WO2018010616A1

WO2018010616A1 - Link layer based network management

Info

Publication number: WO2018010616A1
Application number: PCT/CN2017/092350
Authority: WO
Inventors: 周科特; 孙海龙; 张飞; 顾锦枫; 陆亦雄
Original assignee: 紫光华山信息技术有限公司
Priority date: 2016-07-15
Filing date: 2017-07-10
Publication date: 2018-01-18
Also published as: CN107623752A; CN107623752B

Abstract

Provided are a link layer based network management method and apparatus. In the disclosure, a network device sends, to a peer device, a first network management IP address modification packet, wherein the first network management IP address modification packet carries a first IP address; and in a set monitoring period, when a network management IP address modification success response packet, returned to the network device by the peer device, for the first network management IP address modification packet is monitored, the network device determines that the peer device has modified the network management IP address from the second IP address to the first IP address.

Description

Link layer based network management

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201610565901.4, filed on Jun. Incorporated herein.

Background technique

Link Layer Discovery Protocol (LLDP) is a standard link layer protocol. The network device can organize the device information of the local device, such as the device identifier and the interface identifier, into a type/length/value (TLV: Type/Length/Value) and encapsulate the link layer discovery protocol data unit (LLDPDU: Link). The neighbors that are directly connected to themselves are published in the Layer Discovery Protocol Data Unit.

DRAWINGS

FIG. 1 is a schematic flowchart of a link layer based network management method according to an example of the present disclosure.

FIG. 2 is a schematic diagram of a link layer based network management method according to an example of the present disclosure.

FIG. 3 is a schematic diagram of a hardware structure of a network device according to an example of the present disclosure.

4 is a functional block diagram of network management control logic of the apparatus of FIG. 3, provided in accordance with an example of the present disclosure.

detailed description

The technical solutions in the embodiments of the present disclosure are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present disclosure. It is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without making creative labor are within the scope of the present disclosure.

The LLDPDU is a data unit encapsulated in the data portion of the LLDP message.

In the network, each network device can periodically send LLDP packets to neighboring devices. If the local configuration of the device changes, the network device can immediately send LLDP packets to the neighbor device. After receiving the LLDP packet, the neighbor device can check the validity of the LLDP packet. After the validity check is passed, the neighbor information can be updated based on the neighbor information carried in the LLDP packet.

In actual applications, when you need to modify the network management IP address of a network device, you can usually log in through the serial cable to modify the network management IP address of the network device. The method provided by the present disclosure does not need to modify the network management IP address of the network device by using a serial port login, but dynamically modify the network management IP address of the network device. The present invention will be described in detail below with reference to the drawings and specific embodiments.

Referring to FIG. 1, FIG. 1 is a schematic flowchart of a link layer-based network management method according to an example of the present disclosure. As shown in FIG. 1, the process may include step 101 and step 102.

Step 101: The network device may send a first network management IP address modification message to the peer device, where the first network management IP address modification message carries the first IP address.

For the convenience of description, the network management IP address modification message sent by the network device to the peer device is recorded as the first network management IP address modification message, and the network management IP address modification message received by the network device from the peer device is modified. Recorded as the second network management IP address modification message. Here, the network management IP address of the peer device is recorded as the second IP address. In this step 101, the network device can determine that the network management IP address of the peer device needs to be modified according to actual requirements, and the modified network management IP address is recorded as the first IP address. That is, when the network device determines that the network management IP address of the peer device needs to be changed from the second IP address to the first IP address, the network device may send a network management IP address modification packet to the peer device to the peer device. The sent network management IP address modification packet carries the first IP address.

After receiving the first network management IP address modification packet, the peer device may modify the IP address of the device to the first IP address specified by the received first network management IP address modification packet, and Returning a network management IP address modification success response message to the above network device.

Step 102: When the network device receives the IP address modification success response message returned by the peer device to the device in the first network management IP address modification packet, the network device determines that the peer device has The IP address is modified from the second IP address to the first IP address.

