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CCNA: LACP and Trunking Simulation V.3

Topology: Cisco 3560-24PS switches Sw1 and Sw2 with Port-channel 15 (Po15) on GigabitEthernet0/1 and GigabitEthernet0/2; PC1 on Sw1 VLAN 15 (10.15.15.10/24); PC2 on Sw2 VLAN 15 (10.15.15.20/24).
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Tasks

  1. Task 1. Configure trunks between Sw1 and Sw2 on ports GigabitEthernet0/1 and GigabitEthernet0/2 using the IEEE standard frame tagging method (802.1Q).
    • Add VLAN 45 as untagged (native) on the trunk ports.
    • Only extend VLAN 15 and the untagged VLAN across the trunk.
    • Verify that PC1 can ping PC2 (ping 10.15.15.20) after Task 1 trunks are in place on both switches.
  2. Task 2. On Sw1 and Sw2, use IEEE 802.3ad link aggregation (LACP).
    • Combine Gi0/1 and Gi0/2 into a single logical link while leaving the trunk behavior on Port-channel15.
    • Assign number 15 to the link (channel-group 15 mode active).
    • Both sides must negotiate aggregation (active LACP).

Updated for 2026