Simple Network Management Protocol

Summary

Simple Network Management Protocol (SNMP) is an Internet Standard protocol for collecting and organizing information about managed devices on IP networks and for modifying that information to change device behaviour. Devices that typically support SNMP include cable modems, routers, switches, servers, workstations, printers, and more. SNMP is widely used in network management for network monitoring. SNMP exposes management data in the form of variables on the managed systems organized in a management information base (MIB), which describes the system status and configuration. These variables can then be remotely queried (and, in some circumstances, manipulated) by managing applications. Three significant versions of SNMP have been developed and deployed. SNMPv1 is the original version of the protocol. More recent versions, SNMPv2c and SNMPv3, feature improvements in performance, flexibility and security. SNMP is a component of the Internet Protocol Suite as defined by the Internet

Official source

https://en.wikipedia.org/wiki/Simple_Network_Management_Protocol

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Web-based management of IP networks and systems

Jean-Philippe Martin-Flatin

The management of IP networks and systems is currently based on the Simple Network Management Protocol (SNMP) and the SNMP management architecture. This poses a number of problems. Some are related to the efficiency, scalability, latency, and expressiveness of SNMP, others to the way the design of SNMP-based management platforms historically evolved. After reviewing the numerous alternatives that are currently investigated by the research community, including mobile code and intelligent agents, we propose to base the next generation of management applications on a new management architecture: WIMA, the Web-based Integrated Management Architecture. WIMA is based on standard Web technologies. It relies on a push-based organizational model for regular management (i.e., data collection –for offline processing– and monitoring over a long period of time) and notification/event delivery, and a pull-based organizational model for ad hoc management (data retrieval over a very short time period). Its communication model is characterized by (i) the use of persistent HTTP connections between agents and managers (or between mid- and top-level managers in distributed hierarchical management); (ii) the support for any information model (SNMP, CIM, etc.); and (iii) a reversed client-server architecture that facilitates crossing firewalls. In WIMA, the preferred method for representing management data in transit is XML. It is well suited for distributed hierarchical management; it unifies the communication model across the entire range of integrated management (that is, network, systems, application, service, and policy management); and it offers high-level semantics to the management-application designer. All the major problems that we identified in SNMP are solved in WIMA. Our architecture is validated by a prototype: JAMAP, the JAva MAnagement Platform.

EPFL2000

Over the past few years, network management has steadily evolved from a centralized model, where all the management processing takes place on a single network management station, to distributed models, where management is distributed over a number, potentially large, of nodes. Among distributed models, one, the weakly distributed hierarchical model, has been around for several years, whereas a flurry of new ones, based on mobile code, distributed objects or cooperative agents, have only recently emerged. Which of these techniques will eventually win ? Will several ones have to coexist ? How do they compare to each other ? In order to provide a framework to analyze these issues, this paper presents a comprehensive typology of all network management paradigms known to date, whether they have been successfully implemented already or whether they are still confined to the research community. By comparing these models with those used in another research field, enterprise management, we delineate a common trend of evolution, and attempt to predict what the future holds for network management. Keywords : Distributed Network Management, Organizational Models, Mobile Code, Management by Delegation, Distributed Objects, Intelligent Agents.

1997

A Simple Typology of Distributed Network Management Paradigms

Jean-Philippe Martin-Flatin

1997