bfd bind pw

Function

The bfd bind pw command configures a BFD session to detect a PW.

The undo bfd command deletes a specified BFD session.

By default, no BFD session is configured to detect a PW.

Format

bfd cfg-name bind pw interface interface-type interface-number [ secondary ]

undo bfd cfg-name

Parameters

Parameter	Description	Value
cfg-name	Specifies the name of the BFD session.	The value is a string of 1 to 15 case-insensitive characters, spaces not supported. When double quotation marks are used around the string, spaces are allowed in the string.
interface interface-type interface-number	Specifies the type and number of the interface where the PW to be detected resides, namely, the AC interface. interface-type specifies the interface type. interface-number specifies the interface number.	-
secondary	Indicates that the BFD session detects the secondary PW.	-

Views

System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

If a transmission device exists on a direct link, BFD detects a link fault faster than a link detection mechanism on an interface. On networks demanding fast fault detection, run the bfd bind pw command to configure a BFD session to detect a PW.

Prerequisites

A PW has been configured on an AC interface by running the mpls l2vc command.
BFD has been enabled globally by running the bfd command.
A single-segment or multi-segment PW has been configured.

Precautions

When detecting a PW, BFD sessions must be bound to the source and destination ends of a PW.
You need to create a BFD session to detect primary and secondary PWs separately.

When running the bfd bind pw command to detect a multi-segment PW, ensure that the first-segment PW is a VLL PW configured on a non-SPE node.

When running the bfd bind pw command to detect a single-segment PW, ensure that the single-segment PW is configured on a non-SPE node.

Example

# Create a BFD session to detect a PW.

<HUAWEI> system-view
[HUAWEI] bfd pe2 bind pw interface vlanif 10