CN102571527A - Backup and load balancing system based on virtual router redundancy - Google Patents
Backup and load balancing system based on virtual router redundancy Download PDFInfo
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Abstract
The invention discloses a backup and load balancing system based on virtual router redundancy. The backup and load balancing system comprises a plurality of entity routers, a backup control device and a load balancing device, wherein the backup control device is connected with the plurality of entity routers and forms a plurality of virtual router groups by using a virtual router redundancy protocol, the plurality of entity routers are distributed into the router groups, and in each virtual router group, one entity router is determined to be a main control router, the other routers are determined to be backup routers, the main control router is used for responding and forwarding a data packet, and the backup routers are in a standby state; and the load balancing device is connected to the plurality of entity routers and the backup control device, monitors the load flow of each entity router and sets a flow threshold, and distributes and configures the load flow of one entity router into a virtual router group, to which the entity router belongs and in which the entity router is used as the main control router, when the load flow of the entity router exceeds the flow threshold.
Description
Technical field
The present invention relates to network technology, relate in particular to a kind of backup and SiteServer LBS based on virtual route redundancy.
Background technology
Router (router) is one of critical component in the network.Router is an interconnect equipment of realizing that heterogeneous network connects, is operated in the 3rd layer of OSI, such as, can realize interconnected between local area network (LAN) and the wide area network through router.Under the Internet environment, use ICP/IP protocol, IP agreement during corresponding the 3rd layer procotol.Each is connected and all is assigned an IP address in network for each router and main frame; The IP address is the foundation of addressing in the network, and routing table is arranged in the configuration of routers, to each possible destination address; Provide the address of the next router that be sent to, be also referred to as and transmit the port or the next stop.
Router can wait according to the type of the network address, subnet mask and the upper-layer protocol of the protocol type of network layer, network number, main frame and monitor, interception and filtering information.Router is isolated each sub-net through the combination of IP address and subnet mask, helps division, the maintenance management of subnet.It also has the flow control ability simultaneously, can adopt the routing algorithm balance network load of optimization, reduces the generation of network congestion.Router has the good isolation ability, not only can avoid broadcast storm, also helps improving the fail safe confidentiality of network.
It is exactly a computer for a router itself; But router does not have the just so-called input-output equipment of screen and keyboard; When router is configured; Control port (Console port) through PC and router is connected, this PC as the terminal, thereby carry out the configuration of router with router communication.Router also is to need operating system just can carry out the configuration of network system simultaneously, and and other routers exchange information.Router is the key equipment that connects between netting in the network.As the hinge hardware that connects between the heterogeneous networks, route system has constituted the theme train of thought based on the Internet network Internet of TCP/IP, we can say that also router has constituted the body frame of Internet.Its processing speed is one of main bottleneck of network service, and its reliability then directly affects the quality of the network interconnection.Therefore, in the field of whole Internet, router technology is to be in core status all the time.Why the status of router technology is so high; Be because it is in network layer; An aspect is that he can cross over networks of different type; Second aspect is exactly that it is divided into logically independently network unit with whole the Internet, make network have certain logical construction, is not dummy rules.
Summary of the invention
The present invention is intended to propose a kind of router is backed up and the technology of load balancing, to improve the fail safe and the speed of router operation.
According to the present invention, a kind of backup and SiteServer LBS based on virtual route redundancy proposed, comprising:
Several entity routers;
Backup control device is connected to several entity routers, and backup control device uses Virtual Router Redundacy Protocol to form several virtual router group; Several entity routers are assigned in the groups of routers; In each virtual router group, confirm that an entity router is the master control router, remaining router is a backup router; The master control router is used for response and transmits packet, and backup router is ready;
The load balancing device; Be connected to several entity router and backup control device; The load balancing device is kept watch on the load flow of each entity router and is set a flow threshold value; When the load flow of an entity router surpasses flow threshold, the load flow of this entity router is shared configuration under it and in the virtual router group as the master control router.
Each virtual router group comprises at least two entity routers.Each entity router is assigned in one or several virtual router group, can comprise same entity router in the different virtual router group.
When having two or above backup router in the virtual router group, backup router has priority.In a virtual router group, when the master control router broke down, the backup router with limit priority upgraded to the master control router after fixed delay, and did not change IP address and MAC Address.
The load balancing device is given the load flow mean allocation of entity router under it and as each the entity router in the virtual router group of master control router.The load balancing device is distributed to the load flow that surpasses flow threshold of entity router under it and as other entity routers in the virtual router group of master control router.
