CN101217465A - A route selecting method for multi-exit server and router - Google Patents

A route selecting method for multi-exit server and router Download PDF

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Publication number
CN101217465A
CN101217465A CNA2007103045790A CN200710304579A CN101217465A CN 101217465 A CN101217465 A CN 101217465A CN A2007103045790 A CNA2007103045790 A CN A2007103045790A CN 200710304579 A CN200710304579 A CN 200710304579A CN 101217465 A CN101217465 A CN 101217465A
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interface
server
request message
list item
route
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CNA2007103045790A
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Chinese (zh)
Inventor
邓巍巍
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Beijing Ruian Technology Co Ltd
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Beijing Ruian Technology Co Ltd
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Priority to CNA2007103045790A priority Critical patent/CN101217465A/en
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Abstract

The invention provides a method and a router for routing of a multi-outlet server. After the server receives a request message from the internet, the invention records the source address of the request message and the corresponding WAN interface when entering the link; the source address of the request message is the network address of the internet client. When the server replies to the client, the WAN interface is taken as the next hop interface to realize routing. Therefore, manual routing configuration is not necessary, the WAN interface where the internet request message enters is taken as the best route of server recovery, so the invention can not only greatly reduce the workload of manual routing configuration by network managers but also ensure that the server replies to the client in the internet according to the best route.

