Distributed configuration management on a network

• US 20020099787A1
• Filed: 07/30/2001
• Published: 07/25/2002
• Est. Priority Date: 01/12/2001
• Status: Abandoned Application

• Current Assignee: 3Com Corporation (HP Inc.)
• Original Assignee: 3Com Corporation (HP Inc.)
• Inventors: Bonner, Brett B., Taylor, Grant S.
• Application Number:
  US09/918,876
• Publication Number:
  US 20020099787A1
• Time in Patent Office: Days
• US Class Current: 709/216
• CPC Class Codes: H04L 41/042 comprising distributed management centres cooperatively managing the network
• CPC Class Codes: H04L 41/0846 based on copy from other elements
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 67/34 involving the movement of software or configuration parameters network booting or remote initial program loading [RIPL] G06F9/4416
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

A method and system for distributed configuration management of a network. A plurality of nodes within the network each includes a database which collectively comprise a distributed database. When a node needs to store network configuration information it stores the information within its local database storage portion and transmits the information over the network for storage in at least one other peer node that utilizes the information. Each peer node stores the information within its local portion of the distributed database upon receipt. The transmitting node awaits an acknowledgement that the information has been stored by a peer. In the event no acknowledgement is received, the node retransmits the information for storage using a second command and the information is stored in other nodes whether or not they are peers of the transmitting node. In this manner, network configuration information is stored in at least two nodes within the network. The stored configuration information is retrievable by any of the nodes and is updated by each node in accordance with a defined update protocol to maintain the most current information.

Claims

1. A system for distributing network management information comprising:

a plurality of network devices, each of said plurality of network devices communicably coupled to at least one other one of said plurality of network devices via a network, each one of said plurality of network devices including a local database, wherein said local databases in said plurality of network devices collectively comprise a distributed database;

a first one of said plurality said network devices operative to store predetermined network configuration information and an associated timestamp in its local database and being further operative to transmit a first message including said predetermined network configuration information and said timestamp over said network for storage in at least one other local database in another one of said network devices; and

at least one network device other than said first one of said plurality of network devices being operative to receive said predetermined network configuration information and to store said information within its respective local database.

2. The system of claim 1 wherein said at least one network device other than said first one of said plurality of network devices is further operative to transmit a second message over said network indicating that it has stored the predetermined network configuration information within its local database.

3. The system of claim 1 wherein said at least one network device other than said first one of said plurality of network devices is operative to store said predetermined network configuration within its local database only if it has at least one predetermined characteristic in common with said first one of said network devices.

4. The system of claim 3 wherein said at least one network device other than said first one of said plurality of network devices is further operative to transmit a second message over said network indicating that it has stored the predetermined network configuration information within its local database.

5. The system of claim 4 wherein said first one of said plurality of network devices is further operative to transmit a third message to said other ones of said network devices requesting that the predetermined network configuration information be stored within each recipients local database in the event said first one of said network devices does not receive said second message within a predetermined interval following transmission of said first message, wherein said third message comprises a request to store the predetermined network configuration information within the local database of each one of said network device that receives the third message irrespective of whether the respective receiving network device has said at least one predetermined characteristic in common with said first one of said plurality of network devices.

6. The system of claim 1 wherein a second one of said network devices being operative to transmit a retrieval request over said network for retrieval of said predetermined network configuration, wherein at least one of said network devices that include said network management information within its respective local database is operative in response to said request to transmit said network management information and the associated timestamp over said network to said other ones of said network devices.

7. The system of claim 1 wherein at least one of said network devices other than said first one of said network devices is operative to store in the respective local database said predetermined network configuration information received at the respective network device in the event:

(a) said network management information received at the respective network device is not included within the database for that network device;

or

(b) a version of the information received at the respective network device is included within the database for the receiving network device but the timestamp for the received information is more recent than the timestamp for said version stored at said receiving device.

8. The system of claim 1 wherein at least one of said network devices other than said first one of said network devices is operative to:

identify whether the respective network device is storing a version of the predetermined network configuration information within its respective local database; and

in the event the respective network device is storing a version of the predetermined network configuration information within its local database;

(a) store in the local database the received predetermined network configuration information in the event the timestamp associated with the received predetermined network configuration information is more recent than the timestamp associated with the corresponding predetermined network configuration information within the local database; and

(b) transmit for receipt by said other ones of said network devices an update message that includes the predetermined network configuration information and the associated timestamp contained within the local database in the event the timestamp associated with the predetermined network configuration information stored within the local database is more recent than the timestamp associated with the received predetermined network configuration information.

9. The system of claim 1 wherein said first message includes a key and a value wherein said key comprises an identify a parameter and said value comprises data associated with said parameter.

10. A method for maintaining network configuration information comprising the steps of:

including a local database in each one of a plurality of communicably coupled network devices, wherein said local databases in said network devices collectively comprise a distributed database;

at a first one of said network devices, storing predetermined network configuration information and an associated timestamp within the respective local database and transmitting a first message including said predetermined network configuration information for receipt by at least one other network device; and

storing said predetermined network configuration information and said timestamp in the local database of each one of said other network devices in the event the respective network devices have a message parameter that is common to a corresponding message parameter within said first one of said network devices.

11. The method of claim 10 further including the step of communicating a confirmation message from at least one of said other network devices to said first one of said plurality of network devices upon storage of said predetermined network configuration information within the respective local database.

12. The method of claim 10 further including the steps of:

issuing a retrieval request from a second one of said plurality of network devices to said distributed database for retrieval of said predetermined network configuration information; and

in response to receipt of said request at at least one of said other network devices that is storing the predetermined network configuration information within its local database, transmitting said information and the associated timestamp over said network.

13. The method of claim 12 further including the step of storing said information transmitted over said network and received at at least one of said other network devices on the respective local database in the event (a) said information received at the respective network device is not included within the local database for the respective network device;

or (b) information corresponding to said predetermined network configuration is stored within the local database for the receiving network device but the timestamp for the received information is more recent than the timestamp for the corresponding predetermined network configuration information stored within the respective local database.

14. The method of claim 13 wherein said storing step is performed only if a parameter identifier within the local database corresponds to a parameter identifier within said first one of said network devices.

15. The method of claim 10 wherein said first message includes a memory designator attribute having one of a first state and a second state, said local database within each network device includes a non-volatile memory portion and a volatile memory portion and said storing step includes the steps of storing said predetermined network configuration information in said non-volatile memory portion of said local database in the event said memory designator attribute is of said first state and storing said predetermined network configuration in said volatile memory portion of said local database in the event said memory designator attribute is of said second state.

16. A system for maintaining network configuration information comprising:

means for storing information in a local database in each one of a plurality of communicably coupled network devices wherein said local databases in said network devices collectively comprise a distributed database;

at a first one of said network devices, means for storing predetermined network configuration information and an associated timestamp within the respective local database and transmitting a first message including said predetermined network configuration information for receipt by at least one other network device; and

means for storing said predetermined network configuration information and said timestamp in the local database of each one of said other network devices in the event the respective network devices have a message parameter that is common to a corresponding message parameter within said first one of said network devices.