Cisco Systems 1000 Series Manual De Usuario

Netflow

QOS

Network-Based Application Recognition (NBAR) or Advanced Video Coding (AVC)

Bridge domain interfaces support the following features from IOS XE 3.8.2 and later:

Hot Standby Router Protocol (HSRP)

Virtual Router Redundancy Protocol (VRRP)

For a BDI, the maximum transmission unit (MTU) size can be configured between 1500 and 9216 
bytes.

Cryptographic VPNs are not supported in combination with BDI.

MPLS is not supported on bridge domain interfaces.

Bridge domain interface is a logical interface that allows bidirectional flow of traffic between a Layer 2 
bridged network and a Layer 3 routed network traffic. Bridge domain interfaces are identified by the 
same index as the bridge domain. Each bridge domain represents a Layer 2 broadcast domain. Only one 
bridge domain interface can be associated with a bridge domain. 

Bridge domain interface supports the following features:

IP termination

Layer 3 VPN termination

Address Resolution Protocol (ARP), G-ARP, and P-ARP handling

MAC address assignment

Prior to configuring a bridge domain interface, you must understand the following concepts:

An Ethernet Virtual Circuit (EVC) is an end-to-end representation of a single instance of a Layer 2 
service being offered by a provider to a customer. It embodies the different parameters on which the 
service is being offered. In the Cisco EVC Framework, the bridge domains are made up of one or more 
Layer 2 interfaces known as service instances. A service instance is the instantiation of an EVC on a 
given port on a given router. Service instance is associated with a bridge domain based on the 
configuration. 

An incoming frame can be classified as service instance based on the following criteria: