JPH11175453A - Dynamic switching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To output high-speed data and also to perform transfer of a conventional device by dividing data to n receiving port controlling parts and sending the data to connection destination port controlling parts at the time of receiving the high-speed data that increases an internal transfer speed by n times. SOLUTION: High-speed data 3 which doubles an internal transfer speed and is received by a port distributed controlling part 100 is divided into two port controlling parts 10 and 11. The parts 10 and 11 respectively request a switch controlling part 20 for connection. The part 20 gives connection permission and performs connection inside a switch 21 when corresponding port controlling parts 12 and 13 which are connection destinations are in a connectable state. When connection is allowed, the parts 10 and 11 start data transfer to the parts 12 and 13 respectively. When the parts 12 and 13 receive the data, they transfer the data to an I/O 40 of a CU 30 to which it is connected and an I/O 50 of a CU 31 to which it is connected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a dynamic switching device connected to a channel and an input / output device.

[0002]

2. Description of the Related Art A system using a dynamic switching device can be connected to a plurality of input / output devices from one channel, and can access one input / output device from a plurality of channels. Among these systems, there is a dynamic switching device as a device for realizing high-speed switching of an optical signal between a channel and an input / output device. For communication between the channel and the input / output device, data transfer at a maximum of 17 MB / s per port is possible. When a dynamic switching device is interposed between a channel and an input / output device, the port to which the channel is connected and the port to which the input / output device is connected are not freely connected. The connection relationship between the channel connection port and the input / output device connection port is specified. When accessing the input / output device, the channel specifies the number of the input / output device connection port and starts the dynamic switching device. The dynamic switching device is specified. Perform dynamic connection between ports according to the port numbers set.

FIG. 6 is a connection diagram of a conventional dynamic switching device. It is connected to each port of the dynamic switching device from a plurality of channels by optical fibers, and is capable of transferring data at 17 MB / s. The data transfer between the channel connected by the dynamic switching device and the input / output device will be described with reference to FIG. 6. When the port control unit 10 receives 10-bit optical serial data from CH1, the port performs optical / electrical conversion, and performs Synchronize, convert from 10 bits to 8 bits and check transfer characters. If the data is a connection request data, the port control unit 10 issues a connection request to the switch control unit 20. The switch control unit 20 checks the state of the connection destination port control unit 12, and if the connection is possible, the port control unit of the switch 21. 10 and the port control unit 12 are connected, and a data transfer instruction is issued to the port control unit 10. When receiving the data transfer instruction, the port control unit 10 transfers the data to the switch 21 (at this time, the data transfer speed inside the switch 21 is 200 Mbps) and thereafter sends the data to the connection destination port control unit 12 until the data of the disconnection request comes. to continue. The connection destination port control unit 12 transfers the data sent from the port control unit 10 to the CU 30. While the system is operating, the dynamic switching device is connected to other active ports, for example, the CH1 and the I of the CU 30.
The device (CU31) connected to the port control unit 13 can be exchanged without affecting the port control unit 10 and the port control unit 12 during data transfer between the / O 40 and the system has high availability. And guarantee the integrity.

However, in the future, a dynamic switching device for high-speed data transfer in a system configuration using a channel such as a fiber channel capable of high-speed data transfer and an input / output device will be required.
In addition, it was necessary to consider a dynamic switching device for high-speed data transfer.

[0005]

However, considering a dynamic switching device that can be connected to a conventional device and that can perform high-speed data transfer, the data transfer speed between ports in the dynamic switching device is such that the conventional device transfers at a conventional speed. When connected to a device capable of high-speed data transfer, it is necessary to increase the transfer speed. In FIG. 6, conventionally, data from the CH is transferred at 200 Mbps inside the dynamic switching device in order to transfer the data to the partner port. However, if the transfer speed of the data bus is increased to enable high-speed transfer, the conventional transfer speed is increased. When supporting the channels and peripheral devices, it is necessary to reduce the performance by the port control unit, which is cost-effective. Also, in conventional dynamic switching devices, it is not considered to easily increase the internal data transfer rate,
It is difficult to provide a dynamic switching function that can support both a high-speed transfer device and a conventional device without changing the internal transfer speed.

SUMMARY OF THE INVENTION It is an object of the present invention to add a port distribution control unit and a port integrated control unit without changing the data transfer speed between the port control units and the switching control of the conventional dynamic switching device.
A function of distributing data to n reception port control units when n times high-speed data is received (n is an integer of 2 or more) and a port integration control unit for integrating data of n connection destination port control units An object of the present invention is to provide a device which can output n-times high-speed data and can also transfer data to a conventional device.

[0007]

In order to solve the above problem, a dynamic switching device according to the present invention dynamically connects a plurality of port controllers and the port controllers to each other. And a switch control unit for controlling connection / disconnection of the switch in response to a connection / disconnection request from the port control unit, the internal transfer rate n
When receiving twice the high-speed data (data to be transferred bit-serial without changing the format of the conventional frame at n times the transfer speed of the conventional data), the data is distributed to the n reception port control units, and the connection destination By providing a port distribution control unit that can transmit data to the port control unit and a port integration control unit that integrates data of the n connection destination port control units, n-times high-speed data can be output.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. Also, n of the internal transfer speed n times is
Description will be made on the assumption that n = 2.

FIG. 5 is a block diagram showing an embodiment of the present invention. According to the logic of the prior art (FIG. 6), when high-speed data of n times the internal transfer rate is received, n reception port control units are used. Port distribution control for distributing data is added. FIG. 2 is a configuration diagram of a port distribution control unit according to the present invention.

