CN111817886B - Method and equipment for acquiring management object data - Google Patents
Method and equipment for acquiring management object data Download PDFInfo
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- CN111817886B CN111817886B CN202010602875.4A CN202010602875A CN111817886B CN 111817886 B CN111817886 B CN 111817886B CN 202010602875 A CN202010602875 A CN 202010602875A CN 111817886 B CN111817886 B CN 111817886B
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000004044 response Effects 0.000 claims abstract description 82
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 230000003993 interaction Effects 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000010586 diagram Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/02—Standardisation; Integration
- H04L41/0213—Standardised network management protocols, e.g. simple network management protocol [SNMP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1848—Time-out mechanisms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/188—Time-out mechanisms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/04—Network management architectures or arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Computer And Data Communications (AREA)
Abstract
The present specification provides a method and apparatus for acquiring management object data, where the method includes: based on a simple network management protocol, carrying out message interaction, sending a request message to an Agent of a managed device by a management device, and setting a data retransmission timer for the managed device; the management device needs to acquire a management object of the managed device, and the request message carries the OID of the management object and the maximum message length which can be received by the network management system; traversing each variable of the management equipment to obtain variable data so that an Agent management process of the managed equipment determines the number of variable data carried in a management object response message according to the maximum message length; receiving a management object response message of an Agent of the managed device; acquiring a plurality of variables carried by a management object response message and variable data of the variables; judging whether the management object response message carries a data transmission ending mark or not; if not, resetting the data retransmission timer; if yes, deleting the data retransmission timer.
Description
Technical Field
The present application relates to communication technology, and in particular, to a method and apparatus for acquiring management object data.
Background
The NMS (Network Management System ) uses SNMP (Simple Network Management Protocol, simple network management protocol) to manage and monitor network devices. The NMS may be either a dedicated network management server or an application SNMP for a network device.
The Agent (proxy process) of the managed network device is an application module for maintaining information data of the managed device and reporting data of a management object of the managed device to the NMS sending the request management process in response to a request of the NMS.
MIB (Management Information Base ) of an Agent of a managed network device stores management objects through a tree structure. In the MIB, each management object can be uniquely identified by a string of digital OIDs (Object Identifier, object identifiers).
However, in the prior art, an Agent of a managed device sends a response message carrying a variable of a management object and variable data thereof to an NMS according to the number of variables notified by the NMS, and when the number of variables of the management object carried by the response message is smaller than the number of variables notified by the response message, the Agent carries the number of the variable of another management object and the number of the variable thereof in the response message, so that the NMS device identifies all the variables of the acquired management object according to the other management objects of the received response message.
The problem in the prior art is that the NMS and the managed device acquire the variables and the variable data of the management objects according to the fixed variable number, so that the interactive messages are increased, the variables and the data of other management objects are required to be interacted, and bandwidth resources are occupied.
Disclosure of Invention
The purpose of the application is to provide a method and equipment for acquiring management object data, which reduces the number of message interactions required for acquiring the variables and the variable data of the management object of managed equipment and reduces the bandwidth resource occupation.
In order to achieve the above method, the present application provides a method for obtaining management object data, which is applied to a network management system, wherein the method includes: sending a management object request message to an Agent of a managed device and setting a data retransmission timer; traversing each variable of the management equipment to obtain variable data, wherein the management object request message carries an object identifier and a maximum message length; the management process of the Agent of the managed device determines the number of variable data carried in the management object response message according to the maximum message length; receiving a management object response message of an Agent of the managed device; acquiring a plurality of variables carried by a management object response message and variable data of the variables; judging whether the management object response message carries a data transmission ending mark or not; if not, resetting the data retransmission timer; if yes, deleting the data retransmission timer.
In order to achieve the above-mentioned method, the present application provides an apparatus for acquiring management object data, the apparatus including a processor and a memory as a network management system; the memory is used for storing processor executable instructions; wherein the processor is configured to execute the following operations by executing processor-executable instructions in the memory: based on a simple network management protocol, carrying out message interaction, sending a request message to an Agent of a managed device by a management device and setting a data retransmission timer; the management device needs to acquire a management object of the managed device, traverses each variable of the management device to acquire variable data, and carries an OID of the management object and the maximum message length which can be received by the network management system in a request message; the management process of the Agent of the managed device determines the number of variable data carried in the management object response message according to the maximum message length; receiving a management object response message of an Agent of the managed device; acquiring a plurality of variables carried by a management object response message and variable data of the variables; judging whether the management object response message carries a data transmission ending mark or not; if not, resetting the data retransmission timer; if yes, deleting the data retransmission timer.
