NETWORK MANAGEMENT SYSTEM AND NETWORK MANAGEMENT INFORMATION COLLECTING METHOD

• US 20100049781A1
• Filed: 07/28/2006
• Published: 02/25/2010
• Est. Priority Date: 07/29/2005
• Status: Active Grant

• Current Assignee: Cyber Solutions, Inc.
• Original Assignee: Cyber Solutions, Inc.
• Inventors: Keeni, Glenn Mansfield
• Granted Patent: US 7,966,392 B2
• Time in Patent Office: Days
• US Class Current: 709/202
• CPC Class Codes: H04L 41/0213 Standardised network management protocols, e.g. simple network management protocol [SNMP]
• CPC Class Codes: H04L 41/046 comprising network management agents or mobile agents therefor
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 74/06 using polling
• CPC Class Codes: H04W 76/30 Connection release

Abstract

This invention aims to provide a technique that, in wireless network environments, enables the Manager to collect network management information (MIB data in the case of SNMP based network management), which the Agent has stored during periods of disconnection, after connectivity to the mobile nodes has recovered. In a wireless network environment, the Agent (201) has a unit for storing the management information related to network devices with appropriate label information, while the Manager (101) has a unit for sending the Agent a request for a label-specified data, and getting the data which the Agent has stored in Management Information Store 207. The above unit enables the Manager (101) to seamlessly collect the information pertaining to the period of disconnection, which the Agent (201) has stored in Management Information Store 207, after detecting recovery of the connectivity.

Claims

1-9. -9. (canceled)

10. A Method for seamlessly collecting information from a mobile node, which is the method where a Manager gets the information related to network devices by polling Agents in a wireless network environment, wherein the Manager is having

a Procedure-1 of detecting recovery of the connectivity after the connectivity between the Manager and the Agent is lost, and

a Procedure-2 of seamlessly collecting the information pertaining to the period of disconnection, which the Agent has stored, after detecting recovery of the connectivity, and detecting the reboot status of the Agent,

and the above-mentioned Procedure-2 is having a mechanism of collecting the information in the presence of a time lag between the Manager and the Agent.

11. The Method for seamlessly collecting information from a mobile node according to claim 10, wherein the above-mentioned Agent is having

a Procedure of sampling the relevant probes for management information at pre-configured time intervals P′

, appending appropriate label information to the sampled management information, and storing the labeled sampled information in a Management Information Store M2, and

a Procedure of looking up the Management Information Store M2 for the label-specified data when the Agent receives a request from the Manager to deliver the label-specified data, and returning the data to the Manager, and

a Procedure of returning the message “

no data”

to the Manager, if the label-specified data is not found in the Management Information Store M2.

12. The Method for seamlessly collecting information from a mobile node according to claim 10, wherein the above-mentioned Manager is having

a Procedure of sending the Agent a request for a label-specified data at pre-configured Polling-intervals P and receiving either “

requested data”

or “

no data”

from the Agent in response, and

a Procedure of detecting “

Timeout”

if the Manager does not receive any response from the Agent within a pre-configured Timeout-period T0, and

a Procedure of storing “

requested data”

in a Network Information Store M1 if the Manager receives “

requested data”

, and

a Procedure of resending the request for the label-specified data at pre-configured Next-intervals Tn, till the Manager receives the data or the number of resends exceeds N (N is an integer greater than or equal to

     0) which is configured in advance if the Manager receives a response of “

no data”

, and

a Procedure of continuing to send requests for the label-specified data at pre-configured Next-intervals Tn, till it receives the data or the number of resends exceeds N (N is an integer greater than or equal to

     0) which is configured in advance, if the Manager detects “

Timeout”

.

13. A Network Management System, which is the Network Management System that a Manager gets the information related to network devices by polling Agents in wireless network environment, wherein the Manager is having

a Means-1 of detecting recovery of the connectivity after the connectivity between the Manager and the Agent is lost, and

a Means-2 of seamlessly collecting the information pertaining to the period of disconnection, which the Agent has stored, after detecting recovery of the connectivity, and detecting the reboot status of the Agent,

and the above-mentioned Means-2 is having a mechanism of collecting the information in the presence of a time lag between the Manager and the Agent.

14. The Network Management System according to claim 13, wherein the above-mentioned Agent is having

a Means of sampling the relevant probes for management information at pre-configured time intervals P′

,

appending appropriate label information to the sampled management information, and storing the labeled sampled information in a Management Information Store M2, and a Means of looking up the Management Information Store M2 for the label-specified data when the Agent receives a request from the Manager to deliver the label-specified data, and returning the data to the Manager, and

a Means of returning the message “

no data”

to the Manager, if the label-specified data is not found in the Management Information Store M2.

15. The Network Management System according to claim 13, wherein the above-mentioned Manager is having

a Means of detecting “

Timeout”

if the Manager does not receive any response from the Agent within a pre-configured Timeout-period T0, and

a Means of storing “

requested data”

in a Network Information Store M1 if the Manager receives “

requested data”

, and

a Means of resending the request for the label-specified data at pre-configured Next-intervals Tn, till the Manager receives the data or the number of resends exceeds N (N is an integer greater than or equal to 0 which is configured in advance if the Manager receives a response of “

no data”

, and

a Means of continuing to send requests for the label-specified data at pre-configured Next-intervals Tn, till it receives the data or the number of resends exceeds N (N is an integer greater than or equal to

     0) which is configured in advance, if the Manager detects “

Timeout”

.

16. A SNMP Network Management System, which is the SNMP Network Management System that a SNMP Manager gets the information related to network devices by polling SNMP Agents in wireless network environment, wherein the SNMP Manager is having

a Means-1 of detecting recovery of the connectivity after the connectivity between the SNMP Manager and the SNMP Agent is lost, and

a Means-2 of seamlessly collecting the information pertaining to the period of disconnection, which the SNMP Agent has stored, after detecting recovery of the connectivity, and detecting the reboot status of the SNMP Agent,

and the above-mentioned Means-2 is having a mechanism of collecting the information in the presence of a time lag between the SNMP Manager and the SNMP Agent.

17. The SNMP Network Management System according to claim 16, wherein the above-mentioned SNMP Agent is having

a Means of sampling the relevant probes for management information at pre-configured time intervals P′

, appending appropriate label information to the sampled management information, and storing the labeled sampled information in a Management Information Store M2, and

a Means of looking up the Management Information Store M2 for the label-specified data when the SNMP Agent receives a request from the SNMP Manager to deliver the label-specified data, and returning the data to the SNMP Manager, and

a Means of returning the message “

no data”

to the SNMP Manager, if the label-specified data is not found in the Management Information Store M2.

18. The SNMP Network Management System according to claim 16, wherein the above-mentioned SNMP Manager is having

a Means of sending the SNMP Agent a request for a label-specified data at pre-configured Polling-intervals P and receiving either “

requested data”

or “

no data”

from the SNMP Agent in response, and

a Means of detecting “

Timeout”

if the SNMP Manager does not receive any response from the SNMP Agent within a pre-configured Timeout-period T0, and

a Means of storing “

requested data”

in a Network Information Store M1 if the Manager receives “

requested data”

, and

a Means of resending the request for the label-specified data at pre-configured Next-intervals Tn, till the SNMP Manager receives the data or the number of resends exceeds N (N is an integer greater than or equal to 0 which is configured in advance if the SNMP Manager receives a response of “

no data”

, and

a Means of continuing to send requests for the label-specified data at pre-configured Next-intervals Tn, till it receives the data or the number of resends exceeds N (N is an integer greater than or equal to

     0) which is configured in advance, if the SNMP Manager detects “

Timeout”

.