CN114006858A

CN114006858A - IPv6 information discovery method, device, network node and storage medium

Info

Publication number: CN114006858A
Application number: CN202010670479.5A
Authority: CN
Inventors: 李江; 付俊; 李肖肖; 陈福祥; 程叶霞
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2022-02-01

Abstract

The application discloses an IPv6 information discovery method, device, network node and storage medium. The method comprises the following steps: a first network node sends a Router Advertisement (RA) message and reports own IPv6 information to a second network node; wherein, the RA message carries IPv6 address information of a second network node; the second network node is for managing IPv6 information in the network.

Description

IPv6 information discovery method, device, network node and storage medium

Technical Field

The present application relates to the field of Internet Protocol (IP) networks, and in particular, to a method, an apparatus, a network node, and a storage medium for discovering IPv6 information.

Background

With the rapid development of the fifth generation mobile communication technology (5G) network and the application of the internet of things, the deployment and application of massive terminal devices and system platforms also provide challenges for asset management in the IPv6 network space. The address length under the IPv6 network space is expanded to 128 bits, and the traditional asset management mode for IPv4 cannot meet the requirement of IPv6 asset management.

Disclosure of Invention

In order to solve the related technical problem, embodiments of the present application provide a method, an apparatus, a network node, and a storage medium for discovering IPv6 information.

The technical scheme of the embodiment of the application is realized as follows:

the embodiment of the application provides an IPv6 information discovery method, which is applied to a first network node and comprises the following steps:

sending a Router Advertisement (RA) message and reporting own IPv6 information to a second network node; wherein the content of the first and second substances,

the RA message carries IPv6 address information of a second network node; the second network node is for managing IPv6 information in the network.

In the above scheme, the method further comprises:

receiving an RA message; the received RA message carries IPv6 address information of the second network node;

and reporting the own IPv6 information to the second network node based on the IPv6 address information of the second network node.

In the above scheme, after receiving the RA packet and waiting for the first duration, reporting the IPv6 information of the RA packet to the second network node based on the IPv6 address information of the second network node.

In the above solution, the IPv6 address information of the second network node is carried in an optional part of the RA packet.

In the above scheme, the option portion of the RA packet further carries the effective duration of the IPv6 address information of the second network node.

The embodiment of the present application further provides an IPv6 information discovery method, which is applied to a third network node, and includes:

receiving an RA message; the RA message carries IPv6 address information of a second network node; the second network node is used for managing IPv6 information in the network;

and reporting the IPv6 information of the second network node to the second network node.

In the above scheme, after receiving the RA packet and waiting for the second duration, reporting the IPv6 information of the RA packet to the second network node based on the IPv6 address information of the second network node.

In the above solution, the IPv6 address information of the second network node is carried in the option portion of the RA packet.

The embodiment of the present application further provides an IPv6 information discovery method, which is applied to a second network node, and includes:

receiving own IPv6 information reported by other network nodes in the network based on the acquired IPv6 address information of the second network node; the second network node is used for managing IPv6 information in the network; the IPv6 address information of the second network node is carried in the RA message;

and storing the IPv6 information of the other network nodes.

In the above scheme, the method further comprises:

acquiring the moment of receiving the IPv6 information sent by the other network nodes;

and saving the time for receiving the IPv6 information sent by the other network nodes.

The embodiment of the present application further provides an IPv6 information discovery apparatus, including:

a sending unit, configured to send an RA packet;

the first reporting unit is used for reporting the IPv6 information of the first network node to the second network node; wherein the content of the first and second substances,

a second receiving unit, configured to receive an RA packet; the RA message carries IPv6 address information of a second network node; the second network node is used for managing IPv6 information in the network;

and the second reporting unit is configured to report the IPv6 information of the second network node to the second network node.

the third receiving unit is used for receiving own IPv6 information reported by other network nodes in the network based on the acquired IPv6 address information of the second network node; the second network node is used for managing IPv6 information in the network; the IPv6 address information of the second network node is carried in the RA message;

and the processing unit is used for storing the IPv6 information of the other network nodes.

An embodiment of the present application further provides a first network node, including: a first processor and a first communication interface; wherein the content of the first and second substances,

the first communication interface is used for sending an RA message and reporting IPv6 information of the first network node to a second network node; wherein the content of the first and second substances,

An embodiment of the present application further provides a third network node, including: a second processor and a second communication interface; wherein the content of the first and second substances,

the second communication interface is configured to:

and reporting the IPv6 information of the third network node to the second network node.

