TCP/IP Networking

This document discusses different network design methodologies including PPDIOO, Eight Step Design Methodology, and Cisco Three Layer Model. It explores the pros and cons of each methodology and justifies the selection of PPDIOO for network design.

Running head: TCP/IP NETWORKING
TCP/IP Networking
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Research on Network Design:
Currently the concept of network designing is becoming more complex. Different types
of networks requires different types of network design methodology. Some important network
design methodology that can be utilized are the PPDIOO, Eight Step Design Methodology and
Cisco three layer model.
PPDIOO:
PPDIOO is the full form of Prepare, Plan, Design, Implement, Operate, and Optimize
which is a typical type of network cycle and this is defined by Cisco. The main steps of the
PPDIOO are prepare, plan, design, implement, operate, and optimize sequentially (Hernandez &
Jimenez, 2018). The main pros of PPDIOO is that it is capable of lowering the total cost of
ownership and availability of the network is also improved in this case. Main con is that it is very
much time consuming process.
Eight Step Design Methodology:
To build a complete network solution by following a given requirement eight step design
methodology can be utilized. This step will be consisting complete procedure and detail
regarding designing of the network. The main steps related with the eight step methodology are
the customer needs recognition, existing network description, network and topology solution
design, network implementation planning, network prototype construction, documenting the
design, implementation of the design and verification and monitoring of the network (Chou,
Baker & Vega-Herrera, 2016). The main pros of this type of methodology is that network can be
designed by following a given requirement properly. The main con is that creating network
design by following this type of methodology is quite complex.

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Cisco Three Layer Model:
The network design methodology of cisco three layer can be considered as basic
foundation for creating larger and smaller networks. By using this network design methodology
hierarchal network can be divided into three parts for the designing purposes. These three layers
are the core layer, access layer and distribution layer (McMillan, 2015). The main pros of this
type of network design methodology is that it provides flexibility within the network by
providing there layers of distribution where each of the layer is mapped with the physical
implementation and is having own functionality and features. The main con is that FHRP
protocol cannot be utilized.
Justification:
In this case for the network design purpose the PPDIOO methodology has been chosen.
This network design methodology has been chosen in this case as the network need to be
prepared from the initial stages of the development process. PPDIOO methodology is
appropriate as it defines all the important steps for the network design, so PPDIOO has been
chosen in this context.

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References:
Chou, T. S., Baker, S., & Vega-Herrera, M. (2016, June). A comparison of network simulation
and emulation virtualization tools. In Proc. ASEE Annu. Conf. Expo. (pp. 1-9).
Hernandez, L., & Jimenez, G. (2018, April). Design and Validation of a Scheme of Infrastructure
of Servers, under the PPDIOO Methodology, in the University Institution-ITSA.
In Computer Science On-line Conference (pp. 367-379). Springer, Cham.
McMillan, T. (2015). Cisco networking essentials. John Wiley & Sons.