment |
| CN109039943A (en) * | 2018-09-14 | 2018-12-18 | 迈普通信技术股份有限公司 | Flow allocating method, apparatus, network system and SDN controller |
| CN109039943B (en) * | 2018-09-14 | 2022-03-18 | 迈普通信技术股份有限公司 | Flow allocation method and device, network system and SDN controller |
| CN110445712A (en) * | 2019-07-17 | 2019-11-12 | 新华三技术有限公司成都分公司 | Data forwarding method, apparatus and system |
| CN110445712B (en) * | 2019-07-17 | 2022-02-25 | 新华三技术有限公司成都分公司 | Data forwarding method, device and system |
| CN110677339A (en) * | 2019-10-08 | 2020-01-10 | 北京东土军悦科技有限公司 | Method and device for protecting redundancy between gateway nodes, gateway equipment and storage medium |
| CN111683007A (en) * | 2020-05-20 | 2020-09-18 | 新华三信息安全技术有限公司 | Method and system for switching monitoring traffic forwarding path |
| CN111953561A (en) * | 2020-07-28 | 2020-11-17 | 锐捷网络股份有限公司 | Method and device for inhibiting VRRP oscillation |
| CN111953561B (en) * | 2020-07-28 | 2022-12-13 | 锐捷网络股份有限公司 | Method and device for inhibiting VRRP oscillation |
| CN111917639A (en) * | 2020-08-06 | 2020-11-10 | 平安科技（深圳）有限公司 | VRRP and service interface linkage method, device and system, and storage device |
| CN113794541A (en) * | 2021-08-27 | 2021-12-14 | 新华三信息安全技术有限公司 | Main/standby switching management method, device, equipment and machine readable storage medium |
| CN116248581A (en) * | 2022-12-29 | 2023-06-09 | 天翼云科技有限公司 | Cloud scene gateway cluster master-slave switching method and system based on SDN |
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