How to design a network is part of the Network Design Methodology.

The following eight steps design methodology can be used to design a network.There is a complete procedure for designing a network.

To get customer requirements, you need to communicate with network engineers, business unit personnel and company managers.Directory talking to customer can be used to identify customer requirements.You need to identify customer requirements as a network designer.

You need to identify current and planned applications in order to develop a network design.Is email more important than customer support?Is it necessary to have VOIP services?

List the applications required for the organization.You need to find out which network applications need high availability and high bandwidth and prepare a plan for them.

You need to define an application for different required services such as email, exchange server and outlook at client end, for collaboration and voice services, and also same for other service like web browsing, filesharing and database.To find out the Business importance of different applications, you have to label them as critical, important, or unimportant.Email may be a critical application as compared to instant messaging.Other network services include security, quality of service (QoS), network management, high availability, unified communications, and mobility.

You should identify whether the company’s goal is to improve customer support, add new customer services, increase competitiveness, or reduce costs.Some of the goals may be more important than others.There are some organizational goals.

Organizational constraints and limitations include cost, personnel, policy, and time limitations.You may be given a budget or a time frame to complete the project if the organization has limitations related to cost.The organization might want the project to be completed quickly.It might have limited personnel to support the assessment and design efforts.HIPPA certification and requirements can cause an organization to have different policies and levels of security.

The organization has objectives and supported applications.There are some technical goals.

Different technical constraints might affect network design.Legacy applications need a legacy protocol that may limit a design in order to be supported going forward.Low bandwidth might not support new applications because of technical constraints.You need to find all the technical constraints against each other.

The second step of the network design methodology is characterizing the existing network.The infrastructure and services that are currently running need to be identified in this step.You can use different tools to analyze network traffic.All the documentation related to the current network are a great source of information for describing the existing network.Sometimes there is no documented information.You should be prepared to use different tools to get the information you want.The steps for gathering information are listed.

You can perform a network audit with the help of existing documentation, network management software tools, and some other tools.You can get models and components from the tools the client already has.You can get the switchconfigurations.The network audit should give you the network device list, hardware models, versions of software, configuration of network devices, interface speeds, link,CPU, bandwidth and memory utilization.For larger networks, a manual assessment is more time-Consuming than a physical judgement.The use of commands to find the configuration of different devices is included in the manual assessment.There are some examples of show commands.

The network is mapped and the versions and configurations are collected.

Network-Based Application Recognition is part of the Content Networking platform for implementing intelligent network services like available resources are utilized as efficiently as possible.

AirMagnet Survey PRO is one of the third-party tools.

You can use different analysis tools and software for application-level information.The following are network analysis tools.

Sniffer, AirMagnetWifi Analyzer, and NetIQ are third-party tools.

You need to prepare the network solution for the organization in this section of the design methodology.The best approach to design the network is the structure approach which allows you to develop the optimal solution with lower cost and fulfill all requirements of the customer.The network solution includes things likeWAN technologies, LAN services and all devices.

The top-down approach can be used to design the network solution.A top-down approach is used in the Design phase, which begins with the organization’s requirements.Before moving into the phase, a pilot or prototype network is used.Start your design from the top layer of the OSI model and work your way down.The network and physical infrastructure are adapted to the needs of the application.Network devices and technologies are not selected until requirements are analyzed.

The plan the network implementation involves a good degree of documentation, diagram and other related material.You should have the step-by-step procedure of each aspect of the modular network in the documentation.If something goes wrong, you can back to the previous step and modify it again.Project managers can be included in the network implementation plan to define the time frame for each step.The test should be included at every step in the process.The better understanding and easy implementation of complex procedures can be achieved by breaking them into small chunks.

It is a good practice to test the new solution before the full implementation when you finish a new module of network or deploy the design to small site.Prototype orpilot is one of the ways this testing can be done.

A prototype network is a subset of the full design.The existing network does not connect to theprototype.The benefit of using a prototype is that it allows testing of the network design before it is deployed.You might want to use a prototype test before you deploy a new technology.

A pilot site is an actual live location that serves as a test site before the solution is deployed.A pilot allows real-world problems to be discovered before a network design solution is deployed to the rest of the internetwork.

Successful testing leads to proving the design and moving forward with implementation.The tests are repeated to correct any deficiencies after a failure.

The network architects and analysts use it to document the new network changes, and it serves as documentation for the enterprise.The standard process for creating a network design document can be followed.The procedure includes the introduction of project, designing requirement, detail about the existing network, design, proof of concepts, implementation of plan and appendixes.Each document module has a short description.

The reasons for the network design are described in the introduction.

Existing Network Infrastructure includes a list of network routers, switches, and other devices, as well as a description of issues.

Network Design has specific design information such as logical and physical topology, network diagrams, IP addressing, and security configurations.

The new installation and changes are included in the Implementation Plan.

There is a list of exiting network devices in the appendix.

The network engineer is in the implementation phase.The network engineer implements the documented steps into the real network.

The first six steps of the eight step design model are related to the CCDA and where you have to design and document the project.Window.adsbygoogle is a window.

You have to monitor the network devices, traffic and other security aspects once your network is fully implemented.If you find something wrong with network operation, you can modify it.You can add more services and features if you need them.Window.adsbygoogle is a window.