CN105515979B - Ospf OSPF inter-network equilibrium retransmission method and system - Google Patents
Ospf OSPF inter-network equilibrium retransmission method and system Download PDFInfo
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- CN105515979B CN105515979B CN201511005470.8A CN201511005470A CN105515979B CN 105515979 B CN105515979 B CN 105515979B CN 201511005470 A CN201511005470 A CN 201511005470A CN 105515979 B CN105515979 B CN 105515979B
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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
- H04L45/42—Centralised 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
- H04L45/12—Shortest path evaluation
- H04L45/126—Shortest path evaluation minimising geographical or physical path length
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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
- H04L45/60—Router architectures
-
- 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 embodiment of the present invention provides a kind of ospf OSPF inter-network equilibrium retransmission method and system, this method comprises: routing device receives the user request information after parsing；The routing device is according to ospf protocol, the port information of user request information and the routing device, forwarding data are polled to each dispatch server in different segment, physical link between routing device and each dispatch server is assigned on the dispatch server in different segment, and determines that target physical links corresponding target dispatch server；Target dispatch server forwards user request information to the back-end server cluster in same Intranet；The back-end server cluster returns result to the user.The constantly improve load balancing system concurrent capability of this method energy, continues High Availabitity ability, improves forwarding efficiency, lateral cross-network segment is facilitated to extend.
Description
Technical field
The present invention relates to three-tier switch OSPF, (Open Shortest Path First, open type shortest path are excellent
First), and in particular to ospf OSPF inter-network equilibrium retransmission method and system.
Background technique
The building form of service cluster deployment at present includes following several: single software composition, and relatively common is
Keepalived (it is one and is similar to layer3, the software of 4&7 exchanging mechanism)+LVS (Linux Virtual Server,
Linux virtual server) or heartbeat (it is a component part of Linux-HA engineering, it realizes a High Availabitity
Group system)+LVS composition；Single hardware composition, relatively common is F5 or other load-balancing devices, cable direct-connected device；
Software combines composition with hardware, and load balancing hardware device adds independently developed software support.If using DR with upper type
(Direct Routing, direct routing) mode can only carry out cluster deployment using the same network segment, in the forwarding of scheduler
There is also the limitations of biggish bottleneck in quantity.
Fig. 1 is the schematic diagram of the conventional load equilibrium naive model of the prior art.As shown in Figure 1, conventional load equilibrium tune
Degree machine can only be active-standby mode, dispatch layer can not be extending transversely, can not cross-network segment extension.When using DR mode, user is accessed
Domain name, domain name reach dispatcher VIP (Virtual IP Address, virtual ip address) after parsing, and dispatcher will request
According to poll rule-based scheduling to a certain server of LVS cluster, number of users is directly returned to by VIP by a certain server
According to.When access request reaches certain transfer amount, bottleneck is present in dispatcher at this time.
In realizing process of the present invention, at least there are the following problems in the prior art for inventor's discovery: the prior art is obstructed
Crossing tripartite's exploitation cannot achieve that across computer room cluster using DR mode does load balancing, DR mode is not available different segment and does poll
Forwarding, scheduler are difficult to break through the limitation of own net hardware forwarding rate.
Summary of the invention
The embodiment of the present invention provides a kind of ospf OSPF inter-network equilibrium retransmission method and system, with reality
It can now be extended again with cross-network segment using the advantage of load balancing DR.
On the one hand, the embodiment of the invention provides a kind of ospf OSPF inter-network equilibrium retransmission method,
Comprising:
Routing device receives the user request information after parsing；
The routing device is according to ospf protocol, the port information of user request information and the routing device, to being in
Each dispatch server in different segment is polled forwarding data, by the object between the routing device and each dispatch server
On the dispatch server that reason link is assigned in different segment, and determine that target physical links corresponding target dispatch server；
Target dispatch server forwards user request information to the back-end server cluster in same Intranet；
The back-end server cluster returns result to the user.
On the other hand, a kind of ospf OSPF inter-network equilibrium repeater system is also provided comprising:
Routing device, for receiving the user request information after parsing, according to ospf protocol, user request information and described
The port information of routing device is polled forwarding data to each dispatch server in different segment, by the routing
Physical link between equipment and each dispatch server is assigned on the dispatch server in different segment, and determines target physical
Link corresponding target dispatch server；
The dispatch server of multiple cross-network segments, for after being targeted dispatch server in same Intranet
Back-end server cluster forwards user request information；
Multiple back-end server clusters, each back-end server cluster are in the Intranet of respective dispatch server, are used for
Return result to the user.
