6.4.3 Packet Tracer – Troubleshooting Inter-VLAN Routing Answers

6.4.3 Packet Tracer – Troubleshooting Inter-VLAN Routing Answers


6.4.3 Packet Tracer - Troubleshooting Inter-VLAN Routing Answers 2

Addressing Table

Device Interface IP Address Subnet Mask Default Gateway
S1 VLAN 99
S2 VLAN 99
S3 VLAN 99
R1 Fa0/0 N/A
Fa0/1 See Subinterface Configuration Table N/A
Server NIC

Port Assignments – S2

Ports Assignment Network
Fa0/1-0/5 802.1q Trunks (Native VLAN 99) /24
Fa0/6-0/10 VLAN 30 – Sales /24
Fa0/11 – 0/17 VLAN 10 – R&D /24
Fa0/18 – 0/24 VLAN 20 – Engineering /24

Subinterface Configuration Table – R1

Router Interface Assignment IP Address
F0/0.1 VLAN 1
Fa0/0.10 VLAN 10
Fa0/0.20 VLAN 20
Fa0/0.30 VLAN 30
Fa0/0.99 VLAN 99

Learning Objectives

  • Troubleshoot and correct the Inter-VLAN issues and configuration errors
  • Document the network configuration


In this activity, you will troubleshoot the network, find and correct all configuration errors, and document the corrected network.

Task 1: Troubleshoot and Correct the Inter-VLAN Issues and Configuration Errors

Begin by identifying what is working and what is not:

What is the state of the interfaces?

What hosts can ping other hosts?

Which hosts can ping the server?

What routes should be in the R1 routing table?

What could prevent a configured network from being installed in the routing table?

When all errors are corrected, you should be able to ping the remote server from any PC or any switch. In addition, you should be able to ping between the three PCs and ping the management interfaces on switches from any PC.

Task 2: Document the Network Configuration

When you have successfully completed your troubleshooting, capture the output of the router and all three switches with the show run command and save it to a text file.

Download Packet Tracer (.pka) file:

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