Hi,I have a cisco 3560 se Swtich on our LAN that is connected with another cisco 3560 switch. The error:Jun 21 19:19:26.927 METDST: %ETHCNTR-3-LOOP_BACK_DETECTED: Loop-back detected on FastEthernet0/3.Jun 21 19:19:26.927 METDST: %PM-4-ERR_DISABLE: lo...