JP5195229B2 - Network, relay node, control parameter setting method, and program - Google Patents

Description

  The present invention relates to a network, a relay node, a control parameter setting method, and a program.

  Conventionally, in a network, by setting a filter in a device in the network, a band that can be used for each user is limited or a frame is discarded. However, in the conventional network management, the network administrator has to set the filter for each of the devices to be filtered, so even if the same setting is performed, the more devices, the more proportional As a result, the amount of work increases.

Therefore, a technique for setting / changing a control parameter in a specific relay node by generating a series of control commands according to a request message and sequentially transmitting these control commands to the specific relay node has been proposed (for example, , See Patent Document 1).
JP 2007-194785 A

  However, in Patent Document 1 described above, it is necessary to specify a relay node whose control parameter is to be changed. When the same setting is performed on a plurality of relay nodes, it is necessary to perform setting as many as the number of relay nodes. There is a problem that the more relay nodes, the more work is required. Therefore, it is not suitable for a network service that needs to set control parameters as the number of users increases.

  The present invention has been made in consideration of such circumstances, and an object of the present invention is to provide a network, a relay node, and a control parameter setting method capable of easily changing control parameters of a plurality of relay nodes interposed in the network. , And to provide a program.

In order to solve the above-described problems, the present invention is a network comprising a transmission side host, a reception side host, and one or more relay nodes inserted in the transmission path between the transmission side host and the reception side host. When the relay node determines that the frame is an input unit, a frame branching unit that determines whether the input frame is a setting frame, and the frame branching unit determines that the frame is a setting frame, Setting information extracting means for extracting setting information from the frame; and setting means for setting a control parameter based on the setting information extracted by the setting information extracting means, wherein the frame branching means a setting frame, and the destination address is the broadcast of the frame, or, if a multicast, and inputs frame Thereby transferring the setting information extracting unit, while transferring a copy of a frame input to the output means for outputting the frame to the subsequent stage, a frame is set frame input and the destination address of the frame is a unicast In this case, the network transfers the input frame to the setting information extraction means without transferring a copy of the frame input to the output means.

In order to solve the above-described problem, the present invention includes one or more relay nodes inserted in a network that transmits a frame from a transmission side host to a reception side host, and an input unit that inputs the frame. A frame branching unit that determines whether or not the input frame is a setting frame; and a setting information extraction unit that extracts setting information from the frame when the frame branching unit determines that the input frame is a setting frame; Setting means for setting a control parameter based on the setting information extracted by the setting information extracting means, and the frame branching means, the input frame is a setting frame, and the destination address of the frame is broadcast, Or, if it is multicast, the input frame is transferred to the setting information extracting means, and While forward a copy of the frame input to the output means for outputting the frame to the subsequent frame input is set frame, and the destination address of the frame in the case of unicast, and input to the output means A relay node that transfers an input frame to the setting information extraction unit without transferring a copy of the frame.

In order to solve the above-described problem, the present invention provides a control parameter setting method for one or more relay nodes inserted in a network that transmits a frame from a transmission side host to a reception side host. destination address from the host broadcast, multicast, or a step of inputting a unicast frame, the steps of frame input to determine whether or not the setting frame, a frame is set frame entered and, If the destination address of the frame is broadcast or multicast, the setting information is extracted from the frame and the input frame is transferred to the subsequent stage, while the input frame is the setting frame and the destination address of the frame There when a unicast, subsequent frames Without transferring a step and the control parameter setting method characterized by including the step of setting the control parameters of the relay node based on the extracted setting information to extract configuration information from the frame.

In order to solve the above-described problem, the present invention includes a step of inputting a frame to a computer of one or more relay nodes inserted in a network that transmits a frame from a transmission side host to a reception side host; A step of determining whether or not the input frame is a setting frame; a step of determining whether or not the destination address of the input frame is unicast if the input frame is a setting frame; and an input frame Is a setting frame and the destination address of the frame is not unicast, the input frame is transferred to the subsequent stage, the setting information is extracted from the frame, and the input frame is the setting frame. and a frame destination address of the frame in the case of unicast, entered Without transferring the subsequent stage, a step and a program for causing and a step of setting the control parameters of the relay node based on the extracted setting information to extract configuration information from the frame.

