Use EFP to configure vlan translation

The below configuration does the vlan translation between vlan 10 and vlan 20.  The vlan translation takes place at same interface (haripinning)

Switch (config)# interface gigabitethernet0/2
Switch (config-if)# switchport mode trunk
Switch (config-if)# switchport mode allowed vlan none
Switch (config-if)# service instance 1 Ethernet
Switch (config-if-srv)# encapsulation dot1q 10
Switch (config-if-srv)# rewrite ingress tag pop 1 symmetric
Switch (config-if-srv)# bridge-domain 5000
Switch (config-if-srv)# exit
Switch (config-if)# service instance 2 Ethernet
Switch (config-if-srv)# encapsulation dot1q 20
Switch (config-if-srv)# rewrite ingress tag pop 1 symmetric
Switch (config-if-srv)# bridge-domain 5000

The below configuration does the vlan translation between vlan 10 and vlan 20.  The vlan translation takes place at different interface.
Switch (config)# interface gigabitethernet0/1
Switch (config-if)# switchport mode trunk
Switch (config-if)# switchport mode allowed vlan none

Switch (config-if)# service instance 1 Ethernet
Switch (config-if-srv)# encapsulation dot1q 10
Switch (config-if-srv)# rewrite ingress tag pop 1 symmetric
Switch (config-if-srv)# bridge-domain 5000
Switch (config-if-srv)# exit

Switch (config)# interface gigabitethernet0/2
Switch (config-if)# switchport mode trunk
Switch (config-if)# switchport mode allowed vlan none

Switch (config-if)# service instance 2 Ethernet
Switch (config-if-srv)# encapsulation dot1q 20
Switch (config-if-srv)# rewrite ingress tag pop 1 symmetric
Switch (config-if-srv)# bridge-domain 5000

For Network Design, Build and Consulting Services, 

please visit:

www.unistreamnetworks.com