Description

A kind of route selection method of multi-exit server and router
Technical field
The present invention relates to route technology, particularly relate to a kind of method of routing and router of multi-exit server.
Background technology
At present, when certain station server is hosted in certain ISP,, be connected simultaneously with two or more Virtual network operators usually in order to ensure the access speed of user in all regions, the whole nation.That is to say that there is two or more wide area networks (Wide Area Network is called for short WAN) interface in server, each wan interface can enter the Internet by the link of renting from different operators.
In actual applications, because the bandwidth that connects between the different operators network is narrow, the speed that server is replied the Internet client by different wan interfaces is not quite similar.Such as: server has two wan interfaces, and one is the W1 interface, the corresponding A of operator, another is the W2 interface, the corresponding B of operator.If certain client among the A of operator asks server by the W1 interface, reply this client computer if directly insert from the W1 interface, its speed ratio is very fast, can satisfy user's demand for experience; If reply this client computer and insert from the W2 interface, its speed is then slow, and (referring to Fig. 1) is difficult to meet consumers' demand.
In order to guarantee cut-in quality, the route of server adopts the method for manual configuration static routing usually, and next that belongs to certain operator's network segment address in routing table jumped out interface and be set to wan interface that should operator.Like this, during certain client computer in server will be replied this operator's network segment, server is replied directly WAN that should operator is inserted, thereby guarantees the speed and the quality of visit.But, because technology is to adopt the mode of manual configuration now, its configuration effort amount is bigger, and under the situation that network changes, also need to upgrade original routing configuration, its process is more loaded down with trivial details, has increased network manager's workload greatly, is unfavorable for the popularization of server access technology.
Summary of the invention
In view of the deficiency of above-mentioned manual configuration static routing method, first goal of the invention of the present invention is for multi-exit server provides a kind of method of routing, need not manual configuration and realizes best Route Selection.
Second goal of the invention of the present invention provides a kind of router, need not manual configuration and realize the selection of best route.
In order to reach above-mentioned first purpose, the technical scheme that the present invention proposes is: a kind of method of routing of multi-exit server, and this method may further comprise the steps:
A, server receive the request message from wide area network, and the source address of described request message is the network address of client computer;
B, server by utilizing described request message, the network address and this request message of record client computer enter the pairing wan interface of link, when server is replied described client computer, this wan interface are jumped out interface as next, realize the selection of route.
In the such scheme, further comprise after the described step b:
When server continue to send destination address and step when gathering the identical message in the described network address of b, jump out interface according to next of described network address correspondence and message is sent get final product.
In the such scheme, be provided for writing down the network address in advance and jump out the route forwarding table of interface corresponding relation with next, described step b further comprises:
Server is judged the list item that whether has the described network address in the route forwarding table according to the described request message, not, then create new list item, with the source address of described request message and enter the pairing wan interface of link and be recorded in the new establishment list item, this wan interface be described network address correspondence next jump out interface; Be, whether next that then check described network address correspondence jumped out interface consistent with the wan interface that the current request message enters, inconsistent then upgrade this next jump out interface for when the wan interface that advance into; When server sends a reply message, will reply message according to route forwarding table and jump out interface from next of described network address correspondence and send.
In the such scheme, this method further comprises:
When newly creating or refreshing a list item, start the list item age timer, if timing arrives the ageing time that is provided with in advance, the corresponding list item of deletion then.
In the such scheme, if the wan interface of server has disposed network address translation protocol NAT, will reply in message sends from wan interface, this method further comprises:
Handle replying message according to the NAT agreement.
For second goal of the invention of the present invention, the technical scheme that the present invention proposes is:
A kind of router comprises server side Transmit-Receive Unit, the Internet side Transmit-Receive Unit at least, has a plurality of wan interfaces in the described the Internet side Transmit-Receive Unit, corresponding different respectively Virtual network operator links, and this router also comprises:
Route control unit, the Internet side Transmit-Receive Unit receives the request message from wide area network, the source address of route control unit record described request message and the wan interface that enters thereof, when the server side Transmit-Receive Unit is received the answer message of server, this wan interface of route control unit be set to reply message next jump out interface.
In the such scheme, described route control unit further comprises:
The routing table administrative unit is used to store route forwarding table, creates or upgrades list item, and the wan interface that the source address in the request message and request message enter is noted, and this wan interface is next of replying message and jumps out interface.
Judgement unit, whether the route forwarding table that is used for judging the routing table administrative unit exists the list item from the source address of the request message of the Internet side Transmit-Receive Unit, if there is no, then notifies the routing table administrative unit to create new list item; Whether if exist, it is consistent with the wan interface that the current request message enters to check that then corresponding next jumped out interface, inconsistent then notify the routing table administrative unit upgrade this next jump out interface for when the wan interface that advances into.
In the such scheme, described route control unit further comprises:
The list item age timer, each list item that is used for route is transmitted carries out timing, and when arriving the ageing time that is provided with in advance, the corresponding list item of notice routing table administrative unit deletion;
Described routing table administrative unit is further used for: according to the corresponding list item of notice deletion of list item age timer.
In the such scheme, described router further comprises:
Network address translation NAT protocol element is used for the answer message is handled according to the NAT agreement, and the answer message after will handling sends by the Internet side Transmit-Receive Unit.
In sum, the present invention provides a kind of method of routing and router for multi-exit server, the wan interface that can request message enters be set to that server replys message next jump out interface, and at the follow-up destination address server identical that receive when replying message, jump out interface according to next of correspondence and directly send with described request message source address.Like this, router need not manual configuration, but directly utilizes the request message of the Internet side to determine route, not only significantly reduces the workload of network management personnel's manual configuration, and can guarantee that server is according to the client computer in the optimal path answer internet.
Description of drawings
Fig. 1 is the networking schematic diagram of the embodiment of the invention;
Fig. 2 is the route selection method flow chart of the embodiment of the invention;
Fig. 3 is the internal structure schematic diagram of router in the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
Basic thought of the present invention is: the wide area network wan interface that directly adopts the Internet side request message to enter, this wan interface is replied the optimal path of this client computer as server.
The present invention realizes that Route Selection can may further comprise the steps:
Step 1: router receives the request message from the internet, and the source address of described request message is the network address of the Internet client;
Step 2: router utilizes the described request message, and it is that next of answer message of described request message source address jumped out interface that the wan interface that request message enters is set to destination address, realizes the selection of route.
Among the present invention, router has two or more wan interfaces, the link of the corresponding different operators of each wan interface.When the local network server will be replied in the internet certain client computer, because not as the good route of prior art configured in advance, router can not be determined and which outgoing interface to send a reply message by this moment.In order to guarantee to reply client computer by optimal path, the present invention utilizes the request message of client computer, has write down best reverse-path in advance.
In the practical application, the present invention can accomplish:
First kind of situation is that the client computer of coming to visit belongs to certain carrier network A, and the wan interface that enters router is the network insertion to should operator providing just in time, in this case, if directly reply client computer by the link of this operator, its response speed is more faster than other link.That is to say, directly reply from operator's A access interface from the visit that the A of operator comes.
