CN109428820B - Multi-line routing method and system - Google Patents
Multi-line routing method and system Download PDFInfo
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- CN109428820B CN109428820B CN201710760115.4A CN201710760115A CN109428820B CN 109428820 B CN109428820 B CN 109428820B CN 201710760115 A CN201710760115 A CN 201710760115A CN 109428820 B CN109428820 B CN 109428820B
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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
- H04L45/02—Topology update or discovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/12—Discovery or management of network topologies
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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
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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
Abstract
The invention discloses a multi-line routing method and a multi-line routing system, wherein the method comprises the following steps: configuring gateway IPs belonging to different operators on a node server; the central server determines a policy table of each operator on each node server according to the operator supported by each node server and gateway configuration information on each node server, and the node server configures the policy table of each operator supported by each node server; the policy table of each operator comprises an IP set and a gateway IP of the operator; and the node server receives the access request, matches the IP set in the policy table of each operator according to the source IP of the access request, and outputs the access request through an exit gateway in the matched routing policy table. The invention uses the node server of the multi-line routing, and the access request is transmitted in the same operator network as much as possible by configuring the multi-line routing strategy, thereby reducing the problem that the source cannot be returned normally due to the transmission of the cross-operator.
Description
Technical Field
The invention relates to the technical field of internet, in particular to a multi-line routing method and a multi-line routing system.
Background
In a complex environment where a plurality of cross-operators exist in an actual application network, a great obstacle is caused to the mutual communication among the operators, for example, a situation that a telecommunication user accesses a connected network, a mobile user accesses the connected network or other small operators access the mobile or connected network, and the access between various types of cross-operator networks is slow in access speed or fails in access usually occurs. Especially, in a Content Delivery Network (CDN) service scenario, when an edge node visits an upper node (also referred to as a parent node), the upper node can only select a single operator Network line, because the upper node needs to return to the source, and a plurality of source stations of customers are set on different operators, a situation that the source returns from an operator across the upper node occurs when the upper node returns to the source station, and thus a phenomenon that the source cannot be returned normally occurs.
For the above situation, a node of a Border Gateway Protocol (BGP) room is generally used as an upper node. The BGP node has strong expansibility, can be communicated with the networks of all operators and can quickly access different operator networks, and a single-IP multi-line scene can be realized. For example, a node using a BGP machine room in a CDN scene is used as an intermediate node, and in a general scene, a user requests access to an edge node, each edge node returns to a BGP node, and the BGP node returns to a source station to pull access content, and then returns to the user layer by layer. The prior art has the following defects:
(1) when a computer room has network fluctuation or abnormality, all client access sources using the computer room node as a father node in the CDN network are abnormal and cannot be switched to other nodes; when each edge node of the CDN returns to the father node to fetch content, communication abnormality may occur, which may cause that the CDN cannot return to the father node normally, and the user cannot access the resource normally, thereby greatly reducing the stability and availability of the CDN platform.
(2) Due to the fact that the lease price and the bandwidth cost of the BGP node computer room are expensive, the bandwidth cost is consumed too much in a large-flow scene of the CDN.
Disclosure of Invention
In order to solve the technical problem, the invention provides a multi-line routing method and a multi-line routing system.
The invention provides a multi-line routing method, which comprises the following steps:
configuring gateway IPs belonging to different operators on a node server;
the central server determines a policy table of each operator on each node server according to the operator supported by each node server and gateway configuration information on each node server, and the node server configures the policy table of each operator supported by each node server; the policy table of each operator comprises an IP set and a gateway IP of the operator;
and the node server receives the access request, matches the IP set in the policy table of each operator according to the source IP of the access request, and outputs the access request through an exit gateway in the matched routing policy table.
The method also has the following characteristics:
the method further comprises the following steps: the central server sends a test task for testing whether the network access between the node server and the target operator is connected to the node server, when the test result is disconnected or the connection index is lower than a preset index, the test access IP in the test task is deleted from the IP in the policy table of the target operator in a centralized manner, the test access IP is added to the policy tables of other operators, and the updated policy tables are configured to the corresponding node servers.