An embodiment of the present application further provides a second network node, including:

the third communication interface is used for receiving self IPv6 information reported by other network nodes in the network based on the acquired IPv6 address information of the second network node; the second network node is used for managing IPv6 information in the network; the IPv6 address information of the second network node is carried in the RA message;

and the third processor is used for storing the IPv6 information of the other network nodes.

An embodiment of the present application further provides a first network node, including: a first processor and a first memory for storing a computer program capable of running on the processor,

wherein the first processor is configured to execute the steps of any of the above-mentioned methods at the first network node side when running the computer program.

An embodiment of the present application further provides a third network node, including: a second processor and a second memory for storing a computer program capable of running on the processor,

wherein the second processor is configured to execute the steps of any of the methods at the third network node side when running the computer program.

An embodiment of the present application further provides a second network node, including: a third processor and a third memory for storing a computer program capable of running on the processor,

wherein the third processor is configured to, when running the computer program, perform the steps of any of the above-mentioned methods at the second network node side.

An embodiment of the present application further provides a storage medium, where a computer program is stored, and when executed by a processor, the computer program implements the steps of any method on the first network node side, or implements the steps of any method on the third network node side, or implements the steps of any method on the second network node side.

According to the IPv6 information discovery method, device, network node and storage medium provided by the embodiment of the application, the first network node sends an RA message and reports own IPv6 information to the second network node; the RA message carries IPv6 address information of a second network node; the second network node is used for managing IPv6 information in the network; and the third network node receives the RA message; the second network node is used for managing IPv6 information in the network; reporting own IPv6 information to the second network node; the method comprises the steps that a second network node receives own IPv6 information reported by other network nodes in a network based on acquired IPv6 address information of the second network node; and storing the IPv6 information of the other network nodes, and gradually announcing the IPv6 address of the second network node for managing the IPv6 information in the network through the routing equipment, so that a large number of configuration processes are avoided, the complex operation and maintenance work is avoided while asset management is optimized, and the method can be suitable for a general IPv6 scene.

Drawings

Fig. 1 is a flowchart illustrating a method for discovering IPv6 information according to an embodiment of the present application;

fig. 2 is a schematic flowchart of a process of acquiring, by a host device, routing information of a network where the host device is located according to an embodiment of the present application;

fig. 3 is a schematic diagram of an RA message format according to an embodiment of the present application;

FIG. 4 is a diagram illustrating the format of an option portion;

FIG. 5 is a schematic format diagram of an option part according to an embodiment of the present application;

fig. 6 is a flowchart illustrating another IPv6 information discovery method according to an embodiment of the present application;

fig. 7 is a flowchart illustrating a third method for discovering IPv6 information according to an embodiment of the present application;

FIG. 8 is a schematic flow chart of a network structure and an IPv6 asset automatic discovery method according to an embodiment of the application;

fig. 9 is a schematic structural diagram of an IPv6 information discovery apparatus according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of another IPv6 information discovery apparatus according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a third IPv6 information discovery apparatus according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a first network node according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a third network node according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a second network node according to an embodiment of the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples.

The key difficulty of the IPv6 asset management is how to utilize limited resources, accurately grasp the change of the asset state within an acceptable time range and effectively monitor the IPv6 asset.

Since the length of the IPv6 address is 128 bits, if a scanning mode of traversing the address space in the IPv4 scenario is used, it takes hundreds of years to complete one scan, and therefore, some techniques are usually used to reduce the IPv6 address space to be detected, so as to speed up the address discovery.

Technically, it is difficult to effectively manage the IPv6 address in a single way. In the related art, various IPv6 address discovery/scanning technologies are proposed, and a typical implementation method includes: domain Name System (DNS) reverse resolution method, addressing rule method and flow analysis method. See table 1 for an introduction of these three implementations.

TABLE 1

As can be seen from table 1, the DNS reverse parsing method and the addressing rule method are only suitable for specific scenarios, and the traffic analysis rule requires additional deployment of network traffic capturing and analyzing nodes, which may generate a large amount of deployment and operation and maintenance workload while performing IPv6 asset management, that is, the three implementation methods may assist in managing IPv6 assets in some specific scenarios. Although the three implementation methods have been greatly improved in time consumption compared with a brute force scanning method, the asset management of IPv6 in the three implementation methods is not universally applicable, that is, none of the three implementation methods is applicable to a general scene in the related art.

Based on this, in various embodiments of the present application, an IPv6 asset data management node is provided in the network, such that the network node is actively reporting its IPv6 asset (which may also be referred to as IPv6 information) to the asset data management node through Neighbor Discovery Protocol (NDP).

