WO2020135421A1

WO2020135421A1 - Route configuration method, route update method and device

Info

Publication number: WO2020135421A1
Application number: PCT/CN2019/127931
Authority: WO
Inventors: 张建军; 陆汉雄; 狄翠霞
Original assignee: 中兴通讯股份有限公司
Priority date: 2018-12-29
Filing date: 2019-12-24
Publication date: 2020-07-02
Also published as: CN111385132A; CN111385132B

Abstract

The present application relates to a route configuration method, a route update method and device. The route configuration method comprises the following steps: receiving an update request of an access device, the update request carrying an area identifier of the access device; obtaining from a regionalized static routing table static routing information corresponding to the area identifier; and carrying the static routing information in response information, and replying the response information to the access device.

Description

Route configuration method, route update method and device

cross reference

The present invention requires the priority of a Chinese patent application filed on December 29, 2018 in the Chinese Patent Office with the application number 201811646882.3 and the invention titled "A routing configuration method, routing update method and device", the entire content of the application It is incorporated in this invention by reference.

Technical field

The present application relates to the field of communication technologies, and in particular, to a route configuration method, route update method, and device.

Background technique

In the communication network, the static routes of most access devices are manually configured at the start of the deployment. If there are routing changes caused by network planning and transformation, it will take a long time to reconfigure the routes of all devices. Different devices are placed in different areas, and there are a lot of modified devices at the same time, and the routing of device configurations in different areas may be different, which brings great difficulties and inconvenience to the upgrade and maintenance of the network.

Regarding how to quickly realize the configuration update of the routing equipment of a large-area device, no effective solution has been proposed yet.

Summary of the invention

In the first aspect, the present application provides a routing configuration method, which includes: receiving an update request of an access device, wherein the update request carries an area identifier of the access device; and is obtained from a regionalized static routing table Static routing information corresponding to the area identifier; carrying the static routing information in the response information, and replying the response information to the access device.

In a second aspect, a method for updating routing information is provided, including: sending an update request to a server, where the update request carries an area identifier; receiving response information returned by the server, wherein the response information carries There is static routing information corresponding to the area identifier; according to the static routing information, the routing information is updated.

In a third aspect, a routing configuration device is provided, which is located in a DHCP server and includes: a receiving module configured to receive an update request of an access device, where the update request carries an area identifier of the access device; The obtaining module is used to obtain the static routing information corresponding to the area identifier from the regionalized static routing table; the reply module is used to carry the static routing information in the response information and reply the response to the access device information.

According to a fourth aspect, there is provided a routing information update apparatus, which is located in an access device and includes: a sending module for sending an update request to a server, wherein the update request carries an area identifier; a receiving module is used for receiving The response information returned by the server, wherein the response information carries static routing information corresponding to the area identifier; an update module is used to update the routing information according to the static routing information.

According to a fifth aspect, a server device is provided, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the computer program, the following steps are implemented: receiving access A device update request, where the update request carries the area identifier of the access device; the static routing information corresponding to the area identifier is obtained from a regionalized static routing table; and the static routing information is carried in the response In the message, the response information is returned to the access device.

According to a sixth aspect, an access device is provided, including: a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the following steps are implemented: to the server Sending an update request, where the update request carries an area identifier; receiving response information returned by the server, wherein the response information carries static routing information corresponding to the area identifier; based on the static routing information To update routing information.

According to a seventh aspect, there is provided a non-volatile computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented: receiving an update request of an access device, wherein, the The update request carries the area identification of the access device; the static routing information corresponding to the area identification is obtained from the regionalized static routing table; the static routing information is carried in the response information to the access device Reply to the response message.

According to an eighth aspect, there is provided a non-volatile computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented: sending an update request to a server, wherein the update request Carries an area identifier; receives response information returned by the server, wherein the response information carries static routing information corresponding to the area identifier; and updates routing information according to the static routing information.

