Cisco ASR 920 series Configuration Guide Ethernet Router

Configuration Example for Larger String VLAN in Encapsulation
Configuration Example
show running config
ethernet service multi-line
!
interface GigabitEthernet0/0/0
service instance 1 ethernet
encapsulation dot1q 10,13,19-21,24,29,32-36,41,46-48,55,61,63-66
encapsulation dot1q add 69-73,78,80,83-86
!
service instance 2 ethernet
encapsulation dot1q 1 second-dot1q 10,13,19-21,24,29,32-36,41
encapsulation dot1q add outer 2-5,7
encapsulation dot1q add inner 46-48,55,61,63-66,69-73,78,80,83-86
encapsulation dot1q add inner 91,95-99,101
!
interface GigabitEthernet0/0/0
ethernet dot1ad nni
service instance 3 ethernet
encapsulation dot1ad 10,13,19-21,24,29,32-36,41,46-48,55,61,63-66
encapsulation dot1ad add 69-73,78,80,83-86
!
service instance 4 ethernet
encapsulation dot1ad 1 dot1q 10,13,19-21,24,29,32-36,41,46-48,55
encapsulation dot1ad add inner 61,63-66,69-73,78,80,83-86
!
!
Example for Two Service Instances Joining the Same Bridge Domain
In this example, service instance 1 on interfaces Gigabit Ethernet 0/0/1 and 0/0/2 can bridge between each
other.
Router (Router (config)# interface gigabitethernet0/1
Router (config-if)# service instance 1 Ethernet
Router (config-if-srv)# encapsulation dot1q 10
Router (config-if-srv)# bridge-domain 10
Router (config)# interface gigabitethernet0/2
Router (config-if)# service instance 1 Ethernet
Router (config-if-srv)# encapsulation dot1q 10
Router (config-if-srv)# bridge-domain 10
Example for Bridge Domains and VLAN Encapsulation
Unlike VLANs, the bridge-domain number does not need to match the VLAN encapsulation number.
Router (config)# interface gigabitethernet0/1
Router (config-if)# service instance 1 Ethernet
Router (config-if-srv)# encapsulation dot1q 10
Router (config-if-srv)# bridge-domain 3000
Router (config)# interface gigabitethernet0/2
Router (config-if)# service instance 1 Ethernet
Router (config-if-srv)# encapsulation dot1q 20
Router (config-if-srv)# bridge-domain 3000
However, when encapsulations do not match in the same bridge domain, traffic cannot be forwarded. In this
example, the service instances on Gigabit Ethernet 0/0/1 and 0/0/2 can not forward between each other, since
Carrier Ethernet Configuration Guide (Cisco ASR 920 Series)
26
Ethernet Virtual Connections Configuration
Configuration Examples

Cisco ASR 920 series Specifications

General

Form Factor	1RU
Operating System	Cisco IOS XE
Model	ASR 920 series
Memory	4 GB DRAM
Power Supply	AC or DC
Storage Temperature	-40°C to 70°C (-40°F to 158°F)
Relative Humidity	5% to 95% non-condensing
MTBF	Varies by model
Management	CLI, SNMP