JP3427951B2 - Relay transfer control system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for relaying and transferring information through a plurality of relay devices such as a switching system and an information processing system, and particularly to an operation at the time of hot-line insertion in expansion of the system. The present invention relates to a relay transfer control system suitable for efficient operation.

[0002]

2. Description of the Related Art A switching system, an information processing system, and the like have a CPU (Central Processing).
Unit) and memory, information processing device, IO
A device such as (Input Output, input / output device) is connected to the bus, but it is a relay device for duplicating the device or connecting a plurality of devices for the purpose of improving reliability. To expand the bus. When the relay device is hot-plugged or the power supply is turned on or reset due to the duplication of the device or the expansion of the bus, the relay device notifies the information processing device of the energized state, and the information processing device which receives the notification By the processing, the processing for incorporating the device is performed. At this time, the relay device relays information immediately after the power is turned on or reset.Therefore, when replacing a relay device due to a failure or upgrade, a maintenance procedure that considers the hot-plugging sequence when replacing a redundant relay device is performed. Was needed.

For example, when the maintenance person simultaneously hot-plugs the relay device on the basic bus side and the relay device on the expansion side, the information from the relay device on the expansion bus side may be the basic information depending on the hot-plugging timing. It may be sent before the information of the relay device on the bus side. In that case, the installation process of the relay device on the expansion bus side by the information processing device is executed before the installation process of the relay device on the basic bus side. But,
In this case, since the installation process of the relay device on the basic bus side has not been completed, the installation process of the relay device on the expansion bus side becomes abnormal, resulting in a control contradiction. Conventionally, in order to avoid such control contradiction, in consideration of the processing of the information processing device,
"Relay processing device on the basic bus side → Relay device on the expansion bus side"
In that order, a maintenance procedure for hot-plugging each relay device was required.

[0004]

The problem to be solved is that the conventional technique cannot automatically control the hot-line insertion sequence at the time of replacement due to a failure or upgrade of the duplicated relay device. Is. It is an object of the present invention to provide a relay transfer control system that solves the problems of the conventional techniques and can improve the maintenance performance of an exchange system or an information processing system including a relay device.

[0005]

In order to achieve the above object, the relay transfer control system of the present invention comprises (a) a basic bus
And a basic bus side relay device that relays
It has a relay device on the extension bus side , sends the status notification information to the information processing device when the relay device on the basic bus side is energized or reset, and requests the information processing device to incorporate its own device. A relay transfer control system that receives status notification information from a device and relay-transfers it to an information processing device, and sends the status notification information of its own device (basic bus side relay device 4) to the information processing device (6). Among them, a relay transfer suppression unit (relay transfer control unit 11a, energization detection /
The notification controller 12a and the control register 13a) are provided. (B) In the relay transfer control system according to (a) above, the relay transfer inhibiting unit includes a relay transfer control unit (11a) that receives status notification information from another device (expansion bus side relay device 5). , The status notification information is sent by detecting the energization or reset of the self apparatus (basic bus side relay apparatus 4), and the status notification information from another apparatus (expansion bus side relay apparatus 5) by the relay transfer control unit (11a). Energization detection / notification control unit (12a) for suppressing reception operation of
It has at least and. Also, (C)
In the relay transfer control system described in (b) above, a control register (13a) is provided that sets a flag based on the detection of energization or reset of the self device (basic bus side relay device 4) by the energization detection / notification control unit (12a). The relay transfer control unit (11a) is characterized by determining whether to receive the status notification information from another device (expansion bus side relay device 5) based on the flag status of the control register (13a). .

[0006]

According to the present invention, the relay device that relays and transfers information can be prevented from receiving information from other devices until it finishes sending its own information. As a result, it is possible to avoid control inconsistency of the information processing device related to hot insertion at the time of replacement or the like due to failure or upgrade of the duplicated relay device, and to maintain the maintenance procedure in consideration of the hot insertion order of the relay device. It becomes unnecessary.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the configuration of the relay transfer control system of the present invention according to the present invention. In the figure, 1 is a basic serial bus, 2 is an extended serial bus, 3 is a relay signal line, 4 is a basic bus side relay device for performing relay transfer control according to the present invention, 5 is an extended bus side relay device, and 6 is Basic bus side relay device 4 and expansion bus side relay device 5
An information processing device for performing embedded processing, etc., 7a and 7b are relay bus interface control units having a relay transfer control function according to the present invention (indicated as relay bus I / F in the figure), and 8 is an information processing device. 6, a bus interface control unit (indicated as I / F in the drawing) for controlling connection with the basic serial bus 1, and 9a to 9c via the basic bus side relay device 4 and the basic serial bus 1 of the information processing device 6. A transmission / reception control unit for controlling transmission / reception of information, and transmission / reception of information via the expansion serial bus 2 of the expansion bus side relay device 5
10c are internal buses for data transfer in each device, 11a,
11b is a basic bus side relay device 4 and an expansion bus side relay device 5
A relay transfer control unit 12a, 12b for controlling transmission / reception of information between terminals and a relay transfer control according to the present invention, 12a, 12b is an energization detection / notification control unit according to the present invention, 13a, 13b is a control register for the present invention, Reference numerals 14a and 14b are reception suppression control signal lines, and 15 is a device built-in processing control unit that performs built-in processing of the basic bus side relay device 4, the extended bus side relay device 5, and the like. The processing device 6 and the relay device 4 are connected, and the basic serial bus 1 and the extended serial bus 2 are connected by the relay signal line 3, the basic bus side relay device 4, and the expansion bus side relay device 5. The device embedding processing control unit 15 is a control core including a CPU and a memory, and a program for device embedding processing is stored in this memory. Based on this program, device assembling processing is performed in the order of receiving hot-line insertion notifications. Include processing. The operation of each unit relating to the relay transfer control of the present invention having such a configuration will be described below.