In order to achieve the above method, the present application provides an apparatus for acquiring management object data, where the apparatus includes, as a managed apparatus, a processor and a memory; the memory is used for storing processor executable instructions; wherein the processor is configured to execute the following operations by executing processor-executable instructions in the memory: receiving a management object request message; wherein, the management object request message carries an object identifier and a maximum message length; traversing all variables corresponding to the object identifier; storing all the variables traversed and variable data thereof; packaging all the stored variables and variable data thereof in a plurality of management object response messages with the length not greater than the maximum message length, and setting a data transmission ending mark in the last management object response message; and sending a plurality of management object response messages.
The NMS device informs the management process of the managed device of the maximum message length, so that the managed device can more flexibly determine the number of variable data carried in the response message according to the variable and the data of the managed object, interaction is not needed according to the fixed variable number, the message interaction number required for acquiring the variable and the variable data of the managed object of the managed device is reduced, and bandwidth resource occupation is reduced.
Drawings
FIG. 1 is a flowchart of an embodiment of a network management system according to the present application obtaining management object data;
FIG. 2 is a diagram of a first embodiment of a network management system interacting with managed systems to manage object data;
FIG. 3 is a diagram of a second embodiment of a network management system interacting with managed systems to manage object data;
FIG. 4 is a diagram of a third embodiment of a network management system interacting with managed systems to manage object data;
FIG. 5 is a schematic diagram of an embodiment of a network management system;
fig. 6 is a schematic diagram of an embodiment of a managed device.
Description of the embodiments
A plurality of examples shown in the drawings will be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the examples.
The term "comprising" as used in the terminology includes, but is not limited to; the term "comprising" means including but not limited to; the terms "above," "within," and "below" encompass the present number; the terms "greater than", "less than" mean that the number is not inclusive. The term "based on" means based at least in part on a portion thereof.
FIG. 1 is a flowchart of an embodiment of a network management system according to the present application obtaining management object data; the method comprises the following steps:
step 101, sending a management object request message and setting a data retransmission timer; wherein, the management object request message carries an object identifier and a maximum message length.
102, receiving a management object response message;
step 103, obtaining a plurality of variables carried by the management object response message and variable data thereof;
104, judging whether the management object response message carries a data transmission ending mark; if yes, go to step 105; if not, go to step 106
Step 105, deleting the data retransmission timer;
step 106, resetting the data retransmission timer.
The method shown in fig. 1 has the beneficial effects that the NMS device informs the management process of the managed device of the maximum message length, so that the managed device can more flexibly determine the number of variable data carried in the response message according to the variable and the data of the managed object, and does not need to interact according to the fixed variable number, thereby reducing the message interaction number required for acquiring the variable and the variable data of the managed object of the managed device and reducing the bandwidth resource occupation.
Fig. 2 is a schematic diagram of a first embodiment of interaction management object data between a network management system and a managed system.
The network management system NMS needs to acquire the management object ifhcinoctes of the managed device. At time T1, the NMS sends a management object request message 211 to the managed device, where OID1.3.6.1.2.1.31.1.1.1.6 of the management object ifhcinoctes and the maximum message length of the message that the NMS can receive are carried, and the NMS sets a data retransmission timer for the management object ifhcinoctes.
At time T2, the Agent of the managed device receives the management object request message 211, determines the management object as the ifhcinoctes of the MIB according to OID1.3.6.1.2.1.31.1.1.1.6, traverses each variable of the ifhcinoctes, obtains variable data of each variable, and stores all traversed variables and variable data thereof in the memory. The Agent sequentially encapsulates all variables and variable data of the ifHCInOctes in the management object response message according to the maximum message length, and when the management object response message 212 reaches the maximum message length, the management object response message is sent to the NMS at the time T3.
At time T4, when the NMS receives the management object response message 212, the NMS acquires the variable and variable data of the ifHCInOctets carried in the management object response message. The NMS determines that the management object response message 212 does not carry a data transmission end flag, resets the data retransmission timer of the management object ifHCInOctets.
The Agent sequentially encapsulates the residual variable and variable data of the ifHCInOctes in the management object response message 213 according to the maximum message length, and when the management object response message 213 reaches the maximum message length, the management object response message 213 is sent to the NMS at the time T5.
At time T6, when the NMS receives the management object response message 213, the NMS acquires the variable and variable data of the ifHCInOctets carried in the management object response message. The NMS determines that the management object response message 213 does not carry a data transmission end flag, resets the data retransmission timer of the management object ifHCInOctets.
The Agent sequentially encapsulates the residual variable and variable data of the ifHCInOctes in the management object response message 214 according to the maximum message length, determines that the residual variable and variable data of the ifHCInOctes have all completed transmission, sets a data transmission end identifier in the management object response message 214, and sends the data transmission end identifier to the NMS at the time T7.
