JPH0795228A - Regenerative repeater - Google Patents

Abstract

PURPOSE:To always recognize a receiving port without any error. CONSTITUTION:A regenerative repeating part 1 regeneratively repeats a frame to twisted pair wire interfaces 8a-8d, a communication control part 2, a repeating frame detecting part 3, and a transmission origin address storage part 4. The repeating frame detecting part 3 transmits a detection signal 12 to a transmission origin address storage part 4 and a receiving port storage part 5. The transmission origin address detecting part 4 stores the transmission origin address of the repeating frame synchronously with the detection signal 12. Similarly, the receiving port storage part 5 stores receiving port information from the regenerative repeating part 1 synchronously with the detection signal 12. A microcomputer 7 can find the address of a terminal connected with the stranded wire interfaces by obtaining those synchronously stored transmission origin address and receiving port information. Thus, the information of the transmission origin address and the receiving port can be obtained synchronously with the same signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a regenerative repeater for regenerating and relaying frames from a plurality of signal input / output ports according to the IEEE802.3 standard or a similar communication control system.

[0002]

2. Description of the Related Art Local Area Network (LAN)
Configuration management is one of the important management items in network management. IEEE802.3 10BASE-T
In a LAN compliant with the standard, a regenerative repeater (multiport HUB) that regenerates and relays signals from a plurality of twisted wires automatically detects the source address of the frame received by each port for each port. It is possible to obtain the configuration information. Therefore, multi-port HUB (intelligent HU with network management function)
B) often has an automatic acquisition function of configuration information.

Intelligent HUB equipped with this function
The configuration of is shown in FIG. The communication control unit 2 of the HUB receives the frame relayed by the reproduction relay unit 1 and writes the content of the received frame in the memory 6. The reception port detection unit 14 detects the port (8a to 8d) that has received the frame according to the reception port information from the reproduction relay unit 1 and notifies the microcomputer (hereinafter, referred to as a microcomputer) 7 of the detected port. In this way, the source address of the received frame and the information of the receiving port are acquired independently. The microcomputer 7 can recognize the network configuration based on the information on the receiving port and the information on the source address of the received frame written in the memory.

The communication control unit 2 uses the same LSI as the communication control unit used for a personal computer.
In SI, in order to reduce the processing of the microcomputer, data is directly read and written in the memory when transmitting and receiving a frame.

[0005]

However, the above-mentioned prior art has the following problems. That is, since the information of the source address of the received frame and the information of the receiving port are acquired independently, if the correspondence between the two information is deviated due to a frame receiving error or the like, the receiving port will erroneously recognize. Furthermore, once correspondence is lost, it cannot be recovered,
It is also a serious problem that it is difficult to recover from false recognition.

An object of the present invention is to solve the above-mentioned drawbacks of the prior art and to provide a regenerative repeater which always recognizes a receiving port without error.

[0007]

According to the present invention, in a regenerative repeater device having a regenerative repeating unit for regenerating and relaying frames from a plurality of signal input / output ports, a relay frame detecting unit for detecting a relay frame from the relay unit. And a source address storage unit that stores the source address of the relay frame according to the detection signal from the relay frame detection unit, and a reception port storage unit that stores information that specifies the signal input / output port that has received the relay frame according to the detection signal. It is equipped with and.

In this case, a network management function is further provided, a part or all of the signal input / output ports are IEEE802.3 10BASE-T standard or a similar twisted pair interface, or a MAC address or a source address is used. It is preferable to store the IP address.

[0009]

When the relay frame detecting section for detecting the relay frame is provided and the source address of the frame and the information for specifying the signal input / output port which has received the frame are stored according to the detection signal, the source address of the source address can be stored. The information and the information of the receiving port can be acquired in synchronization with each other, and there is no misalignment between the information.

Therefore, as in the case where the source address of the received frame and the information of the receiving port are acquired independently,
There is no chance that the correspondence between the two pieces of information will be misaligned due to a frame reception error or the like, resulting in erroneous recognition of the receiving port.

[0011]

EXAMPLE An example of the present invention will be described below with reference to FIG. FIG. 1 shows a regenerative repeater according to an embodiment of the present invention. This is a four-port regenerative repeater that regenerates and relays frames from four signal input / output ports according to the IEEE802.3 standard or a similar communication control method.

The present apparatus comprises a reproduction relay unit 1 having a function of notifying the reception port information to the outside, a communication control unit 2 connecting the reproduction relay unit 1 and a central processing unit (a memory and a microcomputer described later), and a reproduction relay unit. A relay frame detection unit 3 for detecting a relay frame from the received data 10 of the unit 1 is provided.