The terms used in the examples of the present application are defined as follows:

node (may also be referred to as network node): a network device having an IP address;

a host device: a terminal device not having a route forwarding function;

routing device (which may also be referred to as router): network equipment with a route forwarding function;

asset data management node: a network device with IPv6 information collection and management capability and being reachable with node network

A node is a collection of host devices and routing devices and may of course also comprise an asset data management node.

The nodes, host devices, routing devices, asset data management nodes defined above all have IPv6 addresses.

An embodiment of the present application provides an IPv6 information discovery method, which is applied to a first network node, and as shown in fig. 1, the method includes:

step 101: sending an RA message;

step 102: reporting own IPv6 information to a second network node; wherein the content of the first and second substances,

Here, in practical applications, the first network node may be a routing device in a network.

In the implementation of the solution of the embodiment of the present application, on a large-scale network, the Pv6 address information of the second network node may be configured in advance on a routing device of a backbone network or a metropolitan area network in the network, and the routing device may announce the IPv6 address information of the second network node to the network node in the network from top to bottom by using an RA packet, so that all other IPv6 nodes in the network can be notified and report their own IPv6 information to a specified address.

In practical application, the second network node may also be referred to as an IPv6 asset data management node.

In a local area network supporting IPv6, when a new host device accesses the network, as shown in FIG. 2, in order to obtain the routing information of the network, the host sends a Router Request (RS) multicast packet, namely an RS message, to FF02: (all routing devices in the local link), and after receiving the RS packet, the Router replies an RA unicast packet, namely an RA message; the RA message includes information such as a routing address, a routing prefix, a Maximum Transmission Unit (MTU), and a reversible dns (rdns). In the implementation of the present application, the RA packet also carries IPv6 address information of the second network node.

Wherein, when the host device is not configured with the unicast address, the RS message is sent. The RS message is helpful for the rapid automatic configuration of the host equipment, and the routing equipment does not need to wait for the RA message periodically sent by the routing equipment.

The routing device may periodically announce its presence and configured link and network parameters via RA messages, and may also respond to RS messages via RA messages.

In practical application, in step 101, the sending of the RA packet may be periodically sending an RA packet carrying IPv6 address information of the second network node, or sending an RA packet carrying IPv6 address information of the second network node after receiving an RS packet of the host device.

The first network node reports its IPv6 information to the second network node, which may also be understood as the first network node reporting its IPv6 information to the second network node.

In actual application, the execution sequence of the step 101 and the step 102 is not sequential, that is, the step 101 may be executed first, and then the step 102 may be executed; step 102 may be performed first, and then step 101 may be performed.

The IPv6 information may include globally unique unicast IPv6 addresses, local link IPv6 addresses, etc., that is, the IPv6 information may be understood as a set of information.

In actual application, in step 102, the first network node sends a packet (which may be a control packet or a data packet) carrying the IPv6 information of the first network node; the protocol for carrying the packet may be selected according to a specific scenario, that is, the packet may be sent based on multiple types of protocols, such as Internet (Internet) control message protocol (ICMP), hypertext transfer protocol (HTTP), and the like, which is not limited in this embodiment of the present application.

In practical application, the first network node may be a routing device of a backbone network or a metropolitan area network in a network, and in this case, since the IPv6 address information of the second network node is configured on the routing devices, the first network node only needs to send an RA packet to a next-level routing device and report its IPv6 information to the second network node.

The first network node may also be other routing equipment except for routing equipment of a backbone network or a metropolitan area network, and at this time, the first network node needs to acquire an RA message from other routing equipment so as to acquire IPv6 address information of the second network node, so that the acquired IPv6 address information of the second network node is used to generate the RA message, and the second network node reports its own IPv6 information to the second network node.

Based on this, in an embodiment, the method may further include:

In practical application, in order to avoid that a large number of network nodes report IPv6 information to the second network node at a centralized time and the second network node cannot process the information, thereby forming a distributed denial of service attack, a time duration may be set, and after receiving an RA packet, the first network node waits for a time duration and then reports its own IPv6 information.

Based on this, in an embodiment, after the first network node receives the RA packet and waits for the first duration, the first network node reports its IPv6 information to the second network node based on the IPv6 address information of the second network node.

The first time length may be determined as needed, for example, the first time length may be determined by using a random algorithm, and for example, a time length may be set in the first network node as the first time length in advance, which is not limited in this embodiment of the present application.