Backup and SiteServer LBS based on virtual route redundancy of the present invention utilizes Virtual Router Redundacy Protocol VRRP to realize effectively improving the operating efficiency and the job stability of router in mutual backup between several entity routers and the equal ability of load.
Description of drawings
Fig. 1 is based on the backup of virtual route redundancy and the structure chart of SiteServer LBS according to of the present invention.
Embodiment
Because backup and the SiteServer LBS based on virtual route redundancy of the present invention is based on Virtual Router Redundacy Protocol VRRP.Virtual Router Redundacy Protocol VRRP (Virtual Router RedundancyProtocol) is the Virtual Router Redundancy Protocol that IETF formulates, and this agreement is used to avoid problem under static configuration default route environment, the problem includes: the Single Point of Faliure problem.
The present invention utilizes the characteristic of VRRP, has developed the following application based on VRRP:
VRRP can back up the IP address, and a plurality of virtual router group (Virtual Router Group) can be provided in network.VRRP can carry out the optimal path indication, selects optimum path in the route of a plurality of routers in virtual router group.VRRP can also minimize unnecessary service disruption.Do not trigger the service that the other router of other low priorities is selected the master control router in master control router normal work period.
The basic operation logic of VRRP is following: the VRRP group of making route backup between the routers of a plurality of operation VRRP that will be in local area network (LAN) are defined as mutually; The designated corresponding IP address corresponding virtual MAC Address of each router in the VRRP group; Externally show as unique; The form of address is 00-00-5E-00-01-[VRID], and VRID is the Digital ID of virtual router, and scope is 1～255.The master control router periodically sends the head of the MAC Address of virtual router as VRRP message, in any case switch like this, what ensure to terminal equipment is the IP and the MAC Address of unique unanimity, has reduced to switch the influence to terminal equipment.The information of used VRRP all adopts the multicast packets of IP to encapsulate, and group address is 224.10.10.118.In different local area, can use same VRRP Router Distinguisher number mapping different address.The issue control range of each virtual router is only limited in the local area network (LAN), and this has guaranteed that VRID can reuse in heterogeneous networks.Just have only the master control router can periodically send the VRRP notification packet in order to reduce network bandwidth consumption.Backup router can not receive VRRP or receives that priority is to start new one after 0 the announcement to take turns the VRRP election in continuous 3 announcements at interval, the backup router of limit priority can be delayed when little at one and change into the master control router.
In the VRRP group route road be to use the VRRP precedence information go to select main road by, VRRP medium priority scope is 0～255.If the interface IP address of the IP address of VRRP router and virtual router is identical, claim that then this virtual router is as the IP address owner in the VRRP group.The IP address owner has limit priority 255 automatically.Priority 0 generally is used in the IP address owner when initiatively abandoning master control person role.The priority limit that can put is 1～254.The equipping rules of priority can be according to speed and cost, router performance and reliability and the setting of other management strategy of link.In the election of master control router, the virtual router of high priority is won, and therefore, if in the VRRP group, the IP address owner is arranged, then it always occurs as the role of master control router.For candidate's router of equal priority, elect in proper order according to the IP address size.VRRP also provides the preemptive priority strategy, should strategy if disposed, just the backup router of high priority can be deprived the master control router of current low priority and become new master control router.
If any router or their local area network (LAN) connection failure, then the master control router is taken over its corresponding operation, and realizes arp reply through the virtual mac address and the IP address that replace it.If the failure of master control router, remaining router can be selected a new master control router, and it has replaced the virtual mac address and the virtual ip address of the master control router of failure, walks around fault point route again.
Concerning the user, can regard a plurality of routers that add the VRRP group in the net as a virtual router.Between master control router and standby router with a kind of " Hello " protocol communication; In time understand the failure state of master control router to guarantee standby router; Owing to disposed VRRP virtual gateway address in the network; When breaking down, virtual router does not change, and main frame still keeps connecting in the network.Network will can not receive the influence of Single Point of Faliure, and router switched recovery time within 5 seconds in the network, and therefore, this is the clear applications that operates on the IP main frame.
Based on virtual route redundancy VRRP, the present invention proposes a kind of backup and SiteServer LBS based on virtual route redundancy, and with reference to shown in Figure 1, this system comprises several entity router ones 0, backup control device 20 and load balancing device 30.
