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The following steps show how a Cisco 3750 is configured for pod-level layer-2 switching. Setting VTP mode to transparent allows us to utilize VLAN IDs above 1000. Since we only use VLANs up to 999, vtp transparent mode is not strictly required. vtp mode transparent vlan 300-999 exit Configure all ports to dot1q and set 201 as the native VLAN. interface range GigabitEthernet 1/0/1-24 switchport trunk encapsulation dot1q switchport mode trunk switchport trunk native vlan 201 exit By default, Cisco passes all VLANs. Cisco switches complain of the native VLAN IDs are different when 2 ports are connected together. That’s why you must specify VLAN 201 as the native VLAN on the layer-2 switch.