JP2790171B2 - Data transfer method in HIPPI network - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a unidirectional channel standard (ANSI X3.183-1991) HIP.
PI (High Performance Parallel)
In particular, the present invention relates to a data transfer method in a HIPPI network in which computers are connected by HIPPI.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
When the data transmission program 51 requests data transmission between the computers 50 and 60 connected by 0, the network management unit 52 causes the packet creation means 53 to add the destination address, data type, data length, etc. A packet is created by adding a fixed-length header storing a header information of a fixed length and a fixed-length check portion including a checksum to the end to generate a packet.
The packet has been transmitted to the computer 60 via 70. Note that HIPPI does not specify the maximum length of transfer data, and any length of transfer data can be transferred as one packet.

In a receiving computer 60, a network management unit 61 receives a packet by a packet receiving unit 62, performs a header disassembly process by a packet disassembly unit 63, and performs header disassembly such as a destination address, a data type, and a data length. The information is extracted, the transfer data is further extracted according to the data length, and the extracted transfer data is passed to the data receiving program 64.

[0004]

The conventional HIP described above.
In the data transfer method in the PI network, when the transfer data of a large data length is transmitted between the computers, the receiving computer cannot perform the header disassembly processing until the entire packet has been received. There has been a problem that a great deal of time is required until the processing is performed and the responsiveness of the computer is reduced. For example, since the transfer performance of HIPPI is 800 Mbps, a line is occupied for about one second when transferring 100 Mbytes of data.

In view of the above, it is an object of the present invention to transfer a header packet and a data packet via different HIPPIs when a data transmission program specifies that transfer data is response-oriented data. Another object of the present invention is to provide a data transfer method in a HIPPI network in which the resolution of a header packet can be performed during the transfer of a data packet so that the responsiveness of a computer does not deteriorate.

Another object of the present invention is to transfer a header packet and a data packet via separate HIPPIs when the transfer data is data of a certain length or more, and to transfer the header packet during transfer of the data packet. It is an object of the present invention to provide a data transfer method in a HIPPI network in which the resolution of a computer can be reduced so that the responsiveness of a computer does not decrease.

Further, another object of the present invention is to provide a header packet and a data packet when the data transmission program specifies that the transfer data is data with a priority on response and when the transfer data is data having a certain length or more. Is provided via a separate HIPPI, so that a header packet can be decomposed during the transfer of a data packet, so that the responsiveness of the computer does not deteriorate. It is in.

As a conventional technique, in a packet switch, a header portion and a data portion are unconditionally decomposed and transferred using two lines (Japanese Patent Laid-Open No. 2-4).
No. 072) is known, but this method is based on HI
Unlike PPI, this is in a packet switch in which the maximum length of transfer data is specified. In addition, even in the case of data transfer with a small data length that does not affect the transfer time or data transfer that does not need to worry about the transfer time, the header part and the data part are uniformly divided, so the When employed for data transfer, the transfer time may be rather lengthened.

[0009]

According to the present invention, there is provided a data transfer system in a HIPPI network in a HIPPI network in which computers are connected by a HIPPI. And a data transfer means for transmitting a data packet and a normal packet, and a data transfer means for transmitting a data packet and a normal packet, wherein a network management unit on the transmission side determines whether the transfer data is response-oriented data or not. Header packet creating means for creating a header packet including data packet identification information in the header when the transfer data is identified as response-oriented data by the means;
A data packet creation unit for creating a data packet corresponding to the header packet created by the header packet creation unit and including the data packet identification information in the header; and identifying that the transfer data is not response-oriented data by the data identification unit. A normal packet generating means for generating a normal packet when the packet is transmitted, a header packet transmitting means for transmitting the header packet via the HIPPI for the header transfer, and a HIPPI for transmitting the data packet and the normal packet to the data transfer. Packet transmitting means for transmitting the header packet via the HIPPI for the header transfer, and a header packet receiving means for receiving the header packet transmitted via the HIPPI for header transfer. Header packet received by Header packet decomposing means for decomposing packets, packet receiving means for receiving data packets and normal packets transmitted via the data transfer HIPPI, and determining whether packets received by the packet receiving means are data packets. Packet identification means for identifying a normal packet; data packet collation means for collating the data packet identified by the packet identification means based on data packet identification information of the header packet decomposed by the header packet decomposition means;
It has a data packet decomposing means for decomposing the data packet collated by the data packet collating means, and a normal packet decomposing means for decomposing the normal packet identified by the packet identification means.