Backup control device 20 is connected to several entity router ones 0 (for the purpose of drawings clear; The annexation of backup control device 20 and several entity router ones 0 is not shown) among the figure; Backup control device 20 uses Virtual Router Redundacy Protocol VRRP to form several virtual router group, and several entity router ones 0 are assigned in the groups of routers, in each virtual router group; Confirm that an entity router is the master control router; Remaining router is a backup router, and the master control router is used for response and transmits packet, and backup router is ready.Each virtual router group comprises at least two entity routers.Each entity router is assigned in one or several virtual router group, can comprise same entity router in the different virtual router group.For example, in the embodiment shown in fig. 1, comprise 4 entity router ones 1,12,13 and 14 altogether.Wherein entity router one 1 and 12 is formed first virtual router group 21, and entity router one 2 and 13 is formed second virtual router group 22, and entity router one 3,14 and 11 is formed the 3rd virtual router group 23.Each virtual router group all comprises two or above entity router.Entity router one 1,12,13 belongs to two different virtual router group respectively.Promptly in different virtual router group, can comprise same entity router.In each virtual router group, all confirm an entity router as the master control router, and remaining entity router is as backup router.For example, the master control router of in virtual router group 21,22 and 23, confirming is respectively entity router one 1,12 and 13.Entity router one 2,13 and 14,11 is then respectively as the backup router in virtual router group 21,22 and 23.In the 3rd virtual router group 23, have two backup routers 14 and 11.According to the present invention, when having two or above backup router in the virtual router group, backup router has priority.In the embodiment shown in fig. 1, entity router one 4 is set and has high priority and entity router one 1 is set and has low priority.Another effect of backup control device 20 is the working condition of each entity router of monitoring and when some entity routers break down, backs up switching.In a virtual router group, when the master control router broke down, the backup router with limit priority upgraded to the master control router after fixed delay, and did not change IP address and MAC Address.For example; For first virtual router group 21; If master control router (entity router) 11 breaks down, backup router (entity router) 12 can upgrade to master control router replacement entity router one 1 after fixed delay, and does not change IP address and MAC Address.For another example; For the 3rd virtual router group 23; If master control router (entity router) 13 breaks down; Backup router (entity router) 14 can at first be upgraded to master control router replacement entity router one 3, and do not changed IP address and MAC Address owing to have high priority after fixed delay.Also break down like sporocarp router one 4, consider to have the backup router (entity router) 11 of low priority again.
Load balancing device 30 is connected to several entity router ones 0 and backup control device 20 (for the purpose of drawings clear; The annexation of load balancing device 30 and several entity router ones 0 is not shown) among the figure; The load balancing device is kept watch on the load flow of each entity router and is set a flow threshold value; When the load flow of an entity router surpasses flow threshold, the load flow of this entity router is shared configuration under it and in the virtual router group as the master control router.Load balancing device 30 carries out load flow and shares the method for configuration and have two kinds: to be the load balancing device give under it load flow mean allocation of entity router and as each the entity router in the virtual router group of master control router for first kind of mode.To be the load balancing device distribute under it load flow that surpasses flow threshold of entity router and as other entity routers in the virtual router group of master control router the second way.If adopt first kind of mode; With second virtual router group 22 is example; Surpass flow threshold if load balancing device 30 monitors the load flow of entity router one 2, then can whole load flows of entity router one 2 have been averaged distribution between two entity router ones 2 under second virtual router group 22 and 13.Because second virtual router group 22 is under the entity router one 2 and as the virtual router group of master control router.If the employing second way; Is example with Third Road by device group 23; The load flow that load balancing device 30 monitors entity router one 3 has surpassed flow threshold; Then only can distribute under it load flow that surpasses flow threshold and as other entity routers in the virtual router group of master control router, the load flow that is about to surpass flow threshold be distributed to entity router one 4 and 11.Because the 3rd virtual router group 23 is under the entity router one 3 and as the virtual router group of master control router.
