CN105847143A - VRRP (virtual router redundancy protocol)-based load balancing method and system - Google Patents
VRRP (virtual router redundancy protocol)-based load balancing method and system Download PDFInfo
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- CN105847143A CN105847143A CN201610393276.XA CN201610393276A CN105847143A CN 105847143 A CN105847143 A CN 105847143A CN 201610393276 A CN201610393276 A CN 201610393276A CN 105847143 A CN105847143 A CN 105847143A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
- H04L45/745—Address table lookup; Address filtering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
- H04L47/125—Avoiding congestion; Recovering from congestion by balancing the load, e.g. traffic engineering
Abstract
The invention belongs to the computer network technical field and relates to a VRRP (virtual router redundancy protocol)-based load balancing method and system. The system comprises a master device, at least one standby device and at least one host; the master device and the at least a standby device have with the same virtual physical addresses and virtual IP address; the master device is used for collecting physical addresses corresponding to each host and writing the physical addresses into an address information table; the master device is also used for allocating a part of or all physical addresses in the address information table to different standby devices so as to complete load balance allocation; and the standby devices are used for processing data packets sent by hosts corresponding the allocated physical addresses after receiving the physical addresses allocated by the master device. With the VRRP-based load balancing method and system provided by the embodiments of the invention adopted, load balance can be achieved, and all the hosts only need to be configured with the same gateway, and therefore, configuration is simple, and the ability of the hosts to enable functions such as an ARP (address resolution protocol) protection or binding function is not affected, and the method and system can still work in devices which cannot process free ARP can work normally.
Description
Technical field
The present invention relates to technical field of the computer network, particularly to a kind of load-balancing method based on VRRP and system.
Background technology
At Virtual Router Redundacy Protocol (Virtual Router Redundancy
Protocol, be called for short VRRP) VRRP(Virtual Router Redundancy Protocol) and standard agreement pattern in, only main equipment (Master, usually router) can E-Packet, and stand-by equipment (Backup) is in listening state, it is impossible to E-Packet.Although creating multiple backup group can realize the load balancing between multiple router, but the main frame in LAN (HOST) needing to arrange different gateways, adds the complexity of configuration.
VRRP load-sharing mode (being called for short VRRPE) is on the basis of virtual gateway redundant backup function, adds load-balancing function, it is achieved that Master and the Backup router in same backup group all E-Packets.But current VRRP load-sharing mode requires that main frame can not open address resolution protocol (Address Resolution
Protocol, is called for short ARP) bind or safeguard function, and in some do not process the facility environment of gratuitous ARP, cause VRRP fault.
Summary of the invention
It is an object of the invention to improve the deficiency in the presence of prior art, it is provided that a kind of load-balancing method based on VRRP and system.
In order to realize foregoing invention purpose, embodiments provide techniques below scheme:
A kind of SiteServer LBS based on VRRP, has identical virtual physical address and virtual ip address including a main equipment, at least one stand-by equipment and at least one main frame, described main equipment and at least one stand-by equipment described；
Described main equipment is for collecting the physical address that each main frame at least one main frame described is corresponding, by physical address writing address information table corresponding for each main frame；It is additionally operable to the part or all of physical address assignments in described address information table to different stand-by equipments, completes load balancing distribution；
Described stand-by equipment, for after the physical address receiving the distribution of described main equipment, processes the packet that main frame corresponding to the physical address distributed sends.
The embodiment of the present invention additionally provides a kind of load-balancing method based on VRRP, it is applied to SiteServer LBS based on VRRP, described system includes a main equipment, at least one stand-by equipment and at least one main frame, described main equipment and at least one stand-by equipment described have identical virtual physical address and virtual ip address, and described method includes:
Described main equipment collects the physical address that each main frame at least one main frame described is corresponding, by physical address writing address information table corresponding for each main frame；
Part or all of physical address assignments in described address information table is given different stand-by equipments by described main equipment, completes load balancing distribution.
Compared with prior art, beneficial effects of the present invention: the load-balancing method based on VRRP of embodiment of the present invention offer and system, owing to described main equipment and at least one stand-by equipment described have identical virtual physical address and virtual ip address, main frame would know that the physical address of all stand-by equipments when inquiring main equipment first, main equipment need not again inform the physical address of all of stand-by equipment, i.e. need not be refreshed the arp table of main frame by arp, even if so main frame opens the function preventing from being refreshed arp, or do not support to receive the main frame of free arp, load-balancing function also can normal operation.
Accompanying drawing illustrates:
The structural representation of the SiteServer LBS based on VRRP that Fig. 1 provides for the embodiment of the present invention.
