Computer Networking: Computer Network
Planning And Desigining
1. Computer Network Planning
Computer network planning consists of the following steps:
1. Identifying the applications that you intend to use:
Computer networking may be required diverse environments
such as Enterprise Resource Management (ERM), Internet telephony,
Instant Messaging (IM), eMail and others. It is important
to discuss the applications that you intend to use such
as the above. These in turn are used for estimating the
software, hardware, and traffic requirements.
2. Traffic Requirements: Computing traffic requirements
include several factors. A few points to consider include
- Identification and documentation of major traffic
- Categorization of traffic as local, distributed,
client/server, peer-to-peer, terminal/host or server/server.
- Estimation of bandwidth requirements for each application.
- Quality of Service (QoS) requirements for each application
- Reliability requirements.
3. Scalability Requirements: Scalability refers to the
extent of network growth that should be supported. For corporate
network, scalability is a major consideration. Provision
must be made to add users, applications, additional sites,
and external network connections.
4. Geographical considerations: Consider the LAN and
WAN links that may be required. Offices that are separated
by large distance (for example one in Delhi and another
in New York) can be linked together by a WAN (Wide Area
Network) link. Similarly, building complexes within a compound
can be linked by a LAN (Local Area Network) link. Typically,
the LAN links are high bandwidth (10Mbps and above) and
WAN links are of lower bandwidth (64 Kbps - 2Mbps). Further,
the LANs fall within the premises of a Company whereas WANs
are typically leased and maintained by the Telecom. Hence,
WANs are costly in bandwidth terms and need to be planned
and designed with utmost care to minimize resource consumption.