ipv6 bfd all-interfaces enable

Function

The ipv6 bfd all-interfaces enable command enables IPv6 BFD in an IS-IS process.

The undo ipv6 bfd all-interfaces enable command disables IPv6 BFD from an IS-IS process.

By default, IPv6 BFD is disabled in an IS-IS process.

Format

ipv6 bfd all-interfaces enable

undo ipv6 bfd all-interfaces enable

Parameters

None

Views

IS-IS view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
isis	write

Usage Guidelines

Usage Scenario

BFD can provide millisecond-level fault detection, help IS-IS to detect the faults that occur on neighboring devices or links more quickly,and instruct IS-IS to recalculate routes for correct packet forwarding. You can run the ipv6 bfd all-interfaces enable command to enable IPv6 BFD in an IS-IS process.

Prerequisites

BFD has been enabled globally, An IS-IS process has been created, and the IS-IS process has been started on a specified interface.

Configuration Impact

After the ipv6 bfd all-interfaces enable command is run, the local end can establish an IPv6 BFD session with its neighbor through a specified interface and periodically send BFD packets on this session.

Precautions

If BFD is not enabled globally, you can configure IPv6 BFD for IS-IS but cannot establish an IPv6 BFD session.

When BFD is enabled in the IS-IS process using the

ipv6 bfd all-interfaces enable command, no BFD session is established on the interface in any of the following situations:

The isis ipv6 bfd block command is run on an interface to block the BFD capability of the interface. To establish a BFD session on the interface, run the undo isis ipv6 bfd block command.
When the isis ipv6 bfd static command is run on an interface, no BFD session can be established on the interface. To establish a BFD session on the interface, run the undo isis ipv6 bfd static command.
This command conflicts with multi-instance enable iid command.

Example

# Configure IPv6 BFD in an IS-IS process.

<HUAWEI> system-view
[~HUAWEI] isis
[*HUAWEI-isis-1] ipv6 enable
[*HUAWEI-isis-1] ipv6 bfd all-interfaces enable