Fig. 3 shows the format of the RA message. Wherein, Type (Type) is 134. As shown in fig. 3, the RA packet may carry multiple option portions, and the format of each option portion is shown in fig. 4. In this embodiment of the present application, the RA packet of the NDP may be extended, and specifically, an option portion of the RA packet is extended, that is, an option carrying the IPv6 address information of the second network node is newly added, as shown in fig. 5.

The Type may be defined as needed to identify the second network node, and the length may be 8 bits.

Length (length) represents the length of a packet, which may be set to 3, indicating that the extended RA message length is 3, 8 bytes long.

The validity duration (Valid Lifetime) represents the validity time of the IPv6 address of the second network node for survival, and accordingly, the waiting duration should be in the range from 0 to the validity duration.

Add _ mng _ IP represents the IPv6 address of the second network node.

As can be seen from the above description, the option portion of the RA packet may also carry the Valid duration of the IPv6 address information of the second network node, that is, Valid Lifetime.

For the host equipment in the network, after receiving the RA message, only the IPv6 information of the host equipment needs to be reported.

Correspondingly, an embodiment of the present application further provides an IPv6 information discovery method, which is applied to a third network node, and as shown in fig. 6, the method includes:

step 601: receiving an RA message; the RA message carries IPv6 address information of a second network node; the second network node is used for managing IPv6 information in the network;

step 602: and reporting the IPv6 information of the second network node to the second network node.

Here, in practical applications, the third network node may be a host device in a network.

The third network node reports its IPv6 information to the second network node, which may also be understood as the third network node reporting its IPv6 information to the second network node.

In actual application, in step 602, the second network node sends a packet (which may be a control packet or a data packet) carrying the IPv6 information of the second network node; the protocol for carrying the packet may be selected according to a specific scenario, that is, the packet may be sent based on multiple types of protocols, such as ICMP, HTTP, and the like, which is not limited in this embodiment of the present application.

In practical application, in order to avoid that a large number of network nodes report IPv6 information to the second network node at a centralized time and the second network node cannot process the information, thereby forming a distributed denial of service attack, a time duration may be set, and after receiving an RA packet, the second network node waits for a time duration and then reports its own IPv6 information.

Based on this, in an embodiment, after the third network node receives the RA packet and waits for the second duration, the third network node reports its own IPv6 information to the second network node based on the IPv6 address information of the second network node.

The second time duration may be determined as needed, for example, a random algorithm may be used to determine the second time duration, and for example, a time duration may be set in the third network node in advance as the second time duration, which is not limited in this embodiment of the present application.

Wherein the format of the RA message can be understood with reference to the previous description,

correspondingly, an embodiment of the present application further provides an IPv6 information discovery method, which is applied to a second network node, and as shown in fig. 7, the method includes:

step 701: receiving own IPv6 information reported by other network nodes in the network based on the acquired IPv6 address information of the second network node; the second network node is used for managing IPv6 information in the network; the IPv6 address information of the second network node is carried in the RA message;

step 702: and storing the IPv6 information of the other network nodes.

In practical application, the other network nodes may include a routing device and a host device.

In actual application, in order to judge the survival or failure of the stored IPv6 addresses (which may also be referred to as screening) and screen valid IPv6 addresses from the addresses, the time when the IPv6 information is received may be recorded.

Based on this, in an embodiment, the method may further include:

acquiring (or recording) the time for receiving the IPv6 information sent by the other network node;

In this way, the second network node determines the survival or failure of the corresponding IPv6 address according to the corresponding receiving time, and filters a valid IPv6 address from the determined survival or failure, that is, the receiving time of the IPv6 information may be used to determine the survival or failure of the IPv6 address, and filter a valid IPv6 address from the determined survival or failure.

According to the IPv6 information discovery method provided by the embodiment of the application, a first network node sends an RA message and reports own IPv6 information to a second network node; the RA message carries IPv6 address information of a second network node; the second network node is used for managing IPv6 information in the network; and the third network node receives the RA message; the second network node is used for managing IPv6 information in the network; reporting own IPv6 information to the second network node; the method comprises the steps that a second network node receives own IPv6 information reported by other network nodes in a network based on acquired IPv6 address information of the second network node; and storing the IPv6 information of the other network nodes, and gradually announcing the IPv6 address of the second network node for managing the IPv6 information in the network through the routing equipment, so that a large number of configuration processes are avoided, the complex operation and maintenance work is avoided while asset management is optimized, and the method can be suitable for a general IPv6 scene.