Above-mentioned technical proposal has the following beneficial effects:
Above-mentioned technical proposal provided in an embodiment of the present invention can be with using L3 Switching OSPF function, scheduler and LVS
It is in scheduler or LVS server across computer room and same network segment progress DR poll access.The advantage of load balancing DR can be used
It can be extended again with cross-network segment, extending transversely more convenient, framework is easier, and service is more stable, and forwarding data volume is that conventional load is equal
5-10 times of weighing apparatus.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the schematic diagram of the conventional load equilibrium naive model of the prior art；
Fig. 2 is the flow chart of the ospf OSPF inter-network equilibrium retransmission method of the embodiment of the present invention one；
Fig. 3 is the system architecture schematic diagram of the conventional load equilibrium combination ospf model of the embodiment of the present invention two.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
Fig. 2 is a kind of flow chart of ospf OSPF inter-network equilibrium retransmission method of the present embodiment, such as
Shown in Fig. 2 comprising following steps:
Step 110: routing device receives the user request information after parsing；
Step 120: routing device is according to the port information of ospf protocol, user request information and routing device, to being in
Each dispatch server in different segment is polled forwarding data, by the physics chain between routing device and each dispatch server
It connects on the dispatch server being assigned in different segment, and determines that target physical links corresponding target dispatch server；
Step 130: target dispatch server requests letter to the rear end cluster of servers forwarding user in same Intranet
Breath；
Step 140: back-end server cluster returns result to user.
It is described in detail below in conjunction with the system architecture diagram of Fig. 3.As shown in figure 3, the load of the present embodiment combination OSPF
Equilibrium, user access domain name, and domain name reaches routing device (such as three-tier switch) after parsing, at this time three-tier switch
(or routing device) can pass through port address to raw address, routing device and destination address, port according to ospf protocol
Hash (cryptographic Hash or hashed value) is polled forwarding data to each dispatcher and (refers to the various data on network, such as web, data
Library etc.), the physical link between routing device and dispatch server is assigned to dispatch server in different segment, and (i.e. load is equal
Weigh dispatcher) on, dispatch server passes through the forwarding request of Intranet rear end server, back-end server (i.e. LVS Cluster Service
Device) return result to user.To reach cross-network segment, the mode across computer room load balancing.It can be according to road compared with traditional mode
Dilatation dispatcher is carried out by the equivalent route number of entries supported.
Specifically, OSPF sets cost value by calculating or by hand to determine the poll rule of dispatcher, dispatcher
It with back end clusters real server is polled by keepalived software.Poll is to improve concurrent capability, OSPF
Corresponding poll rule or manual setting cost value are judged by calculating to be polled rule, so as to greatly improve clothes
The concurrent capability of business.
Specifically, above-mentioned target physical link can be selected in the following way:
Firstly, between routing device and the dispatch server being polled while study network segment being arranged and broadcasts (study net
Section is that whole system needs IP segment limit to be used), identical, polling server end is arranged in routing device end and polling server end
For software setting.
Then, after routing device in learning system according to routing and existing, according to OSPF algorithm hash and target port
Determine that this time connection is forwarded by which physical link, to reach keepalived dispatcher.Alternatively, routing device
After routing and existing in learning system, determine this time which physics chain connection passes through according to setting cost value by hand
Road is forwarded.Equal value is set by cost value, the balanced poll between keepalived dispatcher may be implemented.
In the present embodiment, this set of environments is disposed, route learning algorithm is preferably disposed in dispatcher, which is used for
The intercommunication of each dispatch server in different segment.
In the present embodiment, setting interchanger need the port OSPF start route function, and configuration of IP and for route learn
The OSPF of habit learns network segment.The present embodiment uses the dispatch server (dispatcher) of more different segments as routing, configuration
At route mode, more dispatchers configure the same VIP, and three-layer routing equipment can be dispatched according to the route spoofing software of prepackage
On rule-based scheduling to different dispatchers, to realize that poll loads.It can make conventional load balanced mode in this way
It is more easily and efficiently extending transversely to different segment, solve the problems, such as that the extension of conventional load balance dispatching machine is difficult.
