Networking, Data Communication & Telecommunication

1. Network Management
service that employs a variety of tools,
applications, and devices to assist human
network managers in monitoring and
maintaining networks.

2. Network Management
Network management refers to a network engineer's
ability to manipulate his resources from a central
location, using the network itself as a communication
and configuration medium.

3. Network Management
Refers to the broad subject of managing
computer networks.
Exists a wide variety of software and hardware
products that help network system
administrators manage a network.

4. Network management covers a wide area:
* Security: Ensuring that the network is protected
from unauthorized users.
* Performance: Eliminating bottlenecks in the
network.
* Reliability: Making sure the network is available
to users and responding to hardware and
software malfunctions.

5. Network management
Network management refers to the
maintenance and administration of
computer networks and
telecommunications networks at the top level.
Network management is the execution of the
set of functions required for controlling,
planning, allocating, deploying, coordinating,
and monitoring the resources of a network.

6. In the past network management mainly
consisted of monitoring whether devices
were up or down;
today performance management has
become a crucial part of the IT team's role
which brings about a host of challenges --
especially for global organizations.

7. Network Monitoring
The term network monitoring describes the use
of a system that constantly monitors a computer
network for slow or failing systems and that
notifies the network administrator in case of
outages via email, pager or other alarms. It is a
subset of the functions involved in network
management.

8. Network Administrator
The terms network administrator, network
specialist and network analyst designate job
positions of engineers involved in
computer networks, the people who carry out
network administration.
Network administrators are basically the network
equivalent of system administrators: they
maintain the hardware and software that
comprises the network.

9. This normally includes the configuration,
maintenance and monitoring of active
network gear: switches, routers, firewalls,
etc.

10. Network administration commonly includes
activities such as network address
assignment, assignment of routing protocols
and routing table configuration as well as
configuration of authentication and
authorization.

11. It often includes maintenance of network facilities
in individual machines, such as drivers and
settings of personal computers as well as printers
and such.
It sometimes also includes maintenance of
certain network servers: file servers, VPN
gateways, intrusion detection systems, etc.

12. Network specialists and analysts
concentrate on the network design and
security, particularly troubleshooting and/or
debugging network-related problems.
Their work can also include the
maintenance of the network's authorization
infrastructure, as well as network backup
systems.

13. ISO Network Management Model
The ISO has contributed a great deal to
network standardization. Its network
management model is the primary means
for understanding the major functions of
network management systems. This model
consists of five conceptual areas.

14. ISO Network Management Model
 Performance Management
 Configuration Management
 Accounting Management
 Fault Management
 Security Management

15. Performance Management
The goal is to measure and make available various aspects
of network performance so that internetwork performance
can be maintained at an acceptable level. Examples of
performance variables that might be provided include
network throughput, user response times, and line utilization.
Performance management involves three main steps. First,
performance data is gathered on variables of interest to
network administrators.
Second, the data is analyzed to determine normal (baseline)
levels.
Finally, appropriate performance thresholds are determined
for each important variable so that exceeding these
thresholds indicates a network problem worthy of attention.

16. Configuration ManagementConfiguration Management
The goal ofThe goal of configuration managementconfiguration management is to monitoris to monitor
network and system configuration information so that thenetwork and system configuration information so that the
effects on network operation of various versions ofeffects on network operation of various versions of
hardware and software elements can be tracked andhardware and software elements can be tracked and
managed.managed.

17. An engineering workstation, for example, may beAn engineering workstation, for example, may be
configured as follows:configured as follows:
•• Operating system, Version 3.2Operating system, Version 3.2
•• TCP/IP software, Version 2.0TCP/IP software, Version 2.0
•• NetWare software, Version 4.1NetWare software, Version 4.1
•• X.25 software, Version 1.0X.25 software, Version 1.0
•• SNMP software, Version 3.1SNMP software, Version 3.1
Configuration management subsystems store thisConfiguration management subsystems store this
information in a database for easy access. When ainformation in a database for easy access. When a
problem occurs, this database can be searched for cluesproblem occurs, this database can be searched for clues
that may help solve the problem.that may help solve the problem.

18. Accounting Management
The goal of accounting management is to measure
network utilization parameters so that individual or group
uses on the network can be regulated appropriately.
Such regulation minimizes network problems (because
network resources can be apportioned based on
resource capacities) and maximizes the fairness of
network access across all users.

19. As with performance management, the first is to
measure utilization of all important network
resources.
Analysis of the results provides insight into current
usage patterns, and usage quotas can be set at this
point.
Some correction, of course, will be required to reach
optimal access practices.

