JP5282063B2 - Network route display method, cable removal method, network route display system - Google Patents

Description

  The present invention relates to a network route display method for displaying a network route, a cable removal method for removing a LAN cable in accordance with the display of the network route, and a network route display system.

  When configuring a network, a LAN (Local Area Network) cable may be used. LAN cables are used for connection of network devices such as switching hubs and routers.

  When a service provided by a server via a network is stopped, an unnecessary LAN cable connected to a network device may be removed (removed). Patent Document 1 describes a wiring support system that makes wiring work more efficient for such a network using a database, IC tag, or the like that stores wiring management information.

JP 2006-54118 A

  When the network becomes complicated, many LAN cables are complicatedly connected to many network devices. In the cable drawing operation as described above, it is necessary to remove the target cable from these complicated connection configurations. However, it is not easy to remove a desired cable from many cables connected to a network device, which causes an accident when the wrong cable is removed or removed. In the method of Patent Document 1, it is possible to suppress erroneous cable removal and accidents at the time of removal, but it is necessary to attach an IC tag or the like to the panel of the wiring board.

  On the other hand, examining the connection path between hosts in the network may be effective in determining the correct removal position. For example, UNIX (registered trademark) has a traceroute command as a command for displaying a connection route (tracert in Windows (registered trademark)).

  For example, when a traceroute command is executed by specifying the IP address of a server whose network route is to be checked on a computer connected to the network, the computer sets an TTL (Time To Live) value to 1 and an echo request packet including an echo request. Is sent to the IP address. A network device such as a router or a switching hub receives the packet and reduces the TTL value. If the value is not 0, the network device transmits an echo request packet to the next network device or the like on the route. However, if it is 0, an error packet is transmitted to the computer that is the packet transmission source. When the computer receives the error packet, the computer again transmits an echo request packet with the TTL value incremented by 1 to the IP address of the server. This is repeated until the echo request packet reaches the server IP address. When the server receives the echo request packet, it sends the echo packet to the computer. The connection path to the server can be expressed as a list of IP addresses of network devices that have performed the above processing and transmitted an error packet.

  For example, assume that there is a network 100 as shown in FIG. The network 100 includes network devices such as the switching hubs 110, 120, 140, and 150 and the router 130, LAN cables 210, 220, 230, 240, 250, and 260, and the computer 200 and the server 300 are connected to the network 100. The switching hubs 110 and 150 are L2 switching hubs, and the switching hubs 120 and 140 are L3 switching hubs. Each network device has a connection port for connecting a LAN cable. In addition, no IP address is assigned to the switching hubs 110 and 150, and an IP address is assigned to the switching hubs 120 and 140.

  Here, when the computer 200 designates the IP address of the server 300 and executes the traceroute command, as shown in FIG. 4B, the network path from the computer 200 to the server 300 is the IP address of the network device in the middle of the path. Are displayed on the computer 200 as a list.

  However, as a result of executing the traceroute command, the IP address of the connection port on the computer 200 side (packet receiving side) is displayed as the IP address of each network device, and in the switching hub 110 or the like to which no IP address is assigned, the IP address Is not displayed. There is a possibility that the LAN cable can be pulled out from any connection port, and it is not efficient to check the connection port from the IP address when pulling out the network. It is difficult to use the traceroute command for the purpose.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a network route display method and the like that contributes to the efficiency of drawing out LAN cables.

  According to a first aspect of the present invention for achieving the above object, there is provided a network path in a network including at least a connection port and an indicator corresponding to the connection port, and a LAN cable connected to the network device at the connection port. A network path display method for displaying a network, wherein a predetermined command is executed by an information processing terminal connected to the network, and an indicator corresponding to a connection port that has received a packet and a connection port that has transmitted the packet is emitted to a network device. A port light emission packet transmission step for transmitting a port light emission packet including a port light emission request to be transmitted to a predetermined transmission destination of the network; and the network device receives the port light emission packet and transmits it to the next transmission destination. Transmits and is a network route display method characterized by comprising a port light emitting step of emitting the indicator corresponding to the connection port that sent the connection port and which receives said port luminous packet.

  In addition, it is desirable to change a time or a form in which the indicator emits light in the port light emission step according to the predetermined command.

