This paper deals with the very discussion of the physical and logical design of a network.
The first section is dedicated to lay the difference between the two designs with points of comparison.
The second section takes some illustrative examples to depict the very organization of the logical and physical design of a network.
The logical design of the network is the IP (Internet Protocol) framework of the network where the host machines or PCs are assigned an IP address for communication in the internet (Forouzan, 2003). In contrast, physical design is the underlying topology of the network, for example bus or star. The point of difference between the two is as follows:
· Definition: The physical and logical design of the network entails the IP framework part and the physical topology of the network.
· Communication: The communication in the logical design is based on the IP addresses and the subnet addresses. Using this addresses one is able to communicate with another host in the same network or another network or the internet. The communication in physical design is based on the physical addresses and it is constrained within the same network.
· Constituents: The traits of the logical design is in IP addresses which may belong to various classes named as class A, B, C and D having diverse characteristics and importance for communication (Forouzan, 2003). The physical design is based on the certain characteristics of the cabling and the internal organization of the network.
· Complexity: The logical design is concerned with the very nature of allocating an IP address for the particular host and the network in particular. It deals with purchasing a set of IP address from the authorized body for assigning it to their network and host machines. The physical design of the network is based on the physical addresses which are printed on the LAN card. The organization of the cabling, hubs and switches are designed for the communication purpose.
The logical design of the network is depicted below:
Figure 1 : Logical design of the network
Description of the logical design:
The above figure depicts the logical design and depicts the following features:
· The network is connected with the internet.
· It is connected with a firewall
· Every host or PC which is connected with the network bears an IP address or a set of addresses which is designed for the entire department.
· The IP addresses make sure that all the PCs are well connected with the network for communication.
· A network printer is also seen to be connected and bears an IP address.
The physical design of the network is depicted below:
Figure 2 : Physical design
Description of the physical design:
The above figure depicts the physical design and depicts the following features:
· The small network of a particular department of a home network where it is connected with the internet
· The physical design is the star network shown above where the hub (blue machine) connects physically with every device in the network so that they are able to cater to their requirements
· The association of various cables and devices are arranged in a physical design
Thus the difference is quite apparent with the above description of the difference and the two figures made it possible to define the purpose and make an impact to lay the difference.
The differences were carved out evenly and pictorial designs take up the illustration quite delicately.
References / Bibliography
Forouzan A. Behrouz (2003). TCP/IP Protocol Suite, second edition. Tata McGraw Hill.
Logical design. See http://www.edrawsoft.com/images/network/Ethernet-Lan-Full.png
Physical design. See http://www.edrawsoft.com/images/network/Home%20Network_Full.png