Second kind of situation is that the client computer of coming to visit belongs to certain carrier network A, but because of the carrier network router breaks down, visiting request detours and visits server by carrier network B, the outgoing interface that this moment, server also can provide by the B of operator is automatically replied client computer, that is to say that the server self study arrived the fault among the carrier network A, after the A of operator router recovered, client requests entered from the wan interface of the A of operator again, and server also can be made corresponding adjustment immediately.
This shows, no matter whether link is normal, as long as adopted server of the present invention or router can receive the request message of client computer, and the wan interface that enters of request message is set to reply the next-hop interface of message, after this, when if server is replied this client computer, directly send and get final product from this outgoing interface.Emphasize that it is corresponding with the source address in the request message that set next jumped out interface here.
The present invention program be described in detail below with preferred embodiment in order to illustrate better.
Fig. 1 is the networking schematic diagram of present embodiment.As shown in Figure 1, egress router has two wan interfaces, is respectively W1 interface and W2 interface.Wherein, the corresponding A of operator of W1 interface is connected with network by link A1; The corresponding B of operator of W2 interface is connected with network by link B1.In the present embodiment, the IP address of server is privately owned address in the local area network (LAN), the client computer of access server to belong in the A of the operator network, and its IP address is IP1, disposes the network address translation (nat) agreement on the router.
In addition, in order to write down client address better and next jumps out the corresponding relation of interface, present embodiment is provided with a route forwarding table in advance, and each list item contains two contents: promptly destination address and next are jumped out interface, its form as shown in Table 1:
Destination address Next jumps out interface
... ...
Table 1
Fig. 2 is the flow chart of the realization Route Selection of present embodiment.As shown in Figure 2, present embodiment can may further comprise the steps:
Step 201: router receives the request message from the internet, and the source address of described request message is IP1;
Step 202: router is inquired about route forwarding table according to the source address of the request message that receives, and judges the list item that whether has described source address in the route forwarding table;
If there is the list item of the source address of request message in the route forwarding table, and it is consistent with the wan interface that the current request message enters that next of its correspondence jumped out interface, then need not to refresh destination address and next jumps out the corresponding relation of interface, if inconsistent then upgrade this next to jump out interface be current wan interface;
If there is not the list item of the source address of request message in the route forwarding table, then router is carried out as the described subsequent operation of step 203.
Step 203: router is created new list item in route forwarding table, and source address in the request message and the wan interface position that enters are recorded in the list item of new establishment.
At this moment, the recording status of route forwarding table is as shown in Table 2:
Destination address Next jumps out interface
... ...
IP1 A1
Table 2
In the present embodiment, the IP address of server is privately owned address in the local area network (LAN), so the wan interface of router has disposed the NAT agreement, can be to replying message according to the NAT protocol processes, and the destination address that is about to reply in the message is converted to the privately owned address of server.Wan interface its own IP address described here belongs to public network address, can directly be visited, and then belongs to prior art as for specifically how the answer message being carried out the NAT protocol processes, repeats no more herein.Certainly, in the practical application,, just can not need to carry out the NAT protocol processes yet, promptly can omit this step not in the wan interface configuration NAT of router agreement if server ip address is a public network address in the local area network (LAN).
Step 204: router sends to server with request message
Step 205: router is received the answer message of server to this client requests message, jumps out interface according to next that writes down and send a reply message in table 2.
At that time, if the router wan interface has disposed the NAT agreement, follow-up answer message also need just send after through the NAT protocol processes.
In addition, in the practical application, because the state of network is dynamic change, originally normal link may break down, and originally the link of fault also may recover normal again.The present invention refreshes route table items and arrives person's priority principle by the back, adapts to this variation of network well, and in order not waste the router memory space, each list item in the route forwarding table is provided with age timer separately in addition.Ageing timer starts or refreshes when refreshing at list item of new establishment or with contents in table.If the timer timing arrives the ageing time that is provided with in advance, then delete this route table items.
Behind the deletion route forwarding table list item,, then need to re-execute step 203, redefine next corresponding and jump out interface with this network address if egress router receives the source address request message identical with the network address in the remove entries again.newly determine next jump out interface may with deletion before identical, also may since network generation conversion and with deletion before inequality.
At the route selection method of above-mentioned realization, the present invention also proposes a kind of router.This router comprises at least: the Internet side Transmit-Receive Unit, route control unit, server side Transmit-Receive Unit.
Wherein, the Internet side Transmit-Receive Unit is used to receive and send the mutual message of router and internet; Route control unit is used to the network address collection under each wide area network wan interface in the request message record internet of the Internet side Transmit-Receive Unit Transmit-Receive Unit.The server side Transmit-Receive Unit is used to receive and send the message of router and server interaction.
For router interior structure chart of the present invention is described better, be elaborated with a preferred embodiment below.
Fig. 3 is the internal structure schematic diagram of present embodiment router.As shown in Figure 3, in the present embodiment, router also comprises the Internet side Transmit-Receive Unit 301, route control unit 302, server side Transmit-Receive Unit 303, and described route control unit 302 can comprise route judging unit 3021, routing table administrative unit 3022, list item ageing timer unit 3023 again.Wherein,
Judging unit 3021, whether the route forwarding table that is used for judging routing table administrative unit 3022 exists the list item from the source address of the request message of the Internet side Transmit-Receive Unit 301, if there is no, then notify routing table administrative unit 3022 to create new list item, and interface is jumped out with corresponding next in the record network address; Whether if exist, it is consistent with the wan interface that the current request message enters to check that then corresponding next in this list item jumped out interface, and the inconsistent routing table administrative unit of then notifying is upgraded this list item.
Routing table administrative unit 3022 is used to store route forwarding table, creates and the renewal list item, the source address in the request message is jumped out interface with corresponding next note.
When the Internet side Transmit-Receive Unit 301 receives request message, judge by judging unit 3021 whether route forwarding table in the routing table administrative unit 3022 exists the list item of the source address in the described request message, if there is no, then create the list item record, if exist, whether with wan interface that current request message enter consistent, the inconsistent routing table administrative unit of then notifying is upgraded this list item if checking then in the list item that corresponding next jumped out interface.Start record list item ageing timer when establishment or renewal list item.
After this, when router receives answer message from server, still judge by judging unit 3021 whether the route forwarding table in the routing table administrative unit 3022 deposits the map network address list item.If exist, then directly to jump out interface and send from next of replying message destination address correspondence, it is a wan interface in the Internet side Transmit-Receive Unit 301 that next of described destination address correspondence jumped out interface.
In the practical application, in order to adapt to the variation of network better, guarantee server with client computer in the optimal path access the Internet, route control unit 302 can further include:
List item age timer 3023, each list item that is used for route is transmitted carries out timing, and when arriving the ageing time that is provided with in advance, the corresponding list item of notice routing table administrative unit 3022 deletions.
In addition, in the practical application, in the Internet side Transmit-Receive Unit 301 each wan interface possible configuration the NAT agreement, described router can further include:
Network address translation NAT protocol element 304 is used for the answer message is handled according to the NAT agreement, and the answer message after will handling sends by the Internet side Transmit-Receive Unit.
Use the present invention program, router can utilize asks message to judge that next jumps out interface, can guarantee that not only LAN server replys client computer in the internet according to optimal path, and, can reduce the configuration effort amount greatly owing to need not prior manual configuration route.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (9)

