You install a new Brocade SX router on a network. You configure each VLAN to run RSTP. One
VLAN has reverted to STP. What has occurred?
A.
STP BPDU is detected on that port.
B.
802.1q port trunking is detected on that port.
C.
BPDU Guard is enabled on that port.
D.
LLDP auto detection is enabled on that port.