In a ninth aspect, a computer program product is provided, the computer program product including a computer program stored on a non-transitory computer-readable storage medium, the computer program including program instructions, when the program instructions are executed by a computer To enable the computer to execute the method described in the above aspects.

BRIEF DESCRIPTION

The drawings here are incorporated into and constitute a part of this specification, show embodiments consistent with the present invention, and are used together with the specification to explain the principles of the present invention.

In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required in the embodiments or the description of the prior art. Obviously, for those of ordinary skill in the art In other words, other drawings can be obtained based on these drawings without paying any creative labor.

FIG. 1 is a method flowchart of a route configuration method provided by an embodiment of the present application;

2 is a flowchart of a method for updating a route provided by an embodiment of the present application;

Figure 3 is a schematic diagram of an application scenario of regionalized routing configuration;

4 is a schematic diagram of packet interaction provided by an embodiment of the present application;

5 is a DHCP Option 168 message format provided by an embodiment of the present application;

6 is a structural block diagram of a routing configuration device (switching device and client) provided by an embodiment of this application;

7 is a structural block diagram of a route update device (DHCP server) provided by an embodiment of the present application.

detailed description

To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts fall within the protection scope of the present application.

In order to quickly realize the configuration update of the routing of large-area devices, a routing configuration and update method is proposed in this example. Specifically, the DHCP (Dynamic Host Configuration Protocol) standard protocol and option 121 (The ClasslessStaticRouteOption, rfc3442), add an option custom field, fill in the option custom field with information used to identify the device area, and use this information to distinguish the area identification of different devices. In the process of message dynamic interaction, the request message and response message are parsed and encapsulated to complete the setting update of the static routing tables of devices in different regions.

Specifically, as shown in FIG. 1, a routing configuration method is provided in this example, and may include the following steps: Step 101: Receive an update request of an access device, where the update request carries the access Area identification of the device; where the above update request can be option 121 field and custom field, where the custom field carries the area identification. In order to avoid adding extra bytes and causing the protocol to be modified, the above custom field can use the reserved field in the option field. For example, option 128-254 is a reserved type. You can select a type from the reserved type to fill in the area identification .

Step 102: Obtain the static routing information corresponding to the area identifier from the regionalized static routing table; where the regionalized static routing table may be pre-established, which saves time and realizes uniform update within the area. When establishing a regionalized static routing table, it may include: S1: Obtaining the regional identifier of each area within the management scope; S2: Configuring the corresponding static routing table for each area; S3: Using the static routing table configured in each area as the configuration Regionalized static routing table.

For example, it is divided into three areas, and area A, area B, and area C are used as the area identifiers of the access devices in the three areas. When configuring a static routing table, routing information entries are distinguished according to the planned different area identifiers. That is, you can configure your own static routing tables based on the planned area identification. For example: the routing table information of the three areas exemplified by the route listA, route listB, and route listC logos. The correspondence between the area ID and the routing table information is: area A->route listA, area B->route listB, area C ->route listC. Among them, the three routing tables are independent of each other. The routing information may be the same or different. The routing entries are configured according to the actual needs of the respective access device network.

When the routing information changes, modify the regionalized static routing table to update the routing information in the corresponding area.

Step 103: Carry the static routing information in the response information, and reply the response information to the access device.

Specifically, in carrying the static routing information in the response information, the static routing information corresponding to the area identifier may be filled in the option 121 field in the response message; the response message carrying the option 121 field may be used as the response information .

After receiving the response message, the access device can extract routing information from the option 121 field to update and configure the routing information.

The above is an explanation on the service side. A method for updating routing information is proposed for the access device side. As shown in FIG. 2, the method includes the following steps: Step 201: Send an update request to a server, where the update request Carrying an area identifier; Step 202: Receive response information returned by the server, where the response information carries static routing information corresponding to the area identifier; Step 203: Update routing information according to the static routing information .