In the present embodiment, load balance scheduling software, therefore the scheduling are respectively mounted on each dispatcher (dispatch server)
Machine is load balance scheduling server；
In the present embodiment, intranet server cluster in rear end preferably disposes LVS, for example, by using DR mode.
As optional embodiment, a whole set of framework can be with flexible, if using NAT (Network Address
Translation, network address translation) mode, each Intranet cluster all can serve as the scheduling of any one dispatch server
Pond.
Above-mentioned OSPF inter-network equilibrium retransmission method is further described below by way of specific example:
Step 1, user access example.com, and DNS translates domain names into as 202.106.7.109.
Step 2,202.106.7.109 reach the total router of website computer room and (support ospf router that 3 network segment cost are arranged
It equal to 2, and routes and supports maximum 16 equivalent routes).Router is by 202.106.7.109NAT 192.168.8.8 (Intranet
The address VIP).
Step 3, router by searching for oneself network segment that can learn of statement include 10.210.12.0/24,
172.16.16.0/24,192.168.8.0/24 states to learn in 3 keepalived dispatchers also by Routing Software at this time
Route 10.210.12.0/24,172.16.16.0/24,192.168.8.0/24 network segment.And 3 network segments are intercommunications.
Step 4, keepalived dispatcher server ip be 10.210.12.2,172.16.16.2,192.168.8.2,
It needs that the address 192.168.8.8VIP is arranged in dispatcher.
Step 5, router are polled scheduling according to hash, dispatcher network egress, cost value, and every comes from
192.168.8.8 link is separately dispensed on 10.210.12.2,172.16.16.2,192.168.8.2.
The hyperlink request divided is assigned to lower end server according to corresponding modes by step 6, keepalived dispatcher
Cluster, lower end server are stated network segment there may be before, can also be not present.
Step 7, the request for returning to user by the server for receiving scheduler task later.
Step 8, user obtain data.
The complete multiple spot redundancy of the overall architecture of the present embodiment.The technical solution of the present embodiment can constantly improve load balancing body
It is concurrent capability, continues High Availabitity ability, improves forwarding efficiency, lateral cross-network segment is facilitated to extend.The advantages of above-mentioned technical proposal
It is: 1, extending transversely more convenient；It 2, can across computer room cross-network segment；3, dispatcher single-point is solved；4, dispatcher forwarding is broken through
Maximum performance.
Embodiment two
The present embodiment provides a kind of ospf OSPF inter-network equilibrium repeater systems, to realize side above-mentioned
Method, as shown in figure 3, the system includes:
Routing device 210, for receive parsing after user request information, according to ospf protocol, user request information and
The port information of routing device is polled forwarding data to each dispatch server in different segment, by routing device
Physical link between each dispatch server is assigned on the dispatch server in different segment, and determines target physical link
Corresponding target dispatch server；
The dispatch server 220 of multiple cross-network segments, for after being targeted dispatch server in same
The back-end server cluster of net forwards request；
Multiple back-end server clusters 230, each back-end server cluster are in the Intranet of respective dispatch server, use
In returning result to user.
Specifically, above-mentioned user request information includes raw address and destination address, and the port information of routing device includes end
The hashed value of port address and port.
Specifically, OSPF sets cost value by calculating or by hand to determine the poll rule of dispatcher, dispatcher
It with back end clusters real server is polled by keepalived software.Poll is to improve concurrent capability, OSPF
Corresponding poll rule or manual setting cost value are judged by calculating to be polled rule, so as to greatly improve clothes
The concurrent capability of business.
Further, route learning algorithm is disposed on each dispatch server, to realize each dispatch service in different segment
The intercommunication of device.
Further, which has the port OSPF, which has routing function, and configured with IP and
OSPF learns network segment.The present embodiment uses the dispatch server (dispatcher) of more different segments as routing, is configured to
Route mode, more dispatchers configure the same VIP, and three-layer routing equipment can be dispatched according to the route spoofing software of prepackage and be advised
It is then dispatched in different dispatchers, to realize that poll loads.It can make conventional load balanced mode more in this way
Add easily and efficiently extending transversely to different segment, solves the problems, such as that the extension of conventional load balance dispatching machine is difficult.
Further, which is load balance scheduling server, and the back-end server cluster of Intranet is disposed
Linux virtual server.