Further, the data transfer method in the HIPPI network of the present invention uses
In a data transfer method in a HIPPI network connected by a network, a HIPPI for header transfer for transmitting a header packet between computers and a HIPP for data transfer for transmitting a data packet and a normal packet are provided.
I, and the network management unit on the transmitting side determines whether the transfer data is data of a certain length or more, and determines that the transfer data is data of a certain length or more by this data identification means. Header packet creation means for creating a header packet including data packet identification information in the header when identified, and data corresponding to the header packet created by the header packet creation means and including the data packet identification information in the header A data packet creating means for creating a packet, a normal packet creating means for creating a normal packet when the transfer data is identified as not being data having a certain length or more, and the header packet for the header transfer. Means for transmitting a header packet through HIPPI, Packet transmission means for transmitting the normal packet and the normal packet via the data transfer HIPPI, wherein the receiving side network management unit receives the header packet transmitted via the header transfer HIPPI. Header packet receiving means, header packet decomposing means for decomposing header packets received by the header packet receiving means, and packet reception for receiving data packets and normal packets transmitted via the data transfer HIPPI. Means,
A packet identification unit that identifies whether the packet received by the packet reception unit is a data packet or a normal packet; and a packet identification unit that identifies the packet based on the data packet identification information of the header packet decomposed by the header packet decomposition unit. Data packet collating means for collating the identified data packet, data packet decomposing means for decomposing the data packet collated by the data packet collating means, and normal packet decomposing means for decomposing the normal packet identified by the packet identifying means And

Further, the data transfer method in the HIPI network according to the present invention uses a
In a data transfer method in a HIPPI network connected by I, a HIPPI for header transfer for transmitting a header packet between computers and a HIPPI for data transfer for transmitting a data packet and a normal packet
A connection is made with the PI, and a network management unit on the transmitting side identifies whether the transfer data is response-oriented data and whether the transfer data is data of a certain length or more. A header packet creating means for creating a header packet including data packet identification information in the header when the header packet is identified as data that emphasizes response or data of a certain length or more; corresponding to the header and data packets creation means for creating a data packet including the data packet identification information in a header, the data transfer data by the identification means of the above KuKatsu predetermined length such in the data emphasis response
Wherein a normal packet creation unit, and a header packet transmission means for transmitting the header packet through the HIPPI for the header forwarding, the data packet and the normal packet to create a normal packet if the Most identified Do data Packet transmission means for transmitting data via HIPPI for data transfer, wherein the network management unit on the receiving side receives header packets transmitted via the HIPPI for header transfer; Header packet decomposing means for decomposing the header packet received by the header packet receiving means;
Packet receiving means for receiving a data packet and a normal packet transmitted via the data transfer HIPPI; packet identification means for identifying whether the packet received by the packet receiving means is a data packet or a normal packet; A data packet matching unit for matching the data packet identified by the packet identification unit based on the data packet identification information of the header packet decomposed by the header packet disassembly unit; and a data packet collated by the data packet matching unit. And a normal packet decomposing means for decomposing the normal packet identified by the packet identification means.

[0012]

Next, the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a HIPP according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating a configuration of a data transfer method in an I network. In the data transfer method in the HIPPI network of the present embodiment, a computer 10 and a computer 20 are connected by a HIPPI 30 for header transfer and a HIPPI 40 for data transfer, and a main part thereof is configured.

The computer 10 includes a data transmission program 11 for transmitting data, and a network management unit 12.

The network management unit 12 includes a data identification unit 13 for identifying whether the transfer data is response-oriented data and whether the transfer data is data of a certain length or more.
Header packet creating means 14 for creating a header packet
A data packet generator 15 for generating a packet having transfer data corresponding to the header packet (hereinafter referred to as a data packet); a header packet transmitter 16 for transmitting the header packet; It comprises a normal packet creating means 17 for creating a packet (hereinafter referred to as a normal packet), and a packet transmitting means 18 for transmitting a header packet and a normal packet.

The computer 20 includes a network management unit 21 and a data receiving program 29 for receiving data.

The network management unit 21 includes a header packet receiving means 22 for receiving a header packet, a packet receiving means 23 for receiving a data packet and a normal packet, a header packet decomposing means 24 for decomposing a header packet, Packet identification means 25 for identifying whether the packet is a data packet or a normal packet, data packet collation means 26 for collating a corresponding data packet based on the data packet identification information of the decomposed header packet, and data for decomposing the received data packet It is configured to include a packet decomposing means 27 and a normal packet decomposing means 28 for decomposing a normal packet.

Referring to FIG. 2A, the header packet is composed of a fixed length header and a fixed length check unit. The header includes a transfer destination address, a data type, a data length, and data packet identification information. And the like, and the check section stores a checksum.
The data packet identification information is configured by, for example, adding the sequential number of the transfer data to the process number of the data transmission program 11 (hereinafter, “+” indicates addition).