In FIG. 2, high-speed data 3 which is twice the internal transfer rate is checked by the port distribution control 200, data is written in the buffers 5 and 6 of the port distribution control unit 100, and the port control unit 10 and the port control unit are checked. 11 to transfer the data. Thereafter, the port control unit 10 and the port control unit 11 perform the conventional operation. High-speed data 3 that is twice the internal transfer rate sent from CH1 in FIG. 5 is received by port distribution control unit 100 and distributed to two port control units 10 and 11. Each of the port control unit 10 and the port control unit 11 receiving the data requests the switch control unit 20 to connect. If the corresponding connection destination port control unit 12 and port control unit 13 are in a connectable state, the switch control unit 20 performs connection permission and connection inside the switch 21. When the connection is permitted, the port control unit 10 and the port control unit 11 start transferring data to the connection destination port control unit 12 and the port control unit 13, respectively. Upon receiving the data, the connection destination port control unit 12 and the port control unit 13 receive the I / O 40 of the CU 30 and the I / O 40 of the CU 31 to be connected.
The data is transferred to O50.

FIG. 5 describes the data transfer procedure from the CH to the I / O.
Data transfer to is performed in reverse order.

FIG. 4 is a block diagram showing an embodiment of the present invention. The logic of the prior art (FIG. 6) integrates data of n destination port control units and performs port integration for high-speed data transfer. Control is added. FIG. 3 is a configuration diagram of a port integration control unit according to the present invention.

In FIG. 3, data transmitted from the two connection destination port control units 12 and 13 are written into the buffers 7 and 8 of the port control unit 101 by the write port integration control 201 and integrated. The high-speed data 4 that is twice the transfer speed is transferred. The data transmitted from CH1 in FIG. 4 is received by the port control unit 10 and requests connection to the switch control unit 20. Switch control unit 2
0 indicates that connection is permitted and connection inside the switch 21 is performed if the connection port control unit 12 is in a connectable state. When the connection is permitted, the port control unit 10 starts transferring data to the connection destination port control unit 12. Similarly, data sent from CH2 is received by the port control unit 11 and requests connection to the switch control unit 20. When the connection destination port control unit 13 is in a connectable state, the switch control unit 20 performs connection permission and connection inside the switch 21. When the connection is permitted, the port control unit 11 starts transferring data to the connection destination port control unit 13. The data received by the connection destination port control unit 12 and the port control unit 13 are integrated by the port integration control unit 101, and the high-speed data 4 twice the internal transfer speed is transferred to the I / O 40 of the CU 30.

FIG. 4 shows the data transfer procedure from the CH to the I / O.
Data transfer to is performed in reverse order.

FIG. 1 is a block diagram showing an embodiment of the present invention. According to the logic of the prior art (FIG. 6), when receiving high-speed data of n times the internal transfer rate, control of n reception ports is performed. The internal transfer rate transmitted from CH1 in FIG. 1 is added to the port distribution control for distributing data to the ports and the port integration control for integrating the data of the n connection destination port control sections and performing high-speed data transfer. The double high-speed data 3 is received by the port distribution control unit 100 and is distributed to two port control units 10 and 11. Each of the port control unit 10 and the port control unit 11 receiving the data requests the switch control unit 20 to connect. If the corresponding connection destination port control unit 12 and port control unit 13 can be connected, the switch control unit 20 sets the connection permission and the switch 21
Make internal connections. Port control unit 1 when connection is permitted
0 and the port control unit 11 start data transfer to the connection destination port control unit 12 and the port control unit 13, respectively.

The connection destination port control unit 12 and the port control unit 1
The data received at 3 is integrated by the port integration control unit 101, and the high-speed data 4 twice the internal transfer rate is transferred to the CU.
The data is transferred to the 30 I / Os 40.

[0017]

According to the present invention, switching independent of the data transfer speed between dynamic switching device ports and between channels and between dynamic switching device ports and peripheral devices in a system configuration in which high-speed channels and conventional channels coexist. A dynamic switching device having a function can be obtained, and a system that can easily cope with future high-speed operation can be configured.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a dynamic switching device using the present invention.

FIG. 2 is a configuration diagram of a port integrated control unit of a dynamic switching device using the present invention.

FIG. 3 is a configuration diagram of a port distribution control unit of a dynamic switching device using the present invention.

FIG. 4 is a configuration diagram of a dynamic switching device using the present invention.

FIG. 5 is a configuration diagram of a dynamic switching device using the present invention.

FIG. 6 is a configuration diagram of a dynamic switching device using a conventional technique.

[Explanation of symbols]

 ········· CH 3,4 ···· High-speed data twice the internal transfer rate 5,6,7,8 ····· Buffer 10,11,12,13 ···・ Port control unit 20 ・ ・ ・ ・ ・ Switch control unit 21 ・ ・ ・ ・ ・ ・ ・ Switch 30,31 ・ ・ ・ ・ ・ ・ ・ CU 40,41,50,51 ・ ・ ・ ・ ・ ・ ・ I / O 100 ・ ・ ・ ・Port distributed control unit 101 Port integrated control unit 200 Port distributed control 201 Port integrated control

Claims (2)

[Claims] A switch for dynamically connecting a plurality of port controllers, a switch for dynamically connecting each port controller, and a switch controller for controlling connection / disconnection of the switch in response to a connection / disconnection request from the port controller. And a port distribution control unit that, when receiving high-speed data of n times the internal transfer rate, distributes the data to n reception port control units and transmits the data to the connection destination port control unit. A dynamic switching device characterized by the above. 2. A plurality of port controllers, a switch for dynamically connecting between the port controllers, and a switch controller for controlling connection / disconnection of the switch in response to a connection / disconnection request from the port controller. The dynamic switching device comprising: a port integration control unit that integrates data of n connection destination port control units.