  According to the present invention, there is an advantage that control parameters of a plurality of relay nodes interposed in the network can be easily changed.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

A. Embodiment FIG. 1 is a block diagram showing a configuration of a network according to an embodiment of the present invention. In the figure, the network 1 includes a transmission side host 2, a reception side host 5, and relay nodes 3 and 4 inserted in a transmission path between the transmission side host 2 and the reception side host 5. The transmission side host 2 transmits a “setting frame” using an Ether frame to the reception side host 5 by broadcast, multicast, or unicast. The reception side host 5 receives the Ether frame sent from the transmission side host 2 via the relay nodes 3 and 4.

  The relay nodes 3 and 4 receive the Ether frame sent from the transmission side host 2, analyze the payload portion of the frame, and if the setting frame is determined in advance, the setting is inserted in the data portion. The power filter setting value is extracted and the filter setting value is set in itself, while the received Ether frame is transmitted to the receiving host 5.

  FIG. 2 is a block diagram illustrating a configuration example of the relay nodes 3 and 4 according to the present embodiment. In FIG. 2, the input side port 12 receives a frame sent from the transmission side. The output side port 13 transmits the frame received from the transmission side to the reception side. If the frame received at the input side port 12 is a setting frame, the branching unit 14 transfers the frame to the analysis unit 15. If the frame received at the input side port 12 is a frame other than the setting frame, the branching unit 14 transfers to the output side port 13. Forward.

  Further, the branching unit 14 transfers a copy of the frame to the output side port 13 if the frame received at the input side port 12 is a setting frame and the destination MAC address is a broadcast address or a multicast address. The analysis unit 15 analyzes the payload portion of the frame transferred from the branching unit 14, extracts the filter setting value to be set, and transfers it to the setting unit 16. The setting unit 16 sets the filter setting value transferred from the analysis unit 15 in the relay nodes 3 and 4.

  Next, FIG. 3 is a conceptual diagram showing an example when the control parameter setting of the relay node is performed in the layer 2 frame format according to the present embodiment. In FIG. 3, in the DEST MAC, the destination MAC address can be changed to UC (unicast) / BC (broadcast) / MC (multicast), so the relay node to be set is designated not only by 1: 1 but also by 1: N. can do. By setting a predetermined value in Ether Type, it is possible to identify whether it is a setting frame. The set value of the control parameter to be set is entered in DATA. By limiting the function to a filter, it can be provided as binary data. In addition, by providing a command as text data, the function can be used without being limited to a filter.

  Next, FIG. 4 is a conceptual diagram illustrating another example when the control parameter setting of the relay node is performed in the layer 2 frame format according to the present embodiment. In FIG. 4, each relay node can identify whether or not it is a setting frame by reserving a certain value of the VLAN ID to be inserted into the VLAN tag for setting frame identification.

  Next, FIG. 5 is a conceptual diagram illustrating an example in which the control parameter setting of the relay node is performed in the layer 3 packet format according to the present embodiment. In FIG. 5, it is possible to identify whether or not the packet is a setting packet by setting a predetermined value in the Protocol part. In DEST ADDR, since the destination IP address can be changed to UC / BC / MC, the relay node to be set can be designated not only as 1: 1 but also as 1: N.

Next, the operation of this embodiment will be described.
FIG. 6 is a flowchart for explaining the operation of changing the filter setting value in the relay node 3 according to the present embodiment. The operation of the relay node 4 is the same. In the relay node 3, the frame received at the input side port 12 is transferred to the branching unit 14. The branching unit 14 determines whether or not the received frame is a setting frame (step Sa1). If the received frame is not a setting frame, the branching unit 14 transfers the frame to the output side port 12 and proceeds to step Sa1. Return. Therefore, in this case, the filter setting value of the relay node 3 is not changed.