  The network path display method according to the first aspect of the invention corresponds to a connection port that has received a packet and a connection port that has transmitted a packet to a network device by executing a predetermined command by an information processing terminal connected to the network. A port light emission cancellation packet transmission step for transmitting a port light emission cancellation packet including a port light emission cancellation request for returning the light emission state of the indicator to a predetermined transmission destination of the network; and A port emission cancellation step for receiving a packet and transmitting it to the next transmission destination, and returning the light emission state of the connection port that has received the port emission cancellation packet and the indicator corresponding to the connection port that has transmitted the packet, May further be provided.

  According to a second aspect of the invention for achieving the above object, in a network including at least a network device having a connection port and an indicator corresponding to the connection port, and a LAN cable connected to the network device at the connection port, a LAN cable is provided. Is a method for removing a cable, wherein a predetermined command is executed by an information processing terminal connected to the network, and the network port is made to emit indicators corresponding to the connection port that received the packet and the connection port that transmitted the packet. A port emission packet transmission step of transmitting a port emission packet including a port emission request to a predetermined transmission destination of the network, and the network device receives the port emission packet and transmits it to the next transmission destination. And send And a port emission step for emitting an indicator corresponding to the connection port that has received the port emission packet and the connection port that has transmitted the packet, and a cable for removing the LAN cable at at least one of the connection ports corresponding to the emitted indicator A cable extraction method comprising: an extraction step.

  According to a third aspect of the present invention for achieving the above object, at least a network device having a connection port and an indicator corresponding to the connection port, which constitutes a network, and a LAN cable connected to the network device at the connection port are provided. The network device has a connection port that has received a packet for the network device transmitted to a predetermined destination of the network by an information processing terminal connected to the network executing a predetermined command And receiving the port light emission packet including the port light emission request for causing the indicator corresponding to the connection port that transmitted the packet to emit light, and transmitting the packet to the next transmission destination, and the connection port that has received the port light emission packet and the same Corresponding to the connection port that sent It is a network route display system, characterized in that emit light indicator.

  With the above configuration, a port emission request for executing a predetermined command by an information processing terminal such as a computer connected to the network and causing the network device to emit an indicator corresponding to the connection port that has received the packet and the connection port that has transmitted the packet is issued. The included port light emission packet is transmitted to a predetermined transmission destination of the network. The network device that has received this receives the port light emission packet and transmits it to the next transmission destination, and causes the connection port that has received the port light emission packet and the indicator corresponding to the connection port that has transmitted the light to be emitted. As a result, the network path between the hosts can be visually recognized as a connection port to which the cable is connected. When the service by the server is not required, the LAN cable of the connection port corresponding to the indicator that emits light is pulled out. Contributes to the efficiency of drawing work. In addition, the fact that the connection port where the port light-emitting packet is transmitted / received in the network route can be visually recognized not only makes the cable extraction work efficient, but also allows the connection port where the packet is normally transmitted / received to be visually confirmed. It is also useful for problem isolation when a failure occurs.

  In addition, according to the contents of the command, the time or the form in which the indicator is lighted in the port light emission step can be changed. Similarly to the port light emission packet, by sending a port light emission release packet including a port light emission release request for returning the light emission state of the port, the light emission state of the indicator can be released at an appropriate timing. If the transmission destination of the light emitting packet is wrong, the light emitting state of the indicator can be restored immediately.

  According to the present invention, it is possible to provide a network route display method or the like that contributes to improving the efficiency of the LAN cable pull-out operation.

Diagram showing an example of a network Flow chart showing the procedure of the network route display method The figure which shows an example of the display state of a network route The figure which shows an example of the display method of a network route

  Hereinafter, an embodiment of a network route display method according to the present invention will be described in detail with reference to the drawings. First, a network to which the network route display method of this embodiment is applied will be described with reference to FIG.

  As shown in FIG. 1, the network 1 includes network devices such as switching hubs 7, 9, 11, 13 and a router 10, and LAN cables 21, 23, 25, 27, 29, 31, and the like. The server 5 is connected. Switching hubs 7 and 13 are L2 switching hubs, and switching hubs 9 and 11 are L3 switching hubs. Here, the switching hubs 7 and 13 are not assigned IP addresses, and the switching hubs 9 and 11 are assigned IP addresses. Of course, the part which comprises the network 100 is not restricted to this, For example, a firewall, a server load balancer, etc. may be provided as a network apparatus. Each network device is provided with a control unit such as a CPU, a ROM, and a memory, a connection port for connecting a LAN cable, an indicator that emits light in response to a port light emission request described later corresponding to each connection port, and the like. The ROM stores a program for analyzing packet data and performing control such as data transmission / reception and indicator light emission described later.

