bfd all-interfaces (RIP view)

Function

The bfd all-interfaces command configures parameters for a BFD session.

The undo bfd all-interfaces command restores the default BFD session parameters.

By default, the default BFD session parameters are used.

Format

bfd all-interfaces { min-tx-interval min-transmit-value | min-rx-interval min-receive-value | detect-multiplier detect-multiplier-value } ^*

undo bfd all-interfaces { min-tx-interval [ min-transmit-value ] | min-rx-interval [ min-receive-value ] | detect-multiplier [ detect-multiplier-value ] } ^*

Parameters

Parameter	Description	Value
min-tx-interval min-transmit-value	Specifies the minimum interval at which BFD packets are sent to the remote device.	The value is an integer ranging from 3 to 20000, in milliseconds. The default value is 10.
min-rx-interval min-receive-value	Specifies the minimum interval at which BFD packets are received from the remote device.	The value is an integer ranging from 3 to 20000, in milliseconds. The default value is 10.
detect-multiplier detect-multiplier-value	Specifies the local detection multiplier.	The value is an integer ranging from 3 to 50. The default value is 3.

Parameter

Description

Value

min-tx-interval min-transmit-value

Specifies the minimum interval at which BFD packets are sent to the remote device.

The value is an integer ranging from 3 to 20000, in milliseconds. The default value is 10.

min-rx-interval min-receive-value

Specifies the minimum interval at which BFD packets are received from the remote device.

The value is an integer ranging from 3 to 20000, in milliseconds. The default value is 10.

detect-multiplier detect-multiplier-value

Specifies the local detection multiplier.

The value is an integer ranging from 3 to 50. The default value is 3.

Views

RIP view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
rip	write

Usage Guidelines

Usage Scenario

After BFD for RIP is enabled, the default BFD parameters take effect. The minimum interval at which BFD packets are received and sent are 100 ms, and the detection multiplier is 3.

If the default parameters cannot meet network requirements, run the

bfd all-interfaces command to modify the parameters to change the route convergence speed. If the local end does not receive any BFD packet from its neighbor within the detection period, the local end considers this neighbor Down. The relationships between the parameters and actual intervals or the detection period are as follows:

Actual interval at which BFD packets are sent on the local end = Max { local min-tx-interval, remote min-rx-interval}
Actual interval at which BFD packets are received on the local end = Max { remote min-tx-interval, local min-rx-interval}
Actual detection period = Actual interval at which BFD packets are received on the local end x Remote

Prerequisites

Before running this command, ensure the following operations have been performed:

Global BFD has been enabled using the bfd command.
A RIP process has been created and the RIP view has been displayed using the rip command.
BFD has been enabled on interfaces using the bfd all-interfaces enable command.

Precautions

Parameters set using the rip bfd command in the interface view takes precedence over those set using the bfd all-interfaces command.

Example

# Configure BFD for a RIP process and specify the minimum interval at which BFD packets are sent to 100 ms.

<HUAWEI> system-view
[~HUAWEI] bfd
[*HUAWEI-bfd] quit
[*HUAWEI] rip
[*HUAWEI-rip-1] bfd all-interfaces enable
[*HUAWEI-rip-1] bfd all-interfaces min-tx-interval 100