ospfv3 bfd block

Function

The ospfv3 bfd block command blocks the bidirectional forwarding detection (BFD) dynamically created by an interface.

The undo ospfv3 bfd block command cancels the feature.

By default, BFD is not blocked.

Format

ospfv3 bfd block [ instance instance-id ]

undo ospfv3 bfd block [ instance instance-id ]

Parameters

Parameter	Description	Value
instance instance-id	Indicates the interface instance id.	The value is an integer ranges from 0 to 255.

Views

Interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

If the bfd all-interfaces enable command is run in the OSPFv3 process, all neighbors that enable OSPFv3 and the neighbor relationship is in Full state create BFD sessions. To prevent specific interfaces from being enabled with BFD, you can disable their interfaces from dynamically creating BFD sessions.

Prerequisites

BFD has been enabled on these interfaces.
Before configuring this command, you must run the ipv6 enable command to enable the IPv6 function in the interface view.

Precautions

The ospfv3 bfd enable command and the ospfv3 bfd block command are mutually exclusive.

Example

# Block the BFD dynamically created by GigabitEthernet0/0/1 when configured the BFD for OSPF3 of all interfaces in the OSPF3 process.

<sysname> system-view

[sysname] interface GigabitEthernet0/0/1

[sysname-GigabitEthernet0/0/1] ospfv3 bfd block instance 1