CN102882779A - VRRP (Virtual Router Redundancy Protocol) advertisement link protection method and system - Google Patents
VRRP (Virtual Router Redundancy Protocol) advertisement link protection method and system Download PDFInfo
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- CN102882779A CN102882779A CN201110196919.9A CN201110196919A CN102882779A CN 102882779 A CN102882779 A CN 102882779A CN 201110196919 A CN201110196919 A CN 201110196919A CN 102882779 A CN102882779 A CN 102882779A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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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
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Abstract
The invention discloses a VRRP (Virtual Router Redundancy Protocol) link protection method and system. The method comprises the following steps of: binding a tunnel with a rerouting function among equipment in the same VRRP group; and transmitting VRRP messages among the equipment through the tunnel. With the adoption of the method and system, the reliability of links can be improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of Virtual Router Redundacy Protocol (Virtual Router Redundancy Protocol is referred to as VRRP) announcement link protection method and system.
Background technology
The VRRP agreement defines in RFC3768, is a kind of protocol for error tolerance, and it guarantees to replace the A that breaks down to carry out work by another equipment B when the next-hop device A of main frame breaks down, thereby keeps continuity and the reliability of network service.Fig. 1 is the schematic diagram according to the application scenarios of the VRRP in the correlation technique, as shown in Figure 1, each equipment in the VRRP group is by sending out mutually the VRRP protocol massages, select main equipment (Master) by modes such as priority, Master is by sending free address resolution protocol (Address Resolution Protocol, referred to as ARP) message, with virtual media access control (the Media Access Control of oneself, referred to as MAC) address notification gives equipment or the main frame be connected with it, thereby bears the message repeating task.
Master periodically sends the VRRP message, to announce its configuration information (for example, priority etc.) and working condition.If Master breaks down, backup (Backup) equipment in the VRRP group will re-elect new Master according to priority; New Master just sends a gratuitous ARP packet that carries VRRP group virtual MAC address and virtual ip address information to main frame simply, thereby takes over the message repeating task.In the same VRRP group, the same moment can only have a master to exist, otherwise can cause the concussion of Business Stream.
Fig. 2 is the schematic diagram according to the Another application scene of the VRRP in the correlation technique, and as shown in Figure 2, in Packet Transport Network, VRRP is mainly used in providing link protection between the PE-CE equipment.Need to prove that the prerequisite of VRRP group protocol validation is that each equipment in the VRRP group needs can intercommunication VRRP agreement, if certain equipment can not receive the announcement from master in the group, will be automatically upgraded to master.
By above-mentioned analysis, the difference that exists under two kinds of application scenarioss is: a link is protected link among Fig. 1, and the VRRP notice message also sends by a link; The a link is protected link among Fig. 2, but it joins with CE, and the VRRP announcement cannot send by a link.
Fig. 3 is according to the schematic diagram that path c is arranged between PEA in the correlation technique and the PEB, as shown in Figure 3, is provided with in addition the c path between PEA and PEB.This moment, link c was used for intercommunication VRRP information between A and B, and when a link failure, PEA sends by link c and informs PEB, allows PEB upgrade to master; Born the task of data retransmission by PEB.When the PEA node failure, PEB is automatically upgraded to master by timeout mechanism behind the wait certain hour, thereby takes over data retransmission.
This networking mode can be implemented in the dual homed network of Packet Transport Network and use VRRP, thereby realizes the main-apparatus protection of link between the PE-CE.But under this application mode, the c link is a crucial link, if the c link failure, but link a, b is normal, and PEA and PEB are also working properly, and PEA owing to can't communicate by letter, will become master with PEB simultaneously.This moment, CE equipment was constantly received the gratuitous ARP announcement from distinct device (PEA and PEB), can't identification data be sent to which platform equipment actually, can cause professional disastrous effect off and on.
Business problem off and on for causing the appearance of a plurality of Master situations to cause owing to the announcement link failure in the correlation technique not yet proposes effective solution at present.
