They interconnect individuals, support services and offer access to the things that keep the company running. To meet the everyday requirements of a modern company, networks are becoming more and more complex.
Net Requirements
Nowadays, the Internet-based businesses often demand 24 x 7 customer services. This simply means that corporate networks must be available nearly 100 percent of the time. They must be clever enough to automatically safeguard against unanticipated security events. Furthermore, these corporate networks should also be able to adjust to different traffic loads and keep steady application response times. It is no longer useful to build networks by connecting a lot of standalone appliances without careful planning and design.
Constructing a Good Network
Well-designed nets do not happen by chance. They are the effect, the outcome of hard effort by network designers and network specialists, who pinpoint network requirements and choose the best ways to meet the business's needs. Network users usually do not "see" the network complexity. They think of the net as a method to find and use the applications they need.
System Requirements
Most organizations have only a limited amount of requirements for their net. Let's study the most important.
The network should be available all the time, even in the event of hardware failures or overloaded conditions. The network must constantly deliver applications and offer realistic response times from any device to any device. The network must be secure. It must safeguard the data that is transferred over it, in addition to data kept on the equipment that connect to it.
The network must be straight forward to modify to adjust to network growth and overall business changes. Because disasters sometimes occur, troubleshooting must be stress-free. Finding and correcting a problem must be fast and fairly easy to do.
Important Design Goals
When studied wisely, these requirements convert into four major network design aims and goals: Scalability, Availability, Security and Manageability.
To meet those four important design goals, a net should be based on a design that allows for both flexibility and development.
Hierarchical Network Design
A hierarchical design in networking is used to group network appliances into several networks. The networks are structured in a layered approach. The hierarchical design has three elementary layers: The Core Layer that Connects Distribution Layer devices, the Distribution Layer that interconnects the smaller local networks and the Access Layer that provides connectivity for network hosts and end devices.
Manolis Skoras is a Cisco, Microsoft and HP Certified Trainer and systems-network engineer. Recently he created a CCNA exam answers website to help his students and people around the world to better understand the material they will be tested on, thus having greater success rates. Check Certify4Sure today!
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