In order to improve the update efficiency and avoid the routing table being occupied by a large number of residual routing entries, updating routing information based on static routing information may include: obtaining static routing information and currently stored routing information; combining static routing information and currently stored routing information Compare the information to determine the routing entry that needs to be added and the routing entry that needs to be deleted; update the currently stored routing information according to the routing entry that needs to be added and the routing entry that needs to be deleted, and use the updated routing information as the currently stored route information.

The above method will be described below in conjunction with a specific embodiment, but it is worth noting that this specific embodiment is only for better description of the present application, and does not constitute an undue limitation on the present application.

In order to quickly realize the configuration update of the routing of large-area devices, in this example, a method of regionally configured static routing of devices based on DHCP is proposed. Specifically, in the DHCP standard protocol and option 121 (The Classless Static Route Option, Based on rfc3442), an option custom field is added. The option custom field is filled with information for identifying the device area, and the area identification of different devices can be distinguished by the information.

During the dynamic interaction of DHCP messages, the option 121 and option custom fields of the request message and response message are parsed and encapsulated to complete the setting update of the static routing tables of devices in different regions.

In the process of implementation, only the regional routing information of the management DHCP server needs to be modified to complete the update of the static routing table of all access devices in the management area, which solves the problem when the static routing of large-scale access devices in the project changes. The huge technical and implementation difficulties that need to be modified one by one, save the time and labor cost in the operation and maintenance of equipment, and reduce the risk of manual configuration errors to communication.

Specifically, the option custom field is filled for the access device, the option 121 field is filled for the DHCP server according to the custom field of the request message, and the access device sets and updates the static route according to the option 121 field of the response message. Based on this, the method based on DHCP regionalized route configuration includes the following steps: Step 1: Configure the area identification information of the access device; wherein, the regionalized identification of the access device may be flexible according to the device workplace, access method, etc. Named; for example, log in to the access device and configure the area identifier belonging to the device. In this example, the name of the area where the access device is located is used as the identifier. Assuming that there are three areas of access device networks as shown in FIG. 2, area A, area B, and area C can be used as the area identifiers of the access devices in the three areas.

Step 2: Configure the DHCP Server regionalized static routing table.

Among them, DHCP Server configures a static routing table, and routing information entries are distinguished according to the planned different area identifiers. That is, you can configure your own static routing tables based on the planned area identification. As shown in FIG. 3, the route table information of the three areas exemplified in step 1 is identified by route listA, route listB, and routeC, and the corresponding relationship between the area identifier and the routing table information is: area A->route listA, area B- >route listB, area C->route listC. Among them, the three routing tables are independent of each other. The routing information may be the same or different. The routing entries are configured according to the actual needs of the respective access device network.

Step 3: Customize the reserved option field and fill format of DHCP protocol packets.

As shown in Figure 4, in the option field of the DHCP protocol data unit, option 128-254 is a reserved type. You can select a type from the reserved type to fill in the area identifier; among them, the message format supports integer, string, and text , Ipv4/ipv6 address, etc. In this example, option168 is used to fill the area identifier. The format of the message is string. The specific message format can be shown in Figure 5. The access device will carry option121 and option168 (the area identifier configured in step 1 is filled in). ) The protocol field initiates a request to the DHCP Server.

Step 4: The DHCP Server replies to routing information according to the area identifier.

That is, as shown in FIG. 4, after receiving the option 121 request from the access device, the DHCP server responds to the access device with corresponding routing information according to the area identifier in the option custom field.

Specifically, the DHCP Server receives the request from the access device, parses the option 168 field in the request message, obtains the area identifier where the access device is located, and finds the corresponding according to the regionalized static routing table configured in step 2 Static routing information, after filling the found static routing information into the option 121 field, reply to the access device with a response. That is, the request message with the area identifier area A, the content filled with option 121 of the response message is route listA, the request message area with the area identifier is area B, and the content filled with option 121 of the response message is route listB, the area identifier For the request message of area C, the content of option 121 of the response message is route listC, the request message of the area identifier is not configured, and the content of option 121 of the response message is default route.

Step 5: The access device analyzes, compares, updates, and records routing information.