In the above description, the network management IP address modification message and the network management IP address modification success response message are all packets defined at the link layer for implementing the disclosure, and belong to the link layer message.

It can be seen from the flow shown in FIG. 1 that in the present disclosure, the network devices can dynamically modify the IP addresses of each other through the link layer messages.

In a disclosed embodiment, before the process shown in FIG. 1, the network device may further dynamically obtain an IP address of the peer device, and the acquired network management IP address is the second IP address. In another disclosed embodiment, the network device may also pre-configure the IP address of the peer device, that is, the second IP address, and the network device may acquire the IP address of the peer device, that is, the second IP address, based on the configuration. . The following takes the IP address of the peer device dynamically as an example.

As an embodiment, the network device dynamically acquiring the network management IP address of the peer device may include: the network device may broadcast an IP address request packet in the network, where the IP address request packet may carry the network management IP address of the device; When receiving the IP address response packet returned by the peer device for the IP address request packet, the device can obtain the network management IP address of the peer device carried in the IP address response packet.

In another embodiment, the network device may further receive an IP address request message, and may return an IP address response message to the source device of the received IP address request message, where the IP address response message carries the device. IP address.

In a disclosed embodiment, the network device may further receive the second network management IP address modification message, and modify the IP address of the device to the IP address specified by the second network management IP address modification message, and The source device of the network management IP address modification packet returns a network management IP address modification success response packet.

As an embodiment, modifying the IP address of the device to the received IP address specified by the second network management IP address modification message may include: determining whether the specified IP address meets the IP address modification condition of the device, and if , modify the IP address of the device to the specified IP address.

Here, the IP address modification condition of the device may include: the same network segment as the IP address of the device, or the device configuration allows the IP address to be modified. The invention is not specifically limited.

As an embodiment, in the present invention, before modifying the IP address of the device to the IP address specified by the received second network management IP address modification packet, the network device may further: determine whether the state of the device is an IP address. Modify the status. If no, set the status of the device to the IP address modification status. If yes, return the IP address from the source device that modified the IP address modification packet to the second network.

In addition, after modifying the IP address of the device to the specified IP address, the network device may further set the state of the device to the setting of the non-IP address modification state. Here, as an embodiment, setting the state of the device to the IP address modification state may be exemplified by setting the state of the device to a first set value such as 1. Correspondingly, the setting of setting the state of the device to the non-IP address modification state may be exemplified by setting the state of the device to a second set value such as 0.

Further, in a disclosed embodiment, if the network management IP address returned by the peer device for receiving the first network management IP address modification message sent by the device is being modified within the set listening period, The network device may also wait for a preset time from receiving the network management IP address that is modifying the message, and again to the pair when the preset time arrives. The end device sends a network management IP address modification packet.

The preset time may include one or more preset monitoring periods, or may be a time preset by the network administrator according to actual conditions, where the preset time is not specifically limited.

The method provided by the present invention is described below by way of example based on the above description.

Referring to FIG. 2, FIG. 2 is a schematic diagram of a link layer-based network management method according to an example of the present disclosure.

In the embodiment shown in FIG. 2, the above-mentioned link layer-based network management method is described in detail by taking the device 1, the device 2, and the device 3 in the network as an example.

In FIG. 2, it is assumed that the device 1 can dynamically obtain the IP addresses of the peer devices, such as the device 2 and the device 3.

For example, device 1 can broadcast an IP address request message within the network.

After the device 1 broadcasts the IP address request message in the network, both the device 2 and the device 3 in the network can receive the IP address request message.

After receiving the IP address request packet broadcasted by the device 1, the device 2 can parse the received IP address request packet, obtain the MAC address of the device 1 carried by the device 1, such as MAC1, and return an IP address to the device 1. Response message.

After receiving the IP address request packet broadcasted by the device 1, the device 3 can parse the received IP address request packet, obtain the MAC address carried by the device, such as MAC1, and return an IP address response to the device 1. Message.

