Packet Tracer – Configuring VLANs Instructions Answers

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Packet Tracer – Configuring VLANs

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Part 1: Verify the Default VLAN Configuration

Part 2: Configure VLANs

Part 3: Assign VLANs to Ports


VLANs are helpful in the administration of logical groups, allowing members of a group to be easily moved, changed, or added. This activity focuses on creating and naming VLANs, and assigning access ports to specific VLANs.

Part 1: View the Default VLAN Configuration

Step 1: Display the current VLANs.

On S1, issue the command that displays all VLANs configured. By default, all interfaces are assigned to VLAN 1.

Step 2: Verify connectivity between PCs on the same network.

Notice that each PC can ping the other PC that shares the same network.

· PC1 can ping PC4
· PC2 can ping PC5
· PC3 can ping PC6

Pings to PCs in other networks fail.

What benefit will configuring VLANs provide to the current configuration?

The primary benefits of using VLANs are as follows: security, cost reduction, higher performance, broadcast storm mitigation, improved IT staff efficiency, and simpler project and application management.

Part 2: Configure VLANs

Step 1: Create and name VLANs on S1.

Create the following VLANs. Names are case-sensitive:

· VLAN 10: Faculty/Staff
· VLAN 20: Students
· VLAN 30: Guest(Default)
· VLAN 99: Management&Native

S1(config)#vlan 10
S1(config-vlan)#name Faculty/Staff
S1(config-vlan)#vlan 20
S1(config-vlan)#name Students
S1(config-vlan)#vlan 30
S1(config-vlan)#name Guest(Default)
S1(config-vlan)#vlan 99
S1(config-vlan)#name Management&Native

Step 2: Verify the VLAN configuration.

Which command will only display the VLAN name, status, and associated ports on a switch?

S1# show vlan brief

Step 3: Create the VLANs on S2 and S3.

Using the same commands from Step 1, create and name the same VLANs on S2 and S3.

Step 4: Verify the VLAN configuration.

Part 3: Assign VLANs to Ports

Step 1: Assign VLANs to the active ports on S2.

Assign the VLANs to the following ports:

· VLAN 10: Fast Ethernet 0/11
· VLAN 20: Fast Ethernet 0/18
· VLAN 30: Fast Ethernet 0/6

S2(config)#int fa0/11
S2(config-if)#switchport access vlan 10
S2(config-if)#int fa0/18
S2(config-if)#switchport access vlan 20
S2(config-if)#int fa0/6
S2(config-if)#switchport access vlan 30

Step 2: Assign VLANs to the active ports on S3.

S3 uses the same VLAN access port assignments as S2.

Step 3: Verify loss of connectivity.

Previously, PCs that shared the same network could ping each other successfully. Try pinging between PC1 and PC4. Although the access ports are assigned to the appropriate VLANs, were the pings successful? Why?

No, the pings failed because the ports between the switches are in VLAN 1 and PC1 and PC4 are in

What could be done to resolve this issue?

Configure the ports between the switches as trunk ports

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