As shown in FIG. 4, after receiving the reply message from the DHCP server, the access device processes the option 121 field in the message to obtain the latest static routing information and update and record the latest routing information. Specifically, after receiving the reply from the DHCP server, the access device parses the option 121 field of the Ack message to obtain the latest static routing information.

In order to avoid that the routing table is occupied by a large number of residual routing entries, after the latest static routing information is obtained, the last option routing information of 121 can be obtained from the record, and the recorded routing information is compared with the latest routing information to obtain the need for new Add routing entries and routing entries that need to be deleted, and update the records to the latest routing data. For example: the route entries recorded in T1 times are R1, R2, R3, and the latest route entries obtained in T1+1 times are R2, R3, R4, then T1+1 times need to delete the R1 route entry and add two route entries R3, R4 And update the record to R2, R3, R4.

Step 6: Set up a static route to update the access device.

According to the updated routing information, call the relevant interface of the routing module to add and delete corresponding routing entries.

In the above example, based on the DHCP standard protocol and option 121 (The Classless Static Route Option, rfc3442), an option custom field is added, and the information used to identify the device area is filled in the option custom field. Distinguish the area identification of different devices. During the dynamic interaction of DHCP messages, the option 121 and option custom fields of the request message and response message are parsed and encapsulated to complete the setting update of the static routing tables of devices in different regions. In this way, in the process of implementation, only need to modify the regional routing information of the management end DHCP Server, you can complete the update of the static routing table of all access devices in the management area, which solves the problem of large area access device static routing changes in the project At this time, the huge technical and implementation difficulties that need to be modified one by one need to be saved, which saves time and labor costs during equipment operation and maintenance, and reduces the risk of manual configuration errors to communication.

Based on the same inventive concept, an embodiment of the present invention also provides a routing configuration device, as described in the following embodiments. Since the principle of the route configuration device to solve the problem is similar to the route configuration method, the implementation of the route configuration device can refer to the implementation of the route configuration method, and the repetition is not repeated. As used below, the term "unit" or "module" may implement a combination of software and/or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation of hardware or a combination of software and hardware is also possible and conceived. FIG. 6 is a structural block diagram of a routing configuration device according to an embodiment of the present invention. As shown in FIG. 6, it may include a receiving module 601, an obtaining module 602, and a reply module 603. The structure will be described below.

The receiving module 601 is used to receive an update request of the access device, where the update request carries the area identifier of the access device; the obtaining module 602 is used to obtain the area identifier from the regionalized static routing table Corresponding static routing information; the reply module 603 is used to carry the static routing information in the response information and reply the response information to the access device.

In one embodiment, the above-mentioned routing configuration device can also specifically obtain the area identifiers of each area within the management range; configure corresponding static routing tables for each area; and use the static routing tables configured in each area as the configured regionalized static routing table .

In one embodiment, the above update request may be an option 121 field and a custom field, where the custom field carries an area identifier.

In one embodiment, the reply module 603 may specifically fill the static routing information corresponding to the area identifier into the option 121 field in the response message; and use the response message carrying the option 121 field as the response information.

An embodiment of the present invention also provides a routing information updating device. As shown in FIG. 7, it includes: a sending module 701, which is used to send an update request to a server, where the update request carries an area identifier; a receiving module 702, used to receive response information returned by the server, where the response information carries static routing information corresponding to the area identifier; and an update module 703 is used to update routing information according to the static routing information.

In one embodiment, the update module 703 can specifically obtain the static routing information and the currently stored routing information; compare the static routing information with the currently stored routing information to determine the routing entries that need to be added and the routes that need to be deleted Entry; update the currently stored routing information according to the routing entry that needs to be added and the routing entry that needs to be deleted, and use the updated routing information as the currently stored routing information.

In one embodiment, the above update request may be a message carrying an option 121 field and a custom field, where the custom field carries an area identifier.

In an embodiment, the response information may be a message carrying the option 121 field of the static routing information corresponding to the area identifier.