When the basic bus side relay device 4 connected to the basic serial bus 1 is hot-plugged, the basic bus side relay device 4 has the energization detection / notification control unit 12a in the relay bus interface control unit 7a. To detect energization. Upon detecting this energization, the energization detection / notification control unit 12a sets the reception inhibition flag of the control register 13a connected via the data transfer internal bus 10a to "1". This reception suppression flag is referred to by the relay transfer control unit 11a via the reception suppression control signal line 14a. When the reception suppression flag is "1", the relay transfer control unit 11a informs the information from the relay signal line. Do not accept input.

The energization detection / notification control unit 12a sets the reception inhibition flag "1" of the control register 13a,
The transmission / reception control unit 9 is provided via the data transfer internal bus 10a.
The hot-line insertion notification information is sent to a. Transmission / reception control unit 9a
Sends this hot-line insertion notification information to the information processing device 6 via the basic serial bus 1. Basic bus side relay device 4
The information processing device 6 that has received the hot-line insertion notification information from
The transmission / reception control unit 9c in the bus interface control unit 8 sends this information to the device built-in processing control unit 15 via the data transfer internal bus 10c. Upon receiving the hot-line insertion notification information, the device installation processing control unit 15 performs the installation process for the basic bus side relay device 4 based on the program stored in the memory in advance.

In the basic bus side relay device 4 which has sent the hot-line insertion notification information, the transmission / reception control unit 9a causes the energization detection / notification control unit 1 via the data transfer internal bus 10a.
2a is notified that hot-line insertion notification information has been sent.
Upon receiving this notification, the energization detection / notification control unit 12a receives the control register 13 via the data transfer internal bus 10a.
The reception suppression flag of a is set to "0", and the relay transfer control unit 11a is instructed to release the suppression control via the reception suppression control signal line 14a. Based on this instruction, the relay transfer control unit 11a cancels the inhibition control, and thereafter, when information is input from the relay signal line 3, the data transfer internal bus 1
It is sent to the transmission / reception control unit 9a via 0a.

When the expansion bus side relay device 5 connected to the expansion serial bus 2 is hot-plugged, the expansion bus side relay device 5 is inserted when the basic bus side relay device 4 is hot-plugged. Then, the hot-line insertion notification information is sent from the relay transfer control unit 11b to the basic bus side relay device 4 via the relay signal line 3. The basic bus side relay device 4 receives the hot-line insertion notification information from the expansion bus side relay device 5 at the relay transfer control unit 11a and causes the transmission / reception control unit 9a to
Transfer to the information processing device 6 via the basic serial bus 1. The information processing device 6 that has received the hot-line insertion notification information from the expansion bus side relay device 5 relayed and transferred by the basic bus side relay device 4 causes the device embedding processing control unit 15 to execute the program stored in the memory in advance. Based on this, the incorporation processing for the expansion bus side relay device 5 is performed.

Even when the hot-plugging of the expansion bus side relay device 5 is performed at the same time as the hot-plugging of the basic bus side relay device 4, the hot-line insertion notification information from the expansion bus side relay device 5 is sent. However, the relay transfer control unit 11b and the relay signal line 3
Via the relay transfer control unit 11 of the basic bus side relay device 4.
sent to a. However, in such a case, since the reception inhibition flag of the control register 13a is "1",
The relay transfer control unit 11a does not accept information input from the relay signal line 3. As a result, the hot-line insertion notification information from the expansion bus side relay device 5 is not transferred to the information processing device 6, and the information processing device 6 does not perform the incorporation process for the expansion bus side relay device 5. In this way, it is possible to avoid the control contradiction in the information processing device 6 that has occurred conventionally when the hot-plugging of the expansion bus side relay device 5 is performed at the same time as the hot-plugging of the basic bus side relay device 4. be able to.

