Permission is granted to print and copy this document for noncommercial distribution and exclusive use by instructors in the ccna 5rxwlqj dqg 6zlwfklqj 6zlwfkhg 1hwzrunv course. Lan switching is performed using hardware at the data link layer. Basic switch concepts and configuration objectives upon completion of this chapter, you will be able to answer the following questions. Lan switching is a form of multiport bridging, where a bridge device connects not just two, but many lans on different ports.
The function and operation of layer 2 switching, layer 3 switching, and routing the osi model functionality of lan, man and wan networks possible media types for lan and wan connections the function and definition of firewalls and gateways. The performance of packet switching is called best. In the shared bus architecture example, the speed of the shared data bus determines much of the overall traffic handling capacity of the switch. Overall, they can increase the capacity and speed of your network. It enables some key benefits over traditional lan bridged and routed networks. Mac address a 6octet number representing the physical address of. Cisco lan switching fundamentals paperback barnes, david, sakandar, basir on. Unused vlans should be manually pruned from trunked interfaces to avoid broadcast propagation.
Local area network lan has been developed to ensure communication between computers, work stations and peripherals in an area of a very limited geographical size. This book goes beyond earlier editions of the cisco press companion guides by providing. What are the functions that enable a switch to forward ethernet frames in a lan. When a collision is detected, the transmitting devices send out a jamming signal.
Switching technologies are vital to network design, as these technologies permit the traffic to be sent only where it is required. Explain how pruning reduces unnecessary broadcast traffic on the lan task 1. The block responsible for implementing the media access control functions of the ethernet specification. Lan switching is a form of packet switching in which the data packets are transferred from one computer to another over a network. Switched networks instructor lab manual this document is exclusive property of cisco systems, inc. Therefore, the idea of switching technology is developed as a means of coping with these problems faced by network managers. The lan switch is really a complex bridge with many interfaces. Welcome to website, a free ccna tutorial site that closely follows the cisco ccna curriculum. Similar to lan switching within ip routing domain in ethernet allow ip routing over a mesh of 802. Packet switching is similar to message switching using short messages. Data communication and computer network 4 lan provides a useful way of sharing the resources between end users. This removes the need to control access to the link using carrier sense multiple access collision detect csmacd.
Ethernet is a local area network technology with end stations assigned unique 48bit addresses. Marketing lan can be all over the building m users can move but not change lan m traffic between lans is routed. Any message exceeding a networkdefined maximum length is broken up into shorter units, known as packets, for transmission. A wlan can be installed as the sole network in a school or building. Metropolitan area network man a metropolitan area network man is a network that connects two or more computers, communicating. Contents v catalyst 2960 switch software configuration guide ol860301 obtaining configuration files 37 example configuration 38 manually assigning ip information 39 checking and saving the running configuration 310 modifying the startup configuration 311 default boot configuration 312 automatically downloading a configuration file 312 specifying the filename to read and write the.
Designing a campus network may not appear as interesting or exciting as designing an ip telephony network, an ip video network, or even designing a wireless network. After reading the following question at least a gazillion times. File type pdf lan switching wireless lab manual answers lan switching wireless lab manual answers 4. Lan switching is a form of packet switching used in local area networks. Basics of tcpip, switching, routing and firewalling. Switches map the ethernet addresses of the nodes residing on each network. Basic switch configuration all contents are copyright 19922007. The complete guide to lan switching technology rich seifert, james edwards on. For example, chapter 7, ethernet lan switching concepts, explains how ethernet can support fullduplex fdx communication if a switch connects to a single device rather than a hub. A network switch also called switching hub, bridging hub, officially mac bridge is networking hardware that connects devices on a computer network by using packet switching to receive and forward data to the destination device a network switch is a multiport network bridge that uses mac addresses to forward data at the data link layer layer 2 of the osi model. A connection between the same two buildings, using a dedicated t1 line as a medium, would generally be considered a wan. Virtual local area networks vlans a tutorial computer science. The network basics of bridging, routing, and switching.