Summary of the invention
Main purpose of the present invention is to provide a kind of announcement link protection method and system, to address the above problem at least.
According to an aspect of the present invention, provide a kind of Virtual Router Redundacy Protocol VRRP announcement link protection method, having comprised: the tunnel that binding has the heavy-route function between the equipment in same VRRP group; Between described equipment, transmit the VRRP message by described tunnel.
Preferably, the described tunnel of binding comprises between the equipment in described VRRP group: connect by physical link between the described equipment, wherein, described physical link is used for transmitting described VRRP message, and described tunnel is bundled on the described physical link in advance; After detecting described physical link inefficacy, described tunnel binding can formed on the link that connects between the described equipment at other.
Preferably, detecting described physical link inefficacy comprises: detect BFD by two-way converting and detect described physical link inefficacy.
Preferably, the heavy-route function in described tunnel realizes by quick heavy-route FRR.
Preferably, described tunnel comprises dynamic tunnel and/or the static tunnel based on tag distribution protocol.
According to another aspect of the present invention, also provide a kind of Virtual Router Redundacy Protocol group agreement VRRP to announce the link protection system, this system is included in a plurality of equipment in the same VRRP group, described equipment comprises: binding module, the tunnel that other apparatus bounds that are used for organizing with described VRRP have the heavy-route function; Transport module is used for transmitting the VRRP message by described tunnel between described equipment.
Preferably, described binding module, also be used for described tunnel is bundled in the physical link that connects between the described equipment in advance, wherein, described physical link is used for transmitting described VRRP message, and after detecting described physical link inefficacy, described tunnel binding can formed on the link that connects between the described equipment at other.
Preferably, detecting described physical link by BFD lost efficacy.
Preferably, detecting described physical link by BFD lost efficacy.
Preferably, described tunnel comprises dynamic tunnel and/or the static tunnel based on tag distribution protocol.
By the present invention, adopt the tunnel that binding has the heavy-route function between the equipment in same VRRP group; Between described equipment, transmit the VRRP message by described tunnel, solved the business problem off and on that causes the appearance of a plurality of Master situations to cause owing to the announcement link failure, and then reached the effect that improves service stability.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the application scenarios of the VRRP in the correlation technique;
Fig. 2 is the schematic diagram according to the Another application scene of the VRRP in the correlation technique;
Fig. 3 is according to the schematic diagram that path c is arranged between PEA in the correlation technique and the PEB;
Fig. 4 is that the establishment d link according to the embodiment of the invention carries out the schematic diagram to the protection of c link;
Fig. 5 is the flow chart according to the VRRP announcement link protection method of the embodiment of the invention;
Fig. 6 is the structured flowchart according to the VRRP announcement link protection system of the embodiment of the invention;
Fig. 7 transmits the schematic diagram of in the dual homed network VRRP being announced link protection method in grouping according to the preferred embodiment of the invention;
Fig. 8 is the flow chart of VRRP being announced link protection method in grouping transmission dual homed network of another preferred embodiment according to the present invention.
Embodiment
Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Following examples describe as an example of the scene shown in Fig. 3 example, but applicable too for the scene of the link between the equipment in other VRRP groups that need protection.For the scene shown in Fig. 3, need to protect link c.The simplest a kind of method is provided in the present embodiment; Fig. 4 is that the establishment d link according to the embodiment of the invention carries out the schematic diagram to the protection of c link; as shown in Figure 4; the method is a newly-built physical link d again between PEA and PEB; link c and d form the port trunking group, can reduce the risk that the c link failure causes like this.But; the networking of Fig. 3 and this similar dual homed of Fig. 4 generally comes across converges or core network; common is more than the 10GE interface in actual applications; it is professional that this segment interface not necessarily can be walked actual client; iff the protection that transmits link in order to do the VRRP agreement; and to connect again a 10GE link, the unallowed situation of resource may appear.