  The LAN cables 21, 23, 25, 27, 29, 31 connect network devices or the computer 3 and the server 5 to the network devices.

  The LAN cable 21 connects the computer 3 and the switching hub 7. Similarly, the LAN cable 23 connects the switching hubs 7 and 9, the LAN cable 25 connects the switching hub 9 and the router 10, the LAN cable 27 connects the router 10 and the switching hub 11, the LAN cable 29 connects the switching hubs 11 and 13, and the LAN. The cable 31 connects the switching hub 13 and the server 5.

  Each network device is provided with a connection port for connecting a LAN cable. For example, the connection ports 7a (7a-1,...), 9a (9a-1,...), 11a (11a-1,...), 13a (13a) are connected to the switching hubs 7, 9, 11, and 13. -1), and the router 10 is provided with connection ports 10a (10a-1,...). In the network 1 shown in FIG. 1, the end portions of the LAN cables 21 and 23 are connected to the connection ports 7a-2 and 7a-8 of the switching hub 7, respectively. Similarly, the end portions of the LAN cables 23 and 25 are connected to the connection ports 9a-4 and 9a-1 of the switching hub 9, respectively, and the LAN cables 25 and 27 are connected to the connection ports 10a-4 and 10a-3 of the router 10, respectively. Are connected to the connection ports 11a-1 and 11a-2 of the switching hub 11, and the ends of the LAN cables 27 and 29 are connected to the connection ports 13a-8 and 13a of the switching hub 13, respectively. -2 are connected to the ends of the LAN cables 29 and 31, respectively.

  In this embodiment, an indicator such as an LED that emits light in response to a port light emission request to be described later, corresponding to the connection port of each network device is provided. For example, the switching hub 7 is provided with indicators 7b (7b-1,...) Corresponding to the connection ports 7a (7a-1,. Similarly, the connection ports 9a (9a-1, ...), 11a (11a-1, ...), 13a (13a-1, ...) are also applied to the switching hubs 9, 11, 13, and the router 10. 10a (10a-1, ...), indicators 9b (9b-1, ...), 11b (11b-1, ...), 13b (13b-1, ...), 10b (10b-1, ...) is provided.

  Next, with reference to FIGS. 2 and 3, an embodiment of the network route display method of the present invention will be described focusing on the processing in each network device. In the present embodiment, an example in which a network path between the computer 3 and the server 5 is displayed will be described.

  In the network route display method of the present embodiment, first, the computer 3 displays the connection port (reception port) that received the packet together with the IP address of the server 5 and the indicator corresponding to the connection port (transmission port) that transmitted the packet for a predetermined time. A port light emission packet including a port light emission request for light emission is transmitted by executing a predetermined command.

  The predetermined command includes a port light emission request for causing each network device to emit an indicator corresponding to the reception port and the transmission port for a predetermined time, and is transferred between the network devices to the final transmission destination such as traceroute and ping. For example, a traceroute command or a ping command in which the port light emission request portion is set as an option can be used. Each network device is provided with a function of analyzing packet data and emitting indicators corresponding to the reception port and the transmission port for a predetermined time in response to these requests. The time for which the indicator emits light is not particularly limited, and may be determined in advance as a part of the port light emission request, but may be changed by a command option or the like. By setting the flash time, the flash status of the indicator can be automatically restored to the original state without any additional processing, and by changing the flash time, the flash time can be changed according to the work after the network route is displayed. Can be determined as appropriate.

  Then, as shown in FIG. 2, the network device such as the switching hub 7 on the network path from the computer 3 to the server 5 first receives a packet transmitted from the computer 3 from the connection port (reception port) ( Step 101).

  The CPU of the network device analyzes and determines the received packet data, and if it is a port emission packet to be transmitted to the next transmission destination such as the network device or server (“YES” in step 102), the packet is A connection port (transmission port) to be transmitted is selected, and indicators corresponding to the reception port and the transmission port are caused to emit light based on the port emission request (step 103). Then, the port light emission packet is transmitted to the next transmission destination (step 104). Note that the switching hubs 7 and 11 are L2 switching hubs to which no IP address is assigned (the traceroute command is not subjected to processing related to this and only passes packets). For such network devices, it is determined that the reception port and the transmission port emit light. If there is a network device that transmits and receives data without going through a LAN cable (connection port) such as a wireless LAN in the middle of the route, it can be determined that only packet transfer is performed in a section not through the LAN cable. Good.