1. the route selection method of a multi-exit server may further comprise the steps:
A. server receives the request message from wide area network, and the source address of described request message is the network address of client computer;
B. server by utilizing described request message, the network address and this request message of record client computer enter the pairing wan interface of link, when server is replied described client computer, this wan interface are jumped out interface as next, realize the selection of route.
2. route selection method according to claim 1, it is characterized in that, further comprise after the described step b: c. continues to send destination address and goes on foot when gathering the identical message in the described network address of b when server, jumps out interface according to next of described network address correspondence and message is sent gets final product.
3. route selection method according to claim 1 and 2, it is characterized in that, be provided for writing down the network address in advance and jump out the route forwarding table of interface corresponding relation with next, described step b comprises: server is judged the list item that whether has the described network address in the route forwarding table according to the described request message, not, then create new list item, with the source address of described request message and enter the pairing wan interface of link and be recorded in the new establishment list item, this wan interface be described network address correspondence next jump out interface; Be, whether next that then check described network address correspondence jumped out interface consistent with the wan interface that the current request message enters, inconsistent then upgrade this next jump out interface for when the wan interface that advance into; When server sends a reply message, will reply message according to route forwarding table and jump out interface from next of described network address correspondence and send.
4. route selection method according to claim 3 is characterized in that, when new establishment or renewal list item, starts the list item age timer, if timing arrives the ageing time of setting in advance, then deletes corresponding list item.
5. route selection method according to claim 1 and 2, it is characterized in that, the wan interface of server has disposed network address translation protocol, replying in message sends from wan interface, handles replying message according to network address translation protocol.
6. router, comprise the server side Transmit-Receive Unit, the Internet side Transmit-Receive Unit, have a plurality of wan interfaces in the described the Internet side Transmit-Receive Unit, corresponding different respectively Virtual network operator links, it is characterized in that, this router also comprises route control unit, the Internet side Transmit-Receive Unit receives the request message from wide area network, the source address of route control unit record described request message and the wan interface that enters thereof, when the server side Transmit-Receive Unit is received the answer message of server, this wan interface of route control unit be set to reply message next jump out interface.
7. router according to claim 6 is characterized in that, described route control unit comprises:
The routing table administrative unit: be used to store route forwarding table, create or upgrade list item, the wan interface that the source address in the request message and request message enter is noted, this wan interface is next of replying message and jumps out interface;
Judgement unit: whether the route forwarding table that is used for judging the routing table administrative unit exists the list item from the source address of the request message of the Internet side Transmit-Receive Unit, if there is no, then notifies the routing table administrative unit to create new list item; Whether if exist, it is consistent with the wan interface that the current request message enters to check that then corresponding next jumped out interface, inconsistent then notify the routing table administrative unit upgrade this next jump out interface for when the wan interface that advances into.
8. router according to claim 7, it is characterized in that described route control unit also comprises the list item age timer, each list item that is used for route is transmitted carries out timing, and when arriving the ageing time that is provided with in advance, the corresponding list item of notice routing table administrative unit deletion; Described routing table administrative unit is further used for the corresponding list item of notice deletion according to the list item age timer simultaneously.
9. according to the described router of arbitrary claim in the claim 6~8, it is characterized in that, described router also comprises the network address translation protocol unit, be used for the answer message is handled according to network address translation protocol, and the answer message after will handling sends by the Internet side Transmit-Receive Unit.
CNA2007103045790A 2007-12-28 2007-12-28 A route selecting method for multi-exit server and router Pending CN101217465A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101383778B (en) * 2008-10-27 2011-04-13 杭州华三通信技术有限公司 Packet transmission method based on network dual exit and exit router
CN101350772B (en) * 2008-09-08 2011-11-23 成都飞鱼星科技开发有限公司 Method for selecting line of router with multiple WAN interfaces, system and router
CN105100300A (en) * 2015-08-26 2015-11-25 北京星网锐捷网络技术有限公司 Method and device for network address translation
CN105207904A (en) * 2014-06-25 2015-12-30 广州市动景计算机科技有限公司 Message processing method, device and router
CN105323191A (en) * 2014-08-04 2016-02-10 启碁科技股份有限公司 Router and resource distribution method thereof
CN107135096A (en) * 2017-04-11 2017-09-05 北京奇艺世纪科技有限公司 Fort machine outbound optimizes system and method
CN109379450A (en) * 2018-10-11 2019-02-22 平安科技(深圳)有限公司 Network interface interactive management method, device, computer equipment and storage medium
CN111953770A (en) * 2020-08-07 2020-11-17 平安科技(深圳)有限公司 Route forwarding method and device, route equipment and readable storage medium
CN112422424A (en) * 2019-08-21 2021-02-26 罗伯特·博世有限公司 Method for transmitting data in a control system of a machine
CN114710448A (en) * 2022-04-18 2022-07-05 北京小米移动软件有限公司 Message transmission method and device, electronic equipment and storage medium

