Network design

Network Design Overview: Is This IT Career Right For You?

As computer networks evolve, erectile the need for skilled network designers is increasing. Do you have what it takes to make your mark in this career field?

Networking is the important practice of interfacing with individuals and groups through regular communication. It involves building relationships with people who can help each other in different areas, including personal life and professional careers. It is important to develop networking skills to increase your business and personal opportunities.

While social networking is a key activity in life, computer networks are essential for computer communication systems. This is how we communicate with each other through our various computer systems. All end-to-end connectivity between two computer systems goes through network devices. For this reason, network engineers are critical assets in any IT-powered organization.

With the increased dependence on network infrastructure and the rapid evolution of technology, the career in networking has evolved over the years. Computer network design is a computer network specialization in high demand in today’s market.

What is network design?

The first step in building a network infrastructure is to design it. The design process is often complex and involves multiple calculations to correctly determine the capacity required to meet the data traffic requirements of an organization. Network design is the integration of different network devices to achieve end-to-end communication between network hosts. There are certain requirements that are common in today’s networks, such as high levels of availability, performance, reliability, and low latency, all of which are essential for a great customer experience.

The result of the design process is usually a detailed network topology and a design document called a low-level design document (LLD) that contains detailed information about the network infrastructure, such as IP addressing and configuration of the network. ‘device.

What do network designers do?

Designers design networks through a series of well-planned and executed steps. The process begins with collecting customer requirements. Customers can be internal, such as employees within a company, or external: external customers who want network infrastructure for a company’s users and servers. Collecting requirements is critical because the network designer will size the network according to the specified requirements.

For example, if there is an email server that serves company employees, a network designer will need to allocate adequate network bandwidth for email traffic. The number of simultaneous connections to the server is multiplied by the bandwidth of the session, resulting in the total bandwidth required. Any error in these calculations or in the collection of data can lead to network saturation via e-mail traffic which negatively impacts other applications.

The design must also take into account future planned and feasible expansions of the current infrastructure. Planning for future growth is much less expensive than building a new network to handle the increased traffic.

The second step in the design process is to select the appropriate devices and equipment to effectively meet the identified network requirements. This step is highly dependent on the experience level of the designer. This usually involves researching many available suppliers and studying equipment data sheets to ensure that you purchase the right devices for your needs.

Network guy fiddles with cablesThe last step in the design is to purchase and implement the various network devices. The responsibilities of a network designer at this stage will depend on their role within the organization. For small or medium-sized businesses, it’s common for a designer to take care of all purchasing and installation tasks. In large organizations, different teams of designers may be assigned specific tasks. Whatever the situation, the network designer must oversee these tasks to ensure that the right equipment is purchased and implemented according to the design plan.

Importance of designer skills

Network design is a mixture of knowledge, experience and skills. The knowledge and experience of a designer is essential when selecting from the variety of suppliers and equipment available. Designer skills help integrate infrastructure components together to build an effective and efficient network. It is the designer’s skill in choosing the right design to meet the requirements of the network that sets one designer apart from another.

Different network designs can meet the same requirements, but can differ significantly in cost and efficiency. This can lead to underutilization of a network, resulting in wasted money and resources. Designer skills are an important factor and they develop over the years. The knowledge part is easier to acquire and will be discussed below.

Evolution of employment

For many years the IT industry has evolved from consolidation to segregation and now back to consolidation. During the first period of adoption of information technology in the world, the relatively small size and scale of systems naturally consolidated the role of technology gurus: IT administrators simply managed the various computer systems of the world. ‘an organization.

With the evolution and widespread use of IT, it has become necessary to separate responsibilities in order to achieve efficiency. Companies had different administrators for each of their different systems. This has led to a number of new titles and responsibilities including: Windows administrator, network administrator, security administrator, storage administrator, etc.

With the recent adoption of cloud technology, consolidation of IT administration responsibilities is once again evident and mandatory. The automation of IT systems provisioning and deep integration between infrastructure layers enables the introduction of cloud engineers with multi-faceted responsibilities. This also applies to network designers who are now exposed to computer systems other than networks. In addition, the dynamic nature of the required network resources puts increased pressure on network designers to design an agile and flexible infrastructure.

Impact of the Internet of Things

The The Internet of Things (IoT) is another revolutionary trend in computing that is raising the bar for network infrastructure requirements. With the goal of connecting everything in our lives to the Internet, the need for a reliable, highly available, scalable and agile infrastructure is now a necessity.

This required level of automation and flexibility puts increased pressure on system vendors and infrastructure professionals. Interactions between multiple infrastructure components to fulfill the IoT dream requires a more consolidated skill set of infrastructure professionals. Successful network designers will make a point of keeping abreast of new technologies and preparing for their deployment on the market.

Cisco Design Certificates for Network Professionals

Looks on the networkFor years, Cisco has adopted the strategy of providing learning resources for networking professionals to increase interest in Cisco products. Their certification programs have proven to be one of the best resources for learning network technologies.

A Cisco certification track is the network design in which Cisco offers four certifications:

Cisco Certified Design Associate (CCDA): An entry-level certificate for network design engineers verifying that they can design backbone networks for campuses, data centers, security, voice, and wireless networks. The CCDA is recommended for engineers starting a career in network design.

Cisco Certified Design Professional (CCDP): Intended for senior engineers with network experience who need to increase their design knowledge. CCDP engineers can create advanced designs to more complex requirements.

Cisco Certified Design Expert (CCDE): For expert level network design engineers who interact with the business side of an organization and can coordinate business needs with budget and operational constraints in network design by integrating different components. The CCDE provides network design professionals with an in-depth level of technical network knowledge.

Cisco Certified Architect (CCAr): for seasoned network infrastructure architects who create technical specifications for a network to support organizational goals. CCARs have a solid understanding and understanding of business strategy and are able to translate it into technical infrastructure requirements.

Although the four certification programs are very competitive, the CCDA and CCDP are the most commonly obtained certifications and are recommended for network design engineers new to the field. Whether or not one decides to pursue CCDE and CCAr certifications is a decision that should be carefully assessed against an organization’s goals and career goals.


Ahmed Badr is a network consultant with over 10 years of experience in the design, implementation and operation of large-scale network infrastructures. He holds a bachelor’s degree in communication and another in electronic engineering, as well as a master’s degree in business administration. He also holds a CCIE certificate in Routing and Switching since 2008. Ahmed can be contacted at: This e-mail address is protected from spam. You need JavaScript enabled to view it..

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