Role of protocols at different layers of the osi model
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Reasons for having layered Protocols:
The process of establishing a link between two devices to communication and share information is complex. There are many functions which are to be taken into considerations to enable effective communication. To organize all these functions into a coherent form the designers felt the need to develop network architecture. In the network architecture the communication functions are grouped into related and manageable sets called LAYERS. A network architecture refers to a set of protocols that tell how every layer is function.
The reasons and advantages of using the network architecture are as follows: - It simplifies the design process as the functions of each layers and their interactions are well defined. - The layered architecture provides flexibility to modify and develop network services. - The number of layers, name of layers and the tasks assigned to them may change from network to network. But for all the networks, always the lower layer offers certain services to its upper layer. - The concept of layered architecture redefines the way of convincing networks. This leads to a considerable cost savings and managerial benefits. - Addition of new services and management of network infrastructure become easy. - Due to segmentation, it is possible to break complex problems into smaller and more manageable pieces. - Logical segmentation helps development taking place by different terms.
The process of establishing a link between two devices to communication and share information is complex. There are many functions which are to be taken into considerations to enable effective communication. To organize all these functions into a coherent form the designers felt the need to develop network architecture. In the network architecture the communication functions are grouped into related and manageable sets called LAYERS. A network architecture refers to a set of protocols that tell how every layer is function.
The reasons and advantages of using the network architecture are as follows: - It simplifies the design process as the functions of each layers and their interactions are well defined. - The layered architecture provides flexibility to modify and develop network services. - The number of layers, name of layers and the tasks assigned to them may change from network to network. But for all the networks, always the lower layer offers certain services to its upper layer. - The concept of layered architecture redefines the way of convincing networks. This leads to a considerable cost savings and managerial benefits. - Addition of new services and management of network infrastructure become easy. - Due to segmentation, it is possible to break complex problems into smaller and more manageable pieces. - Logical segmentation helps development taking place by different terms.
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