Network Management System
Network Management Systems (NMS)
Network Management System is defined as the collection of tools that assist human network managers in planning, configuring, controlling and monitoring the computer networks. It covers all the activities and safety measures needed to ensure the effective and efficient use of the resources to be managed. Thus, a Network Management System has to address different functional areas of a computer network and has to fulfill the requirements of the users in these areas.
The International Standards Organization (ISO) has defined and categorized functional areas “Management Functional Areas” of a network management system as follows. 1. Fault Management 2. Performance Management 3. Configuration Management 4. Accounting Management 5. Security Management
Fault Management
“The goal of fault management is to detect, log, notify users of, and (to the extent possible) automatically fix network problems to keep the network running effectively.”
Fault management involves: • Determine exact fault location. • Isolate the faulty area from the other working side. • Repair or replace the faulty device. • Fault logging.
Performance Management
ISO defined the Performance Management as.
“The goal of performance management is to measure and make available various aspects of network performance so that inter-network performance can be maintained at an acceptable level.”[2]
Examples of performance variables that might be provided include network throughput, user response times, and line utilization.
SNMP Overview
The Simple Network Management Protocol (SNMP) is an application layer protocol that facilitates the exchange of management information between network devices. It is part of the Transmission Control Protocol/Internet Protocol (TCP/IP) protocol suite. SNMP enables network administrators to manage network performance, find and solve network problems, and plan for network growth.
This chapter briefly
Network Management System is defined as the collection of tools that assist human network managers in planning, configuring, controlling and monitoring the computer networks. It covers all the activities and safety measures needed to ensure the effective and efficient use of the resources to be managed. Thus, a Network Management System has to address different functional areas of a computer network and has to fulfill the requirements of the users in these areas.
The International Standards Organization (ISO) has defined and categorized functional areas “Management Functional Areas” of a network management system as follows. 1. Fault Management 2. Performance Management 3. Configuration Management 4. Accounting Management 5. Security Management
Fault Management
“The goal of fault management is to detect, log, notify users of, and (to the extent possible) automatically fix network problems to keep the network running effectively.”
Fault management involves: • Determine exact fault location. • Isolate the faulty area from the other working side. • Repair or replace the faulty device. • Fault logging.
Performance Management
ISO defined the Performance Management as.
“The goal of performance management is to measure and make available various aspects of network performance so that inter-network performance can be maintained at an acceptable level.”[2]
Examples of performance variables that might be provided include network throughput, user response times, and line utilization.
SNMP Overview
The Simple Network Management Protocol (SNMP) is an application layer protocol that facilitates the exchange of management information between network devices. It is part of the Transmission Control Protocol/Internet Protocol (TCP/IP) protocol suite. SNMP enables network administrators to manage network performance, find and solve network problems, and plan for network growth.
This chapter briefly
References: [1] Network Management Basics available as http://library.ucsd.edu/~nsu/55018.htm [3] Traceroute - Whitepaper http://www.informatik.uni-trier.de/~smith/networks/tspec.html#INTRO [4] Simple Network Management Protocol available as http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/snmp.htm#xtocid17 [5] Naming in SNMP available as http://www.cs.tcd.ie/Greg.Biegel/nds106/SNMP.html [6] The MIB II structure available as http://www.et.put.poznan.pl/snmp/mib2 [8] For all MIB object names and their OIDs http://www.mibdepot.com/index.shtml