ospf bfd block

Function

The ospf bfd block command prevents an interface from dynamically setting up a BFD session.

The undo ospf bfd block command cancels the configuration.

By default, the device does not prevent an interface from dynamically setting up a BFD session.

Product	Support
S5720-EI, S5720-HI, S5720I-SI, S5720S-SI, S5720-SI, S5735-S, S5735S-S, S5735-S-I, S5730-HI, S5730S-EI, S5730-SI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6720S-SI, S6720-SI, S6730-H, S6730S-H, S6730-S, and S6730S-S	Supported
S2720-EI, S5720-LI, S5735-L, S5735S-L, S5735S-L-M, S5720S-LI, S6720-LI, and S6720S-LI	Not supported

Format

ospf bfd block

undo ospf bfd block

Parameters

None

Views

Interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

After the bfd all-interfaces enable command is used for an OSPF process, BFD sessions are created on all OSPF interfaces whose neighbor status is Full. If you do not want some interfaces to have BFD sessions created, run the ospf bfd block command to prevent these interfaces from dynamically setting up BFD sessions.

Prerequisites

BFD has been enabled on interfaces.

Precautions

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

Example

# Prevent VLANIF100 from dynamically setting up a BFD session.

<HUAWEI> system-view
[HUAWEI] interface vlanif 100

[HUAWEI-Vlanif100] ospf bfd block

# Prevent GE0/0/1 from dynamically setting up a BFD session.

<HUAWEI> system-view
[HUAWEI] interface gigabitethernet 0/0/1
[HUAWEI-GigabitEthernet0/0/1] undo portswitch
[HUAWEI-GigabitEthernet0/0/1] ospf bfd block