At time T8, when the NMS receives the management object response message 214, the NMS acquires the variable and variable data of the ifHCInOctets carried in the management object response message. The NMS determines that the management object response packet 214 carries a data transmission end identifier, determines that variable data of all variables of the ifhcinoctes have been transmitted, and deletes the data retransmission timer of the management object ifhcinoctes.
In the embodiment shown in fig. 2, the managed device can more flexibly determine the number of variable data carried in the response message according to the variable and the data of the managed object, without performing interaction according to the fixed variable number, so that the number of message interactions required for acquiring the variable and the variable data of the managed object of the managed device is reduced, and bandwidth resource occupation is reduced.
FIG. 3 is a diagram of a second embodiment of the interaction between a network management system and a managed system to manage object data.
The network management system NMS needs to acquire the management object ifhcinoctes of the managed device. At time T11, the NMS sends a management object request message 311 to the managed device, where OID1.3.6.1.2.1.31.1.1.1.6 of the management object ifhcinoctes and the maximum message length of the message that the NMS can receive are carried, and the NMS sets a data retransmission timer for the management object ifhcinoctes. At time T12, the Agent of the managed device receives the management object request message 311.
The managed device fails or a network between the managed device and the NMS device has no management object response message from the managed device. At time T13, the data retransmission timer set for the management object ifhcinoctes on the NMS device times out, and the management object request message 311 is sent to the managed device again, where OID1.3.6.1.2.1.31.1.1.1.6 of the management object ifhcinoctes and the maximum message length of the message that the NMS can receive are carried.
At T14, the Agent of the managed device receives the management object request message 311 again, determines that the management object is ifhcinoctes of the MIB according to OID1.3.6.1.2.1.31.1.1.1.6, traverses each variable of the ifhcinoctes, obtains variable data of each variable, and stores all traversed variables and variable data thereof in the memory. The Agent sequentially encapsulates all variables and variable data of the ifHCInOctes in the management object response message 312 according to the maximum message length, and when the management object response message 312 reaches the maximum message length, the management object response message 312 is sent to the NMS at the time T15.
At time T16, when the NMS receives the management object response message 312, the variable and variable data of ifhcinoctes carried in the management object response message are obtained. The NMS determines that the management object response message 312 does not carry a data transmission end flag, resets the data retransmission timer of the management object ifHCInOctets.
The Agent sequentially encapsulates the residual variable and variable data of the ifHCInOctes in the management object response message 313 according to the maximum message length, and when the management object response message 313 reaches the maximum message length, the management object response message 313 is sent to the NMS at the time T17.
At time T18, when the NMS receives the management object response message 313, the NMS acquires the variable and variable data of the ifHCInOctets carried in the management object response message. The NMS determines that the management object response message 313 does not carry a data transmission end identifier, resets the data retransmission timer of the management object ifHCInOctets.
The Agent sequentially encapsulates the residual variable and variable data of the ifHCInOctes in the management object response message 314 according to the maximum message length, determines that the residual variable and variable data of the ifHCInOctes have all completed transmission, sets a data transmission end identifier in the management object response message 314, and sends the data transmission end identifier to the NMS at the time T19.
At time T20, when the NMS receives the management object response message 314, the NMS acquires the variable and variable data of the ifHCInOctets carried in the management object response message. The NMS determines that the management object response message 314 carries a data transmission end identifier, determines that variable data of all variables of the ifhcinoctes have been transmitted, and deletes the data retransmission timer of the management object ifhcinoctes.
Fig. 4 is a schematic diagram of a third embodiment of interaction management object data between a network management system and a managed system.
The network management system NMS needs to acquire the management object ifhcinoctes of the managed device. At time T21, the NMS sends a management object request message 411 to the managed device, where OID1.3.6.1.2.1.31.1.1.1.6 carrying the management object ifhcinoctes and the maximum message length of the message that the NMS can receive, and the NMS sets a data retransmission timer for the management object ifhcinoctes.
At time T22, the Agent of the managed device receives the management object request message 411, determines that the management object is ifhcinoctes of the MIB according to OID1.3.6.1.2.1.31.1.1.1.6, traverses each variable of the ifhcinoctes, obtains variable data of each variable, and stores all traversed variables and variable data thereof in the memory. The Agent sequentially encapsulates all variables and variable data of the ifHCInOctes in the management object response message according to the maximum message length, and when the management object response message 412 reaches the maximum message length, the management object response message is sent to the NMS at the time T23.
At time T24, when the NMS receives the management object response message 412, the NMS acquires the variable and variable data of ifHCInOctets carried in the management object response message. The NMS determines that the management object response message 412 does not carry a data transmission end flag, resets the data retransmission timer of the management object ifHCInOctets.