Consider the problems referred to above, in the present embodiment, provide a kind of flow chart of announcing link protection method, Fig. 5 is that as shown in Figure 5, this flow process comprises the steps: according to the flow chart of the VRRP announcement link protection method of the embodiment of the invention
Step S502, the tunnel (tunnel) that binding has the heavy-route function between the equipment in same VRRP group, need to prove, this tunnel includes but not limited to be based on dynamic tunnel and/or the static tunnel of tag distribution protocol, it for example also can be other dynamic and/or static tunnel, and the heavy-route function of this dynamic tunnel can be by quick heavy-route (Fast Route, referred to as FRR) realize, but be not limited to this, also can realize by other the agreement with heavy-route function etc.For example, in the situation that realizes protecting by static tunnel, can realize by the configuring static protecting tunnel, for example, can dispose two static tunnels, in the situation of an inefficacy, enable an other static link and realize protection therein.
Step S504 transmits the VRRP message by the tunnel between equipment.
By above-mentioned steps, adopt tunnel that binding between the equipment in same VRRP group has a heavy-route function just the employing of this heavy-route function be the link at this place, tunnel when breaking down, can the new route of Automatic-searching, keep the unimpeded of tunnel.Cause professional problem off and on thereby solved owing to the announcement link failure causes many master, and then reached the effect that improves service stability.For example; for the scene shown in Fig. 3; (the dynamic or static tunnel of other type is applicable too can to create the Idp tunnel between PEA and PEB; describe as an example of Idp example at this); VRRP information is directly walked Idp tunnel tunnelA-B and is forwarded to PEB; correspondingly, only need to carry out protecting tunnel to tunnelA-B, then can realize the protection of VRRP information.
In a more excellent execution mode, if connect by physical link between the equipment, wherein, physical link is used for transmission VRRP message, can take full advantage of this physical link so, be bundled in advance the tunnel on the physical link, after detecting the physical link inefficacy, again tunnel binding can formed between the equipment on the link that connects at other, need to prove, detect method that physical link lost efficacy can but be not limited to detect (Bidirectional Forwarding Detection is referred to as BFD) by two-way converting and detect any detection physical link, the mode in tunnel all is applicable to the present invention.For example, also can finish by other the agreement with measuring ability.
Fig. 6 is that as shown in Figure 6, this system is included in a plurality of equipment in the same VRRP group according to the structured flowchart of the VRRP announcement link protection system of the embodiment of the invention, and each equipment wherein includes binding module 60 and transport module 62.As used below, the combination of software and/or the hardware of predetermined function can be realized in term " module ".Although the described system and method for following examples is preferably realized with software, hardware, perhaps the realization of the combination of software and hardware also may and be conceived.Carried out repeating no more of explanation, the below describes modules and function thereof.
Preferably, binding module 60 also is used for the tunnel is bundled in the physical link that connects between the equipment in advance, wherein, physical link is used for transmission VRRP message, and after detecting the physical link inefficacy, tunnel binding can formed between the equipment on the link that connects at other, need to prove, detect method that physical link lost efficacy can but be not limited to detect (Bidirectional Forwarding Detection by two-way converting, referred to as BFD) detect, for example, also can finish by other the agreement with measuring ability.
Describe below in conjunction with preferred embodiment, the preferred embodiment combines above-described embodiment and preferred implementation thereof.
Fig. 7 transmits the schematic diagram of in the dual homed network VRRP being announced link protection method in grouping according to the preferred embodiment of the invention; as shown in Figure 5; by between PEA and PEB, creating the Idp tunnel; VRRP information is directly walked Idp tunnel tunnelA-B and is forwarded to PEB; correspondingly; only need to carry out protecting tunnel to tunnelA-B, then can realize the protection of VRRP information.