The operation of the relay transfer control of the basic bus side relay device 4 will be described below with reference to FIG. FIG. 2 is a flowchart showing an example of the processing operation of the basic bus side relay device in FIG. 1 according to the present invention. When the hot line is inserted or the power is turned on (step 201), the basic bus side relay device 4 of FIG.
1 detects this energization by the energization detection / notification control unit 12a of FIG. 1, sets the reception suppression flag of the control register 13a of FIG. 1 to "1" (step 202), and notifies the hot-line insertion notification of itself. 1 to the information processing device 6 (step 2)
03). When this hot-line insertion notification is completed (step 204), the reception suppression flag of the control register 13a of FIG. 1 is returned to “0”, and the relay transfer control unit 11a of FIG. 1 inputs information from the relay signal line 3. The suppression control of is canceled (step 205). Thereafter, when information is input from the relay signal line 3 of FIG. 1 (step 206), the relay transfer control unit 11a of FIG. 1 receives the information from the relay signal line 3 (step 207). 1 to the basic serial bus 1 (step 208).

As described above with reference to FIGS. 1 and 2, in the present embodiment, the relay device (the basic bus side relay device 4 and the expansion bus side relay device 5) for relaying and transferring information.
Can suppress receiving information from other devices until it finishes transmitting its own information. As a result, the basic bus side relay device 4 and the expansion bus side relay device 5
When each of them simultaneously detects the energization of itself, the hot-line insertion notification of the expansion bus side relay device 5 is waited by the reception inhibiting operation of the basic bus side relay device 4, and the After the reception inhibition is released after the hot-line insertion notification, the hot-line insertion notification of the expansion bus side relay device 5 can be sent to the information processing device 6. As a result, it is possible to avoid a control contradiction of the information processing device related to hot-plugging when a redundant relay device fails or is replaced due to an upgrade, and a maintenance procedure in consideration of the hot-plugging order of relay devices is unnecessary. Becomes The present invention is not limited to the embodiment described with reference to FIGS. 1 and 2, and various modifications can be made without departing from the scope of the invention. For example, in the present embodiment, the operation is described with the energization as a trigger,
It is also possible to use a reset as an opportunity.

[0015]

According to the present invention, it is possible to automatically control the hot-line insertion order at the time of replacement or the like due to the failure or upgrade of the duplicated relay device, and to relay the exchange system or the information processing system. It is possible to improve the maintenance performance of the system including the device.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a configuration of a relay transfer control system of the present invention according to the present invention.

FIG. 2 is a flowchart showing an example of the processing operation of the basic bus side relay device in FIG. 1 according to the present invention.

[Explanation of symbols]

1 Basic serial bus 2 Extended serial bus 3 Relay signal line 4 Basic bus side repeater 5 Expansion bus side relay device 6 Information processing equipment 7a, 7b Relay bus interface control unit 8 Bus interface controller 9a-9c Transmission / reception control unit 10a-10c Internal bus for data transfer 11a, 11b Relay transfer control unit 12a, 12b Energization detection / notification control unit 13a, 13b control register 14a, 14b reception suppression control signal line 15 Device built-in processing control unit

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuyuki Okada 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Within Nippon Telegraph and Telephone Corporation (72) Inventor Tahara Tahomon 1-7-12 Toranomon, Minato-ku, Tokyo Oki Electric Industrial Co., Ltd. (72) Inventor Noboru Wada 1-7-12 Toranomon, Minato-ku, Tokyo Oki Electric Industrial Co., Ltd. (56) Reference JP-A-5-11888 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04L 29/10 G06F 3/00 H04L 13/08

Claims (3)

(57) [Claims] 1. A base bus and an extension bus are relayed respectively.
It has a relay device on the basic bus side and a relay device on the expansion bus side.
The status notification information is sent to the information processing device upon the energization or reset of the basic bus side relay device, and the information processing device is requested to incorporate the basic bus side relay device. In the relay transfer control system for receiving the status notification information from the relay apparatus and transferring the status notification information to the information processing apparatus, the expansion bus side relay apparatus is transmitting the status notification information of the basic bus side relay apparatus to the information processing apparatus. A relay transfer control system, comprising: relay transfer suppressing means for suppressing reception of status notification information from a server. 2. The relay transfer control system according to claim 1, wherein the relay transfer suppressing means receives relay status control information from the expansion bus relay device, and the energization of the basic bus relay device. Alternatively, it has at least energization detection / notification control means for detecting the reset and transmitting the status notification information, and for suppressing the reception operation of the status notification information from the expansion bus relay device by the relay transfer control means. And relay transfer control system. 3. The relay transfer control system according to claim 2, further comprising means for setting a flag on the basis of detection of energization or reset of the basic bus relay device by the energization detection / notification control means, The relay transfer control means, based on the state of the above flag,
A relay transfer control system characterized by determining whether or not to receive status notification information from the expansion bus relay device.