The flow chart of the load-balancing method based on VRRP that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with test example and detailed description of the invention, the present invention is described in further detail.But this should not being interpreted as, the scope of the above-mentioned theme of the present invention is only limitted to below example, and all technology realized based on present invention belong to the scope of the present invention.
Refer to Fig. 1, the SiteServer LBS based on VRRP that the embodiment of the present invention provides, including a main equipment, at least with stand-by equipment with at least with a main frame, described main equipment and at least one stand-by equipment described have identical virtual physical address and virtual ip address.
As it is shown in figure 1, in the SiteServer LBS based on VRRP of embodiment of the present invention offer, main equipment and stand-by equipment are router, and Router A is main equipment, and Router B, Router C are all stand-by equipments.In Router A, Router B, Router C, who is as main equipment, and who is as stand-by equipment, and its way to elect is identical with VRRP mode standard, i.e. standard VRRP (rfc
2338) Master election be according to priority, priority big as Master, if priority size is identical, according to real IP, real IP is the most then as Master.Stand-by equipment can be at least one, in the present embodiment, is only illustrated as a example by two stand-by equipments.With 192.168.0.1 as gateway, this gateway is corresponding with physical address (MAC) 00-00-5e-00-01-01, then Router A, Router B, the virtual ip address of Router C are 192.168.0.1, Router A, Router B, the virtual physical address of Router C are 00--00-5e-00-01-01.Having four main frames in the system that the embodiment of the present invention provides, the MAC Address that four main frames are corresponding is respectively as follows: 08--00-27-76-8f-61,08--00-27-76-8f-62,08--00-27-76-8f-63,08--00-27-76-8f-64.
Main equipment collects (really) physical address that each main frame at least one main frame described is corresponding, by in physical address writing address information table (the HOST pond shown in Fig. 1) corresponding for each main frame, the most in the present embodiment, the MAC Address that Router A four main frames (HOST1, HOST2, HOST3, HOST4) of collection are the most corresponding: 08--00-27-76-8f-61,08--00-27-76-8f-62,08--00-27-76-8f-63,08--00-27-76-8f-64, by these four MAC Address write HOST ponds.When implementing, can be that four main frames send ARP request to Router A respectively, this ARP request i.e. includes MAC Address；The virtual mac address of main frame when replying this ARP request, is then informed four main frames by main frame.Owing to the virtual mac address of Router B, Router C is identical with Router A, therefore four main frames obtain the virtual mac address of all of stand-by equipment the most accordingly.Main frame is when sending packet by Router A, and Router A can also obtain the MAC Address of main frame from this packet.The ARP request of All hosts is all processed by main equipment, and stand-by equipment is not replied.
It is different from traditional VRRP equally loaded mode: the MAC Address of each stand-by equipment is different, main equipment is after the MAC Address knowing all of stand-by equipment, need to refresh the ARP table of main frame, to inform the MAC Address of each stand-by equipment of main frame, therefore it is required that main frame can not open ARP fire wall or ARP binding function.
The present invention creatively uses main equipment and all of stand-by equipment to fictionalize same MAC Address, main equipment then need not refresh the ARP table of main frame, therefore, main frame has only to configure same gateway, configuration is simple, and do not affect main frame and open ARP fire wall or ARP binding function, even and if also can normally work in some can not process the equipment of gratuitous ARP in time.
After the physical address collecting all of main frame, part or all of physical address assignments in described address information table is given each stand-by equipment by main equipment, complete load balancing distribution, i.e. allow stand-by equipment serve part or all of main frame, process the packet that main frame sends.
It should be noted that, the load balancing related in the present embodiment is not necessarily referring to main equipment and each stand-by equipment mean allocation main frame (host number is also impossible to realize mean allocation time inconsistent with the total quantity of stand-by equipment and main equipment), and refer to that the main equipment in same backup group and stand-by equipment all process the packet that main frame sends, rather than only processed by main equipment, stand-by equipment is only in listening state.
Main equipment, when to each stand-by equipment allocated physical address, can directly distribute, it is also possible to distributes according to the resource state information that stand-by equipment sends.As the resource state information according to stand-by equipment distributes, then stand-by equipment can shift to an earlier date the resource state information sending self to main equipment.Resource state information can include such as broadband, CPU, running memory, distribute host number etc. and embody standby equipment and undertake the information of load capacity, in order to the ability that main equipment undertakes load according to each stand-by equipment carrys out allocated physical address.
