bfr-prefix

Function

The bfr-prefix command configures a BFR-prefix in a BIER sub-domain.

The undo bfr-prefix command restores the default configuration.

By default, no BFR-prefix is configured in a BIER sub-domain.

Format

bfr-prefix interface { interface-name | interface-type interface-num }

undo bfr-prefix [ interface { interface-name | interface-type interface-num } ]

Parameters

Parameter	Description	Value
interface-type	Specifies the type of an interface.	-
interface-num	Specifies the number of an interface.	-
interface interface-name	Specifies the name of an interface.	-

Parameter

Description

Value

interface-type

Specifies the type of an interface.

interface-num

Specifies the number of an interface.

interface interface-name

Specifies the name of an interface.

Views

BIER subdomain view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bier	write

Usage Guidelines

Usage Scenario

To configure a BFR-prefix in a BIER sub-domain, run this command. Similar to a router ID, a BFR-prefix is used to flood BIER TLV information. The BIER-prefix must be unique in the sub-domain and must be a host address (not a network segment prefix). Otherwise, the BIER tunnel cannot be established.

Prerequisites

A BIER sub-domain has been configured using the sub-domain command.

Precautions

The function takes effect only after IS-IS is enabled on the interface corresponding to the BFR-prefix.

Example

# Configure a BFR-prefix in a BIER sub-domain.

<HUAWEI> system-view
[~HUAWEI] interface LoopBack 0
[*HUAWEI-LoopBack0] ip address 4.4.4.4 32
[*HUAWEI-LoopBack0] isis enable
[*HUAWEI-LoopBack0] quit
[*HUAWEI] bier
[*HUAWEI-bier] sub-domain 0
[*HUAWEI-bier-sub-domain-0] bfr-prefix interface LoopBack 0