Referring to FIG. 2B, a data packet is composed of a fixed-length header, transfer data of an undefined length, and a fixed-length check unit. The header includes a transfer destination address, data type, and data. Header information such as length and data packet identification information is stored, and a check section stores a checksum. As the data packet identification information, the same data packet identification information as the corresponding header packet is stored. The normal packet has the same configuration as the data packet. However, in the case of the normal packet, since there is no corresponding header packet, the data packet identification information is set to an initial value (for example, 0). I have.

Referring to FIG. 3, the processing of the network management unit 12 on the transmission side includes a transfer data response emphasis identification step S101, a transfer data identification step S102 or more, a normal packet creation step S103, and a header packet creation step. It comprises S104, a data packet creation step S105, a header packet transmission step S106, and a packet transmission step S107.

Referring to FIG. 4, the processing of the network management unit 21 on the receiving side includes a header packet receiving step S2.
01, a packet receiving step S202, a header packet disassembling step S203, a data packet determining step S204, and a data packet collating step S205.
And a data packet disassembly step S206 and a normal packet disassembly step S207.

Next, the H of the present embodiment thus constructed is
The operation of the data transfer method in the IPPI network will be described.

When the data transmission program 11 of the computer 10 transmits the transfer data to the data reception program 29 of the computer 20, the data transmission program 11 manages the transfer data along with the destination address, data type, data length, etc. in the network management. The data is passed to the section 12 to request data transmission. At this time, if the transfer data is data that emphasizes the response, the data transmission program 11
Notifies the network management unit 12 that the transfer data emphasizes the response.

In the network management unit 12, first, the data identification means 13 identifies whether or not the transfer data is response-oriented data (step S101). Hand over to 14. If the transfer data is not data that emphasizes the response, the data identification unit 13 further determines whether the data has a data length that does not affect the transfer time even if it is transmitted in a normal packet based on whether the transfer data is data having a certain length or more. It is determined whether or not it is (step S102). If the transfer data is data of a certain length or more, the data identification means 13 passes the transfer data to the header packet creation means 14, and if the transfer data is less than the certain length, passes the transfer data to the normal packet creation means 17.

The normal packet creating means 17 comprises a header for storing header information such as a destination address, a data type, a data length and data packet identification information (initial value) at the beginning of the transfer data, and a checksum at the end. A normal packet is created by adding a check unit (step S
103), and passes the packet to the packet transmitting means 18.

The packet transmitting means 18 transmits the passed normal packet to the computer 20 via the data transfer HIPPI 40 (step S107).

On the other hand, the header packet creating means 14 to which the transfer data has been passed, checksums the header consisting of the transfer destination address, data type, data length and data packet identification information (process number + sequential transfer data number). The header packet is created by adding a check unit (step S104), and the created header packet is transferred to the header packet transmitting unit 16 and the transfer data is transferred to the data packet generating unit 15.

The header packet transmitting means 16 transmits the passed header packet to the computer 20 via the response-oriented HIPPI 30 (step S10).
6).

The data packet creating means 15 receiving the transfer data from the header packet creating means 14 adds the transfer destination address, data type, data length and data packet identification information (process number + sequential transfer data number) to the beginning of the transfer data. A data packet is created by adding a header storing header information such as a check sum, which is a check sum, at the end (step S103), and is passed to the packet transmitting means 18.

The packet transmitting means 18 transmits the passed data packet to the computer 20 indicated by the transfer destination address via the data transfer HIPPI 40 (step S107).

At the receiving computer 20, the HIPP
When a normal packet has been transmitted via I40, the packet receiving means 23 receives the normal packet (step S202), and passes the received normal packet to the packet identification means 25.

The packet identification means 25 identifies whether the packet is a normal packet or a data packet based on whether the data packet identification information in the header is an initial value (step S204). The packet is passed to the packet decomposing means 28, and if it is a data packet, it is passed to the data packet collating means 26.

The normal packet decomposing means 28 decomposes the header of the passed normal packet to extract header information such as the destination address, data type, and data length, and further extracts the transfer data according to the data length (step S20).
7) The extracted transfer data is transferred to the data receiving program 29 at the transfer destination address together with the data type.

On the other hand, the header packet receiving means 22 receives the header packet while the data packet is being transferred (step S201), and passes the received header packet to the header packet decomposing means 24.

The header packet decomposing means 24 decomposes the passed header packet into header information such as a transfer destination address, a data type, a data length, and data packet identification information (step S203). Pass to.

