Network system capable of managing a network unit from an agent
First Claim
1. A network system comprising a managing unit and a plurality of managed units which are managed by the managing unit and which are connected to the managing unit through a transmission path, each of said managed units comprising:
- a first internal memory having a transfer area which stores a managed data signal of each of the managed units renewable into a current managed data signal; and
a first communication management unit, which is located between the first internal memory and the transmission path, for carrying out an access operation of that zone of the first internal memory which is indicated by the managing unit to notify the managing unit of a result of the access operation;
said managing unit comprising;
a second communication management unit connected to each of the managed units through the transmission path; and
a polling processing unit for notifying each of the managed units of that zone of the first internal memory which is to be polled to acquire the managed data signal from the zone at a time when said each of the managed units is polled, respectively.
1 Assignment
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Accused Products
Abstract
In a network management system for managing a network unit from an agent, an internal memory is included in the network unit to store current managed data signals while an agent internal memory is included in the agent to transcribe the current managed data signals from the network unit to the agent by a polling processing unit of the agent. The polling processing unit can acquire the current managed data signals from a zone of the internal memory at a time when the network unit is polled by accessing the zone of the internal memory. Alternatively, an alarm data signal which is representative of a detail of a fault is transferred from the network unit to the agent through an interface which is included in each of the network unit and the agent and which is used in common to transmission of managned data signals. Both the interfaces are connected to each other through a transmission path. An alarm signal indicative of occurrence of the fault is transmitted from the network unit to the agent through an interruption line and the common interface which is included in each of the network unit and the agent.
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Citations
36 Claims
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1. A network system comprising a managing unit and a plurality of managed units which are managed by the managing unit and which are connected to the managing unit through a transmission path, each of said managed units comprising:
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a first internal memory having a transfer area which stores a managed data signal of each of the managed units renewable into a current managed data signal; and a first communication management unit, which is located between the first internal memory and the transmission path, for carrying out an access operation of that zone of the first internal memory which is indicated by the managing unit to notify the managing unit of a result of the access operation; said managing unit comprising; a second communication management unit connected to each of the managed units through the transmission path; and a polling processing unit for notifying each of the managed units of that zone of the first internal memory which is to be polled to acquire the managed data signal from the zone at a time when said each of the managed units is polled, respectively.
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2. A network system comprising a plurality of managed units and a managing unit which is connected to a transmission path and which manages the managed units, each of said managed units comprising:
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a first internal memory, which has a plurality of first memory addresses determining a plurality of zones in a transfer area, for storing, in the transfer area, first, second, and third groups of managed data signals which are to be processed in different manners and which are renewed into first, second, and third current managed data signals, respectively; and a first communication management unit, which is located between the first internal memory and the transmission path and which is responsive to an indication from the managing unit, for accessing those zones of the first internal memory which are indicated by the indication to transmit, as a result of the access, the first, the second, and the third current managed data signals through the transmission path at a time in response to the indication; said managing unit comprising; a second communication management unit connected to the transmission path; a second internal memory, having a plurality of second memory addresses specifying second memory areas, for transcribing contents of the transfer area of the first internal memory of each of the managed units; an information storage unit for keeping the second memory addresses which define the second memory areas for transcribing the first, the second, and the third current managed data signals and which are related to the zones determined by the first memory addresses; and a polling processing unit, coupled to the information storage unit, for detecting the zones of the first, the second, and third current managed data signals in the first memory transfer area to notify each managed unit of the zones of the first through the third current managed data signals in the form of the indication and to acquire the first through the third current managed data signals at a time from each managed unit. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A network system comprising a managing unit and a plurality of managed units which are managed by the managing unit and which are connected to the managing unit through a transmission path, each of said managed units comprising:
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a first internal memory having a transfer area and a nontransfer area, for storing managed data signals which are related to each of the managed units, the managed data signals stored in the transfer area and the nontransfer area being renewable into current managed at a signals; and a first communication management unit, which is located between the first internal memory and the transmission path, for carrying out an access operation of that zone in the first internal memory which is indicated by the managing unit to notify the managing unit of a result of the access operation; said managing unit comprising; a second communication management unit connected to each of the managed units through the transmission path; and an on demand access processing unit for notifying each of the managed units of that zone of the first internal memory which is to be accessed to acquire the managed data signal from the transfer and the nontransfer areas at a time when said each of the managed units is accessed, respectively, by the on demand access processing unit. - View Dependent Claims (13)
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14. A network system comprising a managing unit and a plurality of managed units which are managed by the managing unit and which are connected to the managing unit through a transmission path, each of said managed units comprising:
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a first internal memory having a transfer area and a nontransfer area, for storing managed data signals which are related to each of the managed units, the managed data signals stored in the transfer area and the nontransfer area being renewable into current managed data signals; and a first communication management unit, which is located between the first internal memory and the transmission path, for carrying out an access operation of that zone of the first internal memory which is indicated by the managing unit to notify the managing unit of a result of the access operation; said managing unit comprising; a second communication management unit connected to each of the managed units through the transmission path; an information storage unit for keeping a relationship of addresses between the transfer area of the first internal memory and a corresponding memory area of a second internal memory and a relationship between addresses of the nontransfer area of the first internal memory and corresponding virtual addresses of the second internal memory; an on demand access processing unit for notifying each of the managed units of the zone of the first internal memory which is to be accessed to acquire the managed data signal from the transfer and the nontransfer areas at a time when said each of the managed units is accessed, respectively, by the on demand access processing unit, by converting the areas between the first and the second internal memories; and an address converter coupled to the on demand access processing unit for carrying out address conversion between the first and the second internal memories. - View Dependent Claims (15, 16, 17, 18)
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19. A network system for use in communication between a network unit and a managing unit through an information line to monitor the network unit from the managing unit by carrying out an access operation of the network unit from the managing unit to transfer managed data signals from the network unit to the managing unit on the access operation, the managing unit being accessed by the network unit on occurrence of a fault in the network unit to transfer an alarm data signal representative of a detail of the fault from the network unit to the managing unit, the network system comprising:
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an information path connected between the managing unit and the network unit to carry out the access operation of the network unit from the managing unit to transfer both the managed data signals and the alarm data signal from the network unit to the managing unit; and an interruption line connected between the managing unit and the network unit to transfer an alarm signal which is representative of occurrence of the fault in the network unit and which is sent from the network unit to the managing unit before transfer of the alarm data signal. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification