Lab Simulation 40
Guidelines
This is a lab item in which tasks will be performed on virtual devices.
- Refer to the Tasks tab to view the tasks for this lab item.
- Refer to the Topology tab to access the device console(s) and perform the tasks.
- Console access is available for all required devices by clicking the device icon or using the tab(s) above the console window.
- All necessary preconfigurations have been applied.
- Do not change the enable password or hostname for any device.
- Save your configurations to NVRAM before moving to the next item.
- Click Next at the bottom of the screen to submit this lab and move to the next question.
- When Next is clicked, the lab doses and cannot be reopened.
Topology

Tasks
Task 1
Configure trunks between Sw1 and Sw2 on ports E0/0 and E0/1 using the IEEE standard frame tagging method.
- Add VLAN 45 as untagged on the trunk ports.
- Only extend VLAN 15 and the untagged VLAN across the trunk.
- Verify that PC1 is capable of pinging PC2.
Task 2
On Sw1 and Sw2, use IEEE 802.3ad link aggregation.
- Combine E0/0 and E0/1 into a single logical link while leaving the trunk configurations intact.
- Assign number 15 to the link.
- Both links must negotiate aggregation.
Correct Answer:
See the below explanation
Explanation:
Task 1: Configure Trunks
We will configure trunk links between Sw1 and Sw2 on interfaces E0/0 and E0/1, using the IEEE
802.1Q standard for VLAN tagging. Additionally, VLAN 45 will be configured as untagged, while only VLANs 15 and 45 will be allowed across the trunk.
Steps for Task 1 on Sw1:
1. Access the trunk interfaces:
interface range Ethernet0/0 - 1
switchport mode trunk
switchport trunk native vlan 45
switchport trunk allowed vlan 15,45
2. Verify trunk configuration:
show interfaces trunk
Steps for Task 1 on Sw2:
1. Access the trunk interfaces:
interface range Ethernet0/0 - 1
switchport mode trunk
switchport trunk native vlan 45
switchport trunk allowed vlan 15,45
2. Verify trunk configuration:
show interfaces trunk
3. Test PC1 to PC2 Connectivity: On PC1, ping PC2 using its IP address 10.15.15.20:
ping 10.15.15.20
Task 2: IEEE 802.3ad Link Aggregation
Now we configure link aggregation (LACP) between Sw1 and Sw2 on interfaces E0/0 and E0/1, forming a logical link called Port-Channel 15.
Steps for Task 2 on Sw1:
1. Enable LACP and assign to a port-channel:
interface range Ethernet0/0 - 1
channel-group 15 mode active
2. Configure the port-channel interface as a trunk:
interface Port-channel15
switchport mode trunk
switchport trunk native vlan 45
switchport trunk allowed vlan 15,45
3. Verify the LACP configuration:
show etherchannel summary
Steps for Task 2 on Sw2:
1. Enable LACP and assign to a port-channel:
interface range Ethernet0/0 - 1
channel-group 15 mode active
2. Configure the port-channel interface as a trunk:
interface Port-channel15
switchport mode trunk
switchport trunk native vlan 45
switchport trunk allowed vlan 15,45
3. Verify the LACP configuration:
show etherchannel summary
Verification of Configuration
1. Trunk Verification: On both switches, confirm that the trunk is operational with VLANs 15 and
45 allowed:
show interfaces trunk
2. Port-Channel Verification: Confirm that the port-channel is active and operational:
show etherchannel summary
3. Ping Test: Verify that PC1 (10.15.15.10) can ping PC2 (10.15.15.20):
ping 10.15.15.20