CN105991425B - Route configuration method and system - Google Patents
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Abstract
The invention discloses a route configuration method, which comprises the following steps: a first node receives routing information sent by a second node adjacent to the first node; when prefix information of each received routing information is not matched and the received routing information contains a default route, the first node configures each route in other routing information except the default route as a main route; the first node configures the default route as a backup route for each of the primary routes. The invention also discloses a route configuration system. The invention does not need to determine the main route and the standby route through calculation, thereby improving the configuration efficiency of the route.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and a system for route configuration.
Background
In the process of data transmission, when a certain output interface of a data transmission node fails or a data transmission link fails, data transmission can be performed through a standby route of a current data transmission route, that is, a route and the standby route are configured at a forwarding node for the same route prefix, a link or interface state corresponding to the next hop of a main route is detected by using a rapid detection mechanism, and when the link or the interface failure is detected, the standby route is rapidly switched to and used for forwarding.
The specific process of configuring the primary route and the standby route specifically includes: when two adjacent nodes of the forwarding node are provided, the routing information sent by the adjacent nodes is obtained, two routes with the same received routing information and different prefixes and next hops are determined, so that a main next hop and a standby next hop are generated to the forwarding plane, and finally the main and standby routes are formed on the forwarding plane. The method needs to obtain the attribute information of each route to determine the priority between the routes with different next hops, takes the route with higher priority as the main route and takes the route with lower priority as the standby route, and has complex calculation process and lower route configuration efficiency.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a route configuration method and a route configuration system, and aims to solve the technical problem of low route configuration efficiency.
In order to achieve the above object, the present invention provides a route configuration method, including the following steps:
a first node receives routing information sent by a second node adjacent to the first node;
when prefix information of each received routing information is not matched and the received routing information contains a default route, the first node configures each route in other routing information except the default route as a main route;
the first node configures the default route as a backup route for each of the primary routes.
Preferably, after the step of the first node receiving the routing information sent by the second node adjacent to the first node, the routing configuration method includes:
when routing information matched with prefix information exists in the received routing information, the first node takes the routing information matched with the prefix information as routing information to be compared;
the first node compares the attribute information corresponding to the routes with the same prefix in the different routing information to be compared so as to sequence the routes with the same prefix;
and the first node configures a main route and a standby route in the same prefix route according to the sequencing result.
Preferably, after the step of determining, by the first node, the primary route and the backup route corresponding to the same prefix according to the sorting result, the route configuration method includes the steps of:
when other routing information except the routing information with the same prefix information exists in the received routing information and the other routing information is multiple, the first node determines whether any routing information in the other routing information contains a default route;
when routing information in the other routing information includes a default route, the first node configures each route in the other routing information except the routing information including the default route as a main route;
the first node configures the default route as a backup route for the primary route.
Preferably, after the step of determining whether there is route information containing a default route in the received route information when there is other route information except for the route information with the same prefix information in the received route information and there are a plurality of other route information, the route configuration method further includes the steps of:
when the other routing information does not contain the default route, the first node configures each route in the other routing information as a main route, and configures a pre-stored static route as a standby route of each main route.
Preferably, after the step of receiving the routing information sent by the neighboring node, the routing configuration method further includes the steps of:
when the prefix information of each received routing information is not matched and all the routing information does not contain a default route, the first node configures each route in the received routing information as a main route and configures a pre-stored static route as a standby route of each main route.
In addition, to achieve the above object, the present invention further provides a route configuration system, including:
the receiving module is used for receiving the routing information sent by the adjacent node of the node where the receiving module is located;
the configuration module is configured to configure each route in the route information except for the default route as a main route and configure the default route as a backup route of each main route when the prefix information of each received route information is not matched and the received route information contains the default route.