Cited By (16)

* Cited by examiner, † Cited by third party
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CN101350772B (en) * 2008-09-08 2011-11-23 成都飞鱼星科技开发有限公司 Method for selecting line of router with multiple WAN interfaces, system and router
CN101383778B (en) * 2008-10-27 2011-04-13 杭州华三通信技术有限公司 Packet transmission method based on network dual exit and exit router
CN105207904A (en) * 2014-06-25 2015-12-30 广州市动景计算机科技有限公司 Message processing method, device and router
CN105207904B (en) * 2014-06-25 2018-07-17 广州市动景计算机科技有限公司 Processing method, device and the router of message
CN105323191A (en) * 2014-08-04 2016-02-10 启碁科技股份有限公司 Router and resource distribution method thereof
CN105323191B (en) * 2014-08-04 2018-12-25 启碁科技股份有限公司 Router and its resource allocation methods
CN105100300B (en) * 2015-08-26 2020-07-28 北京星网锐捷网络技术有限公司 Method and device for converting network address into NAT
CN105100300A (en) * 2015-08-26 2015-11-25 北京星网锐捷网络技术有限公司 Method and device for network address translation
CN107135096A (en) * 2017-04-11 2017-09-05 北京奇艺世纪科技有限公司 Fort machine outbound optimizes system and method
CN107135096B (en) * 2017-04-11 2020-06-30 北京奇艺世纪科技有限公司 Exit link optimization system and method for bastion machine
CN109379450A (en) * 2018-10-11 2019-02-22 平安科技(深圳)有限公司 Network interface interactive management method, device, computer equipment and storage medium
CN112422424A (en) * 2019-08-21 2021-02-26 罗伯特·博世有限公司 Method for transmitting data in a control system of a machine
CN111953770A (en) * 2020-08-07 2020-11-17 平安科技(深圳)有限公司 Route forwarding method and device, route equipment and readable storage medium
CN111953770B (en) * 2020-08-07 2022-11-25 平安科技(深圳)有限公司 Route forwarding method and device, route equipment and readable storage medium
CN114710448A (en) * 2022-04-18 2022-07-05 北京小米移动软件有限公司 Message transmission method and device, electronic equipment and storage medium
CN114710448B (en) * 2022-04-18 2024-02-06 北京小米移动软件有限公司 Message transmission method, device, electronic equipment and storage medium

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