Cisco Cisco SM-X Layer 2 3 EtherSwitch Service Module

Router# configure terminal

Enters global configuration mode.

Router(config)# interface 

Ethernet-Internal 1/0/0

Configures the Cisco SM-X Layer 2/3 EtherSwitch Service Module.

 id ethernet

Router(config-if)# service instance 1 

ethernet

Creates a service instance on an interface and enters service instance 
configuration mode.

vlan id dot1q 

[second-dot1q vlan id] 

Router(config-if-srv)# encapsulation 

dot1Q 10

Defines the encapsulation type and enables IEEE 802.1Q encapsulation 
of traffic on a specified subinterface in a VLAN. 

vlan-id — Virtual LAN identifier. The allowed range is from 1 to 
4094. For the IEEE 802.1Q-in-Q VLAN Tag Termination feature, 
the first instance of this argument defines the outer VLAN ID, and 
the second and subsequent instances define the inner VLAN ID.

native — (Optional) Sets the VLAN ID value of the port to the 
value specified by the vlan-id argument.

This keyword is not supported by the IEEE 802.1Q-in-Q 
VLAN Tag Termination feature.

second-dot1q — Supports the IEEE 802.1Q-in-Q VLAN Tag 
Termination feature by allowing an inner VLAN ID to be 
configured.

any — Sets the inner VLAN ID value to a number that is not 
configured on any other subinterface.

The any keyword in the second-dot1q command is not 
supported on a subinterface configured for IP over Q-in-Q 
(IPoQ-in-Q) because IP routing is not supported on ambiguous 
subinterfaces.