This tuning can save seconds of outage when restoring a failed link or node. Set up ethereal a lan analyser and start capturing packets. Switching technology is making existing systems more powerful, while at the same time facilitating the migration to faster networks. Local area networks university of california, berkeley. Basic vlan configuration all contents are copyright 19922007 cisco systems, inc. If you have a meeting room with 100 users then a single access point might be unable to.
The complete guide to lan switching technology table of contents. Cable a network that is similar to the one in the topology diagram. In contrast, a hub shares bandwidth across multiple connections. In the next couple of chapters, we will learn about lans and the main device we will use will be the switch.
However, this is because of the technology used, and not the zombieinfested distance between the two buildings. Better to keep all traffic on one lan m switch when you can, route when you must. A mac address is the physical address of the device and is 48 bits 6 bytes long. Lan switching and wireless, ccna exploration companion guideis the official supplement textbook to be used with v4 of the ccna exploration lan switching and wireless online curriculum of the networking academy. Vlan configuration guide supermicro l2l3 switches configuration guide 5 1. Ccna routing switching these free pdf notes is to improve the ccna basics and concepts. Introduction to lan switching welcome to the world of lans, in the previous couple of chapters, we learnt about routers and how they are used in the networking environments.
In lan bridging and switching environments, you are concerned with the physical address mac address, and the mac address is found in the frame header. He shows you how to do the basic configuration on a brand new switches. It describes how to implement flow control and load sharing, isolate uses in the same vlan, eliminate layer 2 loops, divide vlans, and modify vlan tags for packets. The function and operation of a hub, a switch, and a router the function and operation of layer 2 switching, layer 3 switching, and routing the osi model functionality of lan, man and wan networks possible media types for lan and wan connections the function and definition of firewalls and gateways. Virtual lan q virtual lan broadcasts and multicast. The site was designed to help you pass the ccna exam 200125, but it can also be used as a reference site for anything networking related. This example is greatly simplified and will be discussed in detail for catalyst platforms that utilize a shared bus architecture in chapter 3, catalyst switching architecture. Switching seamlessly switching from one access point to another is called roaming. Virtual local area networks vlans a tutorial author.
From your command prompt, ping the ip address of another pc. Messages are broken into units called packets, and sent from one. Simultaneously switching can performed on multiple inputoutput links without collision switching hub can support mixed capacity links, i. Lan data transmissions at layer 2 fall into three classifications. A lan is generally a highspeed network that covers a small geographic area, usually contained within a single building or campus. Wap is also built using a circuit switching or packet switching methods. If we have a collection of interconnected lans, this is called an. Lans are composed of inexpensive networking and routing equipment. Learn the switching methods which are used in internal frame processing of a switch. Ethernet lan router vancouver branch token ring lan gateway frame relay atm t1 line ny headquaters. The resources such as printers, file servers, scanners, and internet are easily sharable among computers. The connected stations in a lan are autonomous, meaning that primary and secondary sta. Get an overview of lan switching where we discuss cisco switches, vlans, trunking, vtp, spanning tree, port channel, and some best practices. This muchneeded update to the bestselling guide on the extensive changes to the local area networks lan switching technologies explains why lan switching technologies are critical to network design.
Because lan switching is hardwarebased, it uses mac addresses, which are used by lan switches to forward frames. Describe the functionality of lan, man, and wan networks. Switch configuration by the end of this session, you will be able to. However, switching should not be seen as a cureall for network issues. When you configure switch to switch interconnections to carry multiple vlans, set dtp to onon with no negotiate to avoid dtp protocol negotiation. Although this is a layer 2 ethernet switching course, networks always use higher layers as well. This lab introduces you to the basics of switch configuration. A lan is usually under the administrative control of a single organization. Essentially, though, a lan switch has every device on its own lan segment piece of a lan, giving each system the entire lan bandwidth.
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