When implementing, at first, create a VRRP group at A, B point respectively; Secondly, two layers of transparent transmission service between the AB point, binding Idp dynamic tunnel, the FRR function of opening dynamic tunnel is used for transmitting VRRP group advertised information; If link c lost efficacy between the AB; By the dynamic heavy-route of Idp, the path is transmitted and is become Idp2.
Fig. 8 is the flow chart of VRRP being announced link protection method in grouping transmission dual homed network of another preferred embodiment according to the present invention, and as shown in Figure 8, this flow process comprises the steps:
Step S802, A equipment create the VRRP group, and for example, virtual address is 17.1.1.100; B equipment creates the VRRP group, and its virtual address also is 17.1.1.100.
Step S804 creates a transparent transmission service between the A-B, bind a dynamic I dp tunnel, and opens BFD detection and the FRR function in tunnel, and the Idp tunnel is take Idp1 as example in this preferred embodiment.
Step S806, the interface A between the A equipment VRRP group binding PEA-CE creates incidence relation between VRRP group and the L2VPN business, send transparent transmission service to transmit on the VRRP protocol massages; Interface B between the identical B equipment VRRP group binding PEB-CE creates incidence relation between VRRP group and the L2VPN business, send transparent transmission service to transmit on the VRRP protocol massages.
Step S808, during initial condition, by a, b and Idp1 link send the VRRP message respectively, and CE equipment will be ignored protocol massages, and A, B equipment are by mutually negotiation, and selecting A equipment is master; A equipment sends free ARP message by a link, notice CE equipment virtual ip address 17.1.1.100 and virtual mac address, and CE equipment uses this virtual mac address and IP address and A to communicate.
Step S810, if a link failure, the VRRP agreement can reduce A equipment VRRP priority by monitoring a link, brings out and switches; If the A equipment failure, B equipment is automatically upgraded to master later at time-out time;
Step S812, if the c link failure, the Idp tunnel detects BFD mechanism fast detecting to fault, the FRR that starts the Idp tunnel switches; Two layers of forwarding this moment transparent transmission service is transferred to the Idp2 tunnel with the VRRP message and is transmitted, and the damage time will be controlled in the 50ms.
By above preferred embodiment and preferred implementation thereof; in the situation of c link failure; dynamic tunnel can pass through the automatic heavy-route of FRR function; thereby avoided owing to the c link failure causes two master phenomenons; and further reached the purpose of protection VRRP advertised information normal delivery, thereby provide reliable link.
In another embodiment, also provide a kind of VRRP announcement link protection software, this software is used for carrying out the technical scheme that above-described embodiment and preferred embodiment are described.
In another embodiment, also provide a kind of storage medium, stored above-mentioned VRRP announcement link protection software in this storage medium, this storage medium includes but not limited to CD, floppy disk, hard disk, scratch pad memory etc.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, carried out by calculation element thereby they can be stored in the storage device, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a Virtual Router Redundacy Protocol VRRP announcement link protection method is characterized in that, comprising:
The tunnel that binding has the heavy-route function between the equipment in same VRRP group;
Between described equipment, transmit the VRRP message by described tunnel.
2. guard method according to claim 1 is characterized in that, the described tunnel of binding comprises between the equipment in described VRRP group:
Connect by physical link between the described equipment, wherein, described physical link is used for transmitting described VRRP message, and described tunnel is bundled on the described physical link in advance;
After detecting described physical link inefficacy, described tunnel binding can formed on the link that connects between the described equipment at other.
3. guard method according to claim 2 is characterized in that, detects described physical link inefficacy and comprises:
Detect BFD by two-way converting and detect described physical link inefficacy.
4. guard method according to claim 3 is characterized in that, described heavy-route function comprises by quick heavy-route FRR or by the new tunnel realization of configuration.
5. each described guard method is characterized in that according to claim 1-4, and described tunnel comprises based on the dynamic tunnel of tag distribution protocol and/or static tunnel.
