US5734642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for network synchronization
Assignee: CA Inc
•
Filing: 1995-12-22
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Granted: 1998-03-31
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Expires: 2015-12-22
Abstract
Abstract According to several aspects of the present invention, a network is monitored for status information indicative of the status of a manageable device within the network. A network manager receives the status information, and updates or initializes a device model in accordance with the status information. A state machine may be used to determine a new state for the device model, and to enable or disable the device model. The network manager may also take action to inquire as to the status of the manageable device, for example by polling the manageable device or by initiating a discovery process. The device model may be used by the network manager as a basis by which to control the manageable device, and thus control aspects of the communications within the network.
Inventors
- 👤 Vick Vaishnavi
- 👤 Patrick R. Kenny
- 👤 Michael J. Rydeen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:40
CPC Classifications
H; H04; H04L; H04L41/00; H04L41/02; H04L41/0213; H04L43/00
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
106 words
A method for determining a status of a device in a communications network, comprising the steps of: receiving a status report, including information regarding the device; determining a previous state of the device; and maintaining a model of the device based upon a combination of the previous state of the device and the information regarding the device, wherein the step of maintaining includes setting a state of the model of the device to one of a predetermined plurality of states, the predetermined plurality of states including an established after lost state indicative that a successful discovery has not yet been performed with respect to the device.
Claim 2
Independent Claim
106 words
A method for determining a status of a device in a communications network, comprising the steps of: receiving a status report, including information regarding the device; determining a previous state of the device; and maintaining a model of the device based upon a combination of the previous state of the device and the information regarding the device, wherein the step of maintaining includes setting a state of the model of the device to one of a predetermined plurality of states, the predetermined plurality of states including an established after lost state indicative that a successful discovery has not yet been performed with respect to the device.
Claim 3
Dependent Claim
50 words
The method of claim 1, further comprising the step of querying the device to provide additional information, and wherein the step of maintaining includes maintaining the model of the device based upon a combination of the previous state of the device, the information regarding the device, and the additional information.
Claim 4
Dependent Claim
25 words
The method of claim 1, wherein the step of receiving the status report includes receiving a message indicative of a hard reboot of the device.
Claim 5
Dependent Claim
25 words
The method of claim 1, wherein the step of receiving the status report includes receiving results of a discovery process performed on the communications network.
Claim 6
Dependent Claim
25 words
The method of claim 4 further comprising the step of initiating the discovery process in response to a state of the model of the device.
Claim 7
Dependent Claim
20 words
The method of claim 1, wherein the step of receiving the status report includes receiving results of a polling process.
Claim 8
Dependent Claim
25 words
The method of claim 1, further comprising the step of initiating the polling process in response to a state of the model of the device.
Claim 9
Dependent Claim
28 words
The method of claim 1, further comprising the step of providing a reset command to the device in response to a state of the model of the device.
Claim 10
Dependent Claim
28 words
The method of claim 1, wherein the step of maintaining includes enabling the model to indicate that the device is ready to be controlled by a network manager.
Claim 11
Dependent Claim
29 words
The method of claim 1 wherein the step of maintaining includes disabling the model to indicate that the device is not ready to be controlled by a network manager.
Claim 12
Dependent Claim
71 words
The method of claim 1, wherein the predetermined plurality of states further includes: an unknown state indicative that there is insufficient information to determine a capability of the device; an initialized state indicative that the device has been discovered and is ready to be controlled by a network manager; and a lost state indicative that the device was previously ready to be controlled but did not respond to a status inquiry.
Claim 13
Dependent Claim
68 words
The method of claim 1, wherein the step of maintaining includes the steps of: providing the previous state of the device and the information regarding the device to a state machine; receiving an output of the state machine, the output being responsive to the previous state of the device and the information regarding the device; and maintaining the model in accordance with the output of the state machine.
Claim 14
Independent Claim
113 words
An apparatus for determining a status of a device in a communications network, the apparatus comprising: means for receiving a status report, including information regarding the device; means for determining a previous state of the device; and means for maintaining a model of the device based upon a combination of the previous state of the device and the information regarding the device, wherein the means for maintaining includes means for setting a state of the model of the device to one of a predetermined plurality of states, the predetermined plurality of states including an established after lost state indicative that a successful discovery has not vet been performed with respect to the device.
Claim 15
Independent Claim
113 words
An apparatus for determining a status of a device in a communications network, the apparatus comprising: means for receiving a status report, including information regarding the device; means for determining a previous state of the device; and means for maintaining a model of the device based upon a combination of the previous state of the device and the information regarding the device, wherein the means for maintaining includes means for setting a state of the model of the device to one of a predetermined plurality of states, the predetermined plurality of states including an established after lost state indicative that a successful discovery has not vet been performed with respect to the device.
Claim 16
Dependent Claim
51 words
The apparatus of claim 13 further comprising means for querying the device to provide additional information, and wherein the means for maintaining includes means for maintaining the model of the device based upon a combination of the previous state of the device, the information regarding the device, and the additional information.
Claim 17
Dependent Claim
20 words
The apparatus of claim 13, wherein the status report includes a message indicative of a hard reboot of the device.