The present application will be described in further detail with reference to the following application examples.

In the embodiment of the application, as shown in fig. 8, the network architecture comprises two levels of routing devices, a host device and an IPv6 asset data management node.

Here, it should be noted that, in practical applications, the network architecture may include more levels of routing devices.

In the following description, the IPv6 asset data management node is referred to as add _ mng _ host, and the IPv6 address of the IPv6 asset data management node is referred to as add _ mng _ IP; IPv6 information of a network node is referred to as host _ info.

With reference to fig. 8, the IPv6 asset automatic discovery method according to the embodiment of the present application includes the following steps:

step 1: the routing equipment announces add _ mng _ IP of the add _ mng _ host through the RA message;

here, the first and second liquid crystal display panels are,

step 2: the network node H receives the RA message containing the add _ mng _ IP and extracts the add _ mng _ IP;

and step 3: the network node H waits for a random time length t, sends a data packet to the add _ mng _ host and actively reports the host _ info of the network node H;

and 4, step 4: if the network node H in step 3 is a routing device, in addition to performing operations according to step 3, it needs to forward add _ mng _ IP of the RA packet advertisement add _ mng _ host to all downlink interfaces, so that it is ensured that the extended RA packet carrying the add _ mng _ IP can be transferred along the routing device from top to bottom.

And 5: and the add _ mng _ host receives the data packet containing the host _ info, extracts the host _ info from the data packet, and records and stores the host _ info and the receiving time T (host _ info) of the data packet.

When the add _ mn _ IP of the add _ mn _ host is advertised by using the RA packet, the RA packet extension of the NDP is used, specifically, the option part of the RA packet is extended, an option of the add _ mn _ IP carrying the add _ mn _ host is newly added, and the newly added option format is shown in fig. 5.

The host _ info carries the self information of the network node, and is an information set, and the information set comprises a local link IPv6 address, a globally unique unicast IPv6 address and the like.

Through the above operation, the IPv6 information of all network nodes in the network can be collected, and management of IPv6 addresses of the entire network is formed at add _ mng _ host. Meanwhile, in the step, the receiving time T (host _ info) of the data packet is recorded, and the method can be used for judging, screening and screening the alive and failed IPv6 addresses.

By adopting the scheme of the application embodiment, when the add _ mng _ IP of the add _ mng _ host changes, the information only needs to be reconfigured on the upper-level router (i.e. the upper-level router in the flow chart), and finally the new add _ mng _ IP can be diffused step by step to the whole network needing to be managed by the upper-level router through the expanded RA data packet.

When the network architecture is actually applied, in a local area network supporting IPv6, when a host device is newly accessed, address detection is performed based on the protocol flow of NDP, so as to ensure that the newly accessed host device obtains a reasonable IPv6 address. The process from the access of the newly accessed host device to the IPv6 local area network to the acquisition of the IPv6 address comprises the following steps:

step 1: the newly accessed host equipment obtains a local link IPv6 address by using a repeated address detection (DAD) mode;

step 2: the newly accessed host equipment obtains routing information;

and step 3: the newly accessed host equipment obtains neighbor information;

and 4, step 4: the newly accessed host equipment obtains a global unicast IPv6 address by using a DAD mode;

and 5: the newly accessed host device advertises its own IPv6 address.

Here, the specific flow from the access of the newly accessed host device to the acquisition of the IPv6 address from the IPv6 lan can be understood with reference to the related art, and is not described here again.

As can be seen from the above description, the scheme in the embodiment of the present application is an IPv6 asset automation management method based on a protocol, and in the scheme in the embodiment of the present application, an IPv6 asset data management node is provided, which is used to collect information actively reported by IPv6 assets, and implement management on IPv6 assets.

Specifically, through expanding NDP, the IPv6 address of the IPv6 asset data management node is announced to network nodes (including routing equipment and host equipment) step by step from the routing equipment (an option part of an expanded RA message is added, and an option part carrying IPv6 asset data management node address information is added); after knowing the IPv6 address of the IPv6 asset data management node, the network node reports its own IPv6 information to the address.

Compared with the IPv6 address scanning method in the related technology, the scheme provided by the embodiment of the application is short in time consumption and strong in pertinence; compared with the method listed in table 1 in the related art, the scheme of the embodiment of the application is applicable to a general IPv6 scenario. In addition, the information of the IPv6 asset data management node is announced step by step through the router, so that a large number of configuration processes are avoided, and complicated operation and maintenance work is avoided while asset management is optimized.

