Lab 9.2.7 Troubleshooting Using Network Utilities

Lab 9.2.7 Troubleshooting Using Network Utilities
Objectives
• Examine device LEDs to determine proper Ethernet connectivity.
• Select the correct Ethernet cable for use between various types of devices.
• Visually inspect cables for potential problems.
• Use a cable tester to help identify cabling problems. Background / Preparation


Physical cabling is one of the most common sources of network problems. This lab focuses on connectivity issues related to network cabling. You will visually inspect cabling and LED link lights to evaluate physical connections and to determine if the correct type of cable is being used based on the devices they interconnect. You will also use a cable tester to identify problems with cables. The instructor will set up the network topology similar to the one shown and will preconfigure the hosts and network devices. The instructor will introduce various connectivity problems, and you will diagnose the cause of these problems by inspecting link lights and testing cables between devices. Various cable types, both good and bad, will be used to interconnect devices for each scenario in the lab. Work in teams of two, with each person taking the lead in half of the problem scenarios.
The following resources are required:
• Computer running Windows XP Professional (preconfigured)
• Server (preconfigured)
• Integrated router configured as a DHCP server and client (default configuration)
• Router with two Ethernet interfaces configured as the DHCP server to integrated router (preconfigured)
• Mix of Ethernet Cat-5 (minimum) straight-through and crossover cabling, both good and bad, to connect hosts and network devices
• Basic Cat-5 Ethernet cable tester (RJ-45 pin-to-pin continuity checker)
• Advanced cable tester (optional), such as Fluke 620 (or similar)


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?
c. Which type of cable should be used from the integrated router (router portion) to Hub/Switch?
d. Which type of cable should be used from Hub/Switch to Router?
e. Which type of cable should be used from Router to Server?
Jawaban
b. Kabel straight.
c. kabel cooper cross-over
d. Kabel cross
e. Kabel straight