Claim 18
Dependent Claim
20 words
The apparatus of claim 13, wherein the status report includes results of a discovery process performed on the communications network.
Claim 19
Dependent Claim
24 words
The apparatus of claim 16, further comprising means for initiating the discovery process in response to a state of the model of the device.
Claim 20
Dependent Claim
15 words
The apparatus of claim 13, wherein the status report includes results of a polling process.
Claim 21
Dependent Claim
24 words
The apparatus of claim 18, further comprising means for initiating the polling process in response to a state of the model of the device.
Claim 22
Dependent Claim
27 words
The apparatus of claim 13, further comprising means for providing a reset command to the device in response to a state of the model of the device.
Claim 23
Dependent Claim
30 words
The apparatus of claim 13, wherein the means for maintaining includes means for enabling the model to indicate that the device is ready to be controlled by a network manager.
Claim 24
Dependent Claim
31 words
The apparatus of claim 13, wherein the means for maintaining includes means for disabling the model to indicate that the device is not ready to be controlled by a network manager.
Claim 25
Dependent Claim
71 words
The apparatus of claim 13, wherein the predetermined plurality of states further includes: an unknown state indicative that there is insufficient information to determine a capability of the device; an initialized state indicative that the device has been discovered and is ready to be controlled by a network manager; and a lost state indicative that the device was previously ready to be controlled but did not respond to a status inquiry.
Claim 26
Dependent Claim
71 words
The apparatus of claim 13, wherein the means for maintaining includes: means for providing the previous state of the device and the information regarding the device to a state machine; means for receiving an output of the state machine, the output being responsive to the previous state of the device and the information regarding the device; and means for maintaining the model in accordance with the output of the state machine.
Claim 27
Independent Claim
136 words
An apparatus for determining a status of a device in a communications network, the apparatus comprising: a model of the device containing information regarding a previous state of the device; a model control module coupled to the model of the device, the model control module having an input that receives a status report including information regarding the device, and an output that maintains the model of the device based upon a combination of the previous state of the device and the information regarding the device, wherein the output of the model control module sets a state of the model of the device to one of a predetermined plurality of states, the predetermined plurality of states including an established after lost state indicative that a successful discovery has not yet been performed with respect to the device.
Claim 28
Independent Claim
136 words
An apparatus for determining a status of a device in a communications network, the apparatus comprising: a model of the device containing information regarding a previous state of the device; a model control module coupled to the model of the device, the model control module having an input that receives a status report including information regarding the device, and an output that maintains the model of the device based upon a combination of the previous state of the device and the information regarding the device, wherein the output of the model control module sets a state of the model of the device to one of a predetermined plurality of states, the predetermined plurality of states including an established after lost state indicative that a successful discovery has not yet been performed with respect to the device.
Claim 29
Dependent Claim
60 words
The apparatus of claim 25, further comprising a mechanism, coupled to the model control module, the mechanism providing a query to the device so that the device provides additional information, the model control module maintaining the model of the device based upon a combination of the previous state of the device, the information regarding the device, and the additional information.
Claim 30
Dependent Claim
20 words
The apparatus of claim 25, wherein the status report includes a message indicative of a hard reboot of the device.
Claim 31
Dependent Claim
20 words
The apparatus of claim 25, wherein the status report includes results of a discovery process performed on the communications network.
Claim 32
Dependent Claim
39 words
The apparatus of claim 28, further comprising a discovery mechanism, coupled to the model control module and the communications network, the discovery mechanism being responsive to the model control module to invoke a discovery process on the communications network.
Claim 33
Dependent Claim
15 words
The apparatus of claim 25, wherein the status report includes results of a polling process.
Claim 34
Dependent Claim
38 words
The apparatus of claim 30, further comprising a polling manager coupled to the model control module and the communications network, the polling manager being responsive to the model control module to initiate the polling process on the device.
Claim 35
Dependent Claim
37 words
The apparatus of claim 25, further comprising a reset mechanism, coupled to the model control module and the communications network, the reset mechanism being responsive to the model control module to command a reset of the device.
Claim 36
Dependent Claim
30 words
The apparatus of claim 25, wherein the output of the model control module enables the model to indicate that the device is ready to be controlled by a network manager.
Claim 37
Dependent Claim
31 words
The apparatus of claim 25, wherein the output of the model control module disables the model to indicate that the device is not ready to be controlled by a network manager.
Claim 38
Dependent Claim
71 words
The apparatus of claim 25, wherein the predetermined plurality of states further includes: an unknown state indicative that there is insufficient information to determine a capability of the device; an initialized state indicative that the device has been discovered and is ready to be controlled by a network manager; and a lost state indicative that the device was previously ready to be controlled but did not respond to a status inquiry.
Claim 39
Dependent Claim
71 words
The apparatus of claim 25, wherein the means for maintaining includes a state machine coupled to the model control module and the model of the device, the state machine having a first input that receives the previous state of the device, a second input that receives the information regarding the device to a state machine, and an output that provides information based upon which the model control module maintains the model.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-03-30 | 2001-09-29 | 2002-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-30 | 2005-09-29 | 2006-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-30 | 2009-09-29 | 2010-03-31 | $7700.00 | Window Closed / Lapsed |