When the reception of the data packet is completed,
Since the packet receiving means 23 passes the data packet to the packet identifying means 25 and the packet identifying means 25 passes the data packet to the data packet collating means 26, the data packet collating means 26 has already been passed from the header packet decomposing means 24. The data packet identification information in the header information is compared with the data packet search information in the data packet, and a data packet having the same data packet search information is received (step S205). hand over.

The data packet decomposing means 27 extracts the transfer data from the data packet according to the data length in the header information, and transfers the extracted transfer data together with the data type in the header information to the data receiving program 29 of the transfer destination address (step S206). ). It should be noted that the processing in the data packet decomposing means 27 can be performed in a shorter time than the processing in the normal packet decomposing means 28 because there is no header information extraction processing by decomposing the header.

In the above embodiment, the computer 1
0, HIPPI3 for header transfer between computers 20
0 and the connection by the data transfer HIPPI 40 has been described as an example, but the HIPPI for the header transfer and the HIPPI for the data transfer between three or more computers are described.
It is clear that the invention is equally applicable in the case of HIPPI networks connected together by PI.

For transfer data that emphasizes the response and transfer data having a large data length that affects the transfer time, the data packet is transferred via the data packet transfer HIPPI, and the header packet is transferred to the header transfer HIPPI. Was transferred via
Data packets may be transferred via HIPPI for data packet transfer only for transfer data emphasizing response, and header packets may be transferred via HIPPI for header transfer, or the transfer time may be affected. The data packet is transferred via the HIPPI for data packet transfer only for transfer data having a very large data length, and the header packet is transferred to the HIPPI for header transfer.
It goes without saying that the present invention can be similarly realized even if the transfer is performed via the PI.

[0040]

As described above, according to the present invention, the HIPPI for header transfer and the H for data transfer are used between computers.
A connection is established with the IPPI, and a network management unit on the transmission side is provided with a data identification unit, a header packet generation unit, a data packet generation unit, a normal packet generation unit, a header packet transmission unit, and a packet transmission unit. A header packet receiving means, a header packet decomposing means, a packet receiving means, a packet identifying means, a data packet collating means, a data packet decomposing means, and a normal packet decomposing means are provided. The header packet is transferred via the HIPPI for header transfer and the header packet is transferred via the HIPPI for header transfer, so that the header packet can be disassembled during the transfer of the data packet. Shorten the computer There is an effect that a reduction in the responsiveness of the motor can be prevented.

For transfer data having a large data length that affects the transfer time, a data packet is transferred via a data packet transfer HIPPI, and a header packet is transferred using a response-oriented HIPPI. As a result, the header packet can be disassembled during the transfer of the data packet, so that the transfer time can be shortened and the responsiveness of the computer can be prevented from lowering.

Further, for transfer data that emphasizes the response and transfer data having a large data length that affects the transfer time, the data packet is transferred via the HIPPI for data packet transfer, and the header packet is changed to the response-oriented. Since the transfer is performed via the HIPPI, the header packet can be decomposed during the transfer of the data packet. Therefore, the transfer time can be shortened and the deterioration of the responsiveness of the computer can be prevented. There is an effect that can be.

Note that transfer data having a small data length that does not affect the transfer time or transfer data that does not need to be concerned with the transfer time are transferred in a conventional normal packet, so that the transfer time is reduced. On the contrary, there is an advantage that a situation in which the length becomes longer does not occur.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a data transfer method in a HIPPI network according to one embodiment of the present invention.

FIGS. 2A and 2B show a data structure of a packet used in a data transfer method in a HIPPI network of the present embodiment, wherein FIG. 2A is a structural diagram of a header packet, and FIG. 2B is a structural diagram of a data packet and a normal packet.

FIG. 3 is a flowchart showing a process of a data management unit on a transmission side in FIG. 1;

FIG. 4 is a flowchart showing a process of a data management unit on the receiving side in FIG. 1;

FIG. 5 is a block diagram illustrating an example of a data transfer method in a conventional HIPPI network.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Computer 11 Data transmission program 12 Network management part 13 Data identification means 14 Header packet creation means 15 Data packet creation means 16 Header packet transmission means 17 Normal packet creation means 18 Packet transmission means 20 Computer 21 Network management part 22 Header packet reception means 23 Packet receiving means 24 Header packet decomposing means 25 Packet discriminating means 26 Data packet collating means 27 Data packet decomposing means 28 Normal packet decomposing means 29 Data receiving program 30 HIPPI for header transfer 40 HIPPI for data transfer

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04L 12/00-12/66 H04L 29/00

Claims (4)

