Configuration Example For Larger String Vlan In Encapsulation; Example For Two Service Instances Joining The Same Bridge Domain; Example For Bridge Domains And Vlan Encapsulation - Cisco ASR 920 Series Configuration Manual Ethernet Router

Configuration Examples

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