The IP address device 1 can listen to the IP address response message within the set request period after the broadcast IP address request message, and the set request period can be pre-configured.

When the device 1 listens to the IP address response message from the device 2 in the set request period, the device 1 can parse the IP address response message and obtain the IP address of the device 2 carried in the IP address response message. Similarly, when the device 1 listens to the IP address response message from the device 3 in the set request period, the device can parse the IP address response message and obtain the IP address of the device 3 carried in the IP address response message.

It should be noted that, when the device 1 listens to the IP address response message from the device 2 or the device 3 after the end of the setting request period, the device 1 may discard the monitored IP address response message. It should be noted that, since the sending of the IP address request message and the sending of the IP address response message are asynchronous communication, the device 1 may listen to the same device within the set request period, for example, multiple IP addresses returned by the device 2 Response message. In this case, the device 1 can filter the IP address response packets, and details are not described here.

After the device 1 obtains the IP address of the device 2 and the IP address of the device 3, it is assumed that the device 1 finds that the device type and device serial number of the device 2 and the device 3 are different, but the IP addresses are the same, and all are IP2. In response to this situation, device 1 can determine the repair Change the IP address of device 3. It should be noted that other situations, such as adjusting the IP address of the device 3 based on the service plan adjustment of the device 3, or modifying the IP address of the device 3 based on the user configuration, may be applicable to the technical solution of the present disclosure. This embodiment does not specifically limit the scenario in which the IP address of the device 3 is triggered to be modified.

Suppose the modified IP address of device 3 is IP3. The IP3 is different from the IP address of the device 1 such as IP1 and the IP address of any other device acquired by the device 1. As an embodiment, the network segment to which the IP3 belongs is the same as the IP address of the device 1, such as the network segment to which the IP1 belongs.

The device 1 can send a network management IP address modification message to the device 3.

The device 3 can receive the network management IP address modification packet sent by the device 1, and can determine whether the state of the device is an IP address modification state.

After the device 3 determines that the state of the device is not the IP address modification state, the device 3 can set the state of the device 3 to the IP address modification state. The device 3 can determine whether the IP address IP3 carried in the network management IP address modification packet meets the IP address modification condition of the device 3. The IP address modification condition is as follows: The IP address of the network management IP address modification packet is the same as the current IP address of the device 3, that is, the network segment to which the IP2 belongs. The device 3 can change the IP address of the device 3 to IP3 and set the state of the device to non- After the IP address is modified, the IP address modification success response packet can be returned to device 1.

As an embodiment, when determining that the IP address IP3 carried in the network management IP address modification packet does not meet the IP address modification condition of the device 3, the device 3 may delete the setting of the state of the device as the IP address modification state, for example, The status of the device is updated from the IP address modification status to the non-IP address modification status, and then the network management IP address modification failure response message is returned to the device 1.

When the device 3 determines that the state of the device is the IP address modification state, the device 3 may return the network management IP address to the device 1 to modify the message.

The device 1 can listen to the message returned by the device 3 during the set listening period. When the device 1 monitors the network management IP address modification success response message sent by the device 3 during the set listening period, it can be determined that the device 3 has successfully modified the IP address from IP2 to IP3.

When the device 1 does not detect any packet that the device 3 returns to the device for the network management IP address modification packet in the set listening period, the device 1 may perform the network management IP address modification packet to the peer device again. step. When the device 1 receives the packet whose network management IP address returned by the device 3 to the device for the network management IP address modification message is being modified within the set listening period, the device 1 may wait for a period of time and wait for the time to arrive. Perform the peer device again Steps to send a network management IP address to modify the packet. When the device 1 listens to the network management IP address modification failure response message sent by the device 3 in the set listening period, it re-determines a new IP address for the device 3, which is recorded as IP4, and returns to the device according to the above operation. 3 Send a new network management IP address modification packet, which will not be described here.

