Layer 2 Protocol Features; Configuring Efps; Default Evc Configuration; Configuration Guidelines - Cisco ASR 920 Series Configuration Manual Ethernet Router

Layer 2 Protocol Features

For instructions on how to configure static MAC addresses, see
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:
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•
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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
Note
Configuration
• To configure a service instance on an interface, these commands are prerequisites:
• 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.
• 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
Layer 2 Protocol Peering
Layer 2 Protocol Forwarding
Layer 2 Protocol Tunneling, on page 34
Guide.
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
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.
Ethernet Virtual Connections Configuration
Configuring a Static MAC Address, on page
Cisco ASR 920 Series Aggregation Services Router