  On the other hand, if the received frame is a setting frame, it is determined whether or not the setting frame is a unicast frame (step Sa2). If the setting frame is not a unicast frame, the branching unit 14 sets the frame. After the copy of the frame is transferred to the output side port 13, the setting frame is transferred to the analysis unit 15 (step Sa3). As a result, when the setting frame is broadcast or multicast, it is transferred to the next relay node (for example, relay node 4). On the other hand, when the setting frame is a unicast frame, the setting frame is transferred to the analysis unit 15 without being transferred to the next relay node (YES in step Sa2).

  Next, in any case, the analysis unit 15 extracts the filter setting value from the payload portion of the transferred setting frame, and transfers the filter setting value to the setting unit 16 (step Sa4). Next, the setting unit 16 sets the transferred filter setting value in the device (step Sa5), and then returns to step Sa1 to repeat the above-described processing.

  Through the operation described above, the filter setting value of the relay node can be changed by receiving the setting frame having the filter setting value in the payload portion.

According to the embodiment described above, the following effects can be obtained.
(1) Since the filter setting value of the relay node can be changed by receiving the setting frame, the network administrator does not need to manually change the filter setting value for all the relay nodes. .
(2) Since the setting frame is transmitted from the transmission side host, if the transmission side host has a frame transmission function using a timer, the filter setting value can be easily changed according to the time zone. .
(3) By setting the destination address to unicast, multicast, or broadcast, it is possible to set 1: 1 or 1: N as necessary. That is, it can be set for a plurality of relay nodes.

B. Other Embodiments Next, other embodiments of the present invention will be described.
FIG. 4 is a block diagram showing the configuration of the relay nodes 3 and 4 according to another embodiment of the present invention. It should be noted that parts corresponding to those in FIG. In FIG. 4, the extraction unit 25 analyzes the payload portion of the frame transferred from the branching unit 24, and extracts the command to be set inserted in the data portion when the setting frame is determined in advance. To the setting unit 26. The setting unit 26 sets the control parameters of the relay nodes 3 and 4 according to the command transferred from the extraction unit 25.

Next, the operation of the other embodiment will be described.
FIG. 5 is a flowchart for explaining the operation of changing the filter setting value in the relay node 3 according to the other embodiment. In the relay node 3, the frame received at the input side port 12 is transferred to the branching unit 14. The branching unit 14 determines whether or not the received frame is a setting frame (step Sb1). If the received frame is not a setting frame, the branching unit 14 transfers the frame to the output side port 12 and proceeds to step Sb1. Return. Therefore, in this case, the control parameter of the relay node 3 is not changed.

  On the other hand, if the received frame is a setting frame, it is determined whether or not the setting frame is a unicast frame (step Sb2). If the setting frame is not a unicast frame, the branching unit 14 sets the frame. After the copy of the frame is transferred to the output side port 13, the setting frame is transferred to the extraction unit 25 (step Sb3). As a result, when the setting frame is broadcast or multicast, it is transferred to the next relay node (for example, relay node 4). On the other hand, when the setting frame is a unicast frame, the setting frame is transferred to the extraction unit 25 without being transferred to the next relay node (YES in step Sb2).

  Next, in any case, the extraction unit 25 extracts a command from the payload portion of the transferred setting frame, and transfers the extracted command to the setting unit 16 (step Sb4). Next, the setting unit 16 sets the control parameters of the device according to the transferred command (step Sb5), and then returns to step Sb1 to repeat the above-described processing.

  According to the other embodiment, not only the filter setting value of the relay node but also various control parameters of the relay node can be changed by receiving the setting frame having a command in the payload portion.