The method also has the following characteristics:
the method further comprises the following steps: configuring the IP belonging to different operators on different test servers, sending a test task for testing whether a network path between the corresponding operator and a node server is connected to the test server by the central server, intensively deleting the test access IP in the test task from the IP in the policy table of the target operator on the node server when the test result is disconnected or the connection index is lower than the preset index, adding the test access IP to the policy tables of other operators, and configuring the updated policy tables to the corresponding node servers.
The method also has the following characteristics:
the method further comprises the following steps: and when the node server is matched with each routing policy table in the routing policy table set and is not matched with the routing policy table, outputting the access request through a default gateway IP.
The method also has the following characteristics:
and when the central server configures the policy tables of the determined operators of the node servers to the corresponding node servers, the configuration is carried out through a script program or a Simple Log Service (SLS).
The invention also provides a multi-wire routing system, comprising: a central server and a node server; the central server comprises a policy management module and a policy configuration module; the node server comprises a configuration module and a routing module;
the policy management module is used for determining a policy table of each operator on each node server according to the operator supported by each node server and gateway configuration information on each node server;
the policy configuration module is used for configuring the policy table of each operator on each node server determined by the policy management module to the corresponding node server;
the configuration module is used for receiving the configuration of the gateway IP belonging to different operators; and is also used for configuring policy tables of the supported operators;
and the routing module is used for matching the IP set in the policy table of each operator according to the source IP of the access request and outputting the access request through an exit gateway in the matched routing policy table.
The system also has the following characteristics:
the central server also comprises a testing module used for sending a testing task for testing whether a network access between the node server and a target operator is connected to the node server, modifying the policy table of the target operator in the policy management module when the testing result is disconnected, deleting the testing access IP in the testing task from the IP in the policy table of the target operator in a centralized manner and adding the testing access IP to the policy tables of other operators;
and the strategy configuration module is used for configuring the updated strategy table of the node server to the corresponding node server.
The system also has the following characteristics:
the system also includes different test servers that configure IPs belonging to different operators;
the central server also comprises a testing module used for sending a testing task for testing whether a network access between a corresponding operator and a node server is connected to the testing server, modifying the policy table of the target operator in the policy management module when the testing result is disconnected, deleting the testing access IP in the testing task from the IP in the policy table of the target operator in a centralized manner and adding the testing access IP to the policy tables of other operators;
and the strategy configuration module is used for configuring the updated strategy table of the node server to the node server.
The system also has the following characteristics:
and the routing module is also used for outputting the access request through a default gateway IP when each routing policy table in the matching routing policy table set is not matched with the routing policy table.
The system also has the following characteristics:
the policy configuration module is further configured to configure the policy table of each operator of the determined node server to the corresponding node server through a script program or a simple log service SLS.
The advantages of the invention include:
(1) the multi-line routing node server is used, access requests are transmitted in the same operator network as much as possible through configuration of multi-line routing strategies, and the problem that normal source return cannot be achieved due to cross-operator transmission is solved.
(2) And a multi-line routing node server is used for replacing a bgp machine room, so that the bandwidth cost is greatly reduced.
(3) After the multi-line routing node server is used, when a certain line of a machine room loses packets, other operators can be switched to use the node server temporarily, so that the nodes of the whole machine room are not cut off and hung, and the usability of the platform is improved.
(4) The small operator or foreign nodes can dynamically adjust the line of the large operator using the stable network according to the actual situation, and can provide diversified services.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
figure 1 is a flow chart of a multi-wire routing method in an embodiment.
Figure 2 is a block diagram of a multi-wire routing system in an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
Figure 1 is a flow chart of a multi-wire routing method in an embodiment. The method comprises the following steps:
102, the central server determines a policy table of each operator on each node server according to the operator supported by each node server and gateway configuration information on each node server, and the node server configures the policy table of each operator supported by each node server; the policy table of each operator comprises an IP set and a gateway IP of the operator;
and 103, the node server receives the access request, matches the IP set in the policy table of each operator according to the source IP of the access request, and outputs the access request through an exit gateway in the matched routing policy table.
