mpls ping interval

Function

The mpls ping interval command sets the interval at which LSP ping packets are sent in a dynamic BFD session.

The undo mpls ping interval command restores the default setting.

By default, the interval at which LSP ping packets are sent in a dynamic BFD session is 60 seconds.

Format

mpls ping interval interval

undo mpls ping interval

Parameters

Parameter	Description	Value
interval	Specifies the interval for sending LSP ping packets.	The value is an integer ranging from 30 to 600, in seconds. The default value is 60.

Views

BFD view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

On an LSP, when the active role (the ingress node) creates a dynamic BFD session, an LSP ping request packet carrying a BFD TLV is sent. After receiving the LSP ping request packet, the passive role (the egress node) replies with an LSP ping response packet carrying the BFD TLV. Then, a BFD session is established. To set the interval for sending the LSP ping packet by dynamic BFD, run the mpls ping interval command.

Prerequisites

BFD has been enabled globally using the bfd command in the system view.

Precautions

A small interval for sending LSP ping packets imposes a heady burden on links.

Set the interval for sending the L SP ping packet according to the actual networking because the egress node can establish a BFD session only after receiving an LSP ping packet.

Example

# Set the interval to 80 seconds for sending LSP ping packets in a dynamic BFD session.

<HUAWEI> system-view
[HUAWEI] bfd
[HUAWEI-bfd] mpls ping interval 80