CNAP.CCNA 1 Networking basics v3.1 Case Study [Cisco Systems; CNAP; ENG]

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.1 Lab 1 Copyright � 2004, Cisco Systems, Inc.Note: Shown here is a diagram of an RJ-45 jack.Notice that the plugwill fit with the key toward the bottom of the jack.Positioning theplug with the key pointed away from you when inserting theconductors will ensure that pin 1 will start on the left and proceed topin 8 on the right.a.Terminate one side of the cable using the T568A standard.b.Apply a slight downward pressure as the conductors are inserted.Apply slight pressure until they are fully inserted and under theplug contacts at the top of the plug.95 - 129 CCNA 1: Networking Basics v3.1 Lab 1 Copyright � 2004, Cisco Systems, Inc.Place the plug into the die until it clicks.c.Complete the termination by closing the handles fully and thenreleasing them.Step 4 Terminating a Plug with T568B Wiring Standarda.Repeat Steps 1 through 3.T568B StandardPin# Pair# Function Wire Color1 2 Transmit White/Orange2 2 Transmit Orange3 3 Receive White/Green4 1 Not used Blue5 1 Not used White/Blue6 3 Receive Green7 4 Not used White/Brown8 4 Not used Brown96 - 129 CCNA 1: Networking Basics v3.1 Lab 1 Copyright � 2004, Cisco Systems, Inc.b.Once both ends of the cable have been completed, have a teammember review the wiring standards to ensure that the plugs arecorrectly terminated.Step 5 How To Decide Which Wiring Standard To Usea.When deciding which wiring standard to use, ask these questions:Does the job specification require a certain wiring standard?Has it already been established by the existing cabling?Does the new wiring match the existing wiring?Has the customer specified a wiring standard?Have patch panels already been purchased for the job? If so, theywill probably be either T568A or T568B.The jacks should bewired to the same standard as the panels.b.If none of the previous factors apply, either T568A or T568Bmay be used.It is important to ensure that the workstationconnectors and the patch panels are wired to the same standard.In the United States, T568B is commonly used in commercialinstallations, while T568A is the standard in residentialinstallations.Step 6 Testinga.Use the Fluke 620 cable meter or LinkRunner to test the jackinstallation.What are the results of the test?________________________________________________________________________________________________________________b.Are the results exactly the same when the second jack is tested?________________________________________________________97 - 129 CCNA 1: Networking Basics v3.1 Lab 1 Copyright � 2004, Cisco Systems, Inc.c.Why or why not?________________________________________________________________________________________________________________Step 7 Clean UpEnsure that all tools are properly stored, and that all trash and debrishas been removed from the work area.RJ-45 USOC SchematicPin# Pair# Wire Color1 4 White/Brown2 3 Green3 2 White/Orange4 1 Blue5 1 White/Blue6 2 Orange7 3 White/Green8 4 BrownUSOC is an old standard used for voice cabling.For phones with oneor two lines, which use pins 4/5 and 3/6, T568A or T568B will workjust as well as USOC.However, for Ethernet, pins 1/2 and 3/6, USOCwill not work.An Ethernet NIC trying to transmit on pins 1/2 will notwork because 1/2 is not a pair, they are not the same color and nottwisted together.The USOC code is not recognized by the Standards,however it is common in the termination of T1 circuits.98 - 129 CCNA 1: Networking Basics v3.1 Lab 1 Copyright � 2004, Cisco Systems, Inc.Lab 2: Terminating a Category 5e Cable on aCategory 5e Patch PanelObjectives" Terminate a Category 5e cable on a Category 5e patch panel." Proper use of the 110-punch-down tool." Proper use of the cable stripper.Background/PreparationA Category 5e patch panel is a device that is used to terminate wiresin a central location.Cables from local data and voice networks arecollected in one patch panel, and cables from the outside are collectedin a separate panel.These two panels provide a way to connect thetwo collections of wires in order to supply connectivity from outsidethe building all the way to the desktop.This system of wiremanagement allows for organization and quick changes.In this lab, a Category 5e cable will be terminated on a patch panel.The other end of the cable will be terminated on a 110-connectionblock.The instructor or lab assistant will designate the location of thepunch-down for each student at the top of this sheet indicating therack, row, and position on the patch panel.Work in teams of 2 to 4people.The following resources will be required:" Category 5e patch panel" 1.2 m (4 ft) of Category 5e UTP cable" Wire stripper tool" Wire snipping tool" Impact tool with 110 cutting blade" C4 clips" 110 to RJ-45 adaptor cable" Fluke 620 or LinkRunner" Safety glassesURLhttp://www.panduit.comSafetyRemember to always wear safety glasses when punching down wires.Always be conscious of the task being performed to avoid accidentalcuts.99 - 129 CCNA 1: Networking Basics v3.1 Lab 2 Copyright � 2004, Cisco Systems, Inc.Step 1 Cable PreparationRemove enough of the sheath to terminate the cable on the patchpanel.Step 2 Insert the Conductorsa.Fan out the conductor pairs without untwisting the wires at all.b.Follow the label on the rear of the patch panel.Cables will beterminated as T568B.c.Make sure to have 8-10 cm (3-4 inches) of extra wire past thetermination point and split a twist on the colored tip.The tip colorgoes to the left and the ring color goes to the right.This willensure that the twisting continues up to the point of termination.It is very important that the twists in the wire remain as tight aspossible up to the point of termination.Note: The maximum untwist length for Category 5e cable is 1 cm(0.5 in).d.To make sure the termination of the cable looks professional, it isbest to begin the insertion of the conductors with the center pairsand work towards the outside termination points.This willprovide the outside wire pairs a minimal and equal amount ofexposure.Step 3 Punch DownNote: If the patch panel is punched down on too hard, the circuitboard inside may be damaged.The single wire impact tool with the110-blade should only be used for this application.The impact tool100 - 129 CCNA 1: Networking Basics v3.1 Lab 2 Copyright � 2004, Cisco Systems, Inc.should be set on the lo setting.Never use the multipunch tool whenterminating on a patch panel.a.Position the impact tool over the wire with the blade facingtoward the end of the wire and press firmly on the impact tooluntil it clicks.Do not hit the tool with the hand to punch down thewires.With the impact tool set to lo , it may be necessary topunch the wire two or three times to insure a proper termination.b.Follow steps 2 and 3 for the other wire.Gently remove the excesswire.c.Repeat this step for each pair of wires.Step 4 110 Panela.Strip 7.5 cm (3 in) from the other end of the cable and terminateit on the designated row and position of 110-connection blockAA or BB-5.This block is located on the relay rack.b.Install a C4 clip over the Category 5e cable using the multipairtermination tool.Step 5 RJ45 to 110 Adapter Cablea [ Pobierz całość w formacie PDF ]

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