FastEthernet interface keeps losing the trunk config

[Mike Hinson]

   So we have FA0/13 configured to use our Aerohive wirless. But for the past week its been losing the turnk config and I have no idea why. Heres the config we have in the 3550 switch for that interface. This interface is trunked to all of our VLANs

interface FastEthernet0/13

switchport access vlan 100

switchport trunk encapsulation dot1q

switchport trunk native vlan 100

switchport mode trunk

no ip address

spanning-tree portfast

Any ideas as to why it keeps dropping the config?

Thanks

[Jon Marshall]

Mike

I don't know why it is doing it (maybe a bug) but i would modify the config ie.

1) if it is a trunk remove the "switchport access .." line

2) if you are sure it cannot create a loop then you should change "spanning-tree portfast" to "spanning-tree portfast trunk".

If you are not sure then there should be no portfast command on that port.

Then see if this helps.

Jon