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Computer Network Design Oz Assignments
Proposed Network Design and Implementation
In this forum various design methods are going to be analysed together with their effectiveness in implementing the network infrastructure in Assignment 4. First, it is important to understand the backbone behind a successful networked system. For a user to be able to access the availability of a secure network there has to be a well-structured and designed network system, a concept referred to as networking technologies approach. The hierarchical network design takes into account the fundamental concepts of the core, distribution and access. Besides the hierarchical network design, there are other recognized designs such as the flat design. Each of these designs has advantages and disadvantages over the other.
Pros and Cons of Hierarchical Network Design
Allows for scalability- it is possible for the growth and flexibility of a networked architectural design. For each module of the distribution layer you may opt to add as many access switches depending on the switch limit set. Enables grouping of devices in a networked system; many computing devices can be expanded in a hierarchical network approach.
Helps in facilitating manageability of local traffic as local networked devices remains local; for instance, if the network administrator decides to change a functionality of a switch in the access layer it becomes easier to change all the switches in that layer as the functionality is the same. All that is required is a repeat of the same in other switches in that layer (Cisco Systems, 2009).
The response time remains usable as traffic is well controlled. It is possible for redundancy by connecting an access switch to two distribution switches. So if one distribution switch fails it is possible to access the next distribution switch. Hence the network remains available.
- Hard to administer due to the complexity of the tree-structure network
Pros and Cons of Flat design
- There is reduced cost of maintenance, administration and architecture. Aims at reducing the number of switches and routers in a given network design.
- Serve as well networks in small businesses and homes.
- Are easier to maintain and administer, reason is being they use less hubs and switches.
It gives hackers a loophole to access certain parts of the network. As the traffic uses a single switch it becomes difficult to limit certain parts of the network, thus degrading the security of the network. There is a chance that the whole network will fail if the switch fails. Since the network is connected with one switch, providing no room for redundancy, if the switch fails then the network becomes in-accessible. Connecting the mobile data network with one switch will require use of hubs. Using hubs may cause data collision thus reducing speed and reducing the level of scalability.
Campus Area Network
A campus area network allows connection of multiple LANs and a wireless backbone.
Characteristics of a Campus Area Network
Incorporates a Local Area Network (LAN) that connects the network cables, switches and hubs in a networked building, It uses a flat network design. A backbone fiber optic or a high bandwidth wireless device such as a router is connected in each building to the main campus network. Network switches in each building may also be used to connect to other buildings (Cisco Systems, 2007). A gateway connects the campus area network to the outside wider network. The network supplying the campus may be a Wide Area Network or internet from a public domain.
According to the Task in Assignment 4, the Flat design is the recommended research methodology taking into account the importance and advantages of setting up a Campus Area Network. The Campus Area Network is highly recommended as it is less costly and it requires minimal maintenance and still it is easy to administer.