JP2002314553A - Intra-equipment management control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of a conventional intra-equipment management control system that managed system units cannot have used a bus when one managed system unit enters a fault mode in the midst of acquiring preferential right of use of the bus. SOLUTION: The intra-equipment management control system is provided with managed system units 3-1 to 3-3 having physical ports of a LAN interface, a managing system unit 1 that applies management control to the managed system units 3-1 to 3-3 and has the physical ports of the LAN interface, an NMS(network management system) 5 that manages the intra-equipment management system comprising the managed system units 3-1 to 3-3 and the managing system unit 1, a changeover circuit 4 that interconnects the managing system unit 1, the managed system units 3-1 to 3-3, and the NMS 5, is provided with the physical ports of the LAN interface to connect them and has ports numbers, and an NMS interface unit 2 that is interposed between the NMS 5 and the changeover circuit 4 to convert the interface between them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an in-apparatus management control system, and more particularly to an in-apparatus management control system when a management unit and an NMS control a plurality of managed units via a single serial bus.

[0002]

2. Description of the Related Art Conventionally, this kind of in-apparatus management control system is composed of a management system unit and a plurality of managed system units for the purpose of centralizing management. In this case, the management system unit and the plurality of managed system units are connected via a control bus of a serial bus as described in, for example, “In-device monitoring and control system” of JP-A-2000-113414. However, the bus used here is only a control bus, and a network management system (NMS: Network)
ork Management System) It is not intended for a control bus.

On the other hand, SONET (Synchr)
Conventional SDH (Synchronous D) applied to an on-use Optical Network
The internal control bus in the digital hierarchy transmission apparatus has a circuit configuration in which the control system control bus and the NMS system control bus are made independent and two systems because the control targets in the apparatus are different.

FIG. 3 shows an example of a configuration of an in-device management control system in a conventional SDH transmission device using these two control buses.

In this configuration, the management system unit 1 and the managed system units 3-1 to 3-3 are connected via a management system control bus 6. NMS interface unit 2
Is connected to the NMS terminal 5 and connected to the managed units 3-1 to 3-3 via the NMS control bus 7.
Note that arrows at both ends of the signal line in the drawing indicate the direction of transmission and reception of communication commands.

Next, the operation will be described.

The management system unit 1 and the NMS interface unit 2 perform independent control processing. Each of the managed system units 3-1 to 3-3 has a management system control processing unit and an NMS system control processing unit (not shown), and recognizes that the destination of the received command is its own unit. The contents of the received command are determined and processing is performed.

Each of the managed units 3-1 to 3-3 has a physical port with respect to two control buses of a management system control bus 6 and an NMS system control bus 7. Further, it is necessary to monitor the destinations of all communication commands exchanged on these control buses. And, for example,
When the managed system unit 3-1 enters the failure mode while acquiring the priority of use of the bus during command communication on the managed system control bus 6, the managed system unit 3-2, 3 on the same bus is used. -3, the right to use the bus cannot be obtained, and communication with the management system unit 1 becomes impossible. As a result, the management system control bus 6 itself becomes unusable, and a similar phenomenon may occur in the NMS system control bus.

[0009]

A first problem is that a managed system unit in a conventional device in which a management system control bus and an NMS system control bus are independent requires a physical interface circuit. Therefore, the circuit scale of the entire apparatus becomes large.

[0010] The second problem is that the managed system unit needs to process the management system control and the NMS system control separately, so that the processing load is heavy.

A third problem is that if any managed system unit falls into the failure mode while acquiring the priority of using the control bus, the other managed system unit will be controlled by the control bus. Can not be used.

An object of the present invention is to provide a management control bus in a device and an NMS control bus in the device of the SDH transmission device. It is to provide a control bus system and a switching circuit.

[0013]

According to a first aspect of the present invention, there is provided an in-apparatus management control system for managing a unit to be managed in an apparatus. A management unit that performs independent management control on the managed unit, an NMS that integrally manages the plurality of managed units, and a single system that connects the plurality of managed units, the management unit, and the NMS. A serial bus.

The management control system in the apparatus according to the present invention comprises:
Second, the one-system serial bus is constituted by a switching circuit having a LAN interface.

