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Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
Chapter 8 Configuring Ethernet Virtual Connections
Configuring Other Features on EFPs
Figure 8-2 802.1Q Tunnel Ports in a Service-Provider Network
You can use EFPs to configure 802.1Q tunneling in two ways:
Restrictions
• Inner VLAN range filtering for QinQ traffic from Network-to-Network Interface (NNI) to
User-to-Network Interface (UNI) is not enforced if the range is more than 1000.
• Egress VLAN range filtering for traffic coming from NNI to UNI, is not supported on UNI.
• Single-tagged EVC with VLAN range is not supported on the port channel.
Configuration Examples
In this example, for Customer A, interface Gigabit Ethernet 0/1 is the customer-facing port, and Gigabit
Ethernet 0/2 is a trunk port facing the service provider network. For Customer B, Gigabit Ethernet 0/3
is the customer-facing port, and Gigabit Ethernet 0/4 is the trunk port facing the service provider
network.
Customer A
Router (config)# interface gigabitethernet0/1
Router (config-if)# service instance 1 Ethernet
Router (config-if-srv)# encapsulation dot1q 1-100
Router (config-if-srv)# bridge-domain 500
Router (config)# interface gigabitethernet0/2
Router (config-if)# service instance 2 Ethernet
Router (config-if-srv)# encapsulation dot1q 30 second-dot1q 1-100
Router (config-if-srv)# rewrite ingress pop 1 symmetric
Router (config-if-srv)# bridge-domain 500
Customer A
VLANs 1 to 100
Customer B
VLANs 1 to 200
Customer B
VLANs 1 to 200
Customer A
VLANs 1 to 100
VLAN 40
Port with EFP
Port with EFP
Port with EFP
Port with EFP
VLAN 30
Trunk
ports
Trunk
ports
VLAN 30
VLAN 40
Se rvice
provider
802.1Q t runk port
802.1Q t runk port
802.1Q t runk port
802.1Q t runk port
802.1Q t runk port
208640
Trunk
Asymmet ric link
Port with Ethernet
Flow Point (EFP)
VLAN 30
802.1Q t runk port
802.1Q t runk port
802.1Q t runk port
802.1Q t runk port