Lab 9.3.3 Troubleshooting Physical Connectivity

Step 1: Build the network and configure the hosts
a. Ask your instructor to set up a network topology similar to the one shown with a preconfigured Host-A client computer, integrated router, server, and router. Initially, correct and properly functioning cabling is used so that end-to-end connectivity can be verified. The instructor then introduces cabling problems in each scenario.
b. Problems can consist of using the wrong type of` cable between two devices (straight-through or crossover) or using a defective cable (miswired or improperly terminated). Observe device interface link lights, visually inspect cables, and use a cable tester to determine the problems.
c. Complete steps 2 and 3 of this lab before the instructor introduces problems.


Step 2: Record the correct cable types used between devices 
a. Refer to the topology diagram and record the cable type that should be used (straight-through or crossover) based on the devices being connected. Have your instructor verify this information before proceeding.
b. Which type of cable should be used from Host-A to the integrated router?
Jawaban: Straight-melalui kabel
c. Which type of cable should be used from the integrated router (router portion) to Hub/Switch?
Jawaban:  kabel Straight
d. Which type of cable should be used from Hub/Switch to Router?
Jawaban: kabel Straight
e. Which type of cable should be used from Router to Server?
Jawaban: Kabel Crossover


Step 3: Record the IP address information for the computers 
a. Use the ipconfig command, or get the IP address of Host-A from your instructor, and record it here. Host-A IP address:
Jawaban : DHCP 192.168.1.x
b. Get the server IP address from your instructor and record it here. Server IP address:
c. Before starting on problem scenarios, verify end-to-end connectivity by pinging from Host-A to Server. 
If you do not get a reply from the server, check with your instructor. There may be a problem with the initial hardware or software setup.


Step 4: Scenario 1
a. After your instructor sets up the problem, use visual inspection and a cable tester to isolate the problem.
b. Ping from Host-A to Server. What happened
Jawaban: Host-A tidak dapat mencapai host tujuan (Server).
c. Check the LED link lights on the various device interfaces. Write down any that are not lit.
Jawaban: Host-A NIC LED dan LED di depan saklar penerus yang terintegrasi yang sesuai dengan port mana host- Tersambung.
d. Disconnect and inspect the cable connecting the network interfaces that were not lit. Describe the problem and how you were able to identify it.
Jawaban: Masalah: salah tipe kabel antara Host-A dan terpadu router (Crossover bukan straightthrough a)Pemeriksaan secara visual bisa mengungkapkan jenis kabel yang salah berdasarkan yang diidentifikasi dalam Langkah 2. Suatu dasar kabel tester akan menunjukkan bahwa kontinuitas kawat itu baik tetapi bahwa ini adalah kabel crossover. straightthrough A kabel harus digunakan untuk menghubungkan host ke switch / hub (atau switch pelabuhan yang terintegrasi router).
e. What did you do to correct the problem?
Jawaban: Diganti kabel crossover
f. When the problem is corrected, retest and verify end-to-end connectivity by pinging from Host-A to Server. Was the ping successful?


Step 5: Scenario 2
a. After your instructor sets up the problem, use visual inspection and a cable tester to isolate the problem.
b. Ping from Host-A to Server. What happened
Jawaban: Host-A tidak dapat mencapai tujuan host (Server)
c. Check the LED link lights on the various device interfaces. Write down any that are not lit.
d. Disconnect and inspect the cable connecting the network interfaces that were not lit. Describe the
problem and how you were able to identify it.
e. What did you do to correct the problem?
f. When the problem is corrected, retest and verify end-to-end connectivity by pinging from Host-A to
Server. Was the ping successful?


Step 6: Scenario 3
a. After your instructor sets up the problem, use visual inspection and a cable tester to isolate the problem.
b. Ping from Host-A to Server. What happened?
c. Check the LED link lights on the various device interfaces. Write down any that are not lit.
d. Disconnect and inspect the cable connecting the network interfaces that were not lit. Describe the
problem and how you were able to identify it.
e. What did you do to correct the problem?
f. When the problem is corrected, retest and verify end-to-end connectivity by pinging from Host-A to
Server. Was the ping successful?


Step 7: Scenario 4
a. After your instructor sets up the problem, use visual inspection and a cable tester to isolate the problem.
b. Ping from Host-A to Server. What happened?
c. Check the LED link lights on the various device interfaces. Write down any that are not lit.
d. Disconnect and inspect the cable connecting the network interfaces that were not lit. Describe the
problem and how you were able to identify it.
e. What did you do to correct the problem?
f. When the problem is corrected, retest and verify end-to-end connectivity by pinging from Host-A to
Server. Was the ping successful?


Step 8: Reflection 
a. What are some general rules to help you determine which type of Ethernet cable (straight-through or crossover) to use to connect different types of network hosts and devices?
b. Which types of problems can a cable tester detect that might not be determined by visual inspection?

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