Mine

HBColo-Stamford#ping 10.227.12.11

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.227.12.11, timeout is 2 seconds:

*Sep  6 14:33:47.918: IP: tableid=0, s=10.227.12.1 (local), d=10.227.12.11 (FastEthernet0/0.301), routed via FIB
*Sep  6 14:33:47.918: IP: s=10.227.12.1 (local), d=10.227.12.11 (FastEthernet0/0.301), len 100, sending
*Sep  6 14:33:47.918:     ICMP type=8, code=0
*Sep  6 14:33:47.918: IP: s=10.227.12.1 (local), d=10.227.12.11 (FastEthernet0/0.301), len 100, encapsulation failed
*Sep  6 14:33:47.918:     ICMP type=8, code=0.



interface FastEthernet0/0
 description LAN
 no ip address
 duplex full
 speed 100
!
interface FastEthernet0/0.300
 encapsulation dot1Q 300 native
 ip address 10.227.6.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly
!
interface FastEthernet0/0.301
 encapsulation dot1Q 301
 ip address 10.227.12.1 255.255.255.0
 ip helper-address 10.227.6.200
 ip nat inside
 ip virtual-reassembly





----------3750---------
interface FastEthernet1/0/46
 description ---2811
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 300
 switchport mode trunk
 no ip address
 duplex full
 speed 100
 no mdix auto