Explain the issue of mobility and reliability with suitable example in network design.
Answers
LAN Design (1.1)
Hiring managers want networking professionals, even entry level ones, to be able to design a LAN. Why is this so important? If someone knows how to design something, it means that person knows and understands the components that comprise the object. By knowing how to design a LAN, a network professional knows the network components and how those components interact with one another. The professional would also know what products to buy to expand the network.
Converged Networks (1.1.1)
The words converged network can mean several things to a network engineer: (1) a single network designed to handle voice, video, and data; (2) an internal network where the Layer 3 devices, such as routers, have a complete routing table to be able to accurately and efficiently send data to a remote destination; and (3) a switch network that has completed calculations that result in a single path through the switch network. In this chapter, we explore the first description.
Growing Complexity of Networks (1.1.1.1)
Our digital world is changing. The ability to access the Internet and the corporate network is no longer confined to physical offices, geographic locations, or time zones. In today’s globalized workplace, employees can access resources from anywhere in the world and information must be available at any time, and on any device. These requirements drive the need to build next-generation networks that are secure, reliable, and highly available.
These next generation networks must not only support current expectations and equipment, but must also be able to integrate legacy platforms. Figure 1-1 shows some common legacy devices that must often be incorporated into network design. Figure 1-2 illustrates some of the newer platforms (converged networks) that help to provide access to the network anytime, anywhere, and on any device.