Preferably, the route configuration system further includes:
the processing module is used for taking the routing information matched with the prefix information as the routing information to be compared when the received routing information has the routing information matched with the prefix information;
the sorting module is used for comparing the attribute information corresponding to the routes with the same prefix in the different routing information to be compared so as to sort the routes with the same prefix;
the configuration module is further configured to configure a primary route and a backup route in the same prefix route according to the sorting result
Preferably, the route configuration system further includes a first determining module, configured to determine, when there are other route information except route information with the same prefix information in the received route information and there are a plurality of other route information, whether there is route information in the other route information that includes a default route; the configuration module is further configured to configure, when routing information in the other routing information includes a default route, each route in the routing information other than the default route in the other routing information as a master route, and configure the default route as a standby route of the master route.
Preferably, the configuration module is further configured to configure each route in the other route information as a master route and configure a pre-stored static route as a standby route of each master route when none of the other route information contains a default route.
10. The routing configuration system according to any one of claims 6 to 9, wherein the configuration module is further configured to configure each route in the received routing information as a primary route and configure a pre-stored static route as a backup route for each primary route when the prefix information of each received routing information is not matched and all routing information does not include a default route.
According to the route configuration method and system provided by the invention, when prefix information of each received route information is not matched and the received route information contains a default route, each route in other route information except the default route is configured as a main route by the first node; the first node configures the default route as a standby route of each main route, and the main route and the standby route are not determined through calculation, so that the configuration efficiency of the routes is improved, and the system overhead is saved.
Drawings
FIG. 1 is a flow chart illustrating a preferred embodiment of a route configuration method according to the present invention;
fig. 2 is a functional block diagram of a routing configuration system according to a preferred embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.
The invention provides a route configuration method.
Referring to fig. 1, fig. 1 is a flow chart illustrating a preferred embodiment of the route configuration method of the present invention.
This embodiment proposes a route configuration method, where the route configuration method includes:
step S10, the first node receives the route information sent by the adjacent second node;
the first node can determine the adjacent second node according to the network topology stored by the first node or the network topology stored by the controller; the first node sends a routing information acquisition request to a second node adjacent to the first node so as to acquire the routing information sent by the second node. Alternatively, the second node actively sends routing information to its neighboring first node, where the routing information includes a plurality of routes (e.g., 1 ten thousand), and each route includes a routing prefix and a next-hop node, for example, when the routing prefix is 1.1.0.0, and the next-hop node is identified as PE2, the route is 1.1.0.0/PE2.
Step S20, when the prefix information of each received route information is not matched and there is a received route information that includes a default route, the first node configures each route in the route information other than the default route as a master route;
in this embodiment, the prefix information of the routing information may be a prefix range of the route included in the routing information, for example, when the prefix of the routing information is 1.0 to 2.0, the prefix range corresponding to each route included in the routing information is between 1.0 and 2.0; the prefix information matching means that prefix ranges contained in the routing information are partially overlapped, for example, when the prefix information of two routing information is 1.0-2.0, the prefix information of the two routing information is matched, or when the prefix information of one routing information is 1.0-2.0 and the prefix of the other routing information is 1.0-3.0, the two routing information are considered to be matched; when the prefix information of one routing information is 1.0-2.0 and the prefix of the other routing information is 2.0-3.0, the two routing information are considered not to be matched.
The default route is provided with a preset prefix, for example, 0.0.0.0, that is, when the route information is received, the prefix information of each route information is acquired, and when the prefix information of the route information contains 0.0.0.0, the route information is considered to contain the default route. Each route among other route information than the route including the default route may be stored in the master route table, and each route may be configured as a master route.
Step S30, the first node configures the default route as a backup route for each of the primary routes.
The first node can determine a main route corresponding to the data to be forwarded according to a prefix of the data to be forwarded in the process of forwarding the data, determine whether a transmission port and a transmission link corresponding to the main route are normal, and forward the data to be forwarded to the corresponding node according to the main route when the transmission port and the transmission link are normal; when the transmission port and the transmission link corresponding to the main route are in fault, the standby route of the main route can be directly acquired, and the data to be forwarded is forwarded to the corresponding node according to the standby route.
