C H A P T E R
11-1
Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide
OL-16506-10
11
Configuring Bridge Domain Interfaces
The Cisco ASR 1000 Series Routers support the bridge domain interface feature for terminating Layer
2 Ethernet segments into Layer 3 IP.
This chapter covers the following topics:
•
Restrictions for the Bridge Domain Interface, page 11-1
•
Information About a Bridge Domain Interface, page 11-1
•
Creating or Deleting a Bridge Domain Interface, page 11-4
•
Bridge Domain Interface Scalability, page 11-5
•
Configuring a Bridge Domain Interface, page 11-5
Restrictions for the Bridge Domain Interface
Restrictions for a bridge domain interface include:
•
Only 4096 bridge domain interfaces are supported per system.
•
When using a bridge domain interface in a bridge domain, configure the
rewrite
command on all
the incoming service instances to remove the VLAN tags.
Information About a Bridge Domain Interface
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