In order to implement the method according to the embodiment of the present application, an IPv6 information discovery apparatus is further provided in the embodiment of the present application, and as shown in fig. 9, the apparatus includes:

a sending unit 901, configured to send an RA packet;

a first reporting unit 902, configured to report, to a second network node, IPv6 information of the first network node; wherein the content of the first and second substances,

In an embodiment, the apparatus may further include:

a first receiving unit, configured to receive an RA packet; the received RA message carries IPv6 address information of the second network node;

the first reporting unit 902 is configured to report, to the second network node, IPv6 information of itself based on the IPv6 address information of the second network node.

In an embodiment, the first reporting unit 902 is further configured to obtain, from an RA message, IPv6 address information of the second network node.

In an embodiment, the first reporting unit 902 is specifically configured to:

and after receiving the RA message and waiting for the first duration, reporting the IPv6 information of the RA message to the second network node based on the IPv6 address information of the second network node.

In practical application, the sending unit 901 and the first receiving unit may be implemented by a communication interface in the IPv6 information discovery apparatus; the first reporting unit 902 may be implemented by a processor in the IPv6 information discovery apparatus in combination with a communication interface.

In order to implement the method on the third network node side in the embodiment of the present application, an IPv6 information discovery apparatus is further provided in the embodiment of the present application, and is disposed on the third network node, as shown in fig. 10, and the apparatus includes:

a second receiving unit 1001, configured to receive an RA packet; the RA message carries IPv6 address information of a second network node; the second network node is used for managing IPv6 information in the network;

a second reporting unit 1002, configured to report IPv6 information of the second network node to the second network node.

In an embodiment, the second reporting unit 1002 is further configured to obtain, from an RA message, IPv6 address information of the second network node.

In an embodiment, the second reporting unit 1002 is specifically configured to:

and after receiving the RA message and waiting for a second time, reporting the IPv6 information of the RA message to the second network node based on the IPv6 address information of the second network node.

In practical applications, the second receiving unit 1001 may be implemented by a communication interface in the IPv6 information discovery apparatus; the second reporting unit 1002 may be implemented by a processor in the IPv6 information discovery apparatus in combination with a communication interface.

In order to implement the method on the second network node side in the embodiment of the present application, an IPv6 information discovery apparatus is further provided in the embodiment of the present application, and is disposed on the second network node, as shown in fig. 11, the apparatus includes:

a third receiving unit 1101, configured to receive IPv6 information of the network node itself, where the IPv6 address information of the second network node is reported by other network nodes in the network based on the obtained IPv6 address information; the second network node is used for managing IPv6 information in the network; the IPv6 address information of the second network node is carried in the RA message;

a processing unit 1102, configured to store IPv6 information of the other network node.

In an embodiment, the apparatus may further include:

an obtaining unit, configured to obtain a time when the IPv6 information sent by the other network node is received;

the processing unit 1102 is configured to store a time when the IPv6 information sent by the other network node is received.

In practical applications, the third receiving unit 1101 may be implemented by a communication interface in the IPv6 information discovery apparatus; the processing unit 1102 and the obtaining unit may be implemented by a processor in an IPv6 information discovery apparatus in conjunction with a communication interface.

It should be noted that: in the IPv6 information discovery apparatus provided in the above embodiment, when performing IPv6 information discovery, only the above-mentioned division of each program module is taken as an example, and in practical applications, the above-mentioned processing allocation may be completed by different program modules according to needs, that is, the internal structure of the apparatus may be divided into different program modules to complete all or part of the above-mentioned processing. In addition, the IPv6 information discovery apparatus provided in the foregoing embodiment and the IPv6 information discovery method embodiment belong to the same concept, and specific implementation processes thereof are described in the method embodiment in detail, and are not described herein again.

Based on the hardware implementation of the program module, and in order to implement the method on the first network node side in the embodiment of the present application, an embodiment of the present application further provides a first network node, and as shown in fig. 12, the first network node 1200 includes:

a first communication interface 1201 capable of performing information interaction with other network nodes;

the first processor 1202 is connected to the first communication interface 1201 to implement information interaction with other network nodes, and is configured to execute a method provided by one or more technical solutions of the first network node side when running a computer program. And the computer program is stored on the first memory 1203.

Specifically, the first communication interface 1201 is configured to send an RA packet and report IPv6 information of the first network node to a second network node; wherein the content of the first and second substances,

In an embodiment, the first communication interface 1201 is further configured to receive an RA packet; the received RA message carries IPv6 address information of the second network node;

the first communication interface 1201 is configured to report, to the second network node, IPv6 information of the first communication node based on the IPv6 address information of the second network node.