As will be understood by those skilled in the art, after the step S10, the route configuration method further includes the steps of:
when routing information matched with prefix information exists in the received routing information, the first node takes the routing information matched with the prefix information as routing information to be compared;
the first node compares the attribute information corresponding to the routes with the same prefix in the different routing information to be compared so as to sequence the routes with the same prefix;
and the first node configures a main route and a standby route in the same prefix route according to the sequencing result.
In this embodiment, the attribute information of the route includes a loc _ pref attribute, an as-path attribute, a med attribute, etc., and the priority of each route is determined according to each attribute (i.e., each route is sorted), the route with the highest priority is used as the main route, and the route with the second priority is used as the backup route, where the backup route may be one or multiple. When the standby route is multiple, the standby routes can be stored according to the priority, and when the main route fails, the standby routes can be called in sequence according to the priority.
Since the first node receives a plurality of pieces of routing information, except for the routing information matched with the prefix information, there may be other pieces of routing information, and after the step of "the first node configures the primary route and the backup route in the same prefix route according to the sorting result", the routing configuration method further includes the steps of:
when other routing information except the routing information with the same prefix information exists in the received routing information and the other routing information is multiple, the first node determines whether any routing information in the other routing information contains a default route;
when routing information in the other routing information includes a default route, the first node configures each route in the other routing information except the routing information including the default route as a main route;
the first node configures the default route as a backup route for the primary route.
When included, the default route may be set directly as a backup route for each of the other routes.
After the step of determining, by the first node, whether there is any route information in the received route information that includes the default route, that is, when there is another route information other than the route information having the same prefix information in the received route information and there are a plurality of other route information, the route configuration method further includes the steps of:
when the other routing information does not contain the default route, the first node configures each route in the other routing information as a main route, and configures a pre-stored static route as a standby route of each main route.
When the first node is configured with the static route, each route in the other route information is configured as a main route, and the pre-stored static route is configured as a standby route of each main route, which is very convenient.
Further, to improve the efficiency of route configuration and reduce the system overhead, after the step S10, the method for route configuration further includes the steps of:
when the prefix information of each received routing information is not matched and all the routing information does not contain a default route, the first node configures each route in the received routing information as a main route and configures a pre-stored static route as a standby route of each main route.
In this embodiment, the pre-stored static network can be directly used as a standby network to ensure normal switching of the routing, and the method has low system overhead and is very convenient.
In the route configuration method provided in this embodiment, when prefix information of each received route information is not matched and there is received route information including a default route, the first node configures each route in other route information except for the default route as a main route; the first node configuring the default route as a backup route for each of the primary routes; and the main route and the standby route are not determined by calculation, so that the configuration efficiency of the route is improved.
The invention further provides a route configuration system.
Referring to fig. 2, fig. 2 is a functional module diagram of a preferred embodiment of the routing configuration system of the present invention.
It is emphasized that the functional block diagram of fig. 2 is merely an exemplary diagram of a preferred embodiment for those skilled in the art, and those skilled in the art can easily add new functional blocks around the functional blocks of the routing configuration system shown in fig. 2; the names of the functional modules are self-defined names which are only used for assisting in understanding the program functional blocks of the routing configuration system and are not used for limiting the technical scheme of the invention, and the core of the technical scheme of the invention is the functions which are to be achieved by the functional modules with the respective defined names.
This embodiment proposes a route configuration system, which includes:
a receiving module 10, configured to receive routing information sent by a neighboring node of a node where the receiving module is located;
the node where the receiving module 10 is located may determine its neighboring node according to the network topology stored in the node or the network topology stored in the controller; the node where the receiving module 10 is located sends a routing information obtaining request to its neighboring node to obtain the routing information sent by the neighboring node. Or, the neighboring node actively sends routing information to the node where the receiving module 10 is located, where the routing information includes multiple routes (e.g., 1 ten thousand routes), and each route includes a route prefix and a next-hop node, for example, when the route prefix is 1.1.0.0, and the next-hop node is identified as PE2, the route is 1.1.0.0/PE2.
