Chapter 10 Planning and Cabling Networks

 Chapter 10 Planning and Cabling Networks

                As we discussed earlier the physical layer of the OSI model and the Ethernet in  this chapter it tackles about the basic network media required to make a LAN connection, Identify the types of connections for intermediate and end device connection in a LAN, Identify the pinout configurations for straight-through and crossover cables, Identify the different cabling types, standards, and ports used for WAN connections, Define the role of device management connections when using Cisco equipment, Design an addressing scheme for an internetwork and assign ranges for hosts, network devices, and the router interface and Compare and contrast the importance of network designs. As we all know that router, switch, hub are the basic network media to make a LAN connection without them there will be no LAN connection.  In making a connection we also consider what kind of cable we will used to connect intermediate device and the end device it’s either straight-through or cross over cables. There are also some types of cables namely: coaxial, wireless and it has also the port or physical cable like Fast Ethernet and Serial port that can be used in establishing a connection. When selecting a device for a particular LAN, there are a number of factors that need to be considered. These factors include, but are not limited to: Cost, Speed and Types of Ports/Interfaces, Expandability, Manageability, Additional Features and Services. When planning the installation of LAN cabling, there are four physical areas to consider: Work area, Telecommunications room, also known as the distribution facility, Backbone cabling, also known as vertical cabling, and Distribution cabling, also known as horizontal cabling. The devices that provide LAN connectivity - usually hubs or switches - typically use MDIX (media-dependent interface, crossover) connections. The MDIX cables swap the transmit pairs internally. This swapping allows the end devices to be connected to the hub or switch using a straight-through cable. Connecting different types of devices use a straight-through cable. And when connecting the same type of device, use a crossover cable. Example use straight-through cables for connecting: Switch to router, Computer to switch, Computer to hub, Use crossover cables for connecting: Switch to switch, Switch to hub, Hub to hub, Router to router, Computer to computer, Computer to router. There are types of devices that maintain the link between a sending and a receiving device namely: Data Communications Equipment (DCE) - A device that supplies the clocking services to another device. Typically, this device is at the WAN access provider end of the link. Data Terminal Equipment (DTE) - A device that receives clocking services from another device and adjusts accordingly. Typically, this device is at the WAN customer or user end of the link.