Introduce an application example of the present invention below again, under IPv6 based on the backup of VRRP and the Application and implementation of SiteServer LBS.The entity router is meant the router of operation VRRP agreement, is physical entity, and the logical target that virtual router group is managed by the VRRP agreement, it plays the effect of a default router (gateway) among the LAN.It externally has a unique MAC Address and IPv6 address, is logical concept; The master control router is the packet that sends to the IPv6 address that virtual router binds, and specifically bears the forwarding task by the master control router, and is responsible for replying the neighbor request of the IPv6 address that virtual router is bound.Backup router is the group object router to the master control router backup.One group object router collaborative work constitutes a virtual router jointly.This virtual router externally shows as a router logic with unique fixedly IPv6 address and MAC Address.Be in the role that router in the same VRRP group has two kinds of mutual exclusions: master control router and backup router, there is and has only a router that is in the master control role in the VRRP group, can there be one or more to be in backup role's router.The VRRP agreement uses selection strategy from groups of routers, to select one as master control, and what responsible neighbours found N D request replys and transmit the IP packet, and other router in the group is in Status of Backups.When breaking down by certain reason master control router, backup router can several seconds the time delay and upgrade to the master control router, the default time interval is 3s, this is a parameter that can be provided with by the user.When " init state ", the entity router mainly is to wait for " startup incident ", and is transformed into the different working state according to the different parameters that receives.When " major state ", this entity router becomes the master control router, is responsible for virtual router and transmits data.When the router that is in " major state " receives that when stopping incident, system will turn back to " init state ".In being in contention mode, when " major state " router is received than the high VRRP packets of information of local first rank, router will change " Status of Backups " into from " major state ".The main task that is in the entity router under " Status of Backups " is to detect the state and the validity of master control router, and when the router that is in " Status of Backups " is received the incident of stopping, system will turn back to " initialization " state.When " Status of Backups " router did not receive the VRRP message of " major state " router in official hour, router will change " major state " into from " Status of Backups " automatically.Each VRRP virtual router all has 48 bit mac addresses of IEEE 802 forms, and the master control router adopts this address as source MAC when sending periodicity VRRP message.Virtual router is that virtual router identifier VRID (Virtual Router IDentifier) and the one group of IPv6 address through it defines, and wherein the scope of VRID is 0～255.This virtual router externally shows as unique virtual mac address; The form of address is 00-00-5E-00-XX-[VRID] (MAC Address space IANA does not wherein confirm that also the address space among the IPv4 is that 00-00-5E-00-01-00 is to 00-00-5E-00-01-FF).Like this, in any case switch, what ensure to terminal equipment is unique IPv6 and MAC Address, has reduced the influence of address switchover to terminal equipment.VRRP announces (advertisement), and the message of other UNKNOWN TYPE will be abandoned by the entity router.For reduce network bandwidth consumption, just have only the master control router can periodically send the VRRP notification packet.Backup router can not receive VRRP or receives that priority is to start new one after 0 the announcement to take turns the VRRP election in continuous 3 announcements at interval.The protocol information of VRRP transmits through the multicast datagram of IPv6, and therefore, the multiple access lan technology of any support IPv6 multicast can be realized VRRP.The packet of VRRP is to be encapsulated in the packet of IPv6, and they are sent to the IPv6 multicast address of distributing to VRRP.This form by the VRRP IPv6 multicast address that IANA distributes is FF02:0:0:0:0:0:XXXX:XXXX.In the VRRP groups of routers, according to priority elect the master control router, VRRP agreement medium priority scope is 0～255.If the interface IP address of the IP address of entity router and virtual router is identical, claim that then this virtual router is the IP address owner in the VRRP group.The IP address person of having has limit priority automatically: 255.Priority 0 generally is used in when the IP address owner initiatively abandons master control router role and uses.Configurable priority limit is 1～254.The equipping rules of priority can be according to speed and cost, router performance and reliability and the setting of other management strategy of link.In the election of master control router, the entity router of high priority becomes the master control router.Therefore, if in the VRRP group, the IP address owner is arranged, then it always occurs as the role of master control router.If do not have the IP address owner in the group, for candidate's router of equal priority, according to the size decision master control router of IP address.VRRP also provides the preemptive priority strategy, should strategy if disposed, and the VRRP router of high priority adds this group when having more, just it can be deprived the master control router of current low priority and become new master control router.
Backup and SiteServer LBS based on virtual route redundancy of the present invention utilizes Virtual Router Redundacy Protocol VRRP to realize effectively improving the operating efficiency and the job stability of router in mutual backup between several entity routers and the equal ability of load.
Claims (7)
1. backup and SiteServer LBS based on a virtual route redundancy is characterized in that, comprising:
Several entity routers;
Backup control device is connected to said several entity routers, and said backup control device uses Virtual Router Redundacy Protocol to form several virtual router group; Several entity routers are assigned in the groups of routers; In each virtual router group, confirm that an entity router is the master control router, remaining router is a backup router; The master control router is used for response and transmits packet, and backup router is ready;
The load balancing device; Be connected to said several entity routers and said backup control device; The load balancing device is kept watch on the load flow of each entity router and is set a flow threshold value; When the load flow of an entity router surpasses flow threshold, the load flow of this entity router is shared configuration under it and in the virtual router group as the master control router.
