mac-address issue

[hakeem123]

Mac address not learning to one of the port. Link is up. What could be the issue? how to resolve this?

CORE_02#sh mac address-table int f3/6
Multicast Entries
vlan mac address type ports
---------+---------------+-------+--------------------------------------------
4 ffff.ffff.ffff system Gi1/1,Gi1/2,Gi1/3,Gi1/4,Gi1/5,Gi1/6,Gi1/8
Gi1/10,Gi1/11,Fa3/6,Fa3/26,Fa3/27,Fa3/30
Fa3/32,Fa3/33,Fa3/35,Fa3/37,Fa3/38,Fa3/41
Fa3/48,Fa4/1,Fa4/6,Fa4/11,Fa4/16,Fa4/40
Fa7/15,Fa7/38,Fa7/39,Fa7/40,Fa8/5,Fa8/6
Fa8/25,Fa8/28,Fa8/29,Fa8/40,Fa8/41,Fa8/42
Fa8/43,Fa8/44,Fa8/46,Fa8/47,Fa8/48,Gi10/24
Gi10/25,Gi10/28,Gi10/29,Gi10/32,Switch
Po1

[hakeem123]

conf is 

interface FastEthernet3/6
switchport access vlan 4
switchport mode access
switchport nonegotiate

spanning-tree portfast
spanning-tree bpduguard enable
spanning-tree guard root
end

[Mark Malone]

Hi
whats connected to it ?
the local NIC sends the mac so if switch is not receiving it and pirt is up its likely the NIC
try a laptop or know working device

[hakeem123]

BMS device is connected

[Mark Malone]

pop the cable out put a laptop on the port
if the mac is shown issue is with the BMS unit , it will rule out the switchport
usually its the end device 9/10 times when mac not seen and port is up/up
your config is fine