CMIT 352 - 12.6.1 Lab

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Dec 6, 2023

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Packet Tracer - Troubleshooting Challenge - Document the Network Name: xxxx xxxx Class: CMIT 352 6382 Addressing Table LINE# Device Interface Device Type IP Address Subnet Mask Default Gateway 1 PC1 NIC Host 192.168.1.153 255.255.255.0 192.168.1.1 2 PC2 NIC Host 192.168.3.50 255.255.255.0 192.168.3.1 3 PC3 NIC Host 192.168.4.115 255.255.255.0 192.168.4.1 4 PC4 NIC Host 192.168.5.83 255.255.255.128 192.168.5.1 5 PC5 NIC Host 192.168.5.227 255.255.255.128 192.168.5.129 6 PC6 NIC Host 192.168.2.48 255.255.255.224 192.168.2.33 7 PC7 NIC Host 192.168.2.67 255.255.255.224 192.168.2.65 8 Hub G0/0/0 router 192.0.2.1 255.255.255.252 N/A 9 Hub S0/1/0 router 192.168.0.1 255.255.255.252 N/A 10 Hub S0/1/1 router 192.168.0.5 255.255.255.252 N/A 11 Hub S0/2/0 router 192.168.0.9 255.255.255.252 N/A 12 Hub S0/2/1 router 192.168.0.13 255.255.255.252 N/A 13 Branch-1 G0/0/0 router 192.168.1.1 255.255.255.0 N/A 14 Branch-1 S0/1/0 router 192.168.0.2 255.255.255.252 N/A 15 Branch-2 G0/0/0.32 router 192.168.2.33 255.255.255.224 N/A 16 Branch-2 S0/1/0 router 192.168.0.6 255.255.255.252 N/A 17 Branch-2 G0/0/0.1 router 192.168.2.1 255.255.255.224 N/A 18 Branch-2 G0/0/0.64 router 192.168.2.65 255.255.255.224 N/A 19 Factory G0/0/0 router 192.168.3.1 255.255.255.0 N/A 20 Factory G0/0/1 router 192.168.4.1 255.255.255.0 N/A 21 Factory S0/1/0 router 192.168.0.14 255.255.255.252 N/A 22 HQ G0/0/0.1 router 192.168.6.1 255.255.255.0 N/A 23 HQ G0/0/0.5 router 192.168.5.1 255.255.255.128 N/A 24 HQ G0/0/0.10 router 192.168.5.128 255.255.255.128 N/A 25 HQ S0/1/0 router 192.168.0.10 255.255.255.252 N/A 26 SW-F1 VLAN 1 switch 192.168.3.252 255.255.255.0 192.168.3.1 27 SW-F2 VLAN 1 switch 192.168.4.252 255.255.255.0 192.168.4.1 28 SW-HQ1 VLAN 1 switch 192.168.6.252 255.255.255.0 192.168.6.1 29 SW-HQ2 VLAN 1 switch 192.168.6.253 255.255.255.0 192.168.6.1 30 SW-HQ3 VLAN 1 switch 192.168.6.254 255.255.255.0 192.168.6.1 31 SW-B1 VLAN 1 switch 192.168.1.252 255.255.255.0 192.168.1.1 32 SW-B2 VLAN 1 switch 192.168.2.62 255.255.255.0 192.168.2.1 ã 2017 - 2023 Cisco and/or its affiliates. All rights reserved. Cisco Public Page 1 of 4 www.netacad.com
Packet Tracer - Troubleshooting Challenge - Document the Network Blank Line - no additional information Objectives In this lab, you will document a network that is unknown to you. Test network connectivity. Compile host addressing information. Remotely access default gateway devices. Document default gateway device configurations. Discover devices on the network. Draw the network topology. Background / Scenario Your employer has been hired to take over the administration of a corporate network because the previous network administrator has left the company. The network documentation is missing and needs to be recreated. Your job is to document the hosts and network devices including all the device addressing and logical interconnections. You will remotely access network devices and use network discovery to complete a device table and draw the network topology. This is Part I of a two-part series of activities. You will use the documentation that you create in this activity to guide you as you troubleshoot the network in Part II, Packet Tracer - Troubleshooting Challenge - Using Documentation to Solve Issues . As you investigate and document the network topology, make note of issues that you discover that do not adhere to the practices taught in the CCNA curriculum. Instructions Part 1: Test Connectivity Ping between the PCs and the internet server to test the network. All PCs should be able to ping one another and the internet server. Part 2: Discover PC Configuration Information Go to the command prompt of each PC and display the IP settings. Record this information in the documentation table. Part 3: Discover Information about the Default Gateway Devices Connect to each default gateway device using the Telnet protocol and record information about the interfaces that are in use in the table. The VTY password is cisco and privileged EXEC password is class . C:\> telnet IP_address Part 4: Reconstruct the Network Topology In this part of the activity, you will continue recording information about the devices in the network in the Addressing Table. In addition, you will start to diagram the network topology based on what you can discover about the device interconnections. Step 1: Access Routing Tables on Each Gateway Device. Use the routing tables in each router to learn more about the network. Make notes of your findings. ã 2017 - 2023 Cisco and/or its affiliates. All rights reserved. Cisco Public Page 2 of 4 www.netacad.com
Packet Tracer - Troubleshooting Challenge - Document the Network Step 2: Discover Non-Gateway Devices. Use a network discovery protocol to document neighboring devices. Record your findings in the addressing table. At this point you should also be able to begin documenting device interconnections. Part 5: Further Explore Device Configurations and Interconnections Step 1: Access Device Configurations. Connect to the other devices in the network. Gather information about the device configurations. Step 2: View Neighbor Information. Use discovery protocols to increase your knowledge of the network devices and topologies. Step 3: Connect to Other Devices. Display configuration information for the other devices on the network. Record your findings in the device table. By now you should know about all the devices and interface configurations in the network. All rows of the table should contain device information. Use your information to reconstruct as much of the network topology as you can. Reflection 31. You may have noticed that some of the practices used to configure the network devices are out-of-date, inefficient, or not secure. Make a list of as many recommendations that you have regarding how the devices should be reconfigured to follow the practices that you have learned in the CCNA curriculum. Type your answer here. The list gives you an opportunity to use some of the best practices that have been covered. SSH is not in use in the network. The line vty passwords were in cleartext in the configs. This is a security risk The switches all use the default SVI and management VLANs. I know it was by design, but all the passwords for privileged and non-privileged users shouldn’t be the same. They should vary between devices and be more complicated to reduce the risk of brute forcing. Management access to all devices are not restricted using ACLs. I was able to access gateway routers from regular PCs. Cisco Discovery Protocol (CDP) is on by default. This should be turned off unless necessary. 32. Network Topology Diagram ã 2017 - 2023 Cisco and/or its affiliates. All rights reserved. Cisco Public Page 3 of 4 www.netacad.com
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Packet Tracer - Troubleshooting Challenge - Document the Network ã 2017 - 2023 Cisco and/or its affiliates. All rights reserved. Cisco Public Page 4 of 4 www.netacad.com