6. a Virtual Router Redundacy Protocol group agreement VRRP announcement link protection system is included in a plurality of equipment in the same VRRP group, it is characterized in that described equipment comprises:
Binding module, the tunnel that other apparatus bounds that are used for organizing with described VRRP have the heavy-route function;
Transport module is used for transmitting the VRRP message by described tunnel between described equipment.
7. protection system according to claim 6; it is characterized in that; described binding module; also be used for described tunnel is bundled in the physical link that connects between the described equipment in advance; wherein; described physical link is used for transmitting described VRRP message, and after detecting described physical link inefficacy, described tunnel binding can formed on the link that connects between the described equipment at other.
8. protection system according to claim 7 is characterized in that, comprises that detecting described physical link by BFD lost efficacy.
9. protection system according to claim 8 is characterized in that, comprises that detecting described physical link by BFD lost efficacy.
10. each described protection system is characterized in that according to claim 6-9, and described tunnel comprises based on the dynamic tunnel of tag distribution protocol and/or static tunnel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110196919.9A CN102882779A (en) | 2011-07-14 | 2011-07-14 | VRRP (Virtual Router Redundancy Protocol) advertisement link protection method and system |
| PCT/CN2012/074936 WO2013007124A1 (en) | 2011-07-14 | 2012-04-28 | Method and system for advertising virtual router redundancy protocol link protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110196919.9A CN102882779A (en) | 2011-07-14 | 2011-07-14 | VRRP (Virtual Router Redundancy Protocol) advertisement link protection method and system |
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| CN102882779A true CN102882779A (en) | 2013-01-16 |
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| CN201110196919.9A Pending CN102882779A (en) | 2011-07-14 | 2011-07-14 | VRRP (Virtual Router Redundancy Protocol) advertisement link protection method and system |
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| WO (1) | WO2013007124A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135420A (en) * | 2014-07-31 | 2014-11-05 | 华为技术有限公司 | A method, apparatus and system for forwarding message |
| CN107666437A (en) * | 2016-07-27 | 2018-02-06 | 中兴通讯股份有限公司 | A kind of static tunnel restoration method, apparatus and network node |
| CN110224886A (en) * | 2019-05-31 | 2019-09-10 | 新华三技术有限公司 | Tunnel method for detecting connectivity, device and network edge device |
| CN112187634A (en) * | 2020-09-17 | 2021-01-05 | 武汉烽火技术服务有限公司 | VRRP transverse connection protection method and system |
| CN112422422A (en) * | 2020-11-23 | 2021-02-26 | 浪潮思科网络科技有限公司 | Network redundancy method, device and equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1909501A (en) * | 2005-08-05 | 2007-02-07 | 华为技术有限公司 | Method for end to end service rapid convergence and route device |
| CN101588303B (en) * | 2009-06-22 | 2011-11-09 | 福建星网锐捷网络有限公司 | Link status notice information interaction method and OSPF device |
-
2011
- 2011-07-14 CN CN201110196919.9A patent/CN102882779A/en active Pending
-
2012
- 2012-04-28 WO PCT/CN2012/074936 patent/WO2013007124A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104135420A (en) * | 2014-07-31 | 2014-11-05 | 华为技术有限公司 | A method, apparatus and system for forwarding message |
| CN107666437A (en) * | 2016-07-27 | 2018-02-06 | 中兴通讯股份有限公司 | A kind of static tunnel restoration method, apparatus and network node |
| CN110224886A (en) * | 2019-05-31 | 2019-09-10 | 新华三技术有限公司 | Tunnel method for detecting connectivity, device and network edge device |
| CN112187634A (en) * | 2020-09-17 | 2021-01-05 | 武汉烽火技术服务有限公司 | VRRP transverse connection protection method and system |
| CN112422422A (en) * | 2020-11-23 | 2021-02-26 | 浪潮思科网络科技有限公司 | Network redundancy method, device and equipment |
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| Publication number | Publication date |
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| WO2013007124A1 (en) | 2013-01-17 |
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