As can be seen from the foregoing embodiments, in the present disclosure, network devices can collect mutual MAC addresses, IP addresses, and the like through packet interaction, and dynamically modify each other's IP addresses through packet interaction. This achieves the purpose of modifying the IP address of the network device to facilitate management of all network devices in the network.

Referring to FIG. 3, FIG. 3 is a schematic diagram of a hardware structure of a network device according to an example of the present disclosure. The network device can include a processor 301, a machine readable storage medium 302 that stores machine readable instructions. Processor 401 and machine readable storage medium 302 can communicate via system bus 303. And, by reading and executing machine executable instructions in the machine readable storage medium 302 corresponding to the network management control logic, the processor 301 can perform the link layer based network management method described above.

The machine-readable storage medium 302 referred to herein may be any electronic, magnetic, optical, or other physical storage device, and may contain stored information such as executable instructions, data, and the like. For example, the machine-readable storage medium may be: RAM (Radom Access Memory), volatile memory, non-volatile memory, flash memory, storage drive (such as a hard disk drive), solid state drive, any type of storage disk. (such as a disc, DVD, etc.), or a similar storage medium, or a combination thereof.

Referring to FIG. 4, FIG. 4 is a functional block diagram of network management control logic of the apparatus shown in FIG. 3 according to an example of the present disclosure. The network management control logic 40 may include a sending module 401 and a listening module 402.

The sending module 401 is configured to send, to the peer device, a first network management IP address modification packet, where the first network management IP address modification packet carries the first IP address;

The monitoring module 402 is configured to: when the peer device detects the IP address modification success response packet returned by the peer device to the network device in the set listening period, The peer device has modified the IP address from the second IP address to the first IP address.

According to an example, the network management control logic further includes: a first receiving module 403 and a modification module 404.

The first receiving module 403 is configured to receive a second network management IP address modification message.

The modifying module 404 is configured to modify an IP address of the network device to an IP address specified by the second network management IP address modification packet, and modify a source device of the packet to the second network management IP address. Returns the network management IP address modification success response packet.

According to an example, the network management control logic further includes: an obtaining module 405, configured to acquire the peer end The IP address of the device is recorded as the second IP address.

According to an example, the obtaining module 405 may be specifically configured to broadcast an IP address request message in the network, where the IP address request message carries an IP address of the network device, and receives the And obtaining, by the peer device, the IP address of the peer device carried in the IP address response packet, according to the IP address response packet, in response to the IP address response packet returned by the IP address request packet.

According to an example, the network management control logic further includes: a second receiving module 406, configured to receive an IP address request message; the sending module 401 may further return an IP address response report to the source device of the IP address request message. The IP address response packet carries an IP address of the network device.

According to an example, the modifying module 404 may be specifically configured to determine whether the IP address specified by the second network management IP address modification packet meets an IP address modification condition, where the IP address modification condition includes: the second network management The IP address specified by the IP address modification packet belongs to the same network segment as the current IP address of the network device; if yes, the IP address of the network device is modified to the IP address specified by the second network management IP address modification packet. address.

According to an example, the modifying module 404 may be further configured to determine whether the state of the network device is before modifying an IP address of the network device to an IP address specified by the second network management IP address modification message. Modifying the status of the IP address; if not, setting the status of the network device to the IP address modification status; if yes, returning the IP address to the source device of the second network management IP address modification packet to modify the message; After the IP address of the network device is modified to the IP address specified by the second network management IP address modification message, the state of the network device is set to a setting of a non-IP address modification state.

According to an example, the monitoring module 402 is further configured to receive, during the set listening period, a network management IP address that the peer device returns to the network device for the first network management IP address modification message. When the packet is being modified, it waits for a preset time, and when the preset time arrives, sends a network management IP address modification packet to the peer device again. The preset time may include one or more preset listening periods.

According to an example of the present disclosure, there is also provided a machine readable storage medium comprising machine executable instructions, such as machine readable storage medium 302 of FIG. 3, executable by processor 301 in a network device To implement the link layer based network management method described above.