Wherein each gateway IP in step 101 corresponds to an independent gateway.
In step 102, the routing policy table includes an identifier of the policy table, a network segment, and a gateway IP. A network segment refers to a set of IPs comprising consecutive IP addresses, e.g. 0.0.0.0 to 0.0.0.200 network segments. Or, the routing policy table includes an identifier of the policy table, an IP set, and a gateway IP. The addresses of the IPs in the IP set are not contiguous.
In step 102, the policy table of each operator configured and supported by the node server includes two implementation manners when it is implemented specifically. In the first mode, the node server requests the policy table from the central server, and after receiving the request, the central server issues the policy table of each operator supported by the node server to the node server. In the second mode, the central server directly issues the policy table of each operator supported by the node server to the node server.
The method also comprises the following steps: the central server sends a test task for testing whether the network access between the node server and the target operator is connected to the node server, and when the test result is that the network access is not connected or the connection index is lower than a preset index, the test access IP in the test task is deleted from the IP in the policy table of the target operator in a centralized manner, and the updated policy table is configured to the node server. For example, when the packet loss rate of a network path from a certain node server to a certain small operator is tested to be greater than the preset packet loss rate, the test access IP in the test task is deleted from the IP set in the policy table of the small operator in a centralized manner, the test access IP is added to the policy table of other large operators, the updated policy table of the node server is configured to the node server, and the updated policy table of the large operator is configured to the node server in the policy table including the policy table of the large operator.
The method also comprises the following steps: configuring the IP belonging to different operators on different test servers, sending a test task for testing whether a network path between the corresponding operator and a node server is connected to the test server by the central server, and when the test result is disconnected or the connection index is lower than a preset index, centrally deleting the test access IP in the test task from the IP in the policy table of the target operator on the node server and configuring the updated policy table to the node server.
And when the node server is matched with each routing policy table in the routing policy table set and is not matched with the routing policy table, outputting an access request through a default gateway IP. The default gateway IP may be one of gateway IPs belonging to different operators and assigned to the node server, or a gateway IP belonging to one operator and specifically assigned in addition to the gateway IP belonging to different operators and assigned to the node server.
When the node server accesses the target IP, the transmission path is determined according to the routing table of each operator.
Figure 2 is a block diagram of a multi-wire routing system in an embodiment. The multi-line routing system comprises: a central server and a node server; the central server comprises a policy management module and a policy configuration module; the node server comprises a configuration module and a routing module.
The policy management module is used for determining a policy table of each operator on each node server according to the operator supported by each node server and gateway configuration information on each node server;
the policy configuration module is used for configuring the policy table of each operator on each node server determined by the policy management module to the corresponding node server;
the configuration module is used for receiving the configuration of the gateway IP belonging to different operators; and is also used for configuring policy tables of the supported operators;
and the routing module is used for matching the IP set in the policy table of each operator according to the source IP of the access request and outputting the access request through an exit gateway in the matched routing policy table.
Wherein the content of the first and second substances,
the strategy management module acquires a node server list and an ip library of each operator when the system is initialized or before the system is initialized, maintains and updates the node server list and the ip library of each operator in the system operation, continuously updates a routing strategy table of each node server, distributes a task for executing the routing strategy and receives a task execution progress. When the strategy configuration module configures the strategy table of each operator of the determined node server to the corresponding node server, the strategy configuration module performs configuration through a script program or a Simple Log Service (SLS)
The routing strategy management module is provided with an automatic configuration program, and the maintained information can be automatically packaged into a distributable configuration program and issued.
Each node server is provided with N gateway IPs, the value of N is larger than 2, the N gateway IPs belong to different operators, and each IP has an independent gateway.
The node server regularly acquires the IP base, gateway information and the routing strategy table of each operator.
The routing module is further configured to output the access request through a default gateway IP when each routing policy table in the matching routing policy table set is not matched to the routing policy table. The default gateway IP may be one of gateway IPs belonging to different operators and assigned to the node server, or a gateway IP belonging to one operator and specifically assigned in addition to the gateway IP belonging to different operators and assigned to the node server.