It is a block diagram which shows the structure of the network by embodiment of this invention. It is a block diagram which shows the structural example of the relay nodes 3 and 4 by this embodiment. It is a conceptual diagram which shows an example in the case of performing the control parameter setting of a relay node by the frame format of a layer 2 by this embodiment. It is a conceptual diagram which shows the other example at the time of performing the control parameter setting of a relay node by the frame format of a layer 2 by this embodiment. It is a conceptual diagram which shows an example in case the control parameter setting of a relay node is performed by the packet format of a layer 3 by this embodiment. 6 is a flowchart for explaining an operation of changing a filter setting value in the relay node 3 according to the present embodiment. It is a block diagram which shows the structure of the relay nodes 3 and 4 by other embodiment of this invention. It is a flowchart for demonstrating the operation | movement which changes a filter setting value in the relay node 3 by this other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Network 2 Transmission side host 3, 4 Relay node 5 Reception side host 12 Input side port 13 Output side port 14 Branch part 15 Analysis part 16 Setting part 25 Extraction part 26 Setting part

Claims (10)

A network composed of one or more relay nodes inserted in a transmission path between a sending host, a receiving host, and the sending host and the receiving host,
The relay node is
An input means for inputting a frame;
Frame branching means for determining whether or not the input frame is a setting frame;
When it is determined by the frame branching means that the frame is a setting frame, setting information extracting means for extracting setting information from the frame;
Setting means for setting a control parameter based on the setting information extracted by the setting information extracting means;
With
The frame branching means includes
If the input frame is a setting frame and the destination address of the frame is broadcast or multicast, the input frame is transferred to the setting information extracting means and input to the output means for outputting the frame to the subsequent stage. When the input frame is a setting frame and the destination address of the frame is unicast, the input frame is input without transferring the copy of the frame. The network is transferred to the setting information extracting means.   The network according to claim 1, wherein the setting information is a filter setting value of the relay node.   The network according to claim 1, wherein the setting information is a command for the relay node. One or more relay nodes inserted in a network transmitting frames from a sending host to a receiving host,
An input means for inputting a frame;
Frame branching means for determining whether or not the input frame is a setting frame;
When it is determined by the frame branching means that the frame is a setting frame, setting information extracting means for extracting setting information from the frame;
Setting means for setting a control parameter based on the setting information extracted by the setting information extracting means,
The frame branching means includes
If the input frame is a setting frame and the destination address of the frame is broadcast or multicast, the input frame is transferred to the setting information extracting means and input to the output means for outputting the frame to the subsequent stage. When the input frame is a setting frame and the destination address of the frame is unicast, the input frame is input without transferring the copy of the frame. A relay node, wherein the relayed frame is transferred to the setting information extracting means. The setting information is a filter setting value,
The relay node according to claim 4, wherein the setting unit sets the filter setting value. The setting information is a command,
The relay node according to claim 4, wherein the setting unit sets the command. A control parameter setting method for one or more relay nodes inserted in a network that transmits a frame from a sending host to a receiving host,
A step of destination address from the sending host inputs broadcast, multicast, or the frame is a unicast,
Determining whether the input frame is a setting frame; and
If the input frame is a setting frame and the destination address of the frame is broadcast or multicast, the setting information is extracted from the frame and the input frame is transferred to the subsequent stage, while the input frame is set. If the frame and the destination address of the frame is unicast, extracting the setting information from the frame without transferring the frame to the subsequent stage; and
A control parameter setting method comprising: setting a control parameter of the relay node based on the extracted setting information.   The control parameter setting method according to claim 7, wherein the setting information is a filter setting value of a relay node.   8. The control parameter setting method according to claim 7, wherein the setting information is a command for a relay node. To one or more relay node computers inserted in the network transmitting frames from the sending host to the receiving host,
Entering a frame;
Determining whether the input frame is a setting frame; and
When the input frame is a setting frame, determining whether the destination address of the input frame is unicast; and
When the input frame is a setting frame and the destination address of the frame is not unicast, the input frame is transferred to the subsequent stage, and the setting information is extracted from the frame;
If the input frame is a setting frame and the destination address of the frame is unicast, the step of extracting setting information from the frame without transferring the input frame to the subsequent stage;
And a step of setting a control parameter of the relay node based on the extracted setting information.

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