A configuring module 20, configured to configure each route in the route information except for the default route as a main route and configure the default route as a backup route of each main route when the prefix information of each received route information is not matched and the received route information contains the default route.
In this embodiment, the prefix information of the routing information may be a prefix range of the route included in the routing information, for example, when the prefix of the routing information is 1.0 to 2.0, the prefix range corresponding to each route included in the routing information is between 1.0 and 2.0; the prefix information matching means that prefix ranges contained in the routing information are partially overlapped, for example, when the prefix information of two routing information is 1.0-2.0, the prefix information of the two routing information is matched, or when the prefix information of one routing information is 1.0-2.0 and the prefix of the other routing information is 1.0-3.0, the two routing information are considered to be matched; when the prefix information of one routing information is 1.0-2.0 and the prefix of the other routing information is 2.0-3.0, the two routing information are considered not to be matched.
The default route is provided with a preset prefix, for example, 0.0.0.0, that is, when the route information is received, the prefix information of each route information is acquired, and when the prefix information of the route information contains 0.0.0.0, the route information is considered to contain the default route. Each route among other route information than the route including the default route may be stored in the master route table, and each route may be configured as a master route.
In the process of forwarding data, the node where the configuration module 20 is located may determine, according to a prefix of the data to be forwarded, a main route corresponding to the data to be forwarded, and determine whether a transmission port and a transmission link corresponding to the main route are normal, and when the transmission port and the transmission link are normal, forward the data to be forwarded to the corresponding node according to the main route; when the transmission port and the transmission link corresponding to the main route are in fault, the standby route of the main route can be directly acquired, and the data to be forwarded is forwarded to the corresponding node according to the standby route.
As will be appreciated by those skilled in the art, the route configuration system further comprises:
the processing module is used for taking the routing information matched with the prefix information as the routing information to be compared when the received routing information has the routing information matched with the prefix information;
the sorting module is used for comparing the attribute information corresponding to the routes with the same prefix in the different routing information to be compared so as to sort the routes with the same prefix;
the configuration module 20 is further configured to configure a primary route and a standby route in the same prefix route according to the sorting result.
In this embodiment, the attribute information of the route includes a loc _ pref attribute, an as-path attribute, a med attribute, etc., and the priority of each route is determined according to each attribute (i.e., each route is sorted), the route with the highest priority is used as the main route, and the route with the second priority is used as the backup route, where the backup route may be one or multiple. When the standby route is multiple, the standby routes can be stored according to the priority, and when the main route fails, the standby routes can be called in sequence according to the priority.
Since the routing information received by the node where the configuration module 20 is located is multiple, other routing information may exist in addition to the routing information matched with the prefix information, and the routing configuration system further includes a first determining module, configured to determine whether there is routing information in the other routing information that includes a default route when the received routing information includes routing information that is the same as the prefix information and the other routing information is multiple; the configuring module 20 is further configured to configure, when routing information in the other routing information includes a default route, each route in the other routing information except the default route as a master route, and configure the default route as a standby route of the master route. When included, the default route may be set directly as a backup route for each of the other routes.
The configuring module 20 is further configured to configure each route in the other route information as a main route and configure a pre-stored static route as a standby route of each main route when none of the other route information includes a default route.
When the first node is configured with the static route, each route in the other route information is configured as a main route, and the pre-stored static route is configured as a standby route of each main route, which is very convenient.
Further, in order to improve the routing configuration efficiency and reduce the system overhead, the configuration module 20 is further configured to configure each route in the received routing information as a main route and configure a pre-stored static route as a standby route of each main route when the prefix information of each received routing information is not matched and all the routing information does not include a default route.
In this embodiment, the pre-stored static network can be directly used as a standby network to ensure normal switching of the routing, and the method has low system overhead and is very convenient.