  If it is not a port light emission packet to be transmitted to the next transmission destination (“NO” in step 102), the packet is appropriately processed, and the port light emission packet is received again. Note that when a port emission request is defined as an option of the traceroute or ping command, the port emission packet received by the network device may be discarded without being transmitted (such as when TTL becomes 0). Anyway, all the networks on the route to the server 5 when the network is normal by increasing the TTL value in the traceroute command and transmitting the packet again, or by appropriately determining the TTL value in the ping command It is possible to cause the device to transmit a packet, and to light up the reception ports and transmission ports of all the network devices on the route.

  The form in which the indicator emits light is not particularly limited to lighting, blinking, color, etc., and may be determined in advance as part of the port light emission request, but in the case of lighting, blinking, or blinking, the interval, etc. The form in which the indicator emits light can also be changed by a command option or the like. By making it possible to change the form of light emission, it is also possible to distinguish between indicator light emission due to a command executed by oneself and indicator light emission due to a command executed by another person on another computer, which is displayed by oneself. This is effective when a part of the network device overlaps the network route and the network route displayed by others.

  When the next transmission destination is a network device, the same processing as Step 101 to Step 104 is performed on the network device. Each network device emits the indicators corresponding to the reception port and the transmission port of the port light emission packet while delivering the port light emission packet to the server 5. Thus, in the network 1, as shown in FIG. 3, the indicator 7b-2 corresponding to the connection port 7a-2 (reception port) of the switching hub 7 and the indicator 7b corresponding to the connection port 7a-8 (transmission port). -8 emits light for a predetermined time. Similarly, the indicators corresponding to the reception port and transmission port of the port emission packet for each network device emit light for a predetermined time. That is, the indicators 9b-4 and 9b-1 in the switching hub 9, the indicators 10b-4 and 10b-3 in the router 10, the indicators 11b-1 and 11b-2 in the switching hub 11, and the indicator 13b- in the switching hub 13. 8 and 13b-2 emit light for a predetermined time.

  Each network device emits an indicator until a predetermined time elapses (“NO” in step 105), and when the predetermined time elapses (“YES” in step 105), the indicator light emission state of the reception port and the transmission port is canceled. Then, the original state is restored (step 106).

  The indicator light emission state is canceled based on the light emission state of the indicator corresponding to the reception port and transmission port of the packet together with the IP address of the transmission destination, as in the case of the port light emission packet. The port light emission cancellation packet including the port light emission cancellation request for returning is transmitted, and each network device that has received the packet delivers the packet in the same manner as in the case of the port light emission packet. The light emitting state may be canceled and returned to the original state. As in the case of the port light emission packet, the light emission state of the indicators of the reception ports and transmission ports of all the network devices on the route can be returned to the original state while delivering the port light emission release packet to the server 5. Thereby, the light emission state of the indicator can be canceled at an appropriate timing, and the light emission state of the indicator can be restored immediately when the transmission destination of the port light emission packet is wrong.

  An operator who removes the LAN cable, such as when the service is stopped by the server 5, is connected to a connection port corresponding to the indicator while viewing the indicator on the appropriate network device while the indicator is on. Remove the connected LAN cable. By checking the light emission state of the indicator and identifying the LAN cable to be removed in the connection path with the server 5, the LAN cable to be removed can be quickly removed at the corresponding position, and the wrong LAN cable is removed. Nothing will happen.

  In addition, the fact that the network path between hosts can be seen as a connection port to which a cable is connected not only improves the efficiency of cable extraction work, but also allows you to know the port through which packets are normally transmitted and received. It is also useful for problem isolation when a failure occurs. That is, it is possible to visually recognize how far the network path is functioning normally.