The machine-executable instructions in the machine-readable storage medium 302 corresponding to the network management control logic may cause the processor 301 to: send a first network management IP address modification message to the peer device, The first network management IP address modification packet carries the first IP address, and the peer device is configured to modify the packet for the first network management IP address to the network device during the set listening period. Returned IP address modification success response message And determining that the peer device has modified the IP address from the second IP address to the first IP address.

According to an example, the machine executable instructions may further cause the processor to: receive a second network management IP address modification message; modify the IP address of the network device to the second network management IP address modification message The specified IP address is returned to the source device of the second network management IP address modification packet to return a network management IP address modification success response message.

According to an example, the machine executable instructions further cause the processor to: acquire an IP address of the peer device and record as the second IP address.

According to an example, when acquiring an IP address of the peer device and recording as the second IP address, the machine executable instructions cause the processor to: broadcast an IP address request message within the network, the IP The address request message carries the IP address of the network device, and receives the IP address response message returned by the peer device for the IP address request message in the set request period, and obtains the response according to the IP address response message. The IP address of the peer device carried in the IP address response packet.

According to an example, the machine executable instructions further cause the processor to: receive an IP address request message; return an IP address response message to the source device of the IP address request message, wherein the IP address response message Carrying the IP address of the network device.

According to an example, the IP address specified by the network device is modified to an IP address specified by the second network management IP address modification message, the machine executable instruction causing the processor to: determine the second network management Whether the IP address specified by the IP address modification packet satisfies the IP address modification condition, and the IP address modification condition includes: the IP address specified by the second network management IP address modification packet is the same as the current IP address of the network device. a network segment; if yes, modifying an IP address of the network device to an IP address specified by the second network management IP address modification message.

According to an example, the machine executable instructions further cause the processor to: determine the network device before modifying an IP address of the network device to an IP address specified by the second network management IP address modification message Whether the status is the IP address modification status, if not, setting the status of the network device to the IP address modification status; if yes, returning the IP address to the source device of the second network management IP address modification message, modifying the message After modifying the IP address of the network device to the IP address specified by the second network management IP address modification message, setting the state of the network device to a non-IP address modification state.

According to an example, the machine executable instructions further cause the processor to: receive the network returned by the peer device the first network management IP address modification message to the network device within a set listening period When the management IP address is modifying the packet, it waits for the preset time, and when the preset time arrives, sends the network to the peer device again. Manage IP address modification packets. The preset time may be more than one preset listening period.

For the device embodiment, since it basically corresponds to the method embodiment, reference may be made to the partial description of the method embodiment. The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie may be located A place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.

It should be noted that, in this context, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply such entities or operations. There is any such actual relationship or order between them. The terms "including", "comprising" or "comprising" or "comprising" are intended to include a non-exclusive inclusion, such that a process, method, article, or device that comprises a plurality of elements includes not only those elements but also other items not specifically listed Elements, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The method and apparatus provided by the embodiments of the present invention are described in detail above. The principles and implementations of the present invention are described in the specific examples. The description of the above embodiments is only used to help understand the method of the present invention and At the same time, there will be changes in the specific embodiments and the scope of application according to the idea of the present invention, and the contents of the present specification should not be construed as limiting the present invention. .

Claims

A link layer based network management method, comprising:

The network device sends a first network management IP address modification message to the peer device, where the first network management IP address modification message carries the first IP address;

The network device determines, when the peer device detects the network management IP address modification success response message returned by the peer device to the network device for the first network management IP address modification message in the set listening period. The peer device has modified the IP address from the second IP address to the first IP address.
The method of claim 1 further comprising:

Receiving, by the network device, a second network management IP address modification message;

The network device modifies the IP address of the network device to an IP address specified by the second IP network management address modification message;

The network device returns a network management IP address modification success response message to the source device of the second network management IP address modification message.
The method of claim 1 further comprising:

The network device acquires an IP address of the peer device and records the second IP address.
The method of claim 3, wherein obtaining the IP address of the peer device comprises:

