TWI568232B - Get the correct way to connect the network device with the common protocol SNMP - Google Patents

Description

Method for obtaining a correct connection position of a network device by using a general protocol SNMP

The invention relates to a method for obtaining a correct connection location of a network device by using a general protocol SNMP, in particular, obtaining a switch connection corresponding to a network device by using a general protocol SNMP, and automatically determining a switch connection to filter an invalid correspondence, and Get the method of correctly connecting the terminal device.

With the rapid development of science and technology, the scale of the network has grown and expanded, and it has become an indispensable part of modern life. Is the operation of the network safe, stable, and highly efficient directly affecting whether the core business of the enterprise can be smoothly expanded? When a problem occurs in the local area network, if the physical location of the network device with the wrong network is found as soon as possible, the problem can be effectively solved in the shortest time, and the network can be quickly restored to normal operation. Therefore, the administrator must It is extremely important to be able to fully understand all the network devices in the enterprise. This is extremely important in enterprise-level IP management.

However, the relevant functional familiar products with IP management currently available on the market, and the related network location information of the managed network devices are mostly based on the list plus the network topology map (such as Figure 12). Presented. That is, the general internal network IP management basic data is often presented in an IP-MAC list to represent the communication location and computer equipment. Missing in the contents of its list The connection between the devices is lacking, and it is impossible to view the physical location of the computer device for reference information by the list or its icon.

Therefore, in practice, after the IP-MAC list, plus a connected switch connection record as a secondary, it can be used as a basic reference information for the network device entity location. However, this form still needs to be manually updated at any time, which is not only time-consuming and laborious, but also because the connection relationship of devices in the network often changes continuously, the form update record can never keep up with the speed of change of the device, and the correct result has not been obtained, resulting in capital Security difficulties.

To solve this problem, more advanced and well-known brand switch devices provide proprietary functions that can be used directly to view information about each port or to connect to a computer device. However, this is a built-in function unique to a particular brand of equipment and cannot be used in common with general label equipment. If you really want to implement it according to this method, the premise is that the enterprise must use the same high unit price of the same specific brand network equipment from top to bottom. The management can correctly understand all the networks in the network. device. However, this is obviously different from the general use of network equipment that collects different unit price and multi-brand cards. Therefore, the premise requirements are extremely unreasonable, and it is not in line with the application practice of today's universal network environment.

In view of this, the inventors have actively invested in research and ideas to find the best solution. First, when the general terminal device is connected to the switch in the network, a forwarding table can be automatically established in the switch (Switch) for smooth transfer using the network packet. When the transfer table is used to receive the packet, the next port to be sent can be queried according to the media access control MAC (Media Access Control). But only by transfer Can't be sure if the MAC in the table is actually connected to the port in the table? In this case, the connected device of the port cannot be effectively identified. Is it a desktop computer or a notebook computer (PC, NB) belonging to a general terminal device? Or a switch for a network device?

However, if you go deeper and discuss it further, if it is a switch belonging to a network device, the MAC address of the device should be in the transfer table of the port. It can be seen that if the corresponding MAC of a port in the forwarding table contains the MAC location of another switch device, then the port is not directly connected to the terminal device (link-port, not access-port), then the query should be Skip all MAC information records under this connection, because these MACs will definitely reappear in other switch forwarding tables in the network, and will eventually be judged as accepting data in only one switch.

Based on this, the main purpose of the present invention is to provide a method for obtaining a correct connection location of a network device by using a general protocol SNMP, which is used to collect all switch devices in the network, query a transfer table of each switch, and compare each analysis. Connect the data, update the record archive, until all the switches are queried to obtain the distributed connection location of the terminal devices in the network, including: Step 1. Collect all the MAC addresses of the switches in the network by the general agreement SNMP, and establish the MAC table of the device; Step 2. Query the forwarding table of each switch; the feature is: Step 3. Convert the forwarding table to the index of the connection; Step 4. Analyze each connection data one by one to determine whether any other switch MAC Now the device MAC table; if yes, perform the following step 5; if not, then Perform the following step 6; Step 5. Skip the information and return to step 2; Step 6. Update the remaining MACs and ports to the results one by one, and step 7. Determine whether all switches have been queried. If yes, return to step 2; if yes, the operation ends; thereby, the switch connection port corresponding to the network device can be obtained through the Simple Network Management Protocol (SNMP), which is a simple network management protocol. Automatically determine the switch connection to filter the invalid correspondence, and quickly obtain the correct distribution connection location of all terminal devices in the network.

100‧‧‧Query construction process

200‧‧‧Update construction process

300‧‧‧Transactional construction process

400‧‧‧Network distribution environment plan

410‧‧‧ branches

450‧‧‧Global geographical map

500‧‧‧Regional Network

901, 902, 903, 904‧‧‧ box

51‧‧‧First Management Form

52‧‧‧Second Management Form

53‧‧‧First Management Form

54‧‧‧Second Management Form

55‧‧‧First Management Form

56‧‧‧Second Management Form

S1‧‧‧ first switch

S2‧‧‧second switch

S3‧‧‧ third switch

S4‧‧‧fourth switch

C1‧‧‧First terminal equipment

C2‧‧‧second terminal equipment

C3‧‧‧Terminal terminal equipment

C4‧‧‧4th terminal equipment

P1, p2, p3‧‧‧ connection port

Figure 1 is a block diagram of the present invention.

