For instructions on how to configure static MAC addresses, see Configuring a Static MAC Address, on page
43.
Layer 2 Protocol Features
Layer 2 protocol peering, forwarding, and tunneling on CDP, LACP, LLDP, PAGP, STP, UDLD, and VTP
traffic is supported. For more information about these features, see:
•
Layer 2 Protocol Peering
•
Layer 2 Protocol Forwarding
•
Layer 2 Protocol Tunneling, on page 34
Configuring EFPs
Default EVC Configuration
No EFPs are configured. No service instances or bridge domains are configured.
Configuration Guidelines
The following guidelines apply when you configure EVCs on the router.
For information about supported EVC scale, see the Cisco ASR 920 Series Aggregation Services Router
Configuration Guide.
Note
•
To configure a service instance on an interface, these commands are prerequisites:
Router (config)# interface gigabitethernet0/0/1
Router (config-if)# service instance 22 Ethernet ether
Router (config-if-srv)# encapsulation dot1q 10
Router (config-if-srv)# bridge-domain 10
•
You must configure encapsulation on a service instance before configuring bridge domain.
•
ISL trunk encapsulation is not supported.
•
The router does not support overlapping configurations on the same interface and same bridge domain.
If you have configured a VLAN range encapsulation, or encapsulation default, or encapsulation any on
service instance 1, you cannot configure any other encapsulations that also match previous encapsulations
in the same interface and bridge domain.
•
QinQ is not supported on Trunk EFP interfaces.
•
Trunk EFPs should be configured with the rewrite ingress tag pop 1 symmetric command.
Carrier Ethernet Configuration Guide (Cisco ASR 920 Series)
20
Ethernet Virtual Connections Configuration
Layer 2 Protocol Features
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