Introduction The report is prepared to analyze the use of locale LAN technologies and their role in increase the performance of the organization. The project provides a detail glimpse about LAN and related evaluation techniques and models to overcome security related issues by using troubleshooting and LAN hardware such as switches, routers, voice gateways, firewalls, and other devices. These computers are getting connected with a cable through Ethernet, Fast Ethernet and Gig Ethernet or other media for local LAN
Purpose of this course is to provide an understanding on design and implementation of Local Area network, configuring network devices and to implement security in network.
Security is one of the main aspects of any network, as data security is very important from an organization point of view. This course will help to learn router configuration, packet filter, troubleshooting network, test network performance etc. This course will also help to get the understanding of an IP address/pool management,VLAN,STP, VTP or monitoring tool for a network.
TASK 1 1.1 Evaluate various LAN technologies available in the market. Describe the technologies in relation with scenario above. LAN Technologies:LAN:A network is an enterprise network involving of many LANs in buildings, all are connected and all commonly in the same geographic area or network that is call LAN in other word. A company or organization typically owns the entire campus network, as well as the physical wiring. Campus networks commonly consist of Ethernet, 802.11 wireless LANs, higher-speed Fast Ethernet, Fast EtherChannel, and Gigabit Ethernet LANs
Figure 1: Diagram of LAN technologies
Institute of Electrical and Electronics Engineers (IEEE) Ethernet (802.3):Ethernet is a LAN technology based on the Institute of Electrical and Electronics Engineers (IEEE) 802.3 standard and offers a bandwidth of 10 Mbps between end users or PC, in other work in LAN Technology is provide connectivity to other PC through Ethernet technology and committed speed is 10 Mbps between every end user Switched Ethernet can kill the likelihood of crashes stations don't need to hear each out other to take a turn transmitting on the wire. Rather, stations can work in full-duplex mode transmitting and getting at the same time. Full-duplex mode further builds system execution with a net throughput of 10 Mbps in every heading or 20 Mbps complete throughput on every port...
Figure 2: Diagram of LAN technologies
Half-Duplex:Half duplex is components of LAN technologies where many gadgets are working with half duplex for instance HUB or repeater these center points are essentially multiport repeaters, they develop the transport topology idea of 10Base2 and 10Base5 by recovering the same electrical sign sent by the first sender of an edge out every other port. Subsequently, impacts can in any case happen, so CSMA/CD access principles keep on being utilized. The operation of Ethernet cards and the appended center point is critical to have a complete comprehension of the clogging issues and the requirement for full-duplex Ethernet. According to Figure plots the operation of half-duplex 10BaseT with center points.
Figure 3: Diagram of Half-Duplex
Find the below step for hub duplex: 1. 2. 3. 4.
Sending frame from network interface card (NIC) Looping of sent frame by NIC onto its receiving pair Frame receiving at Hub. Relaying of the frame by HUB on internal bus so that allOtherNICs can receive the electrical signal
5. Signal received from each receiving pair are repeated to all otherdevices available in network by HUB Full Duplex: Full-duplex execution is permitted when the likelihood of crashes is uprooted. Consider the utilization of Ethernet between couples of NICs, as opposed to cabling the NIC to a center point. Full duplex is likewise an alternative when utilizing switches. At the point when a solitary gadget is joined with the switch port, the switch can guarantee that there is no impact, which permits full duplex to work. Since no impacts are conceivable in full duplex in the NICs handicap their loopback hardware. Both closures can send and get at the same time. This decreases Ethernet clogging and gives the favorable circumstances, when contrasted with half-duplex 10BaseT operation Collisions don't happen time is not wasted in transmitting packets and it provides 10 Mbps in each direction, doubling the available capacity.
Figure 4: Diagram of Full-Duplex
Fast EthernetIEEE 802.3u: Fast Ethernet is another innovation to increase expanded transfer speed in Ethernet environment or other word the systems administration industry added to a higher-speed Ethernet taking into account existing Ethernet measures that is called Fast Ethernet. Quick Ethernet works at 100 Mbps and is characterized in the IEEE 802.3u standard. The Ethernet cabling plans, CSMA/CD operation, and all upper-layer convention operations are kept up with Fast Ethernet. The net result is the same information join Media Access Control (MAC) layer converged with another physical layer.
Gigabit Ethernet IEEE 802.3z or IEEE 802.3ab: Gigabit Ethernet is based on the IEEE 802.3ab and IEEE 802.3z standard and Gigabit Ethernet is supports 1000 Mbps or 1 Gbps per port of network switch and the physical layer has been modified to increase data-transmission speeds and Gigabit Ethernet can connect access-layer switches to distribution-layer switches for example Gigabit Ethernet in the switch block, core layer, and server block
10-Gigabit EthernetIEEE 802.3ae: Gigabit Ethernet utilizes 1000BASE-X to show the media sort, 10-Gigabit Ethernet utilizes 10GBASE-X. The diverse PMDs characterized in the standard, alongside the sort of fiber and separation limits. All the fiber-optic PMDs can be utilized as either a LAN or a WAN PHY, aside from the 10GBASE-LX4, which is just a PHY. Be mindful that the long-wavelength PMDs convey a fundamentally more noteworthy cost than the others. LAN Hardware This segment covers the hardware of network devices or LAN device and categorized based on OSI model in the segment find the below LAN hardware
Repeaters Hubs Bridges Switches Routers Layer 3 switches
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