2. backup and SiteServer LBS based on virtual route redundancy as claimed in claim 1 is characterized in that,
Each virtual router group comprises at least two entity routers.
3. backup and SiteServer LBS based on virtual route redundancy as claimed in claim 2 is characterized in that,
Each entity router is assigned in one or several virtual router group, can comprise same entity router in the different virtual router group.
4. backup and SiteServer LBS based on virtual route redundancy as claimed in claim 2 is characterized in that,
When having two or above backup router in the virtual router group, backup router has priority.
5. backup and SiteServer LBS based on virtual route redundancy as claimed in claim 4 is characterized in that,
In a virtual router group, when the master control router broke down, the backup router with limit priority upgraded to the master control router after fixed delay, and did not change IP address and MAC Address.
6. backup and SiteServer LBS based on virtual route redundancy as claimed in claim 1 is characterized in that,
Said load balancing device is given the load flow mean allocation of entity router under it and as each the entity router in the virtual router group of master control router.
7. backup and SiteServer LBS based on virtual route redundancy as claimed in claim 1 is characterized in that,
Said load balancing device is distributed to the load flow that surpasses flow threshold of entity router under it and as other entity routers in the virtual router group of master control router.
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| CN2010105807413A CN102571527A (en) | 2010-12-09 | 2010-12-09 | Backup and load balancing system based on virtual router redundancy |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105245429A (en) * | 2015-11-10 | 2016-01-13 | 厦门雅迅网络股份有限公司 | Device and method for realizing high-capacity request forwarding in vehicle-mounted terminal monitoring |
| WO2016112484A1 (en) * | 2015-01-12 | 2016-07-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for router maintenance |
| CN106357429A (en) * | 2016-08-29 | 2017-01-25 | 广州西麦科技股份有限公司 | Data processing method and system |
| CN107222514A (en) * | 2016-03-22 | 2017-09-29 | 阿里巴巴集团控股有限公司 | A kind of carrying method and system |
| CN111988220A (en) * | 2020-08-14 | 2020-11-24 | 山东大学 | Multi-target disaster backup method and system among data centers based on reinforcement learning |
| CN113826363A (en) * | 2019-03-27 | 2021-12-21 | 亚马逊技术有限公司 | Consistent routing advertisements between redundant controllers in a global network access point |
| US11343137B2 (en) | 2019-08-23 | 2022-05-24 | Cisco Technology, Inc. | Dynamic selection of active router based on network conditions |
| CN117395189A (en) * | 2023-12-08 | 2024-01-12 | 新华三技术有限公司 | Routing processing method and device |
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- 2010-12-09 CN CN2010105807413A patent/CN102571527A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016112484A1 (en) * | 2015-01-12 | 2016-07-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for router maintenance |
| US10257021B2 (en) | 2015-01-12 | 2019-04-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for router maintenance |
| CN105245429A (en) * | 2015-11-10 | 2016-01-13 | 厦门雅迅网络股份有限公司 | Device and method for realizing high-capacity request forwarding in vehicle-mounted terminal monitoring |
| CN107222514A (en) * | 2016-03-22 | 2017-09-29 | 阿里巴巴集团控股有限公司 | A kind of carrying method and system |
| CN106357429A (en) * | 2016-08-29 | 2017-01-25 | 广州西麦科技股份有限公司 | Data processing method and system |
| CN106357429B (en) * | 2016-08-29 | 2019-08-27 | 广州西麦科技股份有限公司 | A kind of data processing method and system |
| CN113826363A (en) * | 2019-03-27 | 2021-12-21 | 亚马逊技术有限公司 | Consistent routing advertisements between redundant controllers in a global network access point |
| CN113826363B (en) * | 2019-03-27 | 2023-08-22 | 亚马逊技术有限公司 | Consistent route advertisement between redundant controllers in a global network access point |
| US11343137B2 (en) | 2019-08-23 | 2022-05-24 | Cisco Technology, Inc. | Dynamic selection of active router based on network conditions |
| CN111988220A (en) * | 2020-08-14 | 2020-11-24 | 山东大学 | Multi-target disaster backup method and system among data centers based on reinforcement learning |
| CN117395189A (en) * | 2023-12-08 | 2024-01-12 | 新华三技术有限公司 | Routing processing method and device |
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Application publication date: 20120711 |