After the advent of the World Wide Web by Tim Berners-Lee, the search for speedy connectivity to documents over the virtual library otherwise known as the internet became intensified. The world progressed from the stringent use of the Local Area Network and then evolved to the Wide Area Network. To a lay man, a WAN sounds foreign, its inception dates back to the early 1970s and 1980s; the internet savvy era. Some would say that a Wide Area Network is an acronym of the unknown or a computer tech related term. Yes in fact, it is a computer tech related term and it is widely used by the world. A WAN is otherwise known as Wide Area Network that navigates a communal network using switches and routers over a geographical territory. Without the help of the Wide Area Network, it would be difficult to connect to realities beyond common human relations. There remains a world beyond our society; it exists as a mainframe on the World Wide Web. It is the job of a WAN to aid connectivity and permanence. The word “wide” denotes a large coverage meaning, a WAN is not limited to a community of students in a local school but it extends to the world at large. A Wide Area Network centralises industrial infrastucture. It cuts cost and helps to increase gain; it also boosts privacy.
The core gears in the wide area network are divided into the hardware and the software division. Under the hardware division there are a large number of subset components found in the wide area network. They include: A router, a switch and a modem. Here are some simple and concise explanations for these terms Router: is a distinct device that unites the local area network and the wide area network together electronically steering the messages between the two networks. It is identified with the layer three formation that elicit decision making for the IP address Switch: it can be described as the pathway through which data is sent to its designation through the use of a MAC address. It is operated on the layer two Modem: it is also known as a modulator demodulator; it allows for the connection and the communication between a computer and telephone lines. It is traversed in a layer one with data signals transmitting from digital to analogue
The wide area network works simultaneously under the OSI model which is the layer one and three. They both serve as data linkers and physical linkers respectively; the data linker supervises over the transmission of data while the physical linker is interested in the physical, mechanical and functional services. A wide area network functions due to the various switches and main components. Here is a free ticket to some definition of the concepts that conceptualised what we know as a WAN: Circuit and Packet switching: Packet works better than the circuit switching; it is stress free and easy to use. On the other hand, the circuit switching is archaic and slow, amidst all the disadvantages it is still reliable in sending data across. As mentioned above routing basically is steering and ensuring communication between networks. It is the decision of how to gravitate packets (the common used switch) from one network to the other. So what are the general routing issues? The protocols involved in ensuring such communication? A routing protocol is a protocol that indicates the communication and proper exchange of data from networks to another. Routers are generally used to adapt to the changes in network and also stabilise the communication. A Routing information protocol (RIP) is a most consistently used protocol; it is internally functionalised to render a network useless. How ironic is an RIP? REST IN PEACE in literal terms. Routing algorithms are seen in the eyes of a distance vector, a link state and an IGRP. What do these terms contexts? A distance vector is also known as the Bellman Ford algorithm; it is a protocol that necessitates that each router notifies its neighbours of its routing table. A link state also known as the Diastral algorithm; this routing protocol states that each router sustains a partial map of the network An IGRP simply is an invention by Cisco; it is a distance vector protocol that exchange routing of data to an autonomous system. It measures distances and compares routes. Due to the fact that it makes use of a distance vector protocol must transmit all their routing tables to update regular messages to the neighbouring network.