The system also includes different test servers that configure IPs belonging to different operators. The central server also comprises a testing module used for sending a testing task for testing whether the network access between the corresponding operator and a node server is connected to the testing server, modifying the policy table of the target operator in the policy management module when the testing result is disconnected, deleting the testing access IP in the testing task from the IP in the policy table of the target operator in a centralized manner and adding the testing access IP to the policy tables of other operators. And the strategy configuration module is used for configuring the updated strategy table of the node server to the node server.
The present invention will be described in detail with reference to specific examples.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The central server obtains operators supported by each node server, gateway configuration information on each node server and an IP library of each operator. The central server determines the policy table of each operator on each node server and configures the policy table to the corresponding node server.
The central server automatically constructs a test task and issues the test task to the node server.
And the node server executes the test task, tests the configured routing policy table, tests whether the network access from the node server to all operators is communicated or not, and returns a test result.
The central server sends a test task to the test server, tests whether network paths from all operators to the node server are communicated, if the network paths in the two directions are communicated, the configuration is successful, and if not, the routing strategy configuration fails. And if the configuration fails, continuing to modify the routing policy table for reconfiguration.
After the routing strategy configuration is successful, when a certain line cannot normally serve due to some fault reasons (such as power failure, machine room fault, network packet loss and the like) in the node server in the operation process of the system, when the central server detects the fault, the routing strategy table is continuously modified for reconfiguration, so that the line passes through other operators.
A node server is configured with a routing strategy table and default gateways of M operators. The routing policy table comprises network segments and exit gateways with corresponding relations.
The routing strategy table of the operator I comprises a first network segment and a first gateway which have corresponding relations.
And the routing strategy table of the second operator comprises a second network segment and a second gateway which have corresponding relations.
And so on.
The routing policy table of the operator M includes an mth network segment and an mth gateway having a correspondence relationship.
After receiving the access request from the gateway X, the node server determines the IP of the access request, matches each routing policy table by using the IP, matches the routing policy table of the first operator by using the IP, considers that the IP matches the routing policy table of the first operator when the IP belongs to the first network segment in the routing policy table of the first operator, and matches successfully, otherwise, considers that the IP cannot match the routing policy table of the first operator, continues to match other routing policy tables, and so on until the IP matches the routing policy table, and if the IP cannot match the routing policy table, considers that the matching fails.
And when the matching is successful, determining an exit gateway in the routing policy table, and outputting the access request through the exit gateway. And when the matching fails, outputting the access request by using a default gateway.
Through the process, the node server enables the access request to be transmitted in the network of the source operator of the access request, cross-operator output is prevented, path interaction among different operators is reduced, and effective transmission of data is guaranteed.
The advantages of the invention include:
(1) the multi-line routing node server is used, access requests are transmitted in the same operator network as much as possible through configuration of multi-line routing strategies, and the problem that normal source return cannot be achieved due to cross-operator transmission is solved.
(2) And a multi-line routing node server is used for replacing a bgp machine room, so that the bandwidth cost is greatly reduced.
(3) After the multi-line routing node server is used, when a certain line of a machine room loses packets, other operators can be switched to use the node server temporarily, so that the nodes of the whole machine room are not cut off and hung, and the usability of the platform is improved.
(4) The small operator or foreign nodes can dynamically adjust the line of the large operator using the stable network according to the actual situation, and can provide diversified services.
The above-described aspects may be implemented individually or in various combinations, and such variations are within the scope of the present invention.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing the relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a magnetic or optical disk, and the like. Alternatively, all or part of the steps of the foregoing embodiments may also be implemented by using one or more integrated circuits, and accordingly, each module/unit in the foregoing embodiments may be implemented in the form of hardware, and may also be implemented in the form of a software functional module. The present invention is not limited to any specific form of combination of hardware and software.
It is to be noted that, in this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, so that an article or apparatus including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.
The above embodiments are merely to illustrate the technical solutions of the present invention and not to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made without departing from the spirit and scope of the present invention and it should be understood that the present invention is to be covered by the appended claims.
