C3620#sh cef interface fa 0/0
FastEthernet0/0 is up (if_number 3)
  Corresponding hwidb fast_if_number 3
  Corresponding hwidb firstsw->if_number 3
  Internet address is 67.190.114.23/24
  ICMP redirects are always sent
  Per packet load-sharing is disabled
  IP unicast RPF check is disabled
  Inbound access list is 100
  Outbound access list is not set
  IP policy routing is disabled
  BGP based policy accounting is disabled
  Hardware idb is FastEthernet0/0
  Fast switching type 1, interface type 18
  IP CEF switching enabled
  IP CEF Feature Fast switching turbo vector
  Input fast flags 0x41, Output fast flags 0x100
  ifindex 2(2)
  Slot 0 Slot unit 0 Unit 0 VC -1
  Transmit limit accumulator 0x0 (0x0)
  IP MTU 1500