The complete multiple spot redundancy of the overall architecture of the present embodiment.The technical solution of the present embodiment can constantly improve load balancing body
It is concurrent capability, continues High Availabitity ability, improves forwarding efficiency, lateral cross-network segment is facilitated to extend.The system is extending transversely more square
Just, can across computer room cross-network segment, also can solve dispatcher single-point, and break through the maximum performance of dispatcher forwarding.
Those skilled in the art will also be appreciated that the various illustrative components, blocks that the embodiment of the present invention is listed
(illustrative logical block), unit and step can by electronic hardware, computer software, or both knot
Conjunction is realized.For the replaceability (interchangeability) for clearly showing that hardware and software, above-mentioned various explanations
Property component (illustrative components), unit and step universally describe their function.Such function
It can be that the design requirement for depending on specific application and whole system is realized by hardware or software.Those skilled in the art
Can be can be used by various methods and realize the function, but this realization is understood not to for every kind of specific application
Range beyond protection of the embodiment of the present invention.Above-described specific embodiment to the purpose of the present invention, technical solution and has
Beneficial effect has been further described, it should be understood that the foregoing is merely a specific embodiment of the invention,
It is not intended to limit the scope of protection of the present invention, all within the spirits and principles of the present invention, any modification for being made equally is replaced
It changes, improve, should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of ospf OSPF inter-network equilibrium retransmission method characterized by comprising
Routing device receives the user request information after parsing, and the routing device has the port OSPF, which has
Routing function, and the OSPF configured with IP and for route learning learns network segment；
The routing device is according to ospf protocol, the port information of user request information and the routing device, by different segment
Dispatch server as routing, forwarding data are polled to each dispatch server in different segment, by the road
It is assigned on the dispatch server in different segment by the physical link between equipment and each dispatch server, and determines object
Reason links corresponding target dispatch server；
Target dispatch server forwards user request information to the back-end server cluster in same Intranet；
The back-end server cluster returns result to the user.
2. the method according to claim 1, wherein the user request information includes raw address and destination
Location, the port information of the routing device include the hashed value of port address and port.
3. the method according to claim 1, wherein on each dispatch server dispose route learning algorithm,
Intercommunication of the learning algorithm for each dispatch server in different segment.
4. the method according to claim 1, wherein the dispatch server be load balance scheduling server,
The back-end server cluster of the Intranet disposes Linux virtual server.
5. a kind of ospf OSPF inter-network equilibrium repeater system characterized by comprising
Routing device, for receiving the user request information after parsing, according to ospf protocol, user request information and the routing
The port information of equipment, by the dispatch server of different segment as routing, to each dispatch server in different segment
Forwarding data are polled, the physical link between the routing device and each dispatch server is assigned in different segment
On dispatch server, and determining that target physical links corresponding target dispatch server, the routing device has the port OSPF,
The port OSPF has routing function, and the OSPF configured with IP and for route learning learns network segment；
The dispatch server of multiple cross-network segments, for after being targeted dispatch server to be in same Intranet rear end
Cluster of servers forwards user request information；
Multiple back-end server clusters, each back-end server cluster are in the Intranet of respective dispatch server, for that will tie
Fruit returns to the user.
6. system according to claim 5, which is characterized in that the user request information includes raw address and destination
Location, the port information of the routing device include the hashed value of port address and port.
7. system according to claim 5, which is characterized in that route learning algorithm is disposed on each dispatch server,
Intercommunication for each dispatch server in different segment.
8. system according to claim 5, which is characterized in that the dispatch server is load balance scheduling server,
The back-end server cluster of the Intranet disposes Linux virtual server.
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| CN107370671B (en) * | 2016-05-13 | 2020-05-15 | 平安科技（深圳）有限公司 | Equivalent routing interaction method and terminal based on SDN network |
| CN111600806B (en) * | 2016-10-27 | 2023-04-18 | 贵州白山云科技股份有限公司 | Load balancing method and device, front-end scheduling server, storage medium and equipment |
| CN112311836A (en) * | 2019-07-31 | 2021-02-02 | 华为技术有限公司 | Method and related device for scheduling service node |
| CN112866107B (en) * | 2021-01-25 | 2023-07-18 | 网宿科技股份有限公司 | IP address notification method, traffic guidance method and network equipment |
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