This chapter describes the Integrated Routing and Bridging (IRB) chapter, which covers the Bridge-Group Virtual Interface (BVI), packet flows between bridged and routed domains, supported environments, and tasks to configure a BVI, Layer 2 attachment circuits, and bridge domains.
Integrated Routing and Bridging
This topic describes how Integrated Routing and Bridging (IRB) provides the ability to route between a bridge group and a routed interface.
Configuration guidelines and restrictions for IRB
This topic describes the guidelines and restrictions to configure Integrated Routing and Bridging (IRB), including BVI-to-bridge-domain limits, unsupported features on the BVI, supported bridge-domain characteristics, subinterface encapsulation rules, and QoS restrictions.
Prerequisites to configure IRB
This topic describes the prerequisites to configure Integrated Routing and Bridging (IRB), including user group and task ID requirements, line card selection, Layer 3 information for the Bridge-Group Virtual Interface (BVI), MAC address planning, and routing advertisement.
Configure BVI
This topic describes how to configure a Bridge-Group Virtual Interface (BVI) by creating the interface, assigning IP addresses, and optionally setting ARP timers, bandwidth, MAC address, and MTU for the interface.
Configure Layer 2 AC interfaces
This topic describes how to configure the Layer 2 attachment circuit (AC) interfaces for routing by a Bridge-Group Virtual Interface (BVI), including enabling Layer 2 transport mode, applying IEEE 802.1Q encapsulation, and rewriting ingress tags.
Configure a bridge group and assign interfaces to a bridge domain
This topic describes how to configure an L2VPN bridge group and bridge domain and associate a HundredGigE interface with the bridge domain so that the interfaces can be routed by a Bridge-Group Virtual Interface (BVI).
Associate BVI as a routed Interface on a bridge domain
This topic describes how to associate a Bridge-Group Virtual Interface (BVI) as the routed interface on a bridge domain by creating the bridge group and bridge domain and applying the routed interface BVI configuration.
Display information about BVI
This topic lists the show commands you can use to display information about a Bridge-Group Virtual Interface (BVI).
IRB configuration examples
This topic covers various configuration examples for IRB.