The network device broadcasts an IP address request message in the network, where the IP address request message carries an IP address of the network device;

The network device obtains an IP address of the peer device according to the IP address response packet, when the IP address response message returned by the peer device for the IP address request message is received.
The method of claim 1 further comprising:

Receiving, by the network device, an IP address request message;

The network device returns an IP address response message to the source device of the IP address request packet, where the IP address response message carries an IP address of the network device.
The method according to claim 2, wherein modifying the IP address of the network device to the IP address specified by the second network management IP address modification message comprises:

The network device determines whether the IP address specified by the second network management IP address modification packet meets the IP address modification condition, and the IP address modification condition includes: the IP address specified by the second network management IP address modification packet And belong to the same network segment as the current IP address of the network device;

If yes, the network device modifies the IP address of the network device to the second network management IP address modification. The IP address specified by the message.
The method of claim 2 further comprising:

Before the IP address of the network device is modified to the IP address specified by the second network management IP address modification packet, the network device determines whether the state of the network device is an IP address modification state.

If not, the network device sets the state of the network device to an IP address modification state;

If yes, the network device returns an IP address to the source device of the second network management IP address modification packet, and the packet is being modified;

After modifying the IP address of the network device to the IP address specified by the second IP address modification message, the network device sets the state of the network device to a non-IP address modification state.
The method of claim 7 further comprising:

The network device waits for a preset time when receiving an IP address that the peer device returns to the network device for the first network management IP address modification message is being modified in the set listening period, and

When the preset time arrives, the network device sends a network management IP address modification message to the peer device again.
A network device comprising a processor and a machine readable storage medium storing machine executable instructions executable by the processor, the processor being caused by the machine executable instructions:

Sending a first network management IP address modification message to the peer device, where the first network management IP address modification message carries the first IP address;

Determining, when the peer device detects the network management IP address modification success response message returned by the peer device to the network device in the set listening period, determining the peer device The network management IP address has been modified from the second IP address to the first IP address.
The network device of claim 9 wherein said machine executable instructions further cause said processor to:

Receiving a second network management IP address modification message;

Modifying the IP address of the network device to the IP address specified by the second network management IP address modification packet, and returning the network management IP address to the source device of the second network management IP address modification packet to successfully respond to the modification Message.
The network device of claim 9 wherein said machine executable instructions further cause said processor to:

Obtaining an IP address of the peer device and recording the second IP address.
The network device of claim 9 wherein said machine executable instructions further cause said processor to:

Receiving an IP address request message;

And returning, by the source device of the IP address request packet, an IP address response packet, where the IP address response packet carries an IP address of the network device.
The network device according to claim 10, wherein said machine executable instructions cause said processor to modify an IP address of said network device to an IP address specified by said second network management IP address modification message :

Determining whether the IP address specified by the second network management IP address modification packet meets the IP address modification condition, where the IP address modification condition includes: the IP address specified by the second network management IP address modification packet and the network The current IP address of the device belongs to the same network segment.

If yes, modify the IP address of the network device to the IP address specified by the second network management IP address modification message.
The network device of claim 10, the machine executable instructions further causing the processor to:

Before modifying the network management IP address of the network device to the IP address specified by the second network management IP address modification packet, determining whether the state of the network device is an IP address modification state,

If not, setting the state of the network device to an IP address modification state;

If yes, returning the network management IP address to the source device of the second network management IP address modification packet to modify the packet;

After modifying the IP address of the network device to the IP address specified by the second network management IP address modification message, the state of the network device is modified to a setting of a non-IP address modification state.
A machine readable storage medium storing machine executable instructions that, when invoked and executed by a processor, cause the processor to:

Sending a first network management IP address modification message to the peer device, where the first network management IP address modification message carries the first IP address;

Determining, when the peer device detects the network management IP address modification success response message returned by the peer device to the network device in the set listening period, determining the peer device The network management IP address has been modified from the second IP address to the first IP address.