bfd bind mpls-te interface

Function

The bfd bind mpls-te interface command configures a static BFD session with automatically negotiated discriminators to detect a TE tunnel or the primary or backup LSP bound to a TE tunnel.

By default, BFD is disabled for tunnels.

Format

bfd sessname-value bind mpls-te interface { tunnel-type tunnel-num | tunnel-name }

bfd sessname-value bind mpls-te interface { tunnel-type tunnel-num | tunnel-name } reverse-te lsr-id lsr-id tunnel-id tunnel-id auto

Parameters

Parameter	Description	Value
sessname-value	Specifies the name of a BFD session.	The value is a string of 1 to 64 case-insensitive characters, spaces not supported.
interface tunnel-type tunnel-num	Specifies the name of a tunnel interface to be bound to a BFD session.	The interface-type value can only be tunnel.
tunnel-name	Specifies the tunnel name.	The value is a string of 1 to 63 case-sensitive characters, spaces not supported.
reverse-te	Configures reverse TE tunnel information.	-
lsr-id lsr-id	Specifies a reverse MPLS LSR ID.	The value is in dotted decimal notation.
tunnel-id tunnel-id	Specifies a reverse tunnel ID.	The value is an integer ranging from 1 to 4294967295.
auto	Enables the auto-negotiation function for discriminators.	-

Views

System view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
bfd	write

Usage Guidelines

Usage Scenario

The bfd bind mpls-te interface command configures a static BFD session with automatically negotiated discriminators to detect a TE tunnel or the primary or backup LSP bound to a TE tunnel.

Prerequisites

BFD has been enabled using the bfd command.
The tunnel interface to which the specified BFD session is to be bound has been configured.

Precautions

If the primary or backup LSP bound to a tunnel and detected by BFD is Down, a BFD session can be established but cannot go Up.

If the TE tunnel detected by BFD is Down, a BFD session can be established but cannot go Up.

Example

# Create a BFD session to detect tunnel.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] mpls te
[*HUAWEI-mpls] quit
[*HUAWEI] interface Tunnel 10
[*HUAWEI-Tunnel10] ip address 2.2.2.2 24
[*HUAWEI-Tunnel10] tunnel-protocol mpls te
[*HUAWEI-Tunnel10] mpls te tunnel-id 2
[*HUAWEI-Tunnel10] quit
[*HUAWEI] bfd
[*HUAWEI-bfd] quit
[*HUAWEI] bfd lsptope2 bind mpls-te interface Tunnel10

# Create a BFD session to detect the primary LSP bound to a tunnel and specify reverse tunnel information.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] mpls te
[*HUAWEI-mpls] quit
[*HUAWEI] interface Tunnel 10
[*HUAWEI-Tunnel10] ip address 2.2.2.2 24
[*HUAWEI-Tunnel10] tunnel-protocol mpls te
[*HUAWEI-Tunnel10] mpls te tunnel-id 2
[*HUAWEI-Tunnel10] quit
[*HUAWEI] bfd
[*HUAWEI-bfd] quit
[*HUAWEI] bfd lsptope2 bind mpls-te interface Tunnel10 reverse-te lsr-id 1.1.1.1 tunnel-id 1 auto