In an embodiment, the first processor 1202 is further configured to obtain IPv6 address information of the second network node from an RA packet.

In an embodiment, the first communication interface 1201 is specifically configured to:

and after receiving an RA message and waiting for a first duration, reporting the IPv6 information of the first communication node to a second network node through the first communication interface 1201 based on the IPv6 address information of the second network node.

It should be noted that: the specific processing procedures of the first processor 1202 and the first communication interface 1201 can be understood with reference to the methods described above.

Of course, in practice, the various components in the first network node 1200 are coupled together by a bus system 1204. It is understood that the bus system 1204 is used to enable connective communication between these components. The bus system 1204 includes a power bus, a control bus, and a status signal bus, in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 1204 in fig. 12.

The first memory 1203 in an embodiment of the present application is used for storing various types of data to support the operation of the first network node 1200. Examples of such data include: any computer program for operating on the first network node 1200.

The method disclosed in the embodiments of the present application can be applied to the first processor 1202, or implemented by the first processor 1202. The first processor 1202 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the first processor 1202. The first Processor 1202 may be a general purpose Processor, a Digital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The first processor 1202 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the first memory 1203, and the first processor 1202 reads the information in the first memory 1203 to implement the steps of the foregoing method in combination with the hardware thereof.

In an exemplary embodiment, the first network node 1200 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, Micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.

Based on the hardware implementation of the program module, and in order to implement the method on the third network node side in the embodiment of the present application, an embodiment of the present application further provides a third network node, as shown in fig. 13, where the third network node 1300 includes:

the second communication interface 1301 can perform information interaction with other network nodes;

the second processor 1302 is connected to the second communication interface 1301 to implement information interaction with other network nodes, and is configured to execute the method provided by one or more technical solutions of the third network node side when running a computer program. And the computer program is stored on the second memory 1303.

Specifically, the second communication interface 1301 is configured to:

In an embodiment, the second processor 1302 is configured to obtain, from an RA packet, IPv6 address information of the second network node.

In an embodiment, the second communication interface 1301 is configured to:

and after receiving an RA message and waiting for a second duration, reporting the IPv6 information of the third network node to the second network node through the second communication interface 1301 based on the IPv6 address information of the second network node.

It should be noted that: the specific processing procedures of the second processor 1302 and the second communication interface 1301 can be understood with reference to the methods described above.

Of course, in practice, the various components in the third network node 1300 are coupled together by a bus system 1304. It is understood that the bus system 1304 is used to enable connective communication between these components. The bus system 1304 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 13 as the bus system 1304.

The second memory 1303 in the embodiments of the present application is used to store various types of data to support the operation of the third network node 1300. Examples of such data include: any computer program for operating on the third network node 1300.

The method disclosed in the embodiments of the present application may be applied to the second processor 1302, or implemented by the second processor 1302. The second processor 1302 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by an integrated logic circuit of hardware or an instruction in the form of software in the second processor 1302. The second processor 1302 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The second processor 1302 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the second memory 1303, and the second processor 1302 reads information in the second memory 1303, and completes the steps of the foregoing method in combination with hardware thereof.

In an exemplary embodiment, the third network node 1300 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components for performing the aforementioned methods.

Based on the hardware implementation of the program module, and in order to implement the method at the second network node side in the embodiment of the present application, an embodiment of the present application further provides a second network node, as shown in fig. 14, the second network node 1400 includes:

a third communication interface 1401 capable of performing information interaction with other network nodes;

the third processor 1402 is connected to the third communication interface 1401, so as to implement information interaction with other network nodes, and when running a computer program, the third processor 1402 executes a method provided by one or more technical solutions of the second network node side. And the computer program is stored on the third memory 1403.

Specifically, the third communication interface 1401 is configured to receive IPv6 information of the network node itself, where the IPv6 address information of the second network node is reported by other network nodes in the network based on the obtained IPv6 address information; the second network node is used for managing IPv6 information in the network; the IPv6 address information of the second network node is carried in the RA message;

the third processor 1402 is configured to store IPv6 information of the other network node.

In an embodiment, the third processor 1402 is further configured to:

Of course, in practice, the various components in the second network node 1400 are coupled together by a bus system 1404. It is understood that bus system 1404 is used to enable connective communication between these components. The bus system 1404 includes a power bus, a control bus, and a status signal bus in addition to a data bus. The various buses are labeled as bus system 1404 in fig. 14 for the sake of clarity of illustration.