20. 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. Because faults can cause downtime or
unacceptable network degradation, fault
management is perhaps the most widely
implemented of the ISO network management
elements.

21. Fault management involves first determining
symptoms and isolating the problem. Then the
problem is fixed and the solution is tested on all-
important subsystems. Finally, the detection and
resolution of the problem is recorded.

22. Security Management
The goal of is to control access to network resources
according to local guidelines so that the network cannot
be sabotaged and sensitive information cannot be
accessed by those without appropriate authorization.
A security management subsystem, for example, can
monitor users logging on to a network resource and can
refuse access to those who enter inappropriate access
codes.

23. Security management subsystems work by
partitioning network resources into authorized
and unauthorized areas.
E.g. access to Human Resource files, for
example, is inappropriate for most users outside
the Human Resources department.

24. Security management subsystems perform
several functions. They identify sensitive network
resources (including systems, files, and other
entities) and determine mappings between
sensitive network resources and user sets. They
also monitor access points to sensitive network
resources and log inappropriate access to
sensitive network resources.

25. List of network management systems
Advanced Host Monitor KS-SOFT
Advanced NVIEW A concept for business results. A new concept for
performance, fault and SLA's management.
AdventNet ManageEngine OpManager
Alcatel 5620 Network Manager & Service Aware Manager
Arena Network Manager from Sphere Networks, network discovery, active /
passive monitoring, fault management, notification, script execution.
Attachmate NetIQ AppManager & SecurityManager
AutoNOC Integrated, Automated Network Management
Blue Coat Proxy Servers for WAN Optimization and Web cache
Big Brother
BixData Performance, system, network and application
ByteSphere OidView Network Management Toolset and Expert System
CA Unicenter Network and Systems Management
Cacti- network statistics graphing tool.
CITTIO WatchTower Automated Network & Systems Monitoring

26. Caligare NetFlow monitoring, analyzing and anomalies detection
Cisco Active Network Abstraction A network resource management platform for
large networks
CiscoWorks Lan Management Solution Manages enterprise switching networks
Cisco Netwok Analysis Module Analyzes live network traffic
Comarch Comarch OSS Suite
Crannog Software
DataMiner Skyline Communications' multi-vendor network management system
for the HFC broadband, satellite, IPTV and broadcast industry
ECI Telecom LightSoft® Multidimensional Network Management System
Ericsson OSSRC - Operations Support System, Radio and Core
Foundry IronView Network management for Foundry devices.
Harris NetBoss Fault, Configuration, and Performance suite of applications.
Hewlett Packard OpenView framework
TTI Telecom Service Assurance, Netrac Product Lines
Hierarchical Network Management System by NASA
Hobbit
IBM AURORA Network Performance Profiling System

27. IBM Tivoli NetView
iMacros Browser-based monitoring system, Flash/Java applets performance
monitoring
Infosim Performance Management, Fault Management and Inventory
Management
Intellipool Network Monitor
IPCheck Server Monitor from Paessler AG
Just for Fun Network Management System
Lansweeper Free network inventory for windows
Lucent VitalSuite Network and Service Management Software
Lucent Navis® Optical Management System (OMS)
Microsoft Operations Manager (MOM)
Nagios open source application
Netdisco Web-based network management tool targeted at large corporate and
university networks.
NETMON Network Monitoring Appliance
NetQoS

28. Network Management:
Products and Services Cisco Systems
Routing and Switching Management (continued)
CiscoWorks LAN Management Solution Bundle
CiscoWorks Campus Manager
CiscoWorks CiscoView
CiscoWorks Common Services Software
CiscoWorks Device Fault Manager
CiscoWorks Internetwork Performance Monitor
CiscoWorks LAN Management Solution
CiscoWorks Resource Manager Essentials
CiscoWorks LAN Management Solution Extensions
CiscoWorks Interface Configuration Manager
Cisco Diagnostics Expert Products
Cisco MPLS Diagnostics Expert

29. Element Management Systems
Cisco 12000/10720 Router Manager
Cisco 7600 Router Manager
Cisco Catalyst Switch Manager
Cisco Element Manager System
Multicast Management
Cisco Multicast Manager
Cisco Route Manager
Programmatic Interfaces
Cisco Enhanced Device Interface
WAN Management
Cisco WAN Manager
Cisco Subscriber Edge Services Manager
CiscoWorks Small Network Management Solution
Cisco Configuration Engine
Cisco Netflow Collection Engine
Cisco Network Assistant
Cisco Notification Engine
Cisco Performance Engine