bfr-prefix (BIER subdomain IPv6 view)

Function

The bfr-prefix command configures a BFR-prefix in a BIERv6 sub-domain.

The undo bfr-prefix command restores the default configuration.

By default, no BFR-prefix is configured in a BIERv6 sub-domain.

Format

bfr-prefix interface { interface-name | interface-type interface-number } [ ipv6-address-value ]

undo bfr-prefix [ interface { interface-name | interface-type interface-number } [ ipv6-address-value ] ]

Parameters

Parameter	Description	Value
interface-type	Specifies the type of an interface.	-
interface-number	Specifies the number of an interface.	-
ipv6-address-value	Specifies an IPv6 global address.	The value is a 128-digit hexadecimal number in the format of X:X::X:X.
interface interface-name	Specifies the name of an interface.	-

Views

BIER subdomain IPv6 view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bier	write

Usage Guidelines

Usage Scenario

Similar to a router ID, a BFR-prefix is used to flood BIER TLV information. The BIERv6-prefix of each BFR must be unique in the sub-domain and must be a host address (not a network segment prefix). Otherwise, the BIERv6 tunnel cannot be established.

Prerequisites

A BIERv6 sub-domain has been configured using the sub-domain command.

Precautions

The function takes effect only after IS-ISIPv6is enabled on the interface corresponding to the BFR-prefix.

Example

# Configure a BFR-prefix in a BIERv6 sub-domain.

<HUAWEI> system-view
[~HUAWEI] interface LoopBack 0
[*HUAWEI-LoopBack0] ipv6 enable
[*HUAWEI-LoopBack0] ipv6 address 2001:db8::1 128
[*HUAWEI-LoopBack0] isis ipv6 enable
[*HUAWEI-LoopBack0] quit
[*HUAWEI] bier
[*HUAWEI-bier] sub-domain 0 ipv6
[*HUAWEI-bier-sub-domain-0-ipv6] bfr-prefix interface LoopBack 0