Your colleague has built a Layer 2 network in your client locations. You must verify the configuration and fix any issues identified as per customer requirements.
Customer requirements:

  • Verify if switch ports are assigned correct VLANs as shown in topology. Identify and fix any misconfiguration found in three switches
  • Verify if trunk links are operational between switches and the IEEE 802.1Q trunk encapsulation method is used. Identify and fix any misconfiguration found in trunk configuration
  • Make sure ports connected between switches are set as trunk ports

Here are the faults in the simulation:

– Native VLAN mismatch between SW1 & SW3
– Switchport mode mismatch: one in access mode while the other end in trunk mode -> need to change from access to trunk mode
– One port in VLAN 500 while other port in VLAN 600

Recommended commands to solve this sim: show int trunk, show vlan, show run.

Commands to fix the issues:

SW1, SW2:
interface e0/2
switchport mode access
switchport access vlan 500
interface e0/3
switchport mode access
switchport access vlan 600

SW3:
interface e0/0 (or interface e0/1 of SW1)
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk native vlan … (must match the native VLAN on the other end, use “show int trunk” command on SW1 to check SW1 native VLAN)

Download the Packet Tracer file for this lab: Click here to download

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