  As described above, according to the embodiment of the present invention, a predetermined command is executed by an information processing terminal such as the computer 3 connected to the network 1 and a packet is received by the network device such as the switching hub 11 and the router 10. The port light emission packet including the port light emission request for causing the indicator corresponding to the connection port and the connection port that transmitted the packet to emit light is transmitted to a predetermined transmission destination such as the server 5. The network device that has received this receives the port light emission packet and transmits it to the transmission destination of the next network device, etc., and the connection port that has received the port light emission packet and the indicator corresponding to the connection port that has transmitted the port light emission packet To emit light. Thereby, the network path between the hosts can be visually recognized as a connection port to which the cable is connected, and when the service by the server 5 is unnecessary, by pulling out the LAN cable of the connection port corresponding to the indicator that emits light, This contributes to the efficiency of cable drawing work. In addition, the fact that the connection port where the port light-emitting packet is transmitted / received in the network route can be seen not only makes the cable extraction work more efficient, but also because the port where the packet was successfully sent / received is visually recognized. It is also useful for isolating time problems.

  In addition, depending on the content of the command, the time or the form in which the indicator is lit can be changed. Similarly to the port light emission packet, by sending a port light emission release packet including a port light emission release request for returning the light emission state of the port, the light emission state of the indicator can be released at an appropriate timing. If the transmission destination of the light emitting packet is wrong, the light emitting state of the indicator can be restored immediately.

The preferred embodiments of the network route display method and the like according to the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such examples. It will be apparent to those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea disclosed in the present application, and these naturally belong to the technical scope of the present invention. Understood.
For example, the network route to be displayed is not limited to the server having the end point as a server, but can be determined as appropriate in the network.

1 ... Network 3 ... Computer 5 ... Server 7, 9, 11, 13 ... Switching hub 7a, 9a, 10a, 11a, 13a ... Connection port 7b, 9b, 10b, 11b, 13b ……… Indicator 10 ……… Router

Claims (5)

A network path display method for displaying a network path in a network device including a connection port and an indicator corresponding to the connection port, and a network including at least a LAN cable connected to the network device in the connection port,
A port emission packet including a port emission request for executing a predetermined command by an information processing terminal connected to the network and emitting an indicator corresponding to the connection port that has received the packet and the connection port that has transmitted the packet to the network device. A port light emission packet transmission step for transmitting to a predetermined destination of the network;
The network device receives the port emission packet and transmits it to the next transmission destination, and also emits a connection port that has received the port emission packet and an indicator corresponding to the connection port that has transmitted the port emission packet. Steps,
A network route display method comprising:   2. The network route display method according to claim 1, wherein a time or a form in which the indicator emits light is changed in the port light emission step in accordance with the predetermined command. A port light emission release request for executing a predetermined command by the information processing terminal connected to the network and returning the light emission state of the indicator corresponding to the connection port that has received the packet and the connection port that has transmitted the packet to the network device is returned. A port light emission cancellation packet transmission step for transmitting a port light emission cancellation packet to a predetermined transmission destination of the network;
The network device receives the port light emission release packet and transmits it to the next transmission destination. The connection port that has received the port light emission release packet and the light emission state of the indicator corresponding to the connection port that has transmitted the port light emission state are displayed. The port flash release cancellation step to restore,
The network route display method according to claim 1, further comprising: A cable removal method for removing a LAN cable in a network including at least a connection port and an indicator corresponding to the connection port, and a LAN cable connected to the network device at the connection port,
A port emission packet including a port emission request for executing a predetermined command by an information processing terminal connected to the network and emitting an indicator corresponding to the connection port that has received the packet and the connection port that has transmitted the packet to the network device. A port light emission packet transmission step for transmitting to a predetermined destination of the network;
The network device receives the port emission packet and transmits it to the next transmission destination, and also emits a connection port that has received the port emission packet and an indicator corresponding to the connection port that has transmitted the port emission packet. Steps,
A cable removal step of removing the LAN cable at at least one of the connection ports corresponding to the indicator that emits light;
A cable extraction method comprising: A network device having a connection port and an indicator corresponding to the connection port, which constitutes a network, and a LAN cable connected to the network device at the connection port;
The network device includes a connection port and a packet that are transmitted to a predetermined transmission destination of the network when the information processing terminal connected to the network executes a predetermined command and receives the packet to the network device. A port light emission packet including a port light emission request for causing the indicator corresponding to the transmitted connection port to emit light is received and transmitted to the next transmission destination, and the connection port that has received the port light emission packet and the same are transmitted. A network route display system characterized by causing an indicator corresponding to a connection port to emit light.

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