At time T25, the data retransmission timer of ifhcinoctes on the NMS device times out, the NMS device carries the last variable 1.3.6.1.2.1.31.1.1.1.6.204 in the management object retransmission request message, sends the management object retransmission request message to the managed device, and resets the data retransmission timer of the management object ifhcinoctes according to the last variable of the received ifhcinoctes and variable data 1.3.6.1.2.1.31.1.1.1.6.204 =counter 64:0 thereof.
At time T26, the Agent receives the management object retransmission request message 413, determines that the management object to be acquired is ifHCInOctets according to the received OID1.3.6.1.2.1.31.1.1.1.6, and determines that the last variable data received by the NMS device belongs to the variable 1.3.6.1.2.1.31.1.1.1.6.204 according to 1.3.6.1.2.1.31.1.1.1.6.204.
The Agent sequentially encapsulates the residual variable and variable data of the ifhcinoctes in the management object response message 414 according to the maximum message length, determines that the residual variable and variable data of the ifhcinoctes have all completed transmission, sets a data transmission end identifier in the management object response message 414, and sends the data transmission end identifier to the NMS at a time T27.
At time T28, when the NMS receives the management object response message 414, the NMS acquires the variable and variable data of ifHCInOctets carried in the management object response message. The NMS determines that the management object response message 414 carries a data transmission end identifier, determines that variable data of all variables of the ifhcinoctes has been transmitted, and deletes the data retransmission timer of the management object ifhcinoctes.
Fig. 5 is a schematic diagram of an NMS embodiment of the network management system provided in the present application; the NMS50 includes a processor, a memory, and a switching chip. The memory, the processor and the exchange chip are connected through a bus. The memory is used to store programs and the processor invokes the programs stored in the memory to perform the method embodiments described above with respect to fig. 2-4. The specific implementation manner and the technical effect are similar, and are not repeated here.
FIG. 6 is a schematic diagram of an embodiment of a managed device provided herein; the managed device 60 includes a processor, memory, and a switch chip. The memory, the processor and the exchange chip are connected through a bus. The memory is used to store programs and the processor invokes the programs stored in the memory to perform the method embodiments described above with respect to fig. 2-4. The specific implementation manner and the technical effect are similar, and are not repeated here.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the invention to the precise form disclosed, and any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. A method for acquiring management object data, applied to a network management system, the method comprising: based on a simple network management protocol, carrying out message interaction, sending a request message to an Agent of a managed device by a management device, and setting a data retransmission timer for the managed device; the management device needs to acquire a management object of the managed device, and the request message carries the OID of the management object and the maximum message length which can be received by the network management system; traversing each variable of the management equipment to obtain variable data so that an Agent management process of the managed equipment determines the number of variable data carried in a management object response message according to the maximum message length;
receiving a management object response message of an Agent of the managed device;
acquiring a plurality of variables carried by the management object response message and variable data of the variables;
judging whether the management object response message carries a data transmission ending mark or not;
if not, resetting the data retransmission timer;
if yes, deleting the data retransmission timer.
2. The method of claim 1, wherein prior to receiving the management object response message, the method further comprises:
determining that the data retransmission timer times out;
judging whether the data of the variable corresponding to the object identifier is received or not;
if not, resetting the data retransmission timer and retransmitting the management object request message;
if yes, sending a retransmission request message of the management object; the management object retransmission request message carries the object identifier, a retransmission identifier and the last variable carrying all the acquired variables.
3. An apparatus for acquiring management object data, the apparatus comprising a processor and a memory as a network management system; wherein the memory is configured to store processor-executable instructions; wherein the processor is configured to, by executing processor-executable instructions in the memory, perform the following:
based on a simple network management protocol, carrying out message interaction, sending a request message to an Agent of a managed device by a management device and setting a data retransmission timer; the management device needs to acquire a management object of the managed device, and the request message carries the OID of the management object and the maximum message length which can be received by the network management system; traversing each variable of the management equipment to obtain variable data so that an Agent management process of the managed equipment determines the number of variable data carried in a management object response message according to the maximum message length;
receiving a management object response message of an Agent of the managed device;
acquiring a plurality of variables carried by the management object response message and variable data of the variables;
judging whether the management object response message carries a data transmission ending mark or not;
if not, resetting the data retransmission timer;
if yes, deleting the data retransmission timer.
4. The apparatus of claim 3, wherein the processor further performs the following by executing processor-executable instructions in the memory:
determining that the data retransmission timer times out;
judging whether the data of the variable corresponding to the object identifier is received or not;
if not, resetting the data retransmission timer and retransmitting the management object request message;
if yes, sending a retransmission request message of the management object; the management object retransmission request message carries the object identifier, a retransmission identifier and the last variable carrying all the acquired variables.
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