Further, according to the detection signal 12 from the relay frame detector, M is set as the source address of the relay frame.
A source address storage unit 4 that stores an AC address and a reception port storage unit 5 that stores information that specifies a signal input / output port that has received a relay frame from the reception port signal 13 according to the same detection signal 12 are provided. And the memory 6,
The microcomputer 7 and the twisted pair interfaces 8a to 8d and the like that configure the port are provided.

The present apparatus also has a network management function capable of automatically detecting the source address of the frame received by each port for each port and automatically obtaining the configuration information.

The source address storage unit 4 and the reception port storage unit 5 are each configured to store information for one frame. In addition, all of the twisted pair interfaces 8a to 8d are IEEE802.3 10BASE.
-T standard, and these are connected to the reproduction relay section 1 by input / output signal lines 9a to 9d. Reference numeral 11 is a transmission data signal.

In the present embodiment, the information of the source address and the information of the receiving port are obtained according to the same detection signal. However, the frame of the source address "133" is transmitted from the twisted pair interface 8b. Let's take the operation when it arrives as an example.

The regenerative repeater 1 replays and relays a frame to the twisted pair interfaces 8a to 8d, the communication controller 2, the relay frame detector 3, and the source address memory 4.
The relay frame detection unit 3 sends the detection signal 12 to the source address storage unit 4 and the reception port storage unit 5. The source address detection unit 4 stores the source address “133” of the relay frame in synchronization with the detection signal 12.

Similarly, the reception port storage unit 5 synchronizes with the detection signal 12 and receives the reception port information 8 from the regeneration relay unit 1.
Remember b. The microcomputer 7 can know that the address of the terminal connected to the twisted pair interface 8b is "133" by acquiring the information of the source address and the receiving port stored in synchronization with each other.

As described above, since the information of the source address and the information of the receiving port are acquired in synchronization with the same signal, it is possible to effectively avoid the erroneous recognition of the receiving port due to the misalignment of the two information. Trouble caused by it can be eliminated.

In the above embodiment, the source address storage unit 4 and the reception port storage unit 5 are each configured to store one frame of information.
A configuration in which a memory is provided to store information for a plurality of frames may be adopted.

Further, in the above embodiment, the source address storage section and the reception port storage section are realized by separate blocks.
The functions expressed by the separate blocks may be integrated and realized as one block. Furthermore, the number of twisted pair interfaces is not limited to four, and any number may be used.

FIG. 2 shows another embodiment of the present invention. The difference from the above embodiment is that the regeneration relay unit 1 does not have the function of notifying the information of the receiving port to the outside. Therefore,
In order to directly provide the reception port information from the twisted pair interfaces 8a to 8d to the reception port storage unit 5, the input / output lines 9a to 9d of the twisted pair interfaces 8a to 8d connected to the regeneration relay unit 1 are set to the reception ports. 5 is also connected. As a result, even when the regeneration relay unit 1 does not have the function of notifying the reception port information to the outside, the reception port storage unit 5 causes the twisted pair interfaces 8a to 8d.
The information of the receiving port can be obtained directly from, and this receiving port information is stored in synchronization with the source address.
The same effect as that of the above-described embodiment can be obtained.

[0023]

According to the present invention, since the sender address is acquired synchronously with the information of the receiving port, unlike the conventional one which is acquired asynchronously, it is possible to acquire error-free configuration information. It will be possible.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a regenerative repeater of the present invention.

FIG. 2 is a block diagram showing another embodiment of the regeneration repeater of the present invention.

FIG. 3 is a block diagram showing a regenerative repeater according to a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 reproduction relay section 2 communication control section 3 relay frame detection section 4 source address storage section 5 reception port storage section 6 memory 7 microcomputer 8a-8d twisted pair interface 9a-9d input / output signal line 10 received data 11 transmission data 12 relay Frame detection signal 13 Reception port signal

Claims (4)

[Claims] 1. A regenerative repeater device having a regenerative repeater unit for regenerating and repeating frames from a plurality of signal input / output ports, a relay frame detecting unit for detecting a relay frame from the regenerating relay unit, and the relay frame detecting unit. A source address storage unit that stores a source address of the relay frame according to the detection signal from the receiver, and a reception port storage unit that stores information that identifies a signal input / output port that has received the relay frame according to the detection signal. A regenerative repeater characterized by the above. 2. The regeneration repeater according to claim 1,
A replay repeater having a network management function for obtaining network configuration information by detecting the source address for each of the signal input / output ports. 3. The regeneration repeater according to claim 1, wherein a part or all of the signal input / output port is IEEE.
E802.3 10BASE-T standard or similar twisted pair interface, regenerative repeater. 4. A reproduction relay device according to claim 1, wherein a MAC address or an IP address is stored as the source address.