Troubleshoot a range of network devices
Cisco Packet Tracer + Microsoft Word
Download this file and troubleshoot. Include all errors in your Word Document.
You should be able to ping from the PC to the laptop. Show in screenshots where the errors were.
Assessment
Tutor will give you a network in Cisco Packet Tracer with missing IP addresses or connections between devices and you have to solve the problem. Send a Report with screenshots showing which problems needed solving
Learners must troubleshoot standard network issues on any one of the following devices. Centres can use simulation software.
Network devices:
switch
router
firewall
Troubleshoot slow networks using Wireshark
HTTPS Decryption with Wireshark
Troubleshooting is an essential skill in managing and maintaining a network. Issues can arise at various layers and parts of a network, requiring a systematic approach to identify and resolve them. Below is an outline of exercises aimed at troubleshooting standard network issues on switches, routers, and firewalls.
Understand common problems associated with switches, routers, and firewalls.
Develop a structured approach to network troubleshooting.
Gain hands-on experience with diagnostic tools and commands.
Physical or simulated network devices (Switch, Router, Firewall)
PCs or laptops to simulate end devices
Ethernet cables for physical devices
Simulation software like Cisco Packet Tracer or GNS3 for virtual setups
Some users are complaining that they cannot connect to the network.
Check LED Indicators: Verify the port lights for any anomalies.
Check Physical Connections: Ensure that cables are plugged in correctly.
Verify Configuration:
Log in to the switch.
Run show running-config to verify settings.
Check VLAN Configuration:
Use show vlan to make sure ports and VLANs are correctly assigned.
Check Port Status:
Use show interfaces status to check if ports are up or down.
Users are complaining of no internet access.
Check LED Indicators: Verify that router LEDs show the expected status.
Check Connectivity:
Use the ping command to check connectivity to the next hop or the internet.
Verify Configuration:
Log in to the router.
Use show running-config to inspect the current settings.
Check Interface Status:
Use show ip interface brief to see the status of all interfaces.
Check Routing Table:
Use show ip route to verify that routes are correctly set up.
Certain legitimate traffic is being blocked, or unauthorized traffic is getting through.
Check Logs:
Review firewall logs to identify any irregularities.
Verify Access Rules:
Log in to the firewall.
Use show access-lists or a similar command to review the rules.
Test Access:
Use ping or traceroute to test connectivity through the firewall.
Check NAT/PAT Configuration:
If applicable, use commands like show xlate or show nat to verify NAT/PAT settings.
Check VPN Tunnels:
If VPNs are used, check their status using commands like show vpn-sessiondb or show crypto ipsec sa.
After each exercise, perform the following:
Discuss the symptoms of each issue and how they were identified.
Explain the steps taken to resolve the issue.
Review commands and tools used during the troubleshooting process.
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