Distributed chassis agent for distributed network management

• US 5,812,771 A
• Filed: 05/10/1996
• Issued: 09/22/1998
• Est. Priority Date: 01/28/1994
• Status: Expired due to Term

• Current Assignee: Enterasys Networks Incorporated (Extreme Networks, Inc.)
• Original Assignee: Cabletron Systems Incorporated (Extreme Networks, Inc.)
• Inventors: Fee, Brendan, Dobbins, Kurt, Arneson, Dave, Mullaney, Pat
• Primary Examiner(s): Geckil, Mehmet B.
• Application Number:
  US08/644,330
• Time in Patent Office: 865 Days
• Field of Search: 395/800, 395/200.03, 395/200.31, 395/200.32, 395/200.33
• US Class Current: 709/201
• CPC Class Codes: H04L 41/0213 Standardised network management protocols, e.g. simple network management protocol [SNMP]
• CPC Class Codes: H04L 41/042 comprising distributed management centres cooperatively managing the network
• CPC Class Codes: H04L 41/046 comprising network management agents or mobile agents therefor
• CPC Class Codes: H04L 41/24 using dedicated network management hardware
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

An apparatus and method for allocating the performance of applications in a networking chassis among one or more modules in the chassis. In particular, the system acts as a chassis agent for performing network management functions. The agent performs a discovery function whereby each module discovers the location and current utilization of resources and applications for itself and transmits that information to other modules, and wherein each module maintains a slot table of such information for all modules. Based on the information in the slot table, each module performs an election function for allocating applications among the various modules in the chassis. The agent uses MIBs to gather information about the chassis and to effect control on the chassis, wherein each managed object is registered both locally and remotely in a MIB tree maintained on each module, and the data is maintained locally on the module on which the managed object resides. The system enables the chassis to be managed "as a whole" while the management functions are distributed across the system, and the system is both fault tolerant and enables ready expansion and modification of the management applications.

Claims

1. A method comprising steps of:

providing a plurality of network modules executing a distributed application; and

providing a single agent address for accessing the distributed application, wherein the agent address is a combination of a chassis IP network address and a chassis MAC address.

2. The method of claim 1, wherein:

each network module executing the distributed application listens for packets having the agent address.

3. The method of claim 2, wherein:

the modules are disposed in slots of a chassis and the application is a network management application which enables the chassis to be managed as a whole.

4. The method of claim 1, wherein:

each module exchanges module information which includes one or more of;

resources of the respective module,

applications of the respective module, and

availability of resources; and

each module elects, based on the module information, which of the modules will execute the distributed application.