switchport question

Hi Folks,
 
I was having a look on one of the production switches last day. and saw the
below config. I m trying to understand why the port is configured for both
access and trunk mode.what purpose is it serving or is it just a mistake..
 
Building configuration...
Current configuration : 215 bytes
!
interface GigabitEthernet1/6/6
 description **Rack C Chasis 1 blade 4,5,6,7**
 switchport
 switchport access vlan 40
 switchport trunk encapsulation dot1q
 switchport mode trunk
 spanning-tree portfast edge
end

TXU-VSS-A#sh interface g1/6/6 switch
Name: Gi1/6/6
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 40 (Non_PRD)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Operational Native VLAN tagging: disabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL

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Received on Fri Jun 11 2010 - 08:51:45 ART