Figure 2 is a flow chart of the query construction table of the present invention.

Fig. 3 is a view showing an application of the present invention.

Figure 4-1 is the first management chart of the present invention.

Figure 4-2 is a second management chart of the present invention.

Figure 5 is a flow chart of updating the transaction query table according to the present invention.

Figure 6 is a diagram showing an application example of a new device of the present invention.

Figure 7-1 shows the first management chart of the new device of the present invention.

Figure 7-2 is a second management chart of the newly added device of the present invention.

Figure 8 is a diagram showing an application example of the device change of the present invention.

Figure 9-1 is the first management chart of the device change of the present invention.

Figure 9-2 is a second management chart of the device change of the present invention.

Figure 10 is a schematic diagram of the integration of the invention and the network distribution environment plan information.

Figure 11 is a schematic diagram of the integration of the invention with global geographical representation information.

Figure 12 is a topographical diagram of a conventional network terminal device.

The embodiments of the present invention are disclosed in detail below by way of specific examples, and those skilled in the art can readily understand the advantages and functions of the present invention from the disclosure herein. Please refer to FIG. 1 for a block diagram of the present invention. The invention adopts the general agreement SNMP to obtain the correct connection location of the network device, and is used for collecting all the switch devices in the network, inquiring the transfer table of each switch, comparing and analyzing each connection data, updating the record archive until all The switch query is completed to obtain the distributed connection location of the terminal devices in the network, which mainly includes: block 901, a. Collecting MAC addresses of all switch devices in the network by using the general protocol SNMP, and establishing a device MAC table; block 902, b. query each device The transfer table of the switch, and the transfer table is indexed by the port; the frame 903, c. compares each link data, pairs the MAC with the port, and blocks 904, d. updates the record archive, All the switches are inquired for completion; as shown in FIG. 2, the present invention further provides a query construction process 100, which mainly includes: S01 Step 1. Collect all device MAC addresses in the network by general agreement SNMP, and establish a device MAC table; S02 Step 2. Query the transfer table of each switch; the feature is: S03 Step 3. Convert the transfer table to the connection port Index; S04 Step 4. Analyze each connection data one by one to determine whether any other switch MAC appears in the MAC table of the device. If yes, go to step 5; if no, go to step 6; S05 step 5. Skip the information and return to step 2; S06 step 6. Update the MAC and port 逐 to the result one by one, and; 7. Determine if all switches have been queried? If no, return to step 2; if yes, the action ends.

In this way, the switch port corresponding to the network device can be effectively obtained through the universal protocol SNMP, and the switch port is automatically determined to filter the invalid correspondence, and the correct distribution connection position of all terminal devices in the network is quickly obtained.

Please refer to Figure 3, for example, the internal device 500 distribution map of an enterprise, where the connection port p1 (S1) of the first switch S1 and the connection port p1 (S2) of the second switch S2 are connected. Connected, the connection port p2 (S1) of the first switch S1 is connected to the connection port p1 (S3) of the third switch S3, and the connection port p2 (S3) of the third switch S3 is provided with a third terminal device C3. And having a MAC3 for identification, and the connection port p2 (S2) of the second switch S2 is connected to a first terminal device C1 and has a MAC1 for identification; and the connection port p3 of the second switch S2 (S2) is connected to the connection port p1 (S4) of the fourth switch S4, the fourth switch S4 The connection port p2 (S4) is provided with a second terminal device C2 and has a MAC 2 for identification.

By means of the methods and steps provided by the present invention, the methods described in paragraphs 1~3 and [0007] above can be used to quickly query the internal devices of the regional network 500, and the comparison is established. The first management table 51 shown in FIG. 4-1 is configured to know that the MAC1 of the first terminal device C1 is connected to the port 2 of the second switch S2, and the MAC2 of the second terminal device C2 is connected. The connection port p2 of the four switch S4, and the MAC3 of the third terminal device C3 are connected to the connection port p2 of the third switch S3, and the second management table 52 as shown in FIG. 4-2, to know the Whether each of the first to fourth switches S1 to S4 is connected to the port p1, p2 or p3 is only a connected path (T) or a connected device (F); the first management table 51 and the second management table 52 are collected. The results of the two interactive comparisons can obtain the real connection location of each terminal device in the regional network 500, and the table construction query is simpler, time-saving and trouble-free, and the actual connection distribution data of each terminal device is more detailed. Accurate, can provide easy maintenance of security management Master.