In the routing configuration system provided in this embodiment, when prefix information of each piece of received routing information is not matched and there is received routing information that includes a default route, the first node configures each piece of routing information except for the default route as a master route; the first node configuring the default route as a backup route for each of the primary routes; and the main route and the standby route are not determined by calculation, so that the configuration efficiency of the route is improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A route configuration method, characterized in that the route configuration method comprises the steps of:
a first node receives routing information sent by a second node adjacent to the first node;
when prefix information of each received routing information is not matched and the received routing information contains a default route, the first node configures each route in other routing information except the default route as a main route;
the first node configures the default route as a backup route for each of the primary routes.
2. The route configuration method according to claim 1, wherein after the step of the first node receiving the route information sent by the second node adjacent to the first node, the route configuration method comprises:
when routing information matched with prefix information exists in the received routing information, the first node takes the routing information matched with the prefix information as routing information to be compared;
the first node compares the attribute information corresponding to the routes with the same prefix in the different routing information to be compared so as to sequence the routes with the same prefix;
and the first node configures a main route and a standby route in the same prefix route according to the sequencing result.
3. The routing configuration method according to claim 2, wherein after the step of the first node determining the primary route and the backup route corresponding to the same prefix according to the sorting result, the routing configuration method comprises the steps of:
when other routing information except the routing information with the same prefix information exists in the received routing information and the other routing information is multiple, the first node determines whether any routing information in the other routing information contains a default route;
when routing information in the other routing information includes a default route, the first node configures each route in the other routing information except the routing information including the default route as a main route;
the first node configures the default route as a backup route for the primary route.
4. The routing configuration method according to claim 3, wherein, when there is other routing information except for the routing information with the same prefix information in the received routing information and there are a plurality of other routing information, and after the step of determining whether there is routing information including a default route in the other routing information, the routing configuration method further comprises the steps of:
when the other routing information does not contain the default route, the first node configures each route in the other routing information as a main route, and configures a pre-stored static route as a standby route of each main route.
5. The route configuration method according to any of claims 1-4, wherein after the step of receiving the route information sent by the neighboring node, the route configuration method further comprises the steps of:
when the prefix information of each received routing information is not matched and all the routing information does not contain a default route, the first node configures each route in the received routing information as a main route and configures a pre-stored static route as a standby route of each main route.
6. A route configuration system, characterized in that the route configuration system comprises:
the receiving module is used for receiving the routing information sent by the adjacent node of the node where the receiving module is located;
the configuration module is configured to configure each route in the route information except for the default route as a main route and configure the default route as a backup route of each main route when the prefix information of each received route information is not matched and the received route information contains the default route.
7. The routing configuration system of claim 6, wherein the routing configuration system further comprises:
the processing module is used for taking the routing information matched with the prefix information as the routing information to be compared when the received routing information has the routing information matched with the prefix information;
the sorting module is used for comparing the attribute information corresponding to the routes with the same prefix in the different routing information to be compared so as to sort the routes with the same prefix;
the configuration module is further configured to configure a primary route and a standby route in the same prefix route according to the sorting result.
8. The routing configuration system according to claim 7, wherein the routing configuration system further includes a first determining module, configured to determine whether any routing information in the other routing information includes a default route, when there is other routing information except for routing information with the same prefix information in the received routing information, and there are a plurality of other routing information; the configuration module is further configured to configure, when routing information in the other routing information includes a default route, each route in the routing information other than the default route in the other routing information as a master route, and configure the default route as a standby route of the master route.
9. The routing configuration system of claim 8, wherein the configuration module is further configured to configure each of the other routing information as a master route and configure a pre-stored static route as a backup route for each of the master routes when none of the other routing information contains a default route.
10. The routing configuration system according to any one of claims 6 to 9, wherein the configuration module is further configured to configure each route in the received routing information as a primary route and configure a pre-stored static route as a backup route for each primary route when the prefix information of each received routing information is not matched and all routing information does not include a default route.
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| Publication number | Publication date |
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| CN105991425A (en) | 2016-10-05 |
| WO2016127559A1 (en) | 2016-08-18 |
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