Router:

interface Ethernet0/0
 no ip address
 ip nat inside
 full-duplex
!
interface Ethernet0/0.1
 encapsulation dot1Q 1 native
 ip address 192.168.1.254 255.255.255.0

Switch:

!
interface FastEthernet0/1
 description Connection to Router (Trunk)
 switchport mode trunk
 switchport voice vlan 2
 duplex full
 spanning-tree portfast
!

!
interface Vlan1
 ip address 192.168.1.253 255.255.255.0
 no ip route-cache

!
end




Switch#sh int Fast0/1 switch
Name: Fa0/1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Voice VLAN: 2 (VLAN_Voice)
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL
Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none



Switch#sh vlan

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa0/2, Fa0/7, Fa0/8, Fa0/10, Fa0/13, Fa0/14, Fa0/16, Fa0/18, Fa0/22, Fa0/23, Fa0/24, Gi0/1, Gi0/2
2    VLAN_Voice                       active    Fa0/2, Fa0/7, Fa0/8, Fa0/10, Fa0/13, Fa0/14, Fa0/16, Fa0/18, Fa0/22, Fa0/23, Fa0/24
1002 fddi-default                     act/unsup
1003 token-ring-default               act/unsup
1004 fddinet-default                  act/unsup
1005 trnet-default                    act/unsup

VLAN Type  SAID       MTU   Parent RingNo BridgeNo Stp  BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1    enet  100001     1500  -      -      -        -    -        0      0
2    enet  100002     1500  -      -      -        -    -        0      0
1002 fddi  101002     1500  -      -      -        -    -        0      0
1003 tr    101003     1500  -      -      -        -    -        0      0
1004 fdnet 101004     1500  -      -      -        ieee -        0      0
1005 trnet 101005     1500  -      -      -        ibm  -        0      0

Remote SPAN VLANs
------------------------------------------------------------------------------


Primary Secondary Type              Ports
------- --------- ----------------- ------------------------------------------



Current configuration : 136 bytes
!
interface FastEthernet0/1
 description Connection to Router (Trunk)
 switchport mode trunk
 switchport voice vlan 2
 duplex full
end