As shown in the figures 5, 6, 7-1, and 7-2, the preferred embodiment of the present invention may further include an update table construction process 200, which mainly includes: S08 Step 8. Determine whether to update the data. If yes, go to step 2; if no, the action ends. Routine maintenance of the area network 500, or when there are new devices, it is convenient for the administrator to update the latest distribution of devices in the network through the update table construction process 200, for example, as shown in Fig. 6, when the area is The internal connection of the network 500 to the fourth switch S4埠 When the fourth terminal device C4 is added to the port p3 (S4), the same MAC4 is provided for identification. With the effective method provided by the present invention and the step 8 of S08, the query and analysis can be quickly performed to compare the internal devices of the regional network 500. The updated first management table 53 (such as Figure 7-1) and the second management table 54 (such as Figure 7-2) are established, so that the administrator can clearly grasp the internal devices of the regional network 500 at any time. The real connection distribution location.

As shown in FIG. 5, 8, 9-1, and 9-2, the preferred embodiment of the present invention may further include a transaction configuration process 300, which mainly includes: S09 step 9. determining whether the switch in the network has a change. If yes, go to step 1; if no, the action ends. In addition to the increase or decrease of equipment in the local area network 500, other departments may face the expansion or downsizing of the department to cause the equipment to move. The manager can use the transaction table 300 to facilitate the update of the latest distribution after the device changes in the network. For example: 8 is shown, when the third terminal device C3 and the fourth switch S4 in the area network 500 are connected with the connection position of the second terminal device C2 and the fourth terminal device C4 connected thereto, the same can be provided by the present invention. The effective method and step S9 of S09, quickly perform query analysis to compare the internal devices of the regional network 500, and establish a first management table 55 (such as Figure 9-1) and a second management table 56 (such as the first) 9-2), so that the manager can clearly grasp the real connection location of each device in the regional network 500 at any time.

For example, in the preferred embodiment of the present invention, the data of the first to fourth terminal devices C1 to C4 in the area network 500 may further include: an IP address and a MAC address of each device. And the host name data, corresponding to a single network location; and then integrated with a network distribution environment plan 400 information, and the associated network terminal devices C1~C4 are correspondingly displayed as physical location display. Or as shown in Figure 11, further expand the cross-regional enterprise The branch 410 integrates with the global geographic representation 450 information presentation (such as Google Map) information integration.

In this way, it is very easy to make the network fault diagnosis and elimination possible by facilitating the security management and documentation to update and maintain the use. Directly from the global geographical map 450 and the network distributed environment plan 400 in comparison with the displayed physical location of the entity, it is easy to find the network plane device C1~C4 where the problem occurs, and the relative position of the building is directly displayed. For effective troubleshooting, the network can be quickly and smoothly returned to normal.

In summary, the novel method of the present invention has significant progress compared with the conventional ones, and also has industrial availability, fully conforms to the patent requirements, and proposes an invention patent application. The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto; therefore, the simple equivalent changes and modifications made by the scope of the patent application and the content of the invention are All should remain within the scope of the invention patent.

S1‧‧‧ first switch

S2‧‧‧second switch

S3‧‧‧ third switch

S4‧‧‧fourth switch

C1‧‧‧First terminal equipment

C2‧‧‧second terminal equipment

C3‧‧‧Terminal terminal equipment

P1, p2, p3‧‧‧ connection port

Claims (5)

A method for obtaining a correct connection location of a network device by using a general protocol SNMP is used to collect all switch devices in the network, query a transfer table of each switch, compare and analyze each connection data, and update the record archive until all switches The query is completed to obtain the distributed connection location of the terminal devices in the network, and the main steps include: Step 1. Collect all device MAC addresses in the network by using the general protocol SNMP, and establish a device MAC table; Step 2. Query the forwarding table of each switch; The method is characterized in that: step 3. convert the forwarding table into an index based on the connection; step 4. analyze each connection data one by one to determine whether any other switch MAC appears in the MAC table of the device; if yes, execute Step 5 below; if not, perform the following step 6; Step 5. Skip the information and return to step 2; Step 6. Update the remaining MACs and ports to the results one by one, and step 7; Determining whether all the switches have been queried; if not, returning to step 2; if yes, the action ends; thereby, it can effectively pass the general protocol SNMP, To give the corresponding switches of network equipment ports, and automatically determines the correct position of the distribution switch is connected to port correspondence relationship invalid filters, fast access to all terminal devices within the network. For example, in the method of claim 1, the general agreement SNMP is used to obtain the correct connection location of the network device, and further includes an update table construction process, that is, adding a step 8. determining whether to Update the data; if yes, perform step 2 above; if no, the action ends. For example, in the method of claim 1, the general agreement SNMP is used to obtain the correct connection location of the network device, and further, a transaction establishment process is further provided, that is, adding a step 9. determining whether the switch or the terminal device in the network has a change; , perform the foregoing step 1; if not, the action ends. The method for obtaining the correct connection location of the network device by using the universal protocol SNMP according to any one of the claims 1, 2 or 3, further obtaining the data of each terminal device in the network, including: the IP of the terminal device The address, the MAC address, and the host name data are corresponding to a single network location; and then integrated with a network distribution environment floor plan information, and the managed network terminal device is correspondingly displayed as an entity geographic location display. The method for obtaining the correct connection location of the network device by using the SNMP protocol in the general agreement SNMP according to item 4 of the patent application scope, wherein the network terminal device corresponds to the physical geographic location, and is further integrated with the global geographical graphic information.