Claims (8)
1. A multi-wire routing method for returning a source across operators, comprising:
configuring gateway IPs belonging to different operators on a node server;
the central server determines a policy table of each operator on each node server according to the operator supported by each node server and gateway configuration information on each node server, and the node server configures the policy table of each operator supported by each node server; the policy table of each operator comprises an IP set and a gateway IP of the operator;
the node server receives the access request, matches the IP set in the policy table of each operator according to the source IP of the access request, and outputs the access request through an exit gateway in the matched routing policy table;
the method further comprises the following steps: the central server sends a test task for testing whether the network access between the node server and the target operator is connected to the node server, when the test result is disconnected or the connection index is lower than a preset index, the test access IP in the test task is deleted from the IP in the policy table of the target operator in a centralized manner, the test access IP is added to the policy tables of other operators, and the updated policy tables are configured to the corresponding node servers.
2. The multi-wire routing method of claim 1,
the method further comprises the following steps: configuring the IP belonging to different operators on different test servers, sending a test task for testing whether a network path between the corresponding operator and a node server is connected to the test server by the central server, intensively deleting the test access IP in the test task from the IP in the policy table of the target operator on the node server when the test result is disconnected or the connection index is lower than the preset index, adding the test access IP to the policy tables of other operators, and configuring the updated policy tables to the corresponding node servers.
3. The multi-wire routing method of claim 1,
the method further comprises the following steps: and when the node server is matched with each routing policy table in the routing policy table set and is not matched with the routing policy table, outputting the access request through a default gateway IP.
4. The multi-wire routing method of claim 1,
and when the central server configures the policy tables of the determined operators of the node servers to the corresponding node servers, the configuration is carried out through a script program or a Simple Log Service (SLS).
5. A multi-wire routing system for returning a source across operators, comprising: a central server and a node server; the central server comprises a policy management module and a policy configuration module; the node server comprises a configuration module and a routing module;
the policy management module is used for determining a policy table of each operator on each node server according to the operator supported by each node server and gateway configuration information on each node server;
the policy configuration module is used for configuring the policy table of each operator on each node server determined by the policy management module to the corresponding node server;
the configuration module is used for receiving the configuration of the gateway IP belonging to different operators; and is also used for configuring policy tables of the supported operators;
the routing module is used for matching the IP set in the policy table of each operator according to the source IP of the access request and outputting the access request through an exit gateway in the matched routing policy table;
the central server also comprises a testing module used for sending a testing task for testing whether a network access between the node server and a target operator is connected to the node server, modifying the policy table of the target operator in the policy management module when the testing result is disconnected, deleting the testing access IP in the testing task from the IP in the policy table of the target operator in a centralized manner and adding the testing access IP to the policy tables of other operators;
and the strategy configuration module is used for configuring the updated strategy table of the node server to the corresponding node server.
6. The multi-wire routing system of claim 5,
the system also includes different test servers that configure IPs belonging to different operators;
the central server also comprises a testing module used for sending a testing task for testing whether a network access between a corresponding operator and a node server is connected to the testing server, modifying the policy table of the target operator in the policy management module when the testing result is disconnected, deleting the testing access IP in the testing task from the IP in the policy table of the target operator in a centralized manner and adding the testing access IP to the policy tables of other operators;
and the strategy configuration module is used for configuring the updated strategy table of the node server to the node server.
7. The multi-wire routing system of claim 5,
and the routing module is also used for outputting the access request through a default gateway IP when each routing policy table in the matching routing policy table set is not matched with the routing policy table.
8. The multi-wire routing system of claim 5,
the policy configuration module is further configured to configure the policy table of each operator of the determined node server to the corresponding node server through a script program or a simple log service SLS.
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| CN112134751B (en) * | 2020-09-08 | 2021-06-22 | 广东云下汇金科技有限公司 | Overseas ISP network quality monitoring method and system |
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| CN104811323A (en) * | 2014-01-23 | 2015-07-29 | 腾讯科技（深圳）有限公司 | Data requesting method, data requesting device, node server and CDN (content delivery network) system |
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