You are trying to change the native VLAN from VLAN 1 to VLAN 1002. You have configured both sides with switchport native vlan 1002. However, the native VLAN traffic keeps failing. What is wrong?

A. The native VLAN must be VLAN 1.
B. The native VLAN cannot be an extended VLAN.
C. VLAN 1002 is not allowed for Ethernet traffic.
D. The problem is not the native VLAN; everything is configured properly.

C. VLAN 1002 is reserved for use with an FDDI VLAN and not allowed for Ethernet traffic. All Ethernet traffic must be a VLAN between 1 to 1001. You cannot use 1002 to 1005 because they are used for legacy applications.