tos-exp

Function

The tos-exp command sets a priority of BFD control packets for a single static BFD session.

The undo tos-exp command restores the default setting.

By default, the priority is 7, which is the highest priority of BFD control packets.

Format

tos-exp tos-value

undo tos-exp

Parameters

Parameter	Description	Value
tos-value	Specifies a priority for BFD control packets.	The value is an integer ranging from 0 to 7.

Parameter

Description

Value

tos-value

Specifies a priority for BFD control packets.

The value is an integer ranging from 0 to 7.

Views

BFD session view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bfd	write

Usage Guidelines

Usage Scenario

When the system is congested, BFD control packets with a higher priority are preferentially sent. To change a priority of BFD control packets for a single static BFD session, run the tos-exp command.

Prerequisites

A BFD session has been created.

Configuration Impact

The priority of BFD packets changes.

Precautions

If the tos-exp command is run in the BFD session view to set a priority and the tos-exp command is run in the BFD view to set a priority, the configuration of the tos-exp command in the BFD session view takes effect.
If the tos-exp command is run in the BFD session view to set a priority to 7 (the default value) and the tos-exp command is run in the BFD view to set a priority to a non-default value, the configuration of the tos-exp command in the BFD session view takes effect.

Example

# Set the priority of BFD control packets for a session named s1 to 5.

<HUAWEI> system-view
[~HUAWEI] bfd
[*HUAWEI-bfd] quit
[*HUAWEI] bfd s1 bind peer-ip 10.10.20.2
[*HUAWEI-bfd-session-s1] tos-exp 5