The management control system in the apparatus according to the present invention comprises:
Third, each of the plurality of managed units includes a management control processing unit that processes command packets from the management unit, and an NMS control processing unit that processes command packets from the NMS.

The in-apparatus management control system according to the present invention comprises:
Fourth, the switching circuit includes a physical port of the LAN interface for connecting to the management system unit, the managed system unit, and the NMS, and the management system control processing unit, the NMS system control processing unit, Each of the management system unit and the NMS includes a physical port of the LAN interface for connecting to the switching circuit.

An in-apparatus management control system according to the present invention comprises:
Fifth, the management control processing unit and the NMS control processing unit each have a MAC address, and each physical port of the switching circuit has a port number.

The in-apparatus management control system according to the present invention comprises:
Sixth, the switching circuit includes: an address table indicating a correlation between the MAC address and the port number; a packet buffer for storing a command packet from the management unit and a command packet from the NMS; Command packet from unit and said NMS
From these command destination MACs from command packets from
The command packet stored in the packet buffer is analyzed in the physical port of the management system control processing unit and the NMS system control processing unit of the corresponding destination MAC address registered in the address table by analyzing the address. And a switch controller for distributing and transferring.

The in-apparatus management control system according to the present invention comprises:
Seventh, the device is an SDH transmission device.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an in-device management control system according to an embodiment of the present invention will be described with reference to the drawings.

According to the block diagram of FIG. 1 showing an embodiment of the present invention, an in-device management control system of an SDH transmission device includes a managed system unit 3 provided in the device and having a physical port of a LAN interface. A management system unit 1 which is provided in the same apparatus having a physical port of a LAN interface for managing and controlling the managed system units 3-1 to 3-3; NMS terminal 5 provided outside the device that manages the in-device system constituting management system units 3-1 to 3-3, management system unit 1, managed system units 3-1 to 3-3, and NMS
A switching circuit 4 having a physical port of a LAN interface for connecting the terminal 5 and connecting the terminal 5 and having the port number, and an interface between the NMS terminal 5 and the switching circuit 4 for performing interface conversion between the two. An NMS interface unit 2.

Then, the managed system units 3-1 to 3-3
Are provided with a management system control processing unit for processing a command from the management system unit 1 and an NMS system control processing unit for processing a command from the NMS terminal 5, each of which is not shown. LAN for connection to circuit 4
MAC with interface physical port
(Media Access Control) address.

Referring to FIG. 2, the switching circuit 4 includes:
An address table 43 indicating the correlation between the MAC address of each of the managed units 3-1 to 3-3 and the port number of the internal physical port; a management packet from the management unit 1; A packet buffer 42 for storing NMS packets, and a management unit 1
It is checked whether the destination MAC address of the management packet received from the NMS terminal 5 and the NMS packet received from the NMS terminal 5 are registered in the address table 43, and the received packets are stored in the managed unit 3.
-1 to 3-3, and a switch controller 44 for deciding and controlling which of the management system control processing units and the NMS system control processing unit to transfer to the physical port. -3 to 1-3-3 and a transmission unit 411 for connecting to the NMS interface unit 2
It includes a physical interface unit 41-1 to 41-5 having a receiving unit 412, an encoder 413, and a decoder 414.

More specifically, the management system unit 1 or the NM
S interface unit 2 and managed unit 3-1
The exchange of communication with ~ 3-3 is performed by the managed unit 3-
Switching is performed by the switching circuit 4 according to the correlation between the MAC address assigned to the LAN termination unit of each of the management system control processing unit and the NMS system control processing unit and the physical port of the switching circuit 4. Sent to the physical port.

Each of the managed units 3-1 to 3-3 has only one physical port because the control bus to the switching circuit 4 is one system. Since all the received communication packets are addressed to the own unit, there is no need to monitor the destination of the packets.

The switching circuit 4 distributes the right to use the control bus between each of the managed units 3-1 to 3-3 and the switching circuit 4. For example, the managed unit 3-
If the switch 1 enters the failure mode during command communication, the switching circuit 4 recognizes that the managed unit 3-1 has been disconnected from the bus, and switches the managed unit 3 on the same bus.
The right to use the control bus is distributed to 2, 3-3 in place of the managed system unit 3-1.