Whole physical address assignments in described address information table can be given different stand-by equipment (such as serviced at main equipment host number more in the case of) by main equipment, part physical address can also be distributed to different stand-by equipments, different stand-by equipments given by i.e. distribution portion main frame, each stand-by equipment serve corresponding main frame.
Part or all of physical address assignments in address information table can have various ways to different stand-by equipments by main equipment, such as, when the quantity of the part or all of physical address in the information table of address is less than the quantity of stand-by equipment, then directly to part stand-by equipment allocated physical address, each stand-by equipment in described part stand-by equipment can distribute multiple physical address, more preferably, it is also possible to be respectively allocated a physical address.When the quantity of the part or all of physical address in the information table of address is more than the quantity of stand-by equipment, main equipment first distributes a physical address to each stand-by equipment, then further according to the host number of distribution in the resource state information of each stand-by equipment, preferentially distribute to remaining physical address distribute host number relatively little of stand-by equipment.
Such as, in system shown in Fig. 1, Router A collects four physical address: be written with aforementioned four physical address in 08--00-27-76-8f-61,08--00-27-76-8f-62,08--00-27-76-8f-63,08--00-27-76-8f-64, i.e. address information table (HOST pond).08--00-27-76-8f-63,08--00-27-76-8f-64 are respectively allocated to Router B, Router C by Router A, the packet that main frame corresponding to 08--00-27-76-8f-63,08--00-27-76-8f-64 sends is processed respectively by Router B, Router C, remaining 08--00-27-76-8f-61,08--00-27-76-8f-62 distribute to oneself, by oneself processing the packet that main frame corresponding to 08--00-27-76-8f-61,08--00-27-76-8f-62 sends.
Stand-by equipment, after the physical address receiving the distribution of described main equipment, stores the physical address distributed；Described stand-by equipment is when network interface receives the packet that main frame sends, if physical address corresponding to this main frame stores, then processes the packet that this main frame sends, otherwise abandons the packet that this main frame sends.
Main equipment is when network interface receives the packet that main frame sends, if physical address corresponding to this main frame is the physical address distributing to oneself in described address information table, then processes the packet that this main frame sends, otherwise abandons the packet that this main frame sends.
Such as, in system shown in Figure 1, Router B, when receiving the packet that main frame corresponding for 08--00-27-76-8f-63 sends, processes (such as forwarding) this main frame and sends out the packet being；If receiving the packet that main frame corresponding for 08--00-27-76-8f-61 sends, the most directly abandon this packet.Router A, when receiving the packet that main frame corresponding for 08--00-27-76-8f-61 sends, processes (such as forwarding) this main frame and sends out the packet being；If receiving the packet that main frame corresponding for 08--00-27-76-8f-64 sends, the most directly abandon this packet.
The SiteServer LBS based on VRRP that the embodiment of the present invention provides, is possible not only to realize the packet that load balancing, main equipment and stand-by equipment all forward main frame to send, and all of main frame has only to configure same gateway, configures simple to operate；On the other hand, owing to need not refresh the ARP table of main frame, therefore when realizing load-balancing function, do not affect main frame and open ARP fire wall or ARP binding function, even and if can normally work in some can not process the equipment of gratuitous ARP in time yet.
Refering to Fig. 2, the load-balancing method based on VRRP that the embodiment of the present invention provides, it is applied to the system that the invention described above embodiment provides, said method comprising the steps of:
Step S101: main equipment collects the physical address that each main frame is corresponding, by physical address writing address information table corresponding for each main frame.
The mode of the physical address that main equipment collection main frame is corresponding, it may be that main frame sends ARP request to main equipment, extracts the physical address that this main frame is corresponding from this ARP request；Or extract, from the packet that main frame sends, the physical address that this main frame is corresponding.
Step S102: each stand-by equipment sends the resource state information of self to main equipment.
Part or all of physical address assignments, after collecting the physical address that all of main frame is corresponding, directly can be given each stand-by equipment by main equipment.In order to realize load average distribution as much as possible, more preferably, main equipment is allocated according to the load capacity that each stand-by equipment is afforded, i.e. it is allocated according to the resource state information of each stand-by equipment, therefore, before main equipment distributes, each stand-by equipment needs to send the resource state information of self to main equipment.
Step S103: the resource state information that main equipment sends according to each stand-by equipment, gives different stand-by equipments by the part or all of physical address assignments in address information table, completes load balancing distribution.
It is assigned to the stand-by equipment of physical address after receiving the packet that main frame corresponding to distributed physical address sends, processes this packet, the packet sent if not the main frame that the physical address distributed is corresponding, the most directly give up.