The third memory 1403 in this embodiment of the application is used for storing various types of data to support the operation of the second network node 1400. Examples of such data include: any computer program for operating on the second network node 1400.

The method disclosed in the embodiments of the present application may be applied to the third processor 1402, or implemented by the third processor 1402. The third processor 1402 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the third processor 1402. The third processor 1402 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The third processor 1402 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the third memory 1403, and the third processor 1402 reads the information in the third memory 1403 and in combination with its hardware performs the steps of the foregoing method.

In an exemplary embodiment, the second network node 1400 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components for performing the aforementioned methods.

It is to be understood that the memories (the first memory 1203, the second memory 1303, and the third memory 1403) in the embodiments of the present application may be volatile memories or nonvolatile memories, and may also include both volatile and nonvolatile memories. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical disk, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The memories described in the embodiments of the present application are intended to comprise, without being limited to, these and any other suitable types of memory.

In an exemplary embodiment, the present application further provides a storage medium, specifically a computer storage medium, for example, a first memory 1203 storing a computer program, where the computer program is executable by the first processor 1202 of the first network node 1200 to complete the steps of the foregoing first network node side method. For another example, the second memory 1303 stores a computer program, which can be executed by the second processor 1302 of the third network node 1300 to perform the steps of the method at the third network node side. Further for example, the third memory 1403 is comprised to store a computer program which can be executed by the third processor 1402 of the second network node 1400 to perform the steps of the aforementioned second network node side method. The computer readable storage medium may be Memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface Memory, optical disk, or CD-ROM.

It should be noted that: "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The technical means described in the embodiments of the present application may be arbitrarily combined without conflict.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application.

Claims

1. An IPv6 information discovery method applied to a first network node, comprising:

sending a router advertisement RA message and reporting own IPv6 information to a second network node; wherein the content of the first and second substances,

2. The method of claim 1, further comprising:

3. The method of claim 2, wherein after receiving the RA packet and waiting for the first duration, reporting IPv6 information of the RA packet to the second network node based on IPv6 address information of the second network node.

4. The method according to any of claims 1 to 3, wherein the IPv6 address information of the second network node is carried in an optional option part of an RA packet.

5. The method of claim 4, wherein an option portion of an RA packet further carries a valid duration of IPv6 address information of the second network node.

6. An IPv6 information discovery method applied to a third network node, comprising:

7. The method of claim 6, wherein after receiving the RA packet and waiting for the second duration, reporting IPv6 information of the RA packet to the second network node based on the IPv6 address information of the second network node.

8. The method according to claim 6 or 7, wherein the IPv6 address information of the second network node is carried in an option part of an RA message.

9. The method of claim 8, wherein an option portion of an RA packet further carries a valid duration of IPv6 address information of the second network node.

10. An IPv6 information discovery method applied to a second network node, comprising:

and storing the IPv6 information of the other network nodes.

11. The method of claim 10, further comprising:

12. The method according to claim 10 or 11, wherein the IPv6 address information of the second network node is carried in an option portion of an RA packet.

13. The method of claim 12, wherein an option portion of an RA packet further carries a valid duration of IPv6 address information of the second network node.

14. An IPv6 information discovery apparatus, comprising:

a sending unit, configured to send an RA packet;

15. An IPv6 information discovery apparatus, comprising:

16. An IPv6 information discovery apparatus, comprising:

17. A first network node, comprising: a first processor and a first communication interface; wherein the content of the first and second substances,

18. A third network node, comprising: a second processor and a second communication interface; wherein the content of the first and second substances,

the second communication interface is configured to:

19. A second network node, comprising:

20. A first network node, comprising: a first processor and a first memory for storing a computer program capable of running on the processor,

wherein the first processor is adapted to perform the steps of the method of any one of claims 1 to 5 when running the computer program.

21. A third network node, comprising: a second processor and a second memory for storing a computer program capable of running on the processor,

wherein the second processor is adapted to perform the steps of the method of any of claims 6 to 9 when running the computer program.

22. A second network node, comprising: a third processor and a third memory for storing a computer program capable of running on the processor,

wherein the third processor is adapted to perform the steps of the method of any of claims 10 to 13 when running the computer program.

23. A storage medium having stored thereon a computer program for performing the steps of the method of any one of claims 1 to 5, or for performing the steps of the method of any one of claims 6 to 9, or for performing the steps of the method of any one of claims 10 to 13, when the computer program is executed by a processor.