Next, the operation of the switching circuit 4 will be described with reference to FIG.

The signals input to the physical interfaces 41-1 to 41-5, which are LAN interfaces,
The signal is converted from a balanced signal to an unbalanced signal by 12 and input to the decoder 414. The decoder 414 decodes the input signal, detects the frame, and outputs the frame to the packet buffer 42. The signal transmitted from the packet buffer 42 is coded by the encoder 413,
The transmission unit 411 converts the unbalanced signal into a balanced signal and outputs the converted signal.

Here, the physical interfaces 41-1 to 4-4
1-5 are provided for each physical port to the management system unit 1, the NMS interface unit 2, and the managed system units 3-1 to 3-3. An arbitrary port number is assigned to each physical port.

The packet buffer 42 stores management system packets synchronized with the frame and transmission / reception packets of the NMS packet. The switch controller 44 analyzes the MAC address of the transmission destination of these packets, and
It checks whether the AC address has already been registered in the address table 43, determines to which port the data is to be transferred, and transfers the port to the corresponding physical port. Also, as a result of checking the address table 43,
If the destination MAC address has not been registered yet,
The information is registered in the address table 43 together with the received port information.

The correlation address table between the connection destination MAC address and the port number can be registered in advance or automatically registered by aging.

The above description has been given of the in-apparatus supervisory control system when applied to the SDH transmission apparatus.
It is apparent that the present invention can be applied not only to the DH transmission apparatus but also to an apparatus having a plurality of units in the apparatus and monitoring and controlling them.

[0033]

The first effect is that the circuit in the managed system unit can be simplified.

The reason is that a common switching circuit is provided on the two control buses to integrate them into one system.

The second effect is that the processing load on the managed unit is reduced. The reason is that it is not necessary to monitor the destinations of all communication commands on the control bus.

A third effect is that, even if an arbitrary managed system unit enters the failure mode, another managed system unit on the same control bus can use the control bus.

The reason is that the switching circuit can disconnect the managed unit in the failure mode from the bus.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an apparatus management control system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a switching circuit in the device management control system of the embodiment.

FIG. 3 is a block diagram showing a conventional device management control system.

[Explanation of symbols]

 Reference Signs List 1 management system unit 2 NMS interface unit 3-1 to 3-3 managed system unit 4 switching circuit 5 NMS terminal 41-1 to 41-5 physical interface unit 42 packet buffer 43 address table 44 switch controller 411 transmission unit 412 reception unit 413 Encoder 414 Decoder

Claims (7)

[Claims] 1. An in-apparatus management control system that manages managed units in an apparatus, wherein the plurality of managed units, a management unit that performs independent management control on the plurality of managed units, and An NMS that integrally manages the managed units, and a single system serial bus that connects the plurality of managed units, the management unit, and the NMS. 2. The in-apparatus management control system according to claim 1, wherein said one serial bus is constituted by a switching circuit having a LAN interface. 3. Each of the plurality of managed units includes a management system control processing unit that processes a command packet from the management unit and an NMS system control processing unit that processes a command packet from the NMS. 2. The in-device management control system according to claim 1, wherein: 4. The switching circuit includes a physical port of the LAN interface for connecting to the management unit, the managed unit, and the NMS, the management system control processing unit, the NMS system control processing unit, and the management unit. 3. The in-apparatus management control system according to claim 2, wherein each of the unit and the NMS includes a physical port of the LAN interface for connecting to the switching circuit. 5. The control system control processing unit and the NMS system control processing unit each have a MAC address, and each physical port of the switching circuit has a port number. In-device management control system. 6. The switching circuit includes: an address table indicating a correlation between the MAC address and the port number; a packet buffer for storing a command packet from the management unit and a command packet from the NMS; Command packet from the N
From the command packet from the MS, these destinations M
The command packet stored in the packet buffer to the physical port of the management system control processing unit and the NMS system control processing unit of the corresponding destination MAC address of the corresponding destination registered in the address table by analyzing the AC address 6. The in-device management control system according to claim 5, further comprising: a switch controller that distributes and transfers the information. 7. The in-device management control system according to claim 1, wherein said device is an SDH transmission device.