The load-balancing method based on VRRP that the embodiment of the present invention provides, can realize route redundancy, can avoid ARP spoofing attack, reduce redundant fault produced by the dependence that gratuitous ARP is processed by some equipment when not having gratuitous ARP；Host Security can be ensured on the basis of realizing load balancing distribution, not affect main frame and open the function such as arp fire wall or arp binding.
All features disclosed in this specification, or disclosed all methods or during step, in addition to mutually exclusive feature and/or step, all can combine by any way.
Any feature disclosed in this specification (including any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be by other equivalences or there is the alternative features of similar purpose replaced.I.e., unless specifically stated otherwise, an example during each feature is a series of equivalence or similar characteristics.
Claims (10)
1. a SiteServer LBS based on VRRP, it is characterised in that include that a main equipment, at least one stand-by equipment and at least one main frame, described main equipment and at least one stand-by equipment described have identical virtual physical address and virtual ip address；
Described main equipment is for collecting the physical address that each main frame at least one main frame described is corresponding, by physical address writing address information table corresponding for each main frame；It is additionally operable to the part or all of physical address assignments in described address information table to different stand-by equipments, completes load balancing distribution；
Described stand-by equipment, for after the physical address receiving the distribution of described main equipment, processes the packet that main frame corresponding to the physical address distributed sends.
System the most according to claim 1, it is characterized in that, described stand-by equipment is additionally operable to send resource state information to described main equipment, the resource state information that described main equipment sends according to each stand-by equipment, gives different stand-by equipments by the part or all of physical address assignments in described address information table.
System the most according to claim 2, it is characterized in that, described main equipment is when allocated physical address, the resource state information that described main equipment sends according to each stand-by equipment, different stand-by equipments is distributed in part physical address in described address information table, gives oneself by remaining physical address assignments.
System the most according to claim 3, it is characterized in that, when the quantity of described part physical address is more than the quantity of described stand-by equipment, described main equipment is respectively allocated a physical address to each stand-by equipment from described part physical address, further according to the host number of distribution in the resource state information of each stand-by equipment, preferentially distribute to distribute host number relatively little of stand-by equipment by remaining physical address in described part physical address.
System the most according to claim 3, it is characterized in that, described main equipment is when network interface receives the packet that main frame sends, if the physical address that this main frame is corresponding is the physical address distributing to oneself in described address information table, then process the packet that this main frame sends, otherwise abandon the packet that this main frame sends.
System the most according to claim 1, it is characterised in that described stand-by equipment, after the physical address receiving the distribution of described main equipment, stores the physical address distributed；Described stand-by equipment is when network interface receives the packet that main frame sends, if physical address corresponding to this main frame stores, then processes the packet that this main frame sends, otherwise abandons the packet that this main frame sends.
7. a load-balancing method based on VRRP, it is characterized in that, it is applied to SiteServer LBS based on VRRP, described system includes a main equipment, at least one stand-by equipment and at least one main frame, described main equipment and at least one stand-by equipment described have identical virtual physical address and virtual ip address, and described method includes:
Described main equipment collects the physical address that each main frame at least one main frame described is corresponding, by physical address writing address information table corresponding for each main frame；
Part or all of physical address assignments in described address information table is given different stand-by equipments by described main equipment, completes load balancing distribution.
Method the most according to claim 7, it is characterized in that, described main equipment collects the physical address information that each main frame at least one main frame described is corresponding, including: described main equipment receives the packet that each main frame at least one main frame described sends, and extracts the physical address that the main frame of this packet of transmission is corresponding from described packet.
Method the most according to claim 7, it is characterised in that different stand-by equipments is distributed in the part physical address in described address information table by described main equipment, including:
The resource state information that described main equipment sends according to each stand-by equipment, distributes to different stand-by equipments by the part physical address in described address information table, gives oneself by remaining physical address assignments.
Method the most according to claim 9, it is characterised in that the resource state information that described main equipment sends according to each stand-by equipment, distributes to different stand-by equipments by the part physical address in described address information table, including:
When the quantity of described part physical address is more than the quantity of described stand-by equipment, described main equipment is respectively allocated a physical address to each stand-by equipment from described part physical address, then according to the distribution host number in the resource state information of each stand-by equipment, preferentially distribute to remaining physical address in described part physical address distribute the stand-by equipment that host number is few.
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| WO2023093422A1 (en) * | 2021-11-26 | 2023-06-01 | 中兴通讯股份有限公司 | Signaling transmission method, vrrp networking system, first network entity device and storage medium |
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