(57) [Claims] 1. A data transfer method in a HIPPI network in which computers are connected by HIPPI, wherein a HIPPI for header transfer for transmitting a header packet between computers and a HIPPI for data transfer for transmitting a data packet and a normal packet are provided. The network management unit on the transmission side determines whether the transfer data is response-oriented data, and the data identification unit identifies the transfer data as response-oriented data. A header packet creating means for creating a header packet including the data packet identification information in the header, and creating a data packet including the data packet identification information in the header corresponding to the header packet created by the header packet creating means. Data A packet creating means, a normal packet generating means for transferring data by the data discrimination means to create a normal packet if it is not identified as a data oriented response, the header packet for the header transfer H
Means for transmitting a header packet via IPPI;
Packet transmitting means for transmitting the data packet and the normal packet via the data transfer HIPPI, and
Header packet receiving means for receiving a header packet transmitted via IPPI, header packet decomposing means for decomposing the header packet received by the header packet receiving means, and HIPPI for data transfer
Packet receiving means for receiving a data packet and a normal packet transmitted via the packet receiving means; a packet identifying means for identifying whether the packet received by the packet receiving means is a data packet or a normal packet; A data packet collating means for collating the data packet identified by the packet identifying means based on the data packet identification information of the decomposed header packet; and a data packet decomposing means for decomposing the data packet collated by the data packet collating means. And a normal packet decomposing means for decomposing the normal packet identified by the packet identification means. 2. A data transfer method in a HIPPI network in which computers are connected by HIPPI, wherein a HIPPI for transmitting a header packet between computers and a HIPPI for transmitting a data packet and a normal packet are transmitted. The network management unit on the transmission side identifies the transfer data as data having a certain length or more, and the data identification means identifies the transfer data as data having a certain length or more. Header packet creation means for creating a header packet including data packet identification information in the header when the data packet is generated, and a data packet corresponding to the header packet created by the header packet creation means and including the data packet identification information in the header Create a data packet And forming means, and normal packet creating means for creating a normal packet if the transfer data by the data identification means is not identified as a data over a certain length,
A header packet transmitting unit for transmitting the header packet via the header transfer HIPPI, and a packet transmitting unit for transmitting the data packet and the normal packet via the data transfer HIPPI; Of the H for the header transfer
Header packet receiving means for receiving a header packet transmitted via IPPI, header packet decomposing means for decomposing the header packet received by the header packet receiving means, and HIPPI for data transfer
Packet receiving means for receiving a data packet and a normal packet transmitted via the packet receiving means; a packet identifying means for identifying whether the packet received by the packet receiving means is a data packet or a normal packet; A data packet collating means for collating the data packet identified by the packet identifying means based on the data packet identification information of the decomposed header packet; and a data packet decomposing means for decomposing the data packet collated by the data packet collating means. And a normal packet decomposing means for decomposing the normal packet identified by the packet identification means. 3. A data transfer method in a HIPPI network in which computers are connected by HIPPI, wherein a HIPPI for header transfer for transmitting a header packet between computers and a HIPPI for data transfer for transmitting a data packet and a normal packet are provided. The network management unit on the transmitting side determines whether or not the transfer data is response-oriented data and whether or not the transfer data is data of a certain length or more. A header packet creating means for creating a header packet including data packet identification information in the header when the data is identified as response-oriented data or data having a certain length or more, and a header packet created by the header packet creating means; Corresponding to header packets And a data packet creating means for creating a data packet including the data packet identification information to Tsu the da, if the transfer data has been identified the Most Do is data KuKatsu more than a predetermined length, such by data emphasize the response by the data identification means A normal packet generating means for generating a normal packet, and transmitting the header packet to the header transfer H
Means for transmitting a header packet via IPPI;
Packet transmitting means for transmitting the data packet and the normal packet via the data transfer HIPPI, and
Header packet receiving means for receiving a header packet transmitted via IPPI, header packet decomposing means for decomposing the header packet received by the header packet receiving means, and HIPPI for data transfer
Packet receiving means for receiving a data packet and a normal packet transmitted via the packet receiving means; a packet identifying means for identifying whether the packet received by the packet receiving means is a data packet or a normal packet; A data packet collating means for collating the data packet identified by the packet identifying means based on the data packet identification information of the decomposed header packet; and a data packet decomposing means for decomposing the data packet collated by the data packet collating means. And a normal packet decomposing means for decomposing the normal packet identified by the packet identification means. 4. A data transfer method in a HIPPI network according to claim 1, wherein said data packet identification information comprises a program number of said data transmission program and a sequential number of transfer data.