Cisco Systems A9014CFD Configuring Ethernet Virtual Connections, Finding Feature Information

C H A P T E R 8

Configuring Ethernet Virtual Connections

Metro-Ethernet Forum (MEF) defines Ethernet Virtual Connection (EVC) as an association between two or more user network interfaces that identifies a point-to-point or multipoint-to-multipoint path within the service provider network. An EVC is a conceptual service pipe within the service provider network. A bridge domain is a local broadcast domain that is VLAN-ID-agnostic. An ethernet flow point (EFP) service instance is a logical interface that connects a bridge domain to a physical port or to an EtherChannel group in a router.

An EVC broadcast domain is determined by a bridge domain and the EFPs connected to it. You can connect multiple EFPs to the same bridge domain on the same physical interface, and each EFP can have its own matching criteria and rewrite operation. An incoming frame is matched against EFP matching criteria on the interface, learned on the matching EFP, and forwarded to one or more EFPs in the bridge domain. If there are no matching EFPs, the frame is dropped.

You can use EFPs to configure VLAN translation. For example, if there are two EFPs egressing the same interface, each EFP can have a different VLAN rewrite operation, which is more flexible than the traditional switchport VLAN translation model.

Note Cisco ASR 901 router does not support switch port configuration.

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the “Feature Information for Configuring Ethernet Virtual Connections” section on page 8-33.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.

Contents

•Supported EVC Features, page 8-2

•Understanding EVC Features, page 8-3

•Configuring EFPs, page 8-7

Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide

OL-23826-09 8-1