In the above example, the update request carries the area ID, and the routing information is generated according to the area ID in the regionalized static routing table. After receiving the access device's request carrying the area ID, the area is returned to the access device Identify the corresponding routing information, so as to update the routing information of the access device. In this way, only the regional routing information of the management end needs to be modified to complete the update of the static routing table of all access devices in the management area. The above solution solves the problem of low update efficiency of the existing regional routing update. The technical effect of effectively improving the efficiency of regional routing update.

In an embodiment of the present invention, a non-volatile computer-readable storage medium is also provided. The non-volatile computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to execute each of the above Aspect of the method.

In an embodiment of the present invention, a computer program product is also provided. The computer program product includes a computer program stored on a non-volatile computer-readable storage medium. The computer program includes program instructions. When the program instructions When executed by a computer, the computer is caused to perform the methods described in the above aspects.

It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these There is any such actual relationship or order between entities or operations. Moreover, the terms "include", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also those not explicitly listed Or other elements that are inherent to this process, method, article, or equipment. Without more restrictions, the element defined by the sentence "include one..." does not exclude that there are other identical elements in the process, method, article or equipment that includes the element.

The above are only specific embodiments of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown in this document, but should conform to the widest scope consistent with the principles and novel features applied in this document.

Claims

A routing configuration method, which includes:

Receiving an update request of the access device, where the update request carries the area identifier of the access device;

Acquiring static routing information corresponding to the area identifier from the regionalized static routing table;

The static routing information is carried in the response information, and the response information is returned to the access device.
The method of claim 1, further comprising:

Obtain the area identification of each area within the management scope;

Configure the corresponding static routing table for each area;

Use the static routing table configured in each area as the configured regional static routing table.
The method according to claim 1, wherein the update request is an option 121 field and a custom field, wherein the custom field carries an area identifier.
The method according to claim 3, wherein carrying the static routing information in the response information includes:

Fill the static routing information corresponding to the area identifier into the option 121 field in the response message;

A response message carrying the option 121 field is used as the response information.
A method for updating routing information, including:

Sending an update request to the server, where the update request carries an area identifier;

Receiving response information returned by the server, where the response information carries static routing information corresponding to the area identifier;

Update routing information according to the static routing information.
The method according to claim 5, wherein the updating of routing information according to the static routing information includes:

Obtain the static routing information and the currently stored routing information;

Comparing the static routing information with the currently stored routing information to determine the routing entries that need to be added and the routing entries that need to be deleted;

According to the routing entries that need to be added and the routing entries that need to be deleted, the currently stored routing information is updated, and the updated routing information is used as the currently stored routing information.
The method according to claim 5, wherein the update request is a message carrying an option 121 field and a custom field, wherein the custom field carries an area identifier.
The method according to claim 7, wherein the response information is a message carrying the option 121 field of the static routing information corresponding to the filled area identifier.
A routing configuration device, which is located in the DHCP Server and includes:

A receiving module, configured to receive an update request of the access device, wherein the update request carries the area identifier of the access device;

An obtaining module, configured to obtain static routing information corresponding to the area identifier from the regionalized static routing table;

The reply module is used to carry the static routing information in the reply information and reply the reply information to the access device.
An apparatus for updating routing information, which is located in an access device and includes:

A sending module, configured to send an update request to the server, where the update request carries an area identifier;

A receiving module, configured to receive the response information returned by the server, wherein the response information carries static routing information corresponding to the area identifier;

The updating module is used for updating routing information according to the static routing information.
A server device, including: a memory, a processor, and a computer program stored on the memory and runable on the processor, wherein the processor implements the computer program when implementing the computer program according to any one of claims 1 to 4. Describe the method steps.
An access device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor realizes any one of claims 5 to 8 when the processor executes the computer program The steps of the method.
A non-volatile computer-readable storage medium on which a computer program is stored, wherein when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 4 are implemented.
A non-volatile computer-readable storage medium on which a computer program is stored, wherein